CN101781008B - Method for pre-treating cold-rolled silicon steel coat waste liquid - Google Patents
Method for pre-treating cold-rolled silicon steel coat waste liquid Download PDFInfo
- Publication number
- CN101781008B CN101781008B CN2010101179769A CN201010117976A CN101781008B CN 101781008 B CN101781008 B CN 101781008B CN 2010101179769 A CN2010101179769 A CN 2010101179769A CN 201010117976 A CN201010117976 A CN 201010117976A CN 101781008 B CN101781008 B CN 101781008B
- Authority
- CN
- China
- Prior art keywords
- waste liquid
- silicon steel
- rolled silicon
- steel coat
- waste
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to a method for pre-treating cold-rolled silicon steel coat waste liquid, which comprises the following steps: A, feeding lime into the waste liquid to adjust the pH value of the waste liquid to between 7.0 and 10.0; B, feeding solution of PAM flocculating agent into the waste liquid to perform flocculent settlement; C, making the settled waste liquid directly flow to a waste water pit; or D, separating solid from liquid in the settled waste liquid through a centrifuge, and then making the waste liquid flow to a waste water pit; and E, delivering the treated waste liquid to a waste water treatment station to perform further treatment. The method of the invention effectively overcomes the blockage of pipelines and water treatment equipment due to organic resin contained in the coat waste water, improves the running safety, stability and reliability of a water treatment system, and reduces the daily operating maintenance cost. The method for pre-treating the cold-rolled silicon steel coat waste liquid tightly combines the physical and chemical treatment technology and the production process to realize batch pretreatment for the silicon steel coat waste liquid. The method has the advantages of low primary investment, stable treatment effect, low production running cost, simple and convenient operation and the like.
Description
Technical field
The invention belongs to the Industrial Wastewater Treatment field, specifically relate to a kind of pretreatment process of cold-rolled silicon steel coat waste liquid.
Background technology
Cold-rolled silicon steel coat waste water is meant: cold rolled silicon steel reaches the insulation purpose for making silicon steel; And utilize organic coating to be coated on the waste water that is produced 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, conventional treatment process is to bring it into overall waste water processing station to handle.
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,, increased the load of water treatment station though this has alleviated the obstruction of pipeline and water treating equipment to a certain extent; Cause a large amount of new water to be consumed, wasted the energy.
In view of this, seek a kind of pretreatment technology of simple and easy practicality, make coating waste water produce point, and then send waste water station that principal pollutant are further degraded, become pursuing one's goal of these those skilled in the art earlier through rough handling.
Summary of the invention
The purpose of this invention is to provide a kind of method for pre-treating cold-rolled silicon steel coat waste liquid; It has solved above-mentioned existing in prior technology problem; Make coat waste liquid produce point to reach earlier through rough handling, and then the purpose of giving waste water station that principal pollutant are further degraded.
Technical solution of the present invention is following:
A kind of method for pre-treating cold-rolled silicon steel coat waste liquid may further comprise the steps:
A, add lime, said waste liquor PH value is adjusted to 7.0～10.0;
B, add the PAM flocculant solution and carry out coagulant precipitation;
C, be flowed directly to effluent pit through settled waste liquid; Perhaps,
D, realize solid-liquid separation flowing to effluent pit then through whizzer through settled waste liquid;
E, the waste liquid that is processed are transported to waste water processing station and further handle.
The purity that adds lime in the said steps A is greater than 90%.
The concentration of PAM flocculant solution is 1 ‰ among the said step B.
To in 24 hours, use after the preparation of PAM flocculant solution among the said step B.
The flocculating settling process of said step B is a batch processed.
Said steps A and step B carry out under whipped state, stop to stir in 10 minutes behind the flocculant concentration, and its stirring velocity is controlled at 60～80rpm.
Behind each batch, electric machine frequency inserts clear water and cleans under the 25Hz state in the centrifuge separation process of said step D.
