CN102976521B - Decomposition treatment technology for nonbiodegradable chemical compounds in papermaking wastewater - Google Patents
Decomposition treatment technology for nonbiodegradable chemical compounds in papermaking wastewater Download PDFInfo
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- CN102976521B CN102976521B CN201210499294.8A CN201210499294A CN102976521B CN 102976521 B CN102976521 B CN 102976521B CN 201210499294 A CN201210499294 A CN 201210499294A CN 102976521 B CN102976521 B CN 102976521B
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- 239000002351 wastewater Substances 0.000 title claims abstract description 17
- 150000001875 compounds Chemical class 0.000 title claims abstract description 11
- 238000000354 decomposition reaction Methods 0.000 title claims abstract description 10
- 238000005516 engineering process Methods 0.000 title abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 239000000126 substance Substances 0.000 claims abstract description 12
- 239000006228 supernatant Substances 0.000 claims abstract description 4
- 230000016615 flocculation Effects 0.000 claims description 19
- 238000005189 flocculation Methods 0.000 claims description 19
- 239000002131 composite material Substances 0.000 claims description 16
- 239000007864 aqueous solution Substances 0.000 claims description 15
- 239000010893 paper waste Substances 0.000 claims description 14
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 8
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 8
- 230000015556 catabolic process Effects 0.000 claims description 7
- 238000006731 degradation reaction Methods 0.000 claims description 7
- 230000003389 potentiating effect Effects 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 4
- 125000002091 cationic group Chemical group 0.000 claims description 4
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 4
- 239000011790 ferrous sulphate Substances 0.000 claims description 4
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 4
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 4
- 229920002401 polyacrylamide Polymers 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 239000008394 flocculating agent Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 241000196324 Embryophyta Species 0.000 description 4
- 239000013049 sediment Substances 0.000 description 4
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 238000001311 chemical methods and process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 150000004676 glycans Chemical class 0.000 description 2
- 239000010842 industrial wastewater Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229920001282 polysaccharide Polymers 0.000 description 2
- 239000005017 polysaccharide Substances 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000000703 anti-shock Effects 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 239000007857 degradation product Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000009284 supercritical water oxidation Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
- -1 xylogen Substances 0.000 description 1
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to a decomposition treatment device for nonbiodegradable chemical compounds in papermaking wastewater and a decomposition treatment technological process for nonbiodegradable chemical compounds in papermaking wastewater. The basic technological process comprises the following steps: charging secondarily and biochemically treated papermaking wastewater into a water storage pond, adjusting the pH value (6.5-10.0) in the water storage pond, transporting to a reaction container through a booster pump to be reacted with compound powerful effect agent and compound flocculating agent, and flowing into an air floatation machine after reaction to separate mud from water, wherein liquid supernatant effluent of the air floatation machine can be discharged or recycled. According to the decomposition treatment technological process, the nonbiodegradable substances in the wastewater can be effectively treated, and the whole technology has the characteristics of being simple to operate and control, stable in system running, capable of being used as soon as possible after being invested, free from long-time debugging, and higher in COD (chemical oxygen demand) removal rate and chroma removal rate.
Description
Technical field:
The invention belongs to environmental engineering technical field of waste water processing, be specifically related to decomposing processor and the flow process of difficult degradation compound in a kind of paper waste, be applied to the processing of paper waste.
Technical background:
Paper-making industry is traditional water rich and influential family, is also one of important source of pollution that cause water pollution.Along with expanding economy, enterprise faces the problem of shortage of water resources, scarcity of raw material day by day, and on the other hand, water pollutes also more and more serious.At present, the first place that China's paper-making industrial waste water quantity discharged and COD quantity discharged all occupy all types of industries quantity discharged, paper industry is serious to the pollution of water surrounding, its matter of utmost importance that still matter of utmost importance ，Ye Shi China trade effluent of China's industrial pollution caused by paper manufacturing control carries out processing up to standard.
Paper-making industrial waste water contains a large amount of electronegative multi-chemicals such as xylogen, fiber fines and filler, make COD, BOD, chroma pollution load greatly, the ratio of BOD and COD is between 0.20～0.35, biodegradability is poor, rely on conventional biochemistry and materialization processing to be difficult to national < < pulp and paper industry pollution discharge standard > > (GB3544-2008) requirement that reaches new, therefore, selecting appropriate depth processing mode is the key that paper waste is processed.
