CN209537168U - A kind of high-salt wastewater two-stage concentration and evaporation pretreatment system - Google Patents
A kind of high-salt wastewater two-stage concentration and evaporation pretreatment system Download PDFInfo
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- CN209537168U CN209537168U CN201920178438.7U CN201920178438U CN209537168U CN 209537168 U CN209537168 U CN 209537168U CN 201920178438 U CN201920178438 U CN 201920178438U CN 209537168 U CN209537168 U CN 209537168U
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Abstract
The utility model discloses a kind of high-salt wastewater two-stage concentration and evaporation pretreatment systems comprising former pond, the first sand filtering device, the first ultra filtration unit, nanofiltration device, reverse osmosis units, produces pond, level-one concentrated water pond, second level concentrated water pond, removes silicon sedimentation basin, the second sand filtering device, the second ultra filtration unit, organic film condensing device, sludge concentration tank efficient sedimentation tank；The water outlet of former pond is connected to the water inlet of efficient sedimentation tank, the water outlet of efficient sedimentation tank is connected to the water inlet of the first sand filtering device, the water outlet of first sand filtering device is connected to the water inlet of the bag filter of the first ultra filtration unit, the utility model realizes the concentration to high-salt wastewater by reverse osmosis unit and improves Sewage treatment rate, salinity in waste water is concentrated, reduce the scale of subsequent evaporation device and guarantees the operation steady in a long-term of evaporative crystallization unit, be conducive to improve simultaneously and produce the quality that salt produces nitre, the quality of evaporation condensate, it is realized with easy, the high advantage for the treatment of effeciency.
Description
Technical field:
The utility model relates to technical field of waste water processing more particularly to a kind of high-salt wastewater two-stage concentration and evaporation to pre-process
System.
Background technique:
High-salt wastewater ingredient is complex, has the characteristics that water quality and quantity fluctuation is big, salinity a large amount is high, toxicity is big, TDS
(total dissolved solid, the general name of the inorganic salts and organic salt that are dissolved in water) is up to 10000~50000mg/L or so, especially
It is Coal Chemical Engineering Project, and desalination exceptionally further includes having other pollutants in the high-salt wastewater generated.
At present there are mainly two types of the highly concentrated brine disposal schemes of Coal Chemical Engineering Project, one is send high-salt wastewater to evaporation
The pool, using the evaporability evaporation water of environment itself, evaporation pond technology is originally experienced, and natural environment influence is larger, and operating condition is simultaneously
Undesirable, the evaporation of high strong brine is not fallen, and because bed mud be not easy the problems such as disposing lead to it not and be it is a kind of steadily, sustainably
Treatment method for high-salinity wastewater；Another disposal method of high-salt wastewater be by concentration pretreatment after using evaporative crystallization technique into
One step recycles moisture, produces crystal salt, converts solid state crystallization salt for high-salt wastewater, concentration preprocess method includes concentration and place
The super-pressure reverse osmosis membrane processings such as reason, the concentration of HERO film, DTRO/STRO, electrodialysis and nanofiltration processing；This method can be one
Determine to realize " zero-emission " in degree, be the technique relatively approved at this stage, but there are following technologies to ask for traditional evaporative crystallization technique
Topic: (1) strong brine water is larger, and a large amount of strong brine progress crystallization treatment energy consumption is big, operating cost is high；(2) due to height
Salt water TDS is generally up to that 10000~50000mg/L is even higher, and what is be enriched with together with salinity further includes other pollutant impurity,
Therefore salt resource rate and salt quality cannot be effectively ensured.
Utility model content:
The purpose of this utility model is to provide a kind of safe and reliable, Yi Shixian high-salt wastewater two-stage concentration and evaporations to locate in advance
Reason system.
