CN205500902U - High concentration chemical wastewater anaerobic treatment equipment - Google Patents
High concentration chemical wastewater anaerobic treatment equipment Download PDFInfo
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- CN205500902U CN205500902U CN201521107292.5U CN201521107292U CN205500902U CN 205500902 U CN205500902 U CN 205500902U CN 201521107292 U CN201521107292 U CN 201521107292U CN 205500902 U CN205500902 U CN 205500902U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model provides a high concentration chemical wastewater anaerobic treatment equipment, includes: reaction unit, air water processing system, gas -water separation device, gas scrubbing sweetener, blending tank and water distribution system. Reaction unit is connected with the gas scrubbing sweetener through the hole of exhausting, and reaction unit passes through the back flow and is connected with air water processing system, and air water processing system is connected with reaction unit, gas scrubbing sweetener, gas -water separation device and blending tank, and the blending tank is connected with the water inlet, and the blending tank is connected with air water processing system and water distribution system. The utility model discloses compare with traditional equipment and cancel three -phase separator, reduce the anaerobic reactor height, reduce the reaction unit investment, improve reaction unit's effective use volume, through the gas scrubbing device, get rid of the hydrogen sulfide gas body in the gas, prevent to produce secondary pollution, that utilizes the circulating pump inhales the journey negative pressure, can not excessive income atmosphere, cause secondary pollution, because hybrid separation device and reactor separation, improving treatment capacity.
Description
Technical field
This utility model relates to a kind of sewage disposal device, is specifically related to a kind of high-concentration chemical industry sewage anaerobic treatment equipment.
Background technology
Along with developing rapidly of industrial or agricultural and being continuously increased of population, the demand of industrial products, particularly chemical products is continued to increase by people.And the fast development of chemical industry, also result in the generation of a large amount of trade effluent containing high concentration organic contaminant.Owing to chemical engineering sewage has pollutant levels height, poisonous and harmful substance content is high, and nutrient substance is single, the feature of biodegradability difference.Existing sewage disposal technology is for the technique of chemical industry sewage many employings materialized pretreatment+anaerobism (anoxia)+aerobic+advanced treating, and its mesophytization part relies primarily on anaerobism to process the organic pollution of the overwhelming majority in sewage.
Current technology present situation is to use the technique such as UASB or acidification hydrolization preferable for the wastewater treatment efficiency of the industries such as the food processing of good biodegradability, it is difficult to normal startup optimization owing to the characteristic of chemical industry sewage determines the employing technique such as traditional UASB or acidification hydrolization, i.e. allow to start, do not reach preferable organic loading, and can only run reluctantly under reduced levels yet.
And the emphasis that anaerobism can normally start and run, it is again the recoverable amount of anaerobic sludge.High anaerobic sludge concentration, directly determines high process load and treatment effeciency.And the feature of the low biodegradability of wastewater from chemical industry, the most serious formation inhibiting anaerobic sludge and growth.It can be said that chemical engineering sewage anaerobic reactor can be properly functioning it is critical that the formation of high sludge concentration environment.
The utility model patent " processing high-concentration chemical industry sewage anaerobic reactor " (patent No.: ZL 2,009 2 0066692.4) authorized is disclosed, by to the tradition water inlet of anaerobic reactor, backflow, water distribution, the improvement of three-phase separating device, it is achieved that increase substantially the purpose of sludge concentration.Solve the problem that anaerobic reactor using effect on wastewater from chemical industry is poor to a great extent, but from the operational effect of a period of time, when in reactor, sludge concentration reaches (more than 20g/L) after to a certain degree, characteristic due to chemical engineering sewage, cause the anaerobic sludge in reactor to start in a large number to run off, it is impossible to improve anaerobic sludge concentration further.
As in figure 2 it is shown, in the anaerobic reactor improved, high concentration organic sewage backflow mixed liquor with reflux 2 in conventional hybrid tank 1 mixes, and after mixing, sewage enters water-distributing device 4 by pressure equaliser 3.Sewage forms up-flow after water-distributing device water distribution, between water-distributing device 4 and three phase separator 6 and excess sludge collection device 7, forms high concentration anaerobic sludge layer on anaerobism packing layer 5.
