CN202379853U - Solar aerating rural domestic sewage treatment apparatus - Google Patents

Abstract

The utility model belongs to the technical field of water treatment, in particular to a solar aeration rural sewage treatment device. It is composed of a pump, a solar panel and a sewage return device. The upper part of the device body (1) is provided with a water inlet (2) and a water outlet (15), and the bottom is provided with a mud discharge pipe (4). The inside of the device body (1) A plurality of clapboards (12) are arranged, baffles (13) are suspended between the clapboards (12), and the sewage return device is composed of an air-lift return pipe (6) and an air-lift inflation pipe (7), The gas lift tube (6) is composed of a vertical tube (61) and an inclined tube (62). One end of the vertical tube (61) is connected to the gas lift tube (7) and extended into into the secondary settling tank (18). The beneficial effect of the utility model is that: the solar panel is directly connected with the direct-current oxygenation pump, and the direct-current oxygenation pump can be used for aeration and backflow at the same time, and has the advantages of simple equipment management and easy maintenance. The sewage treatment tank adopts an integrated multi-stage contact anoxic-aerobic process, which has the characteristics of less mud production, small footprint, and good nitrogen and phosphorus removal effects.

Description

A solar aeration rural domestic sewage treatment device

technical field

The utility model belongs to the technical field of water treatment, in particular to a multi-stage contact anoxic-aerobic rural domestic sewage treatment device utilizing solar aeration.

Background technique

Rural domestic sewage has the characteristics of a large amount of water and a wide range of pollution. It is the main reason for the eutrophication of many lakes in China. However, due to the limitations of economic and management technology, most rural domestic sewage only undergoes simple anaerobic treatment or even does not undergo anaerobic treatment. The treatment is directly discharged into the receiving water body, affecting the normal use of the water body, endangering human health, and destroying the ecological environment.

Sewage treatment technology using solar aeration is an emerging sewage treatment technology, which has the advantages of low operating cost and good treatment effect. It has high promotion value and broad market in the field of sewage treatment, especially in the field of rural domestic sewage treatment. prospect.

The Chinese patent with the publication number CN 101671093A discloses a solar-powered rural domestic sewage treatment device and its technology. The concentration of COD _Cr in the influent is 250-400mg/L, the concentration of ammonia nitrogen is 10-30mg/L, and the concentration of total phosphorus is 3- Under the conditions of 7mg/L and residence time of 34-43h, the effluent can reach COD _Cr ≤60 mg/L, ammonia nitrogen ≤15 mg/L, and total phosphorus ≤1mg/L. Stored in the battery, the battery is connected to the aeration pump and the return pump. There are a lot of equipment, which increases the construction cost and is not conducive to management and maintenance. At the same time, there is no return flow of sewage, which reduces the denitrification effect.

Contents of the invention

Summary of the invention For solving the above problems, the utility model provides a kind of simple in structure, and energy utilization efficiency is high, and the rural domestic sewage treatment device of solar aeration of capital construction investment is few.

The technical scheme of the utility model is: a solar aeration rural domestic sewage treatment device, which is composed of a device body, a water inlet, a water outlet, a mud discharge pipe, a filler, an aeration head, an aeration pipe, a direct current oxygenation pump and Solar panel composition;

Wherein, the upper part of the two ends of the device body is provided with a water inlet and a water outlet, and the bottom is provided with a mud discharge pipe, and a plurality of baffles are arranged inside the device body, and baffles are suspended between the baffles, and the baffles The device body is divided into the first anoxic tank, the first aerobic tank, the second anoxic tank, the second aerobic tank and the secondary settling tank in series in sequence; the first anoxic tank, The first aerobic tank, the second anoxic tank, the second aerobic tank and the second sedimentation tank are all hung with the filler; the direct current oxygenation pump is connected with the monocrystalline silicon solar panel, and one end of the aeration pipe It is connected with the DC oxygenation pump, and the other end is connected with the aeration head installed at the bottom of the first aerobic tank and the second aerobic tank;

The device also includes an air-lift reflux device for sewage reflux, the air-lift reflux device is composed of an air-lift reflux pipe and an air-lift inflatable pipe, the air-lift reflux pipe is composed of a vertical pipe and an inclined pipe, and the vertical After one end of the pipe is connected with the air lift inflatable pipe, it is stretched into the secondary sedimentation tank, and the mouth of the vertical pipe is 5-10cm away from the bottom of the secondary sedimentation tank; Above the device body, one end of the inclined pipe is located in the middle and upper part of the first anoxic pool, 5-10cm away from the water surface; the other end of the vertical pipe is connected with the other end of the inclined pipe through an elbow; The gas lift tube is connected to the direct-current oxygen pump.

