Multi-stage pollution discharge filtering device with three pool bodies

Abstract

The utility model discloses a three-tank multi-stage pollution discharge filtering device, which comprises a desilting basin, a methane tank and a three-stage filtering tank, one side wall surface of the desilting basin is connected with a desilting basin feed port, the other side wall surface of the desilting basin is connected with a desilting basin discharge pipeline, the methane tank comprises a primary tank and a secondary tank which are communicated with each other, and the primary tank is connected with the secondary tank. The device comprises a three-stage filter tank, a first filter tank, a second filter tank and a clean water tank are arranged in the three-stage filter tank from left to right, a rack is fixedly mounted at the top of the first filter tank, and a residue pump and a stirring motor are fixedly mounted on the top wall surface of the rack. Biogas slurry and biogas residues can be directly used for irrigating crops in fruit tree farmlands in mountain forests after being precipitated and filtered by the three-stage filter tank, can also be processed, sold and transported by utilizing special dry-wet separation equipment, and are simple in structure, low in cost, easy to operate and manage, economical and practical.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of breeding sewage discharge, specifically to a multistage sewage discharge filtering device of three pool bodies. BACKGROUND

[0002] Livestock breeding manure resource utilization is the fundamental approach to breeding pollution prevention and control. Promoting livestock breeding manure resource utilization can reduce the emission of harmful gases and greenhouse gases such as carbon dioxide, degrade organic matter such as COD and NH3-N in wastewater, solve the environmental pollution problem of manure and wastewater, improve air quality, purify the breeding environment, promote the increase of livestock production and product quality, reduce the terminal sewage discharge of breeding farms, and reduce the cost of manure treatment. It can also turn breeding manure resources into treasure and become renewable fertilizer, energy and biological resources to increase income.

[0003] Large-scale pig breeding farms have high manure output, and it is difficult to utilize manure resources. In the prior art, a large amount of manpower and material resources are usually required to treat the manure of large-scale pig breeding farms, which not only has high treatment cost, but also has unsatisfactory treatment effect. Therefore, it is an important issue to be solved to research economically applicable pig manure comprehensive treatment technology. CONTENT OF THE UTILITY MODEL

[0004] In view of the deficiencies of the prior art, the utility model provides a multistage sewage discharge filtering device of three pool bodies, which solves the technical problems proposed in the above background technology.

[0005] To achieve the above purpose, the utility model realizes the following technical scheme: a multistage sewage discharge filtering device of three pool bodies, including a sand settling tank, a biogas tank and a three-stage filtering tank, one side wall surface of the sand settling tank is connected with a sand settling tank feed inlet, the other side wall surface of the sand settling tank is connected with a sand settling tank discharge pipeline, the biogas tank includes a main tank and an auxiliary tank which are interconnected, the sand settling tank discharge pipeline is connected to the main tank, the auxiliary tank is connected with a biogas tank discharge pipeline, a first filtering tank, a second filtering tank and a clean water tank are arranged in the three-stage filtering tank from left to right on one side, the biogas tank discharge pipeline is connected to the first filtering tank, a rack is fixedly installed on the top of the first filtering tank, an extraction pump and a stirring motor are fixedly installed on the top wall surface of the rack, the extraction pump penetrates through the wall surface of the rack and is connected with an extraction pipe in the first filtering tank, the stirring motor penetrates through the wall surface of the rack and is connected with a stirring blade in the first filtering tank, a first water outlet pipe is connected between the first filtering tank and the second filtering tank, a second water outlet pipe is connected between the second filtering tank and the clean water tank, and a biological membrane filter is fixedly installed on the direction end of the second water outlet pipe in the second filtering tank.

[0006] Preferably, the sand settling tank inlet is located at the top of the side wall of the sand settling tank, the sand settling tank outlet pipeline is horizontally lower than the sand settling tank inlet in the sand settling tank, and the sand settling tank outlet pipeline is horizontally lower than the sand settling tank outlet pipeline in the sand settling tank.

[0007] Preferably, the biogas tank outlet pipeline is located at the top of the side wall of the first filter tank, and the first water outlet pipeline and the second water outlet pipeline are horizontally located at the same position and are located at the horizontal position of the biogas tank outlet pipeline.

[0008] Preferably, a distance is left between the slag pumping pipe and the edge of the stirring blade.

[0009] Preferably, the first filter tank has the same size as the clean water tank, and the second filter tank has three times the size of the clean water tank.