Having obvious upflow velocity poor between three phase separator 6 and packing layer 5, its difference is the backflow water yield.By controlling this mode of return flow, realize forming high upflow velocity region in reaction zone, make mud be thoroughly mixed with water.And in three phase separator 6 region needing low speed separated sludge, the most significantly reduce upflow velocity, thus reach the purpose of high efficiency separation mud.Thus ensure that substantial amounts of anaerobic sludge stays in the reactor to a certain extent.
Mud, sewage and methane gas that low speed rises enter three phase separator 6, the three phase separation of mud, water, gas is carried out at this, sewage after separation drains into outside pond by effluent collection device 4, and methane gas enters air through exhaust apparatus 8, and after separation, anaerobic sludge falls after rise to suspended sludge layer.This modified model anaerobic reaction device, the sludge concentration being greatly improved in anaerobic reaction device, but by longtime running, find to still suffer from following problem:
1, under chemical engineering sewage environment, anaerobic sludge typically ratio is relatively decentralized, sludge density is less, and the sedimentation velocity in water is relatively slow, for obtaining preferable mud-water separation effect, the upflow velocity in three phase separator region must be reduced, improving region height, this results in reactor effecting reaction volume and reduces, and processes load for guarantee, only increase reactor overall volume, cause plant investment to increase；
2, due to the increase of anaerobic reactor volume, for ensureing the upflow velocity of conversion zone, it is necessary to increase considerably capacity of returns, cause the increase of energy consumption；
3, after in anaerobic reactor, sludge concentration is more than 20g/L, even if by above method, still cannot ensure effective mud-water separation, in causing reactor, sludge concentration cannot improve further, and water outlet band mud, and anaerobic sludge runs off more serious.The treatment effeciency of whole reactor cannot improve further；
4, after relatively HI high impact load occurs in water inlet, anaerobic sludge character is deteriorated, and density diminishes further, and sludge loss is further exacerbated by, after causing each strict impact load to occur, it is necessary to recovered by the mud of a period of time, could again reach Design Treatment ability.This causes serious impact to the properly functioning of system；
5, owing to major part chemical engineering sewage containing a certain amount of sulfate radical, under anaerobic environment, easily form hydrogen sulfide gas, be not enough to process its whole absorptions by original water seal arrangement, cause partial vulcanization hydrogen excessive.
Therefore, a series of improvement has been carried out in order to solve the problems referred to above.
Utility model content
The purpose of this utility model is, it is provided that a kind of high-concentration chemical industry sewage anaerobic treatment equipment, to overcome the disadvantages mentioned above existing for prior art and deficiency.
A kind of high-concentration chemical industry sewage anaerobic treatment equipment, it is characterized in that, including: reaction unit, air water processing system, gas and water separator, gas scrubbing desulphurization plant, blending tank and water distribution system 6, described reaction unit is connected with gas scrubbing desulphurization plant by steam vent, described reaction unit is connected with air water processing system by return duct, described air water processing system is connected with reaction unit, gas scrubbing desulphurization plant, gas and water separator and blending tank, described blending tank is connected with water inlet, and described blending tank is connected with air water processing system and water distribution system 6；
Wherein, described air water processing system includes: gas and water mixer, mixed liquor circulating pump, inner pressed cross-flow ultra-filtration and separation membrane pipe module and stainless steel mesh, described gas and water mixer is connected with reaction unit and gas washing desulphurization equipment, one end of described mixed liquor circulating pump is connected with gas and water mixer, the other end of described mixed liquor circulating pump is connected with inner pressed cross-flow ultra-filtration and separation membrane pipe module, described inner pressed cross-flow ultra-filtration and separation membrane pipe module is connected with gas and water separator and blending tank, and described stainless steel mesh is located in gas and water mixer.
