Revised CPCB Guidelines for Continuous Emission Monitoring Systems August 2018


Revised CPCB Guidelines for Continuous Emission Monitoring Systems


In order to track release of pollutants through air emissions and effluent discharge from industries with high pollution potential, Central Pollution Control Board (vide its letter No. B-29016/04/06PCI-1/5401 dated 05.02.2014 issued directions under section 18(1) b of the Water and Air Acts to the State Pollution Control Boards and Pollution Control Committees for directing the 17 categories of highly polluting industries (such as Pulp & Paper, Distillery, Sugar, Tanneries, Power Plants, Iron & Steel, Cement, Oil Refineries, Fertilizer, Chloral Alkali Plants, Dye & Dye Intermediate Units, Pesticides, Zinc, Copper, Aluminum, Petrochemicals and Pharma Sector, etc.,), Common Effluent Treatment Plants (CETP),Sewage Treatment Plants (STPs), Common Bio Medical Waste and Common Hazardous Waste Incinerators; for installation of online effluent quality and emission monitoring systems.

The directions envisage:
a) Installation of online emission quality monitoring system in 17 categories of highly polluting industries and in Common Hazardous waste and Biomedical waste incinerators for measurement of the parameters, Particulate Matter, NH3 (Ammonia), SO2 (Sulphur Dioxide), NOX (Oxides of Nitrogen) and other sector specific parameters, not later than by March 31, 2015 and transmission of online data so generated imultaneously to SPCB/PCC and CPCB as well. The deadline was later extended to June 31, 2015.

b) Installation of surveillance system with industrial grade IP (Internet Protocol) cameras having PAN, Tilt, Zoom (PTZ) with leased line real time connection for data streaming and transmission of the same in case of industries claiming Zero Liquid Discharge (ZLD); and

c) Ensure regular maintenance and operation of the online system with tamper proof mechanism having facilities for online calibration (onsite/ offsite; Remote).

In addition to above, G.S.R. 96(E) January 29, 2018 Notified by MoEF&CC under Environment (Protection) Act, 1986 mandates installation of CEMS with the Boilers used in the Industries namely Sugar, Cotton Textile, Composite Woolen Mills, Synthetic Rubber, Pulp & Paper,Distilleries, Leather Industries, Calcium Carbide, Carbon Black, Natural Rubber, Asbestos, Caustic Soda, Small Boilers, Aluminium Plants, Tanneries, Inorganic Chemicals & other such industries using boilers.

Parameters required to be monitored in the stack emissions using Continuous Emission Monitoring system, are industry specific and are specified below: –
a) PM (Particulate Matter)
b) HF (as Total Fluoride)
c) NH3 (as Ammonia)
d) SO2 (Sulphur Dioxide)
e) NOX (Oxides of Nitrogen as NO2)
f) Cl2 (Chlorine)
g) HCl (Hydrochloric acid) and HF (Hydro Fluoric Acid)
h) TOC (Total Organic Carbon) / THC (Total Hydro Carbon) / VOC (Volatile Organic Carbon)- CnHm
i) Hg (Gaseous mercury)
j) Process parameters (Mandatory) to be monitored at each stack at sampling point/plane:
1 Temperature
2 Flow (applicable wherever load based standards prescribed and DC Tribo system installed for monitoring of PM)
k) Diluents gas CO2 or O2 as prescribed in the emission standards of respective processes /industries
l) Carbon Monoxide as prescribed in the emission standards of respective processes /industries i.e. Incinerators, etc.;
m) The emission values should be corrected for Moisture Content (For Insitu and Hot extractive analyzer real time moisture monitoring values of inbuilt measurements can be used). Moisture content value recorded during manual monitoring conducted by empaneled labs, at the time of verification/calibration can be considered for correction.
n) For normalization of emission values absolute pressure is also required to be monitored in the sampling plane. Value recorded during manual
monitoring can be used for normalization.
o) Real time moisture monitoring is incinerator stack.

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