Waste liquid is further handled to waste water processing station by the hole pump delivery in the said step e.
The present invention provides a kind of cold-rolled silicon steel coat wastewater preprocessing process.Cold-rolled silicon steel coat waste water is through adding pH adjustment, the flocculation agent coagulant precipitation of lime; Contained sediments such as organic resin carry out solid-liquid separation by whizzer in settled coating waste water; Flow automatically to effluent pit through this pretreated whizzer water outlet, further handle to waste water processing station by the hole pump delivery.Perhaps, cold-rolled silicon steel coat waste water is flowed directly to effluent pit through adding pH adjustment, the flocculation agent coagulant precipitation of lime through settled coating waste water, is further handled to waste water processing station by the hole pump delivery.
Adopt technology of the present invention, overcome coating waste water effectively, improved security and stability, the safety of the operation of water treatment system, reduce the day-to-day operation maintenance cost because of the contain organic resin pipeline that causes, the obstruction of water treating equipment.
By method for pre-treating cold-rolled silicon steel coat waste liquid of the present invention, the treatment technology and the production technique of physics, chemistry are combined closely, realize mass pre-treatment to the silicon steel coat waste liquid.
The present invention makes it compared with prior art owing to adopted above technical scheme, and the present invention has following advantage:
1, one-time investment is low;
2, treatment effect is stable;
3, the production run cost is low;
4, the operation operation is easy.
Description of drawings
Fig. 1 is the schema of a kind of method for pre-treating cold-rolled silicon steel coat waste liquid of the present invention.
Fig. 2 is the cold-rolled silicon steel coat waste liquid pretreatment process figure of one embodiment of the present of invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated.
Referring to Fig. 1,, may further comprise the steps by a kind of method for pre-treating cold-rolled silicon steel coat waste liquid of the present invention:
A, add lime, silicon steel coat waste liquid pH value is adjusted to 7.0～10.0.The purity that wherein adds lime is greater than 90%.
B, add PAM (SEPIGEL 305) flocculant solution and carry out coagulant precipitation.Wherein the concentration of PAM flocculant solution is 1 ‰, and will in 24 hours, use after the preparation of PAM flocculant solution.
C, be flowed directly to effluent pit through settled waste liquid; Perhaps,
D, realize solid-liquid separation flowing to effluent pit then through whizzer through settled waste liquid.In centrifugal separation processes, behind each batch, should insert clear water under for the 25Hz state at the electric machine frequency of whizzer and clean.
E, the waste liquid that is processed are transported to waste water processing station and further handle.
The flocculating settling process of said step B is a batch processed, so the volume of flocculating settling jar should rationally be confirmed the volume of slurry tank according to the generation of coat waste liquid.
Said steps A and step B carry out under whipped state, stop to stir in 10 minutes behind the flocculant concentration, and its stirring velocity is controlled at 60～80rpm (PM rotating speed).
Waste liquid is further handled to waste water processing station by the hole pump delivery in the said step e.
According to pretreatment technology of the present invention, one of them embodiment preferred is rationally to confirm the processing power of pre-processing device according to the volume in (groove) pond of catchmenting.
Referring to Fig. 2, the pretreatment technology of a kind of cold-rolled silicon steel coat waste water of the present invention comprises treatment steps such as pH adjustment, flocculating settling, spinning, and its processing technological flow is shown in figure.Technical process of the present invention is following: the coating waste water that produces at first is pooled to water leg (pond); According to liquid level coating waste water is transported to pH adjustment, flocculating settling jar; In this jar, accomplish pH adjustment, flocculating settling process; In the pH adjustment, the required lime purity that adds is more than 90%, and the processing parameter of pH adjustment is: pH7.0～10.0; After this add the PAM flocculant solution of 1 ‰ concentration again, in above-mentioned two processes, all need stirrer to stir, so that the fully mixed reaction of coating waste water; Fully after the reaction, stir, out of service, make coating waste water uniform settling in jar, be flowed directly to effluent pit through settled waste water; The waste liquid that is processed is transported to waste water processing station and further handles.