Further, described reaction unit includes: body, mixed-liquor return device, packing layer, return duct and steam vent, described mixed-liquor return device, packing layer, return duct and steam vent are located at internal, described packing layer is located at the lower section of mixed-liquor return device, one end of described return duct is connected with mixed-liquor return device, the other end of described return duct is connected with air water processing system, and described steam vent is connected with gas scrubbing desulphurization plant.
Further, described gas and water separator includes: gas water separation tank, QI KOU, water inlet and outlet pipe, and the inwall two ends of described gas water separation tank are connected with water inlet and outlet pipe, and described QI KOU is located at the top of gas water separation tank.
Further, the internal diameter of described inner pressed cross-flow ultra-filtration and separation membrane pipe module controls 8～10mm.
Further, membrance separation aperture 0.2～0.4 μm of described inner pressed cross-flow ultra-filtration and separation membrane pipe module.
The beneficial effects of the utility model:
1, fully phasing out three phase separator, anaerobic reactor height is greatly lowered, reduce reaction unit investment, that improves reaction unit effectively uses volume；
2, by gas cleaning unit, remove the hydrogen sulfide gas in gas, prevent secondary pollution.After process, methane gas purity is high；
3, by Liqiud-gas mixing device, the methane gas part that system produces is mixed into segregation apparatus, improves the shearing force of inner pressed cross-flow ultra-filtration and separation membrane pipe module, prevent membrane tube from blocking；
4, anaerobic sludge thoroughly, can be intercepted in reaction unit by mud, water, gas three phase separation completely, and sludge concentration can be improved the level to the highest 70g/L by original 20g/L, be greatly improved the treatment effeciency of reactor；
5, anaerobic reactor toggle speed is fast, and sludge concentration promotes rapidly；
6, utilizing the suction negative pressure of circulating pump, anaerobic device top and the outer aerofluxus of part are sucked Liqiud-gas mixing device, the H 2 S-containing gas of whole device flows under negative pressure, will not overflow into outward air, cause secondary pollution；
7, it is kept completely separate with reactor due to hybrid separation device, is particularly suitable for the poor anaerobism of original operational effect and the transformation of anoxic pond, on the premise of not changing original cell body structure, increase substantially the disposal ability of original device；
8, capacity of resisting impact load is strong, is particularly suitable for the use that high-concentration chemical industry sewage processes.
Accompanying drawing explanation
Fig. 1 is structure chart of the present utility model.
Fig. 2 is the structure chart of old processing equipment.
Reference:
Reaction unit 100, body 110, mixed-liquor return device 120, packing layer 130, return duct 140 and steam vent 150.
Air water processing system 200, gas and water mixer 210, mixed liquor circulating pump 220, inner pressed are wrong
Stream ultra-filtration and separation membrane pipe module 230 and stainless steel mesh 240.
Gas and water separator 300, gas water separation tank 310, QI KOU 320, water inlet 330 and outlet pipe 340.
Gas scrubbing desulphurization plant 400, blending tank 500 and water distribution system 600.
Conventional hybrid tank 1, reflux 2, pressure equaliser 3, water-distributing device 4, anaerobism packing layer 5, three phase separator 6, excess sludge collection device 7 and exhaust apparatus 8.
Detailed description of the invention
Below in conjunction with specific embodiment, this utility model is made progressive explanation.Should be understood that following example are merely to illustrate this utility model not for limiting scope of the present utility model.
Embodiment 1
Fig. 1 is structure chart of the present utility model.Fig. 2 is the structure chart of old processing equipment.
