CN206901951U - Incineration of refuse flyash wastewater zero discharge and recycling unit - Google Patents
Incineration of refuse flyash wastewater zero discharge and recycling unit Download PDFInfo
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- CN206901951U CN206901951U CN201720377967.0U CN201720377967U CN206901951U CN 206901951 U CN206901951 U CN 206901951U CN 201720377967 U CN201720377967 U CN 201720377967U CN 206901951 U CN206901951 U CN 206901951U
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Abstract
A kind of incineration of refuse flyash wastewater zero discharge and recycling unit, it is characterized in that described device includes pretreatment workshop section, Multistage Membranes sub-prime workshop section, four parts of film concentration section and sub-prime crystallization workshop section, equipment is by incineration of refuse flyash wastewater equalization pond, heavy metal adsorption device, heavy metal desorption apparatus, film softening plant, sludge dehydration device, cation exchange device, multi-stage separation film device, chemically-cleaning device, scale inhibitor feeding device, regenerative agent throwing device, regenerating unit, hyperconcetration device, electrodialysis plant, sub-prime crystallization apparatus, mother liquor solidification equipment and servicing unit are formed by connecting through pipeline.The utility model has the advantages that for caused waste water during incineration treatment of garbage, pass through the combination of multiple water treatment method, realize wastewater zero discharge, the fully salinity such as recovery sodium chloride, potassium sulfate, and efficiently separate the valuable heavy metal such as copper, zinc and supply centralized recovery, system operation cost and operation risk are reduced, obtains economic benefit.
Description
Technical field
A kind of environment protection equipment is the utility model is related to, more particularly to a kind of incineration of refuse flyash wastewater zero discharge and money
Source makeup is put.
Background technology
In garbage incinerating power plant operation, the generation of percolate is to receive the environmentally friendly focus of common concern at present,
Its processing also receives increasing attention.In addition to percolate, flying ash waste water is equally urgently administered, and such waste water generally has
The features such as capacity is big, suspension content is high, salt content is high, hardness is high, content of beary metal is high.Handling process will can only suspend at present
Thing, salinity, heavy metal all solidify, and turn into dangerous waste, and disposal costs are expensive.How " heavy metal ", " salt reclaimed from this strand of waste water
Point " and " water " three class material, realize that zero-emission and recycling are urgency problems to be resolved, and sustainable stable development is important
Link.
Not only salt content is high for flying ash waste water, and salinity composition is complicated, maximum rich in potassium, sodium, chlorine root, sulfate radical etc.
Degree is isolated the valuable salinity tool such as sodium chloride, potassium sulfate and acquired a certain degree of difficulty.In addition, also containing higher in flying ash waste water
The heavy metal of concentration, strict limitation of such material by national wastewater discharge standard, it is necessary to effectively remove.If but with precipitation form
Remove, then as dangerous waste, processing economy can just be highlighted by reclaiming heavy metal to greatest extent.
At present, both at home and abroad for dense salt wastewater minimisation reuse until the method for zero-emission is numerous, such as counter-infiltration, just ooze
Thoroughly, electrodialysis, membrane distillation, evaporative crystallization etc., but be applied to flying ash wastewater zero discharge and recycling have it is certain
Limitation, it can not independently undertake whole process processing.
The content of the invention
Goal of the invention of the present utility model is for defect present in prior art, provides a kind of incineration of refuse flyash and gives up
Water zero discharge and recycling unit.The utility model realizes incineration of refuse flyash waste water by the combination of multiple water treatment method
Zero-emission, the valuable salinities such as sodium chloride, potassium sulfate are fully reclaimed, efficiently separate the valuable heavy metal such as copper, zinc for concentrating back
Receive, reduce system operation cost and operation risk, produce certain economic benefit.
The utility model includes：Pre-process workshop section, Multistage Membranes sub-prime workshop section, film concentration section and sub-prime crystallization workshop section this four
Individual part.The regulation of incineration of refuse flyash waste water is come together in after the incineration of refuse flyash waste water of coagulating kinetics removes oil removal
Pond 101.Pre-process incineration of refuse flyash wastewater equalization pond 101, heavy metal adsorption device 102, heavy metal desorption apparatus in workshop section
103rd, film softening plant 104, intermediate pool 105, heavy metal recovery storage pool 106, sludge dehydration device 107, regulating reservoir lifting
Pump 108, film softening plant intake pump 109, middle water pump 110, heavy metal recovery water pump 111, chemically-cleaning device A 112 are through pipe
Road is formed by connecting.
Multistage Membranes sub-prime workshop section cationic switch 201, cation exchange discharge bay 202, cartridge filter A
203rd, multi-stage separation film device 204, cation exchange intake pump 205, multi-stage separation film intake pump 206, multi-stage separation film high pressure
Pump 207, multi-stage separation film adjusting means 208, chemically-cleaning device B 209, scale inhibitor feeding device A 210, regenerative agent add
Device 211, regenerating unit 212, regeneration water pump 213 are formed by connecting through pipeline.
Cartridge filter B 301, hyperconcetration device 302, hyperconcetration concentrated water pond 303, reuse pool in film concentration section
304th, cartridge filter C 305, electrodialysis plant 306, electrodialysis concentrated water pond 307, hyperconcetration intake pump 308, hyperconcetration high pressure
Pump 309, reuse water pump 310, electrodialysis intake pump 311, chemically-cleaning device C 312, scale inhibitor feeding device B 313 are through pipeline
It is formed by connecting.
1# sub-primes crystallization apparatus 401,2# sub-primes crystallization apparatus 402,1# intake pumps 403,2# water inlets in sub-prime crystallization workshop section
Pump 404,1# mother liquors pump 405,2# mother liquors pump 406,1# condensate pumps 407,2# Recycling Mother Solutions pump 408, condensation pond 409, mother liquor
Pond 410, mother liquor solidification equipment 411, mother liquor solidification equipment intake pump 412, chemically-cleaning device D 413 are formed by connecting through pipeline.
