CN210012657U - A sectional water inlet type air lift and return integrated sewage treatment device - Google Patents

Abstract

The utility model discloses a sectional water inlet type air-lift backflow integrated sewage treatment device, which comprises a treatment box, a water inlet and a gas pipe, wherein eight baffles are arranged inside the treatment box, and the eight baffles divide the interior of the treatment box into a first buffer chamber, an anoxic tank a, an aerobic tank a, an anoxic tank b, an aerobic tank b, an anoxic tank c, an aerobic tank c, a second buffer zone and a secondary sedimentation tank in sequence, the water inlet comprises a first water inlet, a second water inlet and a third water inlet, the first water inlet is arranged on the upper end surface of the anoxic tank a, the second water inlet is arranged on the upper end surface of the anoxic tank b, after the utility model is sectioned, the microbial biomass in a reactor is in gradient degressive, the microbial biomass in the device is effectively maintained, the decontamination effect of the device is ensured, the concentration of precipitated sludge is effectively reduced, and the phenomenon that the amount of the returned sludge is less to cause sludge floating is avoided, ensuring the quality of the effluent.

Description

A sectional water inlet type air lift and return integrated sewage treatment device

technical field

The utility model relates to the technical field of sewage treatment, in particular to a sectional water inlet type air lift and return integrated sewage treatment device.

Background technique

At present, the problem of water pollution caused by domestic sewage in the vast rural and remote areas of our country has become increasingly prominent. In view of the current water pollution problem, decentralized sewage treatment is a necessary supplement.

At present, there are many decentralized sewage treatment technologies at home and abroad, such as anaerobic digesters, purification tanks, biofilm methods, constructed wetlands, land treatment systems, stabilization ponds and small sewage treatment plants.

The patent with the application number of 200910182634.2 proposes an integrated sewage treatment device with air lift and return, which has the advantages of simple operation, convenient maintenance, small footprint, can be designed as a buried type, no need for a return pump, low energy consumption, The sludge age is relatively long and the discharge of excess sludge is less. However, in actual operation, it is found that the amount of nitrification liquid and sludge returned by air stripping is sometimes insufficient, which is only 75%-120% of the influent flow, and often cannot reach the required return flow in the traditional A2/O process (200%). %-300%), therefore, the nitrification solution and sludge return flow of the device is insufficient, which affects its denitrification effect.

Utility model content

The purpose of the utility model is to provide a sub-water inlet type air lift and return integrated sewage treatment device, which aims to improve the problem of insufficient nitrification liquid and sludge return flow in the device in the prior art, which affects its denitrification effect.

The utility model is realized in this way:

A sectional water inlet type air lift and return integrated sewage treatment device, comprising a treatment box, a water inlet and an air pipe, eight baffles are installed inside the treatment box, and the eight baffles divide the inside of the treatment box into The first buffer chamber, anoxic tank a, aerobic tank a, anoxic tank b, aerobic tank b, anoxic tank c, aerobic tank c, second buffer zone and secondary sedimentation tank, the water inlet includes The first water inlet, the second water inlet and the third water inlet, the first water inlet is opened on the upper end surface of the anoxic pool a, the second water inlet is opened on the upper end surface of the anoxic pool b, and the first water inlet is opened on the upper end surface of the anoxic pool b. The three water inlets are opened on the upper end face of the anoxic pool c. The inside of the aerobic pool a and the aerobic pool b are installed with a first inclined plate and a second inclined plate near the middle. The inside of the aerobic pool c A first inclined plate is installed in the middle part of one side near the anoxic tank c, and the bottom of the first inclined plate and the second inclined plate is set as an air chamber, and a backflow is communicated between the secondary sedimentation tank and the first buffer chamber. Pipe, the gas pipe is located under one side of the treatment box, and the aeration pipe is installed at the position corresponding to the aerobic pool a, the aerobic pool b and the aerobic pool c on the gas pipe, and the aeration pipe is inserted away from the end of the gas pipe. There are aerobic pool a, aerobic pool b and aerobic pool c inside.

Further, the baffle plate on the side of the first buffer chamber close to the anoxic tank a is provided with an opening near the upper end, and the eight baffle plates are all provided with openings, and the eight openings are arranged alternately up and down.

Further, the side of the treatment tank close to the secondary sedimentation tank is set in an inclined state, and a water outlet pipe is installed at a position close to the upper side of the secondary sedimentation tank away from the second buffer zone.

