null  null
MEPC 64/23/Add.1
Annex 22, page 1
ANNEX 22
RESOLUTION MEPC.227(64)
Adopted on 5 October 2012
2012 GUIDELINES ON IMPLEMENTATION OF EFFLUENT STANDARDS
AND PERFORMANCE TESTS FOR SEWAGE TREATMENT PLANTS
THE MARINE ENVIRONMENT PROTECTION COMMITTEE,
RECALLING Article 38(a) of the Convention on the International Maritime Organization
concerning the functions of the Marine Environment Protection Committee (the Committee)
conferred upon it by international conventions for the prevention and control of marine
pollution,
NOTING resolution MEPC.159(55) by which the Committee adopted, at its fifty-fifth session,
the Revised Guidelines on implementation of effluent standards and performance tests for
sewage treatment plants (the Revised Guidelines) and invited Governments to apply the
Revised Guidelines when approving sewage treatment plants and provide the Organization
with information on experience gained with their application, in particular, on successful
testing of equipment against the standards contained in the Revised Guidelines,
NOTING ALSO resolution MEPC.200(62) by which the Committee adopted, at its
sixty-second session, amendments to MARPOL Annex IV concerning Special Area
provisions and the designation of the Baltic Sea as a special area, which are expected to
enter into force on 1 January 2013,
NOTING FURTHER the provisions of regulations 9.1.1 and 9.2.1 of MARPOL Annex IV, in
which reference is made to the above-mentioned Revised Guidelines,
RECOGNIZING that the Revised Guidelines should be amended in order that current trends
for the protection of the marine environment, the need to address particular oceanographical
and ecological conditions of the special area designated, and developments in the design
and effectiveness of commercially available sewage treatment plants be reflected; and the
proliferation of differing unilateral more stringent standards that might be imposed worldwide
be avoided,
HAVING CONSIDERED the recommendation made by the Sub-Committee on Ship Design
and Equipment, at its fifty-sixth session,
1.
ADOPTS the 2012 Guidelines on implementation of effluent standards and
performance tests for sewage treatment plants, the text of which is set out in the annex to
this resolution;
2.
INVITES governments to:
.1
implement the 2012 Guidelines and apply them on or after 1 January 2016;
and
.2
provide the Organization with information on experience gained with the
application of the 2012 Guidelines;
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3.
ALSO INVITES Governments to issue an appropriate "Certificate of type
approval for sewage treatment plants" as referred to in paragraph 5.4.2 and the annex of
the 2012 Guidelines and to recognize certificates issued under the authority of other
Governments as having the same validity as certificates issued by them;
4.
SUPERSEDES the Revised Guidelines on implementation of effluent standards and
performance tests for sewage treatment plants, adopted by resolution MEPC.159(55).
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ANNEX
2012 GUIDELINES ON IMPLEMENTATION OF EFFLUENT STANDARDS
AND PERFORMANCE TESTS FOR SEWAGE TREATMENT PLANTS
TABLE OF CONTENTS
1
Introduction
2
Definitions
3
General
4
Technical specification
5
Testing considerations
6
Renewal and additional surveys
7
Familiarization of ship personnel in the use of the sewage treatment plant
8
Maintenance
ANNEX
Form of Certificate of Type Approval for Sewage Treatment Plants and appendix
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2012 GUIDELINES ON IMPLEMENTATION OF EFFLUENT STANDARDS
AND PERFORMANCE TESTS FOR SEWAGE TREATMENT PLANTS
1
INTRODUCTION
1.1
Background
1.1.1
The
Marine
Environment
Protection
Committee
(MEPC)
adopted
resolution MEPC.2(VI), Recommendation on International Effluent Standards and Guidelines
for Performance Tests for Sewage Treatment Plants in 1976. MEPC 55 in October 2006
adopted, by resolution MEPC.159(55), the Revised Guidelines on implementation of effluent
standards and performance tests for sewage treatment plants, which superseded
resolution MEPC.2(VI).
1.1.2
MEPC 62 adopted resolution MEPC.200(62) amending MARPOL by designating
the Baltic Sea as a special area under Annex IV and prohibiting the discharge of sewage
effluent from passenger ships operating in special areas, unless a passenger ship has in
operation an approved sewage treatment plant implementing effluent standards and
performance tests defined in the 2012 Guidelines on implementation of effluent standards
and performance tests for sewage treatment plants (the Guidelines).
