Low-temperature quality-divided treatment device for domestic sewage of villages and towns

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a low-temperature quality-divided treatment device for domestic sewage in villages and towns, which comprises a quality-divided box, the interior of the quality-divided box is divided into a black water cavity and a grey water cavity, water inlet pipes with pumps are arranged on the upper side walls of the black water cavity and the grey water cavity, a heating pipe is arranged on the side wall of the black water cavity, and a water outlet pipe is arranged on the side wall of the grey water cavity. An air outlet pipe is arranged at one end of the side wall of the black water cavity, a control valve assembly is arranged on the air outlet pipe, a filtering assembly is arranged on the upper side wall of the grey water cavity, the upper end of the filtering assembly is connected with the water inlet pipe, a connecting pipe is arranged on one side wall of the grey water cavity, and a purifying box is arranged at one end of the connecting pipe; a purifying assembly is arranged in the purifying box, a water outlet pipe is arranged at one end of the purifying box, the filtering assembly comprises a fixing box and a sundry drawer, the purifying assembly comprises a rotating motor, a rotating rod and purifying blades, and meanwhile collaborative recycling of organic energy (biogas) and recycled water is achieved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically a low-temperature separation treatment device for rural domestic wastewater. Background Technology

[0002] As we all know, with the ongoing construction of new rural areas, the treatment of domestic sewage in villages and towns has become a key link in improving the living environment and realizing ecological revitalization. However, due to factors such as climate conditions, technology adaptability and operation and maintenance costs, existing village and town sewage treatment technologies generally have systemic defects when dealing with low-temperature environments.

[0003] Specifically, existing village and town sewage treatment facilities do not effectively separate black water (fecal sewage) from grey water (washing wastewater) during use. This results in an imbalance in the carbon-nitrogen ratio when high-concentration organic black water is mixed with low-pollution grey water. In addition, the lack of insulation devices leads to a decrease in the removal rate of COD (chemical oxygen demand) and ammonia nitrogen under low-temperature conditions, resulting in serious exceedances of effluent quality standards. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a low-temperature separation treatment device for rural domestic sewage.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a low-temperature separation treatment device for rural domestic sewage, comprising a separation tank, which is divided into a black water chamber and a grey water chamber. Both the black water chamber and the grey water chamber have inlet pipes with pumps installed on their upper side walls. A heating pipe is installed on the side wall of the black water chamber, and an air outlet pipe is installed at one end of the side wall of the black water chamber. A control valve assembly is installed on the air outlet pipe. A filter assembly is installed on the upper side wall of the grey water chamber, and the upper end of the filter assembly is connected to the inlet pipe. A connecting pipe is installed on one side wall of the grey water chamber, and a purification tank is installed at one end of the connecting pipe. A purification assembly is installed inside the purification tank, and an outlet pipe is installed at one end of the purification tank.

[0008] To achieve rapid removal of solid debris from grey water, the present invention improves upon the following: the filter assembly includes a fixed box and a debris drawer; the fixed box connects the grey water chamber to the water inlet pipe; and the debris drawer is located inside the fixed box and detachably connected to it.

[0009] To improve the contact efficiency between greywater and purification materials, the present invention includes the following improvements: the purification component includes a rotating motor, a rotating rod, and purification blades; the rotating motor is located on one side wall of the purification chamber; the rotating rod passes through the purification chamber; and the purification blades are located around the rotating rod and are adapted to the purification chamber.

[0010] To automatically adjust the gas discharge pressure, the present invention includes the following improvement: a flow monitor is installed on the gas outlet pipe, and the flow monitor is signal-connected to the control valve.

[0011] To precisely adjust the opening of the air outlet pipe, this utility model improves upon the following: the control valve assembly includes a sealing plate, a control motor, and an adjusting rod; the control motor is located at the upper end of the air outlet pipe; the adjusting rod passes through the air outlet pipe and is connected to the output end of the control motor; and the sealing plate is located on the adjusting rod and is sealed to the air outlet pipe.

