CN105461107A - Water resource recovering technology for coking wastewater biochemical treatment effluent - Google Patents
Water resource recovering technology for coking wastewater biochemical treatment effluent Download PDFInfo
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- CN105461107A CN105461107A CN201510858653.8A CN201510858653A CN105461107A CN 105461107 A CN105461107 A CN 105461107A CN 201510858653 A CN201510858653 A CN 201510858653A CN 105461107 A CN105461107 A CN 105461107A
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
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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
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/101—Sulfur 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
- C02F2101/14—Fluorine or fluorine-containing 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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
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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
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
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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)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
A water resource recovering technology for coking wastewater biochemical treatment effluent comprises steps as follows: wastewater is softened; COD (chemical oxygen demand) degradation is performed with a catalytic oxidation method; multi-medium and activated carbon filter separation is performed; produced water is retained through ultrafiltration, and substances with the particle size larger than 0.05 mu m are retained; a liquid is separated through a nanofiltration membrane, and produced water is subjected to reverse osmosis salt-water separation. According to the technology, the separation pressure caused by salt on a membrane system is not increased, the discharge amount of strong brine cannot be increased, and the technology has great significance in energy conservation and emission reduction required by the zero-emission requirement of the coking industry.
Description
Technical field
The invention belongs to field of environment engineering technology, being specifically related to a kind of for coking chemical waste water bio-chemical effluent recycle-water resource technique, is coking industry coking chemical waste water Resource recovery Zero-discharge energy-saving gordian technique.
Background technology
Coking chemical waste water bio-chemical effluent recycle-water resource treatment process, is world subject, comprises coking chemical waste water bio-chemical effluent degree of depth preconditioning technique and water resources reuse technology.Coking chemical waste water biochemical treatment passes through nitrification-denitrification biochemical wastewater treatment system to coking phenol in wastewater, the higher removal rate of the harmful toxic matter such as prussiate and ammonia nitrogen, phenol in water outlet after biochemical treatment, cyanogen, the pollutent indexs such as ammonia nitrogen can reach or be better than secondary discharge standard in comprehensive wastewater emission standard, but system effluent quality is managed and time change constraint, fluctuation is larger, time have the phenomenon that exceeds standard, certain influence is caused to the recycle-water resource system steady running of coked waste water, from energy-saving and emission-reduction, realize coking production water internal recycle angle to consider, system sewage quality also can not meet the requirement of producing recycle-water resource.Domestic a lot of coking chemical waste water bio-chemical effluent directly uses the Engineering Projects of full embrane method recycle-water resource, steady running case is few, Water Sproading water resources rate is not high, mainly contain biochemical degradation material aromatic hydrocarbon and biochemical bacteria Extracellular enzyme in coking chemical waste water bio-chemical effluent, if bio-chemical effluent is directly entered membranous system recycle-water resource through coagulating sedimentation, the arene compound of difficult degradation in waste water and extracellular enzyme and aromatic hydrocarbon organic membrane physical reaction, be difficult to matting, cause non-renewable stifled film, cause system cloud gray model abnormal, when next is biochemical system fluctuation, water outlet oil content is higher, stifled ultra-filtration membrane, cause system cloud gray model ability low.Similar technique only adopts melded system as pre-treatment, and system is easily dirty stifled, fluctuation of service, and system recoveries rate is low, adopts this technology to be beneficial to and improves membranous system steady running, improve system water resource recovery, and reduce Zero-discharge coked wastewater energy consumption.
Summary of the invention
Technical problem solved by the invention is to provide a kind of coking chemical waste water bio-chemical effluent recycle-water resource technique, steady to ensure system cloud gray model, effective by the removal of the pollutents such as COD, SS, oils and colourity, the recycle-water resource system that meets of the coking chemical waste water bio-chemical effluent after process is intake, is improved the recycle-water resource system rate of recovery, thus solves the problem in above-mentioned background technology.
Technical problem solved by the invention realizes by the following technical solutions:
A kind of coking chemical waste water bio-chemical effluent recycle-water resource technique, comprises the steps:
(1) waste water is softened;
(2) adopt catalytic oxidation to carry out COD degradation to the liquid that step (1) obtains, COD is reduced to below 50mg/L;
(3) liquid obtained step (2) carries out multimedium and is separated with activated charcoal filter, suspended substance particle diameter is greater than 5um material and retains;
(4) the product hydromining ultrafiltration that step (3) obtains is retained, 0.05um material is greater than to particle diameter and retains;
(5) carry out nanofiltration membrane separation to the liquid that step (4) obtains, be separated by fluorion with calcium ions and magnesium ions, nanofiltration produces water calcium ions and magnesium ions lower than below 20mg/L, is difficult to form CaF2 crystallization fouling;
(6) the product water obtained step (5) carries out the separation of reverse osmosis salt solution, and waste water water resources reclaims more than 85%.
