CN109734234A - A kind of processing unit of copper-containing wastewater - Google Patents
A kind of processing unit of copper-containing wastewater Download PDFInfo
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- CN109734234A CN109734234A CN201910135400.6A CN201910135400A CN109734234A CN 109734234 A CN109734234 A CN 109734234A CN 201910135400 A CN201910135400 A CN 201910135400A CN 109734234 A CN109734234 A CN 109734234A
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- autoclave body
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Abstract
The invention belongs to technical field of sewage.The device treatment effect for being conventionally used to Treatment of Copper waste water is undesirable.For the problems of the prior art, the invention discloses a kind of processing units of copper-containing wastewater, including the pretreatment unit for carrying out precipitation process to copper-containing wastewater, the evaporative crystallization unit that waste water evaporation heating is separated by solid-liquid separation and the condensate liquid disposal unit for being carried out biological carbon and phosphorous removal processing to waste water evaporation condensate；Evaporative crystallization unit includes evaporation reaction kettle, condenser, hot steam condensation water collection pond and bottoms collecting pit, and evaporation reaction kettle includes the autoclave body, agitating device and evaporation board group of double-layer structure；Evaporating board group includes identical first evaporation plate of several structures and the second evaporation plate, each first evaporation plate and each second evaporation plate are vertically spaced apart, the fan-shaped body of first evaporation plate, segment surface portion outwardly protrude, and evaporation cavity is equipped in the first evaporation plate.High treating effect of the apparatus of the present invention to copper-containing wastewater.
Description
Technical field
The present invention relates to a kind of processing units of waste water, and in particular to a kind of processing unit of copper-containing wastewater belongs to sewage
Processing technology field.
Background technique
Copper-containing wastewater is a kind of waste water generated by the industry such as metallurgy, electronics, these copper-containing wastewaters have higher economic valence
Value, but have a degree of harm to people and environment.Copper content is up to 0.1~35g/L in copper-containing wastewater, substantially exceeds sewage
Discharge standard (GB8978-1996) would seriously pollute the environment if direct emission.Therefore, it is necessary to take the necessary measures to cupric
Waste water is handled.
Chemical precipitation method is mostly used to handle copper-containing wastewater greatly at present to remove the copper and organic pollutant in waste liquid,
Chemical precipitation method is although easy to operate, but due to heavy metal copper ion be easy with waste water in various organic acids such as citric acid,
EDTA, tartaric acid etc. combine and form stable complex compound, such as copper cyanogen complex ion [Cu (CN)2]-、 [Cu(CN)3]2- 、[Cu
(CN)4]3-, copper complex is not easy that removal is reacted and precipitated with chemical agent, therefore uses the conventional chemical precipitation method often difficult
To obtain satisfied treatment effect, in addition, containing largely dissolvable salt in waste liquid after being disposed using the above method, it is solvable
Solution salt is difficult to recycle, and will cause secondary pollution.
Summary of the invention
For the problems of the prior art, the present invention provides a kind of processing unit of copper-containing wastewater, which passes through setting
With the evaporative crystallization unit of pretreatment unit cooperation, the waste water after preprocessed unit precipitation process passes through steam heating evaporation water
Point, crystal salt residue is left, being completely separated for pollutant and water may be implemented, greatly improve the treatment effect to copper-containing wastewater.
