CN108946670B - Equipment for preparing sodium hypochlorite by electrolysis and chloride ion removal of desulfurization wastewater - Google Patents
Equipment for preparing sodium hypochlorite by electrolysis and chloride ion removal of desulfurization wastewater Download PDFInfo
- Publication number
- CN108946670B CN108946670B CN201710368837.5A CN201710368837A CN108946670B CN 108946670 B CN108946670 B CN 108946670B CN 201710368837 A CN201710368837 A CN 201710368837A CN 108946670 B CN108946670 B CN 108946670B
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- water
- desulfurization wastewater
- spraying device
- electrolysis
- pump
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B11/00—Oxides or oxyacids of halogens; Salts thereof
- C01B11/04—Hypochlorous acid
- C01B11/06—Hypochlorites
- C01B11/062—Hypochlorites of alkali metals
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/04—Chlorides
- C01D3/06—Preparation by working up brines; seawater or spent lyes
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention relates to a sodium hypochlorite preparation device for electrolyzing desulfurization wastewater to remove chloride ions, wherein a desulfurization wastewater pool is communicated with a filter press, the filter press is communicated with a pool, the pool is connected with a water taking pump, the water taking pump is connected with an electrolysis unit, the electrolysis unit is respectively connected with a water supplementing pipeline, an alkaline water return pipeline and an acid water outlet pipeline, the alkaline water return pipeline is connected with the desulfurization wastewater pool, the acid water outlet pipeline is connected with a spraying device, the spraying device is respectively connected with an ejector and an acid water return pipeline, the acid water return pipeline is connected with the desulfurization wastewater pool, the ejector is respectively connected with a circulating pump and a water tank, and the water tank is respectively connected with a reaction kettle, the water supplementing pipeline and the circulating pump; according to the invention, through an electrolysis mode, chloride ions in water are separated out, so that the chloride concentration of the water is effectively reduced, the chloride concentration balance of the water is kept, the water discharge is reduced, and the effects of environmental protection and water saving are achieved.
Description
Technical Field
The invention relates to a dechlorination device, in particular to equipment for preparing sodium hypochlorite by electrolyzing desulfurization wastewater to remove chloride ions.
Background
The existing industrial water or circulating water has the defects that the chlorine radical concentration of the water is higher and higher in use, the chlorine radical concentration of the water is unbalanced and needs to be replaced, so that a large amount of water resources are wasted.
Disclosure of Invention
The invention aims to provide equipment for preparing sodium hypochlorite by electrolyzing desulfurization wastewater to remove chloride ions, which is capable of separating out chloride ions in water in an electrolysis mode, effectively reducing the chloride concentration of the water, and keeping the chloride concentration balance of the water, so that the discharge of the water is reduced, and the effects of environmental protection and water saving are achieved.
In order to achieve the above purpose, the invention has the following technical scheme:
the invention relates to equipment for preparing sodium hypochlorite by electrolyzing desulfurization wastewater to remove chloride ions, which comprises a PLC (programmable logic controller), a desulfurization wastewater tank, a filter press, a water tank, a water taking pump, an electrolysis unit, a spraying device, a jet device, a circulating pump, a water tank and a reaction kettle, wherein the desulfurization wastewater tank is communicated with the filter press; the PLC is respectively connected with electromagnetic valves of the water taking pump, the filter press, the electrolysis unit, the spraying device, the circulating pump, the reaction kettle and the water supplementing pipeline, so that the opening and the operation of the electromagnetic valves of the water taking pump, the filter press, the electrolysis unit, the spraying device, the circulating pump, the reaction kettle and the water supplementing pipeline are controlled; after passing through a filter press and a water tank, the desulfurization wastewater in the desulfurization wastewater tank is pumped to an electrolysis unit by a water taking pump, acidic effluent containing free chlorine is generated after electrolysis and enters a spraying device, and the free chlorine overflows from the water under the negative pressure and low temperature environment and is then sucked away by an ejector, so that the purpose of dechlorination is achieved; the pumped chlorine is neutralized by sodium hydroxide to generate sodium hypochlorite and sodium chloride.