Further, the first inclined plate and the second inclined plate in the aerobic pool a and the aerobic pool b are arranged relatively inclined.

Compared with the prior art, the beneficial effect of the present utility model is: after the utility model is segmented, the microbial biomass in the reactor presents a gradient decrease, which not only effectively maintains the microbial biomass in the device, ensures the decontamination effect of the device, but also effectively Reduce the concentration of sedimented sludge, avoid the sludge floating due to the small amount of returned sludge, and ensure the quality of the effluent.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings required in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation of the scope. For those of ordinary skill in the art, other related drawings can also be obtained from these drawings without any creative effort.

Fig. 1 is the overall structure schematic diagram of the present utility model;

Figure 2 is a plan view of the present invention.

In the figure: 1, treatment box; 101, first buffer chamber; 102, anoxic tank a; 103, aerobic tank a; 104, anoxic tank b; 105, aerobic tank b; 106, anoxic tank c; 107, aerobic tank c; 108, second buffer zone; 109, secondary sedimentation tank; 2, outlet pipe; 3, opening; 4, water inlet; 41, first water inlet; 42, second water inlet; 43 , the third water inlet; 5, aeration pipe; 6, gas pipe; 7, baffle plate; 8, air chamber; 9, return pipe; 10, the first inclined plate; 11, the second inclined plate.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments of the present invention are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Referring to Figures 1 and 2, a segmented water inlet type air lift and return integrated sewage treatment device includes a treatment box 1, a water inlet 4 and an air pipe 6, and eight baffles 7 are installed inside the treatment box 1. The baffles 7 is used to separate the processing box 1 to form different chambers, and the eight baffles 7 divide the interior of the processing box 1 into a first buffer chamber 101, anoxic pool a102, aerobic pool a103, and anoxic pool b. 104, aerobic tank b105, anoxic tank c106, aerobic tank c107, second buffer chamber 108 and secondary sedimentation tank 109, the first buffer chamber 101 is used as a sludge return point, anoxic tank a102, anoxic tank b104 and Anoxic tank c106 utilizes the action of anaerobic bacteria to hydrolyze, acidify and methanize organic matter, remove organic matter in wastewater, and improve the biodegradability of sewage, which is beneficial to subsequent aerobic treatment. Aerobic tank a103, aerobic Pool b105 and aerobic pool c107 are to allow activated sludge to perform aerobic respiration, further decompose organic matter into inorganic matter, and remove pollutants. The opening 3 is provided at the position of 1, and the opening 3 is used for the interconnection of each chamber. The eight baffles 7 are all provided with openings 3, and the eight openings 3 are alternately arranged up and down, and the interconnected passages are S-shaped;

Referring to FIG. 1 , the side of the treatment tank 1 close to the secondary sedimentation tank 109 is set in an inclined state, and the inclined side can make the sludge to settle down along the inclined side wall during precipitation, and the secondary sedimentation tank 109 is far away from the second sedimentation tank. A water outlet pipe 2 is installed near the upper position on one side of the second buffer zone 108, and the water outlet pipe 2 is used for the final water outlet;

1 , the water inlet 4 includes a first water inlet 41, a second water inlet 42 and a third water inlet 43, the first water inlet 41, the second water inlet 42 and the third water inlet 43 are used for water intake, The water inlet flow of the first water inlet 41 and the second water inlet 42 can be distributed flexibly. For example, in order to prolong the hydraulic retention time in winter and meet the better nitrification effect, the first water inlet 41 and the second water inlet 42 can be appropriately increased. In the amount of water, the first water inlet 41 is opened on the upper end face of the anoxic pond a102, the second water inlet 42 is opened on the upper end face of the anoxic pond b104, and the third water inlet 43 is opened on the upper end face of the anoxic pond c106, aerobic A first inclined plate 10 and a second inclined plate 11 are installed in the interior of the pool a103 and the aerobic pool b105 near the middle. The first inclined plate 10 and the second inclined plate 11 in the aerobic pool a103 and the aerobic pool b105 are opposite Inclined arrangement, the inside of the aerobic pool c107 is installed with the first inclined plate 10 in the middle of one side close to the anoxic pool c106, the bottom of the first inclined plate 10 and the second inclined plate 11 is set as the air chamber 8, the first inclined plate 10 And the second inclined plate 11 is used to form the air chamber 8;

Continuing to refer to FIG. 1 , a return pipe 9 is communicated between the secondary sedimentation tank 109 and the first buffer chamber 101 , the return pipe 9 is used for sludge return, the gas pipe 6 is located under one side of the treatment box 1 , and the gas pipe 6 is used for The blower blows gas, and then makes the oxygen content inside the aerobic pond to increase, and the position corresponding to the aerobic pond a103, the aerobic pond b 105 and the aerobic pond c107 on the trachea 6 is provided with the aeration pipe 5, and the aeration pipe 5 It is used to introduce the gas inside the air pipe 6 into the inside of the aerobic tank, and the end of the aeration pipe 5 away from the air pipe 6 is inserted into the inside of the aerobic tank a103, the aerobic tank b105 and the aerobic tank c107.

