CN108946670A - Desulfurization wastewater is electrolysed removing chloride sodium hypochlorite equipment - Google Patents

Desulfurization wastewater is electrolysed removing chloride sodium hypochlorite equipment Download PDF

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Publication number
CN108946670A
CN108946670A CN201710368837.5A CN201710368837A CN108946670A CN 108946670 A CN108946670 A CN 108946670A CN 201710368837 A CN201710368837 A CN 201710368837A CN 108946670 A CN108946670 A CN 108946670A
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China
Prior art keywords
water
desulfurization wastewater
connect
spray equipment
pond
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CN201710368837.5A
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CN108946670B (en
Inventor
侯颖兵
邱继红
王洋
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Beijing Rui Water Research In Environmental Science And Technology Co Ltd
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Beijing Rui Water Research In Environmental Science And Technology Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B11/00Oxides or oxyacids of halogens; Salts thereof
    • C01B11/04Hypochlorous acid
    • C01B11/06Hypochlorites
    • C01B11/062Hypochlorites of alkali metals
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01DCOMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D3/00Halides of sodium, potassium or alkali metals in general
    • C01D3/04Chlorides
    • C01D3/06Preparation by working up brines; seawater or spent lyes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104Devices therefor; Their operating or servicing
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process 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 present invention relates to a kind of desulfurization wastewaters to be electrolysed removing chloride sodium hypochlorite equipment, desulfurization wastewater pond is connected to filter press, filter press is connected to pond, pond is connect with water pump, water pump is connect with electrolysis cells, electrolysis cells respectively with moisturizing pipeline, alkaline water water return pipeline, the connection of acidic effluent pipeline, the alkaline water water return pipeline is connect with desulfurization wastewater pond, acidic effluent pipeline is connect with spray equipment, spray equipment respectively with ejector, the connection of acid water return pipe, acid water return pipe is connect with desulfurization wastewater pond, the ejector respectively with circulating pump, water tank connection, water tank respectively with reaction kettle, moisturizing pipeline, circulating pump connection;The present invention is precipitated the chloride ion in water, the chlorine root concentration of water is effectively reduced, the chlorine root concentration balance of water is kept to achieve the effect that environment-friendly water-saving to reduce the discharge of water by electrolysis mode.