[0010] Advantages

[0011] The three-tank multi-stage sewage filtering device has the following advantages: when the device is used, animal manure first flows into the sand settling tank to precipitate some impurities, sand and foreign matters at the bottom of the sand settling tank, and then the animal manure and urine are discharged through the reserved port above, and then the outlet pipe of the sand settling tank is connected to the biogas tank to guide the flow, and then the biogas produced by the fermentation of the biogas tank is guided to the three-stage filter tank through the slag liquid discharge port of the biogas tank, and the biogas slurry is separated after being precipitated and filtered by the three-stage filter tank. The biogas slurry after being precipitated by the three-stage filter tank can be directly used for irrigating mountain forests, fruit trees, farmland and crops, and can also be processed, sold and transported by using special dry-wet separation equipment. The device has the advantages of simple structure, low cost, easy operation and management, and economic practicability. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 The three-tank multi-stage sewage filtering device has the following advantages: when the device is used, animal manure first flows into the sand settling tank to precipitate some impurities, sand and foreign matters at the bottom of the sand settling tank, and then the animal manure and urine are discharged through the reserved port above, and then the outlet pipe of the sand settling tank is connected to the biogas tank to guide the flow, and then the biogas produced by the fermentation of the biogas tank is guided to the three-stage filter tank through the slag liquid discharge port of the biogas tank, and the biogas slurry is separated after being precipitated and filtered by the three-stage filter tank. The biogas slurry after being precipitated by the three-stage filter tank can be directly used for irrigating mountain forests, fruit trees, farmland and crops, and can also be processed, sold and transported by using special dry-wet separation equipment. The device has the advantages of simple structure, low cost, easy operation and management, and economic practicability.

[0013] In the figure: 1, sand settling tank; 2, sand settling tank inlet; 3, sand settling tank outlet pipeline; 4, main tank; 5, auxiliary tank; 6, biogas tank outlet pipeline; 7, three-stage filter tank; 8, first filter tank; 9, second filter tank; 10, clean water tank; 11, first water outlet pipeline; 12, second water outlet pipeline; 13, biological membrane filter; 14, rack; 15, slag pumping pump; 16, stirring motor; 17, slag pumping pipe; 18, stirring blade; 19, biogas tank. DETAILED DESCRIPTION

[0014] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0015] Please refer to Figure 1 The utility model provides a kind of three-pool multistage pollution filtering device technical scheme: a kind of three-pool multistage pollution filtering device, including sand trap 1, biogas tank 19 and three-stage filter tank 7, the side wall surface of sand trap 1 is connected with sand trap feed inlet 2, the other side wall surface of sand trap 1 is connected with sand trap discharge pipeline 3, the biogas tank 19 includes mutually intercommunicating positive pool 4 and auxiliary pool 5, sand trap discharge pipeline 3 is connected to the positive pool 4, the auxiliary pool 5 is connected with biogas tank discharge pipeline 6, the first filter tank 8, second filter tank 9 and clean water tank 10 are opened in three-stage filter tank 7 from left to right one side, biogas tank discharge pipeline 6 is connected to the first filter tank 8, the top of the first filter tank 8 is fixedly installed with rack 14, the top wall surface of rack 14 is fixedly installed with slag pump 15 and stirring motor 16, the slag pump 15 is connected with slag pipe 17 to the first filter tank 8 by passing through the wall surface of rack 14, the stirring motor 16 is connected with stirring blade 18 to the first filter tank 8 by passing through the wall surface of rack 14, the first water outlet pipe 11 is connected between the first filter tank 8 and the second filter tank 9, the second water outlet pipe 12 is connected between the second filter tank 9 and the clean water tank 10, the second water outlet pipe 12 is fixedly installed with biological membrane filter 13 in the direction one end in the second filter tank 9.

[0016] Further, the sand trap feed inlet 2 is located at the top end of the side wall surface of the sand trap 1, the sand trap discharge pipeline 3 is located at the horizontal position lower than the sand trap feed inlet 2 in the sand trap 1, the sand trap discharge pipeline 3 is located at the horizontal position lower than the sand trap discharge pipeline 3 in the sand trap 1 at the positive pool 4, to ensure that the overall device generates self-flowing effect under the action of gravity.

[0017] Further, the biogas tank discharge pipeline 6 is located at the top end of the side wall surface of the first filter tank 8 at the first filter tank 8, the first water outlet pipe 11 and the second water outlet pipe 12 are located at the same horizontal position and are located at the horizontal position of the biogas tank discharge pipeline 6, to ensure that the biogas forms self-flowing effect under the action of intercommunicator.

[0018] Further, the slag pipe 17 and the stirring blade 18 are kept a distance between the edges, to prevent the stirring blade from colliding and damaging the slag pipe.

[0019] Further, the first filter tank 8 is equal in size to the clean water tank 10 and three times the size of the second filter tank 9, with a 3:1:3 ratio to increase the filtering effect of the three-stage filter tank.

