CN205874001U

CN205874001U - A two district's sedimentation tanks of radial flow formula for good oxygen granular sludge of continuous flow

Info

Publication number: CN205874001U
Application number: CN201620770406.2U
Authority: CN
Inventors: 李军; 陈涛; 倪永炯
Original assignee: Zhejiang University of Technology ZJUT
Current assignee: Zhejiang University of Technology ZJUT
Priority date: 2016-07-20
Filing date: 2016-07-20
Publication date: 2017-01-11
Anticipated expiration: 2026-07-20

Abstract

The utility model provides a two district's sedimentation tanks of the special radial flow formula of the good oxygen granular sludge of continuous flow, includes cell body, the system of intaking, drainage system, row's mud system and control system, the central downward sloping of cell body orientation to with cell body center division inner ring is regional and the outer loop is regional, regional II regions that are of inner ring, the regional I region that is of outer loop, the system of intaking includes cell body center water inlet well and inlet tube, the inlet tube communicates with cell body center water inlet well's lower part entry, arrange the mud system including two ji nijing establishing at the cell body center and two mud pipes of cell body center bottom, two jinijing correspond respectively and collect the regional mud of two cell bodies, and jinijing's bottom and mud pipe intercommunication, the regional mud pipe of I meet sludge tihckener, and the mud pipes in II regions meet sludge return pipe, drainage system includes cell body outside outlet and drain pipe, outlet and drain pipe intercommunication. The utility model discloses effectively distinguish mud, be favorable to the miniaturation of oxygen mud.

Description

Radial-flow two-region sedimentation tank for continuous-flow aerobic granular sludge

Technical field

This utility model belongs to sewage treatment area, especially a kind of radial-flow two-region sedimentation tank.

Background technology

Aerobic Granular Sludge Technology is a kind of New Wastewater Treatment Technology art, has good settling property, high sludge concentration, High organic loading, poisonous and harmful substance, impact load etc. can be born, just obtaining more concern in field of waste water treatment.Aerobic The formation mechenism of granule sludge is complicated, comprises physics, chemical and biological etc. interacts, and the process of generally forming is considered as one Fixed hydrodynamics, select pressure etc. under the conditions of, the organism clustering phenomena that microorganism self-retaining effect is formed.

Current research is substantially focused in intermittent activated sludge process (SBR) reactor cultivation aerobic particle mud, Sbr reactor device uses periodic running mode, and mud-water separation is carried out in same reactor.At present to real under continuum micromeehanics pattern The report of existing aerobic particle mud is also few, and sedimentation tank is as in continuous flow process important ingredient, to aerobic The formation of grain mud has the biggest effect.Precipitating sludge is unified collection and is processed by traditional width flow settling pond, does not has Distinguish mud so that the quality of returned sludge can not control very well, is unfavorable for the granulating of aerobic sludge.

Summary of the invention

Mud, unfavorable is not distinguished when collection processes in order to overcome existing width flow settling pond that precipitating sludge is unified In the granular deficiency of aerobic sludge, this utility model provides a kind of effective differentiation mud, is conducive to the granule of aerobic sludge The radial-flow two-region sedimentation tank for continuous-flow aerobic granular sludge changed.

This utility model solves its technical problem and be the technical scheme is that

A kind of radial-flow two-region sedimentation tank for continuous-flow aerobic granular sludge, including cell body, water inlet system, draining system System, sludge drainage system and control system, described cell body is downward-sloping towards center, and divides endocyclic area with outer with pool center Ring region territory, described endocyclic area is II region, and described outer region is I region；Described water inlet system includes that pool center enters Well and water inlet pipe, described water inlet pipe connects with the lower entrances of pool center inlet well；Described sludge drainage system includes being located at Two discharge pipelines bottom two mud-collecting wells of pool center and pool center, two described mud-collecting wells correspondence respectively collects two The mud in individual cell body region, the bottom of mud-collecting well connects with discharge pipeline, and the discharge pipeline in described I region connects sludge concentration tank, institute The discharge pipeline in II region stated connects mud return line；Described drainage system includes cell body outermost discharge outlet and drain pipe, institute State discharge outlet to connect with drain pipe.

Further, described sludge drainage system also includes two set mud discharging devices, and described mud discharging device includes being arranged on precipitation The rotary type truss on top, pond, it is arranged on the cleaning shoe bottom sedimentation tank and both connecting rods, described I region and II Region is respectively provided with a set of mud discharging device.

Technology of the present utility model is contemplated that: the feature of radical sedimentation basin mud-water separation is sludge settling region and mud Weight be inversely proportional to, i.e. weigh sludge settling near water inlet central area, light sludge settling away from water inlet central area；Aerobic The granulating of mud needs constantly to retain weight mud and discharge light mud, and dual zone type radical sedimentation basin can carry out mud Select, thus promote the cultivation of aerobic particle mud, can select the aerobic particle mud of shaping is reselected backflow simultaneously Return biochemistry pool, it is ensured that stablizing of aerobic particle mud system.