It is characterized in that the pretreatment workshop section is：The delivery port of incineration of refuse flyash wastewater equalization pond 101 passes through pipeline
And regulating reservoir elevator pump 106 is connected with the water inlet of heavy metal adsorption device 102.High inhale is provided with heavy metal adsorption device 102
The heavy metal absorbent of attached capacity, heavy metal absorbent adsorb in waste water and largely separate the valuable heavy metal such as copper, zinc, when weight
After metal absorbent adsorption saturation, desorption and regeneration Posterior circle uses in heavy metal desorption apparatus 103.Heavy metal desorption apparatus
103 delivery port is connected to heavy metal recovery storage pool 108 by pipeline and heavy metal recovery water pump 111 and supplies centralized recovery.With much money
The delivery port of category adsorbent equipment 102 is connected to film softening plant 104 by pipeline and film softening plant intake pump 109.Film softening dress
Put 104 add softening agent go water removal in hardness.The delivery port of film softening plant 104 connects centre by pipeline and middle water pump 110
Pond 105, the mud mouth of film softening plant 104 are connected to sludge dehydration device 107, the cleaning disengaging of film softening plant 104 through pump
Mouth is connected by export and import of the pipeline respectively with chemically-cleaning device A 112.It is clear that chemistry is carried out after filter membrane is contaminated
Wash.The delivery port of intermediate pool 105 is connected by pipeline and cation exchange intake pump 205 with cation exchange device 201.It is multistage
Film sub-prime workshop section is：The water outlet for pre-processing workshop section is connected to cation exchange device 201, calcium, the magnesium etc. further gone in water removal
Bivalent cation.The delivery port of cation exchange device 201 is connected to cation exchange discharge bay 202 by pipeline.Cation is handed over
Changing device 201 is provided with regenerating unit 212 and regenerative agent throwing device 211.After resin adsorption saturation, dress is added by regenerative agent
Put 211 and add regenerative agent, regenerated, regenerated liquid drains into incineration of refuse flyash wastewater equalization pond 101.Cation exchange discharge bay
202 delivery port is connected by pipeline and multi-stage separation film intake pump 206 with cartridge filter A 203 water inlet, separately
One delivery port is connected by pipeline and regeneration water pump 213 with the water inlet of regenerating unit 212.Cartridge filter A's 203 goes out
Mouth is connected by pipeline and multi-stage separation film high-pressure pump 207 with the water inlet of multi-stage separation film device 204.Multi-stage separation film device
204 are connected with multi-stage separation film adjusting means 208, and are adjusted successively by multi-stage separation film adjusting means 208 and intermediate booster pump
It is delivered in seperation films at different levels and carries out dual treatment.Incineration of refuse flyash waste water is after multi-stage separation film sub-prime, most of monovalence
Salinity and fraction divalence salinity enter in monovalence salt solution, and fraction monovalence salinity and most of divalence salinity enter multistage divalence
In salt solution.The water inlet of multi-stage separation film device 204 is connected by pipeline with scale inhibitor feeding device A 210 outlet, when receiving
When filter membrane is run, the dirty stifled situation of film can effectively be alleviated by suitably adding antisludging agent.The cleaning inlet and outlet of multi-stage separation film device 204 are logical
Export and import of the piping respectively with chemically-cleaning device B 209 is connected.After seperation film is contaminated, it can carry out chemical clear
Wash.The production mouth of a river of multi-stage separation film device 204 is connected by pipeline and hyperconcetration intake pump 308 with cartridge filter B 301.Film
Concentration section is：Cartridge filter B 301 outlet is entered by pipeline and hyperconcetration high-pressure pump 309 and hyperconcetration device 302
The mouth of a river connects.Through hyperconcetration device 302, further concentration is reduced monovalence salt solution.The production mouth of a river of hyperconcetration device 302 passes through pipeline
It is connected to reuse pool 304.The concentrated water spout of hyperconcetration device 302 is connected to hyperconcetration concentrated water pond 303, reuse pool 304 by pipeline
Outlet be connected by pipeline and reuse water pump 310 with Multistage Membranes adjusting means 208.The concentrated water spout of multi-stage separation film device 204
It is connected by pipeline and electrodialysis intake pump 311 with cartridge filter C 305, the outlet of cartridge filter 305 is connect by pipeline
To the water inlet of electrodialysis plant 306.Through electrodialysis plant 306, further concentration is reduced divalence salt solution.Electrodialysis plant 306
Fresh water mouth is connected by pipeline and fresh water circulating pump with fresh-water tank, and the outlet of fresh-water tank is connected to incineration of refuse flyash by pipeline and given up
Water regulating reservoir 101.The concentrated water spout of electrodialysis plant 306 is connected by pipeline and concentrated water circulating pump with concentrated water case, and concentrated water case goes out
Mouth is connected to electrodialysis concentrated water pond 307 by pipeline.The Butterworth Hatch of hyperconcetration device 302 and electrodialysis plant 306 respectively with chemistry
The export and import connection of cleaning device 312.After reverse osmosis membrane and contaminated ionic membrane, Chemical cleaning can be carried out.Hyperconcetration
The water inlet of device 302 is connected by outlet of the pipeline also with scale inhibitor feeding device B 313.When reverse osmosis membrane is run, fit
It can effectively alleviate the dirty stifled situation of film when adding antisludging agent.Sub-prime crystallizes workshop section：The outlet in hyperconcetration concentrated water pond 303 passes through pipe
Road and 1# intake pumps 403 are connected to 1# sub-primes crystallization apparatus 401.Through evaporative crystallization and crystallisation by cooling group technology, chlorination is isolated
The valuable monovalence salinity such as sodium, potassium chloride, sodium nitrate.Mother liquor is connected to 2# sub-primes crystallization dress by pipeline and 1# mother liquors pump 405
Put 402.1# condensate pumps 407 are connected by pipeline with condensation pond 409.The outlet in electrodialysis concentrated water pond 307 by pipeline and
2# intake pumps 404 are connected to 2# sub-primes crystallization apparatus 402, and potassium chloride is incorporated in electrodialysis concentrated water, and appropriate extra supplement chlorination
Potassium, reacted crystallization processes isolate potassium sulfate, and most of mother liquor returns to 1# sub-primes by pipeline and 2# Recycling Mother Solutions pump 408
Crystallization apparatus 401, a small amount of mother liquor are discharged into mother liquor pond 410 by pipeline and 2# mother liquors pump 406.The one outlet in mother liquor pond 410 is led to
Piping and Recycling Mother Solution pump 414 are connected to dense salt wastewater equalization pond 101.Another outlet in mother liquor pond 410 passes through pipeline and mother
Liquid solidification intake pump 412 is connected with mother liquor solidification equipment 411, makees security landfill processing after solidification.1# sub-primes crystallization apparatus 401,
The Butterworth Hatch of 2# sub-primes crystallization apparatus 402 and mother liquor solidification equipment 411 export and import with chemically-cleaning device D413 respectively
Connection.When 1#, 2# sub-prime crystallization apparatus and mother liquor solidification equipment reduce because evaporation capacity reduction or heat transfer efficiency occurs in equipment scaling
When, Chemical cleaning can be carried out.
