CN201240941Y

CN201240941Y - Lateral ditch type integrated biological reaction waste water treatment apparatus

Info

Publication number: CN201240941Y
Application number: CNU2008200485869U
Authority: CN
Inventors: 李德豪; 凌洪吉; 谢文玉; 殷旭东; 钟华文; 廖艳
Original assignee: MAOMING COLLEGE
Current assignee: MAOMING COLLEGE
Priority date: 2008-05-26
Filing date: 2008-05-26
Publication date: 2009-05-20
Anticipated expiration: 2018-05-26

Abstract

Disclosed is a side ditch integrated biological reaction sewage treatment device; an anaerobic region [13], an aerobic region [5], an anoxic region [8] and a mixing region [6] are respectively arranged in an O-shaped outer wall [1]; wherein, the aerobic region [5] is the region which is formed between the outer wall [1] and a separating wall [3]; the anoxic region [8] is the region which is formed between the separating wall [3] and an O-shaped inner wall [2] which is positioned in the middle part; the mixing region [6] is the region which is positioned between the outer wall [1] and the inner wall [2] and is far away from the aerobic region [5]; an aeration pipe [4] is arranged at the bottom part of the aerobic region [5]; a stirring flow pushing device [7] is respectively arranged at the inlets of the aerobic region [5] and the anoxic region [8] which are positioned at the same side and in the anaerobic region [13]; and a sedimentation tank [9] is arranged at the other side of the aerobic region [5]. The device has the advantages that the structure is compact and simple, each function region is divided clearly, the occupied area is relatively small, and the operation cost are reduced.

Description

Lateral sulcus formula integral biological reaction waste treatment unit

Technical field

The utility model relates to lateral sulcus formula integral biological reaction waste treatment unit.

Background technology

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.The energy-conservation part of Round Sump integrative oxidation ditch process is successfully to have realized that solid-liquid separation and no pump mud reflux automatically, has realized the waterpower internal reflux simultaneously, thereby has save twice machinery return-flow system.The operational management pattern of the reasonable disposition of equipment and optimization also is to realize energy-conservation a kind of important means.This technology has good prospect for promotion and application because of its huge power savings advantages and technical characterstic in the waste water control of small and medium-sized cities.

Summary of the invention

The purpose of this utility model provides the lateral sulcus formula integral biological reaction waste treatment unit 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:

A kind of lateral sulcus formula integral biological reaction waste treatment unit, the exterior wall the inside of O type is formed with anaerobic zone, aerobic zone, oxygen-starved area and mixing zone, wherein the zone that forms between the partition wall of exterior wall and C type is that aerobic zone, partition wall and the zone that forms between the interior wall of the O of medium position type are the oxygen-starved area, between exterior wall and interior wall, away from the zone of aerobic zone is the mixing zone, the aerobic zone bottom is equipped with aeration tube, be positioned at the aerobic zone of the same side, the inlet and the anaerobic zone of oxygen-starved area is separately installed with the stirring impeller, the opposite side of aerobic zone is provided with settling tank.

Described settling tank is supported built on stilts by pillar stiffener.

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

The lateral of this settling tank is extended the inclined-plane that links to each other and form to tilt inwards with the exterior wall base plate down.

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 a side of O type device, 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 makes mud can realize having reduced floor space and working cost, and having helped keeping the dissolved oxygen of water outlet from refluxing, guarantee effluent quality, also can reduce the resistance of fluid flow.

3. anaerobism of the present utility model, aerobic and anoxic, functional zone subregions such as mixing are clear and definite, and control helps finishing synchronously organic removal and biological carbon and phosphorous removal easily.At aerobic zone, mixed solution has been an oxygen condition, degradation of organic substances and ammonia nitrogen is oxidized to nitric nitrogen (nitrate nitrogen and nitrite nitrogen) effectively, and carry out biology and inhale phosphorus.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.Anaerobic zone can degrade quite a few COD and organism also can carry out biology and release phosphorus.

4. the utility model helps mixed solution repeatedly circulation between aerobic-anoxic-mixing zone, and refluxes automatically and realize denitrogenation, reaches the biological phosphate-eliminating purpose by the discharging excess sludge.

Description of drawings

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

Fig. 2 is the utility model device diagrammatic cross-section.

