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Central Pollution Control Board Environmental Standard

 
Environmental Standards



32.0 GENERAL STANDARDS* FOR DISCHARGE OF ENVIRONMENTAL POLLUTANTS
Part - A : Effluents

S. No.
Parameter
Inland surface water
Public sewers
Land for irrigation
Marine/coastalareas
.
2
3
.
.
.
.
(a)
(b)
(c)
(d)
1
Colour and odour See 6 of Annexure-1ISee 6 of Annexure-1ISee 6 of Annexure-1I
2
Suspended solids mg/l, max.
100
600
200
(a) For process waste water
(b) For cooling water effluent 10 per cent above total suspended matter of influent.
3
Particle size of suspended solidsshall pass 850 micron IS Sieve
-
-
(a) Floatable solids, solidsmax. 3 mm
(b) Settleable solids, max 856 microns
4
pH value 5.5 to 9.0
5.5 to 9.0
5.5 to 9.0
5.5 to 9.0
5
Temperatureshall not exceed 5oC above the receiving water temperature
shall not exceed 5oCabove the receiving water temperature
6
Oil and grease, mg/l max,
10
20
10
20
7
Total residual chlorine, mg/l max
1.0
-
-
1.0
8
Ammonical nitrogen (as N),mg/l, max.
50
50
-
50
9
Total kjeldahl nitrogen (as N);mg/l, max. mg/l, max.
100
-
-
100
10
Free ammonia (as NH3), mg/l,max.
5.0
-
-
5.0
11
Biochemical oxygen demand (3 days at 27oC), mg/l, max.
30
350
100
100
12
Chemical oxygen demand, mg/l, max.
250
-
-
250
13
Arsenic(as As).
0.2
0.2
0.2
0.2
14
Mercury (As Hg), mg/l, max.
0.01
0.01
-
0.01
15
Lead (as Pb) mg/l, max
0.1
1.0
-
2.0
16
Cadmium (as Cd) mg/l, max
2.0
1.0
-
2.0
17
Hexavalent chro-mium (as Cr + 6),mg/l, max.
0.1
2.0
-
1.0
18
Total chromium (as Cr) mg/l, max.
2.0
2.0
-
2.0
19
Copper (as Cu)mg/l, max.
3.0
3.0
-
3.0
20
Zinc (as Zn) mg/l, max.
5.0
15
-
15
21
Selenium (as Se)
0.05
0.05
-
0.05
22
Nickel (as Ni) mg/l, max.
3.0
3.0
-
5.0
23
Cyanide (as CN) mg/l, max.
0.2
2.0
0.2
0.2
24
Fluoride (as F) mg/l, max.
2.0
15
-
15
25
Dissolved phos- phates (as P),mg/l, max.
5.0
-
-
-
26
Sulphide (as S) mg/l, max.
2.0
-
-
5.0
27
Phenolic compounds (as C6H50H)mg/l, max.
1.0
5.0
-
5.0
28
Radioactive materials:
(a) Alpha emitters micro curie mg/l, max.
(b)Beta emittersmicro curie mg/l
10-7




10-6
10-7




10-6
10-8




10-7
10-7




10-6
29
Bio-assay test
90% suivival of fish after 96 hours in 100% effluent
90% suivival of fish after 96 hours in 100% effluen
90% suivival of fish after 96 hours in 100% effluen
90% suivival of
fish after 96 hours
in 100% effluen
30
Manganese
2 mg/l
2 mg/l
-
2 mg/l
31
Iron (as Fe)
3mg/l
3mg/l
-
3mg/l
32
Vanadium (as V)
0.2mg/l
0.2mg/l
-
0.2mg/l
33
Nitrate Nitrogen
10 mg/l
-
-
20 mg/l

* These standards shall be applicable for industries, operations or processes other than those industries, operations or process for which standards have been specified in Schedule of the Environment Protection Rules, 1989.
Part - B: Wastewater Generation Standards

S. No.
Industry
Quantum
1
Integrated Iron & Steel 16 m3/tonne of finished steel
2
Sugar 0.4m3/tonne of cane crushed
3
Pulp & Paper Industries
(a) Large pulp & paper
       (i) Pulp & paper
       (ii) Rayon grade pulp

(b) Small pulp & paper
        (i) Agro-residue based
       (ii) Waste paper based