As shown in Figure 1, a kind of high-concentration chemical industry sewage anaerobic treatment equipment, including: reaction unit 100, air water processing system 200, gas and water separator 300, gas scrubbing desulphurization plant 400, blending tank 500 and water distribution system 600, reaction unit 100 is connected with gas scrubbing desulphurization plant 400 by steam vent, reaction unit 100 is connected with air water processing system 200 by return duct, air water processing system 200 and reaction unit 100, gas scrubbing desulphurization plant 400, gas and water separator 300 and blending tank 500 connect, blending tank 500 is connected with water inlet, blending tank 500 is connected with air water processing system 200 and water distribution system 600；
nullWherein，Air water processing system 200 includes: gas and water mixer 210、Mixed liquor circulating pump 220、Inner pressed cross-flow ultra-filtration and separation membrane pipe module 230 and stainless steel mesh 240，Gas and water mixer 210 is connected with reaction unit 100 and gas washing desulphurization equipment 400，One end of mixed liquor circulating pump 220 is connected with gas and water mixer 210，The other end of mixed liquor circulating pump 220 is connected with inner pressed cross-flow ultra-filtration and separation membrane pipe module 230，Inner pressed cross-flow ultra-filtration and separation membrane pipe module 230 is connected with gas and water separator 300 and blending tank 500，Stainless steel mesh 240 is located in gas and water mixer 210，After the backflow of the gas transmitted by gas and water separator 300 and reaction unit 100 backflow is sufficiently mixed，After mixed liquor circulating pump 220 supercharging，Enter inner pressed cross-flow ultra-filtration and separation membrane pipe module 230，Mixed liquor is in membrane tube internal flow，After separation, combined fluid return is to the bottom water distribution system 600 of reaction unit 100，After separation, clear liquid enters gas and water separator 300；
nullReaction unit 100 includes: body 110、Mixed-liquor return device 120、Packing layer 130、Return duct 140 and steam vent 150，Mixed-liquor return device 120、Packing layer 130、Return duct 140 and steam vent 150 are located at internal，Packing layer is located at the lower section of mixed-liquor return device 120，One end of return duct 140 is connected with mixed-liquor return device 120，The other end of return duct 140 is connected with air water processing system 200，Steam vent 150 is connected with gas scrubbing desulphurization plant 400，Mixed-liquor return device 120 accesses the gas and water mixer 210 of air water processing system 200 by return duct 140，80 mesh stainless steel meshs 240 are set in return duct 140，Can stop that bulk float enters later separation device，Utilize the screen cloth of multi-layer intercrossed setting simultaneously，Play the purpose of strengthening mixing wastewater with air，Corresponding mixing wastewater with air ratio controls in the range of 2:1～3:1，There is optimal mixed effect.
The headroom of reaction unit 100 is full of the methane gas containing hydrogen sulfide, after pipe pipe is collected, the suction negative pressure promoted by mixed liquor circulating pump 220, gas is pumped to gas scrubbing desulphurization plant 400, alkali liquor is injected in device, alkali liquor height is calculated by circulating pump total (pumping) head and determines, typically take 300～500mm, held concurrently fluid-tight effect simultaneously, hydrogen sulfide in gas is absorbed at this, the discharge of alkali liquor and supplementing is carried out automatically by built-in pH meter, by adjusting alkali liquor height, realize reaction unit 100 headspace pressure less than atmospheric pressure, negative pressure is run, be conducive to the release of gas in sewage.
Gas and water separator 300 includes: gas water separation tank 310, QI KOU 320, water inlet 330 and outlet pipe 340, the inwall two ends of gas water separation tank 310 are connected with water inlet 330 and outlet pipe 340, QI KOU 320 is located at the top of gas water separation tank 310, after separation, clear liquid is in gas and water separator 300, realize further gas-water separation, to ensure being kept completely separate of methane gas and sewage, after separation, clear liquid enters aftertreatment device, after separation, gas passes through valve regulated, part backflow is supplemented to gas and water mixer 210, and residue methane gas is processed by the outer row of QI KOU 320.
Mixed liquor flow rate within inner pressed cross-flow ultra-filtration and separation membrane pipe module 230 controls 2.0～4.0m/s.
The internal diameter of inner pressed cross-flow ultra-filtration and separation membrane pipe module 230 controls, 8～10mm, have optimal separation effect.
Membrance separation aperture 0.2～0.4 μm of inner pressed cross-flow ultra-filtration and separation membrane pipe module 230, under this aperture, can be completely achieved the purpose retaining anaerobic sludge, too small aperture, will increase substantially energy consumption and cleaning frequency.