Embodiment

See figures.1.and.2, a kind of lateral sulcus formula integral biological reaction waste treatment unit, the exterior wall of O type [1] the inside is formed with anaerobic zone [13], aerobic zone [5], oxygen-starved area [8] and mixing zone [6], the zone that wherein is arranged at O type interior wall [2] the inside formation of exterior wall [1] the inside medium position is anaerobic zone [13], the zone that forms between the partition wall [3] of exterior wall [1] and C type is aerobic zone [5], partition wall [3] and to be positioned at the zone that forms between the interior wall [2] of medium position be oxygen-starved area [8], between exterior wall [1] and interior wall [2], zone away from aerobic zone [5] is mixing zone [6], aerobic zone [5] bottom is equipped with aeration tube [4], be positioned at the aerobic zone [5] of the same side, the inlet of oxygen-starved area [8] and anaerobic zone [13] are separately installed with and stir impeller [7], and the opposite side of aerobic zone [5] is equipped with settling tank [9].

Described settling tank [9] is supported built on stilts by pillar stiffener [14], described settling tank [9] bottom is the awl bucket [10] that is arranged in parallel, and awl bucket [10] is for falling platform-type structure, and its conical surface and horizontal plane angle are 60～75 °.The lateral of this settling tank [9] is extended the inclined-plane [15] that links to each other and form to tilt inwards with exterior wall base plate [16] down, and the horizontal sextant angle of this inclined-plane [15] is 60～70 °.

The mouth of a river [17] excessively of the anaerobic zone [13] in the interior wall [2] are positioned at the ingress of oxygen-starved area [8], and overflow weir [11] is arranged at settling tank [9] top, has water outlet [12] on the overflow weir [11].

Principle of work of the present utility model is: sewage is entered by the bottom of the anaerobic zone [13] in the interior wall [2], enters into ingress, oxygen-starved area [8] by crossing the mouth of a river [13].The promotion of stirring impeller [7] in ingress, oxygen-starved area [8] down and the microbial population in it carry out thorough mixing.[8] mixed solution is anoxic condition in the oxygen-starved area, under the effect of denitrifying bacteria is 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 [6] then mixes with mixed solution from oxygen-starved area [8], aerobic zone [5].Thereafter a part enters aerobic zone [5] through aerobic zone [5] inlet, in aerobic zone [9] by be installed in the bottom along partition wall [3] and exterior wall [1] and between the aeration tube [4] of laying carry out aeration, make mixed solution be oxygen condition, in aerobic zone [5], carry out the nitration reaction of organic matter removal, ammonia nitrogen and carry out biology suction phosphorus,, nitration product then is circulated to and carries out denitrification in the oxygen-starved area [8] and remove nitrogen.

Part mixed solution enters settling tank [9] by the awl bucket [10] of settling tank [9] bottom, 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 [11] 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 exterior wall [1] by awl bucket [10], settling tank part mud is back in the interior wall [2] in addition, mixed solution realizes in this device under the promotion of stirring impeller [7] that together aerobic-anoxic blended repeatedly circulates, and sewage is purified.Settling tank [10] sedimentation part mud is back to anaerobic zone [13], and carries out biology and release phosphorus, reaches the purpose of dephosphorization by the discharging excess sludge.

Claims

1, a kind of lateral sulcus formula integral biological reaction waste treatment unit, exterior wall [1] the inside that it is characterized in that the O type is formed with anaerobic zone [13], aerobic zone [5], oxygen-starved area [8] and mixing zone [6], wherein the zone that forms between the partition wall [3] of exterior wall [1] and C type is aerobic zone [5], partition wall [3] and to be positioned at the zone that forms between the interior wall [2] of O type of medium position be oxygen-starved area [8], between exterior wall [1] and interior wall [2], zone away from aerobic zone [5] is mixing zone [6], aerobic zone [5] bottom is equipped with aeration tube [4], be positioned at the aerobic zone [5] of the same side, the inlet of oxygen-starved area [8] and anaerobic zone [13] are separately installed with and stir impeller [7], and the opposite side of aerobic zone [5] is provided with settling tank [9].

2, lateral sulcus formula integral biological reaction waste treatment unit according to claim 1, it is built on stilts to it is characterized in that described settling tank [9] is supported by pillar stiffener [14].

3, lateral sulcus formula integral biological reaction waste treatment unit according to claim 1 and 2 is characterized in that described settling tank [9] bottom is the awl bucket [10] that is arranged in parallel, and awl bucket [10] is for falling platform-type structure.

4, lateral sulcus formula integral biological reaction waste treatment unit according to claim 3 is characterized in that the conical surface and the horizontal plane angle of awl bucket [10] is 60～75 °.

5, lateral sulcus formula integral biological reaction waste treatment unit according to claim 3 is characterized in that the lateral of this settling tank [9] is extended the inclined-plane [15] that links to each other and form to tilt inwards with exterior wall base plate [16] down.

6, lateral sulcus formula integral biological reaction waste treatment unit according to claim 5, the horizontal sextant angle that it is characterized in that this inclined-plane [15] is 60～70 °.