JPS5513103A - Treatment of sewage - Google Patents

Treatment of sewage

Info

Publication number
JPS5513103A
JPS5513103A JP8199278A JP8199278A JPS5513103A JP S5513103 A JPS5513103 A JP S5513103A JP 8199278 A JP8199278 A JP 8199278A JP 8199278 A JP8199278 A JP 8199278A JP S5513103 A JPS5513103 A JP S5513103A
Authority
JP
Japan
Prior art keywords
membrane
sewage
passed
suspended solids
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8199278A
Other languages
Japanese (ja)
Inventor
Toyoyasu Saida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP8199278A priority Critical patent/JPS5513103A/en
Publication of JPS5513103A publication Critical patent/JPS5513103A/en
Pending legal-status Critical Current

Links

Landscapes

  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

PURPOSE: To recycle as medium class supply water purifying sewage deprived of suspended solids of a size exceeding a certain solid size by means of a UF membrane separation.
CONSTITUTION: A comparatively less polluted sewage among waste waters is collected through another waste water system, and then suspended solids of not less than 50 μm sizes are removed from the sewage by a micro strainer, etc. Then, the sewage thus treated is passed through a membrane separator using a cleaning chemical-resistant membrane of a plastic, etc., for purification, and the treated water which passed through the membrane is utilized as medium class supply water in washing flash toilet, watering gardens, etc., and also the concentrated sewage is discharged to the usual sewer. Also, when the filtering speed of the membrane is lowered by pollutions, a cleaning water containing 0.05 to 1.5%, preferably 0.2 to 1%, a caustic alkali, e.g., caustic soda, etc., together, as needed, with a similar amount of ethylenediamine tetracetate is used to clean the membrane at 5 to 80°C.
COPYRIGHT: (C)1980,JPO&Japio
JP8199278A 1978-07-07 1978-07-07 Treatment of sewage Pending JPS5513103A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8199278A JPS5513103A (en) 1978-07-07 1978-07-07 Treatment of sewage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8199278A JPS5513103A (en) 1978-07-07 1978-07-07 Treatment of sewage

Publications (1)

Publication Number Publication Date
JPS5513103A true JPS5513103A (en) 1980-01-30

Family

ID=13761963

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8199278A Pending JPS5513103A (en) 1978-07-07 1978-07-07 Treatment of sewage

Country Status (1)

Country Link
JP (1) JPS5513103A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5990688A (en) * 1982-11-15 1984-05-25 Arubatsuku Service Kk Device and method for treating silica-containing water
JP2007524501A (en) * 2003-06-24 2007-08-30 カロロ エンジニアーズ， ピー・シー Wastewater treatment method and wastewater treatment system
CN109399834A (en) * 2018-12-20 2019-03-01 上海振世能源科技有限公司 A kind of steel rolling pickling waste waters recycling treatment system and its method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5990688A (en) * 1982-11-15 1984-05-25 Arubatsuku Service Kk Device and method for treating silica-containing water
JP2007524501A (en) * 2003-06-24 2007-08-30 カロロ エンジニアーズ， ピー・シー Wastewater treatment method and wastewater treatment system
CN109399834A (en) * 2018-12-20 2019-03-01 上海振世能源科技有限公司 A kind of steel rolling pickling waste waters recycling treatment system and its method

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