CN108751531A - High-salt wastewater concentrates preprocess method and system - Google Patents
High-salt wastewater concentrates preprocess method and system Download PDFInfo
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- CN108751531A CN108751531A CN201811019413.9A CN201811019413A CN108751531A CN 108751531 A CN108751531 A CN 108751531A CN 201811019413 A CN201811019413 A CN 201811019413A CN 108751531 A CN108751531 A CN 108751531A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/20—Halides
- C01F11/24—Chlorides
- C01F11/30—Concentrating; Dehydrating; Preventing the adsorption of moisture or caking
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F2001/007—Processes including a sedimentation step
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
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- Water Supply & Treatment (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of high-salt wastewater concentration preprocess method and systems, and the method comprising the steps of, and A. clarifies high-salt wastewater；Step B. will slough carbonate after the pH value adjustment of the high-salt wastewater after clarification to 2~6；Step C. filters the suspended matter in high-salt wastewater.The system includes the clarifying basin, decarbonizer, filter being sequentially connected；The means for feeding acid for further including the chemicals dosing plant being connect with clarifying basin and being connected among clarifying basin and decarbonizer.Preprocess method and system are concentrated with the high-salt wastewater of above-mentioned steps and above structure, it is designed specifically for the high-salt wastewater generated in polysilicon production process, step by step by high-salt wastewater silica residue, obtain more pure high-salt wastewater after carbanion, so that after being evaporated condensing crystallizing to high-salt wastewater, more pure calcium chloride crystals are obtained.
Description
Technical field
Pretreated method and system are carried out to the high-salt wastewater generated in polysilicon production process the present invention relates to a kind of.
Background technology
Polysilicon is a kind of form of elemental silicon.When the elemental silicon of melting solidifies under the conditions of supercooling, silicon atom is with Buddha's warrior attendant
Stone lattice morphologic arrangement grows up to the different crystal grain of high preferred orientation at many nucleus, such as these nucleus, then these crystal grain combine,
Just crystallize into polysilicon.
The waste water generated in polysilicon production process can be divided into two parts：The acid waste water of chloride ion-containing and not chloride ion-containing
Acid waste water.
The acid waste water of chloride ion-containing is not mainly derived from：(recirculated water cycles of concentration is 5 to closed cooling tower system sewerage
Again), the nitric acid waste water of post-processing cleaning product.The wastewater source of chloride ion-containing in：The chloride ion-containing generated in production process
Waste residue absorbs the acid for the chloride ion-containing to be formed by the hydrogen chloride, the chlorosilane exhaust gas that are generated in water dissolution and production process by water
Property waste water.
Applicants have invented a kind of polysilicon zero emission method of wastewater, to the spent acidic of the chloride ion-containing from production system
Water neutralized, settled, is clarified and is obtained clarification recycle-water, then clarification recycle-water is sent to production system recycling, and at it
Progress evaporating, concentrating and crystallizing obtains solid calcium chloride after absorbing chlorion saturation；Evaporation condensed water is sent to cooling tower as supplement
Water.
Clarification recycle-water needs to be evaporated condensing crystallizing after absorbing chlorion saturation, is also needed to before condensing crystallizing
It is pre-processed.Existing pretreatment mode is directed to coal chemical industry and other high-salt wastewaters mostly, due in polysilicon production process
Containing silica, silicate etc. in the high-salt wastewater of generation so that existing pretreatment system is unable to operate normally at all, and
And permanent damage can be generated to equipment.
Invention content
In view of this, the present invention provides a kind of high-salt wastewater concentration preprocess method and system, by production of polysilicon mistake
High-salt wastewater is generated in journey pre-processed before condensing crystallizing, removes silica, carbonate and the suspension in waste water
Object so that waste water evaporative crystallization is more pure calcium chloride.
In order to solve the above technical problems, the technical scheme is that：A kind of high-salt wastewater concentration preprocess method, it is special
Sign is to include the following steps：
Step A. clarifies high-salt wastewater；
Step B. will slough carbonate after the pH value adjustment of the high-salt wastewater after clarification to 2~6；
Step C. filters the suspended matter in high-salt wastewater.