The heavy metal adsorption device 102 is heavy metals trapping complete set of equipments, using heavy metal chelating agent, chelating resin etc.
Sorbing material.The heavy metal desorption apparatus 103 is that heavy metal chelating agent is desorbed complete set of equipments, can be used and heavy metals trapping
Desorption material corresponding to the sorbing materials such as agent, chelating resin.
The film softening plant 104 is softening precipitation microfiltration membranes complete set of equipments, and the reaction tank containing softening, softening agent add and be
System, tube type filter membrance device, sludge concentration tank, 0.1 micron of micro-filtrate membrane filtration precision ＜.Before the delivery port of film softening plant 104
Provided with pH value governor motion.
The front and rear on-position of the heavy metal adsorption device 102 and film softening plant 104 can be according to the water quality feelings of raw water
Condition is set.
The sludge dehydration device 107 is plate compression complete set of equipments, pond containing sewage sludge storage, sludge feed pump, sheet frame pressure
Filter, storage bucket, compressed air reservoir, design dewatered sludge moisture content≤65%.
The cationic ion-exchange resin of the cation exchange device 201 is the macropore weak acid suitable for bivalent cation absorption
Type cationic ion-exchange resin, it is twin columns, it is in parallel, or series operation.
The seperation film of the multi-stage separation film device 204 is that one divalence of high accuracy separates nanofiltration membrane component, and device is multistage
Series connection, design production Water Sproading rate：The single-stage rate of recovery >=60%；Recycled in its entirety rate >=85%；It is single-stage to design the monovalent salt rate of recovery
The rate of recovery >=50%, recycled in its entirety rate >=75%；The design divalent salts rate of recovery is the single-stage rate of recovery >=95%, recycled in its entirety rate >=
95%.
The concentration film of the hyperconcetration device 302 is plural serial stage for the light membrane module in sea and hyperconcetration membrane module, the device,
Design production Water Sproading rate >=75%, salt rejection rate >=96%.
The outlet of the reuse pool 304 is connected by pipeline and reuse water pump 310 with Multistage Membranes adjusting means 208, is used
Make the regulation water of multi-stage separation film device 204.
The ionic membrane of the electrodialysis plant 306 is one group of high selectivity cation-exchange membrane and anion-exchange membrane, if
Meter production Water Sproading rate >=85%, design concentrated water salt content 15-18%.
The 1# sub-primes crystallization apparatus 401 and 2# sub-primes crystallization apparatus 402 are that sub-prime crystallizes complete set of equipments, and the equipment is made a living
Steam drive Multi-effect evaporation crystallizer (MEE) or steam mechanical recompression crystallizing evaporator (MVR) or steam power recompression are steamed
Send out crystallizer (TVR) or with guide shell crystallizer (DTB), deisgn product salt yield >=85%.
The mother liquor solidification equipment 411 is single effect evaporation crystallizer, such as raw steam drive single effect evaporation crystallizer, band folder
Cover enamel autoclave crystallizing evaporator etc..
The mother liquor solidification equipment 411 is arranged to omit when centrally disposing outside mother liquor not to be had to.
The utility model has the advantages that zero-emission and resource utilization device are directed to produced by during incineration treatment of garbage
Flying dust waste water, by pretreatment, multistage UF membrane, film concentration and sub-prime crystallization treatment after, fully reclaim sodium chloride, potassium sulfate
Etc. valuable salinity, and efficiently separate the valuable heavy metal such as copper, zinc and supply centralized recovery.Pass through the group of multiple water treatment technique
Close, effectively improve the treatment effect of incineration of refuse flyash waste water, reach zero-emission, reduce system operation cost and operation wind
Danger, produces certain economic benefit.
Brief description of the drawings
Fig. 1 block diagrams of the present utility model；
Fig. 2 structural representations of the present utility model.
