CN201347394Y - Preprocessing apparatus of cold-rolled silicon steel chromium-free coating layer waste liquid - Google Patents
Preprocessing apparatus of cold-rolled silicon steel chromium-free coating layer waste liquid Download PDFInfo
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- CN201347394Y CN201347394Y CNU2008202411499U CN200820241149U CN201347394Y CN 201347394 Y CN201347394 Y CN 201347394Y CN U2008202411499 U CNU2008202411499 U CN U2008202411499U CN 200820241149 U CN200820241149 U CN 200820241149U CN 201347394 Y CN201347394 Y CN 201347394Y
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- waste liquid
- transfer lime
- conveying pipe
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- silicon steel
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Abstract
The utility model relates to a processing apparatus of cold-rolled silicon steel chromium-free coating layer waste liquid. The preprocessing apparatus of cold-rolled silicon steel chromium-free coating layer waste liquid is characterized by comprising a waste liquid regulating pool, a first stirrer, a first conveying pip, a pump, a decomposition case, a second stirrer, a second conveying pipe, a first valve, a third conveying pipe, a second valve and a sludge tank; an input port of the first conveying pipe is communicated with the bottom of the waste liquid regulating pool, an output port of the first conveying pipe is communicated with an input port of the decomposition case; an input port of the second conveying pipe is communicated with the lower part of the decomposition case, an input port of the third conveying pipe is communicated with the bottom of the decomposition case, an output port of the third conveying pipe is communicated with an input port of the sludge tank, the third conveying pipe is equipped with the second valve. Adopting the simple structure, the apparatus can preprocess the chromium-free coating layer waste liquid, reduces the CCD, and eliminates the white color, the receivable degree of the diluted alkaline waste water processing system can be reached, and the normal operating of the waste water processing system can be ensured.
Description
Technical field
The utility model belongs to the iron and steel technical field, is specifically related to a kind of treatment unit of cold-rolled silicon steel chromium-free coat waste liquid.
Background technology
Iron and steel enterprise's cold rolled silicon steel is handled line, and the coating liquid traditional technology of belt steel surface adopts chromyl coating liquid, produces chromate waste water.Chromate waste water adopts reduction, neutralization, sedimentation processing technology.
In order to reduce the pollution problem of chromate waste water, the coating liquid that cold rolled silicon steel is handled line adopts chromium free paint, the waste water COD of its generation
CrHeight is white liquid (being the cold-rolled silicon steel chromium-free coat waste liquid), and existing waste water treatment process and device can't adapt to, and environment is caused new pollution.
Summary of the invention
The purpose of this utility model is to provide a kind of pretreatment unit of cold-rolled silicon steel chromium-free coat waste liquid simple in structure.
To achieve these goals, the technical solution of the utility model is: the pretreatment unit of cold-rolled silicon steel chromium-free coat waste liquid is characterized in that it comprises waste liquid equalizing tank, first agitator, first transfer lime, pump, decomposition case, second agitator, second transfer lime, first valve, the 3rd transfer lime, second valve, sludge tank; The agitating vane of first agitator is positioned at the waste liquid equalizing tank, the transfer lime outlet of cold-rolled silicon steel chromium-free coat waste liquid communicates with the input aperture of waste liquid equalizing tank, the input aperture of first transfer lime is connected with the bottom of waste liquid equalizing tank, the delivery port of first transfer lime communicates with the input aperture of decomposing case, and first transfer lime is provided with pump; The agitating vane of second agitator is positioned at and decomposes case; The input aperture of second transfer lime is connected with the bottom of decomposing case, and the delivery port of second transfer lime communicates with diluted alkaline Waste Water Treatment or oil-contained waste water treatment system, and second transfer lime is provided with first valve; The input aperture of the 3rd transfer lime is connected with the bottom of decomposing case, and the delivery port of the 3rd transfer lime communicates with the input aperture of sludge tank, and the 3rd transfer lime is provided with second valve.
The beneficial effects of the utility model are: adopt said structure, it is simple in structure.Adopt this device, the Chrome-free coat waste liquid is carried out pre-treatment, reduce COD, eliminate white, reach diluted alkaline Waste Water Treatment acceptable degree, guaranteed the normal operation of Waste Water Treatment.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Number in the figure: 1-waste liquid equalizing tank, 2-first agitator, 3-first transfer lime, the 4-pump, 5-decomposes case, 6-second agitator, 7-second transfer lime, 8-first valve, 9-the 3rd transfer lime, 10-second valve, 11-sludge tank.
Embodiment
Further describe the utility model below in conjunction with accompanying drawing:
As shown in Figure 1, the pretreatment unit of cold-rolled silicon steel chromium-free coat waste liquid, it comprises waste liquid equalizing tank 1, first agitator (or claiming stirrer) 2, first transfer lime 3, pump 4, decomposes case 5, second agitator 6, second transfer lime 7, first valve 8, the 3rd transfer lime 9, second valve 10, sludge tank 11; The agitating vane of first agitator 2 is positioned at waste liquid equalizing tank 1, the transfer lime outlet of cold-rolled silicon steel chromium-free coat waste liquid communicates with the input aperture of waste liquid equalizing tank 1, the input aperture of first transfer lime 3 is connected with the bottom of waste liquid equalizing tank 1, the delivery port of first transfer lime 3 communicates with the input aperture of decomposing case 5, and first transfer lime 3 is provided with pump 4; The transfer lime outlet of polyacrylamide (PAM) communicates with the input aperture of decomposing case 5, and the transfer lime outlet of sulfuric acid or nitric acid communicates with the input aperture of decomposing case 5, and the agitating vane of second agitator 6 is positioned at and decomposes case 5; The input aperture of second transfer lime 7 is connected with the bottom of decomposing case 5, and the delivery port of second transfer lime 7 communicates with diluted alkaline Waste Water Treatment or oil-contained waste water treatment system, and second transfer lime 7 is provided with first valve 8; The input aperture of the 3rd transfer lime 9 is connected with the bottom of decomposing case 5, and the delivery port of the 3rd transfer lime 9 communicates with the input aperture of sludge tank 11, and the 3rd transfer lime 9 is provided with second valve 10.
