CN104261591A - Method and system for treating high-concentration salt-containing wastewater from prochloraz aminating working section - Google Patents
Method and system for treating high-concentration salt-containing wastewater from prochloraz aminating working section Download PDFInfo
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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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
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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
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic 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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
- C02F2201/46115—Electrolytic cell with membranes or diaphragms
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Abstract
The invention relates to the technical field of chemical wastewater treatment, in particular to a method and system for treating high-concentration salt-containing wastewater from a prochloraz aminating working section. The method comprises the following steps: regulating the pH value of the high-concentration salt-containing wastewater from the prochloraz aminating working section, performing coarse filtering and fine filtering on the high-concentration salt-containing wastewater so as to remove high-molecular-weight organic substances and suspended substances in the wastewater; and desalting the pretreated high-concentration salt-containing wastewater from the prochloraz aminating working section by using a bipolar membrane device so as to directly convert sodium chloride in the wastewater into hydrochloric acid and a sodium hydroxide solution with corresponding concentrations. Through the adoption of method and system for treating high-concentration salt-containing wastewater from the prochloraz aminating working section, secondary pollution and solid waste can be avoided, and removed salt can be directly converted into the hydrochloric acid and the sodium hydroxide solution with a certain concentrations and recycled to a front-end treatment process or a production process, so that the method and the system have the advantages of good desalting effect, resource conservation, energy conservation, simple process, low running cost and the like.
Description
Technical field
The present invention relates to wastewater from chemical industry technical field, be specifically related to a kind of meter Xian An amination workshop section high-concentration salt-containing wastewater treatment process and system thereof.
Background technology
The fresh amine of rice is a kind of wide-spectrum bactericide, has obvious preventive effect to the disease that various crop is caused by ascomycetes and imperfect fungi, also can be mixed with most of sterilant, Insecticides (tech) & Herbicides (tech), all has good prevention effect.
The fresh amine of rice is efficient as one, low toxicity, wide spectrum, eco-friendly sterilant, domestic production technique, in continuous progress, has reached technology and the quality level of developed country.According to statistics, China's control rice blast prochloraz demand is 3954 tons/year, is that this medicament is registered first of the medication of 16 kinds of crops of control, 23 kinds of diseases.As a kind of broad-spectrum high efficacy agricultural chemicals, turnout at home rises year by year in recent years.
The synthesis of the fresh amine of rice comprises: etherificate workshop section, amination workshop section, acidylate workshop section, condensation workshop section, the synthesis of prochloraz manganese salt.In amination workshop section, use a large amount of sheet alkali and hydrochloric acid as reaction raw materials, distillation process after the alkali in reaction, isolate in the waste liquid after Tri N-Propyl Amine, containing the sodium-chlor after a large amount of acid-base reactions and a small amount of organism.This waste liquid is discharged with waste water formation, quantity discharged is about 1.80 tons (waste water/ton products), and waste water component comprises: water 78.0% (W/W), sodium-chlor 20.00% (W/W), non-amination organic substance 1.0% (W/W), amination organic substance and suspended substance 1.0% (W/W).Layering waste water accounts for more than 18% of whole displacement product.It is high that this type of waste water has organic concentration, the feature that salt content is high.As directly entered biochemical treatment system, system will be caused normally to run.Current processing mode enters two kinds of processing modes of biochemical treatment system after mainly containing distillation desalination and dilution.
Distillation desalination adopts the mode of triple effect underpressure distillation or MVR distillation, the moisture in waste water and some volatile organism is distilled with water vapor form, and residue dope goes out the waste residue containing sodium-chlor crystallization through crystallization kettle Crystallization Separation.This type of waste residue, due to containing the difficult volatile organic compounds of part and building-up reactions intermediate, cannot directly be utilized, and only have as industrial dangerous waste process, very easily cause secondary pollution, and running cost is high.The method entering biochemical treatment system after dilution, because of salt excessive concentration, for meeting the requirement of biochemical treatment water inlet, need be diluted more than at least 40 times and just can meet the demands, causing a large amount of wastes of water, have larger problem in actually operating.Therefore, treatment process and the system thereof of developing a kind of meter Xian An amination workshop section high-concentration salt-containing wastewater also just become one of study hotspot.
