Rural sewage treatment system

Abstract

The utility model relates to the technical field of sewage treatment, and particularly discloses a rural sewage treatment system which is characterized in that an adjusting tank is arranged on one side of an anaerobic tank, a connecting hole I is formed between the bottoms of the adjusting tank and the anaerobic tank, and a water inlet pipe head is arranged at the top of the outer side of the adjusting tank; the aerobic tank is arranged on the other side of the anaerobic tank, a strip-shaped water passing opening is formed between the tops of the aerobic tank and the anaerobic tank, a water falling plate is arranged on the inner side wall of the aerobic tank and located at the lower edge of the strip-shaped water passing opening, and biological carrier filler is supported in the aerobic tank through a bracket; the bottom end of the air draft pipe extends to the bottom of the inner cavity of the aerobic tank, and the top end of the air draft pipe vertically extends upwards; the water storage pond is connected to the rear side of the ecological filter, a water outlet pipe head is arranged on the side wall of the water storage pond, and a second connecting hole is formed between the ecological filter and the bottom of the water storage pond; the ecological floating blocks float on the water surface in the ecological filter, and plants are planted on the ecological floating blocks; the connecting pipe is connected between the aerobic tank and the ecological filter tank; the problem of poor sewage treatment effect of rural sewage treatment facilities is well solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a rural sewage treatment system. Background Art

[0002] Sewage treatment has always been a very important topic in environmental protection. Currently, the sewage in cities is transported to sewage treatment plants and recycled after being treated by various sewage treatment equipment. However, in rural areas, due to the scattered residence of households and the small number of households, there is almost no sewage treatment capacity or such equipment. Therefore, all sewage is directly discharged, which not only wastes a large amount of recyclable water resources but also causes environmental pollution. In particular, in many places, domestic sewage is directly discharged into nearby rivers, causing river pollution.

[0003] Currently, the built rural sewage treatment facilities generally include anaerobic ponds, filtration ponds, constructed wetlands or ecological filter ponds, and pipelines, etc. Sewage removes some organic matters through anaerobic hydrolysis and acidification in the anaerobic pond, and at the same time decomposes some macromolecular organic matters into easily degradable small molecular organic matters. However, the removal amount of organic matters by single anaerobic hydrolysis and acidification is limited, and the removal rate of COD is only 20% - 30%. At the same time, the treatment process emits odors, affecting the surrounding environment. In addition, the anaerobic pond has almost no treatment effect on ammonia nitrogen, and the ammonification occurring in the pond will also cause the increase of ammonia nitrogen.

[0004] Therefore, there is an urgent need for a sewage treatment system for comprehensive treatment of rural sewage to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a rural sewage treatment system to solve the problem of poor sewage treatment effect of current rural sewage treatment facilities.

[0006] To achieve the above object, the utility model provides the following technical solution: A rural sewage treatment system includes an anaerobic tank and an ecological filter tank. The regulating tank is arranged on one side of the anaerobic tank. There is a connecting hole one between the bottom of the regulating tank and the anaerobic tank. The top of the outer side of the regulating tank is provided with a water inlet pipe head. The aerobic tank is arranged on the other side of the anaerobic tank. There is a strip-shaped water passing port between the top of the aerobic tank and the anaerobic tank. A drop plate is arranged at the position of the lower edge of the strip-shaped water passing port on the inner side wall of the aerobic tank. A biological carrier filler is supported in the aerobic tank by a bracket. The bottom end of the air extraction pipe extends to the bottom of the inner cavity of the aerobic tank, and the top end of the air extraction pipe extends vertically upward. The storage tank is connected to the rear side of the ecological filter tank. The side wall of the storage tank is provided with a water outlet pipe head. There is a connecting hole two between the bottom of the ecological filter tank and the storage tank. The ecological floating block floats on the water surface in the ecological filter tank, and plants are planted on the ecological floating block. The connecting pipe is connected between the aerobic tank and the ecological filter tank.

[0007] Preferably, the pool wall of the aerobic tank is provided with a heat preservation layer.

[0008] Preferably, the air extraction pipe includes a bottom pipe sleeved on the bottom of the side wall of the aerobic tank and with the inner end extending to the center of the bottom of the inner cavity of the aerobic tank, and a vertical pipe with the bottom end connected to the outer end of the bottom pipe and extending vertically.

[0009] Preferably, the top of the aerobic tank is provided with a cover plate, and a ventilation port is arranged in the middle of the cover plate.

[0010] Preferably, the ecological filter tank and the storage tank are deeper than the aerobic tank.