To realize the above technical purpose, the technical scheme is that
A kind of processing unit of copper-containing wastewater, including pretreatment unit, evaporative crystallization unit and condensate liquid disposal unit；Institute
Pretreatment unit is stated for carrying out precipitation process to copper-containing wastewater；The evaporative crystallization unit is used for preprocessed cell processing
Waste water evaporation heating afterwards is separated by solid-liquid separation；The evaporative crystallization unit includes evaporation reaction kettle, condenser, hot steam condensation
Water collecting pit and bottoms collecting pit, the evaporation reaction kettle include autoclave body, agitating device and evaporation board group；The autoclave body is
The double Shell that outer shell and inner shell are constituted, forms an autoclave body cavity, outer layer between outer shell and inner shell
Steam inlet and steam (vapor) outlet are offered on shell, steam (vapor) outlet is connected by pipeline with hot steam condensation water collection pond；Institute
It states and is equipped with evaporation mouth at the top of autoclave body, evaporation mouth is connected with condenser by evaporation tube, is equipped on autoclave body top internal layer shell
Ring pipe, ring pipe top are communicated with inlet tube, and annular bottom of the tube offers the inlet opening towards kettle body bottom, the autoclave body
Bottom is equipped with sewage draining exit, and blowdown valve is equipped at sewage draining exit, and sewage draining exit is connected by blow-off line with bottoms collecting pit；It is described
Agitating device is for being stirred the intracorporal liquid of kettle；The evaporation board group include several first evaporation plates and several the
Two evaporation plates, the first evaporation plate and the second evaporation plate are respectively arranged on the inner wall of autoclave body axis two sides, each first evaporation plate and each
Second evaporation plate is vertically spaced apart, and the first evaporation plate is identical with the second evaporation plate structure, and the first evaporation plate is fan-shaped
Body, segment surface portion outwardly protrude to form arc convex, and evaporation cavity is equipped in the first evaporation plate, evaporates cavity and autoclave body
Cavity connection；The condensate liquid disposal unit is used to carry out biological carbon and phosphorous removal processing to the waste water condensed water evaporated.This hair
The bright evaporative crystallization unit by being arranged with pretreatment unit cooperation, the waste water after preprocessed unit precipitation process pass through steam
Heating evaporation moisture leaves crystal salt residue, and being completely separated for pollutant and water may be implemented, greatly improve to copper-containing wastewater
Treatment effect.In addition, evaporation reaction kettle can be improved by the structure of evaporation reaction kettle in design evaporative crystallization unit in the present invention
Evaporation efficiency, wherein by improve waste water feeding manner, enter waste water in autoclave body with multipoint system, can effectively control
It is too fast to make local waste liquid evaporation, prevents bumping phenomenon from occurring, the shape by improving evaporation plate can increase sewage and hot steam
Heat exchange area, improve heat exchanger effectiveness to improving evaporation efficiency.
Preferably, each first evaporation plate and each second evaporation plate are arranged diagonally downward, each first evaporation
It is in herringbone between plate and corresponding each second evaporation plate.Such setting can prevent the accumulation of pollutants in waste water from evaporating
The heat transfer efficiency of evaporation plate is influenced on plate.
Preferably, the agitating device includes agitating shaft and paddle, and the agitating shaft is vertically arranged, agitating shaft
One end is connected with the driving motor being arranged in outside autoclave body, and the agitating shaft other end protrudes into inside autoclave body and close to autoclave body bottom, institute
It states paddle to be arranged on agitating shaft, paddle includes cross bar and several stirring rods, wherein cross bar and agitating shaft bottom end phase
Even, the shape and autoclave body bottom shape of cross bar are adapted, and stirring rod is distributed along agitating shaft axially spaced-apart, and each stirring rod is respectively set
In the top of neighbouring each first evaporation plate and the second evaporation plate.Stirring can be improved by improving the structure of agitating device in the present invention
Effect makes waste water equably rapid evaporation, further increases evaporation efficiency.
Preferably, the pretreatment unit successively includes lime reaction slot, lime precipitation slot, pH adjustment tank I, oxygen
Change reactive tank, pH adjustment tank II, coagulation tank, flocculation tank, precipitation tank, neutralization chamber and Rinsing Area.The present invention passes through single in pretreatment
Oxidation reaction slot is set in member, adds ferrous sulfate and hydrogen peroxide in oxidation reaction slot, wherein one side Fe2+With H2O2It can
Reaction generates the stronger H0 of oxidisability, and complex state copper in waste water can be converted to ionic state copper, another aspect Fe by the H0 of generation2+It can
By the copper reduction of high price oxidation state at lower valency copper, the corrosivity and pollution of waste water are reduced.
Preferably, the condensate liquid disposal unit successively includes total conditioning tank, anaerobic pond, aerobic tank.
Preferably, the steam condensate (SC) collected in hot steam condensation water collection pond is back to pretreatment unit
The preparation of middle chemical precipitation medicament.
Preferably, the body material is enamel.
