Resourceful treatment device for domestic sewage

Abstract

The utility model belongs to the technical field of domestic sewage treatment devices, and particularly relates to a domestic sewage resourceful treatment device which is characterized in that an anaerobic zone, an anoxic zone and an aerobic zone are sequentially formed in an anaerobic-anoxic-aerobic reaction tank from bottom to top, and sewage sequentially enters the anaerobic zone, the anoxic zone and the aerobic zone from a sewage collection tank; part of organic matters are ammoniated while phosphorus is released through anaerobic reaction balls, denitrification treatment is performed in the anoxic zone, BOD removal, nitrification and phosphorus absorption are realized through floating filler in the aerobic zone, and finally treated water subjected to denitrification and dephosphorization is separated out through a solid-liquid separator, so that sewage treatment is completed. According to the utility model, a complete A2 / O (anaerobic-anoxic-aerobic) process is realized in one reaction tank, the occupied area of the sewage treatment device is reduced, the construction cost is greatly reduced, and the popularization of the rural domestic sewage resourceful treatment device is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of domestic sewage treatment devices, and in particular relates to a domestic sewage resource treatment device. Background Art

[0002] Rural sewage treatment devices have been gradually promoted and applied in some areas, including domestic sewage treatment devices, rural toilet sewage treatment devices, etc. These miniaturized devices can effectively solve the problem of rural sewage treatment and improve the level of rural sewage treatment. As the most widely used denitrification and phosphorus removal process, A 2 The anaerobic-anoxic-aerobic (A / O) process has been widely used in rural domestic sewage treatment. For example, the Chinese utility model with publication number CN219546808U provides a rural domestic sewage treatment system, which is set in the residential area of ​​rural areas, including an anaerobic reaction tank, an aerobic reaction tank, an anoxic reaction tank and an artificial wetland connected in sequence by pipelines, which can effectively solve the problem of scattered and disorderly discharge of rural domestic sewage, improve the rural sanitary environment and the overall living environment, and realize the purification and resource reuse of rural domestic sewage, which helps to solve the problem of water shortage in rural areas. However, this sewage treatment device still needs to set up independent anaerobic reaction tanks, aerobic reaction tanks and anoxic reaction tanks respectively, which occupies a large area, resulting in high construction and maintenance costs, which is not conducive to large-scale promotion. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects in the prior art that the domestic sewage treatment device needs to be equipped with multiple reaction tanks, resulting in a large footprint and high cost, thereby providing a resource treatment device for domestic sewage, the effluent of which can be used for rural irrigation of farmland and surrounding small vegetable gardens, thereby realizing water resource utilization.

[0004] A domestic sewage resource treatment device comprises a sewage collection tank, an anaerobic-anoxic-aerobic reaction tank and a solid-liquid separator; the anaerobic-anoxic-aerobic reaction tank forms an anaerobic zone, an anoxic zone and an aerobic zone from bottom to top in sequence; an anaerobic reaction ball and a water inlet pipe are arranged in the anaerobic zone, anaerobic microorganisms are attached to the anaerobic reaction ball, at least one anaerobic reaction ball is fixed on the water inlet pipe, the water inlet end of the water inlet pipe is located in the sewage collection tank, and the water outlet end is located in the anaerobic reaction ball; anoxic microorganisms are arranged in the anoxic zone; the upper side of the aerobic zone is exposed to the air, and a floating filler is placed, and aerobic microorganisms are attached to the floating filler; the input end of the solid-liquid separator is located in the aerobic zone, and has a solid output end and a liquid output end.

[0005] Furthermore, the solid output end of the solid-liquid separator is located in the anaerobic-anoxic-aerobic reaction tank.

[0006] Furthermore, it also includes a mud discharge device, which is located at the bottom of the anaerobic-anoxic-aerobic reaction tank.

[0007] Furthermore, it also includes a disinfection device, the input end of the disinfection device is connected to the liquid output end of the solid-liquid separator.

[0008] Furthermore, it also includes an osmotic adsorption device, which includes an inner tube and an outer tube, wherein a plurality of through holes are provided on the inner tube and the outer tube, the outer tube is sleeved outside the inner tube, biological ceramsite is arranged between the inner tube and the outer tube, and the output end of the disinfection device is connected to the inner tube.

[0009] Furthermore, the floating filler is one or more of plastic foam, EPE pearl cotton, pearl sand, wood ash, activated carbon and diatomaceous earth.

[0010] Furthermore, it also includes an aeration device for aerating the aerobic zone.