Decomposing case 5 is conical structure.
The working process of pretreatment unit of the present utility model: 1) the cold-rolled silicon steel chromium-free coat waste liquid enters 2 stirrings of waste liquid equalizing tank 1, the first agitator, is conveyed into pump 4 and decomposes in the case 5.2) in decomposing case 5, add polyacrylamide (PAM), sulfuric acid (or nitric acid), the add-on of polyacrylamide: every liter of cold-rolled silicon steel chromium-free coat waste liquid adds 0.5-1.0 milligram polyacrylamide in the case 5 by decomposing, and the add-on of sulfuric acid (or nitric acid) is for regulating pH=4; Left standstill 0.5-1.0 hour, and carried out acidifying and decompose, make COD in the waste water by 5000-10000mg/l, be reduced to 2500mg/l, liquid becomes transparent color by white; Being conveyed into the diluted alkaline Waste Water Treatment by second transfer lime 7 then further handles.3) decompose case 5 interior sedimentary body refuses and flow to sludge tank 11, enter sludge system and carry out processed by the 3rd transfer lime 9.
Claims (1)
1. the pretreatment unit of cold-rolled silicon steel chromium-free coat waste liquid is characterized in that it comprises waste liquid equalizing tank (1), first agitator (2), first transfer lime (3), pump (4), decomposes case (5), second agitator (6), second transfer lime (7), first valve (8), the 3rd transfer lime (9), second valve (10), sludge tank (11); The agitating vane of first agitator (2) is positioned at waste liquid equalizing tank (1), the transfer lime outlet of cold-rolled silicon steel chromium-free coat waste liquid communicates with the input aperture of waste liquid equalizing tank (1), the input aperture of first transfer lime (3) is connected with the bottom of waste liquid equalizing tank (1), the delivery port of first transfer lime (3) communicates with the input aperture of decomposing case (5), and first transfer lime (3) is provided with pump (4); The agitating vane of second agitator (6) is positioned at and decomposes case (5); The input aperture of second transfer lime (7) is connected with the bottom of decomposing case (5), and the delivery port of second transfer lime (7) communicates with diluted alkaline Waste Water Treatment or oil-contained waste water treatment system, and second transfer lime (7) is provided with first valve (8); The input aperture of the 3rd transfer lime (9) is connected with the bottom of decomposing case (5), and the delivery port of the 3rd transfer lime (9) communicates with the input aperture of sludge tank (11), and the 3rd transfer lime (9) is provided with second valve (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202411499U CN201347394Y (en) | 2008-12-30 | 2008-12-30 | Preprocessing apparatus of cold-rolled silicon steel chromium-free coating layer waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202411499U CN201347394Y (en) | 2008-12-30 | 2008-12-30 | Preprocessing apparatus of cold-rolled silicon steel chromium-free coating layer waste liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201347394Y true CN201347394Y (en) | 2009-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202411499U Expired - Lifetime CN201347394Y (en) | 2008-12-30 | 2008-12-30 | Preprocessing apparatus of cold-rolled silicon steel chromium-free coating layer waste liquid |
Country Status (1)
| Country | Link |
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| CN (1) | CN201347394Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781009A (en) * | 2010-03-05 | 2010-07-21 | 上海宝钢工程技术有限公司 | Method for pretreating cold-rolled silicon steel coating effluent |
| CN101786714A (en) * | 2010-03-05 | 2010-07-28 | 上海宝钢工程技术有限公司 | Pretreatment system for cold rolled silicon steel coating waste liquid |
| CN101811789A (en) * | 2010-03-05 | 2010-08-25 | 宝钢工程技术集团有限公司 | Pretreatment system for cold-rolled silicon steel coat waste liquor |
| CN101921028A (en) * | 2010-08-25 | 2010-12-22 | 常州大学 | Method for treating liquid waste of silicon steel passivation solution |
-
2008
- 2008-12-30 CN CNU2008202411499U patent/CN201347394Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781009A (en) * | 2010-03-05 | 2010-07-21 | 上海宝钢工程技术有限公司 | Method for pretreating cold-rolled silicon steel coating effluent |
| CN101786714A (en) * | 2010-03-05 | 2010-07-28 | 上海宝钢工程技术有限公司 | Pretreatment system for cold rolled silicon steel coating waste liquid |
| CN101811789A (en) * | 2010-03-05 | 2010-08-25 | 宝钢工程技术集团有限公司 | Pretreatment system for cold-rolled silicon steel coat waste liquor |
| CN101811789B (en) * | 2010-03-05 | 2013-01-02 | 宝钢工程技术集团有限公司 | Pretreatment system for cold-rolled silicon steel coat waste liquor |
| CN101921028A (en) * | 2010-08-25 | 2010-12-22 | 常州大学 | Method for treating liquid waste of silicon steel passivation solution |
| CN101921028B (en) * | 2010-08-25 | 2011-12-28 | 常州大学 | Method for treating liquid waste of silicon steel passivation solution |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091118 |
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| CX01 | Expiry of patent term |