In figure：101 incineration of refuse flyash wastewater equalization ponds, 102 heavy metal adsorption devices, 103 heavy metal desorption apparatus,
104 film softening plants, 105 intermediate pools, 106 heavy metal recovery storage pools, 107 sludge dehydration devices, the lifting of 108 regulating reservoirs
Pump, 109 film softening plant intake pumps, 110 middle water pumps, 111 heavy metal recovery water pumps, 112 chemically-cleaning device A, 201 sun from
Sub- switch, 202 cation exchange discharge bays, 203 cartridge filter A, 204 multi-stage separation film devices, 205 cation exchanges
Intake pump, 206 multi-stage separation film intake pumps, 207 multi-stage separation film high-pressure pumps, 208 multi-stage separation film adjusting meanss, 209 chemistry
Cleaning device B, 210 scale inhibitor feeding device A, 211 regenerative agent throwing devices, 212 regenerating units, 213 regeneration water pumps, 301 are protected
Pacify filter B, 302 hyperconcetration devices, 303 hyperconcetration concentrated water ponds, 304 reuse pools, 305 cartridge filter C, 306 electrodialysis
Device, 307 electrodialysis concentrated water ponds, 308 hyperconcetration intake pumps, 309 hyperconcetration high-pressure pumps, 310 reuse water pumps, 311 electrodialysis are entered
Water pump, 312 chemically-cleaning device C, 313 scale inhibitor feeding device B, 401 1# sub-primes crystallization apparatus, 402 2# sub-primes crystallization dress
Put, 403 1# intake pumps, 404 2# intake pumps, 405 1# mother liquors pumps, 406 2# mother liquors pumps, 407 1# condensate pumps, 408 2#
Recycling Mother Solution pump, 409 condensation ponds, 410 mother liquor ponds, 411 mother liquor solidification equipments, 412 mother liquor solidification equipment intake pumps, 413 are changed
Learn cleaning device D, 414 Recycling Mother Solution pumps, 415 2# condensate pumps.
Embodiment
Embodiment one
Embodiment of the present utility model is further illustrated below in conjunction with the accompanying drawings：
Referring to Fig. 1, Fig. 2, the present embodiment is by pre-processing workshop section, Multistage Membranes sub-prime workshop section, film concentration section, sub-prime crystallization work
Four parts of section form.
In pretreatment workshop section, incineration of refuse flyash waste water coagulating kinetics, rubbish is come together in after removing oil removal
Flying ash wastewater equalization pond 101.The delivery port of incineration of refuse flyash wastewater equalization pond 101 passes through pipeline and regulating reservoir elevator pump
108 are connected with the water inlet of heavy metal adsorption device 102.Heavy metal adsorption device 102 is heavy metals trapping complete set of equipments, a huge sum of money
Belong to the heavy metal absorbent that high-adsorption-capacity is provided with adsorbent equipment 102, using adsorption materials such as heavy metal chelating agent, chelating resins
Material, the greatly valuable heavy metal such as adsorbing separation copper, zinc.After heavy metal absorbent adsorption saturation, it is desorbed and fills in heavy metal
Desorption and regeneration Posterior circle uses in putting 103.Heavy metal desorption apparatus 103 be heavy metal chelating agent be desorbed complete set of equipments, using with
Desorption material corresponding to the sorbing materials such as heavy metal chelating agent, chelating resin.The delivery port of heavy metal desorption apparatus 103 passes through pipeline
Heavy metal recovery storage pool 106 is connected to heavy metal recovery water pump 111, for centralized recovery.The delivery port of heavy metal adsorption device 102
Film softening plant 104 is connected to by pipeline and film softening plant intake pump 109.Film softening plant 104 is softening precipitation microfiltration membranes
Complete set of equipments, the reaction tank containing softening, softening agent dosing system, tube type filter membrance device, sludge concentration tank, micro-filtrate membrane filtration precision
0.1 micron of ＜.PH value governor motion is provided with before the delivery port of film softening plant 104.Film softening plant 104 adds softening agent removal
Hardness in water.The water outlet of film softening plant 104 connects intermediate pool 105, film softening plant 104 by pipeline and middle water pump 110
Sludge handled by mud mouth through pumping to sludge dehydration device 107.Sludge dehydration device 107 is plate compression into being arranged
It is standby, pond containing sewage sludge storage, sludge feed pump, plate and frame filter press, storage bucket, compressed air reservoir, design dewatered sludge moisture content
≤ 65%.The cleaning inlet and outlet of film softening plant 104 pass through the pipeline export and import with chemically-cleaning device A 112 respectively
Connection, after filter membrane is contaminated, can carry out Chemical cleaning.Heavy metal adsorption device 102 connects with the front and rear of film softening plant 104
Entering position can be set according to the water quality situation of raw water.The present embodiment according to Fig. 2 connection.
Will be pre- by pipeline and cation exchange intake pump 205 by the delivery port of intermediate pool 105 in Multistage Membranes sub-prime workshop section
Processing workshop section water outlet is connected to cation exchange device 201, the bivalent cation such as the calcium that further goes in water removal, magnesium.Cation is handed over
The cationic ion-exchange resin of changing device 201 is the macropore weak-type cationic ion-exchange resin suitable for bivalent cation absorption, is
Twin columns, it is in parallel, or series operation.The present embodiment is parallel-connection structure.The delivery port of cation exchange device 201 is connected to by pipeline
Cation exchange discharge bay 202.Cation exchange device 201 is provided with regenerating unit 212, after resin adsorption saturation, by again
Raw agent throwing device 211 adds regenerative agent, is regenerated, regenerated liquid drains into incineration of refuse flyash wastewater equalization pond 101.Cation
A delivery port for exchanging discharge bay 202 passes through pipeline and multi-stage separation film intake pump 206 and cartridge filter A 203 water inlet
Mouth connection, another delivery port are connected by pipeline and regeneration water pump 213 with the water inlet of regenerating unit 212.Cartridge filter A
203 outlet is connected by pipeline and multi-stage separation film high-pressure pump 207 with the water inlet of multi-stage separation film device 204.Multi-stage separation
The seperation film of film device 204 is that one divalence of high accuracy separates nanofiltration membrane component, and device is plural serial stage, design production Water Sproading rate：
The single-stage rate of recovery >=60%；Recycled in its entirety rate >=85%；The design monovalent salt rate of recovery is the single-stage rate of recovery >=50%, recycled in its entirety
Rate >=75%；The design divalent salts rate of recovery is the single-stage rate of recovery >=95%, recycled in its entirety rate >=95%.Multi-stage separation film device
204 are connected with multi-stage separation film adjusting means 208, and are adjusted successively by multi-stage separation film adjusting means 208 and intermediate booster pump
It is delivered in seperation films at different levels and carries out dual treatment.Incineration of refuse flyash waste water is after multi-stage separation film sub-prime, most of monovalence
Salinity and fraction divalence salinity enter in monovalence salt solution, and fraction monovalence salinity and most of divalence salinity enter divalence salt solution
In.The water inlet of multi-stage separation film device 204 is connected by pipeline with scale inhibitor feeding device A 210 outlet, works as NF membrane
During operation, the dirty stifled situation of film can effectively be alleviated by suitably adding antisludging agent.The cleaning inlet and outlet of multi-stage separation film device 204 pass through
Export and import of the pipeline respectively with chemically-cleaning device B 209 is connected, and after seperation film is contaminated, can carry out Chemical cleaning.
In film concentration section, the production mouth of a river of multi-stage separation film device 204 passes through pipeline and hyperconcetration intake pump 308 and security personnel
Filter B 301 connects.Cartridge filter B 301 outlet passes through pipeline and hyperconcetration high-pressure pump 309 and hyperconcetration device 302
Water inlet connection, monovalence salt solution through hyperconcetration device 302 further concentration decrement.The concentration film of hyperconcetration device 302 is sea
Light membrane module and hyperconcetration membrane module, the device are plural serial stage, design production Water Sproading rate >=75%, salt rejection rate >=96%.It is super
The production mouth of a river of enrichment facility 302 is connected to reuse pool 304 by pipeline.The concentrated water spout of hyperconcetration device 302 is connected to by pipeline
Hyperconcetration concentrated water pond 303.The outlet of reuse pool 304 is connected by pipeline and reuse water pump 310 with Multistage Membranes adjusting means 208
Connect.Regulation water as multi-stage separation film device 204.The concentrated water spout of multi-stage separation film device 204 is entered by pipeline and electrodialysis
Water pump 311 is connected with cartridge filter C 305.The outlet of cartridge filter 305 is connected to entering for electrodialysis plant 306 by pipeline
The mouth of a river, through electrodialysis plant 306, further concentration is reduced divalence salt solution.The ionic membrane of electrodialysis plant 306 is one group of high selection
Property cation-exchange membrane and anion-exchange membrane, design production Water Sproading rate >=85%, design concentrated water salt content 15-18%.Electric osmose
The fresh water mouth of analysis apparatus 306 is connected by pipeline and fresh water circulating pump with fresh-water tank, and the outlet of fresh-water tank by pipeline and is connected to
Incineration of refuse flyash wastewater equalization pond 101.The concentrated water spout of electrodialysis plant 306 is connected by pipeline and concentrated water circulating pump with concentrated water case
Connect, the outlet of concentrated water case is connected to electrodialysis concentrated water pond 307 by pipeline.The cleaning of hyperconcetration device 302 and electrodialysis plant 306
Export and import of the mouth respectively with chemically-cleaning device 312 is connected, and after reverse osmosis membrane and contaminated ionic membrane, can carry out chemistry
Cleaning.The water inlet of hyperconcetration device 302 is connected by pipeline with scale inhibitor feeding device B 313 outlet, works as reverse osmosis membrane
During operation, the dirty stifled situation of film can effectively be alleviated by suitably adding antisludging agent.
Workshop section is crystallized in sub-prime, the outlet in hyperconcetration concentrated water pond 303 is connected to 1# sub-prime knots by pipeline and 1# intake pumps 403
Brilliant device 401.1# sub-primes crystallization apparatus 401 and 2# sub-primes crystallization apparatus 402 are that sub-prime crystallizes complete set of equipments, and the equipment is made a living steaming
Vapour driving Multi-effect evaporation crystallizer (MEE) or steam mechanical recompression crystallizing evaporator (MVR) or steam power recompression evaporation
Crystallizer (TVR) or with guide shell crystallizer (DTB), deisgn product salt yield >=85%.The present embodiment steam drive of making a living is more
Imitate crystallizing evaporator.Through evaporative crystallization and crystallisation by cooling group technology, the valuable monovalence such as sodium chloride, potassium chloride is isolated
Salinity.Evaporation condensate is discharged into condensation pond 409 by pipeline and 1# condensate pumps 407, and a small amount of mother liquor is female by pipeline and 1#
Liquid pump 405 is connected to 2# sub-primes crystallization apparatus 402.1# condensate pumps 407 are connected by pipeline with condensation pond 409.Electrodialysis is dense
The outlet in pond 307 is connected to 2# sub-primes crystallization apparatus 402 by pipeline and 2# intake pumps 404, and it is dense that potassium chloride is incorporated into electrodialysis
In water, and appropriate extra supplement potassium chloride, reacted crystallization processes isolate potassium sulfate, and most of mother liquor passes through pipeline and 2#
Recycling Mother Solution pump 408 returns to 1# sub-primes crystallization apparatus 401, and a small amount of mother liquor is discharged into mother liquor pond by pipeline and 2# mother liquors pump 406
410.The one outlet in mother liquor pond 410 is connected to dense salt wastewater equalization pond 101 by pipeline and Recycling Mother Solution pump 414.Mother liquor pond 410
Another outlet be connected by pipeline and mother liquor solidification equipment intake pump 412 with mother liquor solidification equipment 411, make safely after solidification
Landfill disposal.Mother liquor solidification equipment 411 is single effect evaporation crystallizer, and mother liquor solidification equipment 411 is arranged outside mother liquor and centrally disposed
In the case of can omit and not have to.The present embodiment is made a living steam drive single effect evaporation crystallizer.1# sub-primes crystallization apparatus 401,2# point
The Butterworth Hatch of matter crystallization apparatus 402 and mother liquor solidification equipment 411 connects with chemically-cleaning device D 413 export and import respectively
Connect, when 1# sub-primes crystallization apparatus 401,2# sub-primes crystallization apparatus 402 and mother liquor solidification equipment 411 because evaporation capacity occurs in equipment scaling
When reduction or heat transfer efficiency reduce, Chemical cleaning can be carried out.
The handling process of the present embodiment comprises the following steps：
(1) incineration of refuse flyash waste water has been subjected to coagulating kinetics, and incineration of refuse flyash is come together in after removing oil removal
Wastewater equalization pond 101, adjust homogeneous；
(2) waste water after regulation homogeneous is delivered to the heavy metal adsorption device 102 of pretreatment workshop section, for trapping raw water
Middle heavy metal, the greatly valuable heavy metal such as adsorbing separation copper, zinc.Content of beary metal can generally be down to below 2mg/L, when weight
After metal absorbent adsorption saturation, desorption and regeneration Posterior circle uses in heavy metal desorption apparatus 103.Heavy metal desorption apparatus
103 water outlets are stored in heavy metal recovery storage pool, for centralized recovery；
(3) waste water after removing heavy metal is delivered to film softening plant 104, carries out dosing reaction and micro-filtrate membrane filtration.
Hardness can be dropped within 100mg/L, and solvable silicon can be dropped within 20mg/L.Softening water outlet is delivered to intermediate pool 105, soft
Change sludge and be delivered to sludge dehydration device 107, after filter-press dehydration, the filter cake that press filtration is formed is disposed as common solid waste, is filtered
Liquid returns to be mixed with former dense salt waste water, reenters the processing of this complexes；
(4) pretreated waste water is delivered to the cation exchange device 201 of Multistage Membranes sub-prime workshop section, further removed
The bivalent cations such as calcium, magnesium in water, hardness can be dropped within 5mg/L, and water outlet is delivered to cation exchange discharge bay 202；
(5) water outlet after cation exchange is delivered to multi-stage separation film device 204, it is isolated to contain most of monovalent salt
Divide the monovalence salt solution and the divalence salt solution of the salinity of monovalence containing fraction and most of divalence salinity with fraction divalence salinity；
(6) monovalence salt solution is delivered to the further decrement concentration of hyperconcetration device 302 of film concentration section, reaches salt content
To 8-10%.Divalence salt solution is delivered to the further decrement concentration of electrodialysis plant 306 of film concentration section, reaches salt content
15-18%.Fresh water is returned and mixed with raw water, reenters the processing of this complexes；
(7) the production water of hyperconcetration device 302 is stored in reuse pool 304, a part is used as production water or recirculated water
Supplement of standing water, another part are delivered to the multi-stage separation film adjusting means 208 of Multistage Membranes sub-prime workshop section, filled as multi-stage separation film
Put 204 regulation water；
(8) hyperconcetration concentrated water is delivered to the 1# sub-primes crystallization apparatus 401 of sub-prime crystallization workshop section, isolates sodium chloride, chlorine
Change the valuable salinities such as potassium, evaporation condensate is discharged into condensation pond 409, and a small amount of mother liquor, which is discharged into mother liquor pond 410, makes product salt yield
Reach 95-98%, evaporative condenser liquid yield reaches 95-98%；
(9) electrodialysis concentrated water is delivered to the 2# sub-primes crystallization apparatus 402 of sub-prime crystallization workshop section, supplying 1# sub-prime crystallization dresses
The potassium chloride of 401 outputs is put, and appropriate extra supplement potassium chloride, reactive crystallization go out potassium sulfate, most of Recycling Mother Solution pump returns
1# sub-primes crystallization apparatus 401, a small amount of mother liquor, which is discharged into mother liquor pond 410, makes product salt yield reach 95-98%, and discharge mother liquor amount≤
5%；
(10) mother liquor is delivered to the mother liquor solidification equipment 411 of sub-prime crystallization workshop section, makees security landfill processing after solidification.When
When row centrally disposes outside mother liquor, mother liquor is delivered to outer row's point.
The processing step (3), (4), (5), (6), (7), (8), (9), the flushing in (10), Chemical cleaning, regeneration are used
Water uses the self-produced water of device, and Chemical cleaning regeneration discharge water is recycled to pretreatment workshop section caused by periodicity.
In above-mentioned pretreatment workshop section, the residence time of incineration of refuse flyash wastewater equalization pond 101, heavy metal absorbent kind
Class, dosage, heavy metal absorbent desorption method, dosing and frequency of use, soften adding for medicament in film softening plant 103
Amount and pH, concentration of suspension, micro-filtration membrane flux, turbidity, SDI and the hardness of membrane area and water outlet will have with different raw water qualities
Different values.The species and dosage of the chemical cleaning medicament of microfiltration membranes, cleaning frequency etc. also change with the change of raw water.
In Multistage Membranes sub-prime workshop section, the ion exchange capacity of cation exchange device 201, regenerative agent species, dosage and
Regeneration frequency, membrane flux, membrane area and the operating pressure of multistage membrane separation device 204 will have different with different raw water qualities
Value.The antisludging agent of NF membrane, the species of chemical cleaning medicament and dosage, cleaning frequency etc. also change with the change of raw water.
In film concentration section, membrane flux, membrane area and the operating pressure of hyperconcetration device 302, electrodialysis plant 306
Membrane area, current density, fresh water salt content will have different values with different raw water qualities.The antisludging agent of above-mentioned various films, change
Species and dosage, cleaning frequency of cleaning agent etc. is learned also with the change of raw water to change.
In sub-prime crystallizes workshop section, evaporation capacity, the heat-transfer surface of 1# sub-primes crystallization apparatus 401 and 2# sub-primes crystallization apparatus 402
Product, mother liquor amount will have different values with different raw water qualities.The evaporation capacity of mother liquor solidification equipment 411, heat exchange area be not with yet
Same raw water quality will have different values.Arrange outside the mother liquor and centrally dispose or when mother liquor all circulates, mother liquid flow rate is also with difference
Raw water quality will have different values.