[0012] To provide real-time feedback on biogas composition, this invention includes the following improvement: a gas concentration monitor is installed inside the black water chamber.

[0013] To reduce heat loss, the present invention is improved as follows: the outer walls of the separation tank and the water inlet pipe are both covered with polyurethane insulation layer, and the side wall of the grey water chamber is provided with a double-layer insulation interlayer, which is filled with phase change heat storage material.

[0014] To block heat conduction between the black water chamber and the grey water chamber, the present invention is improved by providing a vacuum insulation plate between the black water chamber and the grey water chamber.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a low-temperature separation treatment device for rural domestic sewage, which has the following beneficial effects:

[0017] The low-temperature separation treatment device for domestic sewage in this village is equipped with a separation chamber that completely isolates black water (high-concentration organic wastewater) and grey water (low-pollution washing wastewater) for treatment. This avoids the problem of the carbon-nitrogen ratio imbalance in mixed sewage inhibiting microbial activity. The black water chamber independently carries out anaerobic fermentation, and with the assistance of heating pipes, a suitable temperature is maintained, which significantly improves the biogas generation efficiency. The grey water chamber achieves rapid decontamination through multi-stage filtration and dynamic purification components. The separation treatment mode greatly shortens the overall treatment cycle, while realizing the synergistic recovery of organic energy (biogas) and reclaimed water.

[0018] The gas outlet pipe integrates a flow monitor and a gas concentration monitor to track biogas production, methane purity, and concentrations of harmful gases such as hydrogen sulfide in real time. The control valve assembly dynamically adjusts the exhaust opening through a motor-driven sealing plate to achieve closed-loop control of gas pressure balance and gas composition. This mechanism ensures the purity of biogas recovery and avoids secondary pollution caused by the escape of malodorous gases.

[0019] The filter components in the greywater chamber adopt a detachable drawer-type structure, which can quickly intercept solid debris such as hair and food residue, and can be directly pulled out for cleaning without stopping the machine, greatly reducing the risk of filter clogging and maintenance frequency. The rotating purification blades inside the purification box force the greywater to fully contact the biological packing or chemical agents and absorb the microorganisms in the sewage, avoiding the problem of reduced purification efficiency caused by water flow stagnation under low temperature conditions. Attached Figure Description

[0020] Figure 1 This is a first-view schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a partial schematic diagram of the structure of this utility model from a second perspective;

[0022] Figure 3 This is a schematic diagram of the internal structure of the purification box of this utility model;

[0023] Figure 4 This is an exploded view of the structural control valve assembly of this utility model.

[0024] In the diagram: 1. Separation tank; 2. Purification tank; 3. Rotating motor; 4. Connecting pipe; 5. Water outlet pipe; 6. Fixing box; 7. Miscellaneous drawer; 8. Pump; 9. Water inlet pipe; 10. Gas outlet pipe; 11. Control motor; 112. Adjusting rod; 13. Flow monitor; 14. Ash water chamber; 15. Black water chamber; 16. Gas concentration monitor; 17. Rotating rod; 18. Purification leaf; 19. Sealing plate. Detailed Implementation

[0025] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] Please see Figure 1-4 A low-temperature separation treatment device for rural domestic sewage includes a separation tank 1, which is divided into a black water chamber 15 and a grey water chamber 14. Both the black water chamber 15 and the grey water chamber 14 have inlet pipes 9 with pumps 8 installed on their upper side walls. A heating pipe is installed on the side wall of the black water chamber 15, and an air outlet pipe 10 is installed at one end of the side wall of the black water chamber 15. A control valve assembly is installed on the air outlet pipe 10. A filter assembly is installed on the upper side wall of the grey water chamber 14, and the upper end of the filter assembly is connected to the inlet pipe 9. A connecting pipe 4 is installed on one side wall of the grey water chamber 14, and a purification tank 2 is installed at one end of the connecting pipe 4. The purification chamber 2 is equipped with a purification component. A water outlet pipe 5 is provided at one end of the purification chamber 2. A flow monitor 13 is provided on the air outlet pipe 10. The flow monitor 13 is connected to the control valve. The control valve component includes a sealing plate 19, a control motor 11, and an adjusting rod 12. The control motor 11 is located at the upper end of the air outlet pipe 10. The adjusting rod 12 passes through the air outlet pipe 10 and is connected to the output end of the control motor 11. The sealing plate 19 is located on the adjusting rod and is sealed to the air outlet pipe 10. A gas concentration monitor 16 is provided in the black water chamber 15.

