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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- silit
- waste water
- pond
- processing method
- industrial waste
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- 239000010842 industrial wastewater Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title abstract description 10
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title abstract description 8
- 229910010271 silicon carbide Inorganic materials 0.000 title abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 22
- 238000005189 flocculation Methods 0.000 claims abstract description 8
- 230000016615 flocculation Effects 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 230000003647 oxidation Effects 0.000 claims abstract description 3
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 3
- 239000010802 sludge Substances 0.000 claims abstract description 3
- 238000003672 processing method Methods 0.000 claims description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 239000002244 precipitate Substances 0.000 claims description 4
- 238000009298 carbon filtering Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- 230000002210 biocatalytic effect Effects 0.000 claims description 2
- 238000009826 distribution Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims 2
- 229920002521 macromolecule Polymers 0.000 claims 1
- 239000002351 wastewater Substances 0.000 abstract description 17
- 238000000926 separation method Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 2
- 238000004062 sedimentation Methods 0.000 abstract 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 238000001556 precipitation Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- -1 polyoxyethylene Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Images
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
本发明公开了一种碳化硅工业废水的处理方法，碳化硅工业废水依次进入反应单元、沉淀分离单元、厌氧生化单元、好氧生化单元和过滤单元，所述反应单元是在碳化硅工业废水中加入高分子絮凝剂聚合氯化铝，经网格旋流反应池进行絮凝反应，所述沉淀分离单元采用多级弧形翼片斜板沉淀池，厌氧生化单元采用上流式厌氧污泥床反应器，所述好氧生化单元采用高效生物接触氧化装置，所述过滤单元采用活性炭过滤装置。本方法适用于碳化硅生产废水的处理，经处理后可达到《污水综合排放标准》GB8978-1996中的一级标准，同时对废水中的碳化硅悬浮微粉进行充分的回收利用。The invention discloses a method for treating silicon carbide industrial wastewater. The silicon carbide industrial wastewater sequentially enters a reaction unit, a precipitation separation unit, an anaerobic biochemical unit, an aerobic biochemical unit and a filtration unit. The polymer flocculant polyaluminum chloride is added to the grid, and the flocculation reaction is carried out through the grid swirl reaction tank. The sedimentation and separation unit adopts a multi-stage arc fin inclined plate sedimentation tank, and the anaerobic biochemical unit adopts an upflow anaerobic sludge bed reactor, the aerobic biochemical unit adopts a high-efficiency biological contact oxidation device, and the filter unit adopts an activated carbon filter device. The method is suitable for the treatment of silicon carbide production wastewater, which can reach the first-level standard in the "Integrated Wastewater Discharge Standard" GB8978-1996 after treatment, and can fully recycle the silicon carbide suspended micropowder in the wastewater.
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 |
|---|---|---|---|
| CN2011104296491A CN102515435A (en) | 2011-12-20 | 2011-12-20 | Method for processing silicon carbide industrial wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
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| 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 |