The purpose of this utility model is implemented by following technical solution:
A kind of high-salt wastewater two-stage concentration and evaporation pretreatment system comprising former pond, efficient sedimentation tank, the first sand filtration dress
Set, the first ultra filtration unit, nanofiltration device, reverse osmosis units, produce pond, level-one concentrated water pond, second level concentrated water pond, except silicon sedimentation basin,
Second sand filtering device, the second ultra filtration unit, organic film condensing device, sludge concentration tank；
The water outlet of the former pond is connected to the water inlet of the efficient sedimentation tank, the water outlet of the efficient sedimentation tank
It is connected to the water inlet of first sand filtering device, the bag of the water outlet of first sand filtering device and first ultra filtration unit
The water inlet of formula filter is connected to, the water inlet at the production mouth of a river and the nanofiltration device of the hyperfiltration membrane assembly of first ultra filtration unit
Mouth connection, the water inlet of the core type filter for producing the mouth of a river and first reverse osmosis unit of reverse osmosis units of the nanofiltration device
The concentrated water outlet of connection, the reverse osmosis membrane assembly of first reverse osmosis unit is connected to the water inlet in level-one concentrated water pond,
The water outlet in level-one concentrated water pond is connected to the water inlet of the core type filter of second reverse osmosis unit of reverse osmosis units,
The second reverse osmosis unit concentrated water outlet is connected to the water inlet in second level concentrated water pond, the water outlet in second level concentrated water pond
It is described except the water outlet of silicon sedimentation basin and the water inlet of second sand filtering device connect with described except silicon sedimentation basin water inlet is connected to
Logical, the water outlet of second sand filtering device is connected to the water inlet of the bag filter of second ultra filtration unit, and described the
The production mouth of a river of the hyperfiltration membrane assembly of two ultra filtration units is connected to the water inlet of organic film condensing device, the organic film concentration
The production mouth of a river of device is connected to evaporative crystallization unit；
The concentrated water outlet of the hyperfiltration membrane assembly of first ultra filtration unit is connected to the water inlet of the efficient sedimentation tank；
The production mouth of a river of the reverse osmosis membrane assembly of first reverse osmosis unit is connected to the production pond, second reverse osmosis
The production mouth of a river of saturating device is connected to the production pond；
The concentrated water outlet of the hyperfiltration membrane assembly of second ultra filtration unit is connected to the water inlet in second level concentrated water pond；
The concentrated water outlet of organic film condensing device is connected to the entrance of biochemical treatment unit；
The efficient sedimentation tank and the mud mouth except silicon sedimentation basin are connected to the entrance of the sludge concentration tank；
The concentrated water outlet of the nanofiltration device is connected to the water inlet of ozone-oxidizing device, and the ozone-oxidizing device goes out
The mouth of a river is connected to the evaporative crystallization unit.
Further, the ultra filtration unit includes bag filter and hyperfiltration membrane assembly, the water outlet of the bag filter
Mouth is connected to the water inlet of the hyperfiltration membrane assembly.
Further, the reverse osmosis units include first reverse osmosis unit and second reverse osmosis unit, institute
It states the first reverse osmosis unit and second reverse osmosis unit includes core type filter and reverse osmosis membrane assembly, the core type mistake
Filter is connected to the reverse osmosis membrane assembly by water pump.
Further, the efficient sedimentation tank and described remove in silicon sedimentation basin are installed with doser.
The advantages of the utility model: the utility model provides a kind of high-salt wastewater two-stage concentration and evaporation pretreatment system, will
High-salt wastewater pass sequentially through efficient sedimentation tank, the first sand filtering device, the first ultra filtration unit, nanofiltration device with reduce hardness, turbidity,
The reverse osmosis unit processing that nanofiltration produces water feeding reverse osmosis units is then carried out decrement concentration, produces water and reach reuse by SS and COD
Water water standard is simultaneously delivered to reuse unit, wherein the water rate of recovery of the first reverse osmosis unit reaches 70% or more, the second reverse osmosis
The water rate of recovery of saturating device reaches 45% or more, is reduced and is concentrated by two-stage, greatly reduces into evaporative crystallization unit
The amount of high-salt wastewater can effectively reduce the energy consumption of evaporative crystallization processing unit, reduce entreprise cost；High-salt wastewater after concentration
Middle silicone content rises, therefore concentrated water is sent into except silicon sedimentation basin carries out desiliconization processing, except the supernatant overflow of silicon sedimentation basin enters second
Sand filtering device further removes SS in waste water, enters at the second ultra filtration unit through the filtered high-salt wastewater of the second sand filtering device
Reason, the second ultra filtration unit produce water and enter organic film condensing device, further remove the biggish organic matter of partial size in water removal, final organic
Film condensing device production water enters evaporative crystallization unit and is evaporated crystallization treatment, and organic film condensing device concentrated water enters biochemical treatment
Cell processing wherein efficient sedimentation tank and is sent into sludge concentration tank except the precipitating that generates in silicon sedimentation basin and is further processed.
