Regulation on Industrial Discharge to Public Sewer

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Regulation on Industrial Discharge to Public
Sewer
Kinji YAMADA JSWA
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Objective

• Protection of structural integrity drainage
  performance of public sewer
• Permit compliance of effluent from WWTP to Water
  Pollution Control Law

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Demarcation of regulation
Factory
Responsibility of wastewater utility
Sewer (ex, chemical effect)
WWTP.
Effluent (ex, negative impact)
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Regulates for factories

• Water pollution control law and Sewage law
• 1.Notification
• 2.Pretreatment to meet discharge permit to sewer

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Regulates for factories

• Notification
• Type of designated factories
• Installation of pretreatment
• Water quality control administrator
• Emergency Reporting

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Types of designated factories

• 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

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Notifications
Designated factories
Registration as designated factories
Undesignated factories
Registration by pretreatment
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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.

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42 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
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Monitoring and supervision

• Among registered factories, inspection priority
  is given to factories using harmful substances.
• If violation found, instruction given for
  correction

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Record of Monitoring Supervision in Tokyo, 2011
Notification 8,770
Inspection 5,982
Sampling 2,985
Warning letters 387
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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

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Afterword

• This presentation was made to visitors from St.
  Petersburg.
• The content is based on the authors work
  experience at Tokyo Metropolitan Gov. and its
  publication.
• For more information, email info_at_gcus.jp