Working principle: When using this device, the sewage enters the anoxic tank a102, the anoxic tank b104 and the anoxic tank c106 through the first water inlet 41, the second water inlet 42 and the third water inlet 43, and the front end of the reaction device. The water intake is divided into sections, and the influent flow of the first water inlet 41, the second water inlet 42 and the third water inlet 43 can be flexibly distributed. The inflow volume of the first water inlet 41 and the second water inlet 42 is large, and the sections of the anoxic tank a102, the anoxic tank b104 and the anoxic tank c106 can preferentially utilize the easily degradable organic carbon source in the influent water for denitrification. For denitrification, the return flow of nitrification solution and sludge only needs to be 50% of the influent flow rate after the staged water inflow to achieve a good denitrification effect. The microbial biomass ensures the decontamination effect of the device, and effectively reduces the concentration of sedimented sludge, avoiding the floating of sludge caused by the small amount of returned sludge, which affects the quality of effluent.

One end of the air pipe 6 should be connected to a blower, the blower blows air, and the air enters the inside of the aeration pipe 5 through the air pipe 6, and finally enters the inside of the aerobic pool a103, the aerobic pool b105 and the aerobic pool c107.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (4)

1. The utility model provides a formula air-lift backward flow integration sewage treatment plant is intake in segmentation, is including handling case (1), water inlet (4) and trachea (6), its characterized in that: the treatment box comprises a treatment box body (1), wherein eight baffle plates (7) are arranged in the treatment box body (1), the eight baffle plates (7) divide the interior of the treatment box body (1) into a first buffer chamber (101), an anoxic tank a (102), an aerobic tank a (103), an anoxic tank b (104), an aerobic tank b (105), an anoxic tank c (106), an aerobic tank c (107), a second buffer zone (108) and a secondary sedimentation tank (109) in sequence, a water inlet (4) comprises a first water inlet (41), a second water inlet (42) and a third water inlet (43), the first water inlet (41) is formed in the upper end face of the anoxic tank a (102), the second water inlet (42) is formed in the upper end face of the anoxic tank b (104), the third water inlet (43) is formed in the upper end face of the anoxic tank c (106), a first inclined plate (10) and a second inclined plate (11) are arranged in positions, close to the middle, in the interiors of the aerobic tank a (103) and the aerobic tank b (105), the inside of aerobic tank c (107) is close to one side mid-mounting of oxygen deficiency pond c (106) has first swash plate (10), the below of first swash plate (10) and second swash plate (11) sets up to air chamber (8), it has back flow pipe (9) to communicate between secondary sedimentation tank (109) and first surge chamber (101), trachea (6) are located the one side below of handling case (1), aeration pipe (5) are installed with the position that aerobic tank a (103), aerobic tank b (105) and aerobic tank c (107) correspond on trachea (6), and aeration pipe (5) keep away from the inside that trachea (6) were inserted aerobic tank a (103), aerobic tank b (105) and aerobic tank c (107).

2. The sectional water inlet type air-lift backflow integrated sewage treatment device according to claim 1, wherein the baffle (7) on one side of the first buffer chamber (101) close to the anoxic tank a (102) is provided with an opening (3) at a position close to the upper end, eight baffles (7) are provided with openings (3), and the eight openings (3) are alternately arranged up and down.

3. The device for treating sewage through integration of air lift and reflux with sectional water inlet type according to claim 1, wherein one side of the treatment tank (1) close to the secondary sedimentation tank (109) is arranged in an inclined state, and a water outlet pipe (2) is arranged at a position close to the upper part of one side of the secondary sedimentation tank (109) far away from the second buffer zone (108).

4. The sewage treatment device integrating the sectional water inlet type air-lift backflow as claimed in claim 1, wherein the first inclined plate (10) and the second inclined plate (11) inside the aerobic tank a (103) and the aerobic tank b (105) are arranged in an inclined manner.