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THE MINISTRY OF
NATURAL RESOURCES AND ENVIRONMENT
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THE SOCIALIST
REPUBLIC OF VIETNAM
Independence - Freedom - Happiness
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No:04/2016/TT-BTNMT
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Hanoi, April 29,
2016
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CIRCULAR
INTRODUCTION
OF NATIONAL TECHNICAL REGULATION ON ENVIRONMENT
Pursuant to the Law on Technical regulations and
standards dated June 29, 2006;
Pursuant to the Law on Environment Protection
dated June 23, 2014;
Pursuant to the Government's Decree No. 127/2007/ND-CP
dated August 01, 2007 detailing the implementation of a number of articles of
the Law on Technical regulations and standards;
Pursuant to the Government’s Decree No.
21/2013/ND-CP defining functions, responsibilities, entitlements and organizational
structure of the Ministry of Natural Resources and Environment dated March 04,
2013;
At request of the General Director of Vietnam
Environment Administration, Directors of the Departments of Science and
Technology and Department of Legal Affairs;
The Minister of Natural Resources and
Environment hereby issues this Circular stipulating national technical on
environment.
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Article 2. This Circular enters into force from June 15, 2016.
Article 3. General Director of Vietnam Environment Administration,
Heads of Affiliates of the Ministry of Natural Resources and Environment,
Directors of Departments of Natural Resources and Environment of
provinces and centrally-affiliated cities, and relevant entities shall be
responsible for the implementation of this Circular./.
PP.MINISTER
DEPUTY MINISTER
Vo Tuan Nhan
QCVN 62-MT: 2016/BTNMT
NATIONAL
TECHNICAL REGULATION ON THE EFFLUENT OF LIVESTOCK
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QCVN 62-MT:2016/BTNMT is compiled by the editorial
board for the national technical regulation on effluent of livestock, proposed
by Vietnam Environment Administration, Departments of Science and Technology, and
Department of Legal Affairs and issued together with the Circular
No.04/2016/TT-BTNMT dated April 29, 2016 by the Minister of Natural Resources
and Environment .
NATIONAL
TECHNICAL REGULATION ON THE EFFLUENT OF LIVESTOCK
1. GENERAL PROVISIONS
Scope
This Regulation stipulates permissible limitations
of composition concentration in livestock effluent discharged into receiving
waters.
1.2. Regulated entities
1.2.1. This Regulation applies to livestock
effluents only. Organizations and individuals discharging livestock effluents
into receiving waters shall comply with this Regulation.
1.2.2. The discharge of livestock effluents into
wastewater collection systems of centralized wastewater treatment plants shall
conform to regulations of management boards of such plants.
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For the purpose of this Regulation, terms herein
shall be construed as follows:
1.3.1. Livestock effluent refers to wastewater that
has been treated produced from livestock facilities including
farm households (hereinafter referred to as “farm facilities”).
Domestic wastewater from livestock facilities
discharged into livestock effluent treatment systems is deemed
livestock effluents.
1.3.2. Receiving waters refer
to drainage systems in residential areas, industrial clusters or cities;
rivers, streams, ditches, channels, ponds, lakes, lagoons,
watercourses and coastal waters for specific purposes.
2. TECHNICAL PROVISIONS
2.1. Technical provisions applicable to
livestock facilities with the total discharge rate
of at least 5m3 per day
2.1.1. The limitation of livestock effluent
discharged into receiving waters is determined as follows:
Cmax = C
x Kq x Kf
Where:
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- C: composition concentration
in livestock effluents prescribed in 2.1.2;
- Kq : receiving
water factor prescribed in 2.1.3 corresponding to the flow rate of
rivers, streams, channels, reaches; or the volume of pond, lakes, lagoons; or
use of coastal waters;
- Kf : discharge
rate coefficient prescribed in 2.1.4 corresponding to the total discharge.
In case of determination of pH and total coliform
concentration, Cmax = C.
For livestock effluent discharged into municipal/residential drainage systems without centralized
wastewater treatment plants, Cmax = C as prescribed in class B, Table 1.
2.1.2. Composition concentration (C) is applied to
calculate the composition limitations in livestock effluents
Table 1. C applicable
to calculation of limitation of compositions of livestock effluents
No.
Parameters
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Concentration
(C)
Class A
Class B
1
pH
-
6-9
5.5-9
2
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mg/l
40
100
3
COD
mg/l
100
300
4
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mg/l
50
150
5
Total Nitrogen (N)
mg/l
50
150
6
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MPN (Most probable
number) or CFU (colony forming units)/100ml
3,000
5,000
Column A, Table 1 presents the concentration
(C) of compositions of livestock effluent treated to achieve Class
A prior to discharge into receiving water
bodies for domestic use.
Column B, Table 1 presents the concentration (C) of
compositions of livestock effluent treated to achieve Class B prior to discharge
into receiving water bodies serving purposes other than domestic use.
The use of receiving waters shall be defined at
receiving water bodies.