In the present invention, as the preferred technical scheme of one, in step (1), adopt lime-sodium carbonate softening process fully to remove the hardness in waste water, fluorion, use total hardness of water lower than 120mg/L, fluorion is lower than arriving 15mg/L.
In the present invention, as the preferred technical scheme of one, lime-sodium carbonate softening process step is: feeding lime and sodium carbonate in reaction tank, utilizes Ca wherein
2+and CO
3 2-, OH
-remove fluorion, sulfate ion, calcium ion and the magnesium ion in water body, remove a small amount of organism simultaneously, reduce the hardness in water body, reduce the inorganic pollution of membranous system; Reaction tank water outlet enters coagulative precipitation device, is separated by solid-liquid, reduces fluorion and hardness concentration.
In the present invention, as one preferred technical scheme further, in reaction tank, add coagulating agent, described coagulating agent is the aqueous solution of chloride containing aluminium 10wt%, anionic polyacrylamide 0.1wt% simultaneously.
In the present invention, as the preferred technical scheme of one, the oxygenant that the catalytic oxidation of step (2) adopts is hydrogen peroxide and ozone, and catalyzer is gac.
In the present invention, as the preferred technical scheme of one, in described pretreated waste water, the add-on of hydrogen peroxide is 2-5mg/L, these data are that contriver finds through research repeatedly and experiment many times, when the add-on of hydrogen peroxide is 2-5mg/L, can coordinate the oxidisability microbubble added containing ozone gas that the treatment effect of waste water is reached optimization.
In the present invention, as the preferred technical scheme of one, described ozone gas content is the oxidisability microbubble of 15mg/L.Adopt oxidisability microbubble oxidation unit to add, described oxidisability microbubble oxidation unit arranges isolating construction, oxidisability microbubble and useless Organic substance in water is reacted, and is separated with flocculation agent flocculation reaction solid-liquid-gas three phase.Coking chemical waste water can be carried out being oxidized and carry out solid-liquid separation, well remove the organic matter of water quality, colourity, suspended substance and oils.
Adopt hydrogen peroxide and ozone gas two kinds of oxygenants, under the effect of catalyzer, abundant mixed degradation organism, improves organic degradation rate, reaches the final object reducing waste water COD concentration.
In the present invention, in step (6), adopt two-stage nanofiltration and two steps ro process.
Reverse osmosis salt solution is separated the reverse osmosis membrane apparatus adopted and adopts internal-circulation type, and nanofiltration is produced salinity in water and be separated with water resources, water resources carries out production reuse.Reverse osmosis concentrated water mixes quenching or flushing cinder with the dense water of nanofiltration.
Owing to have employed above technical scheme, the present invention has following beneficial effect:
From technical scheme of the present invention, technique of the present invention is a kind of Integrated Processing Unit, and contriver takes into full account from all angles and designs single unit system of the present invention, and realizes and reach good operating performance.Namely contriver is while Treatment of Wastewater in Coking bio-chemical effluent, reduces the increase of systematic inorganic salt to greatest extent, in order to reduce film processing load and running cost, improve system recoveries rate.Coking chemical waste water bio-chemical effluent is by adding oxygenant oxidation degraded pollutant in water in oxidisability microbubble oxidizing treater, and Recalcitrant chemicals and color species in oxidation degrading waste water, reduce water outlet COD value; Organic and the inorganic composite flocculant that flocculation treatment then adopts the present invention to select especially, enhanced flocculation effect, raising solid-liquid separation efficiency.Clear water after the process of oxidisability microbubble oxidizing treater sends into film recovery system, is reduced the system salinity increasing amount of 20-50% by device of the present invention other oxidation pre-treatment devices relative.
By art breading of the present invention, and adopt the composite oxidant selected by the present invention for containing hydrogen peroxide and ozone gas.And the flocculation agent selected by the present invention is the aqueous solution of chloride containing aluminium 10% and anionic polyacrylamide 0.1% weight part.The present invention by coordinate add inorganic aluminum chloride can enhanced flocculation effect, improve flocculation efficiency, and the mud of favourable generation can carry out dewatering etc. subsequent disposal.
Therefore, thus following good treatment effect can be reached just because of present invention employs above technical scheme, namely, 1. the present invention adopts the deep oxidation device adding hydrogen peroxide and generation oxidisability ozone oxidation bubble co-treatment coking chemical waste water bio-chemical effluent to do the pre-treatment of film recovery system, prevent membranous system from by organism, oils blocking pollution in biochemical waste water, the steady running of system can not be ensured.