The electrolysis unit comprises an electrolysis box, a plurality of cathodes, a plurality of anodes, a plurality of cathode chambers and a plurality of anode chambers, wherein the cathode chambers are spaces of the cathodes respectively formed by the cathodes, the anode chambers are spaces of the anodes respectively formed by the anodes, the cathode chambers and the anode chambers are alternately arranged in the electrolysis box, after desulfurization wastewater enters the anode chambers, the desulfurization wastewater forms an acidic environment in the anode chambers, and 10-20% of chloride ions are converted into free chlorine near the anodes; the acidic water containing free chlorine enters a spraying device again for treatment.
The spray device comprises a spray water pipe, an air cooler and a mechanical pump, wherein the spray water pipe is fixed above the spray device, the air cooler is fixed on the outer side of the spray device and used for conveying cold air into the spray device, the mechanical pump is fixed on one side of the upper portion of the spray device, and an air extracting opening of the mechanical pump is connected with the ejector.
Due to the adoption of the technical scheme, the invention has the advantages that:
according to the invention, through an electrolysis mode, chloride ions in water are separated out, so that the chloride concentration of the water is effectively reduced, the chloride concentration balance of the water is kept, the water discharge is reduced, and the effects of environmental protection and water saving are achieved.
Drawings
FIG. 1 is a schematic illustration of the structure of the present invention;
FIG. 2 is a schematic view of an electrolysis cell of the present invention.
In the figure, 1, a desulfurization wastewater tank; 2. a filter press; 3. a pool; 4. a water taking pump; 5. an electrolysis unit; 6. a water replenishing pipe; 7. an acidic water outlet pipeline; 8. a sewage outlet; 9. alkaline water return line; 10. a spraying device; 11. a jet device; 12. a water tank; 13. a reaction kettle; 14. alkaline water return line; 15. an extraction opening; 16. a cathode; 17. an anode; 18. a cathode chamber; 19. an anode chamber; 20. desulfurization waste water pipeline; 22. and a circulation pump.
Detailed Description
The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
Referring to figures 1 and 2, the equipment for preparing sodium hypochlorite by electrolyzing desulfurization wastewater to remove chloride ions comprises a PLC, a desulfurization wastewater pool, a filter press, a pool, a water taking pump, an electrolysis unit, a spraying device, a jet device, a circulating pump, a water tank and a reaction kettle, wherein the desulfurization wastewater pool is communicated with the filter press; the PLC is respectively connected with electromagnetic valves of the water taking pump, the filter press, the electrolysis unit, the spraying device, the circulating pump, the reaction kettle and the water supplementing pipeline, so that the opening and the operation of the electromagnetic valves of the water taking pump, the filter press, the electrolysis unit, the spraying device, the circulating pump, the reaction kettle and the water supplementing pipeline are controlled; after passing through a filter press and a water tank, the desulfurization wastewater in the desulfurization wastewater tank is pumped to an electrolysis unit by a water taking pump, acidic effluent containing free chlorine is generated after electrolysis and enters a spraying device, and the free chlorine overflows from the water under the negative pressure and low temperature environment and is then sucked away by an ejector, so that the purpose of dechlorination is achieved; the pumped chlorine is neutralized by sodium hydroxide to generate sodium hypochlorite and sodium chloride.
The electrolysis unit comprises an electrolysis box, a plurality of cathodes, a plurality of anodes, a plurality of cathode chambers and a plurality of anode chambers, wherein the cathode chambers are spaces of the cathodes respectively formed by the cathodes, the anode chambers are spaces of the anodes respectively formed by the anodes, the cathode chambers and the anode chambers are alternately arranged in the electrolysis box, after desulfurization wastewater enters the anode chambers, the desulfurization wastewater forms an acidic environment in the anode chambers, and 10-20% of chloride ions are converted into free chlorine near the anodes; the acidic water containing free chlorine enters a spraying device again for treatment.
The spraying device comprises a spraying water pipe, an air cooler and a mechanical pump, wherein the spraying water pipe is fixed above the spraying device, the air cooler is fixed on the outer side of the spraying device and used for conveying cold air into the spraying device, the mechanical pump is fixed on one side of the upper portion of the spraying device, and an air extracting opening of the mechanical pump is connected with the ejector.
