CN101811789B - Pretreatment system for cold-rolled silicon steel coat waste liquor - Google Patents
Pretreatment system for cold-rolled silicon steel coat waste liquor Download PDFInfo
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- CN101811789B CN101811789B CN 201010117992 CN201010117992A CN101811789B CN 101811789 B CN101811789 B CN 101811789B CN 201010117992 CN201010117992 CN 201010117992 CN 201010117992 A CN201010117992 A CN 201010117992A CN 101811789 B CN101811789 B CN 101811789B
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Abstract
The invention relates to a pretreatment system for cold-rolled silicon steel coat waste liquor, which comprises a unit waste water pit, a waste water pit, a pH value adjusting device, a mixed reaction settling tank, a flocculating agent preparation storage tank and a centrifugal dehydrator. The unit waste water pit is connected to the upper part of the mixed reaction settling tank through the pH value adjusting device. The bottom of the flocculating agent preparation storage tank is connected with the upper part of the mixed reaction settling tank. The inlet of the centrifugal dehydrator is connected with the bottom of the mixed reaction settling tank, and the outlet of the centrifugal dehydrator is connected with the waste water pit. A stirrer is arranged in the mixed reaction settling tank, the flocculating agent preparation storage tank and the waste water pit respectively. The system of the invention effectively overcomes blockage of pipelines and water treatment equipment because the coat waste water contains organic resin, improves the running safety, stability and reliability of a water treatment system, and reduces the daily operation and maintenance costs. The pretreatment system has the advantages of low disposable investment, stable treatment effect, low production cost, simple and convenient operation and the like.
Description
Technical field
The present invention relates to the Industrial Wastewater Treatment field, be specifically related to the pretreatment system of a kind of cold-rolled silicon steel coat waste liquid or waste water.
Background technology
Cold-rolled silicon steel coat waste water refers to: cold rolled silicon steel is for making silicon steel reach the insulation purpose, and utilize organic coating to be coated on the waste water that produces in the belt steel surface process, major ingredient in this waste water is all kinds of organic resins and other additives, and it is acid that the pH value of waste water is.For this type of waste water, the conventional processing system brings it into overall waste water processing station to process.
Contain a certain amount of organic resin in this type of waste water, in pipe conveying procedure and in the waste water disposal facility, a large amount of resins is separated out and is adhered to tube wall and water treating equipment, has a strong impact on normal production run.For avoiding the generation of this situation, in actual production, need in coating waste water, to convert and join a large amount of cleaning water and dilute, although this has alleviated the obstruction of pipeline and water treating equipment to a certain extent, increased the load of water treatment station, cause a large amount of new water to be consumed, wasted the energy.
In view of this, seek a kind of pretreatment system of Simple And Practical, make coating waste water produce point first through preliminary treatment, and then send waste water station that principal pollutant are further degraded, become pursuing a goal of these those skilled in the art.
Summary of the invention
The purpose of this invention is to provide a kind of pretreatment system for cold-rolled silicon steel coat waste liquor, it has solved the existing problem of above-mentioned prior art, processes preliminary coating waste water to reach, and reduces the purpose to tube wall and water treating equipment adhesion.
Technical solution of the present invention is as follows:
A kind of pretreatment system for cold-rolled silicon steel coat waste liquor comprises unit effluent pit, effluent pit, pH value adjuster, hybrid reaction precipitation tank, flocculating agent preparation storage and centrifugal drier;
Described unit effluent pit is connected to the top of hybrid reaction precipitation tank through the pH value adjuster;
The bottom of described flocculating agent preparation storage connects the top of hybrid reaction precipitation tank;
The import of described centrifugal drier connects the bottom of hybrid reaction precipitation tank, and the outlet of centrifugal drier connects effluent pit;
One stirrer is set respectively in described hybrid reaction precipitation tank, flocculating agent preparation storage and the effluent pit.
Described pretreatment system for cold-rolled silicon steel coat waste liquor also comprises:
A productive set groove is arranged on the pipeline between unit effluent pit and the pH value adjuster;
One trench, the bottom of a productive set groove of connection;
One waste water transferpump, its two ends connect respectively unit effluent pit and a productive set groove; And
One hybrid reaction lift pump, its two ends connect respectively productive set groove and pH value adjuster.
