JPS5794383A - Treatment of incineration ash - Google Patents
Treatment of incineration ashInfo
- Publication number
- JPS5794383A JPS5794383A JP55170227A JP17022780A JPS5794383A JP S5794383 A JPS5794383 A JP S5794383A JP 55170227 A JP55170227 A JP 55170227A JP 17022780 A JP17022780 A JP 17022780A JP S5794383 A JPS5794383 A JP S5794383A
- Authority
- JP
- Japan
- Prior art keywords
- heavy metals
- line
- incineration
- incineration ashes
- hydrosulfide
- 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
Links
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
PURPOSE: To insolubilize heavy metals, particularly arsenic, by adding mineral acids of 1W2pH to incineration ashes contg. heavy metals, dissolving heavy metals, adding hydrosulfide to the soln. thereof to control pH to 7W8 and allowing the heavy metals to settle as sulfide.
CONSTITUTION: The incineration ashes produced by incineration of waste such as sludge are introduced from a hopper 1 through a line 11 into an acid extracting tower 2. Here, mineral acids such as hydrochloric acid, nitric acid and the like of 1W2pH introduced through a line 12 from a mineral acid tank 3 are added thereto to dissolve and extract heavy metals. The heavy metal extracting liquid and the incineration ashes are fed through a line 13 into a reaction vessel 4, where hydrosulfide such as sodium hydrosulfide is added from a chemicals tank 5 through a line 14, to control pH to 7W8 and to allow heavy metals to settle as sulfide. Thence, the mixed solns. are supplied to a dehydrator 6, where they are separated to the insolubilized incineration ashes and the dehydrated filtrate. The nontoxic incineration ashes are recovered into a hopper 8.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55170227A JPS607948B2 (en) | 1980-12-04 | 1980-12-04 | How to dispose of incinerated ash |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55170227A JPS607948B2 (en) | 1980-12-04 | 1980-12-04 | How to dispose of incinerated ash |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5794383A true JPS5794383A (en) | 1982-06-11 |
JPS607948B2 JPS607948B2 (en) | 1985-02-28 |
Family
ID=15901016
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55170227A Expired JPS607948B2 (en) | 1980-12-04 | 1980-12-04 | How to dispose of incinerated ash |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS607948B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH681810A5 (en) * | 1990-10-22 | 1993-05-28 | Von Roll Ag | |
JPH08318255A (en) * | 1995-05-25 | 1996-12-03 | Techno Frontier:Kk | Reutilization treatment of main ash of stoker type incinerator |
WO2006024691A1 (en) * | 2004-08-31 | 2006-03-09 | Outokumpu Technology Oy | Method for treating iron residue |
JP4778113B1 (en) * | 2010-12-27 | 2011-09-21 | 株式会社末松電子製作所 | Electric fence and control method thereof, electric fence power supply device and electric fence control circuit |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61244462A (en) * | 1985-04-20 | 1986-10-30 | Sanyo Kiko Kk | Grinding head |
JPH0411000Y2 (en) * | 1985-07-25 | 1992-03-18 |
-
1980
- 1980-12-04 JP JP55170227A patent/JPS607948B2/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5512257A (en) * | 1990-01-22 | 1996-04-30 | Von Roll Umwelttechnik Ag | Process for the treatment of flue particulates |
CH681810A5 (en) * | 1990-10-22 | 1993-05-28 | Von Roll Ag | |
JPH08318255A (en) * | 1995-05-25 | 1996-12-03 | Techno Frontier:Kk | Reutilization treatment of main ash of stoker type incinerator |
WO2006024691A1 (en) * | 2004-08-31 | 2006-03-09 | Outokumpu Technology Oy | Method for treating iron residue |
JP4778113B1 (en) * | 2010-12-27 | 2011-09-21 | 株式会社末松電子製作所 | Electric fence and control method thereof, electric fence power supply device and electric fence control circuit |
Also Published As
Publication number | Publication date |
---|---|
JPS607948B2 (en) | 1985-02-28 |
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