JPS5665677A - Wet treatment of denitration and desulfurization waste liquid - Google Patents

Wet treatment of denitration and desulfurization waste liquid

Info

Publication number
JPS5665677A
JPS5665677A JP14108079A JP14108079A JPS5665677A JP S5665677 A JPS5665677 A JP S5665677A JP 14108079 A JP14108079 A JP 14108079A JP 14108079 A JP14108079 A JP 14108079A JP S5665677 A JPS5665677 A JP S5665677A
Authority
JP
Japan
Prior art keywords
waste liquid
precipitate
amine type
type nitrogen
inorg
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
JP14108079A
Other languages
Japanese (ja)
Other versions
JPS595035B2 (en
Inventor
Koichi Shigeta
Yoshio Hamao
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.)
IHI Corp
Original Assignee
IHI Corp
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 IHI Corp filed Critical IHI Corp
Priority to JP54141080A priority Critical patent/JPS595035B2/en
Publication of JPS5665677A publication Critical patent/JPS5665677A/en
Publication of JPS595035B2 publication Critical patent/JPS595035B2/en
Expired legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

PURPOSE: To make waste water disposable by a method wherein waste liquid is filtered after alkali treatment and an inorg. coagulating agent containing Al ion to the filtrate to coagulate and precipitate amine type nitrogen compound ions at a specific pH or more.
CONSTITUTION: Raw waste liquid is received in a step 2 and SS is precipitated naturally as well as maintaining the pH of the waste liquid at about neutral point by Ca(OH)2 to precipitate Fe3+ or Cr3+. A pH of a supernatant liquid in the step 2 is moreover raised in a step 3 to precipitate almost all metal ions and SO4 2-. Subsequently, in a step 4 for coagulating and precipitating amine type nitrogen compound ions, an inorg. coagulating agent containing Al ion is added to the treated waste liquid of the step 3 and, moreover, an alkaline agent is added to raise the pH to 10 or more to remove a considerable portion of amine type nitrogen compounds and fluorine. In this case, S2O6 2- is also removed efficiently. The precipitate is subjected to heat treatment to be made disposable. The waste liquid of the step 4 is neutralized and filtered and, after COD is adjusted, discharged.
COPYRIGHT: (C)1981,JPO&Japio
JP54141080A 1979-10-31 1979-10-31 Treatment method for wet denitrification and desulfurization waste liquid Expired JPS595035B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54141080A JPS595035B2 (en) 1979-10-31 1979-10-31 Treatment method for wet denitrification and desulfurization waste liquid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54141080A JPS595035B2 (en) 1979-10-31 1979-10-31 Treatment method for wet denitrification and desulfurization waste liquid

Publications (2)

Publication Number Publication Date
JPS5665677A true JPS5665677A (en) 1981-06-03
JPS595035B2 JPS595035B2 (en) 1984-02-02

Family

ID=15283739

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54141080A Expired JPS595035B2 (en) 1979-10-31 1979-10-31 Treatment method for wet denitrification and desulfurization waste liquid

Country Status (1)

Country Link
JP (1) JPS595035B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59134885A (en) * 1983-01-20 1984-08-02 Matsushita Electric Ind Co Ltd Laser device
US5388171A (en) * 1992-10-30 1995-02-07 Sumitomo Electric Industries, Ltd. Semiconductor laser module

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59134885A (en) * 1983-01-20 1984-08-02 Matsushita Electric Ind Co Ltd Laser device
US5388171A (en) * 1992-10-30 1995-02-07 Sumitomo Electric Industries, Ltd. Semiconductor laser module

Also Published As

Publication number Publication date
JPS595035B2 (en) 1984-02-02

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