Regulation on Industrial Discharge to Public Sewer Kinji YAMADA JSWA Objective • Protection of structural integrity & drainage performance of public sewer • Permit compliance of effluent from WWTP to Water Pollution Control Law Demarcation of regulation Factory Responsibility of wastewater utility Sewer (ex, chemical effect) WWTP. Effluent (ex, negative impact) Regulates for factories Water pollution control law and Sewage law 1.Notification 2.Pretreatment to meet discharge permit to sewer Regulates for factories Notification Type of designated factories Installation of pretreatment Water quality control administrator Emergency Reporting Types of designated factories Designation in WPCL mining, livestock, drink food production laundry, paper industry, fertilizer manufacture organic-chemical industry, petrochemicalindustry, leather business, metal working industry, plating industry WTP, WWTP, Solid waste disposal Notifications Designated factories Registration as designated factories Undesignated factories Registration by pretreatment Discharge permit to public sewer • Discharge quality need to comply to permit stimulated by sewage law and local ordinance • If violation is expected, installation of pretreatment facility mandatory at factories • If violations are found, warning letters are issued before penalty. 42 Quality parameters for permit Classification Substance Heavy metals Cd Pb As Hg Cr Cu Zn Fe, etc Organics Inorganics general DXN PCB TCE PCE, etc CN F B, etc BOD n-hex SS N P pH Temp, etc Monitoring and supervision • Among registered factories, inspection priority is given to factories using harmful substances. • If violation found, instruction given for correction Record of Monitoring & Supervision in Tokyo, 2011 Notification 8,770 Inspection 5,982 Sampling 2,985 Warning letters 387 Certificated water quality control administrator Improve self-control of factories Awareness Technology Leading to better factory discharge quality Certification by seminar attendance Nationally certification pollution control administrator Afterword • This presentation was made to visitors from St. Petersburg. • The content is based on the author’s work experience at Tokyo Metropolitan Gov. and its publication. • For more information, email [email protected]
© Copyright 2024 ExpyDoc