Detailed description of the invention
Fig. 1 is flow diagram when apparatus of the present invention are handled for copper-containing wastewater；
Fig. 2 is structural schematic diagram of the invention；
Fig. 3 is the structural schematic diagram of the ring pipe in the present invention；
Fig. 4 is the structural schematic diagram of the first evaporation plate in the present invention；
Fig. 5 is the structural schematic diagram of the first evaporation plate in the present invention；
Appended drawing reference:
001. pretreatment unit, 002. evaporative crystallization unit 100. evaporates 110. autoclave body of reaction kettle, 111. outer shell
1111. steam inlet, 1112. steam (vapor) outlet, 112. inner shell, 113. autoclave body cavity, 114. evaporation mouth, 1141. evaporation tube
115. 121. agitating shaft of ring pipe 1151. inlet tube, 1152. inlet opening, 116. blowdown valve, 117. blow-off line, 122. cross bar
123. 131. first evaporation plate of stirring rod, 1311. arc convex 1312. evaporates the condensation of 132. second evaporation plate 200. of cavity
300. 400. bottoms collecting pit of hot steam condensation water collection pond of device, 003. condensate liquid disposal unit
Specific embodiment
In conjunction with Fig. 1 to Fig. 4, the specific embodiment that the present invention will be described in detail, but claim of the invention is not done
Any restriction.
As shown in Figures 1 to 5, a kind of processing unit of copper-containing wastewater, including pretreatment unit 001, evaporative crystallization unit
002 and condensate liquid disposal unit 003；
The pretreatment unit 001 is used to carry out precipitation process to copper-containing wastewater, and the pretreatment unit 001 successively includes
Lime reaction slot, lime precipitation slot, pH adjustment tank I, oxidation reaction slot, pH adjustment tank II, coagulation tank, flocculation tank, precipitation tank, in
With slot and Rinsing Area；
The evaporative crystallization unit 002 is used to carry out solid-liquid to treated the waste water evaporation heating of preprocessed unit 001
Separation, the evaporative crystallization unit 002 include evaporation reaction kettle 100, condenser 200, hot steam condensation water collection pond 300 and steam
Residue collecting pit 400 is evaporated, the evaporation reaction kettle 100 includes autoclave body 110, agitating device and evaporation board group；
The autoclave body 110 is the double Shell that outer shell 111 and inner shell 112 are constituted, outer shell 111 and internal layer
An autoclave body cavity 113 is formed between shell 112, offers steam inlet 1111 and steam (vapor) outlet 1112 in outer shell 111,
Wherein, steam inlet 1111 and steam (vapor) outlet 1112 are located at 110 axis two sides of autoclave body and are located at 110 bottom of autoclave body and top
Portion, steam (vapor) outlet 1112 are connected by pipeline with hot steam condensation water collection pond 300；Wherein, in order to sufficiently economize on resources, heat
The steam condensate (SC) collected in steam condensate (SC) collecting pit 300 can be back to chemical precipitation medicament in pretreatment unit 001
It prepares, in order to improve the corrosion resistance of autoclave body 110,110 material of autoclave body uses enamel；
Evaporation mouth 114 is offered at the top of the autoclave body 110, evaporation mouth 114 is connected by evaporation tube 1141 with condenser 200
It is logical, ring pipe 115 is installed, 115 top of ring pipe is communicated with inlet tube 1151, ring on the 110 top internal layer shell of autoclave body
115 bottom of shape pipe offers the inlet opening 1152 towards bottom in autoclave body 110, and 110 bottom of autoclave body is equipped with sewage draining exit, blowdown
Blowdown valve 116 is equipped at mouthful, sewage draining exit is connected by blow-off line 117 with bottoms collecting pit 400；
The agitating device includes agitating shaft 121 and paddle, and the agitating shaft 121 is vertically arranged, 121 one end of agitating shaft
It is connected with the driving motor being arranged in outside autoclave body 110,121 other end of agitating shaft protrudes into the inside of autoclave body 110 and close to autoclave body 110
Bottom, the paddle are arranged on agitating shaft 121, and paddle includes cross bar 122 and several stirring rods, wherein cross bar 122
It is connected with 121 bottom end of agitating shaft, the shape and 110 bottom shape of autoclave body of cross bar 122 are adapted, and stirring rod is along 121 axis of agitating shaft
To being spaced apart, each stirring rod is horizontally disposed and is located at the upper of neighbouring each first evaporation plate 131 and the second evaporation plate 132
Side；
The evaporation board group includes several first evaporation plates 131 and several second evaporation plates 132, the first evaporation plate
131 and second evaporation plate 132 be respectively arranged on the inner wall of 110 axis two sides of autoclave body, each first evaporation plate 131 and it is each second evaporation
Plate 132 is vertically spaced apart and is arranged diagonally downward, each first evaporation plate 131 and corresponding each second evaporation plate
It is in herringbone between 132, the first evaporation plate 131 is identical with 132 structure of the second evaporation plate, the fan-shaped body of the first evaporation plate 131,
Segment surface portion outwardly protrudes to form arc convex 1311, and evaporation cavity 1312 is equipped in evaporation plate, evaporates cavity 1312
It is connected to autoclave body cavity 113；
The condensate liquid disposal unit 003 is used to carry out biological carbon and phosphorous removal processing, institute to the waste water condensed water evaporated
Stating condensate liquid disposal unit 003 successively includes total conditioning tank, anaerobic pond, aerobic tank.
