CN209835910U - A buried integrated aquaculture sewage treatment system - Google Patents

Abstract

The utility model discloses an underground integrated aquaculture sewage treatment system, a sedimentation tank, a first-level sewage treatment tank, and a second-level sewage treatment tank, wherein the sedimentation tank is connected with the first-level sewage treatment tank, and the first-level sewage treatment tank It is connected with the secondary sewage treatment tank, and the secondary sewage treatment tank is connected with the sedimentation tank through the return pipeline. The return pipeline is equipped with a sewage pump I; the upper end of the sedimentation tank is provided with a discharge port, and the side wall is provided with a sewage inlet; The upper end of the barrel is provided with a dosing port, and the pipeline between the first-level sewage treatment barrel and the second-level sewage treatment barrel is equipped with a sewage pump II; the second-level sewage treatment barrel is equipped with an aeration device; the sedimentation tank has funnel-shaped sludge sedimentation area, the bottom of the sedimentation tank connected to the sludge sedimentation area is inclined. The utility model has high efficiency and thorough treatment of sewage, and can process and recycle ammonia, nitrogen and phosphorus in the sewage. The treated aquaculture sewage can reach the national first-class discharge standard and can be directly discharged.

Description

A buried integrated aquaculture sewage treatment system

technical field

The utility model belongs to the technical field of sewage treatment, more specifically, the utility model relates to an underground integrated aquaculture sewage treatment system.

Background technique

Sewage treatment refers to the use of professional technical means and sewage treatment equipment to treat sewage, degrade and kill harmful substances and germs in sewage, so that the treated sewage can meet the discharge standards, which can prevent harmful substances and germs from entering the atmosphere and external water circulation In addition to protecting the environment, the sewage can be recycled and reused, saving water resources.

In recent years, the aquaculture industry has developed rapidly in rural areas of our country. The ensuing problem is that a large amount of aquaculture sewage needs to be treated to avoid damage to the environment. At the same time, it is also necessary to protect fish, shellfish and other aquatic products during aquaculture. Poisoned by harmful substances in aquaculture sewage.

The existing rural aquaculture sewage treatment technology is not mature, and aquaculture sewage is different from domestic sewage, because aquaculture sewage has eutrophication (because it contains artificial bait, fish fertilizer, and aquaculture excrement, etc.), sludge content Therefore, the fish pond sewage produced by aquaculture does not have hard solid waste to be fermented, and does not require septic tanks and regulating tanks. However, the content of ammonia nitrogen and phosphorus in fish pond sewage is higher than that of other sewage in rural areas, so ammonia nitrogen and phosphorus need to be recycled. The current utilization efficiency of fish pond sewage is not high, the treatment is not thorough, and a large amount of organic waste contained in it is not recycled, which leads to serious waste of resources, and many of the treated aquaculture sewage do not meet the national discharge standards, causing serious environmental pollution. destroy.

Utility model content

An object of the present invention is to solve at least the above-mentioned problems and provide at least the advantages which will be described later.

In order to achieve these purposes and other advantages according to the utility model, a buried integrated aquaculture sewage treatment system is provided, comprising:

Sedimentation tank, first-level sewage treatment tank, second-level sewage treatment tank, wherein, the sedimentation tank is connected with the first-level sewage treatment tank, the first-level sewage treatment tank is connected with the second-level sewage treatment tank, and the second-level sewage treatment tank is connected with the The sedimentation tank is connected, and the return pipeline is equipped with a sewage pump I;

The upper end of the sedimentation tank is provided with a discharge port, and the side wall is provided with a sewage inlet; the upper end of the first-level sewage treatment tank is provided with a dosing port, and the pipeline between the first-level sewage treatment tank and the second-level sewage treatment tank is equipped with a sewage pump II; The sewage treatment tank is equipped with an aeration device;

The sedimentation tank has a funnel-shaped sludge sedimentation area, and the bottom of the sedimentation tank connected with the sludge sedimentation area is inclined.

Preferably, wherein, the sedimentation tank structure also includes:

The upper part of the sedimentation tank is provided with a vertical baffle, and the lower end of the baffle is flush with the upper end of the sludge sedimentation area;

There is a slide rail on the side where the baffle at the upper end of the sedimentation tank is fixed, and a scraper is arranged under the slide rail, and the scraper end of the mud scraper is close to the inclined bottom of the sedimentation tank.