1.2
Application
1.2.1
These Guidelines amend the Revised guidelines on implementation of effluent
standards and performance tests for sewage treatment plants, adopted by
resolution MEPC.159(55), by including the standards of section 4.2 that only apply to
passenger ships which operate in MARPOL Annex IV special areas and which intend to
discharge treated sewage effluent into the sea.
1.2.2
The requirements of these Guidelines, with the exception of the requirements in
section 4.2, will apply to sewage treatment plants installed on or after 1 January 2016 on:
.1
ships, other than passenger ships, in all areas; and
.2
passenger ships outside MARPOL Annex IV special areas.
1.2.3
The requirements of these Guidelines, including those in section 4.2, will apply to
sewage treatment plants installed on:
.1
new passenger ships when operating in a MARPOL Annex IV special area
and intending to discharge treated sewage effluent into the sea on or
after 1 January 2016; and
.2
existing passenger ships when operating in a MARPOL Annex IV special
area and intending to discharge treated sewage effluent into the sea on or
after 1 January 2018.
1.2.4
Sewage treatment plants installed prior to 1 January 2016 and on or
after 1 January 2010, on ships other than passenger ships operating in MARPOL Annex IV
special areas and intending to discharge treated sewage effluent into the sea, should comply
with resolution MEPC.159(55).
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1.2.5
Sewage treatment plants installed prior to 1 January 2010 on ships other than
passenger ships operating in MARPOL Annex IV special areas and intending to discharge
treated sewage effluent into the sea, should comply with resolution MEPC.2(VI).
1.3
Purpose
1.3.1
These Guidelines and specifications address the design, installation, performance
and testing of sewage treatment plants required by regulations 9.1.1 and 9.2.1 of
MARPOL Annex IV.
1.3.2
2
The purpose of these Guidelines and specifications is:
.1
to provide a uniform interpretation of the requirements of regulations 9.1.1
and 9.2.1 of MARPOL Annex IV;
.2
to assist Administrations in determining appropriate design, construction
and operational testing and performance parameters for sewage treatment
plants when such equipment is fitted in ships flying the flag of their State;
and
.3
to provide guidance for installation requirements.
DEFINITIONS
2.1
Annex IV – the revised Annex IV of the International Convention for the Prevention
of Pollution from Ships, 1973, as modified by the 1978 and 1997 Protocols (MARPOL), as
amended by resolutions MEPC.115(51) and MEPC.200(62).
2.2
Convention – the International Convention for the Prevention of Pollution from
Ships, 1973, as modified by the 1978 and 1997 Protocols (MARPOL).
2.3
Dilution (Qd) – is dilution water, grey water, process water, and/or seawater
introduced to the sewage treatment plant after the influent sample point and after the influent
flow measurement device, see figure 1.
2.4
Effluent (Qe) – treated wastewater produced by the sewage treatment plant, see
figure 1.
2.5
Flush water – transport medium used to carry sewage or other wastes from toilets
or urinals to the treatment system.
2.6
Geometric mean – the nth root of the product of n numbers.
2.7
Grey water – is drainage from dishwater, galley sink, shower, laundry, bath and
washbasin drains and does not include drainage from toilets, urinals, hospitals, and animal
spaces, as defined in regulation 1.3 of MARPOL Annex IV and does not include drainage
from cargo spaces.
2.8
Hydraulic loading – system design flow rate of waste water (Qi) into the sewage
treatment plant.
2.9
Influent (Qi) – Liquid containing sewage, grey water or other liquid streams, to be
processed by the treatment plant, see figure 1.
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2.10
Sample point – A point for manual collection of a representative sample of influent
and effluent without opening tanks, voids or vents, see figure 1.
2.11
Testing on board – testing, for the purpose of type approval, carried out on a
sewage treatment plant installed on a ship.
2.12
Testing ashore – testing ashore, for the purpose of type approval, carried out on a
sewage treatment plant.
2.13
Thermotolerant coliforms – the group of coliform bacteria which produce gas from
lactose in 48 hours at 44.5°C. These organisms are sometimes referred to as "faecal
coliforms"; however, the term "thermotolerant coliforms" is now accepted as more
appropriate, since not all of these organisms are of faecal origin.
