CN100560516C

CN100560516C - Energy-conservation combined building aeration sedimentation tank

Info

Publication number: CN100560516C
Application number: CNB2007100247983A
Authority: CN
Inventors: 凌建军; 王顺才; 蒋爱亚
Original assignee: WUXI LIANCHUANG MUNICIPAL ENGINEERING Co Ltd
Current assignee: WUXI LIANCHUANG MUNICIPAL ENGINEERING Co Ltd
Priority date: 2007-06-25
Filing date: 2007-06-25
Publication date: 2009-11-18
Anticipated expiration: 2027-06-25
Also published as: CN101113058A

Abstract

Energy-conservation combined building aeration sedimentation tank, relate to water-treatment technology field, comprise rectangle aeration tank, rectangle settling tank and connecting tube, the rectangle settling tank places the rectangle aeration tank, be communicated with by the water distribution partition wall between rectangle settling tank and rectangle aeration tank, the rectangle aeration tank is by dividing plate zoning territory, but because of each zone and rectangle settling tank shared portion wall, make the floor space of entire equipment little, cost of investment is low, aeration efficient height, particularly water inlet inserts oxygen-starved area, anaerobic zone, aerobic zone, settling region formation water cycle successively, has improved denitrogenation dephosphorizing efficient.

Description

Energy-conservation combined building aeration sedimentation tank

Technical field

The present invention relates to water-treatment technology field, refer in particular to a kind of energy-conservation combined building aeration sedimentation tank that the rectangle settling tank is placed the rectangle aeration tank.

Background technology

In the existing water treating equipment, aeration tank and settling tank are independent usually to be provided with, and both are by pipe connection, on the one hand, equipment is scrappy, and structure is not compact, and floor space is big, on the other hand, aeration tank and settling tank need separately be built the pond body by laying bricks or stones, lay the longer pipe road and connect, and cost of investment is big relatively.On treatment process, the general A that adopts routine ²/ O technology, there are following three shortcomings in it: 1. because anaerobic zone ranks forefront, the nitrate in the returned sluge has a negative impact to anaerobic zone; 2. because anoxic is positioned at the system middle part, denitrification is mixed at the carbon source branch and is occupy minus advantage, thereby has influenced the denitrification effect of system; 3. owing to there is internal recycle, actually in the excess sludge that the common process system is discharged have only a small part to experience complete to put phosphorus, inhale the phosphorus process, all the other then do not experience anaerobic state basically and directly enter aerobic zone by the oxygen-starved area, and this is disadvantageous to system's dephosphorization.

Summary of the invention

The present invention is just in order to overcome above-mentioned deficiency, a kind of aeration and Round Sump pond body that is deposited in one of collecting is provided, saved cost of investment, reduced floor space, and can improve aeration efficient, the main improvement is the rectangle settling tank is placed the rectangle aeration tank, and also available shared wall reduces investment.Specifically implement like this: energy-conservation combined building aeration sedimentation tank, comprise rectangle aeration tank, rectangle settling tank and connecting tube, the rectangle settling tank places the rectangle aeration tank, be communicated with by the water distribution partition wall between rectangle settling tank and rectangle aeration tank, it is characterized in that being provided with dividing plate between rectangle aeration pool wall and rectangle precipitation pool wall, described dividing plate is separated into several zones to the rectangle aeration tank.

Settling tank can be preliminary sedimentation tank or second pond or final deposition pool, and can establish one, two or more settling tank formation in parallel.

The rectangle aeration tank can be a square or rectangular, is provided with dividing plate between rectangle aeration pool wall and rectangle precipitation pool wall, and its rectangle aeration tank is separated into several zones.One or more of anaerobic pond, anoxic pond, Aerobic Pond, equalizing tank, hydrolysis acidification pool can be arranged in these zones, to satisfy the requirement of different operating modes.Because when this design can make rectangle settling tank and rectangle aeration tank shared portion wall, can reduce cost of investment to greatest extent, and the precipitation pool wall in the aeration tank, can play impact effect to current, help improving aeration efficient.

For avoiding and traditional A ²/ O technology returned sluge nitrate discharges the influence of phosphorus to anaerobic pond, the present invention adopts a kind of new carbon source distribution means, be about to anoxic pond and place the anaerobic pond front, returned sluge, water inlet and mixed-liquor return from second pond all enter the anoxic section, returned sluge and mixed solution carry out denitrification in anoxic pond, remove nitric nitrogen, enter the anaerobism section again, guaranteed the anaerobic state of anaerobic pond, the reinforced phosphor-removing effect.In the design of pond body, dividing plate is separated at least three zones with the rectangle aeration tank, is made as oxygen-starved area, anaerobic zone, aerobic zone that order water is communicated with successively, and the water of aerobic zone and settling tank is communicated with, be equipped with sewage water inlet pipe on the oxygen-starved area, the oxygen-starved area is equipped with return line respectively and between aerobic zone, settling region.

