CN106698731A - Biochemical treatment and recycling method of chemical wastewater - Google Patents
Biochemical treatment and recycling method of chemical wastewater Download PDFInfo
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- CN106698731A CN106698731A CN201510531495.5A CN201510531495A CN106698731A CN 106698731 A CN106698731 A CN 106698731A CN 201510531495 A CN201510531495 A CN 201510531495A CN 106698731 A CN106698731 A CN 106698731A
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Abstract
The invention provides a biochemical treatment and recycling method of chemical wastewater. The method comprises steps as follows: (1), a Fenton oxidation reaction is performed in a reaction tank, after pH is regulated to be 5-7, ferrous sulfate and hydrogen peroxide are added to a water sample, concentration of Fe<2+> in the water sample is made to be 2-5 mmol/L, concentration of H2O2 is made to be 5-7 mmol/L, and stirring is performed for 1-8 h; 2), the water sample is mixed with aminated hyper-crosslinked resin, the use amount of the resin is 2%-7% of volume of water, and the materials are stirred and mixed for 1-5 h and left to stand for 1-10 h; 3), solid-liquid separation of resin and water is performed, and effluent obtained after separation can be discharged or directly recycled. The biochemical treatment and recycling method of chemical wastewater has the beneficial effects as follows: two technologies are coupled and for combination use, and under the premise that high-efficiency adsorption and ion exchange action of the resin in follow-up treatment are guaranteed, industrial ferrous sulfate and hydrogen peroxide only accounting for 5%-30% of traditional dosage are required in the Fenton oxidation process, so that the amount of mud is greatly reduced, the probability of hardening is low, cleaning difficulty is reduced, and work load is reduced.
Description
Technical field
The present invention relates to a kind for the treatment of of chemical wastewater biochemical and reuse method.
Background technology
The wastewater discharge of chemical industry is huge, and wherein contains substantial amounts of difficult degradation poisonous and harmful substance,
The common process for being used at present is difficult to efficiently process such waste water.Waste water enters in environment,
Severe contamination is caused, substantial amounts of murder by poisoning organic matter migrates accumulation in nature, directly or indirectly right
Health causes harm.Therefore, substantial amounts of further treatment technique is widely used in strengthening useless to chemical industry
The disposal effect of water bio-chemical effluent, can qualified discharge even can be with Treated sewage reusing.
Conventional further treatment technique includes chemical oxidation, coagulating sedimentation, membrane separation technique, activated carbon
Absorption, resin adsorption technology etc..The each have their own advantage of these methods, while also each have their own shortcoming.
Resin adsorption method is because its adsorption capacity is big, selectivity is high, the advantages of be easy to regeneration highly concentrated organic
The treatment of wastewater from chemical industry is made that tremendous contribution with resource aspect.The exploitation of magnetic resin so that its
The operator scheme of full-mixing type can be applied to, treatment water is greatly strengthen, resin treatment is reduced
Cost, improve its range of application in terms of low concentration wastewater disposal.Love people Lee et al. once researched and developed
Go out a kind of deep treatment method of magnetic acrylic acid series anion exchange resin to chemical wastewater biochemical water outlet
(patent publication No.：CN101905931), the method can effectively remove the COD and colourity in waste water.
But the magnetic acrylate ionomer exchanger resin that the method is used is only capable of by ion exchange to water
Anionic species in body are removed, and there is substantial amounts of apolar substance in wastewater from chemical industry, it is difficult to
Efficiently removal, is only capable of for the COD in water body being reduced to below 80mg/L using the method.Patent is public
The number of opening once disclosed a kind of superhigh cross-linking weak base with dual-use function for the patent document of CN1346708A
The synthetic method of anion exchange resin, the resin is on the polymeric adsorbent surface with high specific surface area
Modified ion group, can adsorb two kinds of modes of action and remove simultaneously by ion exchange and high-specific surface area
Non-polar and polar material in water body, administers in high concentration hard-degraded organic waste water and is obtained with resource
To being widely applied popularization.Under inspiring herein, the magnetic superelevation that this seminar develops amido modification is handed over
Connection composite function resin (Application No. 201310106265.5).However, the processing cost of resin compared with
Height, during to high load wastewater treatment, resource can bring it is substantial amounts of be benefited can offset at it
This is set to, and for the deep purifying of low density wastewater, its recovery value is smaller, therefore, how to reduce
Its processing cost, improves its utilization ratio, is the matter of utmost importance for needing to consider.
