Nội dung toàn văn Circular 04/2016/TT-BTNMT introduction of national technical regulation on environment
THE MINISTRY OF NATURAL RESOURCES AND ENVIRONMENT | THE SOCIALIST REPUBLIC OF VIETNAM |
Hanoi, April 29, 2016 |
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.
Article 1. This Circular is issued together with QCVN 62 - MT: 2016/BTNMT - national technical regulation on effluent of livestock.
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 |
QCVN 62-MT: 2016/BTNMT
NATIONAL TECHNICAL REGULATION ON THE EFFLUENT OF LIVESTOCK
Preface
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.
1.3. Interpretation
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:
- Cmax :limitation of the composition concentration in livestock effluent discharged into receiving waters ;
- 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 | Unit | Concentration | |
Class A | Class B | |||
1 | pH | - | 6-9 | 5.5-9 |
2 | BOD5 | mg/l | 40 | 100 |
3 | COD | mg/l | 100 | 300 |
4 | Total suspended solid(TSS) | mg/l | 50 | 150 |
5 | Total Nitrogen (N) | mg/l | 50 | 150 |
6 | Total Coliform | 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
Q Unit: (m3/s) | Kq |
Q ≤ 50 | 0.9 |
50 < Q ≤ 200 | 1 |
200 < Q ≤ 500 | 1.1 |
Q > 500 | 1.2 |
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 | 0.8 |
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:
Table 4. Discharge rate coefficient Kf
Discharge rate (F) Unit: (m3/day) | Kf |
5 ≤ F ≤ 50 | 1.3 |
50 < F ≤ 100 | 1.2 |
100 < F ≤ 200 | 1.1 |
200 < F ≤ 300 | 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
3.1. Methods of sampling and determination of livestock effluent quality
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 | pH | - 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 | - TCVN 6491:1999 (ISO 6060: 1989) – Water quality – Determination of COD - 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 |
7 | 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
4.1. State regulatory authorities specialized environmental protection shall be responsible for providing directives, supervision and inspection of the implementation of this Regulation.
4.2. In case of amendments or adjustments to analysis methods referred to this Regulation, the new one shall prevail.
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