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Municipal Solid Wastes - Schedule IV
Standards for Composting Treated Leachates and Incineration
| 1. |
The waste processing or disposal facilities shall include composting, incineration, pelletisation, energy recovery or any other facility based on state-of-the-art technology duly approved by the Central Pollution Control Board. |
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| 2. |
In case of engagement of private agency by the municipal authority, a specific agreement between the municipal authority and the private agency shall be made particularly, for supply of solid waste and other relevant terms and conditions |
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| 3. |
In order to prevent pollution problems from compost plant and other processing facilities, the following shall be complied with, namely:- |
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(i) |
The incoming wastes at site shall be maintained prior to further processing. To the extent possible, the waste storage area should be covered. If, such storage is done in an open area, it shall be provided with impermeable base with facility for collection of leachate and surface water run-off into lined drains leading to a leachate treatment and disposal facility; |
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(ii) |
Necessary precautions shall be taken to minimize nuisance of odour, flies, rodents, bird menace and fire hazard; |
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(iii) |
In case of breakdown or maintenance of plant, waste intake shall be stopped and arrangements be worked out for diversion of wastes to the landfill site; |
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(iv) |
Pre-process and post-process rejects shall be removed from the processing facility or regular basis and shall not be allowed to pile at the site. Recyclables shall be routed through appropriate vendors. the non-recyclables shall be sent for well designed landfill site(s). |
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(v) |
In case of compost plant, the windrow area shall be provided with impermeable base. Such a base shall made of concrete or compacted clay, 50 cm thick, having permeability coefficient less than 10-7 cm/sec. The base shall be provided with 1 to 2 per cent slope and circled by lined drains for collection of leachate or surface run-off; |
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(vi) |
Ambient air quality monitoring shall be regularly carried out particularly for checking odour nuisance at down wind direction on the boundary of processing plant. |
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(vii) |
In order to ensure safe application of compost, the following specifications for compost quality shall be met, namely:- |
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| Parameters | Concentration not to exceed * (mg/kg dry basis, except pH value and C/N ratio) | |||||||||
| Arsenic | 10.00 | |||||||||
| Cadmium | 5.0 | |||||||||
| Chromium | 50.0 | |||||||||
| Copper | 300.0 | |||||||||
| Lead | 100.0 | |||||||||
| Mercury | 0.15 | |||||||||
| Nickel | 50.0 | |||||||||
| Zinc | 1000.0 | |||||||||
| C/N ratio | 20-40 | |||||||||
| pH | 5.5-8.5 | |||||||||
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* 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. |
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| 4. |
The disposal of treated leachates shall follow the following standards namely:- |
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| S.No. | Parameter | Standards (Mode of disposal) | ||||||||
| Inland Surface Water | Public Sewers | Land Disposal | ||||||||
| 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 27oc) 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 | --- | ||||||
| 15. | Nickel (as Ni), mg/l, max. | 3.0 | 3.0 | --- | ||||||
| 16. | Cyanide (as CN), mg/l, max. | 0.2 | 2.0 | 0.2 | ||||||
| 17. | Chloride (as Cl), mg/l, max | 1000 | 1000 | 600 | ||||||
| 18. | Floride (as F), mg/l, max. | 2.0 | 15 | --- | ||||||
| 19. | Phenolic Compounds (as C6H5OH), mg/l, max. | 1.0 | 5.0 | --- | ||||||
| Note: | While discharging treated leachates into inland surface waters, quantity of leachates being discharges and the quantity of dilution water available in the receiving water body shall be given due consideration. | |||||||||
| 5. | The incinerators shall meet the following operating and emission standards, namely:- | |||||||||
| A. | Operating Standards | |||||||||
| (1) | The combustion efficiency (CE) shall be at least 99.00% | |||||||||
| (2) | The combustion efficiency is computed as follows | |||||||||
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| B. | Emission Standards | |||||||||
| Parameter | Concentration mg/Nm3 at (12% CO2 correction) | |||||||||
| (1) Particulate Matter | 150 | |||||||||
| (2) Nitrogen Oxides | 450 | |||||||||
| (3) HCl | 50 | |||||||||
| (4) Minimum stack height shall be 30 meters above ground. | ||||||||||
| (5) Volatile organic compounds in ash shall not be more than 0.01% | ||||||||||
| Note: | ||||||||||
| (1) | Suitably designated pollution control devices shall be installed or retrofitted with the incinerator to achieve the above emission limits, if necessary. | |||||||||
| (2) | Wastes to be incinerated shall not be chemically treated with any chlorinated disinfectants. | |||||||||
| (3) | Chlorinated plastics shall not be incinerated. | |||||||||
| (4) | Toxic metals in incineration ash shall be limited within the regulatory quantities as specified in the Hazardous Waste (Management and Handling) Rules, 1989 as amended from time to time. | |||||||||
| (5) | Only low sulphur fuel like LDO, LSHS, Diesel shall be used as fuel in the incinerator. | |||||||||
Courtesy - http://dpcc.delhigovt.nic.in/act_municipal.htm
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