General Standards For Discharge Of Environmental Pollutants

Part – A : Effluents 


Sl. No.


Parameter

Standards

Inland surface water

Public sewers

Land of irrigation

Marine / coastal areas

1. Colour and odour
See 6 of
Annexure-1
--
See 6 of Annexure-1
See 6 of
Annexure-1
2. Suspended solids mg/l, max.

100

600

200

a.

b.

For process waste water 100
For cooling water effluent 10 per cent above total suspended matter of influent

3. Particle size of suspended solids

Shall pass 850 micron IS Sieve

--

a.

b.
Floatable solids, solids max. 3 mm.
Setleable 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. Temperature

Shall not exceed 5oC above the receiving water temperature.

--

--

Shall not exceed 5oC above 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 nitrogen (as N); 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) mg/l, max

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

0.1

--

2.0

16. Cadmium (as Cd) mg/l, max.

2.0

1.0

--

2.0

17. Hexavalent chromium (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

--

30

20. Zinc (as Zn) mg/l, max.

5.0

15

--

15

21. Selenium (as Se) mg/l, max.

0.05

0.05

--

0.05

22. Nickel (as Ni) mg/l, max.

3.0

3.0

--

50

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 phosphates (as P), mg/l, max.

5.0

--

--

--

26. Sulphide (as S) mg/l, max.

2.0

--

--

5.0

27. Phenolic compounds (as C6H5OH) mg/l, max.

1.0

5.0

--

5.0

28. Radioactive materials :
a. Alpha emitters micro cure mg/l, max.

10-7

10-7

10-8

10-7

b. Beta emitters micro cure, mg/l, max.

10-6

10-6

10-7

10-6

29. Bio-assay test

90% suivival of fish after 96 hours in 100% effluent

90% survival of fish after 96 hours in 100% effluent

90% survival of fish after 96 hours in 100% effluent

90% sunfival of fish after 96 hours in 100% effluent.

30. Manganese (as Mn)

2 mg/l

2 mg/l

2 mg/l

2 mg/l

31. Iron (as Fe)

3 mg/l

3 mg/l

3 mg/l

3 mg/l

32. Vanadium (as V)

0.2 mg/l

0.2 mg/l

--

0.2 mg/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 Waste Water Generation Standards

S. No.

Industry

Quantum

1. Integrated Iron & Steel 16 m3/tonne of finished steel
2. Sugar 0.4 m3/tonne of cane crushed
3.

 

 

 

Pulp & Paper Industries
    (a) Larger pulp & paper
                (i) Pulp & papter


                (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. Brewery

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

 

1 m3/tonne of caustic soda produced excluding cooling tower blowdon.

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 figre produced.

150 m3/tonne of product

500 m3/tonne of product

7. Tanneries 28 m3/tonne of maize crushed
8. Starch Glucose and related products 8 m3/tonne of maize crushed
9. Dairy 3 m3/kl of Milk
10. Natural rubber processing industry 4 m3/tonne of rubber
11. Fertiliser

a. Straight nitrogenous fertiliser


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

c. Complex fertiliser



5 m3/tonne of urea or equivalent produced

0.5 m3/tonne of SSP/TSP


Standards of nitrogenous and phosphatic 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

 

  1. Large Pulp and Paper, News Print / Rayon grade plants of capacity above 24,000 tonne / annum.

Parameter

Quantum

Total Organic Chloride (TOCL)

2 Kg / tonne of product.

 

Part - D Concentration Based Standards

I. General Emission Standards

Sl.No.

Parameter

Concentration not to exceed (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

34

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 :

Sl.No.

Power generation capacity / Steam generation capacity

Stack height (metre) 

(i)

 

 

 

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

(ii)   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

 
Note:
H = Physical height of the stack in metre

Q = Emission rate of SO2 in kg / hr.

III. Load / Mass - Based Standards 

Sl. No.

Industry

Parameter

Standard

1.

Fertilizer (Urea) commissioned prior to 01.01.1982.

Particulate matter

2 kg/ tonne of product

2.

Copper, lead and zinc smeltor converter

Sulphur dioxide

4 kg/tonne of concentrated (100%) acid produced.

3.

Nitric acid

Oxides of nitrogen

3 kg/tonne of weak acide (before concentration) produced.

4.

Sulphuric acid

Sulphur dioxide

4 kg/tonne of concentrated (100%) acid produced.

5.

Coke oven

Carbon monoxide

3 kg/tonne of coke produced.