As an improvement flocculant, coagulant, ferric trichloride, milk of lime are added in step A except two in high-salt wastewater
Silica.
As an improvement the flocculant, coagulant, ferric trichloride, milk of lime addition mass ratio be 0.001~
0.002: 0.02~0.03: 2.0~4.7: 1.2~2.
As a preferred embodiment, the flocculant, ferric trichloride, milk of lime addition temperature are maintained at 30~40 DEG C.
As an improvement in step B into high-salt wastewater add dilute hydrochloric acid adjust pH value, the dilute hydrochloric acid it is a concentration of
25~35%, acid adding amount is 100~500mg/h.
As a preferred embodiment, slough carbonate using decarbonizer in step B, when the decarbonizer decarburization temperature be 102~
106 DEG C, pressure is -0.09~-0.07MPa, and liquid level is 1.4~1.6m.
As an improvement being filtered using more medium filter in step C, the more medium filter inlet and outlet pressure
Difference≤0.15MPa；Temperature is 30~40 DEG C；Air purge pressure >=0.4MPa.
The present invention also provides a kind of high-salt wastewaters to concentrate pretreatment system, it is characterised in that：Including the clarification being sequentially connected
Pond, decarbonizer, filter；Further include the chemicals dosing plant being connect with clarifying basin and be connected among clarifying basin and decarbonizer plus
Sour device.
As a preferred embodiment, the clarifying basin is high efficiency clarification tank, the filter is more medium filter.
As an improvement the high efficiency clarification tank includes pond body, the pond body is divided into the reaction tank being sequentially communicated, clear
Clear pond, clean solution tank；Agitating device and the dosing mouth for being connect with chemicals dosing plant are provided in the reaction tank；The clarification
Pond top is provided with filter device, and lower part is provided with the inclined plate for assisting sedimentation；Be additionally provided in clarifying basin hang mud device and
Mud discharging mouth；
The decarbonizer includes hydrops tank, and the hydrops tank top is provided with vacuum orifice, the hydrops pot bottom setting
There is steam inlet；
The more medium filter includes tank body, is laid with several filtering in the tank body from fine to coarse from the bottom to top and is situated between
Matter；The tank body top is provided with feed inlet and backwash discharge port, and the tank body lower part is provided with discharge port and backwash feed inlet；
The chemicals dosing plant includes medicine-chest and the blender that is arranged in medicine-chest；Be provided on the medicine-chest dosing mouth,
Drug pipeline for being connect with high efficiency clarification tank and it is arranged and goes out Teat pipette on drug pipeline；
The means for feeding acid includes sour case and the blender that is arranged in sour case；It is described acid case on be provided with acid-adding port,
Drug pipeline and it is arranged and goes out Teat pipette on drug pipeline.
The invention has the beneficial effects that：Preprocess method is concentrated with the high-salt wastewater of above-mentioned steps and above structure
And system, it is designed specifically for the high-salt wastewater generated in polysilicon production process, step by step by two in high-salt wastewater
More pure high-salt wastewater is obtained after silica residue, carbanion so that concentration knot is being evaporated to high-salt wastewater
After crystalline substance, more pure calcium chloride crystals are obtained.So that in the polysilicon zero emission method of wastewater of applicant's invention, contain
There is the high-salt wastewater of chlorion that can be dealt carefully with, whole system is allowed to realize zero-emission.
Description of the drawings
Fig. 1 is the flow chart of the present invention.
Fig. 2 is the system diagram of the present invention.
Fig. 3 is the structural schematic diagram of high efficiency clarification tank.
Fig. 4 is the structural schematic diagram of decarbonization device.
Fig. 5 is the structural schematic diagram of more medium filter.
Fig. 6 is the structural schematic diagram of chemicals dosing plant.
Fig. 7 is the structural schematic diagram of means for feeding acid.
