CN201334415Y

CN201334415Y - Airlift aeration wastewater treatment device of integrated circulatory biological reactor

Info

Publication number: CN201334415Y
Application number: CNU2008202059315U
Authority: CN
Inventors: 李德豪; 殷旭东; 朱越平; 谢文玉; 钟华文
Original assignee: MAOMING COLLEGE
Current assignee: MAOMING COLLEGE
Priority date: 2008-12-20
Filing date: 2008-12-20
Publication date: 2009-10-28
Anticipated expiration: 2018-12-20

Abstract

An airlift aeration wastewater treatment device of an integrated circulatory biological reactor adopts the structure that an aerobic area (5), an anoxic area (2), a mixing area (9) and a sedimentation tank (10) with a characteristic of wastewater circulation are formed in an O-shaped exterior wall (1); the sedimentation tank (10) corresponding to the exterior wall (1) in shape is positioned at the middle part in the exterior wall (1); a C-shaped partition wall (3) is arranged between one side of the sedimentation tank (10) and the exterior wall (1); the area formed between the C-shaped partition wall (3) and the exterior wall (1) is the anoxic area (2); the area formed between the C-shaped partition wall (3) and the sedimentation tank (10) is the aerobic area (5); and the area formed between the other side of the sedimentation tank (10) and the exterior wall (1) is the mixing area (9). The utility model has the advantages of compact structure, convenient operation, control and maintenance, less required labor, and easy realized remote automatic control.

Description

The integrated circulating biological reactor of air lift type aeration wastewater treatment equipment

Technical field

The utility model relates to the integrated circulating biological reactor of a kind of air lift type aeration wastewater treatment equipment.

Background technology

In the present integrated biochemical processing, with the research of oxidation ditch and sequencing batch reactor (SBR) and most widely used, wherein SBR is a batch reactor, and the continous way bio-reactor is then based on integrated oxidation ditch.The oxidation ditch sewage disposal technology is the twentieth century exploitation fifties, mainly is made up of oxidation ditch, second pond and mud return-flow system, and it is a kind of form of activated sludge treatment method.The device that utilizes the oxidation ditch treatment technology at first is Paasche Wei Er (Pasveer) oxidation ditch device, after this develops various multi-form oxidation ditch devices again, as Caro plug (Carrousel) oxidation ditch device, and opel (Orbal) oxidation ditch device etc.The common feature of these oxidation ditch devices is: oxidation ditch is the plane enclosed irrigation canals and ditches that circulate, and uses a kind of aeration and agitator with direction control to promote mixed solution (sewage and active sludge are formed) along continuous straight runs and circulate continuously in the closed type channel; The residence time of sewage and microorganism is long, and the load of organic pollutant is low; Oxidation ditch can stably reach effective removal of organism and total suspended solid by the operation and maintenance of low limit.Settling tank and oxidation ditch branch are built, and by sludge pump precipitating sludge are back in the oxidation ditch.Its main drawback is that the depth of water is 1～3 meter usually because the ability of aerator is limit, and the degree of depth of oxidation ditch is more shallow, and floor space is big.Therefore, be restricted in land resources country use in short supply.Later 1980s, the U.S. has developed a kind of oxidation ditch sewage treatment---integrated oxidation ditch (Integraloxidation Ditch is called for short IDO).It is that a kind of sewage aeration with conventional oxidation ditch device purifies and the precipitation of mixed solution-separates merge into a single whole (settling tank is set directly in the oxidation ditch raceway groove), flows with the no blowback of realization mud.The used method of this method and conventional oxidation ditch device is compared, and has saved the mud return-flow system.Its shortcoming is: second pond is built in the recirculation channel, has increased flow resistance, to having relatively high expectations of aerator.The operation adjusting function is poor.Remove settling tank is combined to the reactor China and foreign countries, do not have other structures of change substantially, therefore still have the excessive problem of floor space.

Summary of the invention

The purpose of this utility model provides the integrated circulating biological reactor of the air lift type aeration wastewater treatment equipment that a kind of each functional zone subregion is obvious, floor space is relatively little and running cost is lower.