Summary of the invention
The object of this invention is to provide a kind of meter Xian An amination workshop section high-concentration salt-containing wastewater treatment process and system thereof, non-secondary pollution, produce without solid waste, the salt that removes can be converted into certain density hydrochloric acid and sodium hydroxide solution, reuse to front-end processing process or production process, have desalting effect good, economize on resources and the energy, the advantage such as technique is simple, working cost is low.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of meter Xian An amination workshop section high-concentration salt-containing wastewater treatment process, comprises the steps:
(1) pre-treatment: filtered and secondary filter process through pH value adjustment, thick effect by meter Xian An amination workshop section high-concentration salt-containing wastewater, to remove macromolecule organic substance in waste water and suspended substance;
(2) pretreated meter Xian An amination workshop section high-concentration salt-containing wastewater is carried out desalting treatment by bipolar membrane device, the sodium-chlor in waste water is converted into hydrochloric acid and the sodium hydroxide solution of respective concentration, to reach the object of desalination.
Further, described meter Xian An amination workshop section high-concentration salt-containing wastewater is the middle-stage wastewater discharged in heparin sodium production process, its component comprises: described meter Xian An amination workshop section high-concentration salt-containing wastewater is the middle-stage wastewater discharged in the fresh amine production process of rice, and its component comprises: water 78% (W/W), sodium-chlor 20.0% (W/W), non-amination organic substance 1.0% (W/W), amination organic substance and suspended substance 1.0% (W/W).
Further, described pH value adjustment refers to adopt hydrochloric acid by waste water ph to 5 ~ 6.
Further, described hydrochloric acid is the hydrochloric acid that described bipolar membrane device produces.
Further, described thick effect is filtered and is adopted fiber bundle filter, and secondary filter employing precision is the filter element filtering device of 0.45 ~ 1.0 μm.
Further, described bipolar membrane device comprises cathode compartment, sour room, salt room, alkali room, anolyte compartment, and by anions and canons exchange membrane or Bipolar Membrane partitioned arrangement composition between each room, its arrangement mode is cationic exchange membrane-Bipolar Membrane-anion-exchange membrane.
Further, the plate current density of described bipolar membrane device is 220-240A/m
2, the spacing 4 ~ 8mm between each room, arranges flow-guiding channel in the middle of dividing plate; In acid room and alkali room, solution crosses Flow Velocity 4 ~ 8cm/s, salt room solution crosses Flow Velocity 8 ~ 12cm/s.
Further, acid in described desalting treatment process, alkali, salt three kinds of solution arrange independently basin and recycle pump respectively, by controlling the side line outflow rate of corresponding circulating pump, control waste water ratio of desalinization and concentration that is sour, alkaline solution; Controlling ratio of desalinization in described desalting treatment process is 95 ~ 98%, and concentration of hydrochloric acid is 12 ~ 15% (W/W), and naoh concentration is 15 ~ 17% (W/W).
Further, the treatment system that described nigrosine produces high-concentration salt-containing wastewater comprises: waste water tank, pH value setting device, thick effect filtration unit, precise filtering device, bipolar membrane device, recirculated cooling water heat-exchanger rig, acid case, alkali case, described waste water tank, pH value setting device, thick effect filtration unit, precise filtering device, be interconnected by lift pump or topping-up pump and connecting tube between bipolar membrane device, described bipolar membrane device and recirculated cooling water heat-exchanger rig are interconnected by pump and connecting tube, salt water tank and salt water circulating pump is provided with between described filtration unit and bipolar membrane device, described sour case is communicated with the sour room in described bipolar membrane device by acid circulating pump, described alkali case is communicated with the alkali room in described bipolar membrane device by alkali recycle pump.
Further, described salt water circulating pump exit end is provided with ready-package candle filter, to filter the suspensoid produced in demineralising process.
Ion-exchange in bipolar membrane device of the present invention is intermembranous is elastic baffle with runner, and anode adopts Ti-Ru electrode, and negative electrode adopts stainless steel electrode, the following (see figure 2) of specific works principle:
Waste water after filtration is pumped into the salt room of bipolar membrane device, and pump into deionized water at acid, alkali in room, room, pole adds the alkali lye of 10.0 ~ 15.0% (W/W) concentration simultaneously; The cathode and anode of bipolar membrane device be connected with the negative, positive pole of direct supply respectively, controlling DC electric field current density is 220 ~ 240A/m
2, voltage across poles 40V; Acid, alkali, salt room solution adopt recycle pump to circulate in respective chambers respectively, control at 1 ~ 40 DEG C by heat-exchanger rig by each room solution temperature, set temperature sensor in Controlling System, when exceeding design temperature, strengthen interchanger coolant rate, damage membrane module to prevent excessive temperature.
