Cement, Energy and Environment

6 . ' I I I ' I I I I • <I) (2) ' • I l -.. 4- THE GAZE1TE OF TNDTA : EXTRAORDINARY [PART 11-SF.C. J(i)] I I Note :- I a. The height of each stack including Clinker Grinding Plant, Coal Mill, Raw Mill , Grinding, Packaginj Section, etc. shall be of a minimum of 30 metres or. as per the formula H.. l4 (Q) 0 · , whichever is more, where "H" is the height of stack in metres and "Q" is the maximum quantity of sol expected to be emitted in kg/hr through the stack at 100 per cent rated capacity of the plant and calc~lated as per the norms of gaseous emission. b. Above norms shall be applicable even if pet-coke is mixed with coal or, used alone for clinker making in kiln provided, pet-coke has been notified as ·approved fuel' by the concerned State Pollution Control Board/ Pollution Control Committee under the Air (Prevention and Control of Pollution) Act, 1981 . : c. All monitored values for S0 2 and N0 2 shall be corrected to 10% Oxygen, on dry basis. The norms for S0 2 and N0 2 shall be applicable to stacks attached to kilr.. d. Scrubber meant for scrubbing emissions shall not be used as quencher Plants having I separate stack for gaseous emission for the scrubbing unit, the height of this stack shall be at least equal to the main stack. (3) (4) D.· Service wastewater· (without coproccsslng) All efforts shall be made by the industry for 'zero discharge' of service wastewater. In case, the industry prefers to discharge service wastewater, the following norms shall be complied with: Concentration not to exceed, milligramme ~r litre (except pH and temperature) ..E_H 5.5 to 9.0 - - Suspended Solids 100 Oi l o.nd Grease 10 Temperature not more than 50C higher than the intake water tc.~nperature C.· Stormwater - (l) Stormwater shall not be allowed to mix with effiuent, treated sewage, scrubber water (II) and/ or floor washings. Stormwarer within battery limits of industry shall be channelized through separate drain(s) as per natural gradient passing through high dens ity polyethylene lined pit(s) each having holding capacity of 10 minutes (hourly average) of ra infall for its catchment area.". 49