CN206318832U - Sewage treatment unit - Google Patents

Abstract

The utility model discloses a domestic sewage treatment device. One end of a booster pump is connected with a water storage tank, the other end is connected with a reaction tower, and the water inlet pipe of the water storage tank is connected with a domestic sewage discharge pipe; A water-gas mixing zone is set up, a drainage pipe is set on the outer wall of the reaction tower at the position of the overflow zone, and a vent hole is set on the top of the reaction tower; a vermiculite layer and a polyphosphorus layer are sequentially set up between the overflow zone and the water-gas mixing zone from top to bottom. Bacteria attachment growth filler layer, biofilm layer loaded with denitrification bacteria, white carbon black layer, zeolite layer and crop straw layer, and a sludge discharge port is set on the outer wall of the reaction tower at the position of the biofilm layer loaded with denitrification bacteria; overflow zone, vermiculite layer, phosphorus accumulating bacteria attachment growth filler layer, biofilm layer loaded with denitrification bacteria, white carbon black layer, zeolite layer, crop straw layer and water-gas mixed zone layer and layer are separated by microporous membrane . The treatment device has simple structure, convenient use, good purification treatment effect, and reduces sewage treatment load and treatment cost.

Description

Domestic sewage treatment plant

technical field

The utility model relates to sewage treatment equipment, in particular to a domestic sewage treatment device.

Background technique

The main pollutants of canteen sewage are COD, animal and vegetable oils, surfactants (such as detergents), a small amount of NH3-N and TP.

At present, domestic sewage from canteens is seldom treated. It is mainly discharged directly into the sewer into the sewage treatment plant, or directly connected to the hidden pipe to discharge into surface water bodies, such as lakes, rivers or streams. Even if it is treated, it is a simple oil separation treatment, such as using an oil-water separator to perform simple separation of water, oil and solids, and then discharge.

Devices and methods for treating domestic sewage are disclosed in existing patent documents. For example: a new process technology for treating high-concentration organic sewage in the restaurant sewage treatment method with the application publication number CN87102257, which innovates the biological contact oxidation method, and fills the tower device with coal slag with a particle size of 5-10 cm, and divides it into four parts. Layers, with a distance of 5 cm between each layer, with aerobic bacteria and Rhodospirillum hanging on the film, under the air-water ratio of 8-10:1 aeration, the sewage is mixed with air, and the residence time is within 1 hour after passing through the cinder and biofilm. , can make the sewage below COD4500 mg/L and BOD2000 mg/L. Another example: Application Publication No.: CN105712591A The invention discloses a domestic sewage treatment terminal, which includes grille canals, acidification adjustment tanks, primary filter tanks, anaerobic biological filter tanks, and oxygenation tanks arranged in sequence from left to right , aerobic biological filter, final filter, plant detection tank and discharge channel, the filter material in the anaerobic biological filter is filled with anaerobic biological carrier, and the filter material in the aerobic biological filter is filled with good Oxygen biological carrier; each long pipe is provided with a plurality of small holes sequentially along the length direction of the long pipe, and the side wall of the release channel is also provided with a standard water discharge port, and the grid channel is connected with the acidification adjustment pool ; An oxygenation pump and a column are also fixedly installed in the oxygenation pool. The beneficial effect of the present invention is: the use of microorganisms to adsorb and degrade organic matters, the quality of effluent water is high, and the water quality of water can be accurately detected.

Among them, such as the restaurant sewage treatment method, only the theory of biological treatment is proposed, but little is involved in the device or reactor system, and the preparation of the treatment device is not even fully considered. The method is single and cannot remove most pollutants. A general domestic sewage treatment station has numerous procedures, complicated processes, and huge costs. It is basically similar to urban sewage treatment plants and is not suitable for application in small and medium-scale sewage production.

Therefore, there is an urgent need to provide a domestic sewage treatment device. The device has a simple structure and low cost. The materials used to treat sewage are cheap and easy to obtain. any risk.

Utility model content

The purpose of the utility model is to provide a domestic sewage treatment device, which has a simple structure, convenient use, good purification treatment effect, and reduces sewage treatment load and treatment cost.

