Natural ventilation sewage recycling equipment

Abstract

The utility model discloses sewage recycling equipment for natural ventilation, and relates to the technical field of sewage treatment. The device comprises a four-grid septic tank and a deodorization inspection well, the deodorization inspection well is provided with a water inlet and a water outlet, the water inlet is connected with a drainage pipeline of a farmer, and the water outlet is connected to the four-grid septic tank through a pipeline; the four-grid septic tank comprises a first chamber, a second chamber, a third chamber and a fourth chamber which are communicated in sequence, a ventilation pipe is arranged above the first chamber, an unpowered hood is fixed at the top of the ventilation pipe, the fourth chamber is connected with a water outlet pipe, and the water outlet pipe extends to a vegetable garden / forest land irrigation area. According to the utility model, the four-grid septic tank is used for carrying out segmented treatment and step-by-step degradation on domestic sewage, and respectively carrying out preliminary precipitation, anaerobic fermentation, biodegradation and final clarification and filtration, so that the effective removal of BOD, COD, ammonia nitrogen and suspended solids is ensured; and the removal effect of the refractory organic matters is further enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, and in particular relates to a wastewater resource recovery device with natural ventilation. Background Technology

[0002] With the acceleration of urban-rural integration and the advancement of ecological civilization construction in my country, the treatment of domestic sewage in rural areas has become an important task for improving the living environment and enhancing the ecological quality of rural areas.

[0003] Traditional domestic sewage treatment facilities often employ three-compartment septic tanks, which can achieve preliminary degradation and sedimentation separation of pollutants to some extent. However, their treatment efficiency is limited, and the effluent quality is unstable, making it difficult to meet increasingly stringent environmental protection requirements. Furthermore, traditional septic tanks typically lack ventilation and exhaust designs, allowing gases such as biogas and hydrogen sulfide produced during anaerobic fermentation to accumulate and emit odors, affecting surrounding air quality. Additionally, some facilities lack effective odor backflow prevention structures, leading to situations where odors flow back into indoor spaces. Regarding resource utilization, most existing equipment is limited to primary treatment and fails to effectively achieve sewage reuse. Meanwhile, the development of information technology and intelligent systems has promoted the construction of smart water management systems, but in rural areas, few sewage treatment devices are equipped with real-time water quality monitoring capabilities. The lack of remote monitoring methods makes it difficult to promptly grasp the operational status and water quality changes, posing challenges for subsequent operation and maintenance.

[0004] To address these issues, we provide a wastewater resource recovery device with natural ventilation to solve the aforementioned problems. Utility Model Content

[0005] The purpose of this utility model is to provide a wastewater resource recovery device with natural ventilation and air exchange. It treats and degrades domestic sewage in stages through a four-compartment septic tank, which performs preliminary sedimentation, anaerobic fermentation, biodegradation and final clarification filtration. The treated water is then used for agricultural irrigation. The device is also equipped with a sensor module for intelligent monitoring of drainage, which solves the problem of insufficient functionality of existing domestic sewage treatment facilities.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a wastewater resource recovery device with natural ventilation, comprising a four-compartment septic tank and an odor-proof inspection well located between the four-compartment septic tank and the farmer's residence. The odor-proof inspection well has an inlet and an outlet. The inlet is connected to the farmer's drainage pipe, and the outlet is connected to the four-compartment septic tank via a pipe. The four-compartment septic tank comprises a first chamber, a second chamber, a third chamber, and a fourth chamber connected in sequence. Each chamber is separated by a partition. The partition has water passage holes for wastewater to flow from the first chamber to the fourth chamber. The first chamber has an inlet pipe at its upper part, which is connected to the outlet of the odor-proof inspection well. A ventilation pipe is located above the first chamber, extending above the ground. A non-powered vent cap is fixed to the top of the ventilation pipe. The fourth chamber is connected to an outlet pipe, which extends to the irrigation area of ​​the vegetable garden / woodland.

[0008] The present invention is further configured such that each chamber of the odor-proof inspection well and the top of each chamber of the four-compartment septic tank is provided with an inspection port, and a water trap is provided between the inlet and outlet of the odor-proof inspection well.

[0009] The present invention is further provided that the top of the non-powered windproof hood is provided with a rain cover, and the rain cover is a hollow mesh structure.

[0010] The present invention is further configured such that the fourth chamber contains a sensor module, and the sensor module is connected to a remote control terminal via a connecting line.

[0011] The present invention is further configured such that a filter cover is provided on the top of the fourth chamber, and the filter cover is located outside the inner end of the water outlet pipe, and a sand filter layer is distributed around the filter cover.

[0012] The present invention is further configured such that biological beds are arranged in parallel within the third chamber, and the biological beds contain microbial growth packing material.