2. the present invention is adopted, coking chemical waste water bio-chemical effluent COD can be down to below 80mg/l from 200mg/l, COD clearance >=60% by oxidisability microbubble oxidation unit, SS (suspended substance in water quality) clearance >=90%, oils clearance >=90%, reduces organic fouling.
3. the present invention is adopted, oxidisability microbubble oxidizing treater increases salinity <5%, relative Fenton process oxidation pre-treatment there is no increases salinity to membranous system separating pressure, can not increase the discharge capacity of strong brine, the energy-saving and emission-reduction of relative coking industry zero emission requirement are significant.
Embodiment
The technique means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with specific embodiment, setting forth the present invention further.
Embodiment
A kind of coking chemical waste water bio-chemical effluent recycle-water resource technique, comprises the steps:
(1) waste water is softened: adopt lime-sodium carbonate softening process fully to remove the hardness in waste water, fluorion, use total hardness of water lower than 120mg/L, fluorion is lower than arriving 15mg/L, lime-sodium carbonate softening process step is: feeding lime and sodium carbonate in reaction tank, add coagulating agent in reaction tank simultaneously, described coagulating agent is the aqueous solution of chloride containing aluminium 10wt%, anionic polyacrylamide 0.1wt%, utilizes Ca wherein
2+and CO
3 2-, OH
-remove fluorion, sulfate ion, calcium ion and the magnesium ion in water body, remove a small amount of organism simultaneously, reduce the hardness in water body, reduce the inorganic pollution of membranous system; Reaction tank water outlet enters coagulative precipitation device, is separated by solid-liquid, reduces fluorion and hardness concentration;
(2) catalytic oxidation is adopted to carry out COD degradation to the liquid that step (1) obtains, COD is reduced to below 50mg/L, the oxygenant that catalytic oxidation adopts is hydrogen peroxide and ozone, catalyzer is gac, in pretreated waste water, the add-on of hydrogen peroxide is 2-5mg/L, these data are that contriver finds through research repeatedly and experiment many times, when the add-on of hydrogen peroxide is 2-5mg/L, can coordinate the oxidisability microbubble added containing ozone gas that the treatment effect of waste water is reached optimization; Described ozone gas content is the oxidisability microbubble of 15mg/L.Oxidisability microbubble oxidation unit is adopted to add, described oxidisability microbubble oxidation unit arranges isolating construction, oxidisability microbubble and useless Organic substance in water are reacted, and be separated with flocculation agent flocculation reaction solid-liquid-gas three phase, coking chemical waste water can be carried out being oxidized and carry out solid-liquid separation, the organic matter of good removing water quality, colourity, suspended substance and oils, adopt hydrogen peroxide and ozone gas two kinds of oxygenants, abundant mixed degradation organism under the effect of catalyzer, improve organic degradation rate, reach the final object reducing waste water COD concentration;
(3) liquid obtained step (2) carries out multimedium and is separated with activated charcoal filter, suspended substance particle diameter is greater than 5um material and retains;
(4) the product hydromining ultrafiltration that step (3) obtains is retained, 0.05um material is greater than to particle diameter and retains;
(5) carry out nanofiltration membrane separation to the liquid that step (4) obtains, be separated by fluorion with calcium ions and magnesium ions, nanofiltration produces water calcium ions and magnesium ions lower than below 20mg/L, is difficult to form CaF
2crystallization fouling;
(6) the product water obtained step (5) carries out the separation of reverse osmosis salt solution, and waste water water resources reclaims more than 85%, adopts two-stage nanofiltration and two steps ro process.
Application Example
When Hebei coke-oven plant does not use device of the present invention, coking chemical waste water can not be arranged outward, waste water adds salinity when adopting Fenton process to do pre-treatment, specific conductivity raises 20% ~ 30%, former water conductivity is 6000us/cm, after employing Fenton process, in former water, specific conductivity is 8000us/cm, and coking chemical waste water Water Sproading water resources rate is difficult to reach 80%, and rear employing device of the present invention can reach the target of coking chemical waste water Water Sproading water resources 80%, therefore, the energy-saving and emission-reduction of present invention process to coking industry are significant.