Return liquor
Influent, Qi
Mixing
Tank
Influent
Flow Meter
Qi
Biosolids
treatment
Sewage
Treatment
Plant
Effluent
Flow Meter
Qe
Influent
Sample
Point (Ci)
Dilution Qd
3
Effluent
Sample
System diagram of a sewage treatment
plant
Point
(Ce)
Effluent, Qe
Figure 1:
GENERAL
3.1
An approved sewage treatment plant should meet the technical specifications in
section 4 and the tests outlined in these Guidelines. However, section 4.2 on nitrogen and
phosphorous removal applies to passenger ships operating within a special area intending to
discharge treated sewage effluent into the sea. It should also be noted that, when ships are
operating approved sewage treatment plants, MARPOL Annex IV also provides that the
effluent shall not produce visible floating solids or cause discolouration of the surrounding
water.
3.2
In meeting the effluent standards in section 4, an approved sewage treatment plant
should not rely solely on dilution of wastewater. Where amounts of dilution are deemed
essential to a treatment process, the effluent standards in section 4 having concentration
limits (mg/l) should be adjusted proportionally using dilution compensation factor Qi/Qe
to take account of dilution Qd. In addition, for effluent standards in section 4 having a
percentage reduction, the geometric mean of the daily percentage reduction values should
be calculated using the accumulated flow Qi and Qe over each 24-hour test day, in terms
of l/day, multiplied by the geometric mean of the corresponding concentration Ci and Ce for
the same 24-hour test day, in terms of mg/l.
The overall percentage reduction over the entire test period n is:
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PR =
n
PR 1 ⋅ PR 2 ⋅ ⋅ ⋅ PR n ⋅ 100
,
where PRn is the daily removal value:
where:
n represents the test day number; and
s represents the sample number collected on test day n
3.3
It is acknowledged that the performance of sewage treatment plants may vary
considerably when the system is tested ashore under simulated shipboard conditions or
on board a ship under actual operating conditions. Where testing ashore demonstrates that
a system complies with the standards, but subsequent onboard testing does not meet the
standards, the Administration should determine the reason and take it into account when
deciding whether to type approve the plant.
3.4
It is recognized that Administrations may wish to modify the specific details outlined
in these Guidelines to take account of very large, very small or unique sewage treatment
plants.
4
TECHNICAL SPECIFICATION
4.1
For the purpose of regulations 9.1.1 and 9.2.1 of MARPOL Annex IV, a sewage
treatment plant should meet the following effluent standards when tested for its Certificate of
Type Approval by the Administration:
.1
Thermotolerant Coliform Standard
The geometric mean of the thermotolerant coliform count of the samples of
effluent taken during the test period should not exceed 100 thermotolerant
coliforms/100 ml as determined by membrane filter, multiple tube
fermentation or an equivalent analytical procedure.
.2
Total Suspended Solids (TSS) Standard
.1
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The geometric mean of the total suspended solids content of the
samples of effluent taken during the test period should not
exceed 35 Qi/Qe mg/l.
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Annex 22, page 8
.2
Where the sewage treatment plant is tested on board ship, the
maximum total suspended solids content of the samples of
effluent taken during the test period may be adjusted to take
account of the total suspended solid content of the flushing water.
In allowing this adjustment in maximum TSS, Administrations
should ensure sufficient tests of TSS are taken of the flushing
water throughout the testing period to establish an accurate
geometric mean to be used as the adjustment figure (defined as
x). In no cases should the maximum allowed TSS be greater than
(35 plus x) Qi/Qe mg/l.
Method of testing should be by:
.3
.1
filtration of representative sample through a 0.45 µm filter
membrane, drying at 105°C and weighing; or
.2
centrifuging of a representative sample (for at least five
minutes with mean acceleration of 2,800-3,200 g), drying
at least 105°C and weighing; or
.3
other internationally accepted equivalent test standard.
