CN201010604Y

CN201010604Y - High-efficiency dephosphorizing and denitriding type sewage processing device

Info

Publication number: CN201010604Y
Application number: CNU2007200348068U
Authority: CN
Inventors: 华伟; 蒋岚岚
Original assignee: Wuxi Municipal Design Institute Co Ltd
Current assignee: Wuxi Municipal Design Institute Co Ltd
Priority date: 2007-02-16
Filing date: 2007-02-16
Publication date: 2008-01-23
Anticipated expiration: 2017-02-16

Abstract

The utility model relates to a combined sewage treatment device for high efficient removal of phosphorus and nitrogen, belonging to the technical filed of water treatment. The device is composed of a rectangular tank, and a elliptic tank, wherein the elliptic tank is positioned in the rectangular tank, an aerobic tank is provided in a region formed by the inner walls of the rectangular tank and outer walls of the elliptic tank, a secondary settling tank, an anaerobic tank or an anaerobic tank and an oxygen deficiency tank are provided in the elliptic tank, the elliptic tank is formed by connecting two parallel straight walls and two semicircular walls at the two ends of the straight walls, a round settling tank is provided at one end of the elliptic tank, the round settling tank and the elliptic tank share the semicircular walls, and the body of the elliptic tank outside the secondary settling tank is designed as an anaerobic tank or an anaerobic tank and an oxygen deficiency tank. The device has the advantages of high efficient removal of phosphorous and nitrogen, short retention time, compact combination of tanks, and small land area. The device can realize AO, A<2>/O, inverted A<2>/O processes, and the internal space is maximally utilized. The utility model is applicable for different conditions of phosphorus and nitrogen concentration and different phosphorus and nitrogen removal rate requirements.

Description

Highly effective dephosphorizing denitrification combined type sewage treatment equipment

Technical field

The utility model relates to a kind of highly effective dephosphorizing denitrification combined type sewage treatment equipment, belong to water-treatment technology field, refer in particular to a kind of can be with the high efficiency dephosphorating denitrogenation A of process combination one such as sewage equalizing tank, hydrolytic tank, anaerobic pond, anoxic pond, Aerobic Pond, second pond, nitrification liquid backflow, mud backflow ²/ O combination process.

Background technology

Typical A ²/ O technology is made up of anaerobism, anoxic, aerobic three segment rectangle pond bodies, is called for short A ²/ O just becomes inversion A when changing anaerobism, anoxic front and back order ²/ O technology, second pond are generally circular and set up separately.Also there is oxidation ditch second pond to be arranged in the center, A to being arranged to irrigation canals and ditches shape ²/ O forms concentric garden outside second pond, disclose " a kind of employing A as Chinese patent CN03223656.5 ²The waste disposal plant of/O oxidation ditch process "; be followed successively by two settling tanks, anaerobism ditch, anoxic ditch, aerobic ditch from inside to outside and form; settling tank is in oxidation ditch; though this design has been saved vacant lot between the Chi Yuchi for the Dan Zuchi body; shared wall has also saved the pipe connecting between Chi Yuchi, and whole oxidation ditch is combined into huge circle, and its weak point has: no internal reflux; remove demanding application scenario for total nitrogen, need add the nitrification liquid return-flow system; Be subjected to the restriction of second pond size, single pond processing power is little, only is fit to Sewage Plant on a small scale; Though it is little that take up an area of in single great circle pond, when two groups and above application scenario are set, the vacant lot that a plurality of huge circle (or oval) shape ponds form between round pond is more, and the waste of the land resources that has caused becomes bigger; It is this aforesaid combination of opel (Orbal) oxidation ditch that main process is also arranged, but because opel (Orbal) oxidation ditch non-anaerobic segment, phosphor-removing effect is affected, and minimum 16 hours of the design residence time of opel (Orbal) oxidation ditch process, is highly effective dephosphorizing denitrification A ²The twice of the minimum 8 hours of/O technological design residence time, the occupation of land cost is all bigger; Therefore make the popularization that is not widely used of aforementioned two kinds of combination procesies; Change greatly with the water yield owing to COD is higher containing the more occasion of trade effluent in addition, when acidication and equalizing tank must be set, circular or oval pond body and rectangle form pool body utilized inferior position just more obvious in combined aspects to the soil;