Perhaps, treat that coating waste water fully reacts after, stir, out of service, make coating waste water uniform settling in jar, behind the certain hour, start whizzer, screw rod transmission pump automatically, the screw rod transmission pump is transported to the whizzer solid-liquid separation with coating waste water; To the liquid level of setting, close the screw rod transmission pump, and make whizzer through speed control by frequency variation, make the whizzer motor drop to 25Hz, open the flushing with clean water valve simultaneously and clean, 5min closes purge valve and whizzer, and such one batch processing finishes.
After using method for pre-treating cold-rolled silicon steel coat waste liquid of the present invention, the data before and after the wastewater treatment of silicon steel coating are table as follows:
| Project | The water inlet index | Effluent index |
| Organic resin | ≤1000mg/L | ≤100mg/L |
| The pH value | 5～9 | 8～9.5 |
In sum, adopt treatment process of the present invention, overcome coating waste water effectively, improved security and stability, the safety of the operation of water treatment system, reduce the day-to-day operation maintenance cost because of the contain organic resin pipeline that causes, the obstruction of water treating equipment.The present invention has advantages such as one-time investment is low, treatment effect stable, the production run cost is low, the operation operation is easy.
Certainly; Those skilled in the art in the present technique field will be appreciated that; The foregoing description only is to be used for explaining the present invention; And be not with opposing qualification of the present invention, as long as in connotation scope of the present invention, all will drop in the scope of claim of the present invention the variation of the foregoing description, modification etc.
Claims (6)
1. a method for pre-treating cold-rolled silicon steel coat waste liquid is characterized in that, may further comprise the steps:
A, add lime, said waste liquor PH value is adjusted to 7.0～10.0;
B, add the PAM flocculant solution and carry out coagulant precipitation, the concentration of PAM flocculant solution is 1 ‰;
C, be flowed directly to effluent pit through settled waste liquid; Perhaps,
D, realize solid-liquid separation flowing to effluent pit then through whizzer through settled waste liquid;
E, the waste liquid that is processed are transported to waste water processing station and further handle;
Said steps A and step B carry out under whipped state, stop to stir in 10 minutes behind the flocculant concentration, and its stirring velocity is controlled at 60～80rpm.
2. method for pre-treating cold-rolled silicon steel coat waste liquid according to claim 1 is characterized in that the purity that adds lime in the said steps A is greater than 90%.
3. method for pre-treating cold-rolled silicon steel coat waste liquid according to claim 1 is characterized in that, will in 24 hours, use after the preparation of PAM flocculant solution among the said step B.
4. method for pre-treating cold-rolled silicon steel coat waste liquid according to claim 1 is characterized in that, the flocculating settling process of said step B is a batch processed.
5. method for pre-treating cold-rolled silicon steel coat waste liquid according to claim 1 is characterized in that, behind each batch, electric machine frequency inserts clear water and cleans under the 25Hz state in the centrifuge separation process of said step D.