Described pretreatment system for cold-rolled silicon steel coat waste liquor also comprises:
One stopping valve, its two ends connect respectively a hopper on service water pipeline and hybrid reaction precipitation tank top; And
One stopping valve, its two ends connect respectively service water pipeline and centrifugal drier import.
Described pretreatment system for cold-rolled silicon steel coat waste liquor also comprises:
First valving connects flocculating agent preparation storage, service water pipeline and a compressed air line;
Second valving, bottom, a compressed air line and the stopping valve of connection hybrid reaction precipitation tank; And
One sludge delivery pump, its two ends connect respectively the second valving and stopping valve.
Described pretreatment system for cold-rolled silicon steel coat waste liquor also comprises:
One ball valve, its two ends connect respectively waste water transferpump and effluent pit;
One ball valve is arranged on the pipeline between waste water transferpump and the productive set groove;
One ball valve, its two ends connect respectively productive set groove and trench;
One ball valve, its two ends connect respectively flocculating agent preparation storage and service water pipeline; And
One ball valve, its two ends connect respectively the second valving and compressed air line.
Described pretreatment system for cold-rolled silicon steel coat waste liquor also comprises: a transferpump, its two ends connect respectively bottom and a waste water processing station of effluent pit.
Described pretreatment system for cold-rolled silicon steel coat waste liquor also comprises:
One ball valve, its two ends connect respectively hybrid reaction lift pump and a groove tank car; And
One ball valve, its two ends connect respectively transferpump and waste water processing station, and transferpump also is connected with a groove tank car.
Described pretreatment system for cold-rolled silicon steel coat waste liquor also comprises:
One ball valve is arranged on the arm of connecting tube of the second valving and sludge delivery pump, and connects thief hole;
One ball valve is arranged on the arm of connecting tube of effluent pit and centrifugal drier, and connects thief hole; And
One ball valve is arranged on the arm of connecting tube of transferpump and waste water processing station.
Described pretreatment system for cold-rolled silicon steel coat waste liquor also comprises: a peristaltic pump, its two ends connect respectively flocculating agent preparation storage and hybrid reaction precipitation tank.
Described pretreatment system for cold-rolled silicon steel coat waste liquor also comprises: a pneumavalve is arranged on the service water pipeline that is connected with effluent pit.
System of the present invention can carry out pre-treatment to cold-rolled silicon steel coat waste liquid or waste water, and this system comprises the treatment step devices such as the adjustment of pH value, flocculating settling, centrifugation.
Working process of the present invention is as follows: the coating waste water that produces at first is pooled to water leg (pond), according to liquid level coating waste water is transported to the adjustment of pH value, flocculating settling tank, in this tank, finish the adjustment of pH value, Flocculation Settling Process, during the pH value is adjusted, the required lime purity that adds is more than 90%, and the processing parameter that the pH value is adjusted is: pH value 7.0～10.0; After this add again the PAM flocculant solution of 1 ‰ concentration, in above-mentioned two processes, all need stirrer to stir, so that the fully mixed reaction of coating waste water; Fully after the reaction, stirrer is out of service, makes coating waste water uniform settling in tank, behind the certain hour, automatically starts whizzer, screw-rod delivery pump, and screw-rod delivery pump is transported to the whizzer solid-liquid separation with coating waste water; Reach the liquid level of setting, close screw-rod delivery pump, and make whizzer by speed control by frequency variation, make centrifugal motor drop to 25Hz, open simultaneously the flushing with clean water valve and clean, close purge valve and whizzer after 5 minutes, such one batch processing finishes.
The present invention makes it compared with prior art owing to having adopted above technical scheme, has the following advantages and positive effect:
The invention provides a kind of pretreatment system for cold-rolled silicon steel coat waste liquor, is that treatment technology and the production system of physics, chemistry are combined closely, and realizes the mass pre-treatment to silicon-steel coating waste water.Cold-rolled silicon steel coat waste water is through the adjustment of pH value, the flocculation agent coagulant precipitation of feeding lime, the contained sediments such as organic resin carry out solid-liquid separation by whizzer in the coating waste water of sedimentation, flow automatically to effluent pit through this pretreated whizzer water outlet, further processed to waste water processing station by the hole pump delivery.System of the present invention has overcome coating waste water effectively because of the contain organic resin pipeline that causes, the obstruction of water treating equipment, has improved security and stability, the reliability of the operation of water treatment system, reduces the day-to-day operation maintenance cost.The advantages such as this pretreatment system has that one-time investment is low, treatment effect is stable, the production run cost is low and the operation operation is easy.