Chlorion in waste water is under electric field action, and selectivity arrives sour room through anion-exchange membrane, is combined generates hydrochloric acid with the hydrogen ion that Bipolar Membrane produces; Sodium ion selective in waste water arrives alkali room through cationic exchange membrane, is combined generates sodium hydroxide with the hydroxide ion that Bipolar Membrane produces, thus realizes the sodium-chlor in waste water to be separately converted to corresponding acid and alkali, achieves the object of desalination.
Solution in sour room in bipolar membrane device, alkali room, salt room all adopts recycle pump alone cycle, and pump discharge side line goes out to flow finished product, controls ratio of desalinization, acid concentration, alkali concn respectively by the side line outflow rate controlling different recycle pump.Under the prerequisite of comprehensive accounting running cost, control ratio of desalinization 95 ~ 98%, concentration of hydrochloric acid controls at 12 ~ 15% (W/W), and naoh concentration controls at 15 ~ 17% (W/W).
Positively effect of the present invention is: the combination relying on thick effect and accurate pre-treatment and bipolar membrane device, changes the conventional process mode of meter Xian An amination workshop section high-concentration salt-containing wastewater.Preprocessing process, by macromolecule organic substance most in waste water and suspended substance removal; Sodium-chlor in waste water can be regenerated hydrochloric acid and sodium hydroxide during bipolar membrane device process, completely avoid the secondary pollution problem of the waste residue that original distil process produces, the hydrochloric acid produced and sodium hydroxide inclusion-free, purity is high, can direct reuse to the treating processes of front end or production process.Use the present invention, can by whole production process more than 60 ~ 80% acid, alkali recycle, to greatly reduce in production process the consumption of acid, alkali; Meanwhile, the impact of salt on follow-up Sewage treatment systems is also reduced.Brine waste after process of the present invention, sodium chloride content can be reduced to 15 ~ 20g/L, substantially meets the basic saltiness requirement of biochemical wastewater treatment system.Contrast with Conventional espresso process, treatment method produces without any secondary pollution, the acid generated, alkali can direct reuse to treating processes or production process, and energy consumption cost is less than 200 yuan/m
3waste water.The present invention also can substitute current dilution process mode, reduces waste water total release at double.
accompanying drawing illustrates:
Fig. 1 is the process flow diagram of meter Xian An amination workshop section of the present invention high-concentration salt-containing wastewater treatment system;
Fig. 2 is bipolar membrane device principle of work schematic diagram of the present invention.
embodiment:
The following stated is only preferred embodiment of the present invention, does not therefore limit protection scope of the present invention.
Embodiment one, see shown in Fig. 1 to Fig. 2:
Meter Xian An amination workshop section high-concentration salt-containing wastewater: day quantity discharged be about 10 tons, waste water component comprises: water 78.0% (W/W), sodium-chlor 20.00% (W/W), non-amination organic substance 1.0% (W/W), amination organic substance and suspended substance 1.0% (W/W).
Meter Xian An amination workshop section high-concentration salt-containing wastewater treatment system comprises: 20m
3volume waste water tank 1, lift pump 1, pH value setting device 1 overlap, topping-up pump 2, fiber bundle filter 1, candle filter 1 overlap, 5m
3volume salt water tank 1,5m
31, volumetric acid case, 5m
31, volume alkali case, acid circulating pump 1, alkali recycle pump 1, salt water circulating pump 1, bipolar membrane device 1 overlap, recirculated cooling water heat-exchanger rig 1 overlaps.
