CN108033631A - One kind contains high salinity sodium carboxymethylcellulose waste water treatment process - Google Patents
One kind contains high salinity sodium carboxymethylcellulose waste water treatment process Download PDFInfo
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- CN108033631A CN108033631A CN201711233372.9A CN201711233372A CN108033631A CN 108033631 A CN108033631 A CN 108033631A CN 201711233372 A CN201711233372 A CN 201711233372A CN 108033631 A CN108033631 A CN 108033631A
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- high salinity
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention discloses one kind to contain high salinity sodium carboxymethylcellulose waste water treatment process, comprises the following steps：S1, will contain high salinity sodium carboxymethylcellulose waste water adjusted pond and electrodialysis process successively；S2, neutralisation treatment；S3, iron-carbon micro-electrolysis reaction；S4, primary precipitation, supernatant flow to hydrolysis acidification pool；S5, hydrolysis acidification acidification, then it flow to level-one contact-oxidation pool；S6, the Aerobic Process for Treatment through level-one contact-oxidation pool, two-stage biological contact oxidation pond, then flow to secondary settling tank successively；S7, two-stage precipitation；S8, add the ultimate precipitation of PAC and PAM progress, and the standard that supernatant reaches is recycled or discharged, and completion contains high salinity sodium carboxymethylcellulose waste water treatment process.Waste water treatment process proposed by the present invention, effectively reduces content of hydrochloric acid, and the hydrochloric acid recycled has economic value, and low to equipment corrosion degree, process, disposal ability is strong, and cost is low, suitable for highly-saline cellulose waste water.
Description
Technical field
The present invention relates to technical field of waste water processing, more particularly to one kind to contain high salinity sodium carboxymethylcellulose wastewater treatment
Technique.
Background technology
Sodium carboxymethylcellulose belongs to high polymerizable compound, and chemical molecular is differed thousands of to million.Carboxymethyl cellulose
Sodium has the title of industrial " monosodium glutamate ", is a kind of thickener, binding agent, is widely used in the industries such as food, daily use chemicals, medicine.Waste water master
To contain cellulose, CMC, monoxone, sodium chloride, methanol etc., such waste water often uses the processing work of " physico-chemical process+biochemical process "
Skill.With the high speed development of science and technology, wastewater processing technology makes rapid progress, and substantial amounts of cellulose, CMC etc. are contained in cellulose waste water
Macromolecular substances, biodegradability is low, organic matter itself is difficult to biodegradation, along with substantial amounts of salinity so that the processing of waste water
Difficulty is extremely difficult.It is more using " pretreatment+bioanalysis " processing work for the treatment process containing high salinity sodium cellulosate waste water
Skill, in addition preprocess method also have light electrolysis, coagulant sedimentation, Fenton advanced oxidation processes etc..In existing technology for
The technique for the processing that the processing of the waste water salinity is post-processed using multiple-effect evaporation, concentration, concentrate more.Waste water by pretreatment and
Enter biochemical system after sanitary sewage dilution, bioanalysis is generally using up-flow anaerobic sludge blanket, SBR, catalytic oxidation, BAF etc.
Technique.Still need into biochemical reaction to be inoculated with compound salt tolerant strain after pretreatment, can just cause system from water quality impact and
Fluctuation.Due to a large amount of presence of salinity, wastewater dilution reduces pollutant concentration and causes capital expenditure big, if not diluting, waste water
It is relatively low to handle load, also results in and originally increases, while the cost for wastewater treatment is high.
At present, do not have more targetedly scheme for the high concentration salinity contained in waste water, HCl recycling reductions are not processed into
Sheet and Cl-Scheme of the problems such as pollution is corroded without compared with system optimization.Such as CMC waste liquor PHs as low as 0.25, conventional solution is located in advance
It is even alkaline to manage flocculation sediment, biochemical treatment requirement pH neutrality, water outlet requirement pH value only adds alkali neutralization waste water between 6~9
Chemicals treatment expense can reach 30~2500 yuan of ton water and differ, processing cost is high.Salt content will suppress more than 0.5% in sewage
The growth and breeding of microorganism, the Cl in waste water-Though can remove a part by pretreatment, removal rate is not high, still to micro- life
Thing has stronger inhibitory action, Cl-Also there is very strong corrosivity, common metal material such as carbon steel, common stainless steel are all
The corrosion of chlorion cannot be resisted, if without pre-processing, the service life of equipment can be substantially reduced.Existed based on the prior art
Deficiency, the present invention propose one kind contains high salinity sodium carboxymethylcellulose waste water treatment process.
