CN109824183A - A kind of high concentrated organic waste liquid zero-emission efficient treatment process with high salt - Google Patents
A kind of high concentrated organic waste liquid zero-emission efficient treatment process with high salt Download PDFInfo
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- CN109824183A CN109824183A CN201910153877.7A CN201910153877A CN109824183A CN 109824183 A CN109824183 A CN 109824183A CN 201910153877 A CN201910153877 A CN 201910153877A CN 109824183 A CN109824183 A CN 109824183A
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Abstract
The invention discloses a kind of high concentrated organic waste liquid zero-emission efficient treatment process with high salt, this kind of high concentrated organic waste liquid zero-emission efficient treatment process with high salt is the following steps are included: step (1), pretreatment: waste water enters metal ion removal reaction unit, it is pumped to catalysis oxidation neutralization precipitation high-performance device after adjusting and carries out Fenton's reaction, then lye neutralizes, and plate and frame filter press is entered after coagulating sedimentation；Step (2) softens desalination: the waste liquid after filters pressing carries out softening except salt treatment into efficient combination filtering and two-stage DTRO device is sequentially entered；Step (3) recovery processing: waste water enters ultraviolet device, sterilization recycling, and concentrated water enters efficient electrolysis reactor, produces CLO in anode chamber2、O3、Cl2And H2O2Gas, cathode chamber generate H2, NaOH, into purifying plant carry out hydrogen recycling.By the above-mentioned means, the present invention shortens technique, equipment investment and operating cost are saved, each byproduct can be recycled.
Description
Technical field
The present invention relates to high-salt wastewater processing technology fields, more particularly to a kind of high concentrated organic waste liquid zero-emission with high salt
Efficient treatment process.
Background technique
With China's rapid economic development, large scale industry garden is increasingly various, and industrial enterprise is continuously increased, wastewater and waste materials
Yield can also rise year by year, and the generation of especially industrial class hazardous waste, environmental problem is got worse, in the market conventional height
Salt waste water treatment process is all more single, and the salt in waste water can only be removed by evaporation technology, and there are following for evaporation equipment
Disadvantage: up-front investment is big, the construction period is long, operating cost is high and water unstable etc. out.
It is low and can recycle to need a set of effect stability, operating cost for the zero-emission that China industrial wastewater field is implemented
High-efficient treatment method, in view of defect existing for above-mentioned existing process for treating waste liquor with high salt, designing a kind of high concentration with high salt has
Machine Zero discharge efficient treatment process.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of high concentrated organic waste liquid zero-emission efficient process works with high salt
Skill shortens process flow, saves equipment investment and operating cost, and can recycle each byproduct, solves with high salt at present useless
The problems such as single effect of water treatment technology is poor.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: it is organic to provide a kind of high concentration with high salt
Zero discharge efficient treatment process, this kind of high concentrated organic waste liquid zero-emission efficient treatment process with high salt the following steps are included:
Step (1), pretreatment: high-salt wastewater to be processed enters metal ion removal reaction unit, according to the pH value of waste water,
Into ion remaval reaction unit, suitably plus in sulfuric acid, lye adjusting waste water pH value, addition reducing agent are conducive to the pH value of waste water
Heavy metal precipitation is pumped to catalysis oxidation neutralization precipitation high-performance device and carries out Fenton's reaction after adjusting, the waste water after Fenton's reaction,
It adds lye to be neutralized, adds PAM and carry out coagulating sedimentation, then enter plate and frame filter press；
Step (2) softens desalination: step has the entrance of the waste liquid in (1) after filters pressing to sequentially enter efficient combination filtering and two-stage
DTRO device carries out softening except salt treatment；
Step (3) recovery processing: water is produced in step (2) and enters effective UV device to waste water progress sterilization processing, water outlet
It recycles, concentrated water enters efficient electrolysis reactor, and cell reaction is as follows:
4NaCL+16H2O→2CLO2+2O3+Cl2+H2O2+12H2+4NaOH
CLO is produced in anode chamber2、O3、Cl2And H2O2Gas, a part enter cooling cycle water installations and carry out disinfection sterilization,
A part recycles；Cathode chamber generates H2, NaOH, into purifying plant carry out hydrogen recycling.