A kind of meter Xian An amination workshop section's high-concentration salt-containing wastewater treatment process and system thereof, comprise the steps and technological process:
(1) preprocessing process:
1) the meter Xian An amination workshop section high-concentration salt-containing wastewater collected separately is promoted pH value setting device by lift pump sequence batch (waste water tank, with hydrochloric acid, waste water ph is adjusted to 5 ~ 6;
2) waste water after pH value adjustment process is promoted to fiber bundle filter by topping-up pump, filtrate waste water is promoted to by topping-up pump the candle filter that precision is 0.45 μm, and clear liquid gravity flow enters salt water tank, residue collection outward transport process;
(2) desalting treatment process:
1) sour case and alkali case are put into deionized water respectively, room, pole adds the alkali lye that concentration is 10.0% (W/W);
2) open bipolar membrane device, current density between cathode and anode is controlled at 220A/m
2, voltage across poles 40V, start acid, alkali, salt recycle pump, control sour room, alkali room solution crosses Flow Velocity 8cm/s, salt room solution crosses Flow Velocity 12cm/s, the spacing 8mm between each room, and arrange flow-guiding channel in the middle of dividing plate, each room solution temperature controls at 30 ~ 40 DEG C;
3) after in acid, alkali, salt water tank, respective concentration reaches set(ting)value, the side line opening corresponding circulating pump respectively goes out stream, under the prerequisite meeting ratio of desalinization 95%, acid concentration 12%, alkali concn 15%, salt solution: acid: the side line of alkali goes out stream than controlling at 1:1.32:1.24.
Anion-exchange membrane in described bipolar membrane device is Selemion CMV high-durability film, cationic exchange membrane is the high temperature resistant alkali resistance film of Selemion AHO, Bipolar Membrane is Neosebta BP-1 film, the intermembranous elastic baffle being provided with band runner of ion-exchange, anode adopts Ti-Ru electrode, and negative electrode adopts 304 stainless steel electrodes.Described salt water circulating pump exit end is provided with ready-package candle filter, to filter the suspensoid produced in demineralising process.
Under the prerequisite by above step operation, system runs 6 hours every day.After end of run, adopt 5.0% sodium hydroxide solution, inject acid, the indoor soaking and washing of salt 30 minutes, waste liquid enters salt water tank.
Find within cycle of operation of 60 days altogether, be under the condition of 20% (W/W) at former water sodium chloride concentration, by adjustment recycle pump side line water flow, all the time can ensure that water outlet sodium chloride concentration is less than 1.0% (W/W), comprehensive power consumption is about 200kwh/ ton (waste water).Recovery is produced concentration of hydrochloric acid and is about 12%, and alkali concn is about 15%, and the rear de-salted water of process directly enters plant area's Sewage treatment systems and carries out subsequent disposal.In whole treatment cycle, membrane module is without considerable change.
Embodiment two, see shown in Fig. 1 to Fig. 2:
Meter Xian An amination workshop section high-concentration salt-containing wastewater: day quantity discharged be about 6 tons, waste water component comprises: water 78.0% (W/W), sodium-chlor 20.00% (W/W), non-amination organic substance 1.0% (W/W), amination organic substance and suspended substance 1.0% (W/W).
Meter Xian An amination workshop section high-concentration salt-containing wastewater treatment system comprises: 10m
3volume waste water tank 1, lift pump 1, pH value setting device 1 overlap, topping-up pump 2, fiber bundle filter 1, candle filter 1 overlap, 3m
3volume salt water tank 1,3m
31, volumetric acid case, 3m
31, volume alkali case, acid circulating pump 1, alkali recycle pump 1, salt water circulating pump 1, bipolar membrane device 1 overlap, recirculated cooling water heat-exchanger rig 1 overlaps.
A kind of meter Xian An amination workshop section's high-concentration salt-containing wastewater treatment process and system thereof, comprise the steps and technological process:
(1) preprocessing process:
1) the meter Xian An amination workshop section high-concentration salt-containing wastewater collected separately is promoted pH value setting device by lift pump sequence batch (waste water tank, with hydrochloric acid, waste water ph is adjusted to 5 ~ 6;
2) waste water after pH value adjustment process is promoted to fiber bundle filter by topping-up pump, filtrate waste water is promoted to by topping-up pump the candle filter that precision is 1.0 μm, and clear liquid gravity flow enters salt water tank, residue collection outward transport process;
(2) desalting treatment process:
1) sour case and alkali case are put into deionized water respectively, room, pole adds the alkali lye that concentration is 15.0% (W/W);
2) open bipolar membrane device, current density between cathode and anode is controlled at 240A/m
2, voltage across poles 40V, start acid, alkali, salt recycle pump, control sour room, alkali room solution crosses Flow Velocity 8cm/s, salt room solution crosses Flow Velocity 10cm/s, the spacing 4mm between each room, and arrange flow-guiding channel in the middle of dividing plate, each room solution temperature controls at 20 ~ 30 DEG C;
3) after in acid, alkali, salt water tank, respective concentration reaches set(ting)value, the side line opening corresponding circulating pump respectively goes out stream, under the prerequisite meeting ratio of desalinization 98%, acid concentration 15%, alkali concn 17%, salt solution: acid: the side line of alkali goes out stream than controlling at 1:1.34:1.26.
