Panchayat:Repo18/Law Manual Page1153

Copper (mg/kg) 300.00 300.00
Lead (mg/kg) 100.00 100.00
Mercury (mg/kg) 0.15 0.15
Nickel (mg/kg) 50.00 50.00
Zinc (mg/kg) 1000.00 1000.00
C/N ratio <20 Less than 20:1
pH 6.5-7.5 (1:5 solution) maximum 6.7
Moisture, percent by weight, maximum 15.0-25.0 25.0
Bulk density (g/cm3) <1.0 Less than 1.6
Total Organic Carbon, per cent by weight, minimum 12.0 7.9
Total Nitrogen (as N), per cent by weight, minimum 0.8 0.4
Total Phosphate (as P,0g) percent by weight, minimum 0.4 10.4
Total Potassium (as K,0), percent by weight, minimum 0.4 -
Colour Dark brown to black -
Odour Absence of foul Odor -
Particle size Minimum 90% material should pass through 4.0 mm IS sieve Minimum 90% material should pass through 4.0 mm IS sieve
Conductivity (as dsm-1), not more 4.0 8.2
  • Compost (final product) exceeding the above stated concentration limits shall not be used for food crops. However, it may be utilized for purposes other than growing food crops.

B. Standards for treated leachates.— The disposal of treated leachates shall meet the following standards, namely:

Sl No Parameter Standard Mode of Disposal
Inland surface water Public Sewers Land disposal
(1) (2) (3) (4) (5)
1. Suspended solids, mg/l, max 100 600 200
2. Dissolved solids (inorganic) mg/l, max 2100 2100 2100
3. pH value 5.5 to 9.0 5.5 to 9.0 5.5 to 9.0
4. Ammonical nitrogen (as N), mg/l, max. 50 50 -
5. Total Kjeldahl nitrogen (as N), mg/l, max. 100 - -
6. Biochemical oxygen demand (3 days at 27° C) max.(mg/l) 30 350 100
7. Chemical oxygen demand, mg/l, max. 250 - -
8. Arsenic (as As), mg/l, max 0.2 0.2 0.2
9. Mercury (as Hg), mg/l, max 0.01 0.01 -
10. Lead (as Pb), mg/l, max 0.1 1.0 -
11. Cadmium (as Cd), mg/l, max 2.0 1.0 -
12. Total Chromium (as Cr), mg/l, max 2.0 2.0 -
13. Copper (as Cu), mg/l, max 3.0 3.0 -
14. Zinc (as Zn), mg/l, max. 5.0 15 -