175 m3/tonne of paper produced
150 m3/tonne of paper


150 m3/tonne of paper produced
50 m3/tonne of paper produced
4
Fermentation Industries
(a) Maltry
(b) Brewer
(c) Distillery

3.5 m3/tonne of grain processed
0.25 m3/KL of beer produced
12 M3/KL of alcohol produced
5
Caustic Soda
(a) Membrane cell process


(b) Mercury cell process

1m3/tonne of caustic soda produced excluding cooling tower blowdown

4 m3/tonne of caustic soad produced (mercury bearing). 10% below down permitted for cooling tower.
6
Textile Industries: Man-made fibre
(i) Nylon & Polyster
(ii) Voscose Staple Fibre
(iii) Viscose Filament Yarn

120 m3/tonne of fibre produced
150 m3/tonne of product
500 m3/tonne of product
7
Tanneries 28 m3/tonne of raw hide
8
Starch Glucose and related products 8 m3/tonne of maize crushed
9
Dairy 3 m3/kl of Milk
10
Natural rubber processing industry Fertiliser
(a) Straight nitrogenous fertiliser
(b) Straight phosphatic fertiliser (SSP & TSP) excluding manufacture of any acid
(c) Complex fertiliser
4 m3/tonne of rubber
11
Biochemical oxygen demand (3 days at 27oC), mg/l, max.

(a) Straight nitrogenous fertiliser

(b)Straight phosphatic fertiliser (SSP & TSP)     excluding manufacture of any acid

(c)Complex fertiliser


5 m3/tonne of urea orequivalent produced

0.5 m3/tonne of SSP/TSP


Standards of nitrogenous and phospathic fertilisers are applicable depending on the primary product

Part-C Load based standards
1. Oil Refinery Industry

Parameter Quantum in Kg/1000 tonnes of crude processed
Oil & grease 10.00
Phenol 0.70
BOD 10.50
Suspended solids 14.00
Sulphide 0.35

2. Large Pulp & Paper, News Print/Rayon grade plants of capacity above 24,000 tonne/annum
Parameter Quantum
Total Organic Chloride (TOCI) 2 kg/tonne of product


Part-D Concentration Based Standards

1. General Emission Stanadards

S.No.
Parameter Concentration not to exced (in mg/Nm3)
1.
Particulate matter (PM)
150
2.
Total fluoride
25
3
Asbestos
4 Fibres/cc and dust should not be more than 2 mg/Nm3
4
Mercury
0.2
5.
Chlorine
15
6
Hydrochloric acid vapour and mist
35
7
Sulphuric acid mist
50
8
Carbon monoxide
1%
9
Lead
10


II. Equipment based standards
For dispersion of sulphur dioxide; a minimum stack height limit is accordingly prescribed as below :

S.No.
Power generation capacity/ Steam generation capacity
Stack height (metre)
1.
Power generation capacity:
-500 MW and more
-200/210 MW and
above to less than 500 MW
-Less than 200/210 MW

275

220
H=(Q)0.3
2.
Steam generation capacity
-Less than 2 tonne/hr
-2 to 5 tonne/hr
-5 to 10 tonne /hr
-10 to 15 tonne/hr
-15 to 20 tonne/hr
-20 to 25 tonne/hr
-25 to 30 tonne/hr
-More than 30 tonne/hr


09
12
15
18
21
24
27
30 or as per formula
H=14(Q)0.3 whichever
is more

Note:
H=Physical height of the stack in metre
Q=Emission rate of SO2 in kg/hr.

III. Load/Mass?Based Standards

S.No.
Industry
Parameter
Standard
1
Fertilizer (urea)
-commissioned prior to 1.1.82
-commissioned after 1.1.82
Particulate Matter

Particulate Matter
2kg/tonne of product

0.5 kg/tonne of product
2
Copper, lead and zinc semltor Sulphur dioxide 4 kg/tonne of concentrated
(100%) acid produced
3
Nitric acid Oxides of nitrogen 3 kg/tonne of weak acid
(before concentration) produced
4
Sulphuric acidSulphur dioxide 4 kg/tonne of concentrated
(100%) acid produced
5
Coke ovenCarbon monoxide3 kg/tonne of coke produced
6
Oil Refineries
-Distillation (atmospheric+vacuum)
-Catalytic cracker
-Sulphur recovery unit

