CN102659282A - Synchronous denitrification and dephosphorization sewage treatment device for immobilized microorganism CASS (cyclic activated sludge system) - Google Patents

Synchronous denitrification and dephosphorization sewage treatment device for immobilized microorganism CASS (cyclic activated sludge system) Download PDF

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CN102659282A
CN102659282A CN2012101197291A CN201210119729A CN102659282A CN 102659282 A CN102659282 A CN 102659282A CN 2012101197291 A CN2012101197291 A CN 2012101197291A CN 201210119729 A CN201210119729 A CN 201210119729A CN 102659282 A CN102659282 A CN 102659282A
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pond
synchronous denitrification
waste disposal
immobilized microorganism
disposal plant
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CN2012101197291A
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Chinese (zh)
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CN102659282B (en
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周林成
王引平
刘景峰
刘红刚
赵亚斌
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中山市子源生物环境科技有限公司
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Abstract

The invention discloses a synchronous denitrification and dephosphorization sewage treatment device for an immobilized microorganism CASS (cyclic activated sludge system). The synchronous denitrification and dephosphorization sewage treatment device comprises a pond. A water inlet tube is arranged at one end of the pond, a water outlet tube is arranged at the other end of the pond, a hollow gridding reaction box is disposed in the pond, immobilized microorganism carriers are arranged in the hollow gridding reaction box, and an aeration device is arranged at the bottom of the pond. The synchronous denitrification and dephosphorization sewage treatment device aims to overcome shortcomings in the prior art, is simple in structure, and is efficient and stable.