Anion-exchange membrane in described bipolar membrane device is Selemion CSO type monovalent ion permselective membrane, cationic exchange membrane is Selemion ASV type monovalent ion permselective membrane, Bipolar Membrane is Neosebta BP-1 film, the intermembranous elastic baffle being provided with band runner of ion-exchange, anode adopts Ti-Ru electrode, and negative electrode adopts 304 stainless steel electrodes.Described salt water circulating pump exit end is provided with ready-package candle filter, to filter the suspensoid produced in demineralising process.
Under the prerequisite by above step operation, system runs 4 hours every day.After end of run, adopt 5.0% sodium hydroxide solution, inject acid, the indoor soaking and washing of salt 30 minutes, waste liquid enters salt water tank.
Find within cycle of operation of 60 days altogether, be under the condition of 20% (W/W) at former water sodium chloride concentration, by adjustment recycle pump side line water flow, all the time can ensure that water outlet sodium chloride concentration is less than 0.4% (W/W), comprehensive power consumption is about 220kwh/ ton (waste water).Recovery is produced concentration of hydrochloric acid and is about 15%, and alkali concn is about 17%, and the rear de-salted water of process directly enters plant area's Sewage treatment systems and carries out subsequent disposal.In whole treatment cycle, membrane module is without considerable change.
The above is only better embodiment of the present invention, therefore all equivalences done according to the ultimate principle described in patent claim of the present invention change or modify, and are included in patent claim of the present invention.
Claims (10)
1. a Zhong meter Xian An amination workshop section high-concentration salt-containing wastewater treatment process, is characterized in that comprising the steps:
(1) pre-treatment: filtered and secondary filter process through pH value adjustment, thick effect by meter Xian An amination workshop section high-concentration salt-containing wastewater, to remove macromolecule organic substance in waste water and suspended substance;
(2) pretreated meter Xian An amination workshop section high-concentration salt-containing wastewater is carried out desalting treatment by bipolar membrane device, the sodium-chlor in waste water is converted into hydrochloric acid and the sodium hydroxide solution of respective concentration.
2. meter Xian An amination workshop section according to claim 1 high-concentration salt-containing wastewater treatment process, it is characterized in that: described meter Xian An amination workshop section high-concentration salt-containing wastewater is the middle-stage wastewater discharged in the fresh amine production process of rice, and its component comprises: water 78% (W/W), sodium-chlor 20.0% (W/W), non-amination organic substance 1.0% (W/W), amination organic substance and suspended substance 1.0% (W/W).
3. meter Xian An amination workshop section according to claim 1 high-concentration salt-containing wastewater treatment process, is characterized in that: described pH value adjustment refers to adopt hydrochloric acid by waste water ph to 5 ~ 6.
4. meter Xian An amination workshop section according to claim 3 high-concentration salt-containing wastewater treatment process, is characterized in that: described hydrochloric acid is the hydrochloric acid that described bipolar membrane device produces.
5. meter Xian An amination workshop section according to claim 1 high-concentration salt-containing wastewater treatment process, is characterized in that: described thick effect is filtered and adopted fiber bundle filter, and secondary filter employing precision is the filter element filtering device of 0.45 ~ 1.0 μm.
6. meter Xian An amination workshop section according to claim 1 high-concentration salt-containing wastewater treatment process, it is characterized in that: described bipolar membrane device comprises cathode compartment, sour room, salt room, alkali room, anolyte compartment, by anions and canons exchange membrane or Bipolar Membrane partitioned arrangement composition between each room, its arrangement mode is cationic exchange membrane-Bipolar Membrane-anion-exchange membrane.
