CN1834038A - Treatment of acid wastewater in cold rolling neutralizing station - Google Patents
Treatment of acid wastewater in cold rolling neutralizing station Download PDFInfo
- Publication number
- CN1834038A CN1834038A CN 200610046212 CN200610046212A CN1834038A CN 1834038 A CN1834038 A CN 1834038A CN 200610046212 CN200610046212 CN 200610046212 CN 200610046212 A CN200610046212 A CN 200610046212A CN 1834038 A CN1834038 A CN 1834038A
- Authority
- CN
- China
- Prior art keywords
- water
- neutralization
- cold rolling
- waste water
- metallurgical industry
- 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
- 239000002253 acid Substances 0.000 title claims abstract description 38
- 238000005097 cold rolling Methods 0.000 title claims abstract description 22
- 239000002351 wastewater Substances 0.000 title claims description 28
- 230000003472 neutralizing effect Effects 0.000 title description 3
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 23
- 239000013049 sediment Substances 0.000 claims abstract description 12
- 239000006004 Quartz sand Substances 0.000 claims abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims abstract description 8
- 238000005273 aeration Methods 0.000 claims abstract description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 4
- 239000001301 oxygen Substances 0.000 claims abstract description 4
- 239000000843 powder Substances 0.000 claims abstract description 4
- 238000007599 discharging Methods 0.000 claims description 13
- 239000002699 waste material Substances 0.000 claims description 10
- 239000007900 aqueous suspension Substances 0.000 claims description 8
- 238000009287 sand filtration Methods 0.000 claims description 7
- 239000003610 charcoal Substances 0.000 claims description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 4
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 4
- 239000004571 lime Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- 235000021050 feed intake Nutrition 0.000 claims description 3
- 239000004615 ingredient Substances 0.000 claims description 3
- 239000010805 inorganic waste Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 5
- 238000001556 precipitation Methods 0.000 abstract description 4
- 239000000725 suspension Substances 0.000 abstract description 4
- 239000010865 sewage Substances 0.000 abstract 3
- -1 Fe2+ ions Chemical class 0.000 abstract 2
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 238000004064 recycling Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 235000011116 calcium hydroxide Nutrition 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 238000001223 reverse osmosis Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
Images
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
This invention relates to a method to dispose acid sewage from cold-rolling neutralization station in metallurgical industry, which has the characteristics that: a) a U-tube is set below the aeration pool at the water outlet; b) raw materials are ground into 200~325micron dry powders and screw conveyed into the neutralization tank for neutralization; c) acid sewage is first introduced into aeration pool for aeration, where Fe2+ ions are changed into Fe3+ ions; d) water out of the ramp precipitation pool is introduced into centrifugal separator so that the suspension concentration can be further lowered; e) suspension concentration in water out of centrifugal separator is lower than 300mg/L, and after water goes through quartz sand and active carbon filter, suspension and chemical oxygen demand are both not larger than 100mg/L; f) ramp precipitation pool should be designed as shallow space and large surface areas. This invention provides a new technique to dispose sewage from cold-rolling neutralization station in metallurgical industry, with which investment can be saved, operation cost can be cut down and water recycling and sediment utilization can be realized. It brings significant economic benefits and fits the requirement of constructing economical society.
Description
Technical field
The invention belongs to resources conservation, environmental protection technical field, relate to the processing method that the cold rolling neutralization station acid waste water of a kind of metallurgical industry is handled.
Background technology
At present, the cold rolling neutralization station acid waste water of metallurgical industry both domestic and external is handled, and mainly adopts two kinds of treatment process.First kind is traditional milk of lime technology, and this technology is quickened lime to be added water be mixed with milk of lime, by the neutral method, makes the waste acid water pH value reach 6-9, and then through the settling tank precipitation, the discharging of supernatant liquor water, heavy mud press filtration become mud cake outward transport landfill.This Technology is the backward technology of the sixties in last century, its shortcoming is a lot, exists: investment is big, waste water resource, pH value unstable need secondary neutralization, dehydration bad, need add the heavy mud of emission standard, organism that polymeric flocculant, equipment pipeline easily stopped up, do not reach the cold rolling acid waste water of metallurgical industry of country and cause new secondary pollution problems.