[0011] Preferably, the ecological floating block further includes a floating body block, a planting basket sleeved in the middle hole of the floating body block, and positioning foam installed in the planting basket. The roots of the plants are wrapped in the positioning foam.

[0012] Preferably, the floating body block is a porous lightweight concrete block.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] A rural sewage treatment system involved in the utility model is additionally provided with an aerobic tank. The aerobic tank adopts a drop aeration method and is provided with an air extraction pipe, which strengthens the natural ventilation and oxygen supply effect in the aerobic tank, and further enhances the treatment effect on organic matter in sewage. The overall structure is compact, facilitating modular assembly and being easy to popularize and apply in rural areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic diagram of the whole of the utility model;

[0016] Figure 2 This is a three-dimensional structural schematic diagram of the ecological floating block of the present utility model.

[0017] In the figure: 1 - anaerobic pond;

[0018] 2 - regulating pond; 2.1 - inlet pipe head;

[0019] 3 - aerobic pond; 3.1 - ventilation opening;

[0020] 4 - extraction air pipe; 4.1 - bottom pipe; 4.2 - vertical pipe;

[0021] 5 - connecting hole 1;

[0022] 6 - strip-shaped water passing opening;

[0023] 7 - drop water plate;

[0024] 8 - ecological filter pond;

[0025] 9 - connecting pipe;

[0026] 10 - water storage pond; 10.1 - outlet pipe head;

[0027] 11 - ecological floating block; 11.1 - floating body block; 11.2 - planting basket; 11.3 - plant; 11.4 - positioning foam; 12 - connecting hole 2. Specific implementation manners

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figure 1-2, the present utility model provides a technical solution: a rural sewage treatment system, including an anaerobic pond 1 and an ecological filter pond 8. A regulating pond 2 is arranged on one side of the anaerobic pond 1. There is a first connecting hole 5 between the bottom of the regulating pond 2 and the anaerobic pond 1. A water inlet pipe head 2.1 is arranged at the top outside the regulating pond 2. An aerobic pond 3 is arranged on the other side of the anaerobic pond 1. There is a strip-shaped water passing opening 6 between the top of the aerobic pond 3 and the anaerobic pond 1. A water dropping plate 7 is arranged at the position of the inner side wall of the aerobic pond 3 along the lower edge of the strip-shaped water passing opening 6. Biological carrier fillers are supported in the aerobic pond 3 by brackets. The bottom end of an air extraction pipe 4 extends to the bottom of the inner cavity of the aerobic pond 3, and the top end of the air extraction pipe 4 extends vertically upward. A water storage pond 10 is connected to the rear side of the ecological filter pond 8. A water outlet pipe head 10.1 is arranged on the side wall of the water storage pond 10. There is a second connecting hole 12 between the bottom of the ecological filter pond 8 and the water storage pond 10. An ecological floating block 11 floats on the water surface in the ecological filter pond 8, and plants 11.3 are planted on the ecological floating block 11. A connecting pipe 9 is connected between the aerobic pond 3 and the ecological filter pond 8, and the ecological filter pond 8 and the water storage pond 10 are deeper than the aerobic pond 3.

[0030] Among them, a cover plate is arranged on the top of the aerobic pond 3, and a ventilation opening 3.1 is arranged in the middle of the cover plate. The air extraction pipe 4 includes a bottom pipe 4.1 sleeved on the bottom of the side wall of the aerobic pond 3 and with the inner end extending to the center of the bottom of the inner cavity of the aerobic pond 3 and a vertical pipe 4.2 with the bottom end connected to the outer end of the bottom pipe 4.1 and extending vertically. A heat preservation layer is arranged on the pool wall of the aerobic pond 3 to enhance the heat preservation effect of the pool body of the aerobic pond 3 to increase the temperature difference inside and outside the pool and strengthen the natural ventilation and oxygen supply effect. Each pool body is prefabricated and formed by concrete.

