CN201334398Y

CN201334398Y - Airlift type integrated circulatory wastewater treatment device for biological reactor

Info

Publication number: CN201334398Y
Application number: CNU200820206862XU
Authority: CN
Inventors: 李德豪; 谢文玉; 殷旭东; 钟华文; 朱越平
Original assignee: MAOMING COLLEGE
Current assignee: MAOMING COLLEGE
Priority date: 2008-12-31
Filing date: 2008-12-31
Publication date: 2009-10-28
Anticipated expiration: 2018-12-31

Abstract

An airlift type integrated circulatory wastewater treatment device for a biological reactor adopts the structure that a sedimentation tank (10) is arranged in the middle position of a D-type external wall (1); the shapes of the D-type external wall (1) and the sedimentation tank (10) are the same, and the parts with corresponding shapes of the D-type external wall (1) and the sedimentation tank (10) are placed correspondingly; a C-type partition wall (3) is arranged between the arc-shaped surface side of the sedimentation tank (10) and the external wall (1); an anoxic zone is formed between the C-type partition wall (3) and the external wall (1); an aerobic zone (5) is formed between the C-type partition wall (3) and the sedimentation tank (10); a mixing zone (9) is formed between the other side of the plane surface of the sedimentation tank (10) and the external wall (1); an overhead overflow wall (6), of which the upper end is in the same level of the horizontal plane, is arranged in the aerobic zone (5); an aerobic overflow zone is formed between the overflow wall (6) and the sedimentation tank (10); an aerobic aeration zone is formed between the overflow wall (6) and C-type partition wall (3); aeration pipes (4) aerating in the airlift type are distributed and arranged at the bottom of the aerobic aeration zone; and agitation impellers (7) are mounted at the inlets of the aerobic overflow zone and the anoxic zone (2) which are on the same side. The utility model has the advantages of compact and simple structure, very simple and convenient operation and maintenance, low labor requirement, and easy realization of remote automatic control.

Description

The integrated circulating biological reactor of air lift type waste disposal plant

Technical field

The utility model relates to the integrated circulating biological reactor of a kind of air lift type waste disposal plant.

Background technology

Integrated oxidation ditch claims Round Sump oxidation ditch (combined oxidation ditch) again, the aeration purification operates in the same structures with solid-liquid separation and finishes, need not to build independent second pond, mud refluxes automatically, can be applicable in the fairly large sewage treatment project.Integrated oxidation ditch is taught in 1954 by Pasveer the earliest and is succeeded in developing at Dutch Voorschoten, and the scale development research starts from the eighties in 20th century, and the U.S. is referred to as ICC (interchannel clarifier) type oxidation ditch.Its principal feature has: (1) does not establish preliminary sedimentation tank and independent second pond, and flow process is short and occupation of land is few, and construction and working cost are low, simple and convenient management; (2) mud refluxes automatically and refluxes in time, the few and stable in properties of surplus sludge volume; (3) capacity of resisting impact load is strong, and is nitrated obvious with denitrogenation, and certain phosphor-removing effect is arranged; (4) settling vessel can produce to a certain degree disadvantageous effect to the hydraulics of tap drain, as increase head loss, mud reflux insufficient etc., thereby have influence on the bulk treatment effect of oxidation ditch.The integrated oxidation ditch technological development has obtained developing rapidly so far, places the position of oxidation ditch to distinguish according to settling vessel and can be summarized as 3 classes: formula, lateral sulcus formula and central island formula integrated oxidation ditch in the ditch.But have following unfavorable factor: (1) tap drain current pass through from the base assemblies of solid-liquid separator, and the fluidised form complexity can have a negative impact to solid-liquid separation and mud backflow; (2) settling vessel is bigger to tap drain hydraulics influence, and head loss increases, and the mixing promotion ability of aerator is had higher requirements.

Summary of the invention

The purpose of this utility model provide a kind of each functional zone subregion obviously, floor space is less relatively and the integrated circulating biological reactor of air lift type that running cost is lower waste disposal plant.

