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Continuous Effluent/Emission

Monitoring Systems (CEMS) of

Industries

B. R. Naidu

Director

Central Pollution Control Board

Vadodara

February 24, 2018

CEMS (Continuous Emission/Effluent Monitoring System)

The system composed of Equipment, Instrument to draw,

condition, analyze the flue gas sample/wastewater and

provide permanent record of emissions/discharge or process

control parameters continuously at real time basis is called

Continuous Emission/Effluent Monitoring System (CEMS)

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Benefits of CEMS

� Provides real time data.

� Remotely accessible to operator/regulator.

� Greater transparency in monitoring of performance.

� Continuous performance check of Air Pollution Control Devices /

treatment methods of wastewater and optimization of resources used.

� Time series analysis possible with continuous data.

� Reduction in regulatory visits as well as long term monitoring cost.

� Expected better compliance through self regulation by industry hence

lower emission.

Diagram of Continuous Effluent Monitoring Station and data transmission system

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DIRECTIONS ISSUED BY CPCB to all SPCBs/ PCCs under Section 18 (1)(b) of Water Act and Air Act

Date of issue:

February 05, 2014

Target Date:

March 31, 2015

Target date extended to:

June 30, 2015

CPCB ISSUED DIRECTIONS to defaulting Industries (17 Category) under Section 5 of E P Act: after June 2015

DIRECTIONS ISSUED ON 05-02-2014

a. To Install online continuous Stack Emission Monitoring Systems

(CSEMS) in 17 categories of highly polluting industries and in

Common Hazardous waste and Biomedical waste incinerators for

the parameters(industry/sector specific parameter) specified

by CPCB; not later than by March 31,2015;

b. To install online effluent quality monitoring system at the outlet

of effluent treatment plants of the 17 category industries and in

CETPs for the measurement of the parameters(industry/sector

specific parameter) like flow, pH, COD, BOD, TSS and other

specified parameters specified by CPCB; not later than by March31, 2015;

DIRECTIONS ISSUED ON 05-02-2014

Contd..

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c. To connect and upload the online emission and effluent monitoring

data at SPCBs/PCCs and CPCB server in a time bound manner but not

later than by March 31,2015;

d. To ensure regular maintenance and operation of the online system

with tamper proof mechanism having facilities for online calibration;

e. To submit bank guarantee of 25 % of the cost of online monitoring

systems (emission and effluent whichever applicable) for ensuring

timely installation of online monitoring systems within 90 days from

the date of receipt of directions issued by SPCBs/PCCs to the

industries;

Later on the same directions were issued for installation of CEMS and

data submission for Grossly Polluting Industries (GPI) on River Ganga

basin viz., Textile, Dairy, Slaughter House etc.

DIRECTIONS ISSUED ON 05-02-2014

Contd..

� All 17 Category of industries has

to monitor effluent parameters

except Cement industries

� pH, BOD, COD, TSS are common

parameters to be monitored by

most category of industries

� Flow meter has to be installed

by all category of industries for

monitoring effluent discharged.

� CCTV camera has to be

installed by all ZLD units and

units discharging Effluent to

CETP and the video feed of the

those cameras hat to be

submitted to CPCB

List of Parameter for Continuous Monitoring as per CPCB Guidelines

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Real-time data from Industries- Initiation & Challenges Faced

Heterogeneous Systems: � Multiple instruments

� Multiple instrument suppliers

� Multiple Data formats

� Multiple platforms

� Multiple Communication protocols

� Correctness of Data transmitted ?????

� Data collection from heterogeneous systems

Approach adopted by CPCB for data collection from CEMS

In order to overcome the heterogeneity of the systems different

Instrument Suppliers (IS) were allowed to install their physical

servers (Govt. data on Cloud was not allowed) in CPCB and asked to

fetch the data from all their installations and display real-time data

in their respective web-portal

(Now with change in policy, servers of private suppliers are removed

and is switched to cloud based system)

S1, S2, S3…S1, S2, S3…S1, S2, S3…S1, S2, S3…SnSnSnSn

Server AServer AServer AServer A

S1, S2, S3…S1, S2, S3…S1, S2, S3…S1, S2, S3…SnSnSnSn

Server Server Server Server

BBBB

S1, S2, S3…S1, S2, S3…S1, S2, S3…S1, S2, S3…SnSnSnSn

Server Server Server Server

CCCC

IS WebIS WebIS WebIS Web----portalportalportalportal IS WebIS WebIS WebIS Web----portalportalportalportalIS WebIS WebIS WebIS Web----portalportalportalportal

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Scenario: Post Directions issued