Further, the filler is a porous suspension ball filler.

Further, the size of the device body is 1m×0.3m×0.8m.

Further, the solar panel is a monocrystalline silicon solar panel.

Further, the volume ratio of the first anoxic tank, the first aerobic tank, the second anoxic tank, the second aerobic tank and the secondary sedimentation tank is 1:2:1:1:1.

The beneficial effect of the utility model is that: the solar panel is directly connected with the direct-current oxygenation pump, and the direct-current oxygenation pump can be used for aeration and backflow at the same time, and has the advantages of simple equipment management and easy maintenance. The sewage treatment tank adopts an integrated multi-stage contact anoxic-aerobic process, which has the characteristics of less mud production, small footprint, and good nitrogen and phosphorus removal effects.

Description of drawings

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

In the picture:

1. Device body, 2. Water inlet, 3. Water outlet, 4. Mud discharge pipe, 5. Filler, 6. Airlift return pipe, 61. Vertical pipe, 62. Inclined pipe, 7. Gas inflation pipe, 8 .Aeration head, 9. Aeration pipe, 10. DC oxygen pump, 11. Solar panel, 12. Partition, 13. Baffle, 14. The first anoxic pool, 15. The first aerobic pool, 16. the second anoxic pool, 17. the second aerobic pool, 18. the second sedimentation pool.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figure 1, the utility model relates to a solar aeration rural domestic sewage treatment device, including a device body 1, a water inlet 2, a water outlet 3, a mud discharge pipe 4, a filler 5, an aeration head 8, and an aeration pipe 9. DC oxygen pump 10, solar panels 11, partitions 12, baffles 13, first anoxic pool 14, first aerobic pool 15, second anoxic pool 16, second aerobic pool 17 , secondary settling tank 18 and air stripping reflux device.

Wherein, the air-lift reflux device is made up of the air-lift reflux pipe 6 and the air-lift inflatable pipe 7, and the air-lift reflux pipe 6 is made up of a vertical pipe 61 and an inclined pipe 62;

The upper part of both ends of the device body 1 is provided with a water inlet 2 and a water outlet 3, and the bottom is provided with a mud discharge pipe 4. A plurality of partitions 12 are arranged inside the device body 1, and a deflector baffle 13 is suspended between the partitions 12 and 12. The device body 1 is divided into a first anoxic tank 14, a first aerobic tank 15, a second anoxic tank 16, a second aerobic tank 17 and a secondary settling tank 18 connected in series in sequence by the partition plate 12 and the baffle plate 13. , each pool is hung with porous suspension ball packing 5; the DC oxygen pump 10 is connected to the monocrystalline silicon solar panel 11, one end of the aeration pipe 9 is connected to the DC oxygen pump 10, and the other end is connected to the first aerobic Pool 15 is connected with the aeration head 8 at the bottom of the second aerobic tank 17; after one end of the vertical pipe 61 is connected with the gas lift pipe 7, it is stretched into the secondary sedimentation tank 18, and the distance between the mouth of the pipe and the secondary sedimentation tank 18 bottom 5-10cm; Inclined pipe 61 is fixed on the top of described device body 1 in a certain slope, and nozzle is positioned at the middle upper part of the first anoxic pool 14, 5-10cm apart from water surface; Vertical pipe 61 and inclined pipe 62 The other end is connected by an elbow; the

in working:

Sewage enters the first anoxic pool 14 from the water inlet 2 provided on the upper front end of the device body 1, and at the same time, the direct current generated by the solar panel 11 drives the oxygenation pump 10 to run, realizing the exposure of the first aerobic pool 15 and the second aerobic pool 17. Oxygenation is used to provide electron acceptors for nitrifying bacteria to complete nitrification, and the influent water is mixed with the reflux liquid returned by the gas stripping and reflux device in the secondary sedimentation tank 18 in the first anoxic tank 14, and the organic matter in the raw water is used to complete denitrification Denitrification, while removing part of the organic matter. The water from the first anoxic tank 14 passes through the first aerobic tank 15, the second anoxic tank 16, and the second aerobic tank 17 in order to realize multi-stage contact anoxic and aerobic treatment, and finally passes through the secondary sedimentation tank 18 to settle and pass through the water outlet 3 Discharge, add porous suspension ball filler in the entire sewage treatment tank to increase biomass and improve the impact load resistance. At the same time, a sludge discharge pipe is installed at the bottom of the treatment tank to discharge sludge regularly to achieve phosphorus removal.

