ONLINE CONTINUOUS EFFLUENT MONITORING SYSTEM A Presentation by - - PowerPoint PPT Presentation

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ONLINE CONTINUOUS EFFLUENT MONITORING SYSTEM A Presentation by JHARKHAND STATE POLLUTION CONTROL BOARD

On

24th September, 2019

Online Continuous Monitoring System for Effluents

• CPCB issued directions under section 18(1) b of the Water

and Air Acts to the SPCB & PCC for directing all the 17 categories of highly polluting industries along with Bio Medical Waste Incinerators and Hazardous Waste Incinerators for installation of online effluent quality & continuous monitoring systems to help track the discharges of pollutants from these units.

• Direction were also for installation of Real Time Water

Quality Monitoring System to monitor parameters such as pH, TSS, COD, BOD, Chromium, Arsenic, Ammonia, etc.

Goals of Online environmental monitoring system

• Improved

control

• ver

impacts

• n

the environment

• Higher environmental awareness
• Increased

management responsibility for regulatory compliance

• Self Monitoring mechanism within the industries
• Increased

cost-effectiveness (minimize inspection)

• Increased public access to information(Public

Domain)

Merits of Online Monitoring Techniques

• Online monitoring systems provide continuous

measurement of data for long periods of time, at the monitoring site of interest.

• All the major steps in traditional analysis like

sample collection, preservation, transportation, sample pre-treatment, calibration, reagent addition and sample analysis procedures are usually automated in on-line analyzers.

PARAMETER SPECIFIC EFFLUENT STANDARD: ONLINE

Industries/Facilities Discharge Parameters

Aluminum pH, BOD, COD, TSS, Flow Cement Plant Nil Integrated Iron & Steel Plants pH, Phenol, Cyanide Oil Refinery pH, BOD, COD, TSS, Flow Petrochemical pH, BOD, COD, TSS, Flow Power Plant pH, TSS, Temperature Zinc pH, TSS, Flow Copper pH, TSS, Flow Pesticides pH, BOD, COD, TSS, Chromium, Arsenic, Flow Pulp & Paper pH, BOD, COD, AOx, TSS, Mass Flow, Flow Dairy (GPI) pH, BOD, COD, TSS, Flow Distillery pH, BOD, COD, TSS, Flow Chlor Alkali pH, TSS Fertilizer pH, Ammonical nitrogen, TSS, Fluoride, Flow

Refer : http://jsac.jharkhand.gov.in/pollution/ refer : Revised Guidelines

Techniques/ Instrumentation for

• nline measurement
• 1. Online Analyzers- In most cases online

measurements are based on automated laboratory based measurement techniques .

• 2. In line Analyzers - Inline analyzers are

simpler in design and can measure directly in the process line, using a probe that is chemically insensitive .

Available Technologies

• Photometric Optical Technology: Photometric
• ptical sensors are among the most commonly

used measurement principles for online analysers

• 1. Colorimetric
• 2. UV Absorption
• 3. UV Vis Absorption Spectroscopy
• Total Organic Carbon (TOC) Based Technology
• Nephelometric Technology
• Flow Meters

refer : Revised Guidelines

Issues with real time monitoring system

• Non reliable data/unavailability of data due to lack
• f maintenance or non-optimal operation of real

time monitoring system

• Lack
• f

contribution and mutual cooperation between industries and vendors. Problem mitigation:

• Appointment of concerned authority by the industry

with responsibility to maintain and operate the system

• Mutual cooperation from the vendor/ instrument

supplier

Clear specification

• f

roles and responsibilities

Site selection

• Online RTEQMS submersible In-situ sensors.
• System with flow cell or extraction.
• CCTV camera has to be installed by all units

at the discharging effluent points.

Instrument Calibration

The following frequency has to be used for calibration of

• analyzer. The calibration can be done in the laboratory of

the industry and data should be submitted online to CPCB.

• pH – once every week or as specified by manufacturer

whichever is earlier 1. The industry chemist shall perform multi point calibration

• f pH meter using standard pH buffer with9.2, 4.0 and 7.0
• r as provided pH solutions by the instrument supplier.

2. The pH values have to be reported at 25 °C. 3. pH buffers have to be used to calculate a running variance of the measurements.

• Temperature (pH Meter correction) – validation is to be

performed against traceable calibrated thermometer, once every month and data submitted online to CPCB.

WAYS TO DEAL WITH EXCESSES DISCHARGE

• Average discharge for initial 30 minutes shall

not be considered during the plant start-up or batch process.

• Values

recorded during calibration/ preventive maintenance shall not be considered for Exceedance.

• Incase of Exceedance value, SPCB may issue

Show Cause notice, requiring immediate feedback on corrective action.

WAYS TO DEAL WITH EXCESSES DISCHARGE

• If, the discharge quality continuously exceeds

the prescribed norms by 10% of standard and for duration of 1 hour then

• 1. Industry shall immediately inform the SPCB

about the control measures initiated by them.

• 2. Incase of failure, closer of its operation.

ACTION TAKEN BY JSPCB

• Minimum 85% OCEMS data @ 15 minutes

interval shall be transmitted to JSPCB

• therwise JSPCB may issue Show Cause

notice, requiring immediate feedback

• n

corrective action.

• Environmental

Compensation shall be implied on the industries by JSPCB if they fail to take stringent actions for the compliance of faulty data/irregularity of data within period of 1 month.

ACTION FRAMEWORK BY JSPCB

Action Period of

• bservation

(No. of Weeks = X) Criteria Based

• n Data

Performance

JPSCB will send - Show Cause letter to the client 1 Week Industry is one of 5 with lowest positive data availability and mean data availability is < 85% OR Industry has zero data availability for at-least X weeks in the past 4 weeks JSPCB will send another Show Cause letter to client and meets the client & CEMS vendor 2 Week JSPCB will send the Show Cause letter for the third time and conduct a site visit and verify the stack sample 2 Week JSPCB Officials may issue Closure and Environmental Compensation shall be imposed. 4 Week

Thank you

Mail:ranchijspcb@gmail.com

• Ph. No. - 0651-2400850/ 1/ 2