The number of industries installed and started transmitting data

gradually increased post directions issues. The following table

shows the total number of industries integrated data with CPCB

Server since 2010:

YearYearYearYear No.No.No.No. ofofofof industries transmitting industries transmitting industries transmitting industries transmitting

data from CEMSdata from CEMSdata from CEMSdata from CEMS

No. of serversNo. of serversNo. of serversNo. of servers

installedinstalledinstalledinstalled

2010-11 10 2

2011-12 17 4

2012-13 100 6

2013-14 (Direction issued) 150 8

2014-15 200 11

2015-16 1800 36

2016-17 2240 42

All IS (Technology Provider) servers are shifted to cloud servers and there are no

physical servers installed at CPCB now

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CPCB Central Portal for CEMS data

� Data was available in many IS

servers and in different formats.

� Access of data from different

servers/portals was herculean task

� CPCB has developed the common

software which gets data from all

instrument suppliers’ server and

can be access at its Central Portal.

� Officials of CPCB and SPCB has

access to this central portal

� Data on single platform may be

used for compliance verification

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CPCB Policy for Real Time CEMS data collection

CPCB has defined data submission policy for Industry, Instrument Supplier

(Technology Provider) and SPCB

Data Policy for Industry:

� Industry has to make arrangement of data submission through IS which are

submitting data to CPCB as per CPCB laid down requirements

� Sole responsibility of real time data submission to CPCB lies with the industry.

Industry has to ensure that data is received at CPCB portal on real time basis

without any interruption and if interruption are observed, IS should be

immediately informed and corrective action have to be taken by industry and IS.

� Each industry has to ensure 85% of data availability

� Industry can migrate to one IS to other while it has to ensure:• All previous is migrated to new IS server

• Migration information is shared with CPCB along with data details

• New IS follows the CPCB requirements/procedures

Data Policy for Instrument Supplier (Technology Provider):

� CPCB does not register any agency as IS/Technology Provider. Any firm

either instrument supplier or combination of instrument supplier and

software developer can become a Technology provider an submit data to

CPCB on behalf of any industry, but as per CPCB requirements/formats

� Ownership of real time online continuous emission/effluent monitoring

station data collected at the server of IS/technology provider lies with

CPCB & SPCB

� Once an industry started data submission through any one of the

IS/technology provider, it is the responsibility of IS/technology provider to

collect, display and forward the data to CPCB Central Portal and SPCB’s or

any other portal without delay

� IS/technology provider will not charge any additional cost to the industry

for transferring this data to any other Govt. Agency or SPCB etc.

CPCB Policy for Real Time CEMS data collection contd…

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CPCB Policy for Real Time CEMS data collection contd…

Data Policy for SPCB:

� SPCB should obtain real time data from various portals of Is/Technology

Providers, which are operating round the clock and should build their own

Real Time Data Management System within their jurisdiction. But data to

CPCB should remain uninterrupted and patters in which data is being sought

shall not be altered.

� SPCB may enhance their ambit by covering other categories of industries in

their jurisdiction where such real time systems may prove useful.

� If any SPCB need to have additional information in the data submitted by

the industries, may communicate with CPCB and CPCB will incorporate the

same on mutual discussion, This may avoid multiple instructions to an

industry.

CPCB Industry Registration Portal

� Complete Inventory of industries

(17 categories) was not available at

CPCB

� Registration portal was developed

and is available at CPCB web-site

for industries to submit the details

� More than 4000 industries has

registered and submitted details

Registration portal

http://cpcbrtdms.nic.in/cpcbIndustry

Registration/

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SMS Alert generation

� SMS alert generation was implemented

on exceeding of prescribed standards.

� SMS & E-mail Alerts are sent to

concerned industry official for taking

corrective action

� Same alerts are sent to concerned

officials of CPCB

� Industries can respond to CPCB at the

e-mail id mentioned in SMS alert

� Most violating industries (based on

number of SMSs) are inspected by

respective RD

Challenges faced in implementing DATA Collection Mechanism

1. Details of parameters to be monitored at each stack level is not

available – parameters to be monitored may change with process

with which the stack is attached

2. There is no match between data (results) of manual monitoring

carried out by CPCB and the data of CEMS

3. Overlapping of Sector Example: Captive Power Plant in some of the industries (Steel) are being

treated as separate unit and hence difficulty in follow up with SMS alerts

4. Applying Standards for SMS Alerts� Standards vary w.r.t. fuel type, fuel ratio etc.

� Flow (many do not have totalizer installed)

� Non Uniformity in following standard by SPCBs

� Date of commissioning of the plant

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