Description

A kind of immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant
Technical field
The present invention relates to a kind of immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant.
Background technology
In recent years, along with the sharp increase of China's urban population, increasing phosphorus and nitrogen enters water body, agricultural run-off etc. in addition, and the body eutrophication phenomenon is more and more serious.Therefore the city domestic sewage discharging has become the major control target of water environmental problems, and wherein the control of nitrogen, phosphorus is the important control target of urban sewage discharge and water environment protection." urban wastewater treatment firm pollutant emission standard " GB18918-2002 that China implemented on July 1st, 2003 has all made clear and definite and strict regulation to the emission standard of nitrogen, phosphorus.CASS (Cyclic activated sludge system) full name circulating active sludge method is a kind of circular gap sewage disposal technology with denitrogenation dephosphorizing function.This technology grows up on the basis of SBR, and promptly feed-water end has increased a biological selector in the SBR pond, has realized continuous water inlet (deposition phase, drainage period be water inlet continuously still), intermittent drainage.The technological process of biological selector is followed the matrix accumulation of active sludge--regeneration theory; Make active sludge in selector switch, experience the absorption phase (matrix accumulation) of a high loading; Subsequently in main reaction region substrate degradation stage of experience, with whole process and the mud regeneration of accomplishing whole substrate degradation than underload.But with the active sludge is main cyclic activated sludge system; Microorganism concn is generally at 1500-3000mg/L; Though can be along with the increase of influent load, microorganism concn can increase, after acquiring a certain degree; Seriously make it to continue to increase because of running off, cause the difficult propagation of long nitrifier of generation cycle.In addition, when the sewage water quantity and quality fluctuates when big, anti-waterpower of system and concentration anti impulsion load ability are low, are inappropriate for the increase and the senior microbial growth propagation of living weight, thereby cause dephosphorization and denitrification effect unstable.In addition, be deposited in the sludge blanket of bottom during traditional CAS S process drain for not disturbance, prevent that the swimmer of the water surface from discharging with current, be provided with usually and strain hydrophone, it is higher to strain the hydrophone price, and investment cost is increased.
Summary of the invention
The objective of the invention is in order to overcome weak point of the prior art, immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant a kind of simple in structure, efficient, stable is provided.
In order to achieve the above object, patent of the present invention adopts following scheme:
A kind of immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant; Include the pond body; On body one end of described pond, be provided with water inlet pipe, the body the other end is provided with rising pipe in described pond, in the body of described pond, is provided with the hollow grid reaction box; In described hollow grid reaction box, be provided with fixed microorganism carrier, on described pond body bottom, be provided with aerating apparatus.
Aforesaid a kind of immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant; It is characterized in that described hollow grid reaction box includes many waffle slabs; Described waffle slab connects to form a casing successively; On described casing, be hinged with a loam cake, in described casing, be provided with accommodation space, described fixed microorganism carrier is arranged in the described accommodation space.
Aforesaid a kind of immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant is characterized in that described waffle slab is made up of a plurality of crisscross ribs, and mesh is 1.0-2.0cm.
Aforesaid any immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant is characterized in that described fixed microorganism carrier is the macroporous netlike carrier.
Aforesaid any immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant is characterized in that said fixed microorganism carrier is 30-50% at the filling ratio of hollow grid reaction box.
Aforesaid a kind of immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant is characterized in that described aerating apparatus includes the aerated conduit that is arranged in the body bottom, pond, is provided with several aeration heads on described aerated conduit.
Aforesaid a kind of immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant is characterized in that described aeration head is aeration mouth or aeration tube.
Aforesaid a kind of immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant is characterized in that described macroporous netlike carrier is a nanocomposite polyurethane foams.
Aforesaid a kind of immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant is characterized in that described nanocomposite polyurethane foams is a square, and size is 8.0cm 3-27.0cm 3
Aforesaid a kind of immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant is characterized in that described nanocomposite polyurethane foams density is that density is 12.0m 3/ kg-24.0m 3/ kg, percentage of open area are 90%-96%.
Aforesaid a kind of immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant is characterized in that described rib 43 processed by hard polyethylene or acrylic plastering.
Patent immobilized microorganism CASS waste disposal plant of the present invention is comprehensive and optimized the characteristics of traditional CAS S technology, replenishes its deficiency, traditional relatively cyclic activated sludge system, and immobilized microorganism CASS waste disposal plant has following obvious characteristic:
1, promoted the microbial biomass of pre-reaction zone and main reaction region significantly, made the impact resistance of total system promote, guaranteed that system can realize the stably reaching standard discharging under the situation of high density water inlet.Raising is used for biodegradable microorganism concn, is the basis that guarantees processing efficiency, is the prerequisite that realizes shortening reaction times, increase treatment capacity, simplification reaction process and reduce working cost.To the cyclic activated sludge system of routine, microorganism concn is generally at 1500-3000mg/L, though can be along with the increase of influent load, microorganism concn can increase, and after acquiring a certain degree, seriously makes it to continue to increase because of running off.Through in pre-reaction zone and main reaction region, fixed microorganism carrier being set, microorganism concn can reach 22-40g/L, is 7-8 times of conventional activated sludge method;
2, through immobilized microorganism, the effective poky nitrifying bacteria community of immobilization prolongs mud age, thereby has greatly promoted the quantity of the interior nitrifying bacteria community of reaction zone, has made its nitrated capability improving more than 5 times;
3, the macroporous netlike carrier is made an addition to the hollow grid case; Constitute the hollow grid reaction box; The activity space of hollow grid case restriction carrier is equivalent to be divided into the dozens of mini-reactor to whole pond body, in each reactor drum; Carrier can unmanaged flexibility in grid; The unique three-dimensional arrangement of each reaction member makes to have aerobic, anoxic and three kinds of microenvironments of anaerobism in the unit carrier simultaneously, can carry out the absorption of nitrated, the phosphorus of organic aerobic decomposition, nitride, can carry out a series of processes such as release of anaerobic hydrolysis, acidifying, denitrification and phosphorus again.Because these are reflected in the identical carrier and carry out; Can carry out inner mass transfer; Thereby absorption and release and the hydrolysis of nitrification and denitrification, phosphorus and aerobic equally correlated process can be carried out in identical carrier in succession, need as ordinary method, not realize through means such as backflows.Because inside has formed from aerobic to anaerobism continually varying microenvironment in the hollow grid reaction box; For the mikrobe of various different qualities provides good life condition; Thereby in the unit carrier, formed from nutrition-bacterium-protozoon-metazoal food chain; A large amount of metazoans and protozoon engulf aging bacterium, make bacterium have extremely strong activity always, and processing efficiency is high, sludge output is few.In each hollow grid reaction box; Fixed microorganism carrier constantly is in suspended state, and carrier surface upgrades fast, thereby has increased mikrobe and nutraceutical touch opportunity; And the meta-bolites of mikrobe is removed as soon as possible, for the existence of mikrobe provides splendid condition.Because the hollow grid reaction box is positioned in the whole pond, carrier is in continuous float state in water simultaneously, and bubble is had tangible repetition cutting action, thereby the dissolved oxygen value in the water is improved, and oxygen transfer efficiency increases.The continuous motion of carrier with and and bubbles strike, carrier is continuously washed, thereby has prevented the obstruction of carrier, and kept the high activity of bacterium.