Second kind is the external reverse osmosis technology that adopts at present.It mainly is a preposition water sepn of utilizing a kind of semipermeable partition under pressure the milk of lime method to be handled, with solute retention in the waste water, but finally makes waste discharge reach discharging standards and reuse.The reverse osmosis shortcoming is also a lot, mainly is that construction investment is huge, to preposition water condition require just to carve, membrane module change frequent, maintenance cost is high, be not suitable for the cold rolling neutralization station of metallurgical industry and use.In addition, reverse osmosis has 30% condensed water still need discharge, and forms secondary pollution, does not really reach discharging standards.The new secondary pollution of the heavy mud discharging also formation of organism.
Summary of the invention
The present invention is to the improvement of cold rolling acid waste water processing neutralizing agent of my patent of invention 2004100051616 metallurgical industry and processing method patent thereof and perfect, purpose is the defective that has overcome above-mentioned existence, the cold rolling neutralization station acid waste water of metallurgical industry is handled thoroughly reached national specified discharge standard, and water reuse and sediment comprehensive utilization in can realizing, the treatment process of the cold rolling neutralization station acid waste water of a kind of metallurgical industry is provided.
The treatment process content Description of the cold rolling neutralization station acid waste water of metallurgical industry of the present invention:
The treatment process of the cold rolling neutralization station acid waste water of metallurgical industry of the present invention is characterized in that:
(1), " U " shape pipe is installed, the height of " U " shape pipe is lower than the sky pond of exposing to the sun, the control sky pit level that exposes to the sun at the sky Chi Chushuichu that exposes to the sun;
(2), the neutralization reaction at neutralization tank adopts helical feed dry powder to feed intake, light-burning magnesium powder oversize and quickened lime are ground into the powdery of 200-325 micron, directly send in the neutralization reaction jar by worm conveyor or conveyor from storage bunker, reacted 15-45 minute;
(3), acid waste water to be processed in the waste acid water storage tank is at first squeezed into the sky pond aeration that exposes to the sun, make the Fe in the acid waste water
2+The ion price improves and becomes Fe3
+
(4), the water of discharging at inclined-plate clarifying basin is introduced into separating centrifuge, by the adjusting of centrifugal speed, muddy water further separated, and can use water suspension and be controlled in the follow-up filter process range, guarantees the advanced treatment quality;
(5), the water of separating centrifuge discharge enters quartz sand filtration device and charcoal filter, the concentration of the water suspension that separating centrifuge is discharged will be adjusted in below the 300mg/L, after entering quartz sand filtration device and charcoal filter, final water suspension of discharging and chemical oxygen demand (COD) all≤100mg/L;
(6), the design of inclined-plate clarifying basin wants the pond shallow, surface-area is big, its geometrical dimension is for long: wide: high=10: 2: 1.
The treatment process of the cold rolling neutralization station acid waste water of metallurgical industry of the present invention, the sediment that obtains is an inorganic wastes, and the chemical ingredients and the rhombspar of sediment are close, and it can be used for ironmaking, agglomerate batching and is used as other material of construction.
The present invention designs and has adopted advanced Process configuration, provide a kind of reduced investment, running cost low, water reuse and sediment comprehensive utilization in realizing, the cold rolling neutralization station acid waste water of the metallurgical industry of remarkable in economical benefits New Process for Treatment meets the demand for development of nation-building conservation-minded society.