[0029] During operation, toilet wastewater is injected into the black water chamber 15 through the inlet pipe 9 (equipped with a pump 8) at the top. After the pump 8 is activated, the wastewater is directed to the black water chamber 15 to prevent mixing with the grey water. Low-pollution domestic sewage from the kitchen, bathroom, etc., enters the grey water chamber 14 through another inlet pipe 9 (also equipped with a pump 8) at the top, achieving physical separation of black water (high in organic matter) and grey water (low in organic matter). The heating pipe on the side wall of the black water chamber 15 is activated to maintain the chamber temperature at 30-35℃ (adjustable even in low-temperature environments), activating the activity of anaerobic bacteria and accelerating the decomposition of organic matter in the wastewater. Under anaerobic conditions, the organic matter decomposes to produce biogas, mainly methane, which accumulates at the top of the black water chamber 15 and is discharged through the gas outlet pipe 10 on the side wall. The flow monitor 13 on the gas outlet pipe 10 monitors the biogas production in real time. When the flow rate is too high, the linkage control valve assembly automatically... The system automatically expands the exhaust valve opening to prevent excessive pressure in the chamber; when the flow rate is too low, it reduces the opening to maintain a stable fermentation environment. The gas concentration monitor 16 in the black water chamber 15 analyzes the methane, hydrogen sulfide, and other components in the biogas in real time. If the methane concentration is below the threshold or the harmful gas exceeds the standard, the system triggers an early warning and automatically adjusts the valve opening to optimize the gas recovery quality. The purified biogas is transported to the gas storage tank through pipelines or used directly for village cooking, heating, etc., to achieve energy recovery. Before entering the ash water chamber 14, the ash water first flows through the filter components to filter out large particulate solids. The filtered ash water is temporarily stored in the ash water chamber 14 and transported to the purification box 2 for further treatment through the side wall connecting pipe 4. The purification components in the purification box 2 further purify the water to ensure that the effluent meets the standards for farmland irrigation or landscape reuse. The treated clean water is discharged into vegetable gardens, orchards, or ecological ponds through the water outlet pipe 5 to achieve water resource recycling.

[0030] In practical use, it is necessary to quickly remove solid impurities from the grey water and reduce the risk of filter clogging. To meet this requirement, in this embodiment, the filter assembly includes a fixed box 6 and a debris drawer 7. The fixed box 6 connects the grey water chamber 14 to the water inlet pipe 9, and the debris drawer 7 is located inside the fixed box 6 and detachably connected to it.

[0031] The miscellaneous drawer 7 intercepts large solid impurities such as hair, food scraps, and plastic, preventing subsequent equipment from clogging. When the drawer is full, it can be manually pulled out for cleaning without stopping the machine.

[0032] In practical applications, it is necessary to improve the contact efficiency between greywater and purification materials and shorten the treatment cycle. To meet these requirements, in this embodiment, the purification assembly includes a rotating motor 3, a rotating rod 17, and purification blades 18. The rotating motor 3 is located on one side wall of the purification chamber 2, the rotating rod 17 passes through the purification chamber 2, and the purification blades 18 are located around the rotating rod 17 and are adapted to the purification chamber 2.

[0033] After the rotating motor 3 is started, it drives the purification leaf 18 to rotate at high speed in the purification tank 2 through the rotating rod 17, forming a strong water flow disturbance. After the grey water enters the purification tank 2 through the connecting pipe 4, it is fully mixed with the chemical agents (such as flocculants, disinfectants or biological enzymes, which can be added in the water inlet pipe 9) added in the tank under the stirring of the purification leaf 18, which accelerates the decomposition of pollutants. At the same time, the surface or interior of the purification leaf 18 is filled with porous adsorption materials (such as activated carbon, zeolite or resin), which continuously adsorb pigments, heavy metal ions and residual micro particles in the water during the rotation process, further improving the water quality.