Biochemical oxygen demand without nitrification and chemical oxygen
demand
Administrations should ensure the sewage treatment plant is designed to
reduce both soluble and insoluble organic substances to meet the
requirement that, the geometric mean of 5-day biochemical oxygen
demand without nitrification (BOD5 without nitrification) of the samples of
effluent taken during the test period does not exceed 25 Qi/Qe mg/l and
the chemical oxygen demand (COD) does not exceed 125 Qi/Qe mg/l.
The test method standard should be ISO 5815 1:2003 for BOD5 without
nitrification and ISO 15705:2002 for COD, or other internationally accepted
equivalent test standards.
.4
pH
The pH of the samples of effluent taken during the test period should be
between 6 and 8.5.
.5
Zero or non-detected values
For thermotolerant coliforms zero values should be replaced with a value
of 1 thermotolerant coliform/100 ml to allow the calculation of the geometric
mean. For total suspended solids, biochemical oxygen demand without
nitrification and chemical oxygen demand values below the limit of
detection should be replaced with one half the limit of detection to allow the
calculation of the geometric mean.
4.2
For the purpose of regulation 9.2.1 of MARPOL Annex IV, a sewage treatment plant
installed on a passenger ship intending to discharge sewage effluent in special areas should
additionally meet the following effluent standards when tested for its Certificate of Type
Approval by the Administration:
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.1
Nitrogen and phosphorus removal standard
The geometric mean of the total nitrogen and phosphorus content of the
samples of effluent taken during the test period should not exceed:
.2
.1
total nitrogen1: 20 Qi/Qe mg/l or at least 70 per cent reduction2;
.2
total phosphorus: 1.0 Qi/Qe mg/l or at least 80 per cent reduction3.
Method of testing should be:
.1
ISO 29441:2010 for total nitrogen; and
.2
ISO 6878:2004 for total phosphorus; or
.3
other internationally accepted equivalent test standard.
4.3
Where the sewage treatment plant has been tested ashore, the initial survey should
include installation and commissioning of the sewage treatment plant.
4.4
A review of the Nitrogen and Phosphorus removal standard set forth in paragraph
4.2.1 of the Guidelines should be undertaken by the Committee at its sixty-seventh session
(second part of year 2014) to determine that the required removal standards for Nitrogen
and Phosphorus are met by type approved sewage treatment plants, or such systems in
development, taking into account the results of on board and ashore testing in accordance
with section 5 of the 2012 Guidelines. In order to accomplish this, the Committee decided to
establish a review group at MEPC 67.
4.5
The Committee, based on the information provided by the review group, should
decide whether it is possible for ships to comply with the standard in paragraph 4.2.1with the
dates set out in paragraph 1.2.3. If a decision is taken that it is not possible or practicable for
ships to comply, then the Guidelines should be amended accordingly.
5
TESTING CONSIDERATIONS
5.1
Testing of the operational performance of a sewage treatment plant should be
conducted in accordance with the following subparagraphs. Unless otherwise noted, the
subparagraphs apply to testing both on board and ashore.
5.2
Raw sewage quality
5.2.1
Sewage treatment plants tested ashore – the influent should be fresh sewage
consisting of faecal matter, urine, toilet paper and flush water to which, for testing purposes
primary sewage sludge has been added as necessary to attain a minimum total suspended
solids concentration appropriate for the number of persons and hydraulic loading for which
the sewage treatment plant will be certified. The testing should take into account the type of
system (for example, vacuum or gravity toilets) and any water or grey water that may be
1
2
3
Total nitrogen means the sum of total Kjeldahl nitrogen (organic and ammoniacal nitrogen) nitrate-nitrogen
and nitrite-nitrogen.
Reduction in relation to the load of the influent.
Reduction in relation to the load of the influent.
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added for flushing to the sewage before treatment. In any case the influent concentration of
total suspended solids should be no less than 500 mg/l.
5.2.2
Sewage treatment plants tested on board – the influent may consist of the sewage
generated under normal operational conditions.
In any case the average influent
concentration of total suspended solids should be not less than 500 mg/l.
5.2.3
Influent should be assessed without the contribution of any return liquors,
wash water, or recirculates, etc., generated from the sewage treatment plant.
5.3
Duration and timing of test
The duration of the test period should be a minimum of 10 days and should be timed to
capture normal operational conditions, taking into account the type of system and the
number of persons and hydraulic loading for which the sewage treatment plant will be type
approved. Noting that the systems need a period of stabilization, the test should commence
after steady-state conditions have been reached by the sewage treatment plant under test.