Paper waste advanced treatment is exactly that secondary biochemical treatment water outlet is further processed with physics, chemistry or biological process again, remove dissolubility pollutant and suspended substance that paper waste is not removed in second-stage treatment, to reach stricter emission request, even can realize the reuse of water.Conventional paper waste degree of depth water technology has biochemical treatment, materialization processing and new technology etc. at present.Biochemical treatment mainly comprises the activated sludge process of microbial immobilized technology, strengthening and biomembrance process etc., but its running cost is low affected by difficult degradation product in waste water, and effluent quality is extremely unstable.What materialization processing research was more is flocculation sediment, smelly catalyzed oxidation, membrane technique and electrochemical treatment etc., wherein in high, the smelly catalyzed oxidation of membrane technique and electrochemical treatment cost, ozone utilization rate is low, only have flocculation sediment running cost relatively low and move relatively stable, but when front end secondary treatment yielding water water quality is poor, flocculation sediment is difficult to meet emission standard requirement.Aspect new technology, as wet type air oxidation, supercritical Water Oxidation Technology, photochemical catalytic oxidation and magnetic separating treatment etc., still difficulty is put to application at present.
Summary of the invention:
Object of the present invention provides the decomposition processing process of difficult degradation compound in a kind of paper waste; Can effectively process the hard-degraded substance in waste water, and whole technique has operation and control simply, system operates steadily, and can use, without long debugging after input at once; The feature higher to the clearance of COD, clearance and colourity.
Technical scheme of the present invention is: described technique is to be connected in sequence by the equipment that includes tank, topping-up pump, reaction vessel and air floatation machine; By air floatation machine supernatant liquor water outlet out, can be arranged outward or reuse.
Waste water by pH regulator, is guaranteed the reliable and stable of concentrated and filter effect before highly effective reaction splitter.Optimal ph scope is 6.5 ~ 10.0.In reaction vessel, add the composite flocculation agent aqueous solution and the composite intensified agent aqueous solution;
The composite flocculation agent aqueous solution is the aqueous solution being mixed with by polymerize aluminum chloride and cationic polyacrylamide, and wherein polymerize aluminum chloride mass content is that (2-10) %, cationic polyacrylamide mass content are (1-6) %.
The potent dose of aqueous solution is the aqueous solution being mixed with by hydrogen peroxide and ferrous sulfate, and wherein hydrogen peroxide mass content is that (10-20) %, ferrous sulfate mass content are (20-40) %;
Contriver finds by long-term practice and repetition test many times, and in waste water per ton, the add-on of the composite flocculation agent aqueous solution and the composite intensified agent aqueous solution is respectively 10-50g and 5-50g, can reach good clean effect.
The present invention is low to waste water strong adaptability, initial cost, is paper-making effluent treating process simple, efficient economy.Xylogen, fiber in paper waste are have to good decomposition effect.
This treatment process, by utilizing difficult degradation pollutent and colourity material in potent dose of oxidation degrading waste water, reduces water outlet COD value.The composite flocculation agent that flocculation treatment adopts the present invention to select especially, enhanced flocculation effect, raising flocculation efficiency; Thereby make hard-degraded substance in waste water as xylogen, Mierocrystalline cellulose etc. and polysaccharide generation condensation reaction.After this reaction completes, can make xylogen in waste water, Mierocrystalline cellulose become the hydrophobic property of high molecular together with polysaccharide and separate out and flocculation sediment, reaching the object of removal.
On tank of the present invention, be connected with alkali throwing device.
On reaction vessel, be connected with the chemicals dosing plant of composite flocculation agent and the chemicals dosing plant of potent dose.
Characteristic and advantage of the present invention:
1. the present invention adopts physico-chemical process to process, and the ability of anti-shock loading (COD concentration fluctuates widely) is strong, and no matter whether the secondary biochemical treatment water outlet COD of leading portion fluctuates greatlyr, and this device is energy stabilizing treatment all.
2. the present invention adopts physico-chemical process to process, and starts soon, and operation is controlled simple, can use, without long debugging after input at once.
3. the present invention is to influent COD clearance >=60%, SS clearance >=90%, chroma removal rate >=60%.Waste water after processing can direct reuse to production line.So both greatly reduced new water consumption and wastewater discharge (reducing wastewater treatment expense and effluent charge), significant to the energy-saving and emission-reduction of paper industry.
Accompanying drawing explanation
Accompanying drawing is process flow sheet of the present invention.
Embodiment:
Paper mill, Hunan is because black liquid discharging control is unstable, and Sewage treatment systems COD impact load is large, and after secondary biochemical treatment, the colourity of water outlet, COD are difficult to stably reaching standard discharge.Adopt the equipment for the treatment of process of the present invention that the equipment that includes tank, topping-up pump, reaction vessel and air floatation machine is connected in sequence; On tank, be connected with alkali throwing device; On reaction vessel, be connected with the chemicals dosing plant of flocculation agent and the chemicals dosing plant of potent dose.The technical process having is (referring to Fig. 1): paper waste enters tank after secondary biochemical treatment, after regulating pH value to be 6.5 ~ 10.0 in tank, by topping-up pump, be delivered in reaction vessel, and react with composite intensified agent and composite flocculation agent, after reaction, flow into air floatation machine and carry out mud-water separation.The supernatant liquor water outlet of air floatation machine can be arranged outward or reuse.And after adopting treatment process of the present invention to process, water quality analysis data are as following table:
After this paper mill secondary biochemical, water outlet cannot reach < < pulp and paper industry pollution discharge standard > > GB3544-2008 requirement, but used after present method the qualified discharge that water outlet can be continual and steady.