This embodiment takes the domestic sewage of the Dengchuan Workstation of the Erhai Project in Dengchuan Town, Dali Bai Autonomous Prefecture, Yunnan Province as the treatment object. The sewage indicators are shown in Table 1.

Table 1 Influent Index Unit (mg/L)

pH COD _Cr TP TN NH ₄ ⁺ -N 6-9 193.42 3.41 41.69 33.62

The integrated multi-stage contact anoxic-aerobic sewage treatment system has a daily treatment capacity of 240L/d and a HRT of 21 hours. It adopts a staged water intake method, and the water intake period is 8:00-23:00 a day. The normal operation period of the solar aeration system is 9:30~17:00 in a day (sunny day), and the total operation time is 7.5h/d. During the first month of operation, the average effluent concentration is: COD _Cr 46.19mg/L, TP0.81 mg/L, TN31.41 mg/L, NH ₄ ⁺ -N20.77mg/L, COD _Cr The removal rate was 76.1%, that of TP was 76.2%, that of TN was 23.4%, and that of NH ₄ ⁺ -N was 18.9%. The treatment effect was good.

Claims (5)

1. solar energy aeration countryside sewage treatment equipment; It is characterized in that this device is made up of device body (1), water-in (2), water outlet (3), shore pipe (4), filler (5), aeration head (8), aeration tube (9), direct current oxygen charging pump (10) and solar panels (11);

Wherein, The top at said device body (1) two ends is provided with water-in (2) and water outlet (15); The bottom is provided with shore pipe (4); Said device body (1) set inside polylith dividing plate (12); Outstanding dress baffle (13) between the said dividing plate (12), said dividing plate (12) and baffle (13) are divided into placed in-line successively first anaerobic pond (14), first Aerobic Pond (15), second anaerobic pond (16), second Aerobic Pond (17) and second pond (18) with said device body (1); All carry additionally said filler (5) in said first anaerobic pond (14), first Aerobic Pond (15), second anaerobic pond (16), second Aerobic Pond (17) and the second pond (18); Said direct current oxygen charging pump (10) is connected with said mono-crystalline silicon solar plate (11); Said aeration tube (9) one ends are connected with said direct current oxygen charging pump (10), and the other end is connected with the said aeration head (8) that is installed in said first Aerobic Pond (15) and second Aerobic Pond (17) bottom;

This device also comprises the sewage backflow device that is used for sewage backflow; Said sewage backflow device is carried the gentle gas-filled valve (7) of carrying of return line (6) by gas and is formed; Said gas is carried gas-filled valve (6) and is made up of vertical pipe (61) and inclined tube (62); After one end of said vertical pipe (61) and said gas are carried gas-filled valve (7) and is connected it is extend in the said second pond (18), the mouth of pipe of said vertical pipe (61) is 5-10cm apart from second pond (18) bottom; Said inclined tube (61) is the top that certain slope is fixed on said device body (1), and an end of said inclined tube (61) is positioned at said first anaerobic pond (15) middle and upper part, apart from water surface 5-10cm; The other end of said vertical pipe (61) is connected through elbow with the other end of said inclined tube (62); Said gas is carried gas-filled valve (7) and is connected with said direct current oxygen charging pump (10).

2. solar energy aeration countryside sewage treatment equipment according to claim 1 is characterized in that, said filler (10) is porous suspended ball filler.

3. solar energy aeration countryside sewage treatment equipment according to claim 1 is characterized in that, said device body (1) is of a size of 1m * 0.3m * 0.8m.

4. solar energy aeration countryside sewage treatment equipment according to claim 1 is characterized in that, said solar panels (11) are the mono-crystalline silicon solar electroplax.

5. solar energy aeration countryside sewage treatment equipment according to claim 1; It is characterized in that the volume ratio of said first anaerobic pond (14), first Aerobic Pond (15), second anaerobic pond (16), second Aerobic Pond (17) and second pond (18) is 1:2:1:1:1.

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