Biological treatment zone comprises oxygen-starved area, anaerobic zone and aerobic aeration district.Consider that there is higher dephosphorization denitrogenation requirement in sewage work, second pond returned sluge and aerobic aeration district nitrification liquid can flow to the anoxic section with water inlet behind the water inlet mixing zone, under the effect of submersible agitator, the muddy water thorough mixing, and anoxic section sludge concentration can exceed nearly 50% than aerobic section, have more mud reserves and long mud mud age than conventional method, denitrification can access effective assurance.Anaerobic zone can be exempted in the internal reflux nitrification liquid dissolved oxygen to the influence of anaerobic environment, under anaerobic, polyP bacteria in the active sludge discharges the phosphorus in the cellular material, exist with deliquescent phos-phate forms, by release to phosphorus, polyP bacteria can absorb from sewage times over the phosphorus that is discharged at aerobic stage, promptly so-called excess ingestion.And then enter the aerobic aeration district, thereby reach the purpose of biological phosphate-eliminating.

In actual use, take all factors into consideration the saving of the convenience and the cost of investment of design and construction, dividing plate between rectangle aeration tank and rectangle settling tank is typically designed to the extension of rectangle precipitation pool wall, perhaps dividing plate is located at the wire place of corresponding angles between rectangle aeration tank and rectangle settling tank.

The present invention is by designing the rectangle settling tank in the rectangle aeration tank, again the rectangle aeration tank is designed to several regions, but each zone and rectangle settling tank shared portion wall, make the floor space of entire equipment little, cost of investment is low, aeration efficient height, particularly water inlet inserts oxygen-starved area, anaerobic zone, aerobic zone, settling region formation water cycle successively, has improved denitrogenation dephosphorizing efficient.

Description of drawings

Fig. 1 is a structural representation of the present invention.

Fig. 2 is the structural representation of the embodiment of the invention 2.

Fig. 3 is the structural representation of the embodiment of the invention 3.

Embodiment

Embodiment 1, energy-conservation combined building aeration sedimentation tank, rectangle aeration tank 1 is built-in with two rectangle settling tanks 2 that constitute in parallel, be provided with dividing plate 3 between rectangle aeration tank 1 wall and rectangle settling tank 2 walls, dividing plate 3 is the extension of rectangle settling tank 2 walls, dividing plate 3 is separated into several zones with the rectangle aeration tank, and these zones can be changed to one or more of anaerobic pond, anoxic pond, Aerobic Pond, equalizing tank, hydrolysis acidification pool according to design requirements, and settling tank can be changed to just heavy or second pond or final deposition pool.

Embodiment 2, energy-conservation combined building aeration sedimentation tank, rectangle aeration tank 1 is built-in with rectangle second pond 2, second pond 2 is made of four parallel connections, be provided with dividing plate 3 between rectangle aeration tank 1 wall and rectangle settling tank 2 walls, dividing plate 3 is the extension of rectangle settling tank 2 walls, dividing plate 3 is separated into 6 zones with the rectangle aeration tank, these zones are designed to 1 logical oxygen-starved area 11 of order current successively, 1 anaerobic zone 12,4 aerobic zones 13, last aerobic zone 13 water distribution partition wall connects each second pond 2, be equipped with sewage water inlet pipe on the oxygen-starved area 11, oxygen-starved area 11 respectively with last aerobic zone, be equipped with return line between second pond.

Embodiment 3, energy-conservation combined building aeration sedimentation tank, rectangle aeration tank 1 is built-in with a rectangle second pond 2, be provided with dividing plate 3 between rectangle aeration tank 1 wall and rectangle settling tank 2 walls, dividing plate 3 is positioned at the wire place of

rectangle aeration tank

1 and 2 corresponding angles of rectangle settling tank, dividing plate 3 is separated into 4 zones with the rectangle aeration tank, these zones are designed to 1 logical oxygen-starved area 11 of order current successively, 1

anaerobic zone

12,2 aerobic zones 13, last aerobic zone 13 water distribution partition wall connects each second pond 2, be equipped with sewage water inlet pipe on the oxygen-starved area 11, oxygen-starved area 11 respectively with last aerobic zone, be equipped with return line between second pond.

Claims

1. energy-conservation combined building aeration sedimentation tank, comprise rectangle aeration tank, rectangle settling tank and connecting tube, the rectangle settling tank places the rectangle aeration tank, be communicated with by the water distribution partition wall between rectangle settling tank and rectangle aeration tank, it is characterized in that being provided with dividing plate between rectangle aeration pool wall and rectangle precipitation pool wall, dividing plate is the extension of rectangle precipitation pool wall, or dividing plate is positioned at the wire place of corresponding angles between rectangle aeration tank and rectangle settling tank, and described dividing plate is separated into several zones to the rectangle aeration tank.

2. energy-conservation combined building aeration sedimentation tank according to claim 1 is characterized in that settling tank is preliminary sedimentation tank or second pond or final deposition pool.

3. energy-conservation combined building aeration sedimentation tank according to claim 2 is characterized in that settling tank is one or two or a plurality of composing in parallel.

4. according to claim 1,2, one of 3 described energy-conservation combined building aeration sedimentation tanks, it is characterized in that the rectangle aeration tank is a square or rectangular.

5. energy-conservation combined building aeration sedimentation tank according to claim 1 is characterized in that several zones are one or more of anaerobic pond, anoxic pond, Aerobic Pond, equalizing tank, hydrolysis acidification pool.

6. energy-conservation combined building aeration sedimentation tank according to claim 5, it is characterized in that dividing plate is separated at least three zones with the rectangle aeration tank, be made as oxygen-starved area, anaerobic zone, aerobic zone that order water is communicated with successively, aerobic zone and settling tank water are communicated with, be equipped with sewage water inlet pipe on the oxygen-starved area, the oxygen-starved area is equipped with return line respectively and between aerobic zone, settling region.