The two ends of the mud scraper are fixed on the rotating connecting rod, and the rotating connecting rod is installed on the slide rail through the slider, and a push rod is installed at one end of the slider;

The structure of the rotating link includes: a vertical rod, a rotating shaft and a rotating rod connected to the vertical rod through the rotating shaft, wherein the mud scraper is installed under the rotating rod.

Preferably, a stirring device is installed at the bottom of the primary sewage treatment tank, and the stirring device has paddles and a rotating shaft.

Preferably, wherein, the aeration device is installed on the bottom and upper part of the secondary sewage treatment tank, and its structure includes:

A plurality of circular water nozzles are arranged at the aeration end of the aeration device;

The air suction port communicates with the outside of the secondary sewage treatment barrel.

Preferably, wherein, the mud scraper is installed on the slide rail through a rotating connecting rod, the rotating connecting rod includes a vertical rod and a rotating rod, and the vertical rod is installed on the sliding rail through a sliding block, when the mud scraper moves along When the slide rail moves from the inclined upper end to the lower end, the rotating connecting rod rotates and elongates to ensure that the mud scraper can be close to the bottom of the sedimentation tank during the moving process; when it moves from the inclined lower end to the upper end along the sliding rail, the rotating connecting rod rotates shorten. Preferably, the connecting pipe between the sedimentation tank and the primary sewage treatment tank is close to the inclined bottom of the sedimentation tank, and the sewage can flow into the primary sewage treatment tank through the pipeline.

Preferably, wherein, the bottom of the sedimentation tank is provided with a sludge outlet, the bottom of the secondary sewage treatment tank is provided with a sewage discharge port, the connection between the return pipeline and the secondary sewage treatment tank, and the connection between the secondary return pipeline and the sedimentation tank And the mud discharge port is equipped with valves.

The utility model at least includes the following beneficial effects:

(1) The utility model can centrally collect and treat rural aquaculture sewage, and the suspended solids, chemical oxygen demand, biochemical oxygen demand, ammonia nitrogen content and total phosphorus in the treated sewage are all greatly reduced, reaching the national " Pollutant Discharge Standards for Urban Sewage Treatment Plants (GB18918-2002) Level 1 (B) standard, which can be directly discharged into rivers and lakes;

(2) Due to the return pipeline, the sewage in the sedimentation tank and the secondary sewage treatment barrel can be treated multiple times, the sewage treatment is more thorough, and more organic fertilizers can be recovered.

Other advantages, objectives and features of the utility model will partly be embodied through the following description, and partly will be understood by those skilled in the art through the research and practice of the utility model.

Description of drawings:

Fig. 1 is a schematic diagram of a buried integrated aquaculture sewage treatment system sedimentation tank, primary sewage treatment bucket and secondary sewage treatment bucket provided by the utility model;

Fig. 2 is a structural schematic diagram of a mud scraper for an underground integrated aquaculture sewage treatment system provided by the utility model;

Fig. 3 is a top view of the sedimentation tank of a buried integrated aquaculture sewage treatment system provided by the utility model;

Fig. 4 is a flowchart of an underground integrated aquaculture sewage treatment system provided by the utility model.

Detailed ways:

The utility model will be described in further detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it by referring to the description.

It should be understood that terms such as "having", "comprising" and "including" as used herein do not entail the presence or addition of one or more other elements or combinations thereof.

As shown in Figure 1-3: a buried integrated aquaculture sewage treatment system of the present utility model, including:

Sedimentation tank 1, primary sewage treatment tank 2, secondary sewage treatment tank 3, wherein, sedimentation tank 1 is connected with primary sewage treatment tank 2, primary sewage treatment tank 2 is connected with secondary sewage treatment tank 3, and secondary sewage treatment tank 3 is connected The treatment barrel 3 is communicated with the sedimentation tank 1 through the return pipeline 20, and the return pipeline 20 is provided with a sewage pump I19;

The upper end of the sedimentation tank 1 is provided with a discharge port 11, and the side wall is provided with a sewage inlet 12; the upper end of the primary sewage treatment tank 2 is provided with a drug injection port 14, and the pipeline between the primary sewage treatment tank 2 and the secondary sewage treatment tank 3 is provided with Sewage pump II 15; the secondary sewage treatment barrel 3 is provided with an aeration device 16;

The sedimentation tank 1 has a funnel-shaped sludge sedimentation area 4, and the bottom of the sedimentation tank 1 connected to the sludge sedimentation area 4 is inclined.