The content of the invention
The purpose of the present invention is to solve shortcoming existing in the prior art, and the one kind proposed contains high salinity carboxymethyl
Sodium cellulosate waste water treatment process.
One kind contains high salinity sodium carboxymethylcellulose waste water treatment process, comprises the following steps：
S1, electrodialysis：High salinity sodium carboxymethylcellulose waste water will be contained to be passed through in regulating reservoir, and boosted pump is delivered to electricity
In electrodialysis apparatus, then applying direct current electric field, electrodialysis process is carried out to waste water；
S2, neutralisation treatment：Waste water after electrodialysis process adds pH adjusting agent, adjusts pH value, then flow to Fe-C certainly
Reaction tank；
S3, iron-carbon micro-electrolysis：Waste water is transferred in reaction tank A after Fe-C reaction tanks carry out iron-carbon micro-electrolysis reaction；
S4, primary precipitation：PAC and PAM is added into reaction tank A, is transferred to after mixing in primary sedimentation tank and carries out primary sink
Form sediment, supernatant flow to hydrolysis acidification pool via water distributor；
S5, hydrolysis acidification processing：Acidification is carried out in hydrolysis acidification pool, then flow to level-one contact-oxidation pool certainly；
S6, catalytic oxidation processing：First time Aerobic Process for Treatment is carried out in level-one contact-oxidation pool, then flow to Secondary contact certainly
Second of Aerobic Process for Treatment is carried out in oxidation pond, then flow to secondary settling tank；
S7, two-stage precipitation：Two-stage precipitation is carried out in secondary settling tank, supernatant is flow in reaction tank B certainly again；
S8, eventually precipitation：PAC and PAM is added into reaction tank B, is transferred to after mixing and ultimate precipitation is carried out in final deposition pool,
The standard that supernatant reaches is recycled or discharged, and completion contains high salinity sodium carboxymethylcellulose waste water treatment process.
Preferably, the hydrolysis reactor used in the hydrolysis acidification pool is HUSB reactors, and the water distribution in step S4
Device matches with HUSB reactors.
Preferably, agitating device uses up-flow structure in the hydrolysis acidification pool.
Preferably, the hydrolysis acidification pool uses point-to-point water distribution manner.
Preferably, salt tolerant strain is targetedly added in the hydrolysis acidification processing procedure.
Preferably, in the wastewater treatment process, it is also necessary to Fe-C reaction tanks, reaction tank A, level-one contact-oxidation pool,
Oxygen is continually fed into two-stage biological contact oxidation pond and reaction tank B.
Preferably, the sludge that the primary sedimentation tank, secondary settling tank and final deposition pool produce is discharged into sludge-tank, then by the dirt in sludge-tank
It is carried out dehydrating after mud concentration through being pumped into filter press, the mud cake after dehydration is transported outward again
Compared with prior art, beneficial effects of the present invention：
1st, by salinity and organic matter etc., other pollutants are respectively processed, and first carry out salinity processing, are reduced between the two
Influence each other, waste water items contamination index is reduced to discharge standard in conjunction with both technical characterstics, reaches higher place
Manage effect；
2nd, electrodialysis process is used to waste water, the salt conversion hydrochloric acid in waste water can be recycled, and time of hydrochloric acid
High income, has certain economic benefit, at the same when can also reduce neutralization pH adjusting agent dosing cost, save processing cost
3rd, salinity significantly reduces in the waste water after electrodialysis process, can effectively reduce in waste water salinity to subsequent biochemical
The influence that process produces, improves wastewater treatment load；
4th, pretreatment stage uses iron-carbon micro-electrolysis, improves wastewater biodegradability, and hydrolysis acidification pool uses point-to-point water distribution
Mode, makes water distribution more uniform, biological contact reaction is more efficient, it may be necessary to targetedly adds salt tolerant strain, avoids
Salinity causes biochemical system to routed situation, it is ensured that stable effluent quality；
5th, the production water cycle length of waste water treatment process proposed by the present invention, little power consumption, can continue desalination, without carrying out again
Raw processing, required floor space is small, small investment, is affected by the external environment less, and the degree of automation is high, and capital construction cost is low, right
The extent of corrosion of equipment is low, the service life length of equipment；
6th, the treatment process is reliable, and disposal ability is strong, advantage of lower cost, suitable for highly-saline cellulose waste water and right
Pollutants removal rate is high, and stable water outlet, treatment effect can reach Sewage Water Emissions standard limit i.e. DB4426-2001 second
Period secondary discharge standard.