[0011] Furthermore, the anaerobic reaction ball includes a hollow inner spherical shell and an outer spherical shell, the inner spherical shell is located inside the outer spherical shell and fixed to the outer spherical shell; the anaerobic microorganisms are located inside the inner spherical shell, and the water outlet end of the water inlet pipe is located inside the inner spherical shell; the pores of the outer spherical shell are larger than the pores of the inner spherical shell.

[0012] Furthermore, it also includes a photovoltaic component, which is fixed on the top of the processing device and is used to provide electrical energy for the processing device.

[0013] Beneficial effects: The utility model discloses a domestic sewage resource treatment device, in which an anaerobic zone, anoxic zone and aerobic zone are formed from bottom to top in an anaerobic-anoxic-aerobic reaction tank. Sewage enters the anaerobic zone, anoxic zone and aerobic zone in turn from the sewage collection tank, releases phosphorus through anaerobic anaerobic reaction balls and ammonifies part of organic matter, performs denitrification in the anoxic zone, removes BOD, nitrifies and absorbs phosphorus through floating fillers in the aerobic zone, and finally separates the treated water after denitrification and dephosphorization through a solid-liquid separator to complete sewage treatment. The utility model realizes complete A in one reaction tank. 2 / O (anaerobic-anoxic-aerobic) process reduces the footprint of sewage treatment equipment, significantly reduces construction costs, and is conducive to the large-scale promotion of domestic sewage treatment equipment.

[0014] The utility model uses a designed photovoltaic module, a collection tank, a biochemical reaction tank (anaerobic reaction ball, anoxic tank, aerobic tank and aeration system), a solid-liquid separator and an effluent infiltration system to purify sewage using a biofilm method, effectively degrading organic matter, removing suspended matter and soluble substances, and ensuring that sewage is effectively purified. In addition, compared with conventional treatment facilities, the integrated reactor occupies a smaller area and can save land resources. At the same time, by using solar panels to convert light energy into electrical energy and supplying it to the reactor, resource and cost savings are achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic structural diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the permeation adsorption device of the utility model.

[0019] Explanation of the reference numerals: 1. sewage collection tank; 21. water inlet pipe; 22. anaerobic reaction ball; 23. floating filler; 3. solid-liquid separator; 4. photovoltaic module; 51. inner tube; 52. outer tube; 53. biological ceramsite. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0021] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0023] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0025] Reference Figure 1 and Figure 2As shown, this embodiment provides a resource treatment device for domestic sewage, including a sewage collection tank 1, an anaerobic-anoxic-aerobic reaction tank and a solid-liquid separator 3; the anaerobic-anoxic-aerobic reaction tank forms an anaerobic zone, an anoxic zone and an aerobic zone from bottom to top in sequence; an anaerobic reaction ball 22 and a water inlet pipe 21 are arranged in the anaerobic zone, anaerobic microorganisms are attached to the anaerobic reaction ball 22, at least one anaerobic reaction ball 22 is fixed on the water inlet pipe 21, the water inlet end of the water inlet pipe 21 is located in the sewage collection tank 1, and the water outlet end is located in the anaerobic reaction ball 22; anoxic microorganisms are arranged in the anoxic zone; the upper side of the aerobic zone is exposed to the air, and a floating filler 23 is placed, and aerobic microorganisms are attached to the floating filler 23; the input end of the solid-liquid separator 3 is located in the aerobic zone, and has a solid output end and a liquid output end.

[0026] The present embodiment provides a domestic sewage resource treatment device, in which an anaerobic zone, anoxic zone and aerobic zone are formed from bottom to top in an anaerobic-anoxic-aerobic reaction tank. Sewage enters the anaerobic zone, anoxic zone and aerobic zone in turn from the sewage collection tank 1, releases phosphorus through the anaerobic anaerobic reaction balls 22 and ammonifies part of the organic matter, performs denitrification in the anoxic zone, removes BOD, nitrifies and absorbs phosphorus through the floating filler 23 in the aerobic zone, and finally separates the treated water after denitrification and dephosphorization through the solid-liquid separator 3 to complete sewage treatment. The utility model realizes a complete A in a reaction tank. 2 / O (anaerobic-anoxic-aerobic) process reduces the footprint of sewage treatment equipment, significantly reduces construction costs, and is conducive to the large-scale promotion of domestic sewage treatment equipment.

[0027] Specifically, the sewage in the sewage collection tank 1 undergoes preliminary anaerobic digestion, the fecal waste is decomposed at the bottom of the tank, the upper sewage enters the water inlet pipe 21 and flows into the anaerobic-anoxic-aerobic reaction tank, and the solidified objects are fully hydrolyzed in the sewage collection tank 1, thereby preventing the pipe from being blocked. In this embodiment, the water inlet pipe is made of PVC.