Description of drawings
Accompanying drawing is the schematic diagram of a kind of pretreatment system for cold-rolled silicon steel coat waste liquor of the present invention.
Reference numeral:
1 is the unit effluent pit, and 2 is the waste water transferpump, 3,4,6,8,17,18,21,27,29,30 is ball valve, 5 is a productive set groove, and 7 is trench, and 9 is the hybrid reaction lift pump, 10 is the pH value adjuster, 11 is hybrid reaction precipitation tank, 12,19 is stopping valve, and 13 is hopper, 14 is the first valving, 15 is flocculating agent preparation storage, and 16 is peristaltic pump, and 22 is the second valving, 23 is sludge delivery pump, 24 is effluent pit, and 25 is pneumavalve, and 26 is centrifugal drier, 28 is transferpump, 31,32 is the groove tank car, 33,34,35 is the service water pipeline, and 36 is compressed air line, 37,38 is thief hole, 39 is waste water processing station, and 41 is feeding lime, and 42 are mud cake outward transport processing.
Embodiment
Specifically introduce a preferred embodiment of the present invention below in conjunction with accompanying drawing.
Referring to accompanying drawing, a kind of pretreatment system for cold-rolled silicon steel coat waste liquor of the present invention is comprised of unit effluent pit 1, waste water transferpump 2, ball valve 3,4,6,8,17,18,21,27,29,30, productive set grooves 5, trench 7, hybrid reaction lift pump 9, pH value adjuster 10, hybrid reaction precipitation tank 11, stopping valve 12,19, hopper 13, the first valving 14, flocculating agent preparation storage 15, peristaltic pump 16, the second valving 22, sludge delivery pump 23, effluent pit 24, pneumavalve 25, centrifugal drier 26 and transferpumps 28.
Wherein, unit effluent pit 1 is connected to the top of hybrid reaction precipitation tank through pH value adjuster 10, and the bottom of flocculating agent preparation storage 15 also connects the top of hybrid reaction precipitation tank 11.The import of centrifugal drier 26 connects the bottom of hybrid reaction precipitation tank 11, and the outlet of centrifugal drier 26 connects effluent pit 24.Hybrid reaction precipitation tank 11, flocculating agent preparation storage 15 and the effluent pit 24 interior stirrers that arrange respectively.
Productive set groove 5 is arranged on the pipeline between unit effluent pit 1 and the pH value adjuster 10, and trench 7 connects the bottom of a productive set groove 5.The two ends of waste water transferpump 2 connect respectively unit effluent pit 1 and a productive set groove 5.The two ends of hybrid reaction lift pump 9 connect respectively productive set groove 5 and pH value adjuster 10.
The two ends of stopping valve 12 connect respectively a hopper 13 on service water pipeline 33 and hybrid reaction precipitation tank 11 tops.The two ends of stopping valve 19 connect respectively the import of service water pipeline 34 and centrifugal drier 26.
The first valving 14 is the three-way valve group, connects flocculating agent preparation storage 15, service water pipeline 33 and a compressed air line 36.The second valving 22 also is the three-way valve group, connects bottom, a compressed air line 36 and the stopping valve 19 of hybrid reaction precipitation tank 11.The two ends of sludge delivery pump 23 connect respectively the second valving 22 and stopping valve 19.
The two ends of transferpump 28 connect respectively bottom and a waste water processing station 39 of effluent pit 24.The two ends of peristaltic pump 16 connect respectively flocculating agent preparation storage 15 and hybrid reaction precipitation tank 11.
The two ends of ball valve 3 connect respectively waste water transferpump 2 and effluent pit 24.Ball valve 4 is arranged on the pipeline between waste water transferpump 2 and the productive set groove 5.The two ends of ball valve 6 connect respectively productive set groove 5 and trench 7.
The two ends of ball valve 17 connect respectively flocculating agent preparation storage 15 and service water pipeline 33.The two ends of ball valve 18 connect respectively the second valving 22 and compressed air line 36.
The two ends of ball valve 8 connect respectively hybrid reaction lift pump 9 and a groove tank car 31.The two ends of ball valve 30 connect respectively transferpump 28 and waste water processing station 39, and transferpump 28 also is connected with a groove tank car 32.
Pneumavalve 25 is arranged on the service water pipeline 35 that is connected with effluent pit 24.