[0031] In summary, the drainage branch pipes of rural users are connected to the water inlet pipe head 2.1 through the main pipe, and the sewage is collected in the regulating pond 2, that is, the regulating pond 2 plays the role of regulating the water volume. The sewage in the regulating pond 2 first enters the anaerobic pond 1. The top of the anaerobic pond 1 is sealed with a top cover. In the anaerobic pond 1, part of the organic matter in the sewage is removed through anaerobic hydrolysis and acidification, and at the same time, some macromolecular organic matters are decomposed into easily degradable small molecular organic matters. The sewage after anaerobic hydrolysis and acidification enters the aerobic pond 3 through the strip-shaped water passing opening 6. The sewage first overflows from the strip-shaped water passing opening 6 to the water dropping plate 7, and the sewage falls into the aerobic pond 3 in the form of a waterfall. In this process, more oxygen is easily dissolved in the sewage naturally. Coupled with the natural ventilation and oxygen supply effect of the air extraction pipe 4, the removal efficiency of COD and the conversion efficiency of ammonia nitrogen in the aerobic pond 3 are improved. The sewage treated by the aerobic pond 3 further enters the ecological filter pond 8 through the connecting pipe 9 to further reduce the content of organic matter and remove nitrogen and phosphorus. Finally, the sewage after a series of treatments is stored in the water storage pond 10 for connecting pipelines through the water outlet pipe head 10.1 for irrigating farmland, vegetable fields, etc.

[0032] The ecological floating block 11 further includes a floating body block 11.1, a planting basket 11.2 sleeved in the middle hole of the floating body block 11.1, and a positioning foam 11.4 installed in the planting basket 11.2. The root of the plant 11.3 is wrapped in the positioning foam 11.4. The floating body block 11.1 is a porous lightweight concrete block. Compared with the matrix materials such as traditional constructed wetlands and ecological filter ponds, the porous lightweight concrete material has a small density, a stable pore structure and strong biocompatibility. This material has good water permeability and air permeability and a large specific surface area, which is beneficial to the growth of plants and microorganisms. In addition, the material itself has good phosphorus removal performance, which can achieve the chemical fixation of phosphorus in water, and then realize the recovery of phosphorus resources while reducing the total phosphorus emissions. This material adopts modular design, which is convenient for replacement. The replaced material can be further recycled because phosphorus is enriched on its surface, such as being used as a planting substrate for vegetables and flowers.

[0033] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0034] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rural sewage treatment system, comprising an anaerobic tank (1) and an ecological filter tank (8), characterized in that: Also includes: A regulating tank (2), the regulating tank (2) being arranged on one side of the anaerobic tank (1), a connecting hole (5) being arranged between the regulating tank (2) and the bottom of the anaerobic tank (1), and a water inlet pipe head (2.1) being arranged on the top of the outer side of the regulating tank (2); an aerobic pool (3), the aerobic pool (3) being arranged on the other side of the anaerobic pool (1), a strip-shaped water outlet (6) being arranged between the top of the aerobic pool (3) and the top of the anaerobic pool (1), a drop plate (7) being arranged on the inner side wall of the aerobic pool (3) at the position below the strip-shaped water outlet (6), and a biological carrier filler being supported by a bracket in the aerobic pool (3); An air extraction pipe (4), the bottom end of which extends to the bottom of the inner cavity of the aerobic pool (3), and the top end of which extends vertically upward; A water storage tank (10), the water storage tank (10) is connected to the rear side of the ecological filter tank (8), a water outlet pipe head (10.1) is provided on the side wall of the water storage tank (10), and a second connection hole (12) is provided between the bottom of the ecological filter tank (8) and the water storage tank (10); An ecological floating block (11), the ecological floating block (11) floats on the water surface in the ecological filter tank (8), and plants (11.3) are planted on the ecological floating block (11); A connecting pipe (9), wherein the connecting pipe (9) is connected between the aerobic tank (3) and the ecological filter tank (8).

2. A rural sewage treatment system according to claim 1, characterized in that: The pool wall of the aerobic pool (3) is provided with a heat-insulating layer.

3. A rural sewage treatment system according to claim 1, characterized in that: The extraction pipe (4) comprises a bottom pipe (4.1) which is sleeved on the bottom of the side wall of the aerobic pool (3) and whose inner end extends to the center of the bottom of the inner cavity of the aerobic pool (3), and a vertical pipe (4.2) whose bottom end is connected to the outer end of the bottom pipe (4.1) and extends vertically.

4. A rural sewage treatment system according to claim 1, characterized in that: The top of the aerobic pool (3) is provided with a cover plate, and the middle of the cover plate is provided with a vent (3.1).

5. A rural sewage treatment system according to claim 1, characterized in that: The ecological filter tank (8) and the water storage tank (10) are deeper than the aerobic tank (3).

6. A rural sewage treatment system according to claim 1, characterized in that: The ecological floating block (11) further comprises a floating block (11.1), a planting basket (11.2) mounted in a hole in the middle of the floating block (11.1), and a positioning foam (11.4) installed in the planting basket (11.2), wherein the roots of the plants (11.3) are wrapped in the positioning foam (11.4).

7. A rural sewage treatment system according to claim 6, characterized in that: The floating body block (11.1) is a porous lightweight concrete block.

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