[0028] The anaerobic reaction ball 22 includes a hollow inner spherical shell and an outer spherical shell, wherein the inner spherical shell is located inside the outer spherical shell and fixed to the outer spherical shell; the anaerobic microorganisms are located inside the inner spherical shell, and the outlet end of the water inlet pipe 21 is located inside the inner spherical shell; the pores of the outer spherical shell are larger than the pores of the inner spherical shell. As the anaerobic microorganisms grow inside the inner spherical shell, due to the small porosity of the inner spherical shell, an environment close to a confined space is formed inside the inner spherical shell, forming an anaerobic environment, and at the same time, the growth and shedding cycles of the microorganisms are carried out, ensuring a continuous anaerobic environment inside the inner spherical shell. A stable anaerobic environment is formed inside the anaerobic reaction ball 22, which promotes the massive reproduction of anaerobic microorganisms and the formation of dense microbial communities, thereby significantly improving the enrichment of anaerobic microorganisms. This not only enhances the ability of microorganisms to degrade pollutants, but also improves the efficiency of the treatment process. In the anaerobic reaction ball 22, the complex organic matter in the sewage is initially decomposed by the action of microorganisms, creating favorable conditions for the subsequent aerobic treatment process, effectively converting macromolecular organic matter into small molecular substances, and laying the foundation for the subsequent biodegradation process. As a preferred embodiment of this embodiment, the anaerobic reaction ball 22 is made of stainless steel.

[0029] The floating filler 23 is one or more of plastic foam, EPE pearl cotton, pearl sand, plant ash, activated carbon and diatomaceous earth. The floating filler 23 can provide abundant surface area and attachment surface, providing an ideal environment for microorganisms to grow and attach. Through the floating filler 23, microorganisms are enriched on its surface to form a biofilm, thereby increasing the population density of microorganisms and improving the sewage treatment efficiency. Compared with traditional fixed fillers, the floating filler 23 is not prone to fouling and blocking problems, and no backwashing operation is required. When the microorganisms on the floating filler 23 fall off, the filler will automatically float up, avoiding the occurrence of fouling, eliminating the cumbersome backwashing process, and realizing the automatic recycling of the filler. In the aerobic floating biofilter process section, the biofilm thickness is adjusted by microbial population regulation technology to form a concentration gradient with high surface dissolved oxygen and low inner dissolved oxygen, creating different dissolved oxygen environments, providing necessary conditions for simultaneous nitrification and denitrification, and realizing the simultaneous nitrification and denitrification process, thereby shortening the reaction time, reducing the reactor volume, and improving the removal efficiency of ammonia nitrogen and total nitrogen.

[0030] The aeration device is also included, which is used to aerate the aerobic zone. By injecting air into the aerobic zone, an aerobic environment is formed to promote the growth and metabolic activities of microorganisms, thereby increasing the reaction rate, effectively degrading organic matter and removing nutrients such as nitrogen and phosphorus in sewage.

[0031] It also includes a mud discharge device, which is located at the bottom of the anaerobic-anoxic-aerobic reaction tank. The solid output end of the solid-liquid separator 3 is located in the anaerobic-anoxic-aerobic reaction tank. The solid output end of the solid-liquid separator 3 is located in the anaerobic-anoxic-aerobic reaction tank, so that the separated solids fall into the bottom of the anaerobic-anoxic-aerobic reaction tank and are processed by the mud discharge device. It also includes a disinfection device, the input end of the disinfection device is connected to the liquid output end of the solid-liquid separator 3, and the solid-liquid separator 3 also has the function of intercepting aerobic suspended fillers and sludge.

[0032] Reference Figure 3 As shown, as a further improvement of this embodiment, an osmotic adsorption device is also included, the osmotic adsorption device includes an inner tube 51 and an outer tube 52, a plurality of through holes are opened on the inner tube 51 and the outer tube 52, the outer tube 52 is sleeved outside the inner tube 51, a biological ceramsite 53 is arranged between the inner tube 51 and the outer tube 52, and the output end of the disinfection device is connected to the inner tube 51. Specifically, a DN100 PVC inner tube 51 is sleeved inside a DN250 PVC outer tube 52, a through hole with a diameter of 5 mm is opened every 30 mm on the surface of the inner tube 51 and the outer tube 52, the biological ceramsite 53 adsorption material can efficiently remove nitrogen, phosphorus and other harmful substances remaining in the effluent water, and the adsorption material between the two pipes realizes the osmotic adsorption effect of the effluent water.