With resin adsorption technology as core, corresponding preconditioning technique is increased in its front end, on the one hand may be used
To reduce the treatment load of resin, on the other hand, the difficult removal material in water body can be changed into easily
In the material of Adsorption, the treatment effeciency of resin can not only be improved, moreover it is possible to the use of reinforced resin
Life-span.Fenton oxidation is a kind of common chemical wastewater treatment method, and its treatment effeciency is high, but is passed
The Fenton oxidation of system need to add substantial amounts of reagent, and cost consumption is huge, and a large amount of chemical sludges are easily caused again,
And, many pollutants produce a large amount of intermediate products by can not be degradable after Fenton oxidation,
Its water outlet tends not to reach reuse requirement.And be combined Fenton oxidation and resin adsorption, using resin
Product to Fenton incomplete oxidation is processed, and has not only further purified water quality, while can play
Resin reduces reagent dosage, has widened pH conditions to the absorption advantage of Fenton oxidation intermediate product,
Avoid mutual defect.This technology is based on above thinking, develop it is a kind of based on Fenton oxidation with
Two kinds of technology combination techniques of the magnetic superhigh cross-linking composite function resin absorption based on amido modification are right
Chemical wastewater biochemical water outlet is efficiently treated through and reuse.
The content of the invention
In order to solve the problems of the prior art, the invention provides a kind of chemical wastewater biochemical treatment and
Reuse method, for wastewater from chemical industry present in existing process after biochemical processing process, due to water
Hard-degraded substance is remained in body, the poor problem of its effluent quality, the invention provides a kind of chemical industry
The efficient process and reuse method of wastewater biochemical water outlet, it can effectively remove chemical wastewater biochemical water outlet
In hard-degraded substance, water outlet reach national urban wastewater treatment firm pollutant emission one-level A standards and
Correlative regeneration Water circulation standard, it is adaptable to the advanced treating of waste water and reuse.
The invention provides a kind for the treatment of of chemical wastewater biochemical and reuse method, including step：
(1) Fenton oxidation reaction is carried out in reaction tank, regulation pH value is after 5~7, in water sample
Add ferrous sulfate and hydrogen peroxide so that Fe2+ concentration is 2~5mmol/L, H2O2 concentration in water sample
It is 5~7mmol/L, stirs 1~8 hour；
2) mixed with base hypercrosslinked polymeric resin, the consumption of resin is the 2%~7% of water volume, is stirred
Mix mixing 1~5 hour, stand 1~10 hour；
(3) separation of solid and liquid of resin and water is carried out, the water outlet after separation can discharge or direct reuse.
As a further improvement on the present invention, described base hypercrosslinked polymeric resin is the magnetic of amido modification
Property superhigh cross-linking composite function resin.
As a further improvement on the present invention, also including by step (3) separating obtained resin and regenerated liquid
Mixed, regenerated liquid composition is：NaOH：1wt.%~18wt.%, methyl alcohol：10wt.%~
80wt.%, Huo Zhewei：NaOH：1wt.%~18wt.%, ethanol 50wt.%, resin and regeneration
After liquid mixes 10~200 minutes, 50-70 minutes is stood, isolate resin.
As a further improvement on the present invention so that Fe in water sample2+Concentration is 5mmol/L, H2O2Concentration
It is 7mmol/L, stirs 8 hours；The consumption of resin is the 7% of water volume, stirring mixing 5 hours,
Stand 10 hours.