Claims (3)
1. the decomposition processing process of difficult degradation compound in a paper waste, it is characterized in that, described technique is that paper waste enters tank after secondary biochemical treatment, in tank, regulate after pH value, by topping-up pump, be delivered in reaction vessel, and react with composite intensified agent and composite flocculation agent, after reaction, flow into air floatation machine and carry out mud-water separation; By air floatation machine supernatant liquor out, carry out outer row or reuse; The pH value adding in alkali adjusting tank is 6.5 ~ 10.0; In reaction vessel, add the composite flocculation agent aqueous solution and the composite intensified agent aqueous solution; In waste water per ton, the composite flocculation agent aqueous solution and the water-soluble add-on of composite intensified agent are respectively 10-50g and 5-50g;
The composite flocculation agent aqueous solution is the aqueous solution being mixed with by polymerize aluminum chloride and cationic polyacrylamide, and wherein polymerize aluminum chloride mass content is that 2-10%, cationic polyacrylamide mass content are 1-6%;
The potent dose of aqueous solution is the aqueous solution being mixed with by hydrogen peroxide and ferrous sulfate, and wherein hydrogen peroxide mass content is that 10-20%, ferrous sulfate mass content are 20-40%.
2. the decomposition processing process of difficult degradation compound in a kind of paper waste according to claim 1, is characterized in that, is connected with alkali throwing device on tank.
3. the decomposition processing process of difficult degradation compound in a kind of paper waste according to claim 1, is characterized in that, is connected with the chemicals dosing plant of flocculation agent and the chemicals dosing plant of potent dose on reaction vessel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210499294.8A CN102976521B (en) | 2012-11-29 | 2012-11-29 | Decomposition treatment technology for nonbiodegradable chemical compounds in papermaking wastewater |
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| CN201210499294.8A CN102976521B (en) | 2012-11-29 | 2012-11-29 | Decomposition treatment technology for nonbiodegradable chemical compounds in papermaking wastewater |
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| CN102976521B true CN102976521B (en) | 2014-02-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106277629A (en) * | 2016-08-31 | 2017-01-04 | 浙江兴舟纸业有限公司 | A kind of process technique of paper waste |
| CN106517661B (en) * | 2016-12-03 | 2019-07-12 | 福建众辉环保设备有限公司 | A kind of papermaking wastewater treatment system |
| CN110563282A (en) * | 2019-10-10 | 2019-12-13 | 上海玉畔环保设备有限公司 | Treatment system and treatment method for amino resin production wastewater |
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| CN1238282C (en) * | 2003-12-31 | 2006-01-25 | 马晓鸥 | Treatment technology of emulsion contained spent water |
| CN100494098C (en) * | 2007-03-09 | 2009-06-03 | 华南理工大学 | Fenton and air-float integral water treating method |
| JP2011050900A (en) * | 2009-09-03 | 2011-03-17 | Fuji Xerox Co Ltd | Water treatment apparatus and water treatment method |
| CN101786753B (en) * | 2010-03-11 | 2012-09-05 | 中国科学院生态环境研究中心 | Advanced waste water treatment method |
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Denomination of invention: Decomposition treatment technology for nonbiodegradable chemical compounds in papermaking wastewater Effective date of registration: 20190612 Granted publication date: 20140226 Pledgee: Bank of Communications Co., Ltd. Hunan Branch Pledgor: Hunan Xiangniu Environment Protecting Industry Co., Ltd. Registration number: 2019430000054 |
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Date of cancellation: 20201123 Granted publication date: 20140226 Pledgee: Bank of Communications Co.,Ltd. Hunan Branch Pledgor: HUNAN XIANGNIU ENVIRONMENTAL PROTECTION INDUSTRY Co.,Ltd. Registration number: 2019430000054 |
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Denomination of invention: A decomposition process of refractory compounds in Papermaking Wastewater Effective date of registration: 20201229 Granted publication date: 20140226 Pledgee: Bank of Communications Co.,Ltd. Hunan Branch Pledgor: HUNAN XIANGNIU ENVIRONMENTAL PROTECTION INDUSTRY Co.,Ltd. Registration number: Y2020980010091 |
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Date of cancellation: 20220411 Granted publication date: 20140226 Pledgee: Bank of Communications Co.,Ltd. Hunan Branch Pledgor: HUNAN XIANGNIU ENVIRONMENTAL PROTECTION INDUSTRY CO.,LTD. Registration number: Y2020980010091 |