It is marked in figure：11 feed inlets, 12 agitating devices, 13 dosing mouths, 14 agitating devices, 15 reaction tanks, 16 scrapers, 17
Clarifying basin, 18 clean solution tanks, 19 purified liquor outlets, 110 agitating paddles, 111 deflected current walls, 112 inclined plates, 113 mud discharging mouths, 114 filter devices；
21 vacuum orifices, 22 sieve plates, 23 hydrops tanks, 24 liquid level gauges, 25 supporting racks, 26 material inlets, 27 logistics refluxing openings,
28 steam inlets, 29 material outlets；
31 valves, 32 feed inlets, 33 backwash feed inlets, 34 air purge air inlets, 35 exhaust outlets, 36 pressure gauges, 37 backwashes go out
Material mouth, 38 discharge ports, 39 discharge gates.
41 dosing mouths, 42 medicine-chests, 43 drain mouth, 44 blenders, 45 go out Teat pipette；
51 acid-adding ports, 52 sour casees, 53 drain mouth, 54 blenders, 55 go out sour pump；
Specific implementation mode
In order to make those skilled in the art more fully understand technical scheme of the present invention, With reference to embodiment
The present invention is described in further detail.
As shown in Figure 1, the present invention provides a kind of high-salt wastewater concentration preprocess method, include the following steps：
Step A. clarifies high-salt wastewater；Desiliconizing agent is added during clear：Flocculant, coagulant, trichlorine
Change iron, milk of lime except the silica in high-salt wastewater.The quality that the flocculant, coagulant, ferric trichloride, milk of lime add
Ratio is 0.001~0.002: 0.02~0.03: 2.0~4.7: 1.2~2.Addition temperature is maintained at 30~40 DEG C.
It is added shown in the following table of situation：
| Medicament | Active principle content | Additive amount of medicament (g/L) |
| Milk of lime | 50% | 1.2-2 |
| FeCl3·6H2O | 99.5% | 2.0-4.7 |
| PAC | 30% | 0.02~0.03 |
| PAM | 90% (molecular weight 12,000,000) | 0.001~0.002 |
Below by way of several experiments proving the effect of desiliconizing agent.
Experiment 1：FeCl36H2O amounts and sedimentation time are to removing silica silicon influential effect
It takes the waste water of 4 400mL, number 1#~4#, wherein 1# to do blank, surveys raw water pH and silicone content, 2#
~4# is separately added into milk of lime 0.8g, 2# addition FeCl36H2O1.07g, 3# addition FeCl36H2O1.57g, 4# and adds
Enter FeCl36H2O1.87g, the PAM configured and PAC solution 3ml is added in another 2#~4#.Supernatant is every two hours taken to survey one
Secondary dioxide-containing silica and pH.Final experimental result is as follows：
Conclusion：1, FeCl36H2O, which has, removes silicon effect, and at present, FeCl36H2O amounts is added and are taking centre
It is complete during quality control to being sent to from reagent is prepared except silicon effect is best 2, FeCl36H2O is except the silicon used time is shorter when value
At reaction, time silicone content hereafter does not continue to reduce.
Since there is desiliconizing agent reduction pH value of solution to make solution in acidity, and so that solution is in yellow, it is impossible to be used in evaporate dense
Contracting (evaporation concentration equipment is dual phase steel and titanium, and meeting acid can corrode)；It is intended that and adjusts waste water PH to neutral or weak base with milk of lime
Property.
Test influence (targets of the 2.PH to high-salt wastewater solution：Realize upper solution clarification)
400mL or so waste water is taken, observation is transparent, surveys pH9.53；
Take 1.07gFeCl36H2O solids soluble in water, color is in yellow, pH3.72；
It is gradually added into milk of lime, and surveys pH variations, when milk of lime is added, solution colour starts from yellow to red, and gradually adds
It is deep, with milk of lime dosage, apparent floccule is generated in solution, is precipitated after standing, and supernatants after precipitation color reverts to
Yellow, pH gradually rise；
When to ultimately join lime breast amount be 0.93g, pH value of solution 7.27, color becomes colorless substantially after solution left standstill
Bright, experiment terminates.