Brief description of the drawings
Fig. 1 is a kind of flow chart containing high salinity sodium carboxymethylcellulose waste water treatment process proposed by the present invention.
Embodiment
The present invention is made with reference to specific embodiment further to explain.
Embodiment
With reference to Fig. 1, one kind proposed by the present invention contains high salinity sodium carboxymethylcellulose waste water treatment process, including following step
Suddenly：
S1, electrodialysis：High salinity sodium carboxymethylcellulose waste water will be contained to be passed through in regulating reservoir, and boosted pump is delivered to electricity
In electrodialysis apparatus, then applying direct current electric field, electrodialysis process is carried out to waste water；
S2, neutralisation treatment：Waste water after electrodialysis process adds pH adjusting agent, adjusts pH value, then flow to Fe-C certainly
Reaction tank；
S3, iron-carbon micro-electrolysis：Waste water is transferred in reaction tank A after Fe-C reaction tanks carry out iron-carbon micro-electrolysis reaction；
S4, primary precipitation：PAC and PAM is added into reaction tank A, is transferred to after mixing in primary sedimentation tank and carries out primary sink
Form sediment, supernatant flow to hydrolysis acidification pool via water distributor；
S5, hydrolysis acidification processing：Acidification is carried out using point-to-point water distribution manner in hydrolysis acidification pool, and is hydrolyzed
The hydrolysis reactor used in acidification pool is HUSB reactors, and HUSB reactors match with water distributor, make in hydrolysis acidification pool
Agitating device uses up-flow structure, and targetedly adds salt tolerant strain, and the waste water after hydrolysis acidification is handled is again
From flowing to level-one contact-oxidation pool；
S6, catalytic oxidation processing：First time Aerobic Process for Treatment is carried out in level-one contact-oxidation pool, then flow to Secondary contact certainly
Second of Aerobic Process for Treatment is carried out in oxidation pond, then flow to secondary settling tank；
S7, two-stage precipitation：Two-stage precipitation is carried out in secondary settling tank, supernatant is flow in reaction tank B certainly again；
S8, eventually precipitation：PAC and PAM is added into reaction tank B, is transferred to after mixing and ultimate precipitation is carried out in final deposition pool,
The standard that supernatant reaches is recycled or discharged, and completion contains high salinity sodium carboxymethylcellulose waste water treatment process.
In the present invention, in wastewater treatment process, it is also necessary to Fe-C reaction tanks, reaction tank A, level-one contact-oxidation pool,
Oxygen is continually fed into two-stage biological contact oxidation pond and reaction tank B；The sludge that primary sedimentation tank, secondary settling tank and final deposition pool produce is discharged into dirt
Mud sump, then will be carried out dehydrating after the sludge condensation in sludge-tank through being pumped into filter press, the mud cake after dehydration is outer again
Fortune.
Using proposed by the present invention sour to certain plant fiber element class containing high salinity sodium carboxymethylcellulose waste water treatment process
Sodium carboxymethylcellulose waste water caused by washing is handled, and the content of hydrochloric acid is examined in the waste water before and after electrodialysis process
Survey, and calculate the rate of recovery of hydrochloric acid after electrodialysis process, it is processed by the invention after measured after waste water in the rate of recovery of hydrochloric acid be
90%, then the waste water after processing is detected, waste water of the results show after treatment process proposed by the present invention processing reaches
Sewage Water Emissions standard limit, that is, DB4426-2001 the second period secondary discharge standards.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. one kind contains high salinity sodium carboxymethylcellulose waste water treatment process, it is characterised in that comprises the following steps：
S1, electrodialysis：High salinity sodium carboxymethylcellulose waste water will be contained to be passed through in regulating reservoir, and boosted pump is delivered to electrodialysis
In device, then applying direct current electric field, electrodialysis process is carried out to waste water；
S2, neutralisation treatment：Waste water after electrodialysis process adds pH adjusting agent, adjusts pH value, then react from Fe-C is flow to
Pond；
S3, iron-carbon micro-electrolysis：Waste water is transferred in reaction tank A after Fe-C reaction tanks carry out iron-carbon micro-electrolysis reaction；
S4, primary precipitation：PAC and PAM is added into reaction tank A, is transferred to after mixing and primary precipitation is carried out in primary sedimentation tank, on
Clear liquid flow to hydrolysis acidification pool via water distributor；
S5, hydrolysis acidification processing：Acidification is carried out in hydrolysis acidification pool, then flow to level-one contact-oxidation pool certainly；
S6, catalytic oxidation processing：First time Aerobic Process for Treatment is carried out in level-one contact-oxidation pool, then flow to two-stage biological contact oxidation certainly
Second of Aerobic Process for Treatment is carried out in pond, then flow to secondary settling tank；
S7, two-stage precipitation：Two-stage precipitation is carried out in secondary settling tank, supernatant is flow in reaction tank B certainly again；
S8, eventually precipitation：PAC and PAM is added into reaction tank B, is transferred to after mixing and ultimate precipitation, supernatant is carried out in final deposition pool
The standard that liquid reaches is recycled or discharged, and completion contains high salinity sodium carboxymethylcellulose waste water treatment process.