4, can be through the hollow grid case with different apertures; The urethane carrier of different porosities is dispersed in the whole C ASS biochemistry pool more uniformly; Reduce the wearing and tearing between the carrier in service, prolonged the life-span of carrier, improve the mass transfer effect of carrier and waste water; Prolong effective duration of contact of waste water and carrier, promote the ability of biochemical system on the whole.
5, patent water-freeing arrangement of the present invention is simple, easy to operate.Be deposited in the sludge blanket of bottom during traditional CAS S process drain for not disturbance, prevent that the swimmer of the water surface from discharging with current, be provided with usually and strain hydrophone.Patent of the present invention is owing to added the hollow grid reaction box, and after aeration stopped, mikrobe together was deposited in hollow grid reaction box bottom with carrier; At this moment carrier has played the effect of bacteria bed, thereby the influence of water flow disturbance when not only mikrobe does not receive draining, and supernatant does not have swimmer basically; Strain hydrophone so need not to be provided with, but be provided with rising pipe, only need when draining, to open the rising pipe valve at draining lowest water level place; Device is simple, and is easy to operate.
In sum, immobilized microorganism CASS waste disposal plant has that structures are few, technical process is simple, arrange compactness, flexible operation, floor space are less, treatment effect feature and advantage preferably.Phosphor-removing effect is about 92%, and NH 4 +The clearance of-N reaches more than 99%, and the TN clearance reaches more than 88%.
Description of drawings
Fig. 1 is a synoptic diagram of the present invention.
Fig. 2 is the synoptic diagram of hollow grid reaction box of the present invention.
Embodiment
Below in conjunction with description of drawings and embodiment the present invention is further described:
A kind of immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant as illustrated in fig. 1 and 2; Include pond body 1; On body 1 one ends of described pond, be provided with water inlet pipe 2, body 1 the other end is provided with rising pipe 3 in described pond, in described pond body 1, is provided with hollow grid reaction box 4; In described hollow grid reaction box 4, be provided with fixed microorganism carrier 5, on body 1 bottom, described pond, be provided with aerating apparatus 6.
As shown in Figure 2; Hollow grid reaction box 4 described in the present invention includes many waffle slabs 41; Described waffle slab connects to form a casing 42 successively; On described casing 42, be hinged with a loam cake, in described casing 42, be provided with accommodation space, described fixed microorganism carrier 5 is arranged in the described accommodation space.
Waffle slab 41 described in the present invention is made up of a plurality of crisscross ribs 43, and mesh is 1.0-2.0cm.Described rib 43 is processed by hard polyethylene or acrylic plastering.Fixed microorganism carrier 5 is limited in hollow grid reaction box 4 and constitutes the filtering layer that floats, and hollow grid reaction box 4 is rectangular parallelepiped or square, and the volume size is the 1.0-1.5 cubic meter; Be convenient to install, change and maintenance; Size of mesh opening is adjustable according to the fixed microorganism carrier size, and the nano compound polyurethane carrier is limited in the grid case, and the nano compound polyurethane carrier is a cubes; Be of a size of 2.0-3.0cm; The size of mesh opening of hollow grid reaction box is 1.0-2.0cm, and carrier is evenly distributed in the grid case, make microbial fixed carrier in the pond intravital being evenly distributed.
Fixed microorganism carrier 5 described in the present invention is the macroporous netlike carrier.Said fixed microorganism carrier 5 is 30-50% at the filling ratio of hollow grid reaction box 4.Described macroporous netlike carrier is a nanocomposite polyurethane foams.Described nanocomposite polyurethane foams is a square, and size is 8.0cm 3-27.0cm 3
Aerating apparatus 6 described in the present invention includes the aerated conduit that is arranged in the body bottom, pond, on described aerated conduit, is provided with several aeration heads 61.Wherein said aeration head 61 is aeration mouth or aeration tube.
Fig. 1 is the synoptic diagram of immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant; Pond body 1 is square or circular, and aerating apparatus 6 is settled in the bottom water inlet at the bottom of the pond; Adopt the compensation aeration of dotted line; Provide biochemical reaction required oxygen, let fixed microorganism carrier be in quick condition, prevent to form microbial film and stop up.Staggered support is settled on aeration tube top, is used to place hollow grid reaction box 4, and hollow grid reaction box 4 staggers each other, is full of whole pond body.The quantity of hollow grid reaction box 4 is adjusted according to pond body size with big I.Whole pond body is made up of the dozens of bio-reactor that floats, and in each reactor drum, can form anaerobism, anoxic, aerobic microenvironment according to the pore structure of carrier; Be beneficial to the carrying out of synchronous nitration and anti-nitration reaction, and the load of microorganisms amount is big, fixed microorganism carrier is in quick condition; Mikrobe upgrades fast; Biochemical reaction efficient is high, and immobilized microorganism has been improved tolerance greatly, improves treatment effect greatly.Whole pond body structure is simple, and maintenance and change conveniently only needs with crane reaction box to be taken out in the pond and get final product, can directly place in the pond after replacing finishes, and is easy to maintenance, can be applicable to the transformation of traditional biochemistry pool body especially, the raising treatment effect.
When using in the patent of the present invention, municipal effluent gets into pond body 1 continuously by water inlet pipe 2, the limit water inlet, and the limit aeration, thus organic pollutant is decomposed by microbiological oxidation, simultaneously, the ammonia nitrogen in the sewage also is converted into nitric nitrogen through the nitrification of mikrobe.After stopping aeration, continue water inlet, mikrobe utilizes that remaining dissolved oxygen carries out oxygenolysis in the water, and along with the reduction of dissolved oxygen content, good oxygen condition transforms to anoxic gradually, and certain denitrification takes place.Because mikrobe is immobilized,, still can obtain good sedimentation effect even therefore do not stop into water in this stage.After precipitate phase is accomplished, open rising pipe 3 and discharge supernatant.After finishing, draining can get into the process of next cycle repeats.
When immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant carried out real life WWT running, test-results showed, is 368mg/L, NH for COD 4 +-N is that 65mg/L, TN are that 92mg/L, SS are that 365mg/L, total phosphorus are the sewage of 5.8mg/L, and the whole biochemical reaction time is 6.0-8.0h, and reactor drum water outlet COD is 35mg/L, NH 4 +-N be 0.11mg/L, SS be 16.0mg/L, TN be 11mg/L, total phosphorus be 0.45mg/L, COD clearance amount to can reach 90%, NH 4 +-N is 99.8%, SS is 95%, and total phosphorus is 92%, and last effluent quality reaches " urban wastewater treatment firm pollutant emission standard " GB18918-2002 one-level A standard fully.