6.

Oil Refineries

  • Distillation (atmospheric + Vacuum)
     

  • Catalytic cracker
     

  • Sulphur recovery unit

 

Sulphur dioxide




- do -


- do -

 

0.25 Kg/tonne of feed in this process.

 

2.5 kg/tonne of feed in this process.

120 kg/tonne of Sulphur in the feed.

7.

Aluminium plants :

(i) Anode bake over

(ii) Pot room

  1. VSS
  2. HSS
  3. PBSW
  4. PBCW

 

Total fluoride

 


do -
- do -
- do -
- do -

 

0.3 kg/tonne of amuminium.

 


4.7 kg/tonne of amuminium.
6 kg/tonne of amuminium.
2.5 kg/tonne of amuminium.
1.0 kg/tonne of amuminium.

8

Glass industry

(a) Furnace capacity

  1. up to the product draw capacity of 60 tonne/day
  1. 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.

For more details click here

 

 PART - E : Noise Standards

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

(a)

Motorcycle, scooters & three wheelers

80

(b)

Passenger cars

82

(c)

Passenger or commercial vehicles upto 4 tonne

85

(d)

Passenger or commercial vehicles above 4 tonne and upto 12 tonne

89

(e)

Passenger or commercial vehicles exceeding 12 tonne

91

 

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

(a)

Window air conditioners of 1 - 1.5 tonne

68

(b)

Air coolers

60

(c)

Regrigerators

46

(d)

Diesel generator for domestic purposes

85-90

(e)

Compactors (rollers), front loaders, concrete mixers, cranes (movable), vibrators and saws

75 

 

ANNEXURE - I

(For the purpose of Parts - A, B and C)

The state boards shall follow the following guidelines in enforcing the standards specified under Schedule-VI.

  1. The wastewaters 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 waste 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 take into account the assimilative capacities of the receiving bodies,especially water bodies so that quality of the intended use of the receiving water 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 practicable.
     

  7. The standards mentioned in this Schedule shall also apply to all other effluents discharge 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) hydro chloric 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,30mg/l. Ffor 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 fertililzer,industry the limits in respect of chromium and fluoride shall be compiled with ar the outlet of chromium and fluoride removal units respectively.
     

  12. In case of pesticides.

    1. The limits should be compiled 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 metabolities and isomere 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.

  1. The chemical oxygen demand (COD) concentration in a treated effluent,if observed to be persistently greater than 250mg/l before disposal to any receiving body (publ;ic sewer, land for irrigation,inland surface water and marine coastal ares), such industrial units are required to identify chemicals causing the same. In case these are found to be toxic as defined in the Schedule-1 of the Hazardous Rules,1989, the state boards in such cases shall direct the industries to install teritary treatment stipulating time limit.
     

  2. 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 Part D)

  1. The States Boards shall follow 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  for the plants upto 200 tpd and more than 200 tpd capacities respectively.
       

    1. In respect of calcination process (.e.g. aluminum plants), kilns and step grate bagasse-fired-boilers, particulate matter emissions shall be within 250 mg/NM3 .
       

    2. In case of thermal power plants commissioned prior to 1-1-1992 and having generation capacity less than 62.5 MW, the particulate matter emission shall be within 350 mg/NM3 .
       

    3. In case of Lime Kilns of capacity more than 5 tpd and upto 40 tpd, the particulate matter emission shall be within 500 mg/NM3 .
       

    4. In case of horse shoe/pulsating grate and spreader stroker bagassee=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 standards shall be fixed, based on added capacity of all the boilers connected with the stack.
       

    5. IN case of asbestos dust, the same shall not exceed 2 mg/NM3 .
       

    6. 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 .
       

    7. 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 .
       

    8. In case of integrated iron & steel plants, particulate matter emission upto 400 mg/NM3 shall be allowed during oxygen lancing.
       

    9. In case of stone crushing units, the suspended particulate matter contribution value at a distance of 40 metres from a controlled, isolated as well as from a unit located in a cluster should be less than 600 mg/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.
         

    1. 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 preventive measures should be taken to control particulate matter emissions as far as practicable.

  1. The total fluoride emissions in respect of glass and phosphatic fertilisers shall not exceed 5 mg/NM3 . and 25 mg/NM3 .respectively.

  1. In case of copper, lead and zinc smelting, the off-gases may as far as possible be utilised for manufacturing sulphuric acid".
     

  2. 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


Close window