Description of drawings
Fig. 1 is the process flow sheet of the cold rolling neutralization station process for treating acidic waste water of metallurgical industry
Among the figure: 1 for the acid waste water storage tank, 2 for acid proof pump, 3 for PH meter, 4 under meter, 5 for liquidometer, 6 for sky expose to the sun the pond, 7 for U-shaped communicating pipe, 8 for storage bunker, 9 for level gage, 10 for the neutralization reaction jar, 11 for slush pump, 12 for inclined-plate clarifying basin, 13 for separating centrifuge, 14 for sump pump, 15 for the quartz sand filtration device, 16 for activated charcoal filter, 17 for control groove eventually, 18 for mud tank, 19 for the slag stock pump, 20 for plate-and-frame filter press, 21 for plash, 22 be pipeline.
Embodiment
The treatment process of the cold rolling neutralization station acid waste water of metallurgical industry of the present invention has now been carried out experimental study in Anshan iron and steel plant group company and has been achieved in that below in conjunction with accompanying drawing and specifies.See Fig. 1, waste acid water in the waste acid water storage tank 1 is being thrown the sky pond 6 of exposing to the sun into through acid proof pump 2 by under meter 4, waste acid water entered neutralization reaction jar 10 through U-shaped communicating pipe 7 after sky exposed to the sun, muddy water after the neutralization enters inclined-plate clarifying basin 12 through slush pump 11, laggard to quartz sand filtration device 15 and activated charcoal filter 16 from the water that inclined-plate clarifying basin 12 is discharged through separating centrifuge 13 and sump pump 14, enter control groove 17 dischargings eventually at last or return waste acid water storage tank 1 by plash 21.
The sediment of inclined-plate clarifying basin 12 bottoms is discharged to mud tank 18 and gets to plate-and-frame filter press 20 through slag stock pump 19 by pipeline 22, and the sediment outward transport of extruding back fully utilizes.
In expose to the sun water outlet place in pond 6 of sky " U " shape pipe 7 is installed, the height of " U " shape pipe is lower than the sky pond of exposing to the sun, the liquid level in the empty pond of exposing to the sun of control.Neutralization reaction at neutralization tank 10 adopts helical feed dry powder to feed intake, light-burning magnesium powder oversize or quickened lime are ground into the powdery of 200-325 micron, directly send in the neutralization reaction jar 10 by worm conveyor or conveyor from storage bunker 8, reacted 15-45 minute, cancel the system breast and joined newborn process, can save a large amount of new water.Acid waste water to be processed in the waste acid water storage tank 1 is at first entered sky pond 6 aerations that expose to the sun, make the Fe in the acid waste water
2+The ion price improves and becomes Fe
3+, can save the neutralizing agent material like this, and shorten the neutralization reaction time, help flocculation sediment and subsequent disposal in neutralization reaction jar 10.The cold rolling neutralization station acid waste water composition that industrial scale is bigger is complicated, waste acid water concentration, flow are all unstable, the concentration instability of inclined-plate clarifying basin 12 water suspension of discharging like this, easily influence the effect of advanced water treatment, so the water that inclined-plate clarifying basin 12 is discharged will be introduced into separating centrifuge 13 muddy water is further separated, can use water suspension and be controlled in the follow-up filter process range, guarantee the advanced treatment quality.The water that separating centrifuge 13 is discharged enters quartz sand filtration device 15 and charcoal filter 16 through sump pump 14, the concentration of the suspended substance that separating centrifuge 13 is discharged will be adjusted in below the 300mg/L, after entering quartz sand filtration device 15 and charcoal filter 16, final water suspension of discharging and chemical oxygen demand (COD) all≤100mg/L, pH value is in the 6-9 scope, reach discharging standards, water reuse in can realizing.The design of inclined-plate clarifying basin 12 has strengthened surface-area, and the pond has shoaled, and can make the particle rapid precipitation of fine suspension to greatest extent, improves sedimentation effect.
The sediment of using the treatment process generation of the cold rolling neutralization station acid waste water of metallurgical industry of the present invention is an inorganic wastes, and the chemical ingredients and the rhombspar of sediment are close, and it can be used for ironmaking, agglomerate batching and be used as other material of construction.