Inner pressed cross-flow ultra-filtration and separation membrane pipe module 230 is under conditions of mixed liquor sludge concentration 50～70g/L, and the membrane flux of inner pressed cross-flow ultra-filtration and separation membrane pipe module 230 controls under conditions of 90～60L/ (m2.h) as optimum economical operation parameter.
The separation water yield of pressure type cross-flow ultra-filtration and separation membrane pipe module 230 and backflow water yield Ratio control are between 1:40～1:60.
Compared with traditional process Processes and apparatus, this utility model cancels three phase separator in anaerobic device, and by anaerobic reactor height reduction 20%, whole device is complete, and plant investment is greatly lowered, and improves the dischargeable capacity of reactor.
By gas scrubbing desulphurization plant 400 device, can the pollution of environment be down to minimum by hydrogen sulfide.
By increasing gas and water mixer 210, it is achieved that whole anaerobic reactor runs under condition of negative pressure, it is therefore prevented that hydrogen sulfide gas excessive.
By using inner pressed cross-flow ultra-filtration and separation membrane pipe module 230, the loss of anaerobic sludge can be entirely prevented from.
From actual angle, for fine chemistry industry middle and high concentration production of acetic acid sewage disposal, the present embodiment have chosen a kind of N-methyl caprolactam and produce combined sewage, sewage major pollutants are acetate, diisobutylene and byproduct of reaction, and wherein sulfate ion mean concentration is less than 1500.00mg/L, CODCr mean concentration 43000.00～55000.00mg/L less than 2500.00mg/L, ammonia nitrogen concentration less than 100.00mg/L, total nitrogen concentration.
Former anaerobic reaction device uses conventional UASB, due to entering organic matter of water excessive concentration, and there is acetate generation weakly acidic condition, and system cannot improve to design load for a long time, and water outlet a large amount of band mud.Stable anaerobic sludge concentration cannot be kept.
After this utility model processes, water outlet CODCr mean concentration is stably held in below 2500.00mg/L.Meanwhile, sludge concentration is stably held in 70g/L.System can operate in complete stabilityOrganic loading level.Device is not constituted a threat to by the sewage with impact load that in factory, repeatedly overhaul of the equipments is discharged.
Embodiment 2
From actual angle, for fine chemistry industry middle and high concentration production of acetic acid sewage disposal, the present embodiment have chosen a kind of N and produce antitumor, contrast agent, the chemosynthesis crude drug sewage of anesthetis etc., plant area's sewage is mainly based on trade effluent, there is part dining room sanitary sewage, the contaminated wastewater factor: CODCr, pH, total nitrogen, total P, TDS, main component has ethanol, acetone, methanol, chloroform, dichloromethane, oxolane, triethylamine hydrochloride, toluene, DMSO, petroleum ether, DMF, glycol dimethyl ether, acetonitrile, DMAc, Polyethylene Glycol, ammonia, hydrochloric acid etc..Wherein sulfate ion mean concentration is less than 1500.00mg/L, CODCr mean concentration 6000-10000mg/L less than 2500.00mg/L, ammonia nitrogen concentration less than 100.00mg/L, total nitrogen concentration.
Former anaerobic reaction device uses conventional UASB, designs CODCr loadSystem cannot improve to design load for a long time, and water outlet a large amount of band mud.Stable anaerobic sludge concentration cannot be kept.
After this utility model processes, water outlet CODCr mean concentration is stably held in below 1500.00mg/L.Meanwhile, sludge concentration is stably held in 70g/L.System can operate in complete stabilityOrganic loading level.Device is not constituted a threat to by the sewage with impact load that in factory, repeatedly overhaul of the equipments is discharged.
Being illustrated detailed description of the invention of the present utility model above, but this utility model is not limited thereto, without departing from objective of the present utility model, this utility model can also have various change.