Principle: for copper-containing wastewater with lime reaction first in lime reaction slot, that reacts generation is deposited in lime precipitation slot
Then the pH of copper-containing wastewater is adjusted to after acidity through oxidation reaction slot oxidation processes, through aoxidizing by middle removal in pH adjustment tank I
PH is pulled back to alkalinity by pH adjustment tank II and obtains alkaline waste water by treated waste water, and alkaline waste water is successively through coagulation tank, wadding
Solidifying slot, precipitation tank and neutralization chamber carry out coagulation, flocculation, precipitating and neutralisation treatment, and the supernatant in neutralization chamber flows into Rinsing Area
It is temporary, evaporation reaction kettle 100 then, which is delivered to, through perfusion tube is evaporated processing；Evaporate the waste water that the evaporation of reaction kettle 100 issues
Steam is entered in condenser 200 by evaporation tube 1141, and the waste steam of evaporation is condensed into condensed water by condenser 200, condensation
Anaerobic pond is passed sequentially through after always pond being adjusted to adjust pH for water and aerobic tank is handled to reduce the nitrogen and phosphorus content in waste water, final row up to standard
It puts, crystalline salt by evaporation residue is discharged into bottoms collecting pit 400 by blow-off line 117, and evaporation reaction kettle 100 evaporates used
Condensed water is formed after hot steam is cooling and can be back to pretreatment unit 001 after collecting in hot steam condensation water collection pond 300
The preparation of middle chemical precipitation medicament.
In conclusion the invention has the following advantages that
1. the present invention adds sulfuric acid Asia by the way that oxidation reaction slot is arranged in pretreatment unit 001 in oxidation reaction slot
Iron and hydrogen peroxide, wherein one side Fe2+With H2O2It can react and generate the stronger H0 of oxidisability, the H0 of generation can be by network in waste water
It closes state copper and is converted to ionic state copper, another aspect Fe2+The corrosion of waste water can be reduced by the copper reduction of high price oxidation state at lower valency copper
Property and pollution；By the way that the evaporative crystallization unit 002 cooperated with pretreatment unit 001, preprocessed 001 place of settling of unit is arranged
Waste water after reason leaves crystal salt residue by steam heating evaporation moisture, being completely separated for pollutant and water may be implemented, greatly
The big treatment effect improved to copper-containing wastewater；By the way that the condensate liquid disposal unit 003 cooperated with evaporative crystallization unit 002 is arranged,
Waste water condensed water can be evaporated to evaporative crystallization unit 002 and carries out biological carbon and phosphorous removal processing, to further increase to cupric
The treatment effect of waste water.
2. evaporation reaction can be improved by the structure of evaporation reaction kettle 100 in design evaporative crystallization unit 002 in the present invention
The evaporation efficiency of kettle 100, wherein by improving the feeding manner of waste water, enter waste water in autoclave body 110 with multipoint system, energy
Enough local waste liquid evaporations of effectively control are too fast, prevent bumping phenomenon from occurring, the shape by improving evaporation plate can increase sewage
With the heat exchange area of hot steam, heat exchanger effectiveness is improved to improve evaporation efficiency, the structure by improving agitating device can
To improve mixing effect, makes waste water equably rapid evaporation, further increase evaporation efficiency.
It is understood that being merely to illustrate the present invention above with respect to specific descriptions of the invention and being not limited to this
Technical solution described in inventive embodiments.Those skilled in the art should understand that still can be carried out to the present invention
Modification or equivalent replacement, to reach identical technical effect；As long as meet use needs, all protection scope of the present invention it
It is interior.