Claims (10)

1. immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant; Include pond body (1); On described pond body (1) one end, be provided with water inlet pipe (2), body (1) the other end is provided with rising pipe (3) in described pond, in described pond body (1), is provided with hollow grid reaction box (4); In described hollow grid reaction box (4), be provided with fixed microorganism carrier (5), on described pond body (1) bottom, be provided with aerating apparatus (6).
2. a kind of immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant according to claim 1; It is characterized in that described hollow grid reaction box (4) includes many waffle slabs (41); Described waffle slab connects to form a casing (42) successively; On described casing (42), be hinged with a loam cake, in described casing (42), be provided with accommodation space, described fixed microorganism carrier (5) is arranged in the described accommodation space.
3. a kind of immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant according to claim 2 is characterized in that described waffle slab (41) has a plurality of crisscross ribs (43) to form, and mesh is 1.0-2.0cm.
4. according to described any immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant of claim 1 to 3, it is characterized in that described fixed microorganism carrier (5) is the macroporous netlike carrier.
5. according to any immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant described in the claim 1 to 3, it is characterized in that said fixed microorganism carrier (5) is 30-50% at the filling ratio of hollow grid reaction box (4).
6. a kind of immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant according to claim 1; It is characterized in that described aerating apparatus (6) includes the aerated conduit that is arranged in the body bottom, pond, is provided with several aeration heads (61) on described aerated conduit.
7. a kind of immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant according to claim 6 is characterized in that described aeration head (61) is aeration mouth or aeration tube.
8. a kind of immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant according to claim 4 is characterized in that described macroporous netlike carrier is a nanocomposite polyurethane foams.
9. a kind of immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant according to claim 8 is characterized in that described nanocomposite polyurethane foams is a square, and size is 8.0cm 3-27.0cm 3The density of described nanocomposite polyurethane foams is 12.0m 3/ kg-24.0m 3/ kg, percentage of open area are 90%-96%.
10. a kind of immobilized microorganism CASS synchronous denitrification dephosphorizing waste disposal plant according to claim 3 is characterized in that described rib (43) processed by hard polyethylene or acrylic plastering.
CN201210119729.1A 2012-04-21 2012-04-21 Synchronous denitrification and dephosphorization sewage treatment device for immobilized microorganism CASS (cyclic activated sludge system) Expired - Fee Related CN102659282B (en)

