CN102515435A - Method for processing silicon carbide industrial wastewater - Google Patents
Method for processing silicon carbide industrial wastewater Download PDFInfo
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- CN102515435A CN102515435A CN2011104296491A CN201110429649A CN102515435A CN 102515435 A CN102515435 A CN 102515435A CN 2011104296491 A CN2011104296491 A CN 2011104296491A CN 201110429649 A CN201110429649 A CN 201110429649A CN 102515435 A CN102515435 A CN 102515435A
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Abstract
The invention discloses a method for processing silicon carbide industrial wastewater, which successively enters into a reaction unit, a precipitation separation unit, an anaerobic biochemical unit, an aerobic biochemical unit and a filtering unit. In the reaction unit, a polymeric flocculant polyaluminium chloride is added into the silicon carbide industrial wastewater and a flocculation reaction is carried out in a grid cyclone reaction tank. In the precipitation separation unit, a multi-stage arc fin inclined plate sedimentation basin is adopted. In the anaerobic biochemical unit, an upflow anaerobic sludge bed reactor is adopted. In the aerobic biochemical unit, a high-efficiency biological contact oxidation device is adopted. In the filtering unit, an active carbon filtering apparatus is adopted. The method provided by the invention is suitable for the treatment of silicon carbide production wastewater. After the treatment, wastewater can reach the primary standard in ''Sewage comprehensive discharge standard'' GB8978-1996. In the meanwhile, a silicon carbide suspension micro powder in the wastewater is fully recovered and utilized.
Description
Technical field
The present invention relates to a kind of silit processing method of industrial waste water.
Background technology
Silicon carbide products is applied to advanced industries such as the cutting of photovoltaic electronics silicon chip line, piezoquartz, semi-conductor, ceramic grinding polishing material and high grade refractory at present; And silit produces great amount of wastewater in process of production; The silicon carbide micro-powder that contains a large amount of recyclable utilizations in the waste water, and macromole hardly degraded organic substance such as polyoxyethylene glycol.Current, the processing of silit trade effluent mainly is physical methods such as traditional flocculation sediment, filtration, can only remove the silit suspended substance in the waste water, but larger molecular organicses such as polyoxyethylene glycol are not removed.It is big that such treatment process ubiquity flocculant dosage, and working cost is high, handles not thoroughly, moves shortcomings such as not up to standard.
Summary of the invention
It is high to the purpose of this invention is to provide a kind of processing efficiency, and working cost is low, the silit process for treating industrial waste water that the micro mist recovery is high, and it can make the sector discharge of wastewater reach the primary standard among " integrated wastewater discharge standard " GB8978-1996.
Technical scheme of the present invention is: a kind of silit processing method of industrial waste water comprises processes such as reaction, separation, anaerobic and aerobic biochemical treatment and filtration.Said reaction promptly adds polymeric flocculant successively in water;, grid cyclone reaction pond gets into the precipitate and separate unit again after carrying out flocculation reaction; Deposition adopts multistage arcuated fin piece inclined-plate clarifying basin; The anaerobic biological unit adopts up-flow anaerobic sludge blanket (UASB) reactor drum, and the aerobic biochemical unit adopts high-performance bio catalytic oxidation device, and filtering unit adopts active carbon filtering device.Present method is applicable to the processing of silit factory effluent, can reach the primary standard among " integrated wastewater discharge standard " GB8978-1996 after treatment, simultaneously the silit suspension micro mist in the waste water is recycled fully.
Said grid cyclone reaction pond comprise at least two independently of one another and through otch be communicated with the grid pond; Said each grid pond comprises two layers of mesh compartment at least; The interval horizontal distribution is fixed on the inner side-wall of grid pond between each clathrum; Fluid inlet is positioned at deflection grid pond sidewall locations to be installed, and makes feed liquor produce eddy flow.
Said multistage arcuated fin piece inclined-plate clarifying basin comprises four settling tanks independent of each other at least, adopts the arcuated fin piece swash plate in each settling tank.
The bending direction of said each arc of arcuated fin piece swash plate, crooked radian, width unanimity.
Said each settling tank residence time is 2.5 hours.
Said reaction in anaerobic pond is at PH=6.5-7.5, and dissolved oxygen (DO) is less than carrying out under the 0.2mg/L condition.
Hydraulic detention time is 36 hours in the said anaerobic pond.
Said reaction in Aerobic Pond is at PH=6.5-8.0, and dissolved oxygen (DO) carries out under the 2.0-4.0mg/L condition.
