Regulation on Industrial Regulation on Industrial Discharge to Public Discharge to Public SewerSewer

Kinji YAMADAKinji YAMADAJSWAJSWA

ObjectiveObjective• Protection of structural integrity &

drainage performance of public sewer

• Permit compliance of effluent from WWTP to Water Pollution Control Law

Demarcation of regulationDemarcation of regulation

Factory

WWTP.

Sewer(ex, chemical effect)

Responsibility of wastewater utility

Effluent(ex, negative impact)

RegulatesRegulates forfor factoriesfactoriesWater pollution control law and

Sewage law

　 1.Notification

　 2.Pretreatment to meet discharge permit to sewer

RegulatesRegulates forfor factoriesfactoriesNotification Type of designated factories Installation of pretreatment Water quality control administrator Emergency Reporting

TypesTypes ofof designateddesignated factoriesfactories

Designation in WPCL　 mining, livestock, drink food production laundry, paper industry, fertilizer manufacture　 organic-chemical industry, petrochemical-

industry, leather business, metal working industry, plating industry

　 WTP, WWTP, Solid waste disposal 　

Registration as designated factories

Registration by pretreatment

Designatedfactories

Undesignatedfactories

NotificationsNotifications

Discharge permit to public sewerDischarge 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 permit42 Quality parameters for permit

Classification Substance

Heavy metals Cd 　 Pb 　 As 　 Hg 　 Cr 　 Cu 　 Zn　 Fe, etc

Organics DXN 　 PCB 　 TCE 　 PCE, etc

Inorganics CN 　 F 　 B, etc

general BOD 　 n-hex 　 SS 　 N 　 P 　 pH 　Temp, etc

Monitoring and supervisionMonitoring and supervision

• Among registered factories, inspection priority is given to factories using harmful substances.

• If violation found, instruction given for correction

Record of Monitoring & Record of Monitoring & Supervision in Tokyo, 2011Supervision in Tokyo, 2011

Notification 8,770

Inspection 5,982

Sampling 2,985

Warning letters 387

Certificated water quality control Certificated water quality control administratoradministrator

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 info@gcus.jp