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Cited By (10)

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CN103011391A (en) * 2012-12-03 2013-04-03 北京清大国华环保科技有限公司 MBR (Membrane Bioreactor) method and device for microbial immobilization
CN104085993A (en) * 2014-08-01 2014-10-08 袁珩 Artificial wetland device
CN104085992A (en) * 2014-08-01 2014-10-08 袁珩 Wastewater treatment process with solar energy heat preservation effect
CN104098186A (en) * 2014-08-01 2014-10-15 安庆庆荣企业管理咨询有限责任公司 Immobilized microorganism waste water treatment process
CN104478078A (en) * 2014-12-09 2015-04-01 符惠 Immobilized microbial tank for aeration
CN104556365A (en) * 2014-12-25 2015-04-29 桑德集团有限公司 Efficient ammonia-nitrogen removal transformation method of CASS pools
CN104724817A (en) * 2015-03-31 2015-06-24 北京三泰正方生物环境科技发展有限公司 Net cage type biological carrier, immobilized microbiological treatment sewage device and application of immobilized microbiological treatment sewage device
CN105016464A (en) * 2014-04-30 2015-11-04 北京科净源科技股份有限公司 Biological stuffing for denitrification
CN105016478A (en) * 2014-04-30 2015-11-04 北京科净源科技股份有限公司 Sewage treatment system for denitrification through biological stuffing and installation method of sewage treatment system
CN105731652A (en) * 2016-02-19 2016-07-06 厦门南卡环境治理有限公司 Sludge reduction system

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CN1508081A (en) * 2002-12-16 2004-06-30 中国石油化工股份有限公司 Biological filler and preparing method and apparatus constructed thereof and use
CN201406362Y (en) * 2009-05-26 2010-02-17 北京理工大学 Immobilized aerobic-anaerobic device for degrading toxic organisms
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CN2603079Y (en) * 2003-06-11 2004-02-11 长春工程学院 Micropressure internal circulation active mud and waste water treatment device
CN201406362Y (en) * 2009-05-26 2010-02-17 北京理工大学 Immobilized aerobic-anaerobic device for degrading toxic organisms
CN102190368A (en) * 2010-07-15 2011-09-21 浙江浙大海元环境科技有限公司 Polyurethane porous suspended carrier containing attapulgite

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103011391A (en) * 2012-12-03 2013-04-03 北京清大国华环保科技有限公司 MBR (Membrane Bioreactor) method and device for microbial immobilization
CN103011391B (en) * 2012-12-03 2017-02-15 北京清大国华环境股份有限公司 MBR (Membrane Bioreactor) method and device for microbial immobilization
CN105016478A (en) * 2014-04-30 2015-11-04 北京科净源科技股份有限公司 Sewage treatment system for denitrification through biological stuffing and installation method of sewage treatment system
CN105016464A (en) * 2014-04-30 2015-11-04 北京科净源科技股份有限公司 Biological stuffing for denitrification
CN104098186A (en) * 2014-08-01 2014-10-15 安庆庆荣企业管理咨询有限责任公司 Immobilized microorganism waste water treatment process
CN104085993B (en) * 2014-08-01 2015-12-09 新昌县澄潭镇澄设机械厂 A kind of constructed wetland device
CN104085993A (en) * 2014-08-01 2014-10-08 袁珩 Artificial wetland device
CN104085992A (en) * 2014-08-01 2014-10-08 袁珩 Wastewater treatment process with solar energy heat preservation effect
CN104085992B (en) * 2014-08-01 2015-12-02 新昌县镜岭镇柳良轴承厂 A kind of sewage treatment process with warming solar energy effect
CN104478078A (en) * 2014-12-09 2015-04-01 符惠 Immobilized microbial tank for aeration
CN104556365A (en) * 2014-12-25 2015-04-29 桑德集团有限公司 Efficient ammonia-nitrogen removal transformation method of CASS pools
CN104724817A (en) * 2015-03-31 2015-06-24 北京三泰正方生物环境科技发展有限公司 Net cage type biological carrier, immobilized microbiological treatment sewage device and application of immobilized microbiological treatment sewage device
CN105731652A (en) * 2016-02-19 2016-07-06 厦门南卡环境治理有限公司 Sludge reduction system

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