Sulphur dioxide

-do
-do-

0.25kg/tonne of feed in this process

0.25kg/tonne of feed in this process
120 kg/tonne of Sulphur in the feed
7
Aluminium plants:
(i) Anode bake oven

(ii) Pot room
(a) VSS
(b) HSS
(c) PBSW
(d) PBCW

Total fluoride


-do-
-do-
-do
-do-

0.3 kg/tonne of aluminium


4.7 kg/tonne of aluminium
6 kg/tonne of aluminium
2.5 kg/tonne of aluminium
1.0 kg/tonne of aluminium
8
Glass industry
(a) Furnace capacity
(i) Up to the product draw capacity of 60 tonne/day
(ii) Product draw capacity more than 60 tonne/day


Particulate Matter

-do-


2 kg/hr

0.8 kg/tonne of product drawn

Note: VSS = vertical stud soderberg; HSS = horizontal stud soderberg;
PBSW = pre backed side work and PBCW = pre backed centre work

PART-E Noise Standards

A. Noise limits for automobiles (from at 7.5 metre in dB(A) at the manufacturing stage)

  1. Motorcycle, scooters & three wheelers                                                                          80
  2. Passenger cars                                                                                                               82
  3. Passenger or commercial vehicles upto 4 tonne                                                               85
  4. Passenger or commercial vehicles above 4 tonne and upto 12 tonne                                89
  5. Passenger or commercial vehicles exceeding 12 tonne                                                     91

B. Domestic appliances and construction equipments at the manufacturing stage to be achieved by 31st December, 1993.

  1. Window air conditioners of 1 -1.5 tonne                                                                       68
  2. Air coolers                                                                                                                    60
  3. Refrigerators                                                                                                                 46
  4. Diesel generator for domestic purposes                                                                          85-90
  5. Compactors (rollers), front loaders,                                                                                75
    concentrate mixers, cranes (movable), vibrators and saws
                                                            ANNEXURE-I
                                            (For the purpose of Parts-A, B and C)

The state boards shall fallow the following guidelines in enforcing the standards specified under Schedule IV.
  1. The wastewater and gases are to be treated with the best available technology (BAT) in order to achieve the prescribed standards.
  2. The industries need to be encouraged for recycling and reuse of waste materials as far as practicable in order to minimise the discharge of wastes into the environment.
  3. The industries are to be encouraged for recovery of biogas, energy and reusable materials.
  4. While permitting the discharge of effluents and emissions into the environment, State Boards have to taken into account the assimilative capacities of the receiving bodies, especially water bodies so that quality of the intended use of the receiving waters is not affected. Where such quality is likely to be affected, discharges should not be allowed into water bodies.
  5. The central and state boards shall put emphasis on the implementation of clean technologies by the industries in order to increase fuel efficiency and reduce the generation of environmental pollutants.
  6. All efforts should be made to remove colour and unpleasant odour as far as practicable.
  7. The standards mentioned in this Schedule shall also apply to all other effluents discharged such as mining, and mineral processing activities and sewage.
  8. The limit given for the total concentration of mercury in the final effluent of caustic soda industry, is for the combined effluent from (a) cell house; (b) brine plant; (c) chlorine handling; (d) hydrogen handling; and (e) hydrochloric acid plant.
  9. All effluents discharged including from the industries such as cotton textile, composite woollen mills, synthetic rubber, small pulp & paper, natural rubber, petro?chemicals, tanneries, paint, dyes, slaughter houses, food & fruit processing and dairy industries into surface waters shall conform to the BOD limit specified above, namely, 30 mg/l. For discharge of an effluent having a BOD more than 30 mg/l, the standards shall conform to those given above for other receiving bodies, namely, sewers, coastal waters and land for irrigation.
  10. Bio-assay shall be made compulsory for all the industries, where toxic and non?biodegradable chemicals are involved.
  11. In case of fertilizer industry, the limits in respect of chromium and fluoride shall be complied with at the outlet of chromium and fluoride removal units respectively.
  12. In case of pesticides.
    1. The limits should be complied with at the end of the treatment plant before dilution.
    2. Bio-assay test should be carried out with the available species of fish in the receiving water, the COD limits to be specified in the consent conditions should be correlated with the BOD limits.
    3. In case metabolites and isomers of the pesticides in the given list are found in significant concentrations, standards should be prescribed for these also in the same concentration as the individual pesticides.
    4. Industries are required to analyse pesticides in wastewater by advanced analytical methods such as GLC/HPLC.
  13. The chemical oxygen demand (COD) concentration in a treated effluent, if observed to be persistently greater than 250 mg/l before disposal to any receiving body (public sewer, land for irrigation, inland surface water and marine coastal areas), such industrial units are required to identify chemicals causing the same. In case these are found to be toxic as defined in the Schedule?I of the Hazardous Rules, 1989, the state boards in such cases shall direct the industries to install tertiary treatment stipulating time limit.
  14. Standards specified in Part A of Schedule?VI for discharge of effluents into the public sewer shall be applicable only if such sewer leads to a secondary treatment including biological treatment system otherwise the discharge into sewers shall be treated as discharge into inland surface waters.