In order to achieve the above purpose, the utility model provides a domestic sewage treatment device, including a water storage tank, a booster pump and a reaction tower; one end of the booster pump is connected to the outlet pipe of the water storage tank through a pipeline, and the other end is connected to the reaction tower through a pipeline. The bottom of the tower is connected, and the water inlet pipe of the water storage tank is connected with the domestic sewage discharge pipe; wherein,

The top layer of the internal cavity of the reaction tower is provided with an overflow area, and the bottom layer is provided with a water-gas mixing area. The outer wall of the reaction tower is located at the position of the overflow area. with vent holes;

Between the overflow area and the water-air mixing area, there are vermiculite layer, phosphorus accumulating bacteria attached growth filler layer, biofilm layer loaded with denitrification bacteria, white carbon black layer, zeolite layer and crop straw layer in sequence from top to bottom. A sludge discharge port is provided on the outer wall of the reaction tower at the position of the biofilm layer loaded with denitrification bacteria;

The overflow area, vermiculite layer, phosphorus accumulating bacteria attachment growth filler layer, biofilm layer loaded with denitrification bacteria, white carbon black layer, zeolite layer, crop straw layer and water-air mixing area pass through micropores between layers The filter membrane is blocked, and the microporous filter membrane can only allow water molecules and gas molecules to pass through, while the purification treatment materials cannot pass through.

Preferably, the domestic sewage treatment device also includes an aeration aerator, the water-air mixing zone is connected to the other end of the booster pump through a water pipe, and connected to the aeration aerator through an air pipe so that the aeration aerator Oxygen is introduced into the water-air mixing zone.

Preferably, the denitrification bacteria in the biofilm layer loaded with denitrification bacteria include ammonifying bacteria, nitrous bacteria and nitric acid bacteria.

Preferably, the zeolite layer is also filled with activated carbon, kaolinite and quartz sand.

Preferably, the silica layer is also filled with activated carbon, kaolinite and quartz sand.

Preferably, the vermiculite layer is also filled with activated carbon, kaolinite and quartz sand.

Preferably, the outer wall of the reaction tower is sequentially provided with a plurality of drawer openings along the height direction, and matching drawers are arranged in the plurality of drawer openings. , white carbon black layer and zeolite layer are all arranged in the drawer.

Preferably, the top of the reaction tower is also provided with a drug dosing port.

According to the above-mentioned technical scheme, the basic scheme of the utility model for sewage treatment is an upflow oxygenated biofilm treatment mode, specifically, the domestic sewage in the canteen is first collected for sedimentation or grit treatment; then, through the domestic sewage treatment device. Physical and chemical treatment, such as straw absorbing animal and plant slick oil, zeolite and white carbon black to adsorb surfactants; and then introducing bio-attachment aeration and oxidation treatment, such as cultivating ammonifying bacteria, nitrous bacteria, and nitric acid bacteria on biofilm to remove Nitrogen treatment, sludge discharge; then implant attached growth filler, cultivate phosphorus accumulating bacteria, and perform phosphorus removal treatment; then use physical and chemical treatment, such as vermiculite to adsorb some residues, such as microbial residues, fillers, and other untreated thorough Pollutants etc. Finally, simple air flotation discharges the gas generated during the treatment process, and the treated sewage is discharged through overflow treatment, which can meet the discharge standard. Through the above-mentioned multi-step purification of the domestic sewage treatment device, the sewage treatment effect is good, and the structural equipment is simple, the floor area is small, the cost is low, the materials used for sewage treatment are cheap and easy to obtain, and the discharge is completely up to standard, and no need to enter the city again Sewage plant pipelines are directly discharged into the river without any risk, which greatly reduces the load and cost of sewage treatment.

Other features and advantages of the present utility model will be described in detail in the following specific embodiments.

Description of drawings

The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, together with the following specific embodiments, are used to explain the utility model, but do not constitute a limitation to the utility model. In the attached picture:

Fig. 1 is a schematic structural view of a domestic sewage treatment device according to an embodiment of the present invention.

Explanation of reference signs

1-Water storage tank 2-Boost pump

3-Reaction tower 4-Overflow area

5- Vermiculite layer 6- Phosphorus accumulating bacteria attachment growth filler layer

7-Biofilm layer loaded with denitrification bacteria 8-Silica layer

9-Zeolite layer 10-Crop straw layer

11-Aeration and aeration machine 12-Water-air mixing zone

13-drain pipe 14-vent hole

15-Sludge discharge port

detailed description

The specific embodiment of the utility model will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the utility model, and are not intended to limit the utility model.

In the present utility model, in the case of no contrary description, the orientation words included in the term such as "upper and lower" only represent the orientation of the term in the normal use state, or are commonly known as understood by those skilled in the art, should not be construed as a limitation of this term.