[0013] This utility model has the following beneficial effects:

[0014] 1. This utility model utilizes a four-compartment septic tank for segmented treatment and step-by-step degradation of domestic sewage, performing preliminary sedimentation, anaerobic fermentation, biodegradation, and final clarification filtration to ensure effective removal of BOD, COD, ammonia nitrogen, and suspended solids. Furthermore, the inclusion of a biological bed with microbial growth packing further enhances the removal of recalcitrant organic matter. The non-powered natural ventilation design leverages wind power to generate suction, reducing operating energy consumption and effectively expelling harmful gases. Combined with the odor-proof structure of the water trap, it significantly improves environmental performance and the quality of the living environment.

[0015] 2. This utility model realizes the resource utilization and ecological cycle of sewage. The treated water is used for agricultural irrigation, which not only saves freshwater resources, but also provides natural fertilizer for crops and promotes the sustainable development of rural areas. The sensor module provides an intelligent water quality monitoring system for the four-compartment septic tank, making equipment management more convenient and efficient, realizing remote monitoring and early warning, and ensuring that the quality of the effluent meets the standards. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the installation of a wastewater resource recovery device with natural ventilation.

[0018] Figure 2 This is a schematic diagram of the internal structure of a four-compartment septic tank, a wastewater resource recovery device with natural ventilation.

[0019] Figure 3 This is a side view of a four-compartment septic tank, a wastewater resource recovery device with natural ventilation.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 100. Four-compartment septic tank; 101. First chamber; 101a. Inlet pipe; 101b. Ventilation pipe; 102. Second chamber; 103. Third chamber; 103a. Biological bed; 104. Fourth chamber; 104a. Outlet pipe; 104b. Sensor module; 104c. Filter cover; 105. Partition; 200. Odor-proof inspection well; 201. Inlet; 202. Outlet; 203. Inspection port; 204. Water trap; 300. Non-powered vent cap; 301. Rain cover. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Example

[0024] Please see Figure 1-3This utility model relates to a wastewater resource recovery device with natural ventilation, comprising a four-compartment septic tank 100 and an odor-proof inspection well 200 disposed between the four-compartment septic tank 100 and a farmer's house; the odor-proof inspection well 200 is provided with an inlet 201 and an outlet 202, the inlet 201 being connected to the farmer's drainage pipe, and the outlet 202 being connected to the four-compartment septic tank 100 via a pipe; the four-compartment septic tank 100 includes a first chamber 101, a second chamber 102, a third chamber 103, and a fourth chamber 104 connected in sequence, each chamber being separated by a partition 105, the partition 105 being provided with a mechanism for wastewater to flow sequentially from the first chamber 101 to the fourth chamber 104. The water passage at 04 enables the step-by-step degradation of pollutants, improving treatment efficiency. The upper part of the first chamber 101 is provided with a water inlet pipe 101a, which is connected to the water outlet 202 of the odor-proof inspection well 200. A ventilation pipe 101b is provided above the first chamber 101, extending above the ground. A non-powered wind cap 300 is fixed at the top of the ventilation pipe 101b. The non-powered wind cap 300 generates suction force with the help of wind to enhance ventilation. The fourth chamber 104 is connected to a water outlet pipe 104a, which extends to the vegetable garden / woodland irrigation area, so that the treated water can be used for agricultural irrigation, realizing wastewater reuse.

[0025] The first chamber 101 serves as the first treatment unit after sewage enters the four-compartment septic tank 100. It is primarily responsible for preliminary sedimentation and anaerobic fermentation. The inlet pipe 101a introduces sewage from the odor-proof inspection well 200 into this chamber, where large suspended particles settle to form a sludge layer. Simultaneously, the organic matter in the sewage begins preliminary anaerobic decomposition in an oxygen-deficient environment. A ventilation pipe 101b, equipped with a non-powered vent cap 300, is installed above to discharge generated gases (such as methane and carbon dioxide), reducing odor and promoting internal air circulation. The second chamber 102 receives a portion of the treated sewage flowing into the first chamber 101 through the water passage, further deepening the anaerobic digestion process. In this stage, the remaining organic matter in the sewage continues to be decomposed by microorganisms, the sludge is further stabilized, and more fine suspended particles settle. The function of the second chamber 102 is to ensure that the sewage undergoes sufficient anaerobic treatment before entering the next stage. The third chamber 103 has parallel distribution... The biological beds 103a are equipped with microbial growth packing materials to provide an environment for microorganisms to attach and grow. The biological beds 103a are designed to support the further degradation of organic pollutants in wastewater by microorganisms under aerobic or facultative aerobic conditions, especially for recalcitrant organic matter and nutrients such as ammonia nitrogen. This chamber helps improve effluent quality and reduce BOD (biochemical oxygen demand) and COD (chemical oxygen demand) levels. The fourth chamber 104 is the last treatment stage in the entire system, used for final clarification and filtration. A sensor module 104b is installed in this chamber, which can be connected to a remote control terminal via a connecting cable to monitor water quality in real time and ensure that the effluent quality meets the standards. The effluent pipe 104a is located at the bottom of the fourth chamber 104 and extends to the vegetable garden / woodland irrigation area, allowing the treated water to be used directly for agricultural irrigation. A filter cover 104c is installed on the top, with a sand filter layer distributed around it, which can effectively remove residual suspended solids and prevent blockage of the irrigation system pipes.