Claims (7)
1. a kind of processing unit of copper-containing wastewater, including pretreatment unit, the pretreatment unit is used to carry out copper-containing wastewater
Precipitation process；It is characterized in that, further including evaporative crystallization unit and condensate liquid disposal unit；The evaporative crystallization unit for pair
Waste water evaporation heating after preprocessed cell processing is separated by solid-liquid separation；The evaporative crystallization unit include evaporation reaction kettle,
Condenser, hot steam condensation water collection pond and bottoms collecting pit, the evaporation reaction kettle includes autoclave body, agitating device and steaming
Send out board group；The autoclave body is the double Shell that outer shell and inner shell are constituted, and is formed between outer shell and inner shell
One autoclave body cavity, steam inlet and steam (vapor) outlet are offered in outer shell, and steam (vapor) outlet is condensed by pipeline and hot steam
Water collecting pit is connected；Evaporation mouth is equipped at the top of the autoclave body, evaporation mouth is connected by evaporation tube with condenser, at the top of autoclave body
Ring pipe is installed in inner shell, is communicated at the top of ring pipe with inlet tube, annular bottom of the tube is offered towards kettle body bottom
Inlet opening, the autoclave body bottom is equipped with sewage draining exit, blowdown valve is equipped at sewage draining exit, and sewage draining exit is residual by blow-off line and distillation
Slag collecting pit is connected；The agitating device is for being stirred the intracorporal liquid of kettle；The evaporation board group include several
One evaporation plate and several second evaporation plates, the first evaporation plate and the second evaporation plate are respectively arranged on the inner wall of autoclave body axis two sides
On, each first evaporation plate and each second evaporation plate are vertically spaced apart, the first evaporation plate and the second evaporation plate structure phase
Together, the fan-shaped body of the first evaporation plate, segment surface portion outwardly protrude to form arc convex, and evaporation is equipped in the first evaporation plate
Cavity, evaporation cavity are connected to autoclave body cavity；The condensate liquid disposal unit is for giving birth to the waste water condensed water evaporated
The processing of object denitrogenation dephosphorizing.
2. the processing unit of copper-containing wastewater as described in claim 1, which is characterized in that each first evaporation plate and each second
Evaporation plate is arranged diagonally downward, is in herringbone between each first evaporation plate and corresponding each second evaporation plate.
3. the processing unit of copper-containing wastewater as described in claim 1, which is characterized in that the agitating device include agitating shaft and
Paddle, the agitating shaft are vertically arranged, and one end of the mixing shaft is connected with the driving motor being arranged in outside autoclave body, and agitating shaft is another
End is protruded into inside autoclave body and close to autoclave body bottom, and the paddle is arranged on agitating shaft, and paddle includes cross bar and several
Stirring rod, wherein cross bar is connected with agitating shaft bottom end, and the shape and autoclave body bottom shape of cross bar are adapted, and stirring rod is along stirring
The distribution of axis axially spaced-apart, each stirring rod are separately positioned on the top of neighbouring each first evaporation plate and the second evaporation plate.
4. the processing unit of the copper-containing wastewater as described in claims 1 to 3 is any, which is characterized in that the pretreatment unit according to
It is secondary include lime reaction slot, it is lime precipitation slot, pH adjustment tank I, oxidation reaction slot, pH adjustment tank II, coagulation tank, flocculation tank, heavy
Shallow lake slot, neutralization chamber and Rinsing Area.
5. the processing unit of the copper-containing wastewater as described in claims 1 to 3 is any, which is characterized in that the condensate liquid disposition is single
Member successively includes total conditioning tank, anaerobic pond, aerobic tank.
6. the processing unit of the copper-containing wastewater as described in claims 1 to 3 is any, which is characterized in that the hot steam condensed water
The steam condensate (SC) collected in collecting pit is back to the preparation of chemical precipitation medicament in pretreatment unit.
7. the processing unit of the copper-containing wastewater as described in claims 1 to 3 is any, which is characterized in that the body material is to ward off
Glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910135400.6A CN109734234A (en) | 2019-02-22 | 2019-02-22 | A kind of processing unit of copper-containing wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910135400.6A CN109734234A (en) | 2019-02-22 | 2019-02-22 | A kind of processing unit of copper-containing wastewater |
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Application publication date: 20190510 |