ANNEXURE-II
(For the purpose of Parts-D)

  1. The States Boards shall fallow the following guidelines enforcing the standards specified under Schedule-VI.

    1. In case of cement plants, the total dust (from all sections) shall be within 400 mg/Nm3 and 250 mg/Nm3 for the plants upto 200 tpd and more than 200 tpd capacities respectively.
    2. In respect of calcination process (e.g. aluminium plants), kilns and step grate bagasse?fired?boilers, particulate matter emissions shall be within 250 mg/Nm3.
    3. In case of thermal power plants commissioned prior to 1?1?1982 and having generation capacity less than 62.5 MW, the particulate matter emission shall be within 350 mg/Nm3.
    4. In case of Lime Kilns of capacity more than 5 tpd and 40 tpd, the particulate matter emission shall be within 500 mg/Nm3.
    5. In case of horse shoe/pulsating grate and spreader stroker bagasse?fired?boilers, the particulate matter emission shall be within 500 (12% CO2) and 800 (12% CO2) mg/Nm3 respectively. In respect of these boilers, if more than one is attached to a single stack, the emission standard shall be fixed, based on added capacity of all the boilers connected with the stack.
    6. In case of asbestos dust, the same shall not exceed 2 mg/Nm3.
    7. In case of the urea plants commissioned after 1.1.1982, coke ovens and lead glass units, the particulate matter emission shall be within 50 mg/Nm3.
    8. In case of small boilers of capacity less than 2 tonne/hr and between 2 to 5 tonnes/hr, the particulate matter emissions shall be within 1600 and 1200 mg/Nm3.
    9. In case of integrated iron & steel plants, particulate matter emission upto 400 mg/Nm3 shall be allowed during oxygen lancing.
    10. In case of stone crushing units, the suspended particulate matter contribution value at a distance of 40 metre from a controlled, isolated as well as from a unit located in a cluster should be less than 600 micrograms/Nm3.

    These units must also adopt the following pollution control measures:

    1. dust containment cum suppression system for the equipment;
    2. construction of wind breaking walls;
    3. construction of the metalled roads within the premises;
    4. regular cleaning and wetting of the ground within the premises;
    5. growing of a green belt along the periphery.
    6. In case of ceramic industry, from the other sources of pollution, such as basic raw material and processing operations, heat recovery dryers, mechanical finishing operation all possible prevention measures should be taken to control particulate matter emissions as far as practicable.
  2. The total fluoride emissions in respect of glass and phosphatic fertilizers shall not exceed 5 mg/Nm3 and 25 mg/Nm3 respectively.
  3. In case of copper, lead and zinc smelting, the off?gases may as far as possible be utilized for manufacturing sulphuric acid.
  4. In case of cupolas (foundries) having capacity (melting rate) less than 3 tonne hour, the particulate matter emissions shall be within 450 mg/Nm3. In these cases it is essential that stack is constructed over the cupolas beyond the charging door and the emissions are directed through the stack, which should be at least six times the diameter of cupola. In respect of arc furnaces and induction furnaces. Provision has to be made collecting the fumes before discharging the emissions through the stack.
Source
[GSR 801 (E), EPA, 1986, dated Dec. 31, 1993]

Source: Central Pollution Control Board (CPCB)

   
   
   
   
   
   
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