To achieve the above object, the technical solution adopted in the utility model is:

The integrated circulating biological reactor of a kind of air lift type aeration wastewater treatment equipment, the exterior wall the inside of O type is formed with waste water round-robin aerobic zone, the oxygen-starved area, mixing zone and settling tank, settling tank shape and exterior wall are corresponding, place exterior wall the inside medium position, C type partition wall is arranged between one side of settling tank and the exterior wall, wherein the zone that forms between C type partition wall and the exterior wall is the oxygen-starved area, and the zone that forms between the settling tank is an aerobic zone, the zone that forms between the opposite side of settling tank and exterior wall is the mixing zone, the overcurrent wall is wherein arranged in the aerobic zone, form meniscate aerobic aeration district between overcurrent wall and the C type partition wall, the bottom is laid with the aeration tube of air lift type aeration, and the zone that forms between the settling tank is the overcurrent district, the aerobic overcurrent district in the same side, the inlet of oxygen-starved area is separately installed with the stirring impeller.

Described settling tank is being supported built on stilts near aerobic zone one side by pillar stiffener.

This settling tank is positioned under one side direction of mixing zone and is extended with the partition wall that links to each other with the exterior wall base plate, and there is an inclined-plane that extends inwards the partition wall inboard.

Described settling tank bottom is the awl bucket that is arranged in parallel, and the awl bucket is for falling platform-type structure.

The utlity model has following advantage:

1. compact construction of the present utility model, succinct, operation is very easy with maintenance, and required labor force is few, and is easy to realize remote auto control.

2. settling tank of the present utility model is installed in the aerobic zone, rounded laying, need not the outer second pond of building, the platform-type structure of falling of bucket is bored in the settling tank bottom, can effectively alleviate and reduce the turbulent flow influence of bottom flow settling tank, simultaneously because the negative pressure that bottom flow produces in flowing can realize from refluxing mud, floor space and working cost have been reduced, and help keeping the dissolved oxygen of water outlet, guarantee effluent quality, can reduce the turbulence effect of aeration, also can reduce the resistance of fluid flow settling tank.

3. in the aerobic zone of the present utility model the overcurrent wall is arranged, aerobic zone is divided into aerobic overcurrent district and aerobic aeration zone, can reduce the resistance of aerobic zone aeration fluid flow.

4. aerobic and anoxic of the present utility model, functional zone subregions such as mixing are clear and definite, and control helps finishing synchronously organic removal and biological denitrificaion easily.At aerobic zone, mixed solution has been an oxygen condition, effectively degradation of organic substances and ammonia nitrogen is oxidized to nitric nitrogen and nitrite nitrogen.Being anoxic condition in the oxygen-starved area, is carbon source with the organism, under the effect of denitrifying bacteria nitric nitrogen and nitrite nitrogen is reduced to nitrogen and removes from water.

5. the utility model helps mixed solution repeatedly circulation between aerobic-anoxic-mixing zone, and refluxes automatically and realize the denitrogenation purpose.

Description of drawings

Fig. 1 is a floor map of the present utility model;

Fig. 2 is a diagrammatic cross-section of the present utility model.

Embodiment

See figures.1.and.2, the integrated circulating biological reactor of a kind of air lift type aeration wastewater treatment equipment, exterior wall 1 the inside of O type is formed with waste water round-robin aerobic zone 5, oxygen-starved area 2, mixing zone 9 and settling tank 10, settling tank 10 shapes are corresponding with exterior wall 1, place exterior wall 1 the inside medium position, C type partition wall 3 is arranged between one side of settling tank 10 and the exterior wall 1, wherein the zone that forms between C type partition wall 3 and the exterior wall 1 is oxygen-starved area 2, and the zone that forms between the settling tank 10 is an aerobic zone 5, the zone that forms between the opposite side of settling tank 10 and exterior wall 1 is mixing zone 9, wherein in the aerobic zone 5 overcurrent wall 6 is arranged, form meniscate aerobic aeration district between overcurrent wall 6 and the C type partition wall 3, the bottom is laid with the aeration tube of air lift type aeration, and the zone that forms between the settling tank 10 is the overcurrent district, the aerobic overcurrent district in the same side, the inlet of oxygen-starved area 2 is separately installed with and stirs impeller 7.

Described settling tank 10 is supporting built on stilts near aerobic zone 5 one sides by pillar stiffener 17, the window that links for settling tank 10 and aerobic zone 5 between the pillar stiffener 17, this settling tank 10 is positioned at and is extended with the partition wall 15 that links to each other with exterior wall base plate 14 under 9 one side direction of mixing zone, and there is an inclined-plane 16 that extends inwards partition wall 15 inboards, and the horizontal sextant angle on this inclined-plane 16 is 55～65 °.