[0034] In actual use, it is necessary to reduce heat loss, maintain the fermentation temperature of the black water chamber 15 and prevent the ash water treatment section from freezing. In order to meet the above requirements, in this embodiment, the outer walls of the separation tank 1 and the water inlet pipe 9 are covered with polyurethane insulation layer, and the side wall of the ash water chamber 14 is provided with a double-layer insulation interlayer, which is filled with phase change heat storage material.

[0035] In actual use, it is necessary to block the heat conduction between the black water and ash water chamber 14 to avoid temperature interference between the high-temperature fermentation zone and the low-temperature ash water treatment zone. In order to meet the above requirements, in this embodiment, a vacuum insulation plate is provided between the black water chamber 15 and the ash water chamber 14.

[0036] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended only as examples, not as limiting the scope of protection of this application.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-temperature separation treatment device for rural domestic sewage, comprising a separation tank (1), characterized in that: The separation tank (1) is divided into a black water chamber (15) and a gray water chamber (14). Both the black water chamber (15) and the gray water chamber (14) are equipped with inlet pipes (9) with pumps (8) on their upper side walls. The black water chamber (15) is equipped with a heating pipe on its side wall. One end of the black water chamber (15) is equipped with an air outlet pipe (10). The air outlet pipe (10) is equipped with a control valve assembly. The gray water chamber (14) is equipped with a filter assembly on its upper side wall. The upper end of the filter assembly is connected to the inlet pipe (9). One side wall of the gray water chamber (14) is equipped with a connecting pipe (4). One end of the connecting pipe (4) is equipped with a purification box (2). The purification box (2) is equipped with a purification assembly. One end of the purification box (2) is equipped with an outlet pipe (5).

2. The low-temperature multi-quality treatment device for rural and town domestic sewage according to claim 1, characterized in that: The filter assembly includes a fixed box (6) and a debris drawer (7). The fixed box (6) connects the grey water chamber (14) to the water inlet pipe (9). The debris drawer (7) is inside the fixed box (6) and detachably connected to it.

3. The low-temperature multi-quality treatment device for rural and town domestic sewage according to claim 2, characterized in that: The purification assembly includes a rotating motor (3), a rotating rod (17), and purification blades (18). The rotating motor (3) is located on one side wall of the purification box (2), the rotating rod (17) passes through the purification box (2), and the purification blades (18) are located around the rotating rod (17) and are adapted to the purification box (2).

4. The low-temperature multi-quality treatment device for rural and town domestic sewage according to claim 1, characterized in that: A flow monitor (13) is provided on the air outlet pipe (10), and the flow monitor (13) is signal connected to the control valve assembly.

5. The low-temperature multi-quality treatment device for rural and town domestic sewage according to claim 1, characterized in that: The control valve assembly includes a sealing plate (19), a control motor (11), and an adjusting rod (12). The control motor (11) is located at the upper end of the air outlet pipe (10). The adjusting rod (12) passes through the air outlet pipe (10) and is connected to the output end of the control motor (11). The sealing plate (19) is located on the adjusting rod and is sealed to the air outlet pipe (10).

6. The low-temperature multi-quality treatment device for rural and town domestic sewage according to claim 5, characterized in that: A gas concentration monitor (16) is installed inside the black water chamber (15).

7. The low-temperature multi-quality treatment device for rural and town domestic sewage according to claim 6, characterized in that: The outer walls of the separation tank (1) and the water inlet pipe (9) are covered with polyurethane insulation layer, and the side wall of the grey water cavity (14) is provided with a double-layer insulation interlayer, which is filled with phase change heat storage material.

8. A low-temperature separation treatment device for rural domestic sewage according to claim 7, characterized in that: A vacuum insulation plate is provided between the black water chamber (15) and the gray water chamber (14).

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