Hydraulic detention time is 10 hours in the said Aerobic Pond.
Present method is applicable to the processing of silit factory effluent, can reach the primary standard among " integrated wastewater discharge standard " GB8978-1996 after treatment, simultaneously the silit suspension micro mist in the waste water is recycled fully.
Description of drawings
Fig. 1 is a silit process for treating industrial waste water schema.
Embodiment
The silit factory effluent carries out pumping into No. 1, grid cyclone reaction pond after the homogenizing of water quality, the water yield in equalizing tank, and polymeric flocculant is added in the waste water through line mixer, and the suspended substance in flocculation agent and the waste water reacts in reaction tank; Reaction times is 45min, and mud-water separation is carried out from flowing into settling tank No. 1 in the reaction back; Settling tank adopts the arcuated fin piece swash plate, and precipitated outlet water gets into grid cyclone reaction pond 2,3 and No. 4 flocculation tanks and settling tanks more successively, and flocculation agent is added in 2,3 and No. 4 flocculation tanks successively; Recycle after dewatering through the silicon carbide micro-powder after the precipitate and separate; Waste water pumps into anaerobic pond UASB reaction tank again, through the effect of anaerobion the polyoxyethylene glycol larger molecular organics in the waste water is degraded, and the residence time is 36 hours; The UASB water outlet is from flowing into Aerobic Pond; The residence time is 10 hours, and oxygenic aeration, through the effect of aerobic microbiological the organism in the waste water is thoroughly decomposed; Biochemistry pool goes out water mixed liquid finally to be handled through active carbon filtering device after settling tank separates again, realizes qualified discharge.The total hydraulic detention time of system is about 60 hours, at influent quality COD5000mg/L, and BOD2000 mg/L, under the situation of SS1500 mg/L, effluent quality COD is less than 100mg/L, and BOD is less than 30mg/L, and SS is less than 70mg/L.
Claims (9)
1. silit processing method of industrial waste water; It is characterized in that: the silit trade effluent gets into reaction member, precipitate and separate unit, anaerobic biological unit, aerobic biochemical unit and filtering unit successively; Said reaction member is in the silit trade effluent, to add macromolecule flocculant poly aluminum chloride; Carry out flocculation reaction through grid cyclone reaction pond, said precipitate and separate unit adopts multistage arcuated fin piece inclined-plate clarifying basin, and the anaerobic biological unit adopts upflow anaerobic sludge blanket reactor; Said aerobic biochemical unit adopts high-performance bio catalytic oxidation device, and said filtering unit adopts active carbon filtering device.
2. silit processing method of industrial waste water according to claim 1; It is characterized in that: said grid cyclone reaction pond comprise at least two independently of one another and through otch be communicated with the grid pond; Said each grid pond comprises two layers of mesh compartment at least; The interval horizontal distribution is fixed on the inner side-wall of grid pond between each clathrum, and fluid inlet is positioned at deflection grid pond sidewall locations to be installed, and makes feed liquor produce eddy flow.
3. silit processing method of industrial waste water according to claim 1 is characterized in that: said multistage arcuated fin piece inclined-plate clarifying basin comprises four settling tanks independent of each other at least, adopts the arcuated fin piece swash plate in each settling tank.
4. silit processing method of industrial waste water according to claim 1 is characterized in that: the bending direction of said each arc of arcuated fin piece swash plate, crooked radian, width unanimity.
5. silit processing method of industrial waste water according to claim 1 is characterized in that: each settling tank residence time is 2.5 hours.
6. silit processing method of industrial waste water according to claim 1 is characterized in that: the reaction in anaerobic pond is at PH=6.5-7.5, and dissolved oxygen is less than carrying out under the 0.2mg/L condition.
7. silit processing method of industrial waste water according to claim 1 is characterized in that: hydraulic detention time is 36 hours in anaerobic pond.
8. silit processing method of industrial waste water according to claim 1 is characterized in that: the reaction in Aerobic Pond is at PH=6.5-8.0, and dissolved oxygen carries out under the 2.0-4.0mg/L condition.