6. method for pre-treating cold-rolled silicon steel coat waste liquid according to claim 1 is characterized in that, waste liquid is further handled to waste water processing station by the hole pump delivery in the said step e.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101179769A CN101781008B (en) | 2010-03-05 | 2010-03-05 | Method for pre-treating cold-rolled silicon steel coat waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101179769A CN101781008B (en) | 2010-03-05 | 2010-03-05 | Method for pre-treating cold-rolled silicon steel coat waste liquid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101781008A CN101781008A (en) | 2010-07-21 |
| CN101781008B true CN101781008B (en) | 2012-06-27 |
Family
ID=42521178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101179769A Expired - Fee Related CN101781008B (en) | 2010-03-05 | 2010-03-05 | Method for pre-treating cold-rolled silicon steel coat waste liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101781008B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112010384B (en) * | 2019-05-28 | 2022-10-21 | 宝山钢铁股份有限公司 | Method and system for removing silicon ions and organic nitrogen in cold rolling biochemical effluent |
| CN115504618A (en) * | 2022-10-09 | 2022-12-23 | 河南宏旺金属材料有限公司 | Stainless steel cold rolling wastewater treatment device and recycling treatment method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1939846A (en) * | 2005-09-29 | 2007-04-04 | 宝山钢铁股份有限公司 | Separation of vinyl-acetate resin from chromium-contained effluent |
| CN101100339A (en) * | 2007-07-26 | 2008-01-09 | 胡建平 | Process for reclaiming and treating phosphorization sewage |
| CN101269889A (en) * | 2007-03-23 | 2008-09-24 | 宁波宝新不锈钢有限公司 | Processing method for stainless steel acid cleaning waste water and liquid |
-
2010
- 2010-03-05 CN CN2010101179769A patent/CN101781008B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1939846A (en) * | 2005-09-29 | 2007-04-04 | 宝山钢铁股份有限公司 | Separation of vinyl-acetate resin from chromium-contained effluent |
| CN101269889A (en) * | 2007-03-23 | 2008-09-24 | 宁波宝新不锈钢有限公司 | Processing method for stainless steel acid cleaning waste water and liquid |
| CN101100339A (en) * | 2007-07-26 | 2008-01-09 | 胡建平 | Process for reclaiming and treating phosphorization sewage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101781008A (en) | 2010-07-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110862188B (en) | Chemical phosphorus removal accurate dosing system and control method | |
| CN102020373A (en) | Process for treating phosphate coating wastewater of steel pipes | |
| CN102351386B (en) | Potato type ethanol wastewater treatment method and system | |
| WO2018237151A1 (en) | System and method for continuous processing of organic waste with undigested solids recirculation | |
| CN101781008B (en) | Method for pre-treating cold-rolled silicon steel coat waste liquid | |
| CN104098235A (en) | Sewage treatment method of casing plant | |
| CN101811789B (en) | Pretreatment system for cold-rolled silicon steel coat waste liquor | |
| CN104085931A (en) | Comprehensive adjusting system and adjusting method for industrial wastewater treatment | |
| Basset et al. | Comparison of aerobic granulation and anaerobic membrane bioreactor technologies for winery wastewater treatment | |
| CN101786714B (en) | Pretreatment system for cold rolled silicon steel coating waste liquid | |
| CN103288241B (en) | Waste water circulation cooling two-stage clarifying and softening system | |
| CN101781009A (en) | Method for pretreating cold-rolled silicon steel coating effluent | |
| EP3283441B1 (en) | Method and system for anaerobic treatment of organically loaded wastewater | |
| CN213112847U (en) | Electrophoresis effluent disposal system | |
| CN112850938A (en) | Reverse osmosis strong brine softening system and method | |
| CN102964026A (en) | Shunt process for wastewater pretreatment | |
| CN108946936B (en) | UASB reactor with pulse water distribution | |
| CN108715477B (en) | Reaction device and method for removing nitrogen and phosphorus elements in sewage | |
| CN111498951A (en) | Electrochemical MAP precipitation device and process method for treating ammonia nitrogen sewage | |
| CN210394008U (en) | Integrated treatment equipment for pickling wastewater | |
| CN221254315U (en) | Semiconductor silicon carbide wastewater treatment system | |
| CN103508625B (en) | A kind for the treatment of facility of removing fluoride and calcium ion in coal chemical industry sewage | |
| CN217921803U (en) | Quenching and tempering and energy recovery system are reinforceed to municipal administration mud | |
| CN216191594U (en) | High concentration hydrofluoric acid wastewater pretreatment system | |
| CN218248695U (en) | System for discharging mud and recovering supernatant in inclined plate sedimentation tank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120627 Termination date: 20190305 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |