CN207619221U - A kind of coking wastewater deep treatment device - Google Patents
A kind of coking wastewater deep treatment device Download PDFInfo
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- CN207619221U CN207619221U CN201721632798.7U CN201721632798U CN207619221U CN 207619221 U CN207619221 U CN 207619221U CN 201721632798 U CN201721632798 U CN 201721632798U CN 207619221 U CN207619221 U CN 207619221U
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Abstract
The utility model discloses a kind of coking wastewater deep treatment devices, are related to Technologies of Coke Plant Wastewater Treatment field.A kind of coking wastewater deep treatment device, including sequentially connected biochemical unit, sedimentation basin, medium-speed filter, more medium filter, resin adsorption tower, ultrafiltration unit, ultrafiltration pond, nanofiltration unit, nanofiltration pond, reverse osmosis unit；The resin adsorption tower is also connected with light electrolysis Fenton system, and light electrolysis Fenton system connect to form cycle with biochemical unit；The nanofiltration unit is also connected with nanofiltration concentrated water pond, nanofiltration concentrated water unit in turn, and the nanofiltration concentrated water unit is connect with reverse osmosis unit；Shown in ultrafiltration unit connection ultrafiltration concentrated water pond.The utility model avoids coking wastewater and arranges a series of environmental issues brought outside, social benefit, environmental benefit are very notable, simultaneously to coking industry existence and sustainable development, improve the ecological environment, save water resource and have far-reaching significance, be suitble to be promoted on a large scale in coking industry.
Description
Technical field
The utility model is related to Technologies of Coke Plant Wastewater Treatment field, and in particular to a kind of coking wastewater deep treatment device.
Background technology
Shanxi is the big province of coke production, and 80,340,000 tons of coke output in 2015 accounts for about the 20% of national total output.Coke is given birth to
The production especially dry distillation of coal and coal gas cooling and purification process, will produce a large amount of coking wastewater, and average coke per ton generates about
0.5-1.0m3Coking wastewater.These waste water contain phenol, cyanide, rhodanide and the ammonia nitrogen of high concentration, while also containing in distress
With poly-ring aromatic compounds such as the heterocyclic compounds such as biodegradable oils, pyridine and biphenyl, toxicity is big, and intractability is big, and one
It is directly the difficult point of field of industrial waste water treatment.
After Treatment of Coking Effluent generally goes through the pretreatments such as simple oil removing at present, using biologic treating technique such as A/O or A2/
O realizes decarburization and denitrogenation simultaneously.It is big and ingredient difficult to degrade is high, the anti-impact of traditional biological denitrification process based on coking wastewater toxicity
Poor ability is hit, the reinforcing of hardly degraded organic substance is removed not enough, causes COD and coloration can not be up to standard, cannot be satisfied new state
Family discharge standard GB16171-2012.For this purpose, how to improve coking wastewater deep treatment reuse ability, become entire Coke Industry
The required pressing problem faced.
Existing advanced treatment method for carbonization wastewater mainly has coagulating sedimentation, activated carbon adsorption, advanced oxidation, UF membrane etc..
Due to coagulating sedimentation advantage of lower cost, the extensive use in coking wastewater deep treatment, still, due to residual organic substances polarity
Relatively strong, more containing chromophoric group, conventional coagulating sedimentation technology there are flocculant usages big, COD and color removal are less efficient etc. asks
Topic, cause processing after be discharged still be difficult to it is up to standard.Active carbon adsorption effect is preferable, and main problem is handled with the extension of time
Effect can gradually be deteriorated, and be needed replacing after adsorption saturation, and operation difficulty is big, and operating cost is high, and regenerating active carbon is still difficult at present
Spend larger can not realize substantially.Most of high-level oxidation technology（Such as electrochemical oxidation process, photocatalysis）Processing cost is high, and
It is big to be engineered difficulty；The high-level oxidation technologies such as Fenton and ozone oxidation maturity is high, and technical risk is low, and investment is small, processing effect
Fruit is good, but needs that the higher hydrogen peroxide of cost is added, and adds many salts of a large amount of soda acids introducings and be unfavorable for waste water recycling；
Direct ozone oxidation, ozone utilization rate is low, of high cost, and treatment effect is undesirable.In membrane separation technique, nanofiltration and reverse osmosis to salt
It is higher with organic removal rate, desalted water can be prepared, but it is serious to be directly applied to coking wastewater fouling membrane, membrane lifetime
Low, investment and processing cost are high, it is necessary to be pre-processed before carrying out film, while concentrated water outlet becomes problem.
In order to solve drawbacks described above present in existing coking wastewater deep treatment, the utility model has developed a kind of coking
Advanced waste treatment apparatus.
Invention content
The purpose of this utility model is to provide a kind of coking wastewater deep treatment device.
The utility model is achieved through the following technical solutions：
A kind of coking wastewater deep treatment device, including it is sequentially connected biochemical unit, sedimentation basin, medium-speed filter, more
Medium filter, resin adsorption tower, ultrafiltration unit, ultrafiltration pond, nanofiltration unit, nanofiltration pond, reverse osmosis unit；
The resin adsorption tower is also connected with light electrolysis Fenton system, and light electrolysis Fenton system connect to be formed with biochemical unit
Cycle；
The nanofiltration unit is also connected with nanofiltration concentrated water pond, nanofiltration concentrated water unit, the nanofiltration concentrated water unit in turn
It is connect with reverse osmosis unit；
Shown in ultrafiltration unit connection ultrafiltration concentrated water pond.
Further, the sedimentation basin is connected to by siphoning installation with medium-speed filter, and the medium-speed filter is also
It is connected with metering pump, medium-speed filter is connected to by elevator pump with more medium filter；From precipitation after coking wastewater biochemical treatment
Pond is discharged siphon gravity flow and enters medium-speed filter, while flocculant PAC and PAM solution or PAFS are continuously added by metering pump
Deng into settling zone more medium filter after stirring.
The more medium filter is quartz filter（Flow control is in 160L/h or so）, in quartz filter
In go to enter functional resin adsorption column in water removal after remaining a small amount of suspended matter, waste water removes COD after the suction-operated of resin
It is discharged with after coloration, after resin adsorption is saturated, desorbing agent NaOH solution is added, desorption and regeneration is carried out to resin with activator, then
The resin given birth to continues next adsorption cycle.
The utility model is by coagulant, resin adsorption/desorption liquid light electrolysis Fenton, film distillation technology, and mixes
The advanced treating and reuse technology route of solidifying filtering-resin adsorption/desorption liquid Fenton oxidation reflux-UF membrane, solve tradition
The problems such as flocculant usage is big, efficiency is low, and desorption liquid is difficult, fouling membrane is serious and strong brine can not be disposed.Specifically,
It has the following advantages：（1）" coagulation and filtration-resin adsorption-desorption liquid Fenton oxidation reflux-UF membrane " is carried out for coking wastewater
Advanced treating, in processing procedure nanofiltration water outlet finally produce water for supplementing production cycle water, system for boiler feedwater, realize
Coking wastewater deep treatment " zero " discharge；（2）Waste water reaches existing coking wastewater discharge standard after resin adsorption, desorption
Liquid COD after light electrolysis Fenton drops to 1500mg/L hereinafter, having good biochemical, treated, and waste water returns from 6000mg/L
It returns to biochemical system and carries out biochemical treatment, solve desorption liquid intractable problem；（3）Utilize bastard coal ground mass aluminium polychloride, coal
Spoil synthesizing efficient poly silicate aluminium ferric flocculating agent is strengthened organic matter and total cyanogen in removal coking wastewater by number of mechanisms, is made
COD removal rates reach 40% or more, and total cyanogen is less than 1.0 mg/L；（5）Using the high strong brine of membrane distillation-crystallization treatment, to reverse osmosis
Concentrated water is concentrated, and salt rejection rate is held in 90% or more, the further concentration to reverse osmosis concentrated water, and the water rate of recovery is made to improve
10% or more.
The utility model realizes the full depth processing and reuse of coking wastewater processing system bio-chemical effluent, process operation
Stablize, effluent quality reaches quality of reused water standard by being repeatedly detected, and wherein pilot process producing water water quality reaches
GB50050-2007《Code for design of industrial recirculating cooling water treatment》Circulating cooling make-up water water standard, final producing water water quality reach
GB/T50109-2006《Industry softening desalination design specification》The standard of middle demineralized water.With 300m3/ h coking wastewater deep treatments
After engineering construction, 2,100,000 m of fresh water resource can be saved outside for 1,400,000 tons of demineralized water every year3, plant area is greatly lowered to new water
Water withdrawal, improve industrial water comprehensive utilization ratio, while realizing 526 tons of pollution reduction COD, 80 tons of ammonia nitrogen, volatile phenol
1.32 tons, 0.53 ton of cyanide.
The utility model avoids coking wastewater and arranges a series of environmental issues brought, social benefit, environmental benefit ten outside
It is point notable, at the same to coking industry existence and sustainable development, improve the ecological environment, save water resource and have far-reaching significance,
It is suitble to be promoted on a large scale in coking industry.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model coking wastewater deep treatment device；
In figure：1- biochemistry unit, 2- sedimentation basins, 3- medium-speed filters, 4- more medium filters, 5- resin adsorption towers, 6-
Ultrafiltration unit, 7- ultrafiltration pond, 8- nanofiltrations unit, 9- nanofiltrations pond, the reverse osmosis units of 10-；11- light electrolysis system, 12- Fentons
System, 13- nanofiltration concentrated waters pond, 14- nanofiltration concentrated waters unit, 15- ultrafiltration concentrated waters pond.
Specific implementation mode
The utility model is further detailed with reference to specific embodiment, it is to be understood that these embodiments
It is merely to illustrate the utility model rather than limitation the scope of the utility model.Those skilled in the art are in the utility model base
The various changes or modification made to the utility model on plinth, should all equally fall within the scope of protection of the utility model.
Embodiment 1
300m3/ h coking wastewater deep treatment flows：Bio-chemical effluent, highly effective coagulation, filtering, renewable filling adsorption/de-
Attached liquid light electrolysis Fenton reflux biochemistry, film separation system（Ultrafiltration+nanofiltration+reverse osmosis）；Specifically in device as shown in Fig. 1
It completes, including sequentially connected biochemical unit 1, sedimentation basin 2, medium-speed filter 3, more medium filter 4, resin adsorption tower 5, super
Filter group 6, ultrafiltration pond 7, nanofiltration unit 8, nanofiltration pond 9, reverse osmosis unit 10；Wherein resin adsorption tower 5 is also connected with micro- electricity
Solution system 11, Fenton system 12, Fenton system 12 connect formation cycle with biochemical unit 1；The nanofiltration unit 8 also connects successively
It is connected to nanofiltration concentrated water pond 13, nanofiltration concentrated water unit 14, the nanofiltration concentrated water unit 14 is connect with reverse osmosis unit 10；Ultrafilter
6 connection ultrafiltration concentrated water pond 15 of group；Wherein sedimentation basin 2 is connected to by siphoning installation with medium-speed filter 3, the medium-speed filter
It is also associated with metering pump, medium-speed filter 3 is connected to by elevator pump with more medium filter 4, and more medium filter 4 is quartz sand
Filter 4.
Concrete technology flow process is：
（1）Biochemical process handles coking and gives up, and waste water is connected to by siphoning installation with medium-speed filter from sedimentation basin after precipitation；
（2）Medium-speed filter：Total inflow is controlled in 330m3/ h or so, every backwash time of 3 filters regard draining feelings
Condition 10min or so, water consumption 45m3/ time or so, delivery turbidity≤20NTU, backwash water consumption is averaged water consume 19.55m3/h；
Medium-speed filter is connected with metering pump, is quantitatively pumped into gangue base aluminium polychloride（PAC）, with Fe3+, polyacrylamide
Amine（PAM）In the coking wastewater biochemical tail water for launching PH7.8-8.1 together, wherein flocculant dosage is 175mg/L-
225mg/L, PAM injected volume are 1mg/L, Fe3+Preferably FeCl3,Injected volume is n (FeCl3)/n(Al2O3)=0.2；
（3）More medium filter：Total inflow is controlled in 330m3/ h or so, 5 filter backwash times regard drainage situation
5--7min, water consumption are 32 m3/ time or so, delivery turbidity≤10NTU, backwash is averaged water consumption 15.24m3/h。
（4）Resin adsorption tower：Regeneration filler is adsorbed as NDA802 resin adsorption towers, and total inflow is controlled in 285m3/ h is left
The right side, 4425 m of separate unit unit filter run volume highest3, minimum 4027 m3, averagely reach 4300 m3, separate unit operation is by ≮ 30m3/ h is controlled
System；
（5）Light electrolysis Fenton system：Using intermitten service, the method for operation continuously discharged, regeneration of adsorbent beds once needs
8-10 hours, regeneration every time needed 1.2 tons of sodium hydroxides, 1 ton of hydrochloric acid, the regeneration solution concentration of sodium hydroxide be 5%, hydrochloric acid again
Raw a concentration of 2%, regeneration every time consumes 60 tons or so of demineralized water, and the desorption liquid after regeneration enters desorption liquid pool, by soda acid, electricity
It solves slot and adds hydrogen peroxide completion, consume each 100kg of soda acid every time, hydrogen peroxide is added by COD water quality situation, and throughput per hour is
6-8 m3/ h, it is outer defeated after Fenton is handled（COD≤1500mg/L、B/C≥0.3）, analysis data are shown in original record, average outer defeated
Amount is about 3 m3/ h or so；
（6）Ultrafiltration unit：Total inflow is controlled in 330m3/ h or so, separate unit ultrafiltration unit capacity of outlet water have reached 100m3/
H or more, the dense water rate control of single unit is in 5--7m3Between/h, every 45min backwash 1 time, each backwash water 3.75m3It is left
The right side, delivery turbidity≤1NTU；
（7）Nanofiltration unit：One section of intake pressure of operation is 0.8-0.9MPa, and production water flow is 80-90 m3/ h, concentrated stream
Amount is 12-15 m3/ h, equipment recycle-water rate are 80%, and water stabilization, salt rejection rate has reached 50% or more；
（8）Reverse osmosis unit：It is about 1.0-1.1MPa to run one section of intake pressure, and production water flow is 105-115 m3/h
（The somewhat higher 5-10 m of flowmeter3/h）, concentrated water flow is about 12-16 m3/ h, equipment recycle-water 88.80% effluent quality of rate are steady
Fixed, for water outlet conductivity within 80us/cm, the intersegmental pressure difference of equipment changes≤5%.
Embodiment 2
300m3/ h coking wastewater deep treatment flows：Bio-chemical effluent, highly effective coagulation, filtering, renewable filling adsorption/de-
Attached liquid light electrolysis Fenton reflux biochemistry, film separation system（Ultrafiltration+nanofiltration+reverse osmosis）Specifically in device as shown in Fig. 1
It completes, including sequentially connected biochemical unit 1, sedimentation basin 2, medium-speed filter 3, more medium filter 4, resin adsorption tower 5, super
Filter group 6, ultrafiltration pond 7, nanofiltration unit 8, nanofiltration pond 9, reverse osmosis unit 10；Wherein resin adsorption tower 5 is also connected with micro- electricity
Solution system 11, Fenton system 12, Fenton system 12 connect formation cycle with biochemical unit 1；The nanofiltration unit 8 also connects successively
It is connected to nanofiltration concentrated water pond 13, nanofiltration concentrated water unit 14, the nanofiltration concentrated water unit 14 is connect with reverse osmosis unit 10；Ultrafilter
6 connection ultrafiltration concentrated water pond 15 of group；Wherein sedimentation basin 2 is connected to by siphoning installation with medium-speed filter 3, the medium-speed filter
It is also associated with metering pump, medium-speed filter 3 is connected to by elevator pump with more medium filter 4, and more medium filter 4 is quartz sand
Filter 4.
Concrete technology flow process is：
（1）Biochemical process handles coking and gives up, and waste water is connected to by siphoning installation with medium-speed filter from sedimentation basin after precipitation；
（2）Medium-speed filter：Total inflow is controlled in 330m3/ h or so, every backwash time of 3 filters regard draining feelings
Condition 10min or so, water consumption 45m3/ time or so, delivery turbidity≤20NTU, backwash water consumption is averaged water consume 19.55m3/h；
Medium-speed filter is connected with metering pump, is quantitatively pumped into gangue base poly aluminium iron silicate（PAFS）, wherein for Al/Fe
Molar ratio is 3:1, (Al+Fe)/Si molar ratio are 13:1, dosage 125mg/L；
（3）More medium filter：Total inflow is controlled in 330m3/ h or so, 5 filter backwash times regard drainage situation
5--7min, water consumption are 32 m3/ time or so, delivery turbidity≤10NTU, backwash is averaged water consumption 15.24m3/h。
（4）Resin adsorption tower：Regeneration filler is adsorbed as NDA802 resin adsorption towers, and total inflow is controlled in 285m3/ h is left
The right side, 4425 m of separate unit unit filter run volume highest3, minimum 4027 m3, averagely reach 4300 m3, separate unit operation is by ≮ 30m3/ h is controlled
System；
（5）Light electrolysis Fenton system：Using intermitten service, the method for operation continuously discharged, regeneration of adsorbent beds once needs
8-10 hours, regeneration every time needed 1.2 tons of sodium hydroxides, 1 ton of hydrochloric acid, the regeneration solution concentration of sodium hydroxide be 5%, hydrochloric acid again
Raw a concentration of 2%, regeneration every time consumes 60 tons or so of demineralized water, and the desorption liquid after regeneration enters desorption liquid pool, by soda acid, electricity
It solves slot and adds hydrogen peroxide completion, consume each 100kg of soda acid every time, hydrogen peroxide is added by COD water quality situation, and throughput per hour is
6-8 m3/ h, it is outer defeated after Fenton is handled（COD≤1500mg/L、B/C≥0.3）, analysis data are shown in original record, average outer defeated
Amount is about 3 m3/ h or so；
（6）Ultrafiltration unit：Total inflow is controlled in 330m3/ h or so, separate unit ultrafiltration unit capacity of outlet water have reached 100m3/
H or more, the dense water rate control of single unit is in 5--7m3Between/h, every 45min backwash 1 time, each backwash water 3.75m3It is left
The right side, delivery turbidity≤1NTU；
（7）Nanofiltration unit：One section of intake pressure of operation is 0.8-0.9MPa, and production water flow is 80-90 m3/ h, concentrated stream
Amount is 12-15 m3/ h, equipment recycle-water rate are 80%, and water stabilization, salt rejection rate has reached 50% or more；
（8）Reverse osmosis unit：It is about 1.0-1.1MPa to run one section of intake pressure, and production water flow is 105-115 m3/h
（The somewhat higher 5-10 m of flowmeter3/h）, concentrated water flow is about 12-16 m3/ h, equipment recycle-water 88.80% effluent quality of rate are steady
Fixed, for water outlet conductivity within 80us/cm, the intersegmental pressure difference of equipment changes≤5%.
The above description is only the embodiments of the present invention, and it does not limit the scope of the patent of the present invention, every
Using equivalent structure or equivalent flow shift made by the utility model description, it is applied directly or indirectly in other phases
The technical field of pass, is equally included in the patent within the scope of the utility model.
Claims (3)
1. a kind of coking wastewater deep treatment device, which is characterized in that including sequentially connected biochemical unit, sedimentation basin, middling speed
Filter, more medium filter, resin adsorption tower, ultrafiltration unit, ultrafiltration pond, nanofiltration unit, nanofiltration pond, reverse osmosis machine
Group；
The resin adsorption tower is also connected with light electrolysis Fenton system, and light electrolysis Fenton system connect to be formed and follow with biochemical unit
Ring；
The nanofiltration unit is also connected with nanofiltration concentrated water pond in turn, nanofiltration concentrated water unit, the nanofiltration concentrated water unit with it is anti-
Permeate unit connection；
The ultrafiltration unit connection ultrafiltration concentrated water pond.
2. a kind of coking wastewater deep treatment device according to claim 1, which is characterized in that the sedimentation basin passes through
Siphoning installation is connected to medium-speed filter, and the medium-speed filter is also associated with metering pump, and medium-speed filter passes through elevator pump
It is connected to more medium filter.
3. a kind of coking wastewater deep treatment device according to claim 1 or 2, which is characterized in that the multimedium
Filter is quartz filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721632798.7U CN207619221U (en) | 2017-11-30 | 2017-11-30 | A kind of coking wastewater deep treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721632798.7U CN207619221U (en) | 2017-11-30 | 2017-11-30 | A kind of coking wastewater deep treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207619221U true CN207619221U (en) | 2018-07-17 |
Family
ID=62824971
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721632798.7U Active CN207619221U (en) | 2017-11-30 | 2017-11-30 | A kind of coking wastewater deep treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207619221U (en) |
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2017
- 2017-11-30 CN CN201721632798.7U patent/CN207619221U/en active Active
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