In the present embodiment, the waste water that unit produces is sent into productive set groove 5 one time by waste water transferpump 2, then promote through pH value adjuster 10 by hybrid reaction lift pump 9, adjust water inlet pH value to 7.0～10.0, waste water neutralization after the pH value is adjusted flow to hybrid reaction precipitation tank 11 certainly, simultaneously add 1 ‰ PAM flocculation agent in hybrid reaction precipitation tank 11, the flocculation agent proof dry powder feeding is carried with peristaltic pump 16 after the service water dilution dissolving to flocculating agent preparation storage 15.Hybrid reaction precipitation tank 11 supernatant liquor water outlet flow by gravities are to effluent pit 24, and the effluent pit water outlet drains into waste water processing station 39 with transferpump 28.Mud is delivered to centrifugal drier 26 with sludge delivery pump 23 and is carried out solid-liquid separation, and the mud cake outward transport processes 42, and cleaner liquid is delivered to effluent pit 24 with pipeline, drains into waste water processing station 39 after converging with reaction precipitation groove 11 supernatant liquors.
Adopt the pretreatment technology of system of the present invention as follows:
(1) the pH value is regulated, and by quantitative feeding lime (number in the figure 41), waste water ph is adjusted in the suitable scope of flocculation agent;
(2) add the PAM flocculant solution of 1 ‰ concentration;
(3) realize solid-liquid separation by whizzer;
(4) water outlet is discharged into waste water station and further processes.
Data before and after the silicon-steel coating liquid waste disposal are seen following form:
| Project | The water inlet index | Effluent index |
| Organic resin | ≤1000mg/L | ≤100mg/L |
| The pH value | 5～9 | 8～9.5 |
In summary, the invention provides a kind of pretreatment system for cold-rolled silicon steel coat waste liquor, is that treatment technology and the production system of physics, chemistry are combined closely, and realizes the mass pre-treatment to silicon-steel coating waste water.Cold-rolled silicon steel coat waste water is through the adjustment of pH value, the flocculation agent coagulant precipitation of feeding lime, the contained sediments such as organic resin carry out solid-liquid separation by whizzer in the coating waste water of sedimentation, flow automatically to effluent pit through this pretreated whizzer water outlet, further processed to waste water processing station by the hole pump delivery.System of the present invention has overcome coating waste water effectively because of the contain organic resin pipeline that causes, the obstruction of water treating equipment, has improved security and stability, the reliability of the operation of water treatment system, reduces the day-to-day operation maintenance cost.The advantages such as this pretreatment system has that one-time investment is low, treatment effect is stable, the production run cost is low and the operation operation is easy.
Certainly, those skilled in the art in the art will be appreciated that, above-described embodiment only is that the present invention is described, and be not as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claim of the present invention conversion, the modification of above-described embodiment.
Claims (5)
1. pretreatment system for cold-rolled silicon steel coat waste liquor, comprise the pH value adjuster, it is characterized in that, described pretreatment system for cold-rolled silicon steel coat waste liquor also comprises unit effluent pit, effluent pit, hybrid reaction precipitation tank, flocculating agent preparation storage and centrifugal drier;
Described unit effluent pit is connected to the top of hybrid reaction precipitation tank through the pH value adjuster;
The bottom of described flocculating agent preparation storage connects the top of hybrid reaction precipitation tank;
The import of described centrifugal drier connects the bottom of hybrid reaction precipitation tank, and the outlet of centrifugal drier connects effluent pit;
One stirrer is set respectively in described hybrid reaction precipitation tank, flocculating agent preparation storage and the effluent pit;
Described pretreatment system for cold-rolled silicon steel coat waste liquor also comprises:
A productive set groove is arranged on the pipeline between unit effluent pit and the pH value adjuster;
One trench, the bottom of a productive set groove of connection;
One waste water transferpump, its two ends connect respectively unit effluent pit and a productive set groove;
One hybrid reaction lift pump, its two ends connect respectively productive set groove and pH value adjuster;
One transferpump, its two ends connect respectively bottom and a waste water processing station of effluent pit;
And a peristaltic pump, its two ends connect respectively flocculating agent preparation storage and hybrid reaction precipitation tank;
Described pretreatment system for cold-rolled silicon steel coat waste liquor also comprises:
One first stopping valve, its two ends connect respectively a hopper on the first service water pipeline and hybrid reaction precipitation tank top;
And one second stopping valve, its two ends connect respectively the second service water pipeline and centrifugal drier import;
Described pretreatment system for cold-rolled silicon steel coat waste liquor also comprises:
First valving connects flocculating agent preparation storage, the first service water pipeline and a compressed air line;
Second valving, bottom, a compressed air line and second stopping valve of connection hybrid reaction precipitation tank;
And a sludge delivery pump, its two ends connect respectively the second valving and the second stopping valve.