Working principle: As shown in Figure 1 and Figure 3, the aquaculture sewage enters the sedimentation tank 1 through the sewage inlet 12, and puts alum into the sedimentation tank 1 through the input port 11, and most of the sludge in the sewage is deposited in the sedimentation tank 1. The mud sedimentation area gathers and settles; the sewage treated by the sedimentation tank 1 flows into the first-level sewage treatment tank 2 by itself through the pipeline, and puts sterilizing and disinfecting drugs into the sewage through the drug injection port 14 of the first-level sewage treatment tank 2, such as bleaching powder and disinfection water , quicklime, etc.; the sewage pump II 15 pumps the sterilized sewage into the secondary sewage treatment barrel 3, the aeration device 16 sucks air and sewage, sprays the sewage into the air, and provides sufficient oxygen to the sewage. Under the oxygen environment, the nitrifying bacteria group and phosphorus accumulating bacteria in the sludge in the secondary sewage treatment tank 3 decompose, transform and recycle the ammonia nitrogen phosphorus in the sewage, and start the sewage pump I19 to pump the sewage in the secondary treatment tank 3 into the sedimentation tank 1 for reflux reprocessing. The sewage recovered and treated by the sedimentation tank 1, the first-level sewage treatment tank 2 and the second-level sewage treatment tank 3 can be directly discharged into rivers and lakes, or the sewage sludge can be collected and used as farm manure.

In the above technical solution, the structure of the sedimentation tank 1 also includes:

The upper part of the sedimentation tank 1 is provided with a vertical baffle 5. The lower end of the baffle 5 is flush with the upper end of the sludge sedimentation area 4. The baffle 5 can prevent the incoming sewage sludge from splashing into the inclined bottom of the sedimentation tank 1 or directly entering the first-class sewage. processing bucket;

There is a slide rail 7 on one side where the baffle plate 5 at the upper end of the sedimentation tank 1 is fixed, and a scraper 6 is arranged under the slide rail 7. The scraper end of the mud scraper 6 is close to the inclined bottom of the sedimentation tank 1, and the mud scraper will deposit on the sediment The sludge at the inclined bottom of the pool 1 is scraped to the sludge sedimentation area 4, so that the sludge is concentrated and deposited in the sludge sedimentation area, which is convenient for the recycling and reuse of sludge;

In the above technical solution, a stirring device 13 is installed at the bottom of the primary sewage treatment barrel 2, and the stirring device has paddles and a rotating shaft. Sterilization is more thorough.

In the above technical solution, the aeration device is installed on the bottom and upper part of the secondary sewage treatment tank, and its structure includes:

A plurality of circular water spouts 161, which are arranged at the aeration end of the aeration device;

The air suction port 162 is connected with the outside of the secondary sewage treatment tank, and the aeration device is to feed oxygen into the secondary sewage treatment tank 3. Under the environment of sufficient oxygen, the decomposition and conversion of nitrogen, phosphorus and ammonia by nitrifying bacteria and phosphorus accumulating bacteria are accelerated. speed.

In the above technical solution, the mud scraper 6 is installed on the slide rail 7 through a rotating connecting rod. The rotating connecting rod includes a vertical rod 22, a rotating shaft 21 and a rotating rod 23 that is rotationally connected to the rotating shaft 21. The vertical rod 22 passes through The slider 25 is installed on the slide rail 7, the push rod 26 of the mud scraper can be driven by manpower or a trolley, the manpower directly acts on the push rod to push the mud scraper 6, and the push rod can also be driven by fixing the push rod on the trolley 6 moves; when the mud scraper 6 moves from the inclined upper end of the pool bottom 24 to the lower end along the slide rail 7, due to the action of gravity, the rotating rod 23 gradually rotates from inclination to vertical, and the rotation elongates; when the mud scraper 6 moves from the pool bottom When the bottom 24 moves upwards, the rotating rod is gradually rotated from vertical to inclined, and such design ensures that the mud scraper 6 can be close to the bottom of the sedimentation tank 1 during the moving process.

