CN209338314U - A kind of chemical wastewater treatment system - Google Patents
A kind of chemical wastewater treatment system Download PDFInfo
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- CN209338314U CN209338314U CN201822215884.9U CN201822215884U CN209338314U CN 209338314 U CN209338314 U CN 209338314U CN 201822215884 U CN201822215884 U CN 201822215884U CN 209338314 U CN209338314 U CN 209338314U
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Abstract
A kind of chemical wastewater treatment system of the utility model relates to field of waste water treatment, more particularly to a kind of chemical wastewater treatment system, including be sequentially connected the first homogeneous unit, high density mixed retrogradation inventory member, level-one film upgrading unit, primary ion exchanger resin unit, secondary membrane upgrading unit, decarburization unit, the second homogeneous unit, de- COD unit, secondary ion exchanger resin unit, divide salt and evaporative crystallization unit；It is provided with the first dosing mouth and the second dosing mouth in the high density mixed retrogradation inventory member, the high density mixed clear unit bottom of retrogradation is provided with sewage draining exit；The utility model sewage disposal process is simple, it is integrated with traditional large scale chemical plant wastewater treatment route, two units of reuse water treatment system and strong brine processing system are combined into one, process flow is significantly simplified, reduce industrial wastewater plant investment, reagent consumption is saved, and solid waste amount is greatly reduced, there is very high economic value and the value of environmental protection.
Description
Technical field
The utility model relates to field of waste water treatment, and in particular to a kind of chemical wastewater treatment system.
Background technique
Sewage " zero-emission " refers to industry water after reusing, and by this part salt content and pollutant is highly concentrated shortens dirt into
Factory is discharged in water whole recycling and reusing, no waste liquid.Salt and pollutant in water are discharged in solid form by condensing crystallizing
Factory send destructor plant to fill or recycle as useful industrial chemicals.
The zero-emission sewage disposal technology that part uses at present specifically includes that pretreatment+ultrafiltration+reverse osmosis+multiple-effect evaporation,
Above-mentioned wastewater treatment can not achieve real zero-emission, and above-mentioned processing system cannot achieve effective point of various substances in sewage
From and utilize, only sewage is recycled, and the water intermediate ion of reuse, solid content are during existing sewage disposal technology
Crystalline solid is formed, needs to carry out security landfill, metal ion and organic matter containing high concentration in another crystalline solid, once locate
It is improper to manage, and being buried solid matter can polluted underground water.
Recirculating water blowdown water, the dense draining of desalted water and the sewage effluents that front end system comes, usually first pass through at recycle-water
Then reason system enters back into the strong brine processing system of tail end, because being divided into two units, so former and later two systems are respectively provided with respectively
From pretreatment, precipitated before and after the fouling zwitterion in system twice, and repeatedly generate sludge twice, solid waste yield is larger,
Traditional reuse water treatment system high density pond dosing be calcium hydroxide, the medicament can only remove the part carbonate in water from
Son, and calcium ions and magnesium ions removal ability is poor, usually producing the content of carbonate or bicarbonate radical in water is 150 ~ 200mg/L, at this
Under index, rear terminal membrane concentration is because fouling risk is larger, therefore return water rate usually only has 60 ~ 70%, causes a large amount of water to go to and is processed into
This biggish strong brine section, increases the treating capacity of strong brine processing system, while increasing construction investment.Meanwhile original two
A system is independent two systems, and it is also independent for being laid out with equipment arrangement, to a certain extent, also results in money
The waste in source, the increase of production cost.
Utility model content
To solve the above-mentioned problems, it is simple to provide a kind of wastewater treatment process for the utility model, reduces industrial wastewater device
Investment saves reagent consumption, and solid waste amount is greatly reduced, and a kind of chemical industry with higher economic value and the value of environmental protection is useless
Water treatment system.
A kind of chemical wastewater treatment system of the utility model, including be sequentially connected the first homogeneous unit, high density coagulation
Supernatant unit, level-one film upgrading unit, primary ion exchanger resin unit, secondary membrane upgrading unit, decarburization unit, the second homogeneous
Unit, secondary ion exchanger resin unit, divides salt and evaporative crystallization unit at de- COD unit；The high density mixed retrogradation inventory member
On be provided with the first dosing mouth and the second dosing mouth, the high density mixed clear unit bottom of retrogradation is provided with sewage draining exit；The secondary membrane
Third dosing mouth is provided between upgrading unit and decarburization unit；
Production water out is provided on the level-one film upgrading unit and secondary membrane upgrading unit, it is described to divide salt and evaporation knot
It is provided on brilliant unit and produces water out and Nacl outlet.
Preferably, the first dosing mouth is sodium carbonate dosing mouth, and the second dosing mouth is sodium hydroxide dosing mouth.
Preferably, the first dosing mouth is anhydrous calcium chloride dosing mouth, and the second dosing mouth is sodium hydroxide dosing mouth.
Or preferably, level-one film upgrading unit is reverse osmosis membrane upgrading unit.
Preferably, secondary membrane upgrading unit is reverse osmosis membrane upgrading unit, and the film in secondary membrane upgrading unit is antipollution
Seawater desalination reverse osmosis film.