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 waste disposal plant, the exterior wall the inside medium position that is the D type has shape identical, and the corresponding settling tank of placing of shape corresponding site, C type partition wall is arranged between settling tank arc one side and the exterior wall, 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 planar shaped and the exterior wall is the mixing zone, there are upper end and horizontal plane to maintain an equal level and built on stilts overcurrent wall in the aerobic zone, form aerobic overcurrent district between overcurrent wall and the settling tank, and form the aerobic aeration district between the C type partition wall, be laid with the aeration tube of air lift type aeration in bottom, aerobic aeration district, 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 overcurrent district 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, being D shape lays, 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. functional zone subregions such as aerobic, anoxic of the present utility model, mixing are clear and definite, and control helps finishing synchronously organic removal and biological denitrificaion easily.At aerobic zone, mixed solution has been oxygen condition, effectively degradation of organic substances and ammonia nitrogen is oxidized to nitric nitrogen (nitrate nitrogen and nitrite nitrogen).Being anoxic condition in the oxygen-starved area, is carbon source with the organism, under the effect of denitrifying bacteria is nitrogen and removing from water with nitrate-nitrogen reduction.

4. the utility model adopts unique air lift type mode aeration, and aerobic zone is divided into aerobic overcurrent district and aerobic aeration zone, can reduce the resistance of aeration fluid flow.

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 waste disposal plant, the exterior wall 1 the inside medium position of D type has shape identical, and the corresponding settling tank of placing 10 of shape corresponding site, between settling tank 10 arcs, one side and the exterior wall 1 C type partition wall 3 is arranged, partition wall 3 is close to base plate 14, the zone that forms between C type partition wall 3 and the exterior wall 1 is the oxygen-starved area, 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 planar shaped and the exterior wall 1 is mixing zone 9, there are upper end and horizontal plane to maintain an equal level and built on stilts overcurrent wall 6 in the aerobic zone 5, form aerobic overcurrent district between overcurrent wall 6 and the settling tank 10, and form the aerobic aeration district between the C type partition wall 3, be crescent, be laid with the aeration tube 4 of air lift type aeration in bottom, aerobic aeration district, 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 the window that settling tank 10 and aerobic overcurrent district link between the pillar stiffener 17 built on stilts by pillar stiffener 17 supports near aerobic overcurrent district one side.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 its conical surface and horizontal sextant angle are 60～75 °.

Water-in 8 is opened on

exterior wall

1,2 tops, corresponding oxygen-starved area, 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 oxygen-starved area 2 that microbial population (active sludge) is housed by water-in 8, is answering the microbial population of 2 ingress, oxygen-starved area in stirring under the promotion of impeller 7 with it to carry out thorough mixing.2 mixed solutions are anoxic condition in the oxygen-starved area, under the effect of denitrifying bacteria are nitrogen and removing from water with nitrate-nitrogen reduction; Denitrification is a carbon source with the organism, as COD, therefore can simultaneously partial organic substances be removed; Entering mixing zone 9 then mixes with mixed solution from aerobic overcurrent district.Then the inlet through aerobic overcurrent district and oxygen-starved area 2 enters aerobic overcurrent district and oxygen-starved area 2 respectively again, in the aerobic aeration district, carry out the air lift type aeration by the aeration tube 4 that is installed in the bottom along laying between C type partition wall 3 and the overcurrent wall 6, make mixed solution be oxygen condition, carry out the nitration reaction of organic matter removal and ammonia nitrogen in aerobic zone, 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 bottom streaming fluid, 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 waste disposal plant, exterior wall [1] the inside medium position that it is characterized in that the D type has shape identical, and the corresponding settling tank of placing [10] of shape corresponding site, between settling tank [10] arc one side and the exterior wall [1] C type partition wall [3] is arranged, the zone that forms between C type partition wall [3] and the exterior wall [1] is the oxygen-starved area, 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] planar shaped and the exterior wall [1] is mixing zone [9], there are upper end and horizontal plane to maintain an equal level and built on stilts overcurrent wall [6] in the aerobic zone [5], form aerobic overcurrent district between overcurrent wall [6] and the settling tank [10], and form the aerobic aeration district between the C type partition wall [3], be laid with the aeration tube [4] of air lift type aeration in bottom, aerobic aeration district, 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 according to claim 1 waste disposal plant is characterized in that the aerobic aeration district that forms between overcurrent wall [6] and the C type partition wall [3] is a crescent.

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

4, the integrated circulating biological reactor of air lift type according to claim 3 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.

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

6, the integrated circulating biological reactor of air lift type according to claim 3 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.

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