5.4
Loading factors
5.4.1
During the test period, the sewage treatment plant should be tested under
conditions of minimum, average and maximum volumetric loadings:
.1
for testing ashore, these loadings should be as laid down in the
manufacturer's specifications. Figure 2 shows suggested timings for
sampling each loading factor; and
.2
for testing on board, minimum loading should represent that generated by
the number of persons on the ship when it is alongside in port, and
average and maximum loadings should represent those generated by the
number of persons on the ship at sea and should take account of meal
times and watch rotations.
5.4.2
The Administration should undertake to assess the capability of the sewage
treatment plant to produce an effluent in accordance with the standards prescribed by
section 4 following minimum, average and maximum volumetric loadings. The range of
conditions under which the effluent standards were met should be recorded on the
Certificate of Type Approval. The form of the Certificate of Type Approval and appendix is
set out in the annex to these Guidelines.
5.5
Sampling methods and frequency
5.5.1
Administrations should ensure that the sewage treatment plant is installed in
a manner which facilitates the collection of samples, see figure 1. Sampling should be
carried out in a manner and at a frequency which is representative of the effluent quality.
Figure 2 provides a suggested frequency for sampling, however, the frequency should
take account of the residence time of the influent in the sewage treatment plant. A minimum
of 40 effluent samples should be collected to allow a statistical analysis of the testing data
(e.g. geometric mean, maximum, minimum and variance).
5.5.2
Influent sample point should be upstream of any return liquors, wash water, or
recirculates generated from the sewage treatment plant. Where such a sample point is not
readily available on ships, the flows and concentrations of these return liquors, wash water, or
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recirculates generated from the sewage treatment plant should be measured, so that the load
can be taken away from the load of influent.
5.5.3
An influent sample should be taken and analysed for every effluent sample taken
and the results recorded to ensure compliance with section 4. If possible, additional influent
and effluent samples should be taken to allow for a margin of error. Samples should be
appropriately preserved prior to analysis particularly if there is to be a significant delay
between collection and analysis or during times of high ambient temperature.
5.5.4
Any disinfectant residual in samples should be neutralized when the sample is
collected to prevent unrealistic bacteria kill or chemical oxidation of organic matter by the
disinfectant brought about by artificially extended contact times. Chlorine (if used)
concentration and pH should be measured prior to neutralization.
Figure 2: Suggested hydraulic loading factors and sampling frequency for testing
sewage treatment plants. May be modified as necessary to take account of
characteristics of individual sewage treatment plants
5.6
Analytical testing of effluent
The Administration should give consideration to the recording of other parameters in addition
to those required (thermotolerant coliforms, total suspended solids, BOD5 without
nitrification, COD, pH and residual chlorine) with a view to future technological development.
These parameters include total solids, volatile solids, settleable solids, volatile suspended
solids, turbidity, total organic carbon, total coliforms and faecal streptococci.
5.7
Disinfectant residual
The potential adverse environmental effects of many disinfectant residuals and by-products,
such as those associated with the use of chlorine or its compounds, are well recognized.
It is, therefore, recommended that Administrations encourage the use of ozone, ultraviolet
irradiation or any other disinfectants which minimize adverse environmental effects, whilst
pursuing the thermotolerant coliform standard. When chlorine is used as a disinfectant, the
Administration should be satisfied that the best technical practice is used to keep the
disinfectant residual in the effluent below 0.5 mg/l.
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5.8
Scaling considerations
Only full-scale marine sewage treatment plants should be accepted for testing purposes.
The Administration may certify a range of the manufacturer's equipment sizes employing the
same principles and technology, but due consideration should be given to limitations on
performance which might arise from scaling up or scaling down. In the case of very large,
very small or unique sewage treatment plants, certification may be based on results of
prototype tests. Where possible, confirmatory tests should be performed on the final
installation of such sewage treatment plants.
5.9
Environmental testing of the sewage treatment plant
5.9.1
The Administration should ensure that the sewage treatment plant can operate
under conditions of tilt consistent with internationally acceptable shipboard practice up
to 22.5º in any plane from the normal operating position.
