ONLINE CONTINUOUS EFFLUENT MONITORING SYSTEM A Presentation by JHARKHAND STATE POLLUTION CONTROL BOARD On 24 th September, 2019 1
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 over impacts on 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 pH, BOD, COD, TSS, Chromium, Pesticides Arsenic, Flow pH, BOD, COD, AOx, TSS, Mass Pulp & Paper Flow, Flow Dairy (GPI) pH, BOD, COD, TSS, Flow Distillery pH, BOD, COD, TSS, Flow Chlor Alkali pH, TSS pH, Ammonical nitrogen, TSS, Fertilizer Fluoride, Flow Refer : http://jsac.jharkhand.gov.in/pollution/ refer : Revised Guidelines
Techniques/ Instrumentation for online 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 optical 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 • of maintenance or non-optimal operation of real time monitoring system • Lack of 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 Clear specification of roles and supplier 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 of pH meter using standard pH buffer with9.2, 4.0 and 7.0 or 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 otherwise JSPCB may issue Show Cause notice, requiring immediate feedback on 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 Period of Criteria Based observation Action on Data (No. of Weeks = Performance X) JPSCB will send - Show Cause 1 Week Industry is one of 5 letter to the client with lowest positive JSPCB will send another Show data availability and Cause letter to client and meets 2 Week mean data the client & CEMS vendor availability is < 85% JSPCB will send the Show Cause OR letter for the third time and 2 Week conduct a site visit and verify the Industry has zero stack sample data availability for JSPCB Officials may issue at-least X weeks in Closure and Environmental 4 Week the past 4 weeks Compensation shall be imposed.
Thank you Mail:ranchijspcb@gmail.com Ph. No. - 0651-2400850/ 1/ 2
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