Referring to Fig. 1, the utility model provides a domestic sewage treatment device, including a water storage tank 1, a booster pump 2 and a reaction tower 3; one end of the booster pump 2 is connected with the outlet pipe of the water storage tank 1 through a pipeline, and the other end is connected with the outlet pipe of the water storage tank 1 through a pipeline. The bottom end of the pipeline is connected with the reaction tower 3, and the water inlet pipe of the water storage tank 1 is connected with the domestic sewage discharge pipeline; wherein,

The top floor of the internal cavity of the reaction tower 3 is provided with an overflow area 4, and the bottom layer is provided with a water-gas mixing area 12, and the outer wall of the reaction tower 3 is provided with a drain pipe 13 for discharging purified sewage at the position of the overflow area 4, And the top of the reaction tower 3 is provided with an exhaust hole 14;

Between the overflow zone 4 and the water-air mixing zone 12, there are vermiculite layer 5, phosphorus accumulating bacteria attachment growth filler layer 6, biofilm layer 7 loaded with denitrification bacteria, white carbon black layer 8, zeolite layer 9 and crop straw layer 10, and a sludge discharge port 15 is provided on the outer wall of the reaction tower 3 at the position of the biofilm layer 7 loaded with denitrification bacteria;

Overflow area 4, vermiculite layer 5, phosphorus accumulating bacteria attachment growth filler layer 6, biofilm layer 7 loaded with denitrification bacteria, white carbon black layer 8, zeolite layer 9, crop straw layer 10 and water-air mixing area 12 The layers are blocked by microporous membranes, and the microporous membranes can only allow water molecules and gas molecules to pass through, while the purification treatment materials cannot pass through.

Through the above technical scheme, the basic scheme for sewage treatment is an upflow oxygenated biofilm treatment mode, specifically, the domestic sewage from the canteen is first collected for sedimentation or grit treatment; then, physical and chemical treatment is carried out through the domestic sewage treatment device , such as straw absorbing animal and plant slick oil, zeolite and white carbon black to adsorb surfactants; and then introducing bio-attachment aeration oxidation treatment, such as cultivating ammonifying bacteria, nitrous bacteria, and nitric acid bacteria on biofilm for denitrification treatment, Sludge discharge; then implant attached growth filler, cultivate phosphorus accumulating bacteria, and perform phosphorus removal treatment; then use physical and chemical treatment, such as vermiculite to adsorb some residues, such as microbial residues, fillers, and other pollutants that have not been treated thoroughly. . Finally, simple air flotation discharges the gas generated during the treatment process, and the treated sewage is discharged through overflow treatment, which can meet the discharge standard. Through the above-mentioned multi-step purification of the domestic sewage treatment device, the sewage treatment effect is good, and the structural equipment is simple, the floor area is small, the cost is low, the materials used for sewage treatment are cheap and easy to obtain, and the discharge is completely up to standard, and no need to enter the city again Sewage plant pipelines are directly discharged into the river without any risk, which greatly reduces the load and cost of sewage treatment.

In this embodiment, in order to provide a large amount of oxygen to the water-gas mixing zone to improve the efficiency of subsequent absorption, adsorption and biological treatment, and to provide the motive gas for gas lift and flotation produced in the process of sewage treatment, preferably, the living The sewage treatment plant also includes an aeration aerator 11, the water-air mixing zone 12 is connected to the other end of the booster pump 2 through a water pipe, and is connected to the aeration aerator 11 through a gas pipe so that the aeration aerator 11 Oxygen is introduced into the water-gas mixing zone 12 . In this way, after the sewage enters, it is fully mixed, and the mixed power is provided by the aeration aerator 11. On the one hand, the pollution load can be uniformed, and on the other hand, some reducing substances can be pretreated, such as COD, BOD, etc.

In order to further optimize the denitrification bacteria attached to the biofilm to utilize the nutrients in the sewage to carry out metabolic growth (that is, to perform denitrification treatment), it is preferred that the denitrification bacteria in the biofilm layer 7 loaded with denitrification bacteria include ammonification bacteria, nitrous bacteria and nitric acid bacteria.

In the treatment device, the white carbon black layer 8 and the zeolite layer 9 are used to adsorb surfactants and residual slick oil molecules in the sewage. In order to improve the adsorption effect, preferably, the zeolite layer 9 is also filled with activated carbon, kaolinite and quartz sand, and the white carbon black layer 8 is also filled with activated carbon, kaolinite and quartz sand.

