Rural sewage integrated stage treatment system

Abstract

The utility model belongs to a sewage treatment device, and particularly relates to an integrated stage treatment system for rural sewage. Comprising an anoxic tank communicated with a water inlet end and an aerobic tank communicated with the anoxic tank through a delivery pump, a water inlet end is communicated with the anoxic tank through the pre-denitration tank and the anaerobic tank in sequence, a material output pump of the aerobic tank is conveyed to the ultrafiltration device, and a concentrated water output end of the ultrafiltration device is connected with the aerobic tank; a qualified first path in produced water output of the ultrafiltration device is output to the external environment, and an unqualified second path is output to the advanced oxidation tower; the first path which is detected to be qualified in the advanced oxidation tower is output to the external environment, the second path which is detected to be unqualified is output to the ultraviolet sterilizer, and effluent of the ultraviolet sterilizer is discharged to the external environment after being detected to be qualified. The sewage treatment device effectively solves the problem that in the prior art, treatment difficulty is large when part of industrial sewage and commercial sewage enter a network, and has the advantages of being capable of adapting to different water quality and water quantity changes, achieving deep purification of the sewage, guaranteeing the stable treatment effect and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sewage treatment device, in particular to a kind of rural sewage integrated hierarchical treatment system. BACKGROUND

[0002] China is a big agricultural country, most of the population lives in rural areas, resulting in the increasing discharge of rural domestic sewage. With the rapid development of rural economy and society, the environmental problems in rural areas are becoming increasingly serious. The direct discharge of domestic sewage without effective treatment has affected the ecological environment and the quality of life of residents. The rural sewage treatment facilities are relatively backward, and most rural areas have not established a complete sewage treatment system. In the face of the limitations of traditional sewage treatment methods, more efficient and energy-saving sewage treatment technology is needed to promote the development and popularization of integrated sewage treatment equipment.

[0003] Some existing rural sewage treatment equipment has the following problems: large energy consumption and high cost during equipment operation; most rural sewage pipelines have not been separated into rainwater and sewage, and there is a part of industrial sewage and commercial sewage entering the network, and traditional sewage treatment equipment cannot treat the sewage to meet the requirements.

[0004] The applicant has searched the existing literature, including:

[0005] The patent document with publication number CN109179905A discloses a rural sewage treatment equipment. The existing technology has the following problems: first, it uses traditional biochemical treatment method, which can treat rural sewage with low pollution content. However, when industrial sewage and commercial sewage enter the network, it is difficult for the equipment to meet the treatment requirements, and additional advanced treatment process is needed to ensure the quality of the effluent. Second, the operation of the equipment requires a large amount of electrical energy for aeration equipment and lifting equipment, which requires a large amount of energy consumption, and is not suitable for use in economically weak rural areas.

[0006] The applicant has not found any patent literature related to this application in the domestic patent database. SUMMARY

[0007] The utility model aims to provide a kind of rural sewage integrated hierarchical treatment system, for different pollution degree sewage, can adopt filtration, biochemical, membrane treatment, advanced oxidation and sterilization treatment, can adapt to the change of different water quality and water quantity and realize the depth purification of sewage, ensure the stability of treatment effect.

[0008] The overall technical concept of the utility model is as follows:

[0009] The application relates to a rural sewage integrated hierarchical treatment system, which comprises an anoxic tank communicated with a water inlet end, an aerobic tank communicated with the anoxic tank through a pipeline and a conveying pump; the water inlet end is communicated with the anoxic tank through a pre-denitrification tank and an anaerobic tank in sequence; the material output end of the aerobic tank is connected with the material input end of an ultrafiltration device through a conveying pump; the concentrated water output end of the ultrafiltration device is connected with the aerobic tank; the water production output of the ultrafiltration device has two paths, wherein the first path of the detection-qualified water production output is output to an external environment, and the second path of the detection-unqualified water production output is connected with a high-level oxidation tower; the output of the high-level oxidation tower has two paths, wherein the first path of the detection-qualified output is output to the external environment, and the second path of the detection-unqualified output is connected with an ultraviolet sterilizer; the water output of the ultraviolet sterilizer is discharged to the external environment after detection.