And (3) a filter press: is a common solid-liquid separation device, and is a mechanical device which utilizes a special filter medium to apply a certain pressure to an object so as to dialyze out liquid. Filter press function: the solid in the mixed liquid is extracted, and the effect of solid-liquid separation is realized.
A jet device: the venturi mixer, also called jet mixer, is a kind of self-moving part, and consists of nozzle, suction chamber and diffuser pipe. The working fluid with certain pressure is sprayed out at high speed through the nozzle, so that the pressure energy is converted into speed energy, vacuum is formed in the outlet area of the nozzle, the pumped medium is attracted out, the two mediums are mixed and energy exchanged in the diffusion pipe, the speed energy is reduced into pressure energy, and finally the pressure energy is discharged at a pressure higher than the atmospheric pressure. A venturi mixer is a device that integrates the aspiration and mixing reactions. The unique design of the mixing air chamber, the strong water flow and the air or liquid are mixed and sprayed, so that the stirring is uniform and complete, the generated bubbles are more and finer, and the gas dissolution efficiency is improved. Is commonly used for liquid-gas phase mixing, liquid-liquid phase mixing, gas-gas phase mixing and gas-liquid phase mixing. The ejector has the advantages of simple structure, reliable operation, low noise, no pollution, long service life, little maintenance, convenient management and use and convenient comprehensive utilization. Particularly suitable for use as mass transfer and chemical mixing reaction equipment or as a pumping gas. Venturi mixers are commonly known as ejectors, water ejectors, and the like. The material of manufacture is metal, plastic, etc.
It will be apparent that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. Not all embodiments are exhaustive. All obvious changes or modifications which come within the spirit of the invention are desired to be protected.
Claims (3)
1. The utility model provides a desulfurization waste water electrolysis removes chloride ion system sodium hypochlorite equipment which characterized in that: the device comprises a PLC, a desulfurization wastewater tank, a filter press, a water tank, a water taking pump, an electrolysis module unit, a spraying device, a jet device, a circulating pump, a water tank and a reaction kettle, wherein the desulfurization wastewater tank is communicated with the filter press, the filter press is communicated with the water tank, the water tank is connected with the water taking pump, the water taking pump is connected with the electrolysis module unit, the electrolysis module unit is respectively connected with a water supplementing pipeline, an alkaline water return pipeline and an acid water outlet pipeline, the alkaline water return pipeline is connected with the desulfurization wastewater tank, the acid water outlet pipeline is connected with the spraying device, the spraying device is respectively connected with the jet device and the acid water return pipeline, the acid water return pipeline is connected with the desulfurization wastewater tank, the jet device is respectively connected with the circulating pump and the water tank, and the water tank is respectively connected with the reaction kettle, the water supplementing pipeline and the circulating pump; the PLC is respectively connected with electromagnetic valves of the water taking pump, the filter press, the electrolysis module unit, the spraying device, the circulating pump, the reaction kettle and the water supplementing pipeline, so that the opening and the operation of the electromagnetic valves of the water taking pump, the filter press, the electrolysis module unit, the spraying device, the circulating pump, the reaction kettle and the water supplementing pipeline are controlled; after passing through a filter press and a water tank, the desulfurization wastewater in the desulfurization wastewater tank is pumped to an electrolysis module unit by a water taking pump, acidic effluent containing free chlorine is generated after electrolysis and enters a spraying device, and the free chlorine overflows from the water under the negative pressure and low temperature environment and is then sucked away by an ejector, so that the aim of dechlorinating roots is fulfilled; neutralizing the pumped chlorine with sodium hydroxide to generate sodium hypochlorite and sodium chloride;
the jet device comprises: the device is a self-moving part, and consists of a nozzle, a suction chamber and a diffuser pipe; the working fluid with certain pressure is sprayed out at high speed through the nozzle, so that the pressure energy is converted into speed energy, vacuum is formed in the outlet area of the nozzle, the pumped medium is attracted out, the two mediums are mixed and energy exchanged in the diffusion pipe, the speed energy is reduced into pressure energy, and finally the pressure energy is discharged at a pressure higher than the atmospheric pressure.