The beneficial effects of the invention are as follows：(1) ferrous sulfate and hydrogen peroxide dosage in traditional Fenton oxidation
Greatly, therefore iron cement amount is big, it is easily hardened, it is difficult to clear up, and the present invention is using two kinds of technologies coupling combinations,
On the premise of the efficient absorption of resin in ensureing subsequent treatment and ion exchange, Fenton oxidation mistake
Industrial ferrous sulfate and hydrogen peroxide only need the 5~30% of traditional dosage, therefore mud amount to subtract significantly in journey
It is few, hardened, reduction cleaning difficulty is difficult, reduce work load；
(2) traditional Fenton oxidation reaction effect when pH value is 3 is optimal, it is necessary to consume substantial amounts of
Acid reagent, and due to being that two kinds of technologies are combined in technique of the invention, pH value need to be only controlled 5~7
Optimum efficiency is can reach, the use of acid reagent is reduced, cost is reduced；
(3) the single resin adsorption treatment technology of tradition there is also resin demand greatly, adsorb easy saturation,
The shortcomings of regenerating frequent, desorption liquid measure is big, in the present invention, because waste water is by Fenton oxidation, gives up
Material physico-chemical property in water changes, it is easy to the absorption and ion exchange of composite function resin.
Compared with traditional single resin adsorption treatment technology, impact of the waste water to resin is alleviated, reduce tree
The load of fat so that resin demand is reduced, use time extension, regeneration times are reduced, corresponding de-
Attached liquid amount also greatly reduces；
(4) chemical wastewater biochemical water outlet is processed using the method for the present invention, by after coupling technique treatment
Water quality index be：COD20~40mg/L, BOD54~10mg/L, TOC8~15mg/L,
UV2540.2~0.6,10~20 degree of colourity, 2~5NTU of turbidity, petroleum-type 0.2~
0.9mg/L, 500~900mg/L of total dissolved solid, anion surfactant 0.1~
0.5mg/L, meets national urban wastewater treatment firm pollutant emission one-level A and municipal sewage again
Make profits with serial (urban reclaimed water water quality GB/T18920-2002, water for scenic environment use water quality
GBT18921-2002, groundwater recharge water quality GBT19772-2005, industry water standard
GB/T19923-2005, farmland irrigation water water quality GB20922-2007) relevant criterion, water quality inspection
Survey method is detected according to the National Standard Method of above-mentioned standard defined.Water outlet after treatment can direct reuse,
Greatly alleviate shortage of water resources problem；
(5) present invention process is simple, and medicine dosage is small, with low cost, it is easy to operate, and water quality
Standard is high, stable effluent quality, excellent.
Specific embodiment
The invention discloses a kind for the treatment of of chemical wastewater biochemical and reuse method, it is characterised in that：Including
Step：
(1) Fenton oxidation reaction is carried out in reaction tank, regulation pH value is after 5~7, in water sample
Add ferrous sulfate and hydrogen peroxide so that Fe2+ concentration is 2~5mmol/L, H2O2 concentration in water sample
It is 5~7mmol/L, stirs 1~8 hour；
2) mixed with base hypercrosslinked polymeric resin, the consumption of resin is the 2%~7% of water volume, is stirred
Mix mixing 1~5 hour, stand 1~10 hour；
(3) separation of solid and liquid of resin and water is carried out, the water outlet after separation can discharge or direct reuse.
As a further improvement on the present invention, described base hypercrosslinked polymeric resin is the magnetic of amido modification
Property superhigh cross-linking composite function resin.
As a further improvement on the present invention, also including by step (3) separating obtained resin and regenerated liquid
Mixed, regenerated liquid composition is：NaOH：1wt.%~18wt.%, methyl alcohol：10wt.%~
80wt.%, Huo Zhewei：NaOH：1wt.%~18wt.%, ethanol 50wt.%, resin and regeneration
After liquid mixes 10~200 minutes, 50-70 minutes is stood, isolate resin.
As a further improvement on the present invention so that Fe in water sample2+Concentration is 5mmol/L, H2O2Concentration
It is 7mmol/L, stirs 8 hours；The consumption of resin is the 7% of water volume, stirring mixing 5 hours,
Stand 10 hours.
Above content is that to combine specific preferred embodiment made for the present invention further specifically
It is bright, it is impossible to assert that specific implementation of the invention is confined to these explanations.For technology belonging to the present invention
For the those of ordinary skill in field, without departing from the inventive concept of the premise, if can also make
Simple deduction or replace are done, protection scope of the present invention should be all considered as belonging to.