Summary of the invention

The utility model is just in order to overcome above-mentioned deficiency, a kind of have highly effective dephosphorizing denitrification and the short combined type sewage treatment equipment of dwell time of sewage are provided, main innovation is second pond and anaerobic pond or anaerobism, anoxic pond designs simultaneously in an oval pond body, circular second pond and oval pond body are shared the semicircle body of wall, the outer oval pond body of second pond then is designed to anaerobic pond or anaerobism, anoxic pond, the outer Aerobic Pond that is designed to all around of oval pond body, specifically implement like this: highly effective dephosphorizing denitrification combined type sewage treatment equipment, constitute by a rectangle form pool body and an oval pond body, it is characterized in that oval pond body is positioned at the rectangle form pool body, the zone that the external wall in described rectangle form pool body inwall and oval pond forms is made as Aerobic Pond, second pond, anaerobic pond or anaerobic pond and anoxic pond are located in the body of oval pond, oval pond body is that the semicircle body of wall by parallel two sides stalk and stalk two ends is formed by connecting, oval pond body one end is laid a circular second pond, described circular second pond and oval pond body are shared the semicircle body of wall, and the outer oval pond body of second pond is designed to anaerobic pond or anaerobic pond and anoxic pond.The semi arch wall can make and be positioned at the hydraulics that outside Aerobic Pond has the best, does not establish midfeather between the semicircle body of wall of the second pond outer wall and the oval pond body the other end in this equipment, is an anaerobic pond, and then anaerobic pond and Aerobic Pond move with the AO operating mode; If between the semicircle body of wall of the second pond and the oval pond body the other end, one midfeather is set, then two zones forming of midfeather and oval pond body inwall, second pond outer wall respectively cloth be made as anaerobic pond and anoxic pond, can change the volume and the residence time of anaerobic pond, anoxic pond during design by the position that changes midfeather, change anaerobism, anoxybiotic order can have A ²/ O, inversion A ²Two kinds of different technology running statuses of/O are to be fit to different water inlet concentration of nitrogen and phosphorus situation and clearance requirements.

Between two stalks of the oval pond of the utility model body partition wall can also be set, this dividing wall according to the requirement of equipment layout can with the second pond outer wall from, tangent or crossing; Two spaces that this dividing wall and second pond outer wall, oval pond body inwall form are used as mud recirculating zone and nitrification liquid recirculating zone, have made full use of the internal space.

The utility model because of rectangle form pool body internal layout the oval pond body that constitutes by second pond, anaerobic pond, anoxic pond, mud recirculating zone and nitrification liquid recirculating zone etc., make Aerobic Pond become the logical irrigation canals and ditches of ring how much, when aerobic zone used thruster to form circulation, aerobic part just became oxidation ditch; When Aerobic Pond circulation is designed to oxidation ditch, can the circular arc training wall be set at four jiaos of places of rectangle form pool body, to reduce Aerobic Pond circulation resistance, the local anoxic in angular region is beneficial to and realizes the synchronous nitration and denitrification function; The training wall at adjacent two jiaos of places also can fuse, training wall terminal with rectangle form pool body inwall from or crossing, two end regions of the inwall formation at four jiaos of places of training wall and rectangle form pool body then can partly or entirely be arranged to local oxygen-starved area bigger in the Aerobic Pond like this, strengthen the synchronous nitration and denitrification function, this has strengthened the effect of denitrogenation when operating in above-mentioned AO mode; After the training wall end intersected with rectangle form pool body inwall, the closed region, end that the inwalls at four jiaos of places of training wall and rectangle form pool body form then can be used to be arranged to hydrolytic tank or equalizing tank.

The utility model is because middle portion is the anaerobism oxygen-starved area, so only need whipping device is installed, the outside is an irrigation canals and ditches shape, can use present all kinds of oxygen replenishing equipment: the efficient Loss-on-drying gas of micropore, impeller table Loss-on-drying, commentaries on classics brush change.

Combined type sewage treatment equipment described in the utility model has highly effective dephosphorizing denitrification and the short advantage of dwell time of sewage, the compact combination of each pond body, and floor space is few, can realize AO, A ²/ O, inversion A ²The technology operation that/O etc. are different, the internal space obtains maximum using, can be fit to different water inlet concentration of nitrogen and phosphorus situations and clearance and require to handle, and suitability is extensive.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment 1.

Fig. 2 is the structural representation of the utility model embodiment 2.

Fig. 3 is the structural representation of the utility model embodiment 3.

Fig. 4 is the structural representation of the utility model embodiment 4.

Fig. 5 is the structural representation of the utility model embodiment 5.

Fig. 6 is the structural representation of the utility model embodiment 6.

Fig. 7 is the structural representation of the utility model embodiment 7.

Fig. 8 is the structural representation of the utility model embodiment 8.

Embodiment

Embodiment 1, highly effective dephosphorizing denitrification combined type sewage treatment equipment, constitute by a rectangle form pool body and an oval pond body, oval pond body is positioned at the rectangle form pool body, the zone that the external wall in rectangle form pool body inwall and oval pond forms is made as Aerobic Pond 1, second pond 2, anaerobic pond 3 is located in the body of oval pond, oval pond body is that the semicircle body of wall by parallel two sides stalk and stalk two ends is formed by connecting, oval pond body one end is laid a circular second pond 2, this circle second pond 2 is shared the semicircle body of wall with oval pond body, second pond 2 outer oval pond bodies are designed to anaerobic pond 3, and this device makes anaerobic pond and Aerobic Pond move with the AO operating mode.