2. The apparatus for preparing sodium hypochlorite by electrolyzing desulfurization wastewater to remove chloride ions as claimed in claim 1, wherein: the electrolysis module unit comprises an electrolysis box, a plurality of cathodes, a plurality of anodes, a plurality of cathode chambers and a plurality of anode chambers, wherein the cathode chambers are spaces of the cathodes respectively formed by the cathodes, the anode chambers are spaces of the anodes respectively formed by the anodes, the cathode chambers and the anode chambers are alternately arranged in the electrolysis box, after desulfurization wastewater enters the anode chambers, the desulfurization wastewater forms an acid environment in the anode chambers, and 10-20% of chloride ions are converted into free chlorine near the anodes; the acidic water containing free chlorine enters a spraying device again for treatment.
3. The apparatus for preparing sodium hypochlorite by electrolyzing desulfurization wastewater to remove chloride ions as claimed in claim 1, wherein: the spraying device comprises a spraying water pipe, an air cooler and a mechanical pump, wherein the spraying water pipe is fixed above the spraying device, the air cooler is fixed on the outer side of the spraying device and used for conveying cold air into the spraying device, the mechanical pump is fixed on one side of the upper portion of the spraying device, and an air extracting opening of the mechanical pump is connected with the ejector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710368837.5A CN108946670B (en) | 2017-05-23 | 2017-05-23 | Equipment for preparing sodium hypochlorite by electrolysis and chloride ion removal of desulfurization wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710368837.5A CN108946670B (en) | 2017-05-23 | 2017-05-23 | Equipment for preparing sodium hypochlorite by electrolysis and chloride ion removal of desulfurization wastewater |
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| Publication Number | Publication Date |
|---|---|
| CN108946670A CN108946670A (en) | 2018-12-07 |
| CN108946670B true CN108946670B (en) | 2023-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710368837.5A Active CN108946670B (en) | 2017-05-23 | 2017-05-23 | Equipment for preparing sodium hypochlorite by electrolysis and chloride ion removal of desulfurization wastewater |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5965009A (en) * | 1996-04-24 | 1999-10-12 | Permelec Electrode Ltd. | Method of producing acid water and electrolytic cell therefor |
| JP2000126773A (en) * | 1998-10-22 | 2000-05-09 | Hitachi Ltd | Apparatus for producing hypochlorite solution and water treatment apparatus |
| CN102465311A (en) * | 2010-11-19 | 2012-05-23 | 中国水利水电科学研究院 | Preparing system and method of sodium hypochlorite |
| CN106630027A (en) * | 2016-12-30 | 2017-05-10 | 华北电力大学（保定） | Method and system for treating high-chlorine desulfurization waste water by electrolytic method and performing flue gas mercury pollution control |
| CN206858162U (en) * | 2017-05-23 | 2018-01-09 | 北京中睿水研环保科技有限公司 | Desulfurization wastewater is electrolysed removing chloride sodium hypochlorite equipment |
-
2017
- 2017-05-23 CN CN201710368837.5A patent/CN108946670B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5965009A (en) * | 1996-04-24 | 1999-10-12 | Permelec Electrode Ltd. | Method of producing acid water and electrolytic cell therefor |
| JP2000126773A (en) * | 1998-10-22 | 2000-05-09 | Hitachi Ltd | Apparatus for producing hypochlorite solution and water treatment apparatus |
| CN102465311A (en) * | 2010-11-19 | 2012-05-23 | 中国水利水电科学研究院 | Preparing system and method of sodium hypochlorite |
| CN106630027A (en) * | 2016-12-30 | 2017-05-10 | 华北电力大学（保定） | Method and system for treating high-chlorine desulfurization waste water by electrolytic method and performing flue gas mercury pollution control |
| CN206858162U (en) * | 2017-05-23 | 2018-01-09 | 北京中睿水研环保科技有限公司 | Desulfurization wastewater is electrolysed removing chloride sodium hypochlorite equipment |
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| Publication number | Publication date |
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| CN108946670A (en) | 2018-12-07 |
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