The utility model to the concentration of high-salt wastewater and improves Sewage treatment rate by reverse osmosis unit realization, i.e., as far as possible
Salinity in waste water is improved, the scale of subsequent evaporation device is reduced, guarantees the operation steady in a long-term of evaporative crystallization unit, reduces investment
And it is energy saving, while the hardness in waste water, total silicon, SS are removed by chemical precipitation, sand filtration and nanofiltration processing,
The reverse osmosis membrane assembly fouling blockage for effectively preventing reverse osmosis units ensure that the quality and salt resource rate of salt and nitre, can
The quality of subsequent evaporation crystalline element condensate liquid is improved, there is certain social benefit and economic benefit.
Detailed description of the invention:
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the corresponding system schematic of embodiment 1.
Fig. 2 is the corresponding process flow chart of embodiment 1.
Wherein: former pond 1, efficient sedimentation tank 2, water pump 3, sludge concentration tank 4, the first sand filtering device 5, the first ultra filtration unit
6, bag filter 6.1, hyperfiltration membrane assembly 6.2, nanofiltration device 7, reverse osmosis units 8, the first reverse osmosis unit 8.1, second are anti-
Permeability apparatus 8.2 produces pond 9, removes silicon sedimentation basin 10, the second sand filtering device 11, the second ultra filtration unit 12, organic film condensing device
13, evaporative crystallization unit 14, ozone-oxidizing device 15, level-one concentrated water pond 16, second level concentrated water pond 17, biochemical treatment unit 18.
Specific embodiment:
Below by the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
Embodiment 1:
As shown in Figs. 1-2, a kind of high-salt wastewater two-stage concentration and evaporation pretreatment system comprising former pond 1, High-rate sedimentation
Pond 2, the first ultra filtration unit 6, nanofiltration device 7, reverse osmosis units 8, produces pond 9, level-one concentrated water pond 16, two at first sand filtering device 5
Grade concentrated water pond 17, except silicon sedimentation basin 10, the second sand filtering device 11, the second ultra filtration unit 12, organic film condensing device 13, sludge it is dense
Contracting pond 4；
The water outlet of former pond 1 is connected to the water inlet of efficient sedimentation tank 2, the water outlet of efficient sedimentation tank 2 and the first sand
The water inlet for filtering device 5 is connected to, the water inlet of the bag filter 6.1 of the water outlet of the first sand filtering device 5 and the first ultra filtration unit 6
Mouth connection, the production mouth of a river of the hyperfiltration membrane assembly 6.2 of the first ultra filtration unit 6 are connected to the water inlet of nanofiltration device 7, nanofiltration device 7
The production mouth of a river be connected to the water inlet of the core type filter of 8 first reverse osmosis unit 8.1 of reverse osmosis units, the first reverse osmosis unit
8.1 reverse osmosis membrane assembly concentrated water outlet be connected to the water inlet in level-one concentrated water pond 16, the water outlet in level-one concentrated water pond 16 and
The water inlet of the core type filter of 8 second reverse osmosis unit 8.2 of reverse osmosis units is connected to, and 8.2 concentrated water of the second reverse osmosis unit goes out
Mouth is connected to the water inlet in second level concentrated water pond 17, and the water outlet in second level concentrated water pond 17 is removed with except 10 water inlet of silicon sedimentation basin is connected to
The water outlet of silicon sedimentation basin 10 is connected to the water inlet of the second sand filtering device 11, the water outlet of the second sand filtering device 11 with the second surpass
Filter unit 12 bag filter 6.1 water inlet connection, the production mouth of a river of the hyperfiltration membrane assembly 6.2 of the second ultra filtration unit 12 with have
The water inlet of machine film condensing device 13 is connected to, and the production mouth of a river of organic film condensing device 13 is connected to evaporative crystallization unit 14；
The concentrated water outlet of the hyperfiltration membrane assembly 6.2 of first ultra filtration unit 6 is connected to the water inlet of efficient sedimentation tank 2；
The production mouth of a river of the reverse osmosis membrane assembly of first reverse osmosis unit 8.1 is connected to is produced from pond 9, the second reverse osmosis unit
The 8.2 production mouth of a river is connected to is produced from pond 9；
The concentrated water outlet of the hyperfiltration membrane assembly 6.2 of second ultra filtration unit 12 is connected to the water inlet in second level concentrated water pond 17；
The concentrated water outlet of organic film condensing device 13 is connected to the entrance of biochemical treatment unit 18；
Efficient sedimentation tank 2 and except the mud mouth of silicon sedimentation basin 10 is connected to the entrance of sludge concentration tank 4；Efficient sedimentation tank
2 and except being installed with doser in silicon sedimentation basin 10；
The concentrated water outlet of nanofiltration device 7 is connected to the water inlet of ozone-oxidizing device 15, the water outlet of ozone-oxidizing device 15
Mouth is connected to evaporative crystallization unit 14.