Experiment conclusion：It is in terms of 9.53 by raw water pH, it is 7 or so that FeCl36H2O and milk of lime, which is added, to reach pH, needs two
Person's mass ratio is FeCl36H2O: milk of lime=1: 0.75 or so；PH is adjusted to by way of milk of lime is added neutral or weak
Alkalinity can be such that the Fe3+ in FeCl36H2O is precipitated in a manner of precipitating, and solution is made to reach water white transparency, to practice
It helps.
Experiment FeCl36H2O additions are drawn a conclusion to the influence except silicon effect with experiment 2.
Empirically 2 results survey the different FeCl36H2O of addition except silicon effect for experiment 3.
Take 4 400mL waste water, number 1#, 2#, 3#, 4#, be separately added into FeCl36H2O amounts be 0g, 1.07g,
Corresponding lime is added to test 2 gained FeCl36H2O and milk of lime ratio in 1.57g, 1.87g (1# is blank control)
Breast stirs evenly CepHHou Song quality control departments analysis silicone content after standing.
PH is measured between 6~7, water sample precipitation is apparent, and supernatant is in clear.
Supernatant dioxide-containing silica is as follows：
Conclusion：It is more preferable under acid condition during FeCl36H2O relatively tests 1 except silicon effect in neutral conditions, the reason is that more
A high proportion of milk of lime makes FeCl36H2O be easier to generate iron hydroxide, to reach flocculated effect；With 400mL waste water
Meter is added FeCl36H2O amounts in 1.47g except silicon effect has reached higher level, removes silicon rate 93%, increasing
FeCl36H2O dose-effects fruit does not improve substantially.
Step B. will slough carbonate after the pH value adjustment of the high-salt wastewater after clarification to 2~6；It is added into high-salt wastewater
Dilute hydrochloric acid adjusting pH value, a concentration of the 25~35% of the dilute hydrochloric acid, acid adding amount is 100~500mg/h.Then decarbonizer is utilized
Slough carbonate, temperature is 102~106 DEG C when the decarbonizer decarburization, and pressure is -0.09~-0.07MPa, liquid level is 1.4~
1.6m。
Step C. filters the suspended matter in high-salt wastewater.It is filtered using more medium filter, the multimedium mistake
Filter inlet outlet pressure differential≤0.15MPa；Temperature is 30~40 DEG C；Air purge pressure >=0.4MPa.
As shown in Fig. 2, the present invention also provides a kind of high-salt wastewaters to concentrate pretreatment system, including the clarification being sequentially connected
Pond, decarbonizer, filter；Further include the chemicals dosing plant being connect with clarifying basin and be connected among clarifying basin and decarbonizer plus
Sour device.The clarifying basin is high efficiency clarification tank, and the filter is more medium filter.
The high efficiency clarification tank is as shown in figure 3, include pond body, the pond body is divided into the reaction tank 15 being sequentially communicated, clear
Clear pond 17, clean solution tank 18；Agitating device 12, agitating device 14 are provided in the reaction tank 15 and for connecting with chemicals dosing plant
The dosing mouth 13 connect；17 top of the clarifying basin is provided with filter device 114, and lower part is provided with the inclined plate for assisting sedimentation
112；It is additionally provided in clarifying basin 17 and hangs mud device 16 and mud discharging mouth 113.Purified liquor outlet 19 is provided in clean solution tank 18, after clarification
Clear liquid discharge.Several deflected current walls 111 are vertically arranged in pond body, to increase stroke of the material in pond body.Agitating device 12,
Agitating paddle 110 is both provided on agitating device 14.High-salt wastewater enters reaction tank 15 from feed inlet 11, first with agitating device
12 are stirred, and desiliconizing agent then is added by chemicals dosing plant, and clarifying basin 17 is entered after stirring evenly.In clarifying basin, dioxy
With desiliconizing agent flocculation sediment occurs for SiClx, and finally the sludge to precipitate is discharged by mud discharging mouth 113 using scraper 16.It crosses
Filter device 114 prevents sludge from entering clean solution tank 18.