7. meter Xian An amination workshop section according to claim 1 high-concentration salt-containing wastewater treatment process, is characterized in that: the plate current density of described bipolar membrane device is 220-240A/m
2, the spacing 4 ~ 8mm between each room, arranges flow-guiding channel in the middle of dividing plate; In acid room and alkali room, solution crosses Flow Velocity 4 ~ 8cm/s, salt room solution crosses Flow Velocity 8 ~ 12cm/s.
8. meter Xian An amination workshop section according to claim 1 high-concentration salt-containing wastewater treatment process, it is characterized in that: acid in described desalting treatment process, alkali, salt three kinds of solution arrange independently basin and recycle pump respectively, by controlling the side line outflow rate of corresponding circulating pump, control waste water ratio of desalinization and concentration that is sour, alkaline solution; Controlling ratio of desalinization in described desalting treatment process is 95 ~ 98%, and concentration of hydrochloric acid is 12 ~ 15% (W/W), and naoh concentration is 15 ~ 17% (W/W).
9. the treatment system of the meter Xian An amination workshop section high-concentration salt-containing wastewater treatment process according to claim 1 or 6, it is characterized in that comprising: waste water tank, pH value setting device, thick effect filtration unit, precise filtering device, bipolar membrane device, recirculated cooling water heat-exchanger rig, acid case, alkali case, described waste water tank, pH value setting device, thick effect filtration unit, precise filtering device, be interconnected by lift pump or topping-up pump and connecting tube between bipolar membrane device, described bipolar membrane device and recirculated cooling water heat-exchanger rig are interconnected by pump and connecting tube, salt water tank and salt water circulating pump is provided with between described filtration unit and bipolar membrane device, described sour case is communicated with the sour room in described bipolar membrane device by acid circulating pump, described alkali case is communicated with the alkali room in described bipolar membrane device by alkali recycle pump.
10. the treatment system of meter Xian An amination workshop section according to claim 9 high-concentration salt-containing wastewater treatment process, is characterized in that: described salt water circulating pump exit end is provided with ready-package candle filter, to filter the suspensoid produced in demineralising process.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105036424A (en) * | 2015-08-28 | 2015-11-11 | 浙江奇彩环境科技有限公司 | Recycling wastewater desalination purification method and application thereof |
| CN105152417A (en) * | 2015-08-28 | 2015-12-16 | 浙江奇彩环境科技有限公司 | Method for recycling salt in organic waste water |
| CN108892302A (en) * | 2018-07-23 | 2018-11-27 | 绍兴齐英膜科技有限公司 | The integrated conduct method of Prochloraz production waste water |
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| CN103508521A (en) * | 2013-09-18 | 2014-01-15 | 中国海洋大学 | Recycling treatment method for salt-containing wastewater |
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| JP4430818B2 (en) * | 1998-01-20 | 2010-03-10 | サッチェム， インコーポレイテッド | Process for recovering onium hydroxide from solutions containing onium compounds |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105036424A (en) * | 2015-08-28 | 2015-11-11 | 浙江奇彩环境科技有限公司 | Recycling wastewater desalination purification method and application thereof |
| CN105152417A (en) * | 2015-08-28 | 2015-12-16 | 浙江奇彩环境科技有限公司 | Method for recycling salt in organic waste water |
| CN105036424B (en) * | 2015-08-28 | 2018-02-02 | 浙江奇彩环境科技股份有限公司 | A kind of waste water desalination purification method of recycling and its application |
| CN108892302A (en) * | 2018-07-23 | 2018-11-27 | 绍兴齐英膜科技有限公司 | The integrated conduct method of Prochloraz production waste water |
| CN108892302B (en) * | 2018-07-23 | 2021-04-13 | 绍兴齐英膜科技有限公司 | Comprehensive treatment method for prochloraz production wastewater |
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Address after: 200437, room 3, building 900, Lane 205, Quyang Road, Shanghai, Hongkou District Applicant after: SHANGHAI BODAN ENVIRONMENTAL ENGINEERING TECHNOLOGY CO., LTD. Address before: 200437, room 3, building 900, Lane 205, Quyang Road, Shanghai, Hongkou District Applicant before: Shanghai Bodan Environmental Engineering Technology Co., Ltd. |
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Application publication date: 20150107 |