Preferably, high-salt wastewater to be processed in the step (1) passes through grid first to retain in high bisulfate waste liquor
Floating material and bulky grain pollutant, waste water are stored in storage tank after collecting, and after reaching certain liquid level, boosted pump is promoted to gold
Belong to ion remaval reaction unit.
Preferably, in the step (1) by pH instrument control automatic feeding lye, the high wastewater pH of alkali carries is to generating hydrogen
Oxide precipitation, this method can obtain good result, generally go to precipitate using alkaline waste water, chemical equation:
Cu2++2OH-=Cu (OH)2↓
Ca2++2F-=CaF2↓
Waste water pump after neutralization precipitation opens blender, passes through pH instrument control system to catalysis oxidation neutralization precipitation high-performance device
Automatic feeding sulfuric acid adjusts pH 3~4 by pH instrument；Enter hydrogen peroxide by pH instrument control automatic feeding and ferrous sulfate carries out
Fenton's reaction, reaction principle are as follows:
2Fe2++H2O2→2Fe3++2OH-
Fe3++H2O2→Fe2++HO2·+H+
HO2·+H2O2→O2+H2O+·OH+
RH+·OH+→R·+H2O
R·+O2→ROO+→……→CO2+H2O
Fe2+With H2O2Between react quickly, generate the very strong OH free radical of oxidability, then Fe2+Again with H2O2It is anti-rapidly
It answers, generates OH, OH and organic matter RH and react generation organic free radical R, R, which is further aoxidized, finally makes organic constitution
Carbochain fission occurs, is oxidized to CO2And H2O, so that the COD of waste water be made to substantially reduce, Fenton's reaction can be big without selectively oxidation
Most organic matters, while Fe2+It, finally can be by O as catalyst2It is oxidized to Fe3+, under certain pH value, can there is Fe (OH)3Colloid
Occur, it has flocculation, can largely reduce the suspended matter in water.
Preferably, in the step (2) efficient combination filtering include intermediate pool, DTRO intake pump, cartridge filter and
High-pressure pump, the waste liquid after filters pressing are introduced into intermediate pool and carry out water quality and quantity adjusting, then waste liquid to be processed by one section of DTRO into
Water pump lifting pressure is arranged cartridge filter after DTRO intake pump, prevents large granular impurity from entering in film, gives DTRO (butterfly
It is reverse osmosis) the last guarantee together of film column offer, cartridge filter, which is discharged, passes through the further adherence pressure of high-pressure pump, meets reverse osmosis
Filtering requirement.
Preferably, it in the step (2), to prevent microbial growth from polluting membrane module, adds and kills in inlet pipeline
Microbial inoculum；For prevent various indissoluble salts due to high power be concentrated and generate scale formation, into film before add antisludging agent；According to inlet flow-patterm
Situation adds a certain amount of acid, relevant ions is effectively prevent to form fouling because of alkaline environment.
Preferably, two-stage DTRO device includes circulating pump, membrane module, intermediate concentrated water case and two sections in the step (2)
DTRO, the filtered waste water of efficient combination enter membrane module by circulating pump, and the setting of circulating pump is in order to guarantee film surface foot
Enough flows and cross-flow flow velocity avoid fouling membrane, and membrane module uses DTRO film column, and membrane module water outlet is divided into concentrate and permeate
Two parts, there is a Serve Motor Control valve at concentrate end, for controlling the pressure in film group, to generate necessary production water recycling
Rate, permeate enter water producing tank and wait for that reuse or qualified discharge, concentrate are discharged into intermediate concentrated water case, and waiting is further processed, intermediate
Desalination is further concentrated by two sections of DTRO in waste water in concentrated water case, and a set of cleaning device and a set of punching is respectively set in two sections of DTRO
Cleaning device can effectively ensure that the normal operation of equipment, has good buffer capacity and handles slow property.
Compared with prior art, the beneficial effects of the present invention are: shorten process flow, save equipment investment and operation at
This, and each byproduct can be recycled, solve the problems such as current single effect of high-salt wastewater treatment process is poor.
Detailed description of the invention
Fig. 1 is a kind of process flow chart of high concentrated organic waste liquid zero-emission efficient treatment process with high salt.