As shown in figure 4, the decarbonizer includes hydrops tank 23,23 top of the hydrops tank is provided with vacuum orifice 21,
23 bottom of hydrops tank is provided with steam inlet 28；Hydrops tank 23 is supported using supporting rack 25, and liquid is provided on tank body
Position meter 24.23 top of hydrops tank is provided with material inlet 26, and bottom is provided with material outlet 29.Further include being arranged in hydrops tank 23
Interior 22 plate of sieve, for filtering the solid residue in high-salt wastewater.It removes the high-salt wastewater after silica and passes through material inlet
26 enter hydrops tank 23, while carrying out vacuumize process to tank body and being heated using steam.So that the carbonate in high-salt wastewater
It is parsed into carbon dioxide discharge, last material is discharged from material outlet 29.
As shown in figure 5, the more medium filter includes tank body, if being laid with from fine to coarse from the bottom to top in the tank body
Dry kind of filter medium；Filter medium is mainly quartz sand and activated carbon.The tank body top is provided with feed inlet 32 and backwash goes out
Material mouth 37, the tank body lower part are provided with discharge port 38 and backwash feed inlet 33；Tank base is provided with discharge gate 39.It can be with
Air purge air inlet 34 and exhaust outlet 35 are set.Pressure gauge 36 is provided on tank body, each pipeline is controlled by valve 31 and is opened and closed.
The high-salt wastewater for eliminating silica and carbanion passes through multi-medium filtering, becomes qualified production water, can lead to lower one
Process is evaporated condensing crystallizing.
As shown in fig. 6, chemicals dosing plant includes medicine-chest 42 and the blender being arranged in medicine-chest 42 44；On the medicine-chest 42
It is provided with dosing mouth 41, the drug pipeline for being connect with high efficiency clarification tank and what is be arranged on drug pipeline goes out Teat pipette 45；
Further include draining mouth 43 for clear up medicine-chest 42.
As shown in fig. 7, means for feeding acid includes sour case 52 and the blender being arranged in sour case 52 54；On the acid case 52
It is provided with acid-adding port 51, drug pipeline and what is be arranged on drug pipeline goes out Teat pipette 55.Further include for clearing up sour case 52
Drain mouth 53.
Desiliconizing agent reaction is added in high-salt wastewater containing silica 1 80ppm, carbonate 38ppm in high efficiency clarification tank
Flocculation clarification afterwards so that silica < 10ppm.Then then the pH value for adjusting high-salt wastewater by diluted acid takes off again to 2~6
Carbonate is removed in carbon device so that carbonate < 8ppm.Finally pass through more medium filter, removes the suspension in high-salt wastewater
Object, the turbidity < 3NUT made become turbidity < 3NUT；Silica < 10ppm；The qualified production water of carbonate < 8ppm.
It the above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
The limitation of the present invention, protection scope of the present invention should be subject to claim limited range.For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, these change
Protection scope of the present invention is also should be regarded as into retouching.
Claims (10)
1. a kind of high-salt wastewater concentrates preprocess method, it is characterised in that include the following steps：
Step A. clarifies high-salt wastewater；
Step B. will slough carbonate after the pH value adjustment of the high-salt wastewater after clarification to 2~6；
Step C. filters the suspended matter in high-salt wastewater.
2. a kind of high-salt wastewater according to claim 1 concentrates preprocess method, it is characterised in that：Wadding is added in step A
Solidifying agent, coagulant, ferric trichloride, milk of lime are except the silica in high-salt wastewater.
3. a kind of high-salt wastewater according to claim 2 concentrates preprocess method, it is characterised in that：The flocculant mixes
The mass ratio that solidifying agent, ferric trichloride, milk of lime add is 0.001~0.002: 0.02~0.03: 2.0~4.7: 1.2~2.