9. silit processing method of industrial waste water according to claim 1 is characterized in that: hydraulic detention time is 10 hours in the Aerobic Pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011104296491A CN102515435A (en) | 2011-12-20 | 2011-12-20 | Method for processing silicon carbide industrial wastewater |
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| CN2011104296491A CN102515435A (en) | 2011-12-20 | 2011-12-20 | Method for processing silicon carbide industrial wastewater |
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| CN102515435A true CN102515435A (en) | 2012-06-27 |
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| CN2011104296491A Pending CN102515435A (en) | 2011-12-20 | 2011-12-20 | Method for processing silicon carbide industrial wastewater |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745777A (en) * | 2012-07-11 | 2012-10-24 | 山东博洋环境资源有限公司 | Zero-emission processing method of silicon-carbide micropowder wastewater |
| CN103041645A (en) * | 2012-11-29 | 2013-04-17 | 大连凯泓科技有限公司 | Durable water treating equipment |
| CN103755075A (en) * | 2014-01-28 | 2014-04-30 | 鞍山宏源环能科技有限公司 | Technical method for treating silicon carbide acidic wastewater |
| CN105923925A (en) * | 2016-06-24 | 2016-09-07 | 江苏中宜金大环保产业技术研究院有限公司 | High-COD (Chemical Oxygen Demand) fine-silicon-powder-containing wastewater treatment device and method |
| CN106082530A (en) * | 2016-06-17 | 2016-11-09 | 云南今业生态建设集团有限公司 | A kind of integrated treatment photovoltaic energy enterprise productive life method of wastewater treatment |
| CN110510822A (en) * | 2019-09-09 | 2019-11-29 | 山东大海新能源发展有限公司 | A kind of polycrystalline silicon industry wastewater treatment recovery method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201746411U (en) * | 2010-07-14 | 2011-02-16 | 中平能化集团易成新材料有限公司 | Device for continuously treating and recovering micro powder classification tailing waste water |
| CN201801432U (en) * | 2010-07-07 | 2011-04-20 | 江苏大阳微粉科技有限公司 | Water circulation system in silicon carbide production |
| CN102092876A (en) * | 2010-11-26 | 2011-06-15 | 临沂市凯祥硅粉有限公司 | Treatment method of waste water discharged by silicon carbide micro powder production device |
-
2011
- 2011-12-20 CN CN2011104296491A patent/CN102515435A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201801432U (en) * | 2010-07-07 | 2011-04-20 | 江苏大阳微粉科技有限公司 | Water circulation system in silicon carbide production |
| CN201746411U (en) * | 2010-07-14 | 2011-02-16 | 中平能化集团易成新材料有限公司 | Device for continuously treating and recovering micro powder classification tailing waste water |
| CN102092876A (en) * | 2010-11-26 | 2011-06-15 | 临沂市凯祥硅粉有限公司 | Treatment method of waste water discharged by silicon carbide micro powder production device |
Non-Patent Citations (1)
| Title |
|---|
| 郑静等: "单、多晶硅生产废水处理工程实例", 《淮海工学院学报(自然科学版)》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745777A (en) * | 2012-07-11 | 2012-10-24 | 山东博洋环境资源有限公司 | Zero-emission processing method of silicon-carbide micropowder wastewater |
| CN103041645A (en) * | 2012-11-29 | 2013-04-17 | 大连凯泓科技有限公司 | Durable water treating equipment |
| CN103041645B (en) * | 2012-11-29 | 2015-05-20 | 大连凯泓科技有限公司 | Durable water treating equipment |
| CN103755075A (en) * | 2014-01-28 | 2014-04-30 | 鞍山宏源环能科技有限公司 | Technical method for treating silicon carbide acidic wastewater |
| CN103755075B (en) * | 2014-01-28 | 2015-03-25 | 鞍山宏源环能科技有限公司 | Technical method for treating silicon carbide acidic wastewater |
| CN106082530A (en) * | 2016-06-17 | 2016-11-09 | 云南今业生态建设集团有限公司 | A kind of integrated treatment photovoltaic energy enterprise productive life method of wastewater treatment |
| CN105923925A (en) * | 2016-06-24 | 2016-09-07 | 江苏中宜金大环保产业技术研究院有限公司 | High-COD (Chemical Oxygen Demand) fine-silicon-powder-containing wastewater treatment device and method |
| CN105923925B (en) * | 2016-06-24 | 2019-03-05 | 江苏中宜金大环保产业技术研究院有限公司 | A kind of high COD wastewater treatment equipment containing fine silica powder and processing method |
| CN110510822A (en) * | 2019-09-09 | 2019-11-29 | 山东大海新能源发展有限公司 | A kind of polycrystalline silicon industry wastewater treatment recovery method |
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Application publication date: 20120627 |