Described settling tank 10 bottoms are the awl bucket 11 that is arranged in parallel, and awl bucket 11 is for falling platform-type structure, and the conical surface and the horizontal plane angle of awl bucket 11 are 60～75 °.

Water-in 8 is opened on

exterior wall

1,9 tops, corresponding mixing zone, and overflow weir 13 is arranged at settling tank 10 tops, has water outlet 12 on the overflow weir 13.

Principle of work of the present utility model is: sewage enters the mixing zone 9 that microbial population (active sludge) is housed by water-in 8, enters into oxygen-starved area 2 and aerobic overcurrent district under the promotion of stirring impeller 7.2 mixed solutions are anoxic condition in the oxygen-starved area, under the effect of denitrifying bacteria nitric nitrogen and nitrite nitrogen are reduced to nitrogen and remove from water; Denitrification is carbon source with the organism, as COD, therefore can simultaneously partial organic substances be removed in the aerobic aeration district and carry out the air lift type aeration by the aeration tube 4 that is installed in the bottom, make mixed solution be oxygen condition, carry out the nitration reaction of organic matter removal and ammonia nitrogen in aerobic overcurrent district, nitration product then is circulated to and carries out denitrification in the oxygen-starved area 2 and remove nitrogen.

A part of mixed solution enters settling tank 10 by the awl bucket 11 of settling tank 10 bottoms in aerobic overcurrent district simultaneously, absorption at the sludge suspension layer, carry out solid-liquid separation under the action of gravity of collision and active sludge self, mixed solution is after solid-liquid separation, discharge by water outlet 12 through overflow weir 13 with the supernatant liquor of water inlet equivalent, mud is then under the drive of self gravitation and settling tank 10 bottom streaming fluids, certainly be back in the aerobic overcurrent district by awl bucket 11, and with mixed solution under the promotion of stirring impeller 7 in this device the aerobic-anoxic-blended of realization repeatedly circulate, sewage is purified.

Claims

1, the integrated circulating biological reactor of a kind of air lift type aeration wastewater treatment equipment, exterior wall [1] the inside that it is characterized in that the O type is formed with waste water round-robin aerobic zone [5], oxygen-starved area [2], mixing zone [9] and settling tank [10], settling tank [10] shape is corresponding with exterior wall [1], place exterior wall [1] the inside medium position, between one side of settling tank [10] and the exterior wall [1] C type partition wall [3] is arranged, wherein the zone that forms between C type partition wall [3] and the exterior wall [1] is oxygen-starved area [2], and the zone that forms between the settling tank [10] is aerobic zone [5], the zone that forms between the opposite side of settling tank [10] and exterior wall [1] is mixing zone [9], wherein in the aerobic zone [5] overcurrent wall [6] is arranged, form meniscate aerobic aeration district between overcurrent wall [6] and the C type partition wall [3], the bottom is laid with the aeration tube of air lift type aeration, and the zone that forms between the settling tank [10] is the overcurrent district, the aerobic overcurrent district in the same side, the inlet of oxygen-starved area [2] is separately installed with and stirs impeller [7].

2, the integrated circulating biological reactor of air lift type aeration according to claim 1 wastewater treatment equipment is characterized in that described settling tank [10] is being supported built on stilts near aerobic zone [5] one sides by pillar stiffener [17].

3, the integrated circulating biological reactor of air lift type aeration according to claim 2 wastewater treatment equipment, it is characterized in that this settling tank [10] is positioned at is extended with the partition wall [15] that links to each other with exterior wall base plate [14] under [9] one side direction of mixing zone, and there is an inclined-plane [16] that extends inwards partition wall [15] inboard.

4, the integrated circulating biological reactor of air lift type aeration according to claim 3 wastewater treatment equipment, the horizontal sextant angle that it is characterized in that this inclined-plane [16] is 55～65 °.

5, the integrated circulating biological reactor of air lift type aeration according to claim 2 wastewater treatment equipment is characterized in that described settling tank [10] bottom is the awl bucket [11] that is arranged in parallel, and awl bucket [11] is for falling platform-type structure.

6, the integrated circulating biological reactor of air lift type aeration according to claim 5 wastewater treatment equipment is characterized in that the conical surface and the horizontal plane angle of awl bucket [11] is 60～75 °.