[0010] The specific technical concept of the utility model also has:

[0011] In order to guarantee the oxygen content of the aerobic tank, the preferred technical implementation means is that the air pump is communicated with the inside of the aerobic tank through the aeration pipe.

[0012] In order to facilitate effective treatment of the system output material, reduce pollution to the environment and facilitate standard discharge after treatment, the preferred technical implementation means is that the sludge output at the bottom of the aerobic tank is communicated with the plate and frame filter press through the external high-pressure pump, and the filtrate output end of the plate and frame filter press is connected with the pre-denitrification tank; the material output end of the aerobic tank is connected with the material input end of the ultrafiltration device through the second lifting pump.

[0013] In order to make the aerobic microorganisms fully contact with the pollutants in the sewage and accelerate the degradation and removal process of the pollutants, the preferred technical implementation means is that the inside of the aerobic tank is provided with the suspended filler. Because the suspended filler has a large specific surface area, it can better adsorb and serve as a carrier for aerobic microorganisms.

[0014] In order to facilitate the supply of medicaments in the anoxic tank and the aerobic tank, the preferred technical implementation means is that the material output end of the carbon source medicament barrel is communicated with the inside of the anoxic tank through the conveying pump, and the material output end of the PAC medicament barrel is communicated with the inside of the aerobic tank through the conveying pump. The main role of the carbon source medicament is to facilitate the microorganisms to convert the carbon source into energy and organic matter through metabolism, maintain the normal operation of life activities, promote the reproduction and reaction of the microorganisms, and the PAC medicament has the effects of promoting the coagulation of suspended particles and removing suspended matters, colloidal particles and part of the dissolved organic matters in water.

[0015] In order to facilitate the supply of ozone to the high-level oxidation tower, guarantee the relative stability of the internal environment of the high-level oxidation tower and the smooth operation, the preferred technical implementation means is that the material output end of the ozone generator is communicated with the inside of the high-level oxidation tower.

[0016] The main function of the ultrafiltration device is to take the pressure difference between the two sides of the membrane as the driving force, take the ultrafiltration membrane as the filtering medium, when the raw liquid flows through the membrane surface under certain pressure, the many small micro-pores densely distributed on the surface of the ultrafiltration membrane only allow water and small molecule substances to pass through to become the permeate, and the substances with volume larger than the micro-pore diameter of the membrane surface are retained on the inlet side of the membrane to become the concentrated liquid, so that the purification, separation and concentration of the raw liquid are realized.

[0017] In order to fully utilize solar energy, reduce power consumption, and better adapt to economic conditions in relatively weak rural areas, the preferred technical implementation means is that the photovoltaic panel connected with the battery, the battery is electrically connected with the delivery pump, the ultraviolet sterilizer, the air pump, the high-pressure pump, the ozone generator and the circulating pump.

[0018] In order to effectively filter out large particle pollutants in sewage and reduce system load, the preferred technical implementation means is that the filter is further included, and the inlet end is communicated with the pre-denitration tank through the filter.

[0019] In order to facilitate the output control of the advanced oxidation tower, the preferred technical implementation means is that the output of the advanced oxidation tower is connected with the external environment and the ultraviolet sterilizer through the first valve of the control pipeline.

[0020] The applicant needs to explain that:

[0021] In the description of the utility model, the position relationship indicated by the terms "input", "output" and the like is based on the position relationship shown in the drawings, and is only for the convenience of simplifying the description of the utility model, and does not indicate or imply that the indicated device or element must have a specific position, a specific position structure and operation, so it cannot be understood as a limitation on the utility model. The terms "first", "second", "third" are only used to distinguish, and cannot be understood as implying importance

[0022] The technical progress achieved by the utility model lies in:

[0023] 1、The utility model adopts the biochemical unit composed of the pre-denitration tank, the anaerobic tank, the anoxic tank, the aerobic tank and the ultrafiltration device, and cooperates with the structural design of the advanced oxidation tower and the ultraviolet sterilizer, so that the filtration, biochemical treatment, membrane treatment, advanced oxidation and sterilization treatment mode can be adopted, the staged treatment of different water quality and water quantity changes can be adapted, the depth purification of sewage can be realized, and the stability of treatment effect and the qualified equipment effluent can be ensured.