Preferably, the resin in primary ion exchanger resin unit and secondary ion exchanger resin unit is weak acid Hydrogen tree
Rouge or weak acid sodium form resin or chelating resin.
Preferably, decarburization unit is multistage and/or multiple groups decarburization hydrophobic membrane composition.
Preferably, the second homogeneous unit is steel can or concrete basin.
Preferably, taking off COD unit is advanced oxidation unit or biochemical unit or resin adsorption unit or active carbon
One or more of absorbing unit combines.
Preferably, divide salt and evaporative crystallization unit is cold and hot crystallization apparatus or salt and evaporative crystallization unit is divided to be nanofiltration device
The unit that combines with multi-effect evaporator divides salt and evaporative crystallization unit is nanofiltration device and the list that MVR evaporator combines
Member.
The utility model sewage disposal process is simple, traditional large scale chemical plant wastewater treatment route is integrated with, by reuse
Two units of water treatment system and strong brine processing system are combined into one, and have significantly simplified process flow, reduce industrial wastewater dress
Investment is set, reagent consumption is saved, and solid waste amount is greatly reduced, there is very high economic value and the value of environmental protection.
Detailed description of the invention
Fig. 1 is utility model diagram.
Specific embodiment
A kind of chemical wastewater treatment system of the utility model, including be sequentially connected the first homogeneous unit, high density coagulation
Supernatant unit, level-one film upgrading unit, primary ion exchanger resin unit, secondary membrane upgrading unit, decarburization unit, the second homogeneous
Unit, secondary ion exchanger resin unit, divides salt and evaporative crystallization unit at de- COD unit；The high density mixed retrogradation inventory member
On be provided with the first dosing mouth and the second dosing mouth, the high density mixed clear unit bottom of retrogradation is provided with sewage draining exit；The secondary membrane
Third dosing mouth is provided between upgrading unit and decarburization unit；
Production water out is provided on the level-one film upgrading unit and secondary membrane upgrading unit, it is described to divide salt and evaporation knot
It is provided on brilliant unit and produces water out and Nacl outlet.
First dosing mouth is sodium carbonate dosing mouth, and the second dosing mouth is sodium hydroxide dosing mouth.First dosing mouth is anhydrous
Calcium chloride dosing mouth, the second dosing mouth are sodium hydroxide dosing mouth.Level-one film upgrading unit is reverse osmosis membrane upgrading unit.
Secondary membrane upgrading unit is reverse osmosis membrane upgrading unit, and the film in secondary membrane upgrading unit is antipollution sea water desalination
Reverse osmosis membrane.Resin in primary ion exchanger resin unit and secondary ion exchanger resin unit is weak acid h type resin or weak
Sour sodium form resin or chelating resin.Decarburization unit is multistage and/or multiple groups decarburization hydrophobic membrane composition.
Second homogeneous unit is steel can or concrete basin.De- COD unit is advanced oxidation unit or biochemical list
Member or one or more of resin adsorption unit or activated carbon adsorption unit combine.Divide salt and evaporative crystallization unit is
Cold and hot crystallization apparatus divides salt and evaporative crystallization unit are nanofiltration device and multi-effect evaporator combines unit or divide salt and steaming
Hair crystalline element is nanofiltration device and the unit that MVR evaporator combines.
In use, the dense draining of recirculating water blowdown water, desalted water and sewage effluents that front end system comes initially enter first
Homogeneous unit, the unit are usually arranged as homogeneous tank or homogeneous concrete pond, and main purpose is that front end water is carried out homogeneous
It measures, guarantees to enter rear unit water stabilization, then in high density coagulation clarification unit, and by sodium carbonate dosing mouth to highly dense
Sodium carbonate is added in degree coagulation supernatant unit, high density coagulation clarification unit is reacted by dosing, finally by hardness ions with dirt
The form of mud is discharged, and the hardness ions in water are removed, and is added by sodium hydroxide dosing mouth into high density mixed retrogradation inventory member
Enter sodium hydroxide, or anhydrous calcium chloride dosing mouth and sodium hydroxide dosing mouth are set in high density mixed retrogradation inventory member；
And anhydrous calcium chloride is added into high density mixed retrogradation inventory member by anhydrous calcium chloride dosing mouth, pass through sodium hydroxide dosing mouth
Sodium hydroxide is added into high density mixed retrogradation inventory member, sludge is discharged from sewage draining exit；Waste water after treatment enters level-one
Film upgrading unit, level-one film upgrading unit are reverse osmosis membrane upgrading unit, and setting produces the mouth of a river, return water on reverse osmosis membrane upgrading unit
Rate is 80-85%, and level-one film upgrading unit is connected by primary ion exchanger resin unit with secondary membrane upgrading unit, level-one from
Sub-exchange resin is removed calcium ions and magnesium ions in waste water by the effect of ion-exchange reactions, and secondary membrane upgrading unit also uses instead
Permeable membrane upgrading unit, selected film are the light film in antipollution sea, and return water rate is 75% ~ 80%；Secondary membrane upgrading unit and decarburization
It is provided with third dosing mouth between unit, mainly adds acid at this, as hydrochloric acid, sulfuric acid take off by the PH of waste water to being adjusted to 4.2
Carbon unit carries out carbonization treatment to the waste water after concentration；Enter the second homogeneous unit after carbonization treatment, the second homogeneous unit is steel
Tank or concrete basin processed, waste water are not less than 12h in the second homogeneous unit residence time, and to the second homogeneous unit, that treated is useless
Water carries out de- COD processing, and enters in secondary ion exchanger resin unit, and secondary ion exchanger resin passes through ion-exchange reactions
Effect, calcium ions and magnesium ions in waste water are removed, finally enter point salt and evaporative crystallization unit, Nacl is arranged from Nacl outlet
Out, other industrial chemicals be can be used as, produce water from water out discharge is produced, the utility model sewage disposal process is simple, is integrated with biography
System large scale chemical plant wastewater treatment route, two units of reuse water treatment system and strong brine processing system are combined into one,
Process flow has been significantly simplified, industrial wastewater plant investment has been reduced, saves reagent consumption, and solid waste amount is greatly reduced, has been had
There are very high economic value and the value of environmental protection.