By taking the pending flying dust waste water of typical garbage combustion device as an example, amount of inlet water 50m3/ h, salt content 5.0% are total hard
1500mg/L, total metalses 2500mg/L are spent, after this zero-emission and resource utilization process processing, finally gives product
Salt sodium chloride yield ＞ 75%, potassium sulfate yield ＞ 95%, recycle-water yield ＞ 90%, 50 yuan of system overall operation cost ＜/
m3。
Embodiment two
The present embodiment is identical with embodiment one, except that hyperconcetration device 302 is by the light reverse osmosis unit in sea and electric osmose
Analysis apparatus forms.The production mouth of a river of multi-stage separation film device 204 passes through pipeline and hyperconcetration intake pump 308 and cartridge filter B
301 connections.Cartridge filter B 301 outlet is entered by pipeline and hyperconcetration film high-pressure pump 309 and the light reverse osmosis unit in sea
The mouth of a river connects, and monovalence salt solution is concentrated into TDS as 60000mg/L or so, and production water is connected to reuse pool 304 by pipeline.Sea is light anti-
Concentrated water is permeated to connect by pipeline and the water inlet of electrodialysis plant intake pump and electrodialysis plant, be further concentrated into TDS >=
150000mg/L, the outlet of concentrated water case are connected to hyperconcetration concentrated water pond 303 by pipeline.Fresh water desalination to TDS≤30000mg/L,
The outlet of fresh-water tank is connected to the water inlet of the light reverse osmosis unit in sea by pipeline.
Claims (10)
1. a kind of incineration of refuse flyash wastewater zero discharge and recycling unit, the technique of its processing unit include pretreatment workshop section,
Multistage Membranes sub-prime workshop section, film concentration section and this four parts of sub-prime crystallization workshop section, the waste incineration through coagulating kinetics fly
Grey waste water comes together in incineration of refuse flyash wastewater equalization pond (101) after removing oil removal, it is characterised in that the waste incineration flies
The delivery port of grey wastewater equalization pond (101) is entered by pipeline and regulating reservoir elevator pump (108) and heavy metal adsorption device (102)
The mouth of a river is connected, and the heavy metal absorbent of high-adsorption-capacity, heavy metal desorption apparatus are provided with heavy metal adsorption device (102)
(103) delivery port is connected to heavy metal recovery storage pool (106) by pipeline and heavy metal recovery water pump (111), and heavy metal is inhaled
The delivery port of adsorption device (102) is connected to film softening plant (104), film softening by pipeline and film softening plant intake pump (109)
Device (104) delivery port connects intermediate pool (105), film softening plant (104) mud mouth by pipeline and middle water pump (110)
Be connected to sludge dehydration device (107) through pump, the cleaning inlet and outlet of film softening plant (104) by pipeline respectively with Chemical cleaning
Device A (112) export and import connection, intermediate pool (105) delivery port pass through pipeline and cation exchange intake pump (205)
It is connected with cation exchange device (201)；
Multistage Membranes sub-prime workshop section is：Cation exchange intake pump (205) is connected with cation exchange device (201), and cation is handed over
The delivery port of changing device (201) is connected to cation exchange discharge bay (202) by pipeline, and cation exchange device (201) is provided with
Regenerating unit (212) and regenerative agent throwing device (211), a delivery port of cation exchange discharge bay (202) pass through pipeline
Be connected with multi-stage separation film intake pump (206) with cartridge filter A (203) water inlet, another delivery port by pipeline and
Regeneration water pump (213) is connected with the water inlet of regenerating unit (212), and cartridge filter A (203) outlet passes through pipeline and multistage
Seperation film high-pressure pump (207) is connected with multi-stage separation film device (204) water inlet, multi-stage separation film device (204) and more fractions
Connect from film adjusting means (208), and be delivered to respectively by multi-stage separation film adjusting means (208) regulation and intermediate booster pump successively
Dual treatment is carried out in level seperation film, the water inlet of multi-stage separation film device (204) passes through pipeline and scale inhibitor feeding device A
(210) outlet connection, multi-stage separation film device (204) cleaning inlet and outlet by pipeline respectively with chemically-cleaning device B
(209) export and import connection, the production mouth of a river of multi-stage separation film device (204) passes through pipeline and hyperconcetration intake pump (308)
It is connected with cartridge filter B (301)；
Film concentration section is：Cartridge filter B (301) outlet is filled by pipeline and hyperconcetration high-pressure pump (309) with hyperconcetration
The water inlet connection of (302) is put, the production mouth of a river of hyperconcetration device (302) is connected to reuse pool (304) by pipeline, and concentrated water spout leads to
Piping is connected to hyperconcetration concentrated water pond (303), and the outlet of reuse pool (304) passes through pipeline and reuse water pump (310) and multistage
Film adjusting means (208) connects, the concentrated water spout of multi-stage separation film device (204) by pipeline and electrodialysis intake pump (311) with
Cartridge filter C (305) connections, cartridge filter C (305) outlet are connected to the water inlet of electrodialysis plant (306) by pipeline
Mouthful, the fresh water mouth of electrodialysis plant (306) is connected by pipeline and fresh water circulating pump with fresh-water tank, and the outlet of fresh-water tank passes through pipe
Road passes through pipeline and concentrated water circulation with incineration of refuse flyash wastewater equalization pond (101), the concentrated water spout of electrodialysis plant (306) is connected to
Pump is connected with concentrated water case, and the outlet of concentrated water case is connected to electrodialysis concentrated water pond (307), hyperconcetration device (302) and electricity by pipeline
Export and import of the Butterworth Hatch of electrodialysis apparatus (306) respectively with chemically-cleaning device C (312) is connected, hyperconcetration device (302)
Antisludging agent adding mouth be connected with scale inhibitor feeding device B (313) outlet；
Sub-prime crystallizes workshop section：The outlet in hyperconcetration concentrated water pond (303) crystallizes the 1# intake pumps of workshop section by pipeline and sub-prime
(403) 1# sub-primes crystallization apparatus (401) is connected to, the mother liquor outlet of 1# sub-primes crystallization apparatus (401) passes through pipeline and 1# mother liquor pumps
(405) 2# sub-primes crystallization apparatus (402) is connected to, 1# condensate pumps (407) are connected by pipeline with condensation pond (409), electric osmose
The outlet of analysis concentrated water pond (307) is connected to 2# sub-primes crystallization apparatus (402), most of mother liquor by pipeline and 2# intake pumps (404)
1# sub-primes crystallization apparatus (401) is returned to by pipeline and 2# Recycling Mother Solutions pump (408), a small amount of mother liquor passes through pipeline and 2# mother liquor pumps
(406) mother liquor pond (410) is discharged into, the one outlet of mother liquor pond (410) is connected to dense salt by pipeline and Recycling Mother Solution pump (414) and given up
Water regulating reservoir (101), another outlet of mother liquor pond (410) solidify intake pump (412) by pipeline and mother liquor and solidified with mother liquor
Device (411) connects, 1# sub-primes crystallization apparatus (401), 2# sub-primes crystallization apparatus (402) and mother liquor solidification equipment (411) it is clear
Export and import of the mouth respectively with chemically-cleaning device D (413) is washed to be connected.