In this treatment device, some residues are treated with vermiculite adsorption, such as microbial residues, fillers and other untreated pollutants. In order to improve the adsorption efficiency, preferably, the vermiculite layer 5 is also filled with activated carbon, kaolinite and quartz sand.

In addition, after a long period of sewage treatment, the purification materials in the vermiculite layer 5, the growth filler layer 6 of phosphorus-accumulating bacteria, the biofilm layer 7 loaded with denitrification bacteria, the white carbon black layer 8 and the zeolite layer 9 are saturated or Contamination should be taken out and replaced in time. In order to make the replacement more convenient and quick, preferably, a plurality of drawer openings are arranged along the height direction on the outer wall of the reaction tower 3, and matching drawers are provided in the plurality of drawer openings. The vermiculite layer 5, The growth filler layer 6 for phosphorus accumulating bacteria, the biofilm layer 7 carrying denitrification bacteria, the white carbon black layer 8 and the zeolite layer 9 are all arranged in the drawer.

In addition, in order to further improve the cleanliness of the overflow water in the reaction tower 3 and facilitate the addition of purification chemicals into the overflow area 4 according to the needs of use, preferably, the top of the reaction tower 3 is also provided with a drug dosing port.

The preferred embodiment of the utility model has been described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the specific details of the above-mentioned embodiment, and within the scope of the technical concept of the utility model, the technical solution of the utility model can be carried out in many ways. These simple modifications all belong to the protection scope of the present utility model.

In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way if there is no contradiction. The combination method will not be explained separately.

In addition, any combination of various implementations of the present invention can also be made, as long as they do not violate the idea of the present invention, they should also be regarded as the disclosed content of the present invention.

Claims (4)

1. A domestic sewage treatment device is characterized by comprising a water storage tank (1), a booster pump (2) and a reaction tower (3); one end of the booster pump (2) is connected with a water outlet pipe of the water storage tank (1) through a pipeline, the other end of the booster pump is communicated with the bottom end of the reaction tower (3) through a pipeline, and a water inlet pipe of the water storage tank (1) is connected with a domestic sewage discharge pipeline; wherein,

an overflow area (4) is arranged on the top layer of the cavity in the reaction tower (3), a water-gas mixing area (12) is arranged on the bottom layer, a drain pipe (13) for discharging purified sewage is arranged on the outer wall of the reaction tower (3) at the position of the overflow area (4), and an exhaust hole (14) is formed in the top end of the reaction tower (3);

a vermiculite layer (5), a phosphorus-accumulating bacteria attached growth packing layer (6), a denitrification bacteria-loaded biofilm layer (7), a white carbon black layer (8), a zeolite layer (9) and a crop straw layer (10) are sequentially arranged between the overflow area (4) and the water-gas mixing area (12) from top to bottom, and a sludge discharge port (15) is formed in the outer wall of the reaction tower (3) at the position of the denitrification bacteria-loaded biofilm layer (7);

the overflow area (4), the vermiculite layer (5), the phosphorus-accumulating bacteria attached growth packing layer (6), the biomembrane layer (7) loaded with denitrifying bacteria, the white carbon black layer (8), the zeolite layer (9), the crop straw layer (10) and the water-gas mixing area (12) are separated from one another through microporous filter membranes, and the microporous filter membranes can only allow water molecules and gas molecules to pass through and the purification treatment material cannot be permeable.

2. The domestic sewage treatment device according to claim 1, further comprising an aeration aerator (11), wherein said water-gas mixing zone (12) is connected to the other end of said booster pump (2) through a water pipe, and is connected to said aeration aerator (11) through a gas pipe so that said aeration aerator (11) feeds oxygen into said water-gas mixing zone (12).

3. The domestic sewage treatment device according to claim 1, wherein a plurality of drawer openings are sequentially arranged on the outer wall of the reaction tower (3) along the height direction, matched drawers are arranged in the drawer openings, and the vermiculite layer (5), the phosphorus-accumulating bacteria attached growth filler layer (6), the biomembrane layer (7) loaded with denitrifying bacteria, the white carbon black layer (8) and the zeolite layer (9) are arranged in the drawers.

4. The domestic sewage treatment device according to claim 1, wherein a drug adding port is further opened at the top end of the reaction tower (3).