3.1.2. Receiving water factor (Kq )
3.1.2.1. Kq by flow rate
(Q) of rivers, streams, channel, or watercourses is
presented in the following table:
Table 2: Kq
by flow rate of aforesaid receiving waters
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Unit: (m3/s)
Kq
Q ≤ 50
0.9
50 < Q ≤ 200
1
200 < Q ≤ 500
1.1
Q > 500
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Q is the arithmetic mean of the receiving water flow
rate in 03 driest months of 03 consecutive years ( data provided by the
national Centre for hydro-meteorological services).
3.1.2.2. Kq by volume of the receiving
waters such as ponds, lakes or lagoons is presented in the
following table:
Table 3: Kq by volume of aforesaid receiving waters
Volume of
receiving waters (V)
Unit: (m3)
Kq
V ≤ 10 x 106
0.6
10 x 106
< V ≤ 100 x 106
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V > 100 x 106
1.0
V is arithmetic mean of the receiving water volume in
03 driest months of 03 consecutive years ( data provided by the national Centre
for Hydro-Meteorological Services).
3.1.2.3. In the absence of flow rate of receiving
waters (rivers, streams, channels or watercourses), Kq = 0.9. In the
absence of volume of receiving waters (pond, lakes or lagoons), Kq =
0.6.
3.1.2.4.Kq applicable to receiving
waters as coastal water, wetlands, and coastal lagoons are as follows:
For coastal waters for aquaculture, aquatic
conservation or water sport; beaches or coastal brackish-water or
saltwater lagoons, Kq = 1.
For coastal waters for purposes other than
aquaculture, aquatic conservation or water sport activities or beaches, Kq
= 1.3.
2.1.4. Discharge rate coefficient Kf
Kf is presented in the following table:
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Discharge rate
(F)
Unit: (m3/day)
Kf
5 ≤ F ≤ 50
1.3
50 < F ≤ 100
1.2
100 < F ≤ 200
1.1
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1.0
F > 300
0.9
F is determined according the highest discharge rate
stated in the environmental impact assessment report, commitment to environment
protection, Environmental protection plans or Certificate of completion of
construction works for environmental protection approved and granted by
competent authorities.
In case of variation in F that makes the applied Kf
no longer appropriate, the livestock facility shall request a competent
authority to adjust Kf.
2.2. Technical provisions applicable to
livestock facilities with discharge rate of less than 5m3 per day
2.2.1. Livestock facilities with the total
discharge of under 2 m3/day shall be equipped with hygienic
systems including collection, sedimentation and
decomposition systems
2.2.2. Livestock with the total discharge varying
from 2m3/day to under 5 m3/day shall be equipped with
collection and treatment systems such as biogases or biological padding which
are conformable to National Standards.
3. METHODS OF DETERMINATION
OF LIVESTOCK EFFLUENT QUALITY
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No.
Parameters
Methods
1
Samples
- TCVN 6663-1:2011 (ISO
5667-1:2006) –Water quality – Part 1: Guidance on design of sampling programs
and techniques
- TCVN 6663-3:2008 (ISO 5667-3:
2003) – Water quality – Sampling – Guidance on sample preservation and
analysis
- TCVN 5999:1995 (ISO
5667-10: 1992) – Water quality – Sampling – Guidance on sample preservation
and analysis
2
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- TCVN 6492:2011 (ISO 10523:
2008) – Water quality – Determination of pH
- SMEWW 2550 B - Reference
methods of analysis of water and wastewater – Determination of pH
3
BOD5
(20°C)
- TCVN 6001-1:2008 (ISO
5815-1:2003) – Water quality – Determination of biochemical oxygen demand after
n days (BODn) – Part 1: Dilution and seeding method with
allylthiourea addition;
- TCVN 6001-2:2008 (ISO
5815-2:2003) – Water quality – Determination of biochemical oxygen demand
after n days (BODn) – Part 2: Method for undiluted samples;
- SMEWW 5210 B - Reference
methods of analysis of water and wastewater – Determination of BOD
4
COD
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- SMEWW 5220 -
Reference methods of analysis of water and wastewater – Determination of COD
5
Total suspended
solid(TSS)
- TCVN 6625:2000 (ISO
11923:1997)- Water quality – Determination of suspended solid by filtration
through glass-fibre filters;
- SMEWW 2540 - Reference
methods of analysis of water and wastewater – Determination of suspended
solid
6
Total nitrogen (N)
- TCVN 6638:2000 - Water
quality - Determination of nitrogen - Catalytic digestion after reduction
with Devarda alloy;
- SMEWW 4500-N.C - Reference
methods of analysis of water and wastewater – Determination of Nitrogen
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Total Coliform
- TCVN 6187-1:2009 - Water
quality – Detection and enumeration of Escherichia coli and coliform
bacteria.
Part 1: Membrane filtration method
- TCVN 6187-2:1996 - Water quality - Detection and enumeration of
organisms thermotolerant coliform organisms and presumptive Escherichia coli.
Part 2:
Multiple tube (most probable number) method
- TCVN 8775:2011 - Water quality - Total coliform - Membrane-filter
technique;
- SMEWW 9222 B - Reference
methods of analysis of water and wastewater – Determination of coliform
3.2. The application of other national standards
and international standards that provide the similar or more precise methods of
determination of such aforesaid parameters is acceptable.
4. IMPLEMENTATION ORGANIZATIONS
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4.2. In case of amendments or adjustments to
analysis methods referred to this Regulation, the new one shall prevail.