Ultra filtration unit includes bag filter 6.1 and hyperfiltration membrane assembly 6.2, the water outlet of bag filter 6.1 and ultrafiltration
The water inlet of membrane module 6.2 is connected to.
Reverse osmosis units 8 include the first reverse osmosis unit 8.1 and the second reverse osmosis unit 8.2, the first reverse osmosis unit 8.1
And second reverse osmosis unit 8.2 include core type filter and reverse osmosis membrane assembly, core type filter and reverse osmosis membrane assembly are logical
The connection of water pump 3 is crossed, the processing system structure of the utility model is simple, Yi Shixian, and treatment effeciency is high.
Embodiment 2:
Utilize a kind of high-salt wastewater two-stage concentration and evaporation preprocess method of embodiment 1 comprising following process: process one
Precipitating filtering；Two ultrafiltration of process；Three nanofiltration of process；Four reverse osmosis concentration of process；The precipitating filtering of process five；Six ultrafiltration of process；Work
The concentration of seven organic film of sequence；Wherein:
The precipitating filtering of process one: by pH=8, TDS=60000mg/L, SO in former pond 14 2=15000mg/L, Cl-≤
The high-salt wastewater of 20000mg/L, COD=500mg/L are sent into the High-rate sedimentation of high-salt wastewater two-stage concentration and evaporation pretreatment system
Pond 2 carries out that calcium hydroxide, sodium carbonate, magnesia mixture, PFS, PAM are added in efficient sedimentation tank 2 except hard processing, through chemical precipitation, wadding
After solidifying, Ca is obtained2+=20mg/L, Mg2+=1mg/L, Si2+=30mg/L's removes hard water and sludge, hard water will be gone to be sent into high salt useless
It is filtered processing in first sand filtering device 5 of water two-stage concentration and evaporation pretreatment system, obtain SS=1mg/L removes suspended matter
Water；
Two ultrafiltration of process: suspended matter water is gone to be sent into high-salt wastewater two-stage by what sand filtration in the precipitating filtering of process one was handled
First ultra filtration unit 6 of concentration and evaporation pretreatment system is handled, and is obtained turbidity=2NTU ultrafiltration and is produced water and ultrafiltration concentrated water；
Three nanofiltration of process: the ultrafiltration that hyperfiltration treatment obtains in two ultrafiltration of process is produced into water and is sent into the concentration steaming of high-salt wastewater two-stage
The nanofiltration device 7 for sending out pretreatment system is handled, and is obtained nanofiltration and is produced water and SO4 2=93000mg/L nanofiltration concentrated water；
Four reverse osmosis concentration of process: the nanofiltration that nanofiltration is handled in three nanofiltration of process is produced into water and is sent into high-salt wastewater two-stage
The reverse osmosis units 8 of concentration and evaporation pretreatment system are handled, and obtain pH=8.0, TDS=500mg/L, total hardness (with CaCO3
Meter)=20mg/L, COD=10mg/L reverse osmosis produced water and reverse osmosis concentrated water；
The precipitating filtering of process five: reverse osmosis units 8 in four reverse osmosis concentration of process are handled into obtained reverse osmosis concentrated water and are sent
Enter high-salt wastewater two-stage concentration and evaporation pretreatment system removes silicon sedimentation basin 10, and sodium metaaluminate is added in except silicon sedimentation basin 10,
After chemical precipitation, Si is obtained2+=15mg/L's removes silicon water and sludge, silicon water will be gone to be sent into high-salt wastewater two-stage concentration and evaporation pre-
It is filtered processing in second sand filtering device 11 of processing system, obtained SS=1mg/L's removes suspended matter water；
Six ultrafiltration of process: suspended matter water is gone to be sent into high-salt wastewater two-stage by what sand filtration in the precipitating filtering of process five was handled
Second ultra filtration unit 12 of concentration and evaporation pretreatment system is handled, and is obtained turbidity=2NTU ultrafiltration and is produced water and ultrafiltration concentrated water；
The concentration of seven organic film of process: the ultrafiltration that hyperfiltration treatment obtains in six ultrafiltration of process is produced into water and is sent into high-salt wastewater two-stage
Organic concentration operation is carried out in organic film condensing device 13 of concentration and evaporation pretreatment system, obtains producing water and concentrated water, is produced water and is sent
Enter the evaporative crystallization unit 14 of high-salt wastewater two-stage concentration and evaporation pretreatment system.