Claims (2)
1, the treatment process of the cold rolling neutralization station acid waste water of a kind of metallurgical industry is characterized in that:
(1), " U " shape pipe is installed, the height of " U " shape pipe is lower than the sky pond of exposing to the sun, the control sky pit level that exposes to the sun at the sky Chi Chushuichu that exposes to the sun;
(2), the neutralization reaction at neutralization tank adopts helical feed dry powder to feed intake.Light-burning magnesium powder oversize and quickened lime are ground into the powdery of 200-325 micron, directly send in the neutralization reaction jar by worm conveyor or conveyor, reacted 15-45 minute from storage bunker;
(3), acid waste water to be processed in the waste acid water storage tank is at first squeezed into the sky pond aeration that exposes to the sun, make the Fe in the acid waste water
2+The ion price improves and becomes Fe
3+
(4), the water of discharging at inclined-plate clarifying basin enters separating centrifuge, by the adjusting of centrifugal speed, muddy water further separated, can using water suspension concentration, to reach 300mg/L following in follow-up filter process range;
(5), after the separating centrifuge water of discharging enters quartz sand filtration device and charcoal filter, final water suspension of discharging and chemical oxygen demand (COD) all≤100mg/L, pH value is in the 6-9 scope;
(6), the design of inclined-plate clarifying basin wants the pond shallow, surface-area is big, its geometrical dimension is for long: wide: high=10: 2: 1.
2, the treatment process of the cold rolling neutralization station acid waste water of metallurgical industry according to claim 1, it is characterized in that: using the sediment that the treatment process of the cold rolling neutralization station acid waste water of metallurgical industry of the present invention obtains is inorganic wastes, the chemical ingredients and the rhombspar of sediment are close, and it is used for ironmaking, agglomerate batching and is used as other material of construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100462129A CN100441527C (en) | 2006-03-31 | 2006-03-31 | Treatment of acid wastewater in cold rolling neutralizing station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100462129A CN100441527C (en) | 2006-03-31 | 2006-03-31 | Treatment of acid wastewater in cold rolling neutralizing station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1834038A true CN1834038A (en) | 2006-09-20 |
| CN100441527C CN100441527C (en) | 2008-12-10 |
Family
ID=37001961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100462129A Expired - Fee Related CN100441527C (en) | 2006-03-31 | 2006-03-31 | Treatment of acid wastewater in cold rolling neutralizing station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100441527C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249462A (en) * | 2011-06-17 | 2011-11-23 | 东莞市保源达房地产开发有限公司 | Method for recycling and processing residential area acidic water |
| CN106745960A (en) * | 2016-11-25 | 2017-05-31 | 江苏省沙钢钢铁研究院有限公司 | Comprehensive utilization method of steelmaking refining fly ash |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170061195A (en) * | 2012-06-11 | 2017-06-02 | 카와사키 주코교 카부시키 카이샤 | Wastewater treatment device, wastewater treatment system, exhaust gas recirculation unit, engine system, and ship |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5584587A (en) * | 1978-12-19 | 1980-06-25 | Nisshin Steel Co Ltd | Treatment of emulsified oil-containing waste water |
| JPS56113392A (en) * | 1980-02-14 | 1981-09-07 | Nippon Steel Corp | Disposal of oil-containing waste water |
| JPS6178491A (en) * | 1984-09-25 | 1986-04-22 | Kawasaki Steel Corp | Treatment of pickling rinse waste liquid |
| CN1025053C (en) * | 1991-11-14 | 1994-06-15 | 清华大学 | Treatment technique for waste acid of washing cold-rolled parts with chlorhydric acid |
| CN1255339C (en) * | 2003-06-04 | 2006-05-10 | 王涛 | Cold rolled acid waste water disposal neutralizer in metallurgical industry and its process method |