2. incineration of refuse flyash wastewater zero discharge according to claim 1 and recycling unit, it is characterised in that described heavy
Metal adsorption device (102) is heavy metals trapping complete set of equipments, heavy metal adsorption device (102) and film softening plant (104)
Front and rear on-position can be set according to the water quality situation of raw water, and the heavy metal desorption apparatus (103) takes off for heavy metal chelating agent
Attached complete set of equipments.
3. incineration of refuse flyash wastewater zero discharge according to claim 1 and recycling unit, it is characterised in that the film
Softening plant (104) precipitates microfiltration membranes complete set of equipments, 0.1 micron of micro-filtrate membrane filtration precision ＜, film softening plant (104) for softening
Delivery port before be provided with pH value governor motion.
4. incineration of refuse flyash wastewater zero discharge according to claim 1 and recycling unit, it is characterised in that the dirt
Mud dehydration device (107) is plate compression complete set of equipments, dewatered sludge moisture content≤65%.
5. incineration of refuse flyash wastewater zero discharge according to claim 1 and recycling unit, it is characterised in that the sun
The cationic ion-exchange resin of ion interchange unit (201) is the macropore weak-type cation exchange suitable for bivalent cation absorption
Resin, the device are twin columns, are run in parallel or series.
6. incineration of refuse flyash wastewater zero discharge according to claim 1 and recycling unit, it is characterised in that described more
The seperation film of level separation membrane device (204) is that one divalence of high accuracy separates nanofiltration membrane component, and device is plural serial stage, produces Water Sproading
Rate is the single-stage rate of recovery >=60%, recycled in its entirety rate >=85%, and the monovalent salt rate of recovery is the single-stage rate of recovery >=50%, recycled in its entirety
Rate >=75%, the divalent salts rate of recovery are the single-stage rate of recovery >=95%, recycled in its entirety rate >=95%.
7. incineration of refuse flyash wastewater zero discharge according to claim 1 and recycling unit, it is characterised in that described super
The concentration film of enrichment facility (302) is plural serial stage for the light membrane module in sea and hyperconcetration membrane module, the device, production Water Sproading rate >=
75%, salt rejection rate >=96%.
8. incineration of refuse flyash wastewater zero discharge according to claim 1 and recycling unit, it is characterised in that described time
The outlet of millpond (304) is connected by pipeline and reuse water pump (310) with Multistage Membranes adjusting means (208), as more fractions
From the regulation water of film device (204).
9. incineration of refuse flyash wastewater zero discharge according to claim 1 and recycling unit, it is characterised in that the electricity
The ionic membrane of electrodialysis apparatus (306) is one group of high selectivity cation-exchange membrane and anion-exchange membrane, production Water Sproading rate >=
85%, concentrated water salt content is 15-18%.
10. incineration of refuse flyash wastewater zero discharge according to claim 1 and recycling unit, it is characterised in that the 1#
Sub-prime crystallization apparatus (401) and 2# sub-primes crystallization apparatus (402) are that sub-prime crystallizes complete set of equipments, and the equipment is steam drive multiple-effect
Crystallizing evaporator (MEE) or steam mechanical recompression crystallizing evaporator (MVR) or steam power recompression crystallizing evaporator (TVR)
Or set with guide shell crystallizer (DTB), product salt yield >=85%, the mother liquor solidification equipment (411) for single effect evaporation crystallization
It is standby.
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| CN201720377967.0U CN206901951U (en) | 2017-04-12 | 2017-04-12 | Incineration of refuse flyash wastewater zero discharge and recycling unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108569806A (en) * | 2018-04-25 | 2018-09-25 | 厦门市科宁沃特水处理科技股份有限公司 | A kind of flying dust leaching liquor homogeneous ion-exchange membrane electrodialysis advanced treatment process |
| CN114230070A (en) * | 2021-11-21 | 2022-03-25 | 江苏卓博环保科技有限公司 | Incineration fly ash washing water recycling treatment device and method |
-
2017
- 2017-04-12 CN CN201720377967.0U patent/CN206901951U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108569806A (en) * | 2018-04-25 | 2018-09-25 | 厦门市科宁沃特水处理科技股份有限公司 | A kind of flying dust leaching liquor homogeneous ion-exchange membrane electrodialysis advanced treatment process |
| CN114230070A (en) * | 2021-11-21 | 2022-03-25 | 江苏卓博环保科技有限公司 | Incineration fly ash washing water recycling treatment device and method |
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