Specific embodiment
Present pre-ferred embodiments are described in detail with reference to the accompanying drawing, so as to can be easier to the advantages of invention with feature
In being readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
Referring to Fig. 1, the embodiment of the present invention includes:
A kind of high concentrated organic waste liquid zero-emission efficient treatment process with high salt, this kind of high concentrated organic waste liquid zero-emission with high salt
Efficient treatment process the following steps are included:
Step (1), pretreatment: high-salt wastewater to be processed enters metal ion removal reaction unit, according to the pH value of waste water,
Into ion remaval reaction unit, suitably plus in sulfuric acid, lye adjusting waste water pH value, addition reducing agent are conducive to the pH value of waste water
Heavy metal precipitation is pumped to catalysis oxidation neutralization precipitation high-performance device and carries out Fenton's reaction after adjusting, the waste water after Fenton's reaction,
It adds lye to be neutralized, adds PAM and carry out coagulating sedimentation, then enter plate and frame filter press；
Step (2) softens desalination: step has the entrance of the waste liquid in (1) after filters pressing to sequentially enter efficient combination filtering and two-stage
DTRO device carries out softening except salt treatment；
Step (3) recovery processing: water is produced in step (2) and enters effective UV device to waste water progress sterilization processing, water outlet
It recycles, concentrated water enters efficient electrolysis reactor, produces CLO in anode chamber2、O3、Cl2And H2O2Gas, a part enter cold
But circulating water device carries out disinfection sterilization, and a part recycles；Cathode chamber generates H2, NaOH, carried out into purifying plant
The recycling of hydrogen.
High-salt wastewater to be processed passes through grid first to retain the floating material in high bisulfate waste liquor and big in the step (1)
Particulate pollutant, waste water are stored in storage tank after collecting, and after reaching certain liquid level, boosted pump is promoted to metal ion removal
Reaction unit.
By pH instrument control automatic feeding lye in the step (1), the high wastewater pH of alkali carries is heavy to hydroxide is generated
It forms sediment, this method can obtain good result, it generally goes to precipitate using alkaline waste water, chemical equation:
Cu2++2OH-=Cu (OH)2↓
Ca2++2F-=CaF2↓
Waste water pump after neutralization precipitation opens blender, passes through pH instrument control system to catalysis oxidation neutralization precipitation high-performance device
Automatic feeding sulfuric acid adjusts pH 3~4 by pH instrument；Enter hydrogen peroxide by pH instrument control automatic feeding and ferrous sulfate carries out
Fenton's reaction, reaction principle are as follows:
2Fe2++H2O2→2Fe3++2OH-
Fe3++H2O2→Fe2++HO2·+H+
HO2·+H2O2→O2+H2O+·OH+
RH+·OH+→R·+H2O
R·+O2→ROO+→……→CO2+H2O
Fe2+With H2O2Between react quickly, generate the very strong OH free radical of oxidability, then Fe2+Again with H2O2It is anti-rapidly
It answers, generates OH, OH and organic matter RH and react generation organic free radical R, R, which is further aoxidized, finally makes organic constitution
Carbochain fission occurs, is oxidized to CO2And H2O, so that the COD of waste water be made to substantially reduce, Fenton's reaction can be big without selectively oxidation
Most organic matters, while Fe2+It, finally can be by O as catalyst2It is oxidized to Fe3+, under certain pH value, can there is Fe (OH)3Colloid
Occur, it has flocculation, can largely reduce the suspended matter in water.
Efficient combination filtering includes intermediate pool, DTRO intake pump, cartridge filter and high-pressure pump, pressure in the step (2)
Waste liquid after filter is introduced into intermediate pool and carries out water quality and quantity adjusting, and then waste liquid to be processed promotes pressure by one section of DTRO intake pump
Power is arranged cartridge filter after DTRO intake pump, prevents large granular impurity from entering in film, gives DTRO
(butterfly is reverse osmosis) film column provides last guarantee together, and cartridge filter water outlet further promotes pressure by high-pressure pump
Power meets reverse osmosis filtering requirement.
In the step (2), to prevent microbial growth from polluting membrane module, fungicide is added in inlet pipeline；It is anti-
Only various indissoluble salts due to high power be concentrated and generate scale formation, into film before add antisludging agent；According to inlet flow-patterm situation, add
A certain amount of acid, effectively prevent relevant ions to form fouling because of alkaline environment.