The utility model has the advantage of: precipitating sludge is effectively selected by (1)；(2) auxiliary promotes continuous flow mode Under aerobic sludge granulation, and keep stablizing of aerobic particle mud system；(3) implementing simply, transformation is easily.

Accompanying drawing explanation

Fig. 1 is the schematic top plan view of the radial-flow two-region sedimentation tank for continuous-flow aerobic granular sludge；

Fig. 2 is a generalized section of Fig. 1；

Fig. 3 is one, another direction generalized section of Fig. 1.

Detailed description of the invention

Below in conjunction with the accompanying drawings this utility model is further described.

With reference to Fig. 1～Fig. 3, a kind of radial-flow two-region sedimentation tank for continuous-flow aerobic granular sludge, including cell body, enter Water system, drainage system, sludge drainage system and control system, described cell body is downward-sloping towards center, and is separated into I, II Two regions；Described water inlet system is made up of pool center inlet well B and water inlet pipe 1, and pool center top intakes to cell body； Described sludge drainage system is by two be located at bottom two mud-collecting well C and D of pool center, two set mud discharging device, pool centers Discharge pipeline forms, and described mud-collecting well C is by interior cleaning shoe 8, inside connecting rod 10, interior rotary type truss 3 and attached dredging tube The mud in mud discharging device correspondence collecting pit body region II region formed, described blowoff chamber D passes through outer cleaning shoe 7, outer company The mud in mud discharging device correspondence collecting pit body region I region that extension bar 9, outer rotary type truss 2 and attached dredging tube are formed, Being respectively set to two set mud discharging devices according to described cell body region difference, the outer discharge pipeline 5 of described collection I region mud connects dirt Mud thickener, the interior discharge pipeline 4 of described collection II region mud connects mud return line；Described water inlet system and sludge drainage system Build jointly and be arranged in the middle of cell body；Described drainage system is made up of cell body outermost circle discharge outlet A and drain pipe 6.

Biochemistry pool muddy water mixed solution enters inlet well B through water inlet pipe 1, inlet well B top rotate to surrounding water distribution, truss Running, I region precipitating sludge enters sludge concentration tank after sludge drainage system is collected, and II region mud returns after sludge drainage system is collected Flowing to biochemistry pool, precipitation process terminates rear supernatant and discharges through drain pipe 6 from cell body top water outlet A.

According to the radical sedimentation basin for continuous-flow aerobic granular sludge of this utility model embodiment, effectively have chosen Weight mud, promotes the granulating of aerobic sludge in continuous flow mode, and makes aerobic particle mud stable in a long time.

Embodiment the most of the present utility model, it will be understood by those skilled in the art that: In the case of without departing from principle of the present utility model and objective, these embodiments can be carried out multiple change, revise, replace And modification, scope of the present utility model is limited by claim and equivalent thereof.

Result of the test: using with sodium acetate for organic human configuration sewage, COD is 1000mg/L, and ammonia nitrogen is 70mg/ L, seed sludge is the activated sludge of municipal sewage plant.By described continuous-flow aerobic granular sludge specially middle radial-flow type sedimentation Pond, as the precipitation unit of continuous flow reactor, is run 60 days, the aerobic particle mud particle diameter master in continuous flow reactor continuously Will be at more than 1mm, mud SVI₃₀At 30-60mL/TSS.

Claims

1. for a radial-flow two-region sedimentation tank for continuous-flow aerobic granular sludge, including cell body, water inlet system, draining system System, sludge drainage system and control system, it is characterised in that: described cell body is downward-sloping towards center, and divides with pool center Endocyclic area and outer region, described endocyclic area is II region, and described outer region is I region；Described water inlet system bag Including pool center inlet well and water inlet pipe, described water inlet pipe connects with the lower entrances of pool center inlet well；Described spoil disposal Two discharge pipelines bottom two mud-collecting wells that system includes being located at pool center and pool center, two described mud-collecting wells divide The not corresponding mud collecting two cell body regions, the bottom of mud-collecting well connects with discharge pipeline, and the discharge pipeline in described I region connects dirt Mud thickener, the discharge pipeline in II described region connects mud return line；Described drainage system includes cell body outermost discharge outlet And drain pipe, described discharge outlet connects with drain pipe.

2. the radial-flow two-region sedimentation tank for continuous-flow aerobic granular sludge as claimed in claim 1, it is characterised in that: institute The sludge drainage system stated also includes two set mud discharging devices, and described mud discharging device includes the rotary type purlin being arranged on sedimentation tank top Frame, being arranged on the cleaning shoe bottom sedimentation tank and both connecting rods, described I region and II region are respectively provided with a set of row Mud device.