2. one kind according to claim 1 contains high salinity sodium carboxymethylcellulose waste water treatment process, it is characterised in that institute
It is HUSB reactors to state the hydrolysis reactor used in hydrolysis acidification pool, and the water distributor in step S4 matches with HUSB reactors
Set.
3. one kind according to claim 1 contains high salinity sodium carboxymethylcellulose waste water treatment process, it is characterised in that institute
State agitating device in hydrolysis acidification pool and use up-flow structure.
4. one kind according to claim 1 contains high salinity sodium carboxymethylcellulose waste water treatment process, it is characterised in that institute
State hydrolysis acidification pool and use point-to-point water distribution manner.
5. one kind according to claim 1 contains high salinity sodium carboxymethylcellulose waste water treatment process, it is characterised in that institute
State and salt tolerant strain is targetedly added in hydrolysis acidification processing procedure.
6. one kind according to claim 1 contains high salinity sodium carboxymethylcellulose waste water treatment process, it is characterised in that institute
State in wastewater treatment process, it is also necessary to Fe-C reaction tanks, reaction tank A, level-one contact-oxidation pool, two-stage biological contact oxidation pond and
Oxygen is continually fed into reaction tank B.
7. one kind according to claim 1 contains high salinity sodium carboxymethylcellulose waste water treatment process, it is characterised in that institute
State primary sedimentation tank, the sludge that secondary settling tank and final deposition pool produce is discharged into sludge-tank, then by after the sludge condensation in sludge-tank through being pumped into
Filter press is carried out dehydrating, and the mud cake after dehydration is transported outward again.
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| CN201711233372.9A CN108033631A (en) | 2017-11-30 | 2017-11-30 | One kind contains high salinity sodium carboxymethylcellulose waste water treatment process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110510827A (en) * | 2019-09-12 | 2019-11-29 | 江苏蓝必盛化工环保股份有限公司 | The recycling treatment system and processing method of sodium carboxymethylcellulose production waste water |
| CN112707585A (en) * | 2020-12-03 | 2021-04-27 | 安徽森淼实业有限公司 | Recycling process of hydroxypropyl methyl cellulose production wastewater |
| CN114291981A (en) * | 2022-02-11 | 2022-04-08 | 贵州中车绿色环保有限公司 | Red mud leachate biochemical treatment system and treatment method |
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| CN102659269A (en) * | 2012-04-19 | 2012-09-12 | 北京美通科技发展有限公司 | Efficient and stable coking wastewater advanced treatment process and treatment system |
| CN104649512A (en) * | 2014-12-23 | 2015-05-27 | 安徽省天虹绿洲环保科技有限公司 | High-concentration medicinal adjuvant wastewater treatment process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110510827A (en) * | 2019-09-12 | 2019-11-29 | 江苏蓝必盛化工环保股份有限公司 | The recycling treatment system and processing method of sodium carboxymethylcellulose production waste water |
| CN112707585A (en) * | 2020-12-03 | 2021-04-27 | 安徽森淼实业有限公司 | Recycling process of hydroxypropyl methyl cellulose production wastewater |
| CN112707585B (en) * | 2020-12-03 | 2022-08-16 | 安徽森淼实业有限公司 | Recycling process of hydroxypropyl methyl cellulose production wastewater |
| CN114291981A (en) * | 2022-02-11 | 2022-04-08 | 贵州中车绿色环保有限公司 | Red mud leachate biochemical treatment system and treatment method |
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Application publication date: 20180515 |