Description

Desulfurization wastewater is electrolysed removing chloride sodium hypochlorite equipment
Technical field
The present invention relates to a kind of dechlorination root devices, and in particular to a kind of desulfurization wastewater electrolysis removing chloride sodium hypochlorite is set It is standby.
Background technique
Existing industrial water or recirculated water, in use, the chlorine root concentration of water can Sui using higher and higher, water Chlorine root concentration is uneven, needs replacing, causes the waste of great lot of water resources.
Summary of the invention
The object of the present invention is to provide a kind of desulfurization wastewaters to be electrolysed removing chloride sodium hypochlorite equipment, by electrolysis side The chloride ion in water is precipitated in formula, and the chlorine root concentration of water is effectively reduced, and the chlorine root concentration balance of water is kept, to reduce water Discharge, achievees the effect that environment-friendly water-saving.
In order to achieve the above object, the present invention has following technical solution:
A kind of desulfurization wastewater of the invention is electrolysed removing chloride sodium hypochlorite equipment, including PLC, desulfurization wastewater pond, pressure Filter, pond, water pump, electrolysis cells, spray equipment, ejector, circulating pump, water tank and reaction kettle, the desulfurization wastewater pond It is connected to filter press, filter press is connected to pond, and pond is connect with water pump, and water pump is connect with electrolysis cells, electrolysis cells It is connect respectively with moisturizing pipeline, alkaline water water return pipeline, acidic effluent pipeline, the alkaline water water return pipeline and desulfurization wastewater pond Connection, acidic effluent pipeline are connect with spray equipment, and spray equipment is connect with ejector, acid water return pipe respectively, acid water Return pipe is connect with desulfurization wastewater pond, and the ejector is connect with circulating pump, water tank respectively, the water tank respectively with reaction kettle, Moisturizing pipeline, circulating pump connection;PLC respectively with water pump, filter press, electrolysis cells, spray equipment, circulating pump, reaction kettle, benefit The solenoid valve of waterpipe connects, to control water pump, filter press, electrolysis cells, spray equipment, circulating pump, reaction kettle, moisturizing The unlatching and operation of the solenoid valve of pipeline;After desulfurization wastewater in the desulfurization wastewater pond passes through filter press and pond, with water intaking Pumping generates the acidic effluent containing free chlorine after electrolysis and enters spray equipment, in negative pressure, the ring of low temperature to electrolysis cells Under border, free chlorine can be overflowed from water, then be siphoned away by ejector, to achieve the purpose that dechlorination root;The chlorine being pumped It is neutralized again with sodium hydroxide, generates sodium hypochlorite and sodium chloride.
Wherein, the electrolysis cells include electrolyte tank, several cathodes, several anodes, several cathode chambers, several Anode chamber, several described cathode chambers are the spaces of several cathodes separately constituted by several cathodes, several described sun Pole room is the space of several anodes separately constituted by several anodes, several described cathode chambers and several anode chambers are handed over For being arranged in electrolyte tank, after desulfurization wastewater enters anode chamber, desulfurization wastewater forms an acidic environment in anode chamber, and 10- 20% chloride ion is converted into free chlorine near anode;Acid water containing free chlorine enters back into spray equipment processing.
Wherein, the spray equipment includes spray waterpipe, air-cooler, mechanical pump, and the spray waterpipe is fixed on spray dress The top set, air-cooler are fixed on the outside of spray equipment, for spray equipment delivered inside cold air, mechanical pump to be fixed on spray Device top side, the bleeding point of mechanical pump are connect with ejector.
Due to taking above technical scheme, the present invention has the advantages that
The present invention is precipitated the chloride ion in water, the chlorine root concentration of water is effectively reduced, the chlorine of water is kept by electrolysis mode Root concentration balance achievees the effect that environment-friendly water-saving to reduce the discharge of water.
Detailed description of the invention
Fig. 1 is the schematic diagram of structure of the invention;
Fig. 2 is the schematic diagram of electrolysis cells of the present invention.
In figure, 1, desulfurization wastewater pond;2, filter press;3, pond;4, water pump;5, electrolysis cells;6, moisturizing pipeline;7, sour Property outlet conduit;8, sewage draining exit;9, alkaline water water return pipeline;10, spray equipment;11, ejector;12, water tank;13, reaction kettle; 14, alkaline water water return pipeline;15, bleeding point;16, cathode;17, anode;18, cathode chamber;19, anode chamber;20, desulfurization wastewater pipe Road;22, circulating pump.
Specific embodiment
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..
Referring to Fig. 1,2, a kind of desulfurization wastewater of the invention is electrolysed removing chloride sodium hypochlorite equipment, including PLC, desulfurization Wastewater disposal basin, filter press, pond, water pump, electrolysis cells, spray equipment, ejector, circulating pump, water tank and reaction kettle, it is described de- Sulphur wastewater disposal basin is connected to filter press, and filter press is connected to pond, and pond is connect with water pump, and water pump is connect with electrolysis cells, Electrolysis cells are connect with moisturizing pipeline, alkaline water water return pipeline, acidic effluent pipeline respectively, the alkaline water water return pipeline and de- The connection of sulphur wastewater disposal basin, acidic effluent pipeline are connect with spray equipment, and spray equipment connects with ejector, acid water return pipe respectively It connects, acid water return pipe is connect with desulfurization wastewater pond, and the ejector is connect with circulating pump, water tank respectively, the water tank difference It is connect with reaction kettle, moisturizing pipeline, circulating pump;PLC respectively with water pump, filter press, electrolysis cells, spray equipment, circulating pump, The solenoid valve connection of reaction kettle, moisturizing pipeline, to control water pump, filter press, electrolysis cells, spray equipment, circulating pump, anti- Answer kettle, moisturizing pipeline solenoid valve unlatching and operation;Desulfurization wastewater in the desulfurization wastewater pond passes through filter press and pond Afterwards, electrolysis cells are extracted into water pump, the acidic effluent containing free chlorine is generated after electrolysis and enters spray equipment, negative In the environment of pressure, low temperature, free chlorine can be overflowed from water, then be siphoned away by ejector, to achieve the purpose that dechlorination root;Quilt The chlorine taken away is neutralized with sodium hydroxide again, generates sodium hypochlorite and sodium chloride.
Wherein, the electrolysis cells include electrolyte tank, several cathodes, several anodes, several cathode chambers, several Anode chamber, several described cathode chambers are the spaces of several cathodes separately constituted by several cathodes, several described sun Pole room is the space of several anodes separately constituted by several anodes, several described cathode chambers and several anode chambers are handed over For being arranged in electrolyte tank, after desulfurization wastewater enters anode chamber, desulfurization wastewater forms an acidic environment in anode chamber, and 10- 20% chloride ion is converted into free chlorine near anode;Acid water containing free chlorine enters back into spray equipment processing.
The spray equipment includes spray waterpipe, air-cooler, mechanical pump, and the spray waterpipe is fixed on the upper of spray equipment Side, air-cooler are fixed on the outside of spray equipment, for spray equipment delivered inside cold air, mechanical pump to be fixed on spray equipment The bleeding point of portion side, mechanical pump is connect with ejector.
Filter press: being a kind of common solid-liquid separating equipment, using a kind of special filter medium, applies to object certain Pressure so that liquid dialysis come out a kind of mechanical equipment.Filter press function: coming out the solids extract in mixed liquor, real The effect of existing solid and liquid separation.
Ejector: venturi mixer, also known as ejector mixing, be it is a kind of itself without moving component, it be by Nozzle, suction chamber, diffuser pipe three parts composition.Working fluid with certain pressure is sprayed by nozzle at high speeds, makes pressure energy Conversion rate energy forms vacuum in nozzle outlet area, to will be attracted out by pumping medium, two strands of media in diffuser pipe into Row mixing and energy exchange, and speed is enable to be reduced into pressure energy, finally it is discharged with being higher than atmospheric pressure.Venturi mixer It is a kind of equipment for integrating air-breathing and hybrid reaction.Unique mixed air vessel's design, powerful water flow and air or liquid Mixing jetting makes to stir evenly, completely, and the bubble of generation is more and fine and smooth, promotes the raising of gas dissolved efficiency.It is common in liquid~gas It mixes, liquid~liquid phase mixing, can be also used for gas~gas phase mixing and gas~liquid phase mixing.Ejector structure is simple, work Make it is reliable, low noise, pollution-free, long service life, seldom repair, manage it is easy to use, convenient for comprehensively utilizing.It is particularly suitable for As mass transfer and chemical mixing consersion unit or intake-gas.Venturi mixer is commonly called as ejector, water sprayer etc..Manufacture material There are metal, plastics etc..
Obviously, above-mentioned implementation of the invention be only to clearly illustrate example of the present invention, and not be to this The restriction of the embodiment of invention.It for those of ordinary skill in the art, on the basis of the above description can be with It makes other variations or changes in different ways.Here all embodiments can not be exhaustive.It is all to belong to the present invention The obvious changes or variations extended out of technical solution still in the scope of protection of the present invention.