| CN1456517A (en) * | 2003-06-04 | 2003-11-19 | 王涛 | Acid waste water treating process and apparatus |
-
2006
- 2006-03-31 CN CNB2006100462129A patent/CN100441527C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249462A (en) * | 2011-06-17 | 2011-11-23 | 东莞市保源达房地产开发有限公司 | Method for recycling and processing residential area acidic water |
| CN102249462B (en) * | 2011-06-17 | 2013-06-05 | 东莞市保源达房地产开发有限公司 | Method for recycling and processing residential area acidic water |
| CN106745960A (en) * | 2016-11-25 | 2017-05-31 | 江苏省沙钢钢铁研究院有限公司 | Comprehensive utilization method of steelmaking refining fly ash |
| CN106745960B (en) * | 2016-11-25 | 2020-11-13 | 江苏省沙钢钢铁研究院有限公司 | Comprehensive utilization method of steelmaking refining fly ash |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100441527C (en) | 2008-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA3007903C (en) | Recovery of phosphorus compounds from wastewater | |
| CN103524001B (en) | Treatment method for high fat food processing wastewater | |
| CN105000766B (en) | Cleaner production method for increasing nitrogen and phosphorus recovery rate of residual activated sludge | |
| CN102390909B (en) | Method for treating nucleic acid waste water | |
| CN102659281A (en) | Treatment method of liquor production wastewater | |
| CN101973619A (en) | Method for treating waste water from copper smelting by using modified ardealite | |
| CN103408201A (en) | Treatment method of industrial wastewater in silicon wafer mortar recovery | |
| CN112645545A (en) | Garbage transfer station leachate treatment system and treatment method thereof | |
| CN109133524A (en) | The processing system and processing method of high COD medicine intermediate wastewater from chemical industry with high salt | |
| CN104370411A (en) | Method for removing heavy metals from industrial wastewater | |
| CN111943461A (en) | Electrolytic capacitor and electrode foil wastewater treatment method and treatment system | |
| CN107585972A (en) | Grease processing waste water handling process and device | |
| CN111392984A (en) | Advanced treatment system and method for supplementing water by using urban reclaimed water as circulating water of power plant | |
| CN109626627B (en) | High-salt ash leachate pretreatment method | |
| CN105293822B (en) | Coal chemical industry sewage disposal fundamental technology | |
| CN117466479A (en) | Low-carbon recycling treatment process for bean product wastewater | |
| CN100441527C (en) | Treatment of acid wastewater in cold rolling neutralizing station | |
| CN211226778U (en) | Sweetleaf chrysanthemum processing effluent disposal system | |
| CN105016522B (en) | Film treatment process for fatty acid wastewater | |
| CN212293242U (en) | Electrolytic capacitor and electrode foil wastewater treatment system | |
| CN212102493U (en) | Advanced treatment system for supplementing water by using urban reclaimed water as circulating water of power plant | |
| Wang et al. | Floc destruction and its impact on dewatering properties in the process of using flat-sheet membrane for simultaneous thickening and digestion of waste activated sludge | |
| CN107935242B (en) | Red mud leachate wastewater treatment process | |
| CN203498230U (en) | High-fat food processing waste water treatment device | |
| CN202072565U (en) | Module type heavy metal waste water efficient treatment device |
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 | ||
| ASS | Succession or assignment of patent right |
Owner name: ANSHAN HONGYUAN ENVIRONMENTAL PROTECTING + ENERGY- Free format text: FORMER OWNER: WANG TAO Effective date: 20121012 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 114001 ANSHAN, LIAONING PROVINCE TO: 114044 ANSHAN, LIAONING PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20121012 Address after: 114044 Liaoning city of Anshan province high tech Zone Anqian Road No. 452 Patentee after: ANSHAN HONGYUAN ENVIRONMENT ENERGY ENGINEERING CO., LTD. Address before: 114001, 40-1 East solidarity Street, Anshan, Liaoning Patentee before: Wang Tao |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081210 Termination date: 20210331 |