Process one and the precipitating filtering of process five: the sludge that sludge enters high-salt wastewater two-stage concentration and evaporation pretreatment system is dense
Contracting pond 4 is handled.
Embodiment 3:
Utilize a kind of high-salt wastewater two-stage concentration and evaporation preprocess method of embodiment 1 comprising following process: process one
Precipitating filtering；Two ultrafiltration of process；Three nanofiltration of process；Four reverse osmosis concentration of process；The precipitating filtering of process five；Six ultrafiltration of process；Work
The concentration of seven organic film of sequence；Wherein:
The precipitating filtering of process one: by pH=7.5, TDS=50000mg/L, SO in former pond 14 2=13000mg/L, Cl-
The high-salt wastewater of=18000mg/L, COD=450mg/L are sent into the efficient heavy of high-salt wastewater two-stage concentration and evaporation pretreatment system
Shallow lake pond 2 carries out that calcium hydroxide, sodium carbonate, magnesia mixture, PFS, PAM are added in efficient sedimentation tank 2 except hard processing, through chemical precipitation,
After flocculation, Ca is obtained2+=16mg/L, Mg2+=0.8mg/L, Si2+=25mg/L's removes hard water and sludge, hard water will be gone to be sent into high
It is filtered processing in first sand filtering device 5 of salt waste water two-stage concentration and evaporation pretreatment system, obtains going for SS=0.8mg/L
Suspended matter water；
Two ultrafiltration of process: suspended matter water is gone to be sent into high-salt wastewater two-stage concentration and evaporation by what sand filtration in process one was handled
First ultra filtration unit 6 of pretreatment system is handled, and is obtained turbidity=2.5NTU ultrafiltration and is produced water and ultrafiltration concentrated water；
Three nanofiltration of process: it is pre- that the ultrafiltration that hyperfiltration treatment obtains in process two is produced into water feeding high-salt wastewater two-stage concentration and evaporation
The nanofiltration device 7 of processing system is handled, and is obtained nanofiltration and is produced water and SO4 2=90000mg/L nanofiltration concentrated water；
Four reverse osmosis concentration of process: the nanofiltration that nanofiltration is handled in process three is produced into water and is sent into the concentration of high-salt wastewater two-stage
The reverse osmosis units 8 for evaporating pretreatment system are handled, and obtain PH=7.5, TDS=450mg/L, total hardness (with CaCO3Meter)=
15mg/L；The reverse osmosis produced water and reverse osmosis concentrated water of COD=8mg/L；
The precipitating filtering of process five: reverse osmosis units 8 in process four are handled to obtained reverse osmosis concentrated water and are sent into high-salt wastewater
Two-stage concentration and evaporation pretreatment system removes silicon sedimentation basin 10, sodium metaaluminate is added in except silicon sedimentation basin 10, through chemical precipitation
Afterwards, Si is obtained2+=13mg/L's removes silicon water and sludge, and silicon water will be gone to be sent into high-salt wastewater two-stage concentration and evaporation pretreatment system
It is filtered processing in second sand filtering device 11, obtained SS=0.8mg/L's removes suspended matter water；
Six ultrafiltration of process: suspended matter water is gone to be sent into high-salt wastewater two-stage concentration and evaporation by what sand filtration in process five was handled
Second ultra filtration unit 12 of pretreatment system is handled, and is obtained turbidity=2.5NTU ultrafiltration and is produced water and ultrafiltration concentrated water；
The concentration of seven organic film of process: the ultrafiltration that hyperfiltration treatment obtains in process six is produced into water and is sent into the concentration of high-salt wastewater two-stage
It evaporates in organic film condensing device 13 of pretreatment system and carries out organic concentration operation, obtain producing water and concentrated water, produce water and be sent into height
The evaporative crystallization unit 14 of salt waste water two-stage concentration and evaporation pretreatment system.