4. a kind of high-salt wastewater according to claim 2 concentrates preprocess method, it is characterised in that：The flocculant, three
Iron chloride, milk of lime addition temperature are maintained at 30~40 DEG C.
5. a kind of high-salt wastewater according to claim 1 concentrates preprocess method, it is characterised in that：To with high salt in step B
Addition dilute hydrochloric acid adjusting pH value in waste water, a concentration of the 25~35% of the dilute hydrochloric acid, acid adding amount is 100~500mg/h.
6. a kind of high-salt wastewater according to claim 1 concentrates preprocess method, it is characterised in that：Using de- in step B
Carbon device sloughs carbonate, and temperature is 102~106 DEG C when the decarbonizer decarburization, and pressure is -0.09~-0.07MPa, and liquid level is
1.4~1.6m.
7. a kind of high-salt wastewater according to claim 1 concentrates preprocess method, it is characterised in that：Using more in step C
Medium filter is filtered, the more medium filter inlet outlet pressure differential≤0.15MPa；Temperature is 30~40 DEG C；Air purge pressure
Power >=0.4MPa.
8. a kind of high-salt wastewater concentrates pretreatment system, it is characterised in that：Including the clarifying basin, decarbonizer, filtering being sequentially connected
Device；The means for feeding acid for further including the chemicals dosing plant being connect with clarifying basin and being connected among clarifying basin and decarbonizer.
9. a kind of high-salt wastewater according to claim 8 concentrates pretreatment system, it is characterised in that：The clarifying basin is height
Clarifying basin is imitated, the filter is more medium filter.
10. a kind of high-salt wastewater according to claim 9 concentrates pretreatment system, it is characterised in that：
The high efficiency clarification tank includes pond body, and the pond body is divided into the reaction tank, clarifying basin, clean solution tank being sequentially communicated；It is described
Agitating device and the dosing mouth for being connect with chemicals dosing plant are provided in reaction tank；The clarifying basin top is provided with filtering
Device, lower part are provided with the inclined plate for assisting sedimentation；It is additionally provided in clarifying basin and hangs mud device and mud discharging mouth；
The decarbonizer includes hydrops tank, and the hydrops tank top is provided with vacuum orifice, and the hydrops pot bottom is provided with steaming
Vapour entrance；
The more medium filter includes tank body, is laid with several filter medium in the tank body from fine to coarse from the bottom to top；
The tank body top is provided with feed inlet and backwash discharge port, and the tank body lower part is provided with discharge port and backwash feed inlet；
The chemicals dosing plant includes medicine-chest and the blender that is arranged in medicine-chest；It is provided with dosing mouth on the medicine-chest, is used for
The drug pipeline that is connect with high efficiency clarification tank and it is arranged and goes out Teat pipette on drug pipeline；
The means for feeding acid includes sour case and the blender that is arranged in sour case；It is provided with acid-adding port, drug on the acid case
Pipeline and it is arranged and goes out Teat pipette on drug pipeline.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109607916A (en) * | 2018-12-19 | 2019-04-12 | 自贡市轻工业设计研究院有限责任公司 | A kind of polysilicon high-salt wastewater Treatment and recovery technique |
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| CN205933473U (en) * | 2016-08-15 | 2017-02-08 | 博天环境工程（北京）有限公司 | Strong brine minimizing system |
| CN107651774A (en) * | 2017-09-26 | 2018-02-02 | 上海晶宇环境工程股份有限公司 | Coal chemical industry strong brine silicon removing process and its special purpose device |
| CN209081582U (en) * | 2018-08-31 | 2019-07-09 | 内蒙古通威高纯晶硅有限公司 | Pretreatment system is concentrated in high-salt wastewater |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109607916A (en) * | 2018-12-19 | 2019-04-12 | 自贡市轻工业设计研究院有限责任公司 | A kind of polysilicon high-salt wastewater Treatment and recovery technique |
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