JPS5765381A - Water purifier - Google Patents

Water purifier

Info

Publication number
JPS5765381A
JPS5765381A JP14106780A JP14106780A JPS5765381A JP S5765381 A JPS5765381 A JP S5765381A JP 14106780 A JP14106780 A JP 14106780A JP 14106780 A JP14106780 A JP 14106780A JP S5765381 A JPS5765381 A JP S5765381A
Authority
JP
Japan
Prior art keywords
water
waste
agent
polysaccharide
polyvinyl alcohol
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
JP14106780A
Other languages
Japanese (ja)
Inventor
Shoichiro Yokoyama
Yoshimasa Igari
Kazuo Saito
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.)
Kunimine Industries Co Ltd
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
Kunimine Industries Co 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 Agency of Industrial Science and Technology, Kunimine Industries Co Ltd filed Critical Agency of Industrial Science and Technology
Priority to JP14106780A priority Critical patent/JPS5765381A/en
Publication of JPS5765381A publication Critical patent/JPS5765381A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To enhance clarification effect of waste water, when waste water containing polyvinyl alcohol or polysaccharide is clarified, by using CaO or Ca(OH)2 and NaAlO2 as purifiers.
CONSTITUTION: An agent A, comprising powdery or slurry CaO or Ca(OH)2, and an agent B, comprising NaAlO2 in a powdery or water solution state, are added as purifiers to waste water containing polyvinyl alcohol or polysaccharide such as starch, e.g., waste desizing water in the textile industry, waste surface-sizing water or waste used paper water in the paper industry or waste domestic cheaning water, under the condition of pH 4W10. The ratio of the agent A is 0.5W10 as Ca(OH)2 by one of the agent B. The addition amount of the agent A is 200ppm or more as Ca(OH)2, while that of the agent B is 200W2,000ppm as Al2O3. Owing to these additives, the polyvinyl alcohol or polysaccharide is coagulated and flocculated. The resultant flocks are separated from the water by precipitation or flotation.
COPYRIGHT: (C)1982,JPO&Japio
JP14106780A 1980-10-08 1980-10-08 Water purifier Pending JPS5765381A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14106780A JPS5765381A (en) 1980-10-08 1980-10-08 Water purifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14106780A JPS5765381A (en) 1980-10-08 1980-10-08 Water purifier

Publications (1)

Publication Number Publication Date
JPS5765381A true JPS5765381A (en) 1982-04-20

Family

ID=15283465

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14106780A Pending JPS5765381A (en) 1980-10-08 1980-10-08 Water purifier

Country Status (1)

Country Link
JP (1) JPS5765381A (en)

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