Adopt technique of the present invention, run water quality situation as following table at Hebei gasification of coking factory coking chemical waste water bio-chemical effluent embrane method recycle-water resource system:
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (8)
1. a coking chemical waste water bio-chemical effluent recycle-water resource technique, is characterized in that: comprise the steps:
(1) waste water is softened;
(2) adopt catalytic oxidation to carry out COD degradation to the liquid that step (1) obtains, COD is reduced to below 50mg/L;
(3) liquid obtained step (2) carries out multimedium and is separated with activated charcoal filter, suspended substance particle diameter is greater than 5um material and retains;
(4) the product hydromining ultrafiltration that step (3) obtains is retained, 0.05um material is greater than to particle diameter and retains;
(5) carry out nanofiltration membrane separation to the liquid that step (4) obtains, be separated by fluorion with calcium ions and magnesium ions, nanofiltration produces water calcium ions and magnesium ions lower than below 20mg/L, is difficult to form CaF2 crystallization fouling;
(6) the product water obtained step (5) carries out the separation of reverse osmosis salt solution, and waste water water resources reclaims more than 85%.
2. a kind of coking chemical waste water bio-chemical effluent recycle-water resource technique as claimed in claim 1, it is characterized in that: in step (1), adopt lime-sodium carbonate softening process fully to remove the hardness in waste water, fluorion, use total hardness of water lower than 120mg/L, fluorion is lower than arriving 15mg/L.
3. a kind of coking chemical waste water bio-chemical effluent recycle-water resource technique as claimed in claim 2, is characterized in that: lime-sodium carbonate softening process step is: feeding lime and sodium carbonate in reaction tank, utilizes Ca wherein
2+and CO
3 2-, OH
-remove fluorion, sulfate ion, calcium ion and the magnesium ion in water body, remove a small amount of organism simultaneously, reduce the hardness in water body, reduce the inorganic pollution of membranous system; Reaction tank water outlet enters coagulative precipitation device, is separated by solid-liquid, reduces fluorion and hardness concentration.
4. a kind of coking chemical waste water bio-chemical effluent recycle-water resource technique as claimed in claim 3, it is characterized in that: in reaction tank, add coagulating agent, described coagulating agent is the aqueous solution of chloride containing aluminium 10wt%, anionic polyacrylamide 0.1wt% simultaneously.
5. a kind of coking chemical waste water bio-chemical effluent recycle-water resource technique as claimed in claim 1, is characterized in that: the oxygenant that the catalytic oxidation of step (2) adopts is hydrogen peroxide and ozone, and catalyzer is gac.
6. a kind of coking chemical waste water bio-chemical effluent recycle-water resource technique as claimed in claim 5, is characterized in that: in described pretreated waste water, the add-on of hydrogen peroxide is 2-5mg/L.
7. a kind of coking chemical waste water bio-chemical effluent recycle-water resource technique as claimed in claim 6, is characterized in that: described ozone gas content is the oxidisability microbubble of 15mg/L.
8. a kind of coking chemical waste water bio-chemical effluent recycle-water resource technique as claimed in claim 1, is characterized in that: in step (6), adopts two-stage nanofiltration and two steps ro process.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510858653.8A CN105461107A (en) | 2015-12-01 | 2015-12-01 | Water resource recovering technology for coking wastewater biochemical treatment effluent |
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|---|---|---|---|
| CN201510858653.8A CN105461107A (en) | 2015-12-01 | 2015-12-01 | Water resource recovering technology for coking wastewater biochemical treatment effluent |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110577290A (en) * | 2018-06-11 | 2019-12-17 | 江苏久吾高科技股份有限公司 | method and device for recycling development waste liquid |
| CN113354195A (en) * | 2021-06-07 | 2021-09-07 | 河南易成环保科技有限公司 | Wastewater treatment process for biochemical system |
| CN108341525B (en) * | 2018-04-17 | 2024-03-19 | 深圳市清源宝科技有限公司 | Degradation device and method for high-temperature coke quenching wastewater |
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| WO2014089796A1 (en) * | 2012-12-13 | 2014-06-19 | General Electric Company | Method for treating high concentration wastewater such as ro brine |
| CN104291486A (en) * | 2014-09-30 | 2015-01-21 | 深圳能源资源综合开发有限公司 | High-power reuse technology for coal chemical industry strong brine and special equipment of high-power reuse technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108341525B (en) * | 2018-04-17 | 2024-03-19 | 深圳市清源宝科技有限公司 | Degradation device and method for high-temperature coke quenching wastewater |
| CN110577290A (en) * | 2018-06-11 | 2019-12-17 | 江苏久吾高科技股份有限公司 | method and device for recycling development waste liquid |
| CN113354195A (en) * | 2021-06-07 | 2021-09-07 | 河南易成环保科技有限公司 | Wastewater treatment process for biochemical system |
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