Two-stage DTRO device includes circulating pump, membrane module, intermediate concentrated water case and two sections of DTRO in the step (2), efficiently
Combine filtered waste water and enter membrane module by circulating pump, the setting of circulating pump in order to guarantee the enough flows of film surface and
Cross-flow flow velocity avoids fouling membrane, and membrane module uses DTRO film column, and membrane module water outlet is divided into concentrate and permeate two parts, dense
There is a Serve Motor Control valve at contracting liquid end, for controlling the pressure in film group, to generate the necessary production water rate of recovery, permeate
Reuse or qualified discharge are waited for into water producing tank, and concentrate is discharged into intermediate concentrated water case, and waiting is further processed, in intermediate concentrated water case
Desalination is further concentrated by two sections of DTRO in waste water, and a set of cleaning device and a set of flusher, energy is respectively set in two sections of DTRO
The normal operation of equipment is enough effectively ensured, there is good buffer capacity and handles slow property.
In the step (3), cell reaction is as follows:
4NaCL+16H2O→2CLO2+2O3+Cl2+H2O2+12H2+4NaOH。
Its treatment effect is as shown in the table:
A kind of high concentrated organic waste liquid zero-emission efficient treatment process with high salt of the present invention, shortens process flow, saves equipment
Investment and operating cost, and each byproduct can be recycled, it solves single effect difference of current high-salt wastewater treatment process etc. and asks
Topic.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (6)
1. a kind of high concentrated organic waste liquid zero-emission efficient treatment process with high salt, it is characterised in that: this kind of high concentration with high salt is organic
Zero discharge efficient treatment process the following steps are included:
Step (1), pretreatment: high-salt wastewater to be processed enters metal ion removal reaction unit, according to the pH value of waste water, toward from
Suitably plus in sulfuric acid, lye adjusting waste water pH value, addition reducing agent make the pH value of waste water be conducive to a huge sum of money in son removal reaction unit
Belong to precipitating, catalysis oxidation neutralization precipitation high-performance device is pumped to after adjusting and carries out Fenton's reaction, the waste water after Fenton's reaction adds
Lye is neutralized, and is added PAM and is carried out coagulating sedimentation, then enters plate and frame filter press；
Step (2) softens desalination: step has the waste liquid in (1) after filters pressing to filter and two-stage DTRO into efficient combination is sequentially entered
Device carries out softening except salt treatment；
Step (3) recovery processing: water is produced in step (2) and enters effective UV device to waste water progress sterilization processing, water outlet recycling
It utilizes, concentrated water enters efficient electrolysis reactor, produces CLO in anode chamber2、O3、Cl2And H2O2Gas, a part are followed into cooling
Ring water installations carry out disinfection sterilization, and a part recycles；Cathode chamber generates H2, NaOH, into carrying out hydrogen in purifying plant
Recycling.
2. a kind of high concentrated organic waste liquid zero-emission efficient treatment process with high salt according to claim 1, it is characterised in that:
High-salt wastewater to be processed passes through grid first to retain floating material and the bulky grain pollution in high bisulfate waste liquor in the step (1)
Object, waste water are stored in storage tank after collecting, and after reaching certain liquid level, boosted pump is promoted to metal ion removal reaction dress
It sets.
3. a kind of high concentrated organic waste liquid zero-emission efficient treatment process with high salt according to claim 1, it is characterised in that:
By pH instrument control automatic feeding lye in the step (1), for the high wastewater pH of alkali carries to hydroxide precipitating is generated, it is heavy to neutralize
Waste water pump behind shallow lake is opened blender, by pH instrument control automatic feeding sulfuric acid, is led to catalysis oxidation neutralization precipitation high-performance device
PH instrument adjustment pH is crossed 3~4；Enter hydrogen peroxide by pH instrument control automatic feeding and ferrous sulfate carries out Fenton's reaction.