[0020] Embodiment: The animal manure in the farm flows into the sand settling tank 1 through the feed inlet 2, and some impurities, sand and foreign matter are deposited at the bottom of the sand settling tank 1, and the animal manure and urine are discharged through the discharge pipeline 3 to the biogas tank 19, which contains the main tank 4 and the auxiliary tank 5 connected to each other, and after fermentation in the biogas tank, the produced biogas slurry is discharged through the discharge pipeline 6 into the first filter tank 8.

[0021] The biogas slurry and biogas liquid in the first filter tank 8 are subjected to sedimentation separation, the biogas slurry gradually sinks to the bottom, and the biogas liquid rises to the surface layer, when the liquid level reaches the height of the first water outlet pipe 11, the biogas liquid subjected to preliminary sedimentation separation is discharged through the first water outlet pipe 11 into the three-stage filter tank 7 for re-sedimentation separation, and when the height of the biogas liquid subjected to secondary separation reaches the height of the second water outlet pipe 12, the biogas liquid is filtered through the biofilm filter 13, and the clean biogas liquid is discharged through the second water outlet pipe 12 into the clean water tank 10, the three-stage filter tank 7 forms the separation of biogas slurry and biogas liquid, and the separated biogas liquid in the clean water tank 10 can be directly used for irrigation of mountains, forests, fruit trees, farmland and crops.

[0022] The mixture of biogas slurry and biogas liquid in the first filter tank 8 can form a uniform mixed suspension near the sludge pumping pipe 17 under the slow rotation of the stirring motor 16 driving the stirring blade 18, and the suspension is pumped to the dry-wet separation equipment through the sludge pumping pump 15 and the sludge pumping pipe 17, so that the biogas slurry can be processed to form organic fertilizer raw materials for processing, sale and transportation.

[0023] The biogas tank 19 adopts a 2-in-1 integrated glass steel prefabricated tank, which is convenient to transport, quick to construct, has a longer service life than traditional ones, and the size can be customized according to the size of the farm.

[0024] A 10-centimeter-thick reinforced concrete cover is placed on the sand settling tank, and a 50cm x 50cm cleaning port is reserved for easy cleaning of the sand settling tank.

[0025] It should be noted that, in the present text, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between the entities or operations.

Claims

1. A three-pool multi-stage sewage filtering device, comprising a sand settling pool (1), a biogas pool (19) and a three-stage filtering pool (7), characterized in that, The sand setting pool (1) is connected with a sand setting pool feeding port (2) on one side wall surface, the sand setting pool (1) is connected with a sand setting pool discharge pipeline (3) on the other side wall surface, the biogas pool (19) includes a main pool (4) and a sub pool (5) which are communicated with each other, the sand setting pool discharge pipeline (3) is connected to the main pool (4), the sub pool (5) is connected with a biogas pool discharge pipeline (6), a first filter pool (8), a second filter pool (9) and a clean water pool (10) are arranged in the third filter pool (7) from left to right on one side, the biogas pool discharge pipeline (6) is connected to the first filter pool (8), a rack (14) is fixedly installed on the top of the first filter pool (8), a slag pumping pump (15) and a stirring motor (16) are fixedly installed on the top wall surface of the rack (14), the slag pumping pump (15) is connected with a slag pumping pipe (17) which penetrates through the wall surface of the rack (14) and is connected to the first filter pool (8), the stirring motor (16) is connected with a stirring blade (18) which penetrates through the wall surface of the rack (14) and is connected to the first filter pool (8), a first water outlet pipe (11) is connected between the first filter pool (8) and the second filter pool (9), a second water outlet pipe (12) is connected between the second filter pool (9) and the clean water pool (10), and a biological membrane filter (13) is fixedly installed on the direction end of the second water outlet pipe (12) in the second filter pool (9).

2. A three cell multi-stage sewage filtering device according to claim 1, characterized in that, The sand setting pool feeding port (2) is located at the top end of the side wall surface of the sand setting pool (1), the sand setting pool discharge pipeline (3) is located at a lower horizontal position than the sand setting pool feeding port (2) in the sand setting pool (1), and the sand setting pool discharge pipeline (3) is located at a lower horizontal position than the sand setting pool discharge pipeline (3) in the main pool (4).

3. The three cell multi-stage sewage filtering device according to claim 1, characterized in that, The biogas pool discharge pipeline (6) is located at the top end of the side wall surface of the first filter pool (8) in the first filter pool (8), and the first water outlet pipe (11) and the second water outlet pipe (12) are located at the same horizontal position and are located at the horizontal position of the biogas pool discharge pipeline (6).

4. The three cell multi-stage sewage filtering device according to claim 1, characterized in that, The slag pumping pipe (17) and the stirring blade (18) are spaced apart from each other.

5. The three cell body multi-stage sewage filtering device according to claim 1, characterized in that, The first filter pool (8) and the clean water pool (10) have the same pool size, and the second filter pool (9) has a pool size three times that of the first filter pool (8).

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