Claims (5)
- null1. a high-concentration chemical industry sewage anaerobic treatment equipment，It is characterized in that，Including: reaction unit (100)、Air water processing system (200)、Gas and water separator (300)、Gas scrubbing desulphurization plant (400)、Blending tank (500) and water distribution system (600)，Described reaction unit (100) is connected with gas scrubbing desulphurization plant (400) by steam vent，Described reaction unit (100) is connected with air water processing system (200) by return duct，Described air water processing system (200) and reaction unit (100)、Gas scrubbing desulphurization plant (400)、Gas and water separator (300) and blending tank (500) connect，Described blending tank (500) is connected with water inlet，Described blending tank (500) is connected with air water processing system (200) and water distribution system (600)；Wherein, described air water processing system (200) including: gas and water mixer (210), mixed liquor circulating pump (220), inner pressed cross-flow ultra-filtration and separation membrane pipe module (230) and stainless steel mesh (240), described gas and water mixer (210) is connected with reaction unit (100) and gas washing desulphurization equipment (400), one end of described mixed liquor circulating pump (220) is connected with gas and water mixer (210), the other end of described mixed liquor circulating pump (220) is connected with inner pressed cross-flow ultra-filtration and separation membrane pipe module (230), described inner pressed cross-flow ultra-filtration and separation membrane pipe module (230) is connected with gas and water separator (300) and blending tank (500), described stainless steel mesh (240) is located in gas and water mixer (210).
- A kind of high-concentration chemical industry sewage anaerobic treatment equipment the most according to claim 1, it is characterized in that: described reaction unit (100) including: body (110), mixed-liquor return device (120), packing layer (130), return duct (140) and steam vent (150), described mixed-liquor return device (120), packing layer (130), return duct (140) and steam vent (150) are located at internal, described packing layer is located at the lower section of mixed-liquor return device (120), one end of described return duct (140) is connected with mixed-liquor return device (120), the other end of described return duct (140) is connected with air water processing system (200), described steam vent (150) is connected with gas scrubbing desulphurization plant (400).
- A kind of high-concentration chemical industry sewage anaerobic treatment equipment the most according to claim 1, it is characterized in that: described gas and water separator (300) including: gas water separation tank (310), QI KOU (320), water inlet (330) and outlet pipe (340), the inwall two ends of described gas water separation tank (310) are connected with water inlet (330) and outlet pipe (340), and described QI KOU (320) is located at the top of gas water separation tank (310).
- A kind of high-concentration chemical industry sewage anaerobic treatment equipment the most according to claim 1, it is characterised in that: the internal diameter of described inner pressed cross-flow ultra-filtration and separation membrane pipe module (230) controls 8～10mm.
- A kind of high-concentration chemical industry sewage anaerobic treatment equipment the most according to claim 1, it is characterised in that: membrance separation aperture 0.2～0.4 μm of described inner pressed cross-flow ultra-filtration and separation membrane pipe module (230).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521107292.5U CN205500902U (en) | 2015-12-28 | 2015-12-28 | High concentration chemical wastewater anaerobic treatment equipment |
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| CN201521107292.5U CN205500902U (en) | 2015-12-28 | 2015-12-28 | High concentration chemical wastewater anaerobic treatment equipment |
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| CN205500902U true CN205500902U (en) | 2016-08-24 |
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| CN201521107292.5U Expired - Fee Related CN205500902U (en) | 2015-12-28 | 2015-12-28 | High concentration chemical wastewater anaerobic treatment equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111072144A (en) * | 2020-02-14 | 2020-04-28 | 怡灏环境技术有限公司 | Device for recycling organic acid and synchronously deodorizing by using UASB (upflow anaerobic sludge blanket) |
-
2015
- 2015-12-28 CN CN201521107292.5U patent/CN205500902U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111072144A (en) * | 2020-02-14 | 2020-04-28 | 怡灏环境技术有限公司 | Device for recycling organic acid and synchronously deodorizing by using UASB (upflow anaerobic sludge blanket) |
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Granted publication date: 20160824 Termination date: 20201228 |
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