5.9.2
Tests for certification should be carried out over the range of salinity and the range
of temperatures for ambient air and flush water specified by the manufacturer, and the
Administration should be satisfied that such specifications are adequate for the conditions
under which the equipment must operate.
5.9.3
Control and sensor components should be subjected to environmental testing to
verify their suitability for marine use. The Test Specifications section in part 3 of the annex
to the Revised Guidelines and Specifications for Pollution Prevention Equipment for
Machinery Space Bilges of Ships (resolution MEPC.107(49)) provides guidance in this
respect.
5.9.4
Any limitation on the conditions of operation should be recorded on the certificate.
5.9.5
The Administration should also consider requiring the manufacturer to include in the
operating and maintenance manuals, a list of chemicals and materials suitable for use in the
operation of the sewage treatment plant.
5.10
Other considerations
5.10.1 The type and model of the sewage treatment plant and the name of the
manufacturer should be noted by means of a durable label firmly affixed directly to the
sewage treatment plant. This label should include the date of manufacture and any
operational or installation limits considered necessary by the manufacturer or the
Administration.
5.10.2 Administrations should examine the manufacturer's installation, operating and
maintenance manuals for adequacy and completeness. The ship should have on board at
all times a manual detailing the operational and maintenance procedures for the sewage
treatment plant, including safety information about the chemicals and materials actually used
in the operation of the sewage treatment plant.
5.10.3 Qualifications of testing facilities should be carefully examined by the Administration
as a prerequisite to their participation in the testing programme. Every attempt should be
made to assure uniformity among the various facilities.
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6
RENEWAL AND ADDITIONAL SURVEYS
Administrations should endeavour to ensure, when conducting renewal or additional surveys
in accordance with regulations 4.1.2 and 4.1.3 of MARPOL Annex IV, that the sewage
treatment plant continues to perform in accordance with the conditions outlined in
regulation 4.1.1 of MARPOL Annex IV.
7
FAMILIARIZATION OF SHIP PERSONNEL IN THE USE OF THE SEWAGE
TREATMENT PLANT
Recognizing that the appropriate regulations relating to familiarization are contained within
the Ships Safety Management Systems under the International Safety Management Code,
Administrations are reminded that ship staff training should include familiarization in the
operation and maintenance of the sewage treatment plant.
8
MAINTENANCE
Routine maintenance of the system should be clearly defined by the manufacturer in the
associated operating and maintenance manuals. All routine and repair maintenance should
be recorded.
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ANNEX
FORM OF CERTIFICATE OF TYPE APPROVAL
FOR SEWAGE TREATMENT PLANTS AND APPENDIX
BADGE
OR
CIPHER
NAME OF ADMINISTRATION
CERTIFICATE OF TYPE APPROVAL
FOR SEWAGE TREATMENT PLANTS
This is to certify that the sewage treatment plant, type ............................................................. ,
having a designed hydraulic loading of ............ cubic metres per day, (m3/day), an organic
loading of ............ kg per day biochemical oxygen demand without nitrification (BOD5 without
nitrification) and of the design shown on drawings Nos. ...........................................................
manufactured by .......................................................................................................................
has been examined and satisfactorily tested in accordance with the International Maritime
Organization resolution MEPC.227(64) to meet the operational requirements referred to in
regulations 9.1.1 and 9.2.1 of MARPOL Annex IV of the International Convention for the
Prevention of Pollution from Ships, 1973, as modified by the 1978 and 1997 Protocols
(as amended by resolutions MEPC.115(51) and MEPC.200(62)).
The tests on the sewage treatment plant were carried out
ashore at∗ ..................................................................................................................................
on board at∗ ................................................................................................................................
and completed on .....................................................................................................................
The sewage treatment plant was tested and produced an effluent which, on analysis,
produces:
.1
.2
.3
.4
.5
.6
.7
a geometric mean of no more than 100 thermotolerant coliforms/100 ml;
a geometric mean of total suspended solids of 35 Qi/Qe mg/l if tested ashore or the
maximum total suspended solids not exceeding (35 plus x) Qi/Qe mg/l for the
ambient water used for flushing purposes if tested on board;
a geometric mean of 5-day biochemical oxygen demand without nitrification
(BOD5 without nitrification) of no more than 25 Qi/Qe mg/l;
a geometric mean of chemical oxygen demand (COD) of no more than
125 Qi/Qe mg/l;
pH between 6 and 8.5;
a geometric mean of total nitrogen of no more than 20 Qi/Qe mg/l or at least 70 per
cent reduction; and
a geometric mean of total phosphorus of no more than 1.0 Qi/Qe mg/l or at least
80 per cent reduction**.