Embodiment 2, highly effective dephosphorizing denitrification combined type sewage treatment equipment, constitute by a rectangle form pool body and an oval pond body, oval pond body is positioned at the rectangle form pool body, the zone that the external wall in rectangle form pool body inwall and oval pond forms is made as Aerobic Pond 1, second pond 2, anaerobic pond 3, anoxic pond 4 is located in the body of oval pond, oval pond body is that the semicircle body of wall by parallel two sides stalk and stalk two ends is formed by connecting, oval pond body one end is laid a circular second pond 2, this circle second pond 2 is shared the semicircle body of wall with oval pond body, between the semicircle body of wall of the second pond 2 and the oval pond body the other end one midfeather 11 is set, midfeather 11 and oval pond body inwall, two zones that second pond 2 outer walls form cloth respectively are made as anaerobic pond 3 and anoxic pond 4.

Embodiment 3, and reference example 1 is provided with partition wall 12 between two stalks of oval pond body, and this dividing wall 12 is tangent with the second pond outer wall.

Embodiment 4, reference example 2, be provided with partition wall 12 between two stalks of oval pond body, this dividing wall 12 and second pond outer wall from, two spaces of dividing wall 12 and second pond 2 outer walls, the formation of oval pond body inwall are made as mud recirculating zone 5 and nitrification liquid recirculating zone 6.

Embodiment 5, reference example 2, be provided with partition wall 12 between two stalks of oval pond body, this dividing wall 12 intersects with the second pond outer wall, and dividing wall 12 is made as mud recirculating zone 5 and nitrification liquid recirculating zone 6 with two spaces that second pond 2 outer walls, oval pond body inwall form.

Embodiment 6, reference example 1 or 2 or 3 or 4 or 5 is provided with circular arc training wall 10 at the Si Jiaochu of rectangle form pool body, and Aerobic Pond 1 becomes the logical irrigation canals and ditches of ring how much, form four local oxygen-starved areas 7 between the inwall at four jiaos of places of training wall and rectangle form pool body, reduced Aerobic Pond circulation resistance and realized synchronous.

Embodiment 7, reference example 1 or 2 or 3 or 4 or 5, be provided with circular arc training wall 10 at the Si Jiaochu of rectangle form pool body, the training wall 10 at wherein adjacent two jiaos of places has been linked to be one, training wall 10 terminal with rectangle form pool body inwall from, form two bigger local oxygen-starved areas 7 between four jiaos of places of training wall and rectangle form pool body inwall, strengthened the synchronous nitration and denitrification function.

Embodiment 8, reference example 1 or 2 or 3 or 4 or 5, be provided with circular arc training wall 10 at the Si Jiaochu of rectangle form pool body, the training wall 10 at wherein adjacent two jiaos of places has been linked to be one, the training wall 10 of one end terminal with rectangle form pool body inwall from, then formed a bigger local oxygen-starved area 7 between this training wall and place, rectangle form pool body right angle inwall, the training wall 10 of the other end is terminal crossing with rectangle form pool body inwall, training wall 10 has formed a closed region with the inwall at place, rectangle form pool body right angle, and hydrolytic tank 8 or equalizing tank 9 are arranged in this zone.

Claims

1. highly effective dephosphorizing denitrification combined type sewage treatment equipment, constitute by a rectangle form pool body and an oval pond body, it is characterized in that oval pond body is positioned at the rectangle form pool body, the zone that the external wall in described rectangle form pool body inwall and oval pond forms is made as Aerobic Pond, second pond, anaerobic pond or anaerobic pond and anoxic pond are located in the body of oval pond, oval pond body is that the semicircle body of wall by parallel two sides stalk and stalk two ends is formed by connecting, oval pond body one end is laid a circular second pond, described circular second pond and oval pond body are shared the semicircle body of wall, and the outer oval pond body of second pond is designed to anaerobic pond or anaerobic pond and anoxic pond.

2. combined type sewage treatment equipment according to claim 1, it is characterized in that between the semicircle body of wall of the second pond and the oval pond body the other end one midfeather being set, two zones that described midfeather and oval pond body inwall, second pond outer wall form cloth respectively are made as anaerobic pond and anoxic pond.

3. combined type sewage treatment equipment according to claim 1 is characterized in that between two stalks of oval pond body partition wall being set, and described dividing wall and second pond outer wall are from tangent or crossing.

4. combined type sewage treatment equipment according to claim 2 is characterized in that between two stalks of oval pond body partition wall being set, and described dividing wall and second pond outer wall are from tangent or crossing.

5. according to claim 3 or 4 described combined type sewage treatment equipments, it is characterized in that two spatial design that dividing wall and second pond outer wall, oval pond body inwall form are mud recirculating zone and nitrification liquid recirculating zone.

6. according to claim 1,2,3, one of 4 described combined type sewage treatment equipments, it is characterized in that the Si Jiaochu of rectangle form pool body is provided with the circular arc training wall.

7. combined type sewage treatment equipment according to claim 6 is characterized in that the training walls at adjacent two jiaos of places fuse, training wall terminal with rectangle form pool body inwall from or crossing.

8. combined type sewage treatment equipment according to claim 7, after it is characterized in that training wall is terminal and intersecting with rectangle form pool body inwall, hydrolytic tank or equalizing tank are arranged in the closed region, end of the inwalls formation at four jiaos of places of training wall and rectangle form pool body.