[0033] As a further improvement of this embodiment, a photovoltaic module 4 is also included, and the photovoltaic module 4 is fixed on the top of the treatment device to provide electrical energy for the treatment device. In this embodiment, the photovoltaic module 4 provides electrical energy for the aeration device and the flow of sewage in each device. Specifically, the photovoltaic module 4 includes a photovoltaic panel and a battery fixed on the top of the treatment device, which reduces the operating cost of the device and solves the power outage problem to a certain extent. The photovoltaic module 4 enables the treatment device to operate normally without an external power supply, further ensuring the stability and sustainability of the equipment.

[0034] Working principle: In A 2 / O The activated sludge of the biological denitrification and phosphorus removal system contains microbial groups such as nitrifying bacteria, denitrifying bacteria and polyphosphate bacteria. In the anaerobic zone of the device, polyphosphate bacteria release phosphorus and absorb easily degradable organic matter, such as low-level fatty acids. In the anoxic zone of the device, denitrifying bacteria convert the refluxed nitrate into nitrogen gas through the biological denitrification process to achieve the denitrification effect. In the aerobic zone of the device, nitrifying bacteria ammine the ammonia nitrogen and organic nitrogen in the sewage into ammonia nitrogen, and convert it into nitrate through biological nitrification. At the same time, polyphosphate bacteria also absorb phosphorus in excess and remove phosphorus from the system by discharging excess sludge. A 2The / O process can simultaneously complete the functions of organic matter removal, nitrification and denitrification, and the intake and removal of excess phosphorus. The aerobic tank can achieve complete nitrification of nitrate nitrogen, which is the prerequisite for the anoxic tank to complete the denitrification function. The anaerobic tank and the aerobic tank together complete the phosphorus removal function.

[0035] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A domestic sewage resource treatment device, characterized in that: It comprises a sewage collection tank, an anaerobic-anoxic-aerobic reaction tank and a solid-liquid separator; the anaerobic-anoxic-aerobic reaction tank forms an anaerobic zone, an anoxic zone and an aerobic zone in sequence from bottom to top; an anaerobic reaction ball and a water inlet pipe are arranged in the anaerobic zone, anaerobic microorganisms are attached to the anaerobic reaction ball, at least one anaerobic reaction ball is fixed on the water inlet pipe, the water inlet end of the water inlet pipe is located in the sewage collection tank, and the water outlet end is located in the anaerobic reaction ball; anoxic microorganisms are arranged in the anoxic zone; the upper side of the aerobic zone is exposed to the air, and a floating filler is placed, and aerobic microorganisms are attached to the floating filler; the input end of the solid-liquid separator is located in the aerobic zone, and has a solid output end and a liquid output end.

2. A domestic sewage resource treatment device according to claim 1, characterized in that: The solid output end of the solid-liquid separator is located in the anaerobic-anoxic-aerobic reaction tank.

3. The domestic sewage resource treatment device according to claim 1 is characterized in that: It also includes a mud discharge device, which is located at the bottom of the anaerobic-anoxic-aerobic reaction tank.

4. The domestic sewage resource treatment device according to claim 1 is characterized in that: It also includes a disinfection device, the input end of which is connected to the liquid output end of the solid-liquid separator.

5. The domestic sewage resource treatment device according to claim 4 is characterized in that: It also includes an osmotic adsorption device, which includes an inner tube and an outer tube. The inner tube and the outer tube are provided with a plurality of through holes. The outer tube is sleeved outside the inner tube. Biological ceramsite is arranged between the inner tube and the outer tube. The output end of the disinfection device is connected to the inner tube.

6. The domestic sewage resource treatment device according to claim 1, characterized in that: The floating filler is one or more of plastic foam, EPE pearl cotton, pearl sand, plant ash, activated carbon and diatomaceous earth.

7. The domestic sewage resource treatment device according to claim 1 is characterized in that: Also included is an aeration device for aerating the aerobic zone.

8. The domestic sewage resource treatment device according to claim 1, characterized in that: The anaerobic reaction ball comprises a hollow inner spherical shell and an outer spherical shell, wherein the inner spherical shell is located inside the outer spherical shell and is fixed to the outer spherical shell; the anaerobic microorganisms are located inside the inner spherical shell, and the water outlet end of the water inlet pipe is located inside the inner spherical shell; the pores of the outer spherical shell are larger than the pores of the inner spherical shell.

9. The domestic sewage resource treatment device according to claim 1, characterized in that: It also includes a photovoltaic component, which is fixed on the top of the processing device and is used to provide electrical energy for the processing device.

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