Claims (10)
1. a kind of chemical wastewater treatment system, which is characterized in that including be sequentially connected the first homogeneous unit, high density mixed retrogradation
Inventory member, level-one film upgrading unit, primary ion exchanger resin unit, secondary membrane upgrading unit, decarburization unit, the second homogeneous list
Member, secondary ion exchanger resin unit, divides salt and evaporative crystallization unit at de- COD unit；In the high density mixed retrogradation inventory member
It is provided with the first dosing mouth and the second dosing mouth, the high density mixed clear unit bottom of retrogradation is provided with sewage draining exit；The secondary membrane is dense
Third dosing mouth is provided between contracting unit and decarburization unit；
Production water out is provided on the level-one film upgrading unit and secondary membrane upgrading unit, it is described to divide salt and evaporative crystallization list
It is provided in member and produces water out and Nacl outlet.
2. a kind of chemical wastewater treatment system as described in claim 1, which is characterized in that first dosing mouth adds for sodium carbonate
Medicine mouth, the second dosing mouth are sodium hydroxide dosing mouth.
3. a kind of chemical wastewater treatment system as described in claim 1, which is characterized in that first dosing mouth is anhydrous chlorination
Calcium dosing mouth, the second dosing mouth are sodium hydroxide dosing mouth.
4. a kind of chemical wastewater treatment system as described in Claims 2 or 3, which is characterized in that the level-one film upgrading unit is
Reverse osmosis membrane upgrading unit.
5. a kind of chemical wastewater treatment system as claimed in claim 4, which is characterized in that the secondary membrane upgrading unit is reverse osmosis
Permeable membrane upgrading unit, the film in secondary membrane upgrading unit are antipollution seawater desalination reverse osmosis film.
6. a kind of chemical wastewater treatment system as claimed in claim 5, which is characterized in that the primary ion exchanger resin unit
It is weak acid h type resin or weak acid sodium form resin or chelating resin with the resin in secondary ion exchanger resin unit.
7. a kind of chemical wastewater treatment system as claimed in claim 6, which is characterized in that the decarburization unit be it is multistage and/or
Multiple groups decarburization hydrophobic membrane composition.
8. a kind of chemical wastewater treatment system as claimed in claim 7, which is characterized in that second homogeneous unit is steel can
Or concrete basin.
9. a kind of chemical wastewater treatment system as claimed in claim 8, which is characterized in that the de- COD unit is advanced oxidation
Unit or biochemical unit or one or more of resin adsorption unit or activated carbon adsorption unit combine.
10. a kind of chemical wastewater treatment system as claimed in claim 9, which is characterized in that described to divide salt and evaporative crystallization unit
For cold and hot crystallization apparatus or divide salt and evaporative crystallization unit is nanofiltration device and multi-effect evaporator combines unit or divide salt and
Evaporative crystallization unit is nanofiltration device and the unit that MVR evaporator combines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822215884.9U CN209338314U (en) | 2018-12-27 | 2018-12-27 | A kind of chemical wastewater treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822215884.9U CN209338314U (en) | 2018-12-27 | 2018-12-27 | A kind of chemical wastewater treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209338314U true CN209338314U (en) | 2019-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822215884.9U Active CN209338314U (en) | 2018-12-27 | 2018-12-27 | A kind of chemical wastewater treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209338314U (en) |
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2018
- 2018-12-27 CN CN201822215884.9U patent/CN209338314U/en active Active
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Address after: No.61 Xiyan Road, Yanta District, Xi'an City, Shaanxi Province, 710054 Patentee after: Shaanxi Chemical Research Institute Co.,Ltd. Address before: No.61 Xiyan Road, Xi'an City, Shaanxi Province 710054 Patentee before: SHAANXI RESEARCH DESIGN INSTITUTE OF PETROLEUM CHEMICAL INDUSTRY |
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| CP03 | Change of name, title or address |