Claims (4)
1. a kind of chemical wastewater biochemical is processed and reuse method, it is characterised in that：Including step：
(1) Fenton oxidation reaction is carried out in reaction tank, regulation pH value is after 5~7, to be thrown in water sample
Plus ferrous sulfate and hydrogen peroxide so that Fe in water sample2+Concentration is 2~5mmol/L, H2O2Concentration is
5~7mmol/L, stirs 1~8 hour；
2) mixed with base hypercrosslinked polymeric resin, the consumption of resin is the 2%~7% of water volume, is stirred
Mix mixing 1~5 hour, stand 1~10 hour；
(3) separation of solid and liquid of resin and water is carried out, the water outlet after separation can discharge or direct reuse.
2. chemical wastewater biochemical according to claim 1 is processed and reuse method, it is characterised in that：Institute
The base hypercrosslinked polymeric resin stated is the magnetic superhigh cross-linking composite function resin of amido modification.
3. chemical wastewater biochemical according to claim 1 is processed and reuse method, it is characterised in that：Also
Including step (3) separating obtained resin is mixed with regenerated liquid, regenerated liquid composition is：Hydrogen
Sodium oxide molybdena：1wt.%~18wt.%, methyl alcohol：10wt.%~80wt.%, Huo Zhewei：NaOH：
1wt.%~18wt.%, ethanol 50wt.%, it is quiet after resin mixes 10~200 minutes with regenerated liquid
Put 50-70 minutes, isolate resin.
4. chemical wastewater biochemical according to claim 1 is processed and reuse method, it is characterised in that：Make
Obtain Fe in water sample2+Concentration is 5mmol/L, H2O2Concentration is 7mmol/L, is stirred 8 hours；Resin
Consumption for water volume 7%, stirring mixing 5 hours, stand 10 hours.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510531495.5A CN106698731A (en) | 2015-08-26 | 2015-08-26 | Biochemical treatment and recycling method of chemical wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510531495.5A CN106698731A (en) | 2015-08-26 | 2015-08-26 | Biochemical treatment and recycling method of chemical wastewater |
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| CN106698731A true CN106698731A (en) | 2017-05-24 |
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| CN201510531495.5A Pending CN106698731A (en) | 2015-08-26 | 2015-08-26 | Biochemical treatment and recycling method of chemical wastewater |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109205832A (en) * | 2018-09-21 | 2019-01-15 | 西安蓝晓科技新材料股份有限公司 | A kind of processing method of caprolactam ammonia deuteration production technology waste water |
| CN109160660B (en) * | 2018-09-20 | 2021-08-03 | 浙江三和食品科技有限公司 | Method for recovering glycolic acid from sodium carboxymethylcellulose production wastewater |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101265001A (en) * | 2008-04-23 | 2008-09-17 | 台华特种纺织（嘉兴）有限公司 | Reclaiming treatment method for hydraulic loom waste water |
| CN103435181A (en) * | 2013-08-19 | 2013-12-11 | 南京大学 | High-efficiency treatment and recycling method of chemical industry wastewater and biochemical effluent |
| CN104098206A (en) * | 2014-07-25 | 2014-10-15 | 宁波清水源水务科技有限公司 | Method for advanced treatment and reuse of printing and dyeing wastewater pre-processed by macroporous resin |
-
2015
- 2015-08-26 CN CN201510531495.5A patent/CN106698731A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101265001A (en) * | 2008-04-23 | 2008-09-17 | 台华特种纺织（嘉兴）有限公司 | Reclaiming treatment method for hydraulic loom waste water |
| CN103435181A (en) * | 2013-08-19 | 2013-12-11 | 南京大学 | High-efficiency treatment and recycling method of chemical industry wastewater and biochemical effluent |
| CN104098206A (en) * | 2014-07-25 | 2014-10-15 | 宁波清水源水务科技有限公司 | Method for advanced treatment and reuse of printing and dyeing wastewater pre-processed by macroporous resin |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109160660B (en) * | 2018-09-20 | 2021-08-03 | 浙江三和食品科技有限公司 | Method for recovering glycolic acid from sodium carboxymethylcellulose production wastewater |
| CN109205832A (en) * | 2018-09-21 | 2019-01-15 | 西安蓝晓科技新材料股份有限公司 | A kind of processing method of caprolactam ammonia deuteration production technology waste water |
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Application publication date: 20170524 |