[0026] In summary, these four chambers each undertake different wastewater treatment tasks, from preliminary sedimentation and anaerobic fermentation to biological treatment and finally clarification and filtration, forming a complete wastewater treatment chain that achieves effective purification and resource utilization of wastewater.

[0027] Specifically, the fourth chamber 104 has a built-in sensor module 104b that monitors water quality parameters (such as pH, turbidity, conductivity, etc.) in real time to achieve intelligent management. The sensor module 104b is connected to a remote control terminal via a connecting cable. A filter cover 104c is installed on the top of the fourth chamber 104 and is located outside the inner end of the outlet pipe 104a. A sand filter layer is distributed around the filter cover 104c to further remove residual suspended solids and prevent clogging of the irrigation system. A biological bed 103a is distributed in parallel in the third chamber 103. The biological bed 103a contains microbial growth packing material. Under ventilation conditions, microorganisms attach to the surface of the packing material and efficiently degrade organic matter. The biological bed 103a provides a large specific surface area, which is conducive to biofilm formation, improves treatment efficiency, and significantly removes pollutants such as COD, BOD, and ammonia nitrogen.

[0028] Furthermore, each chamber of the odor-proof inspection well 200 and the four-compartment septic tank 100 is equipped with an inspection port 203 at the top, which facilitates regular sludge removal and maintenance to ensure unobstructed pipe flow. A water trap 204 is provided between the inlet 201 and outlet 202 of the odor-proof inspection well 200. The water trap 204 acts as a water seal structure to prevent the odor generated in the septic tank from backflowing into the room. The top of the non-powered vent 300 is equipped with a rain cover 301, which has a perforated mesh structure to prevent rainwater backflow while maintaining good ventilation performance.

[0029] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A wastewater resource recovery device with natural ventilation, comprising a four-compartment septic tank (100) and an odor-proof inspection well (200) disposed between the four-compartment septic tank (100) and the farmer's residence; characterized in that: The odor-proof inspection well (200) is provided with an inlet (201) and an outlet (202). The inlet (201) is connected to the farmer's drainage pipe, and the outlet (202) is connected to the four-compartment septic tank (100) through a pipe. The four-compartment septic tank (100) includes a first chamber (101), a second chamber (102), a third chamber (103), and a fourth chamber (104) connected in sequence. Each chamber is separated by a partition (105). The partition (105) is provided with a mechanism for sewage to flow sequentially from the first chamber (101) to the fourth chamber (104). The first chamber (101) has a water passage hole, and the upper part of the first chamber (101) is provided with a water inlet pipe (101a). The water inlet pipe (101a) is connected to the water outlet (202) of the odor prevention inspection well (200). A ventilation pipe (101b) is provided above the first chamber (101). The ventilation pipe (101b) extends to above the ground, and a non-powered wind cap (300) is fixed on the top of the ventilation pipe (101b). The fourth chamber (104) is connected with a water outlet pipe (104a), and the water outlet pipe (104a) extends to the vegetable garden / woodland irrigation area.

2. The natural draft ventilation and sewage resource utilization device according to claim 1, characterized in that, The odor-proof inspection well (200) and the top of each chamber of the four-compartment septic tank (100) are provided with inspection ports (203), and a water trap (204) is provided between the inlet (201) and outlet (202) of the odor-proof inspection well (200).

3. The natural draft ventilation and sewage resource utilization device according to claim 1, characterized in that, The top of the non-powered windproof hood (300) is provided with a rain cover (301), and the rain cover (301) is a hollow mesh structure.

4. The natural draft ventilation and sewage resource utilization device according to claim 1, characterized in that, The fourth chamber (104) houses a sensor module (104b), which is connected to a remote control terminal via a connecting cable.

5. The natural draft ventilation apparatus for sewage resource recovery according to claim 1, characterized in that, The top of the fourth chamber (104) is provided with a filter cover (104c), and the filter cover (104c) is located outside the inner end of the water outlet pipe (104a), and a sand filter layer is distributed around the filter cover (104c).

6. A wastewater resource recovery device with natural ventilation according to claim 1, characterized in that, The third chamber (103) contains parallel biological beds (103a), which are filled with microbial growth packing material.

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