In the above technical solution, the connecting pipe between the sedimentation tank 1 and the primary sewage treatment tank 2 is close to the inclined bottom of the sedimentation tank 1, and the sewage can flow into the primary sewage treatment tank 2 through the pipeline.

In the above technical solution, the bottom of the settling tank 1 is provided with a sludge outlet 9, the bottom of the secondary sewage treatment tank 3 is provided with a sewage outlet, and the connection between the return pipeline 20 and the secondary sewage treatment tank 3 and the sludge discharge port 9 are all A valve is provided.

The number of devices and the scale of processing described here are used to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.

Although the embodiment of the present utility model has been disclosed as above, it is not limited to the use listed in the description and the implementation, and it can be applied to various fields suitable for the present utility model. For those familiar with the art, Further modifications can be readily effected, so the invention is not limited to the specific details and examples shown and described herein without departing from the general concept defined by the claims and their equivalents.

Claims (7)

1. A buried integrated aquaculture sewage treatment system, characterized in that it comprises: Sedimentation tank, first-level sewage treatment tank, second-level sewage treatment tank, wherein, the sedimentation tank is connected with the first-level sewage treatment tank, the first-level sewage treatment tank is connected with the second-level sewage treatment tank, and the second-level sewage treatment tank is connected with the The sedimentation tank is connected, and the return pipeline is equipped with a sewage pump I; The upper end of the sedimentation tank is provided with a discharge port, and the side wall is provided with a sewage inlet; the upper end of the first-level sewage treatment tank is provided with a dosing port, and the pipeline between the first-level sewage treatment tank and the second-level sewage treatment tank is equipped with a sewage pump II; The sewage treatment tank is equipped with an aeration device; The sedimentation tank has a funnel-shaped sludge sedimentation area, and the bottom of the sedimentation tank connected with the sludge sedimentation area is inclined. 2. The buried integrated aquaculture sewage treatment system according to claim 1, wherein the sedimentation tank structure further comprises: The upper part of the sedimentation tank is provided with a vertical baffle, and the lower end of the baffle is flush with the upper end of the sludge sedimentation area; There is a slide rail on the side where the baffle at the upper end of the sedimentation tank is fixed, and a scraper is installed under the slide rail, and the scraper end of the mud scraper is close to the inclined bottom of the sedimentation tank; The two ends of the mud scraper are fixed on the rotating connecting rod, and the rotating connecting rod is installed on the slide rail through the slider, and a push rod is installed at one end of the slider; The structure of the rotating link includes: a vertical rod, a rotating shaft and a rotating rod connected to the vertical rod through the rotating shaft, wherein the mud scraper is installed under the rotating rod. 3. The buried integrated aquaculture sewage treatment system according to claim 1, wherein a stirring device is installed at the bottom of the primary sewage treatment tank, and the stirring device has paddles and a rotating shaft. 4. The buried integrated aquaculture sewage treatment system according to claim 1, wherein the aeration device is installed on the bottom and upper part of the secondary sewage treatment tank, and its structure includes: A plurality of circular water nozzles are arranged at the aeration end of the aeration device; The air suction port communicates with the outside of the secondary sewage treatment barrel. 5. The buried integrated aquaculture sewage treatment system according to claim 1, wherein the scraper is mounted on the slide rail through a rotating connecting rod, and the rotating connecting rod includes a vertical rod and a rotating rod, The vertical rod is installed on the slide rail through the slider. When the mud scraper moves from the inclined upper end to the lower end along the slide rail, the rotating connecting rod rotates and elongates to ensure that the mud scraper can be close to the bottom of the sedimentation tank during the moving process; When it moves from the inclined lower end to the upper end along the slide rail, the rotating connecting rod shortens. 6. The buried integrated aquaculture sewage treatment system as claimed in claim 1, characterized in that the connecting pipeline between the sedimentation tank and the first-level sewage treatment barrel is close to the inclined bottom of the sedimentation tank, and the sewage can flow into the first-level sewage through the pipeline processing bucket. 7. The buried integrated aquaculture sewage treatment system as claimed in claim 1, wherein a mud discharge port is provided at the bottom of the sedimentation tank, a sewage discharge port is provided at the bottom of the secondary sewage treatment tank, and the return pipe is connected to the secondary sewage treatment tank. Valves are installed at the joints and mud discharge outlets of the first-grade sewage treatment barrels.