Process one and the precipitating filtering of process five: the sludge that sludge enters high-salt wastewater two-stage concentration and evaporation pretreatment system is dense
Contracting pond 4 is handled.
Embodiment 4:
Utilize a kind of high-salt wastewater two-stage concentration and evaporation preprocess method of embodiment 1 comprising following process: process one
Precipitating filtering；Two ultrafiltration of process；Three nanofiltration of process；Four reverse osmosis concentration of process；The precipitating filtering of process five；Six ultrafiltration of process；Work
The concentration of seven organic film of sequence；Wherein:
The precipitating filtering of process one: by pH=7, TDS=45000mg/L, SO in former pond 14 2=12000mg/L, Cl-=
The high-salt wastewater of 17000mg/L, COD=400mg/L are sent into the High-rate sedimentation of high-salt wastewater two-stage concentration and evaporation pretreatment system
Pond 2 carries out that calcium hydroxide, sodium carbonate, magnesia mixture, PFS, PAM are added in efficient sedimentation tank 2 except hard processing, through chemical precipitation, wadding
After solidifying, Ca is obtained2+=14mg/L, Mg2+=0.7mg/L, Si2+=22mg/L's removes hard water and sludge, hard water will be gone to be sent into high salt
In first sand filtering device 5 of waste water two-stage concentration and evaporation pretreatment system it is filtered processing, obtains SS=0.7mg/L and go to hang
Floating object water；
Two ultrafiltration of process: suspended matter water is gone to be sent into high-salt wastewater two-stage concentration and evaporation by what sand filtration in process one was handled
First ultra filtration unit 6 of pretreatment system is handled, and is obtained turbidity=1.5NTU ultrafiltration and is produced water and ultrafiltration concentrated water；
Three nanofiltration of process: it is pre- that the ultrafiltration that hyperfiltration treatment obtains in process two is produced into water feeding high-salt wastewater two-stage concentration and evaporation
The nanofiltration device 7 of processing system is handled, and is obtained nanofiltration and is produced water and SO4 2=85000mg/L nanofiltration concentrated water；
Four reverse osmosis concentration of process: the nanofiltration that nanofiltration is handled in process three is produced into water and is sent into the concentration of high-salt wastewater two-stage
The reverse osmosis units 8 for evaporating pretreatment system are handled, and obtain pH=7, TDS=400mg/L, total hardness (with CaCO3Meter)=
14mg/L；The reverse osmosis produced water and reverse osmosis concentrated water of COD=7mg/L；
The precipitating filtering of process five: reverse osmosis units 8 in process four are handled to obtained reverse osmosis concentrated water and are sent into high-salt wastewater
Two-stage concentration and evaporation pretreatment system removes silicon sedimentation basin 10, sodium metaaluminate is added in except silicon sedimentation basin 10, through chemical precipitation
Afterwards, Si is obtained2+=15mg/L's removes silicon water and sludge, and silicon water will be gone to be sent into high-salt wastewater two-stage concentration and evaporation pretreatment system
It is filtered processing in second sand filtering device 11, obtained SS=0.6mg/L's removes suspended matter water；
Six ultrafiltration of process: suspended matter water is gone to be sent into high-salt wastewater two-stage concentration and evaporation by what sand filtration in process five was handled
Second ultra filtration unit 12 of pretreatment system is handled, and is obtained turbidity=1.5NTU ultrafiltration and is produced water and ultrafiltration concentrated water；
The concentration of seven organic film of process: the ultrafiltration that hyperfiltration treatment obtains in process six is produced into water and is sent into the concentration of high-salt wastewater two-stage
It evaporates in organic film condensing device 13 of pretreatment system and carries out organic concentration operation, obtain producing water and concentrated water, produce water and be sent into height
The evaporative crystallization unit 14 of salt waste water two-stage concentration and evaporation pretreatment system.
