JPS5628694A - Treatment of water containing phosphate and suspended solid - Google Patents

Treatment of water containing phosphate and suspended solid

Info

Publication number
JPS5628694A
JPS5628694A JP10452479A JP10452479A JPS5628694A JP S5628694 A JPS5628694 A JP S5628694A JP 10452479 A JP10452479 A JP 10452479A JP 10452479 A JP10452479 A JP 10452479A JP S5628694 A JPS5628694 A JP S5628694A
Authority
JP
Japan
Prior art keywords
water
phosphate
contg
seed crystal
suspended solids
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.)
Granted
Application number
JP10452479A
Other languages
Japanese (ja)
Other versions
JPS637838B2 (en
Inventor
Isao Joko
Motomu Koizumi
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.)
Kurita Water Industries Ltd
Original Assignee
Kurita Water Industries Ltd
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 Kurita Water Industries Ltd filed Critical Kurita Water Industries Ltd
Priority to JP10452479A priority Critical patent/JPS5628694A/en
Publication of JPS5628694A publication Critical patent/JPS5628694A/en
Publication of JPS637838B2 publication Critical patent/JPS637838B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Removal Of Specific Substances (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

PURPOSE: To efficiently remove suspended solids in raw water and crystallize phosphate in the water by passing the water through a calcium phosphate-contg. granular filter medium in the presence of Ca ions and allowing the filtered water to contact to a Ca agent.
CONSTITUTION: To water contg. phosphate and suspended solids such as secondarily treated sewage are added Ca ions such as an aqueous calcium chloride soln., and the water is passed through a bed packed with a granular filter medium made of calcium phosphate-contg. seed crystal such as hydroxyapatite. The filtered water is pH adjusted with a Ca agent such as calcium chloride or an alkali agent such as sodium hydroxide, and then the water is passed through a calcium phosphate- contg. seed crystal packed layer again. Thus, the phosphate in the water is crystallized by contact to the seed crystal. By this method the phosphate causng eutrophication can be removed with high efficiency together with the suspended solids.
COPYRIGHT: (C)1981,JPO&Japio
JP10452479A 1979-08-18 1979-08-18 Treatment of water containing phosphate and suspended solid Granted JPS5628694A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10452479A JPS5628694A (en) 1979-08-18 1979-08-18 Treatment of water containing phosphate and suspended solid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10452479A JPS5628694A (en) 1979-08-18 1979-08-18 Treatment of water containing phosphate and suspended solid

Publications (2)

Publication Number Publication Date
JPS5628694A true JPS5628694A (en) 1981-03-20
JPS637838B2 JPS637838B2 (en) 1988-02-18

Family

ID=14382872

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10452479A Granted JPS5628694A (en) 1979-08-18 1979-08-18 Treatment of water containing phosphate and suspended solid

Country Status (1)

Country Link
JP (1) JPS5628694A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61157392A (en) * 1984-12-28 1986-07-17 Ebara Infilco Co Ltd Removal of phosphorus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61157392A (en) * 1984-12-28 1986-07-17 Ebara Infilco Co Ltd Removal of phosphorus

Also Published As

Publication number Publication date
JPS637838B2 (en) 1988-02-18

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