[0024] 2, The utility model discloses a photovoltaic board and the structural design of battery can provide enough electric energy for electric appliance equipment such as delivery pump, air pump, circulating pump, ozone generator, ultraviolet sterilizer, effectively reduce operating cost, and it is suitable for the use of relatively weak rural economy.

[0025] 3, The utility model discloses an integrated design, convenient operation and management, reduce the management maintenance difficulty.

[0026] 4, The utility model discloses a filter liquor of plate and frame filter and the concentrated water output of ultrafiltration device structure design can effectively improve the utilization of sewage, and the sewage treatment cost is low.

[0027] 5, The detection and shunt control of the output of ultrafiltration device and advanced oxidation tower provide stable structure and process support for effectively realizing sewage treatment and discharge standard for different water quality.

[0028] 6, The utility model discloses a suspended filler structure design can realize the stable propagation of microorganism, accelerates the degradation and removal of pollutant. BRIEF DESCRIPTION OF DRAWINGS

[0029] The drawings of the utility model have:

[0030] Figure 1 It is the overall structure schematic diagram of the utility model.

[0031] The reference signs in the drawings are as follows:

[0032] 1, equipment inlet pipe, 2, filter, 3, pre-denitration jar, 4, first agitator motor, 5, first agitator, 6, anaerobic jar, 7, second agitator motor, 8, second agitator, 9, first booster pump, 10, anoxic jar, 11, third agitator motor, 12, third agitator, 13, aerobic jar, 14, second booster pump, 15, suspended filler, 16, air pump, 17, aeration pipe, 18, circulating pump, 19, ultrafiltration membrane, 20, first valve, 21, ozone generator, 22, advanced oxidation tower, 23, second valve, 24, ultraviolet sterilizer, 25, high-pressure pump, 26, plate and frame filter press, 27, carbon source reagent barrel, 28, first dosing pump, 29, PAC reagent barrel, 30, second dosing pump, 31, photovoltaic board, 32, battery. DETAILED DESCRIPTION

[0033] The utility model will be further described below in connection with examples, but should not be understood as the limitation of the utility model, the protection scope of the utility model is accurate with the contents of claim, and any equivalent technical means replacement according to the specification does not deviate from the protection scope of the utility model.

[0034] EXAMPLE

[0035] The overall structure of the embodiment is shown in the figure. The rural sewage integrated hierarchical treatment system comprises an anoxic tank 10 communicated with a water inlet end, an aerobic tank 13 communicated with the anoxic tank 10 through a pipeline and a first lifting pump 9; a device water inlet pipe 1 is communicated with the anoxic tank 10 in sequence through a filter 2, a pre-denitrification tank 3, an anaerobic tank 6, a material output end of the aerobic tank 13 is connected to a material input end of an ultrafiltration device through a second lifting pump 14, the ultrafiltration device comprises a circulating pump 18 and an ultrafiltration membrane 19; a concentrated water output end of the ultrafiltration membrane 19 is connected to the aerobic tank 13, and water produced by the ultrafiltration membrane 19 is respectively connected to two output ends through a first valve 20 of a control pipeline on-off state switching, wherein a first output of a detection qualified output is output to an external environment, and a second output of a detection unqualified output is connected to a high-level oxidation tower 22; an output of the high-level oxidation tower 22 is communicated with two output ends through a second valve 23 of a control pipeline on-off state switching, wherein a first output of a detection qualified output is output to an external environment, and a second output of a detection unqualified output is connected to an ultraviolet sterilizer 24, and water discharged from the ultraviolet sterilizer 24 is discharged to an external environment after detection.

[0036] The first agitator 5 in the pre-denitrification tank 3 is driven to rotate by the first agitator motor 4, the second agitator 8 in the anaerobic tank 6 is driven to rotate by the second agitator motor 7, and the third agitator 12 in the anoxic tank 10 is driven to rotate by the third agitator motor 11.

[0037] The air pump 16 is communicated with the inside of the aerobic tank 13 through the aeration pipe 17.