Process one and the precipitating filtering of process five: the sludge that sludge enters high-salt wastewater two-stage concentration and evaporation pretreatment system is dense
Contracting pond 4 is handled.
Claims (4)
1. a kind of high-salt wastewater two-stage concentration and evaporation pretreatment system, which is characterized in that it include former pond, efficient sedimentation tank,
First sand filtering device, nanofiltration device, reverse osmosis units, produces pond, level-one concentrated water pond, second level concentrated water pond, removes the first ultra filtration unit
Silicon sedimentation basin, the second sand filtering device, the second ultra filtration unit, organic film condensing device, sludge concentration tank；
The water outlet of the former pond is connected to the water inlet of the efficient sedimentation tank, the water outlet of the efficient sedimentation tank and institute
State the water inlet connection of the first sand filtering device, the pocket type mistake of the water outlet of first sand filtering device and first ultra filtration unit
The water inlet of filter is connected to, the water inlet company for producing the mouth of a river and the nanofiltration device of the hyperfiltration membrane assembly of first ultra filtration unit
Logical, the water inlet of the core type filter for producing the mouth of a river and first reverse osmosis unit of reverse osmosis units of the nanofiltration device connects
Logical, the concentrated water outlet of the reverse osmosis membrane assembly of first reverse osmosis unit is connected to the water inlet in level-one concentrated water pond, institute
The water outlet for stating level-one concentrated water pond is connected to the water inlet of the core type filter of second reverse osmosis unit of reverse osmosis units, institute
State the second reverse osmosis unit concentrated water outlet be connected to the water inlet in second level concentrated water pond, the water outlet in second level concentrated water pond and
The silicon sedimentation basin water inlet that removes is connected to, described except the water outlet of silicon sedimentation basin and the water inlet of second sand filtering device connect
Logical, the water outlet of second sand filtering device is connected to the water inlet of the bag filter of second ultra filtration unit, and described the
The production mouth of a river of the hyperfiltration membrane assembly of two ultra filtration units is connected to the water inlet of organic film condensing device, the organic film concentration
The production mouth of a river of device is connected to evaporative crystallization unit；
The concentrated water outlet of the hyperfiltration membrane assembly of first ultra filtration unit is connected to the water inlet of the efficient sedimentation tank；
The production mouth of a river of the reverse osmosis membrane assembly of first reverse osmosis unit is connected to the production pond, the second reverse osmosis dress
The production mouth of a river set is connected to the production pond；
The concentrated water outlet of the hyperfiltration membrane assembly of second ultra filtration unit is connected to the water inlet in second level concentrated water pond；
The concentrated water outlet of organic film condensing device is connected to the entrance of biochemical treatment unit；
The efficient sedimentation tank and the mud mouth except silicon sedimentation basin are connected to the entrance of the sludge concentration tank；
The concentrated water outlet of the nanofiltration device is connected to the water inlet of ozone-oxidizing device, the water outlet of the ozone-oxidizing device
It is connected to the evaporative crystallization unit.
2. a kind of high-salt wastewater two-stage concentration and evaporation pretreatment system according to claim 1, which is characterized in that described super
Filtering unit includes bag filter and hyperfiltration membrane assembly, the water inlet of the water outlet of the bag filter and the hyperfiltration membrane assembly
Mouth connection.
3. a kind of high-salt wastewater two-stage concentration and evaporation pretreatment system according to claim 1, which is characterized in that described anti-
Permeation unit includes first reverse osmosis unit and second reverse osmosis unit, first reverse osmosis unit and described
Two reverse osmosis units include core type filter and reverse osmosis membrane assembly, and the core type filter and the reverse osmosis membrane assembly are logical
Cross water pump connection.
4. a kind of high-salt wastewater two-stage concentration and evaporation pretreatment system according to claim 1, which is characterized in that the height
Effect sedimentation basin and described remove in silicon sedimentation basin are installed with doser.
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| CN112429900A (en) * | 2020-11-18 | 2021-03-02 | 内蒙古晶泰环境科技有限责任公司 | Method for optimizing trend of membrane concentration ultrafiltration cross flow concentrated water |
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| CN112429900A (en) * | 2020-11-18 | 2021-03-02 | 内蒙古晶泰环境科技有限责任公司 | Method for optimizing trend of membrane concentration ultrafiltration cross flow concentrated water |
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