4. a kind of high concentrated organic waste liquid zero-emission efficient treatment process with high salt according to claim 1, it is characterised in that:
Efficient combination filtering includes intermediate pool, DTRO intake pump, cartridge filter and high-pressure pump, giving up after filters pressing in the step (2)
Liquid is introduced into intermediate pool and carries out water quality and quantity adjusting, and then waste liquid to be processed passes through one section of DTRO intake pump adherence pressure,
Cartridge filter is set after DTRO intake pump, prevents large granular impurity from entering in film, is provided to DTRO (butterfly is reverse osmosis) film column
Last to ensure together, cartridge filter water outlet meets reverse osmosis filtering requirement by the further adherence pressure of high-pressure pump.
5. a kind of high concentrated organic waste liquid zero-emission efficient treatment process with high salt according to claim 1, it is characterised in that:
In the step (2), to prevent microbial growth from polluting membrane module, fungicide is added in inlet pipeline；To prevent various difficulties
Soluble due to high power be concentrated and generate scale formation, into film before add antisludging agent；According to inlet flow-patterm situation, add a certain amount of
Acid effectively prevent relevant ions to form fouling because of alkaline environment.
6. a kind of high concentrated organic waste liquid zero-emission efficient treatment process with high salt according to claim 1, it is characterised in that:
Two-stage DTRO device includes circulating pump, membrane module, intermediate concentrated water case and two sections of DTRO, efficient combination filtering in the step (2)
Waste water afterwards enters membrane module by circulating pump, and the setting of circulating pump is in order to guarantee the enough flows of film surface and cross-flow stream
Speed avoids fouling membrane, and membrane module uses DTRO film column, and membrane module water outlet is divided into concentrate and permeate two parts, concentrate end
There is a Serve Motor Control valve, for controlling the pressure in film group, to generate the necessary production water rate of recovery, permeate enters production
Water tank waits for that reuse or qualified discharge, concentrate are discharged into intermediate concentrated water case, and waiting is further processed, and the waste water in intermediate concentrated water case is logical
It crosses two sections of DTRO and desalination is further concentrated, a set of cleaning device and a set of flusher is respectively set in two sections of DTRO, can be effective
Guarantee the normal operation of equipment, there is good buffer capacity and handles slow property.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110357310A (en) * | 2019-07-31 | 2019-10-22 | 武汉钢铁有限公司 | A method of processing steel industry recirculating water blowdown water Electro Sorb concentrated water |
| CN114105395A (en) * | 2020-08-27 | 2022-03-01 | 苏州希图环保科技有限公司 | Garbage leachate wastewater treatment process |
| CN117326752A (en) * | 2023-11-13 | 2024-01-02 | 江苏天从环保科技有限公司 | High-efficient combination processing system of reuse of reclaimed water in high salt waste water |
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| CN105461143A (en) * | 2016-01-21 | 2016-04-06 | 厦门嘉戎技术股份有限公司 | Power plant desulfurization waste water membrane concentrating process and equipment |
| CN109179867A (en) * | 2018-09-14 | 2019-01-11 | 河北云瑞化工设备有限公司 | The method of high-salt wastewater reuse and zero-emission |
| CN109264916A (en) * | 2018-09-17 | 2019-01-25 | 深圳能源资源综合开发有限公司 | A kind of flying dust leaching liquid processing method and its system |
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2019
- 2019-02-28 CN CN201910153877.7A patent/CN109824183A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105461143A (en) * | 2016-01-21 | 2016-04-06 | 厦门嘉戎技术股份有限公司 | Power plant desulfurization waste water membrane concentrating process and equipment |
| CN109179867A (en) * | 2018-09-14 | 2019-01-11 | 河北云瑞化工设备有限公司 | The method of high-salt wastewater reuse and zero-emission |
| CN109264916A (en) * | 2018-09-17 | 2019-01-25 | 深圳能源资源综合开发有限公司 | A kind of flying dust leaching liquid processing method and its system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110357310A (en) * | 2019-07-31 | 2019-10-22 | 武汉钢铁有限公司 | A method of processing steel industry recirculating water blowdown water Electro Sorb concentrated water |
| CN114105395A (en) * | 2020-08-27 | 2022-03-01 | 苏州希图环保科技有限公司 | Garbage leachate wastewater treatment process |
| CN117326752A (en) * | 2023-11-13 | 2024-01-02 | 江苏天从环保科技有限公司 | High-efficient combination processing system of reuse of reclaimed water in high salt waste water |
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