[0038] The sludge output at the bottom of the aerobic tank 13 is communicated with the plate and frame filter press 26 through the external high-pressure pump 25, and the filtrate output end of the plate and frame filter press 26 is connected to the pre-denitrification tank 3.

[0039] The aerobic tank 13 is provided with the suspended filler 15.

[0040] The material output end of the carbon source medicament barrel 27 is communicated with the inside of the anoxic tank 10 through the first dosing pump 28, and the material output end of the PAC medicament barrel 29 is communicated with the inside of the aerobic tank 13 through the second dosing pump 30.

[0041] The material output end of the ozone generator 21 is communicated with the inside of the high-level oxidation tower 22.

[0042] Further comprising a photovoltaic panel 31 connected with a battery 32, the battery 32 is electrically connected with the first dosing pump 28, the second dosing pump 30, the first lifting pump 9, the second lifting pump 14, the ultraviolet sterilizer 24, the air pump 16, the high-pressure pump 25, the ozone generator 21 and the circulating pump 18.

Claims

1. A rural wastewater integrated graded treatment system, comprising an anoxic tank (10) connected to the inlet, and an aerobic tank (13) connected to the anoxic tank (10) via pipelines and a transfer pump; characterized in that The inlet is connected to the anoxic tank (10) via the pre-denitrification tank (3) and the anaerobic tank (6) in sequence. The material output end of the aerobic tank (13) is connected to the material input end of the ultrafiltration device via a transfer pump. The concentrated water output end of the ultrafiltration device is connected to the aerobic tank (13). The ultrafiltration device has two outputs. The first output that passes the test is sent to the external environment, and the second output that fails the test is connected to the advanced oxidation tower (22). The advanced oxidation tower (22) has two outputs. The first output that passes the test is sent to the external environment, and the second output that fails the test is connected to the ultraviolet sterilizer (24). The effluent from the ultraviolet sterilizer (24) is discharged to the external environment after passing the test.

2. The integrated graded treatment system for rural sewage according to claim 1, characterized in that... The air pump (16) is connected to the interior of the aerobic tank (13) through the aeration pipe (17).

3. The integrated graded treatment system for rural sewage according to claim 1, characterized in that... The sludge output from the bottom of the aerobic tank (13) is connected to the plate and frame filter press (26) via an external high-pressure pump (25). The filtrate output end of the plate and frame filter press (26) is connected to the pre-denitrification tank (3). The material output end of the aerobic tank (13) is connected to the material input end of the ultrafiltration device via the second lift pump (14).

4. The integrated graded treatment system for rural sewage according to claim 1, characterized in that... The aerobic tank (13) is equipped with suspended packing (15).

5. The integrated graded treatment system for rural sewage according to claim 1, characterized in that... The material output end of the carbon source reagent tank (27) is connected to the interior of the anoxic tank (10) via a transfer pump, and the material output end of the PAC reagent tank (29) is connected to the interior of the aerobic tank (13) via a transfer pump.

6. The integrated graded treatment system for rural sewage according to claim 1, characterized in that... The material output end of the ozone generator (21) is connected to the interior of the advanced oxidation tower (22).

7. The integrated graded treatment system for rural sewage according to claim 1, characterized in that... The ultrafiltration device includes a circulation pump (18) and an ultrafiltration membrane (19). The product water of the ultrafiltration membrane (19) is connected to two output terminals via a first valve (20) that controls the on / off state of the pipeline.

8. The integrated graded treatment system for rural sewage according to any one of claims 1, 2, 3, 5 to 7, characterized in that... It also includes a photovoltaic panel (31) connected to the battery (32), and the battery (32) is electrically connected to a delivery pump, an ultraviolet sterilizer (24), an air pump (16), a high-pressure pump (25), an ozone generator (21), and a circulation pump (18).

9. The integrated graded treatment system for rural sewage according to claim 1, characterized in that... It also includes a filter (2), and the water inlet is connected to the pre-denitrification tank (3) via the filter (2).

10. The integrated graded treatment system for rural sewage according to claim 1, characterized in that... The output of the advanced oxidation tower (22) is connected to the external environment and the ultraviolet sterilizer (24) respectively via the first valve (20) that controls the on / off state of the pipeline.

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