2. pretreatment system for cold-rolled silicon steel coat waste liquor according to claim 1 is characterized in that, also comprises:
One ball valve, its two ends connect respectively waste water transferpump and effluent pit;
One ball valve is arranged on the pipeline between waste water transferpump and the productive set groove;
One ball valve, its two ends connect respectively productive set groove and trench;
One ball valve, its two ends connect respectively flocculating agent preparation storage and the first service water pipeline; And
One ball valve, its two ends connect respectively the second valving and compressed air line.
3. pretreatment system for cold-rolled silicon steel coat waste liquor according to claim 2 is characterized in that, also comprises:
One ball valve, its two ends connect respectively hybrid reaction lift pump and one first groove tank car; And
One ball valve, its two ends connect respectively transferpump and waste water processing station, and transferpump also is connected with one second groove tank car.
4. pretreatment system for cold-rolled silicon steel coat waste liquor according to claim 3 is characterized in that, also comprises:
One ball valve is arranged on the arm of connecting tube of the second valving and sludge delivery pump, and connects the first thief hole;
One ball valve is arranged on the arm of connecting tube of effluent pit and centrifugal drier, and connects the second thief hole; And
One ball valve is arranged on the arm of connecting tube of transferpump and waste water processing station.
5. pretreatment system for cold-rolled silicon steel coat waste liquor according to claim 1 is characterized in that, also comprises: a pneumavalve is arranged on the service water pipeline that is connected with effluent pit.
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| CN 201010117992 CN101811789B (en) | 2010-03-05 | 2010-03-05 | Pretreatment system for cold-rolled silicon steel coat waste liquor |
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| CN 201010117992 CN101811789B (en) | 2010-03-05 | 2010-03-05 | Pretreatment system for cold-rolled silicon steel coat waste liquor |
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| CN101811789B true CN101811789B (en) | 2013-01-02 |
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| CN101786714B (en) * | 2010-03-05 | 2012-08-15 | 宝钢工程技术集团有限公司 | Pretreatment system for cold rolled silicon steel coating waste liquid |
| CN103880220B (en) * | 2014-04-03 | 2015-03-11 | 青岛圣合钢管制品有限公司 | Roll steel cold drawing sewage recycling system |
| CN107754389A (en) * | 2016-08-22 | 2018-03-06 | 江苏三环实业股份有限公司 | A kind of new lead plaster recycle device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1689982A (en) * | 2004-04-28 | 2005-11-02 | 宝山钢铁股份有限公司 | Technique and equipment for treating waste liquor containing high concentration chromium by microorganisms |
| CN201347394Y (en) * | 2008-12-30 | 2009-11-18 | 中冶南方工程技术有限公司 | Preprocessing apparatus of cold-rolled silicon steel chromium-free coating layer waste liquid |
| CN201347393Y (en) * | 2008-12-30 | 2009-11-18 | 中冶南方工程技术有限公司 | Preprocessing apparatus of silicon iron hydrochloric acid waste water |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1689982A (en) * | 2004-04-28 | 2005-11-02 | 宝山钢铁股份有限公司 | Technique and equipment for treating waste liquor containing high concentration chromium by microorganisms |
| CN201347394Y (en) * | 2008-12-30 | 2009-11-18 | 中冶南方工程技术有限公司 | Preprocessing apparatus of cold-rolled silicon steel chromium-free coating layer waste liquid |
| CN201347393Y (en) * | 2008-12-30 | 2009-11-18 | 中冶南方工程技术有限公司 | Preprocessing apparatus of silicon iron hydrochloric acid waste water |
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Effective date of registration: 20201201 Address after: Building 1, No. 1508 Mudanjiang Road, Baoshan District, Shanghai, 201900 Patentee after: Baowu Water Technology Co., Ltd Address before: 201900 Shanghai city Baoshan District Tieli Road No. 2510 Patentee before: BAOSTEEL ENGINEERING & TECHNOLOGY GROUP Co.,Ltd. |