The Administration confirms that the sewage treatment plant can operate at angles of
inclination of 22.5° in any plane from the normal operating position.
Details of the tests and the results obtained are shown on the appendix to this Certificate.
∗
**
Delete as appropriate.
Delete for ships other than passenger ships intending to discharge sewage effluent in Special Areas.
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A plate or durable label containing data of the manufacturer's name, type and serial
numbers, hydraulic loading and date of manufacture should be fitted on each sewage
treatment plant.
A copy of this certificate should be carried on board any ship equipped with the above
described sewage treatment plant.
Official stamp
Signed
....................................................................
Administration of …………………………………….........
Dated this ………............… day of..…….........……..… 20…….....
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APPENDIX TO
CERTIFICATE OF TYPE APPROVAL FOR SEWAGE TREATMENT PLANTS
BADGE
OR
CIPHER
Test results and details of tests conducted on samples from the sewage treatment plant in
accordance with resolution MEPC.227(64):
Sewage treatment plant, Type ..................................................................................................
Manufactured by .......................................................................................................................
Organization conducting the test ..............................................................................................
Designed hydraulic loading .................................................................... .....m3/day
Designed organic loading .................................................................. kg/day BOD
Number of effluent samples tested ........................................................................
Number of influent samples tested ........................................................................
Total suspended solids influent quality ............. ............................................... mg/l
Total nitrogen influent quality..............................................................mg/las nitrogen*
Total phosphorus influent quality....................................................mg/l as phosphorus*
BOD5 without nitrification influent quality ........................................................... mg/l
Maximum hydraulic loading ........................................................................ m3/day
Minimum hydraulic loading ......................................................................... m3/day
Average hydraulic loading (Qi) ..................................................................... m3/day
Effluent flow (Qe).......................................................................................... m³/day
Dilution compensation factor (Qi/Qe)……………………………………………………….
Geometric mean of total suspended solids .............................................mg/l
Geometric mean of the thermotolerant coliform count.............................. coliforms/100 ml
Geometric mean of BOD5 without nitrification .................................................. mg/l
Geometric mean of COD …………………………………………………….…….mg/l
Geometric mean of total nitrogen .............................................................mg/l* or %*
Geometric mean of total phosphorus........................................................mg/l* or %*
Maximum pH: ………………………………………………………….…………………
Minimum pH:…………………………………………………………..………………..
Type of disinfectant used .......................................................................................
If Chlorine - residual Chlorine:
Maximum ....................................................................................... mg/l
Minimum ........................................................................................ mg/l
Geometric Mean ............................................................................ mg/l
Was the sewage treatment plant tested with:
Fresh water flushing? .............................................................. Yes/No∗
Salt water flushing? ................................................................. Yes/No∗
Fresh and salt water flushing? ................................................ Yes/No∗
Grey water added? ......................................Yes – proportion:
/No*
Was the sewage treatment plant tested against the environmental conditions specified in
section 5.9 of resolution MEPC.227(64):
*
Delete as appropriate.
I:\MEPC\64\23-Add-1.doc
MEPC 64/23/Add.1
Annex 22, page 17
Temperature ............................................................................. Yes/No*
Humidity ................................................................................... Yes/No*
Inclination ................................................................................. Yes/No*
Vibration ................................................................................... Yes/No*
Reliability of Electrical and Electronic Equipment .................... Yes/No*
Limitations and the conditions of operation are imposed:
Salinity ..................................................................................................
Temperature .........................................................................................
Humidity ...............................................................................................
Inclination ..............................................................................................
Vibration ...............................................................................................
Results of other parameters tested ........................................................................
Official stamp
Signed
....................................................................
Administration of …………………………………….........
Dated this ……..........….....… day of..……....….....…..… 20…......….
______________________
*
Delete as appropriate.
***
I:\MEPC\64\23-Add-1.doc
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