Claims (3)

1. a kind of desulfurization wastewater is electrolysed removing chloride sodium hypochlorite equipment, it is characterised in that: including PLC, desulfurization wastewater pond, pressure Filter, pond, water pump, electrolysis cells, spray equipment, ejector, circulating pump, water tank and reaction kettle, the desulfurization wastewater pond It is connected to filter press, filter press is connected to pond, and pond is connect with water pump, and water pump is connect with electrolysis cells, electrolysis cells It is connect respectively with moisturizing pipeline, alkaline water water return pipeline, acidic effluent pipeline, the alkaline water water return pipeline and desulfurization wastewater pond Connection, acidic effluent pipeline are connect with spray equipment, and spray equipment is connect with ejector, acid water return pipe respectively, acid water Return pipe is connect with desulfurization wastewater pond, and the ejector is connect with circulating pump, water tank respectively, the water tank respectively with reaction kettle, Moisturizing pipeline, circulating pump connection;PLC respectively with water pump, filter press, electrolysis cells, spray equipment, circulating pump, reaction kettle, benefit The solenoid valve of waterpipe connects, to control water pump, filter press, electrolysis cells, spray equipment, circulating pump, reaction kettle, moisturizing The unlatching and operation of the solenoid valve of pipeline;After desulfurization wastewater in the desulfurization wastewater pond passes through filter press and pond, with water intaking Pumping generates the acidic effluent containing free chlorine after electrolysis and enters spray equipment, in negative pressure, the ring of low temperature to electrolysis cells Under border, free chlorine can be overflowed from water, then be siphoned away by ejector, to achieve the purpose that dechlorination root;The chlorine being pumped It is neutralized again with sodium hydroxide, generates sodium hypochlorite and sodium chloride.
2. a kind of desulfurization wastewater as described in claim 1 is electrolysed removing chloride sodium hypochlorite equipment, it is characterised in that: described Electrolysis cells include electrolyte tank, several cathodes, several anodes, several cathode chambers, several anode chambers, it is described several Cathode chamber is the space of several cathodes separately constituted by several cathodes, several described anode chambers are by several anodes The space of several anodes separately constituted, several described cathode chambers and several anode chambers are arranged alternately in electrolyte tank, After desulfurization wastewater enters anode chamber, desulfurization wastewater forms an acidic environment in anode chamber, and 10-20% chloride ion is in anode Nearby it is converted into free chlorine;Acid water containing free chlorine enters back into spray equipment processing.
3. a kind of desulfurization wastewater as described in claim 1 is electrolysed removing chloride sodium hypochlorite equipment, it is characterised in that: described Spray equipment includes spray waterpipe, air-cooler, mechanical pump, and the spray waterpipe is fixed on the top of spray equipment, and air-cooler is solid It is scheduled on the outside of spray equipment, is used for spray equipment delivered inside cold air, mechanical pump is fixed on spray equipment top side, mechanical The bleeding point of pump is connect with ejector.
CN201710368837.5A 2017-05-23 2017-05-23 Equipment for preparing sodium hypochlorite by electrolysis and chloride ion removal of desulfurization wastewater Active CN108946670B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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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