A flat and quick dual-purpose grid disinfection pool

Abstract

The application provides a flat and urgent dual-purpose grid disinfection tank capable of being quickly converted, and belongs to the technical field of grid disinfection tanks. The flat and urgent dual-purpose grid disinfection tank comprises a sedimentation chamber and a treatment chamber. A grid assembly is arranged between the sedimentation chamber and the treatment chamber. The grid assembly is used for separating the sedimentation chamber and the treatment chamber and assisting the sedimentation chamber in carrying out sand setting treatment on sewage to prevent suspended solids from causing blockage of internal components of the treatment chamber. A water inlet assembly is arranged on one side of the sedimentation chamber away from the treatment chamber. A water outlet assembly is arranged on one side of the treatment chamber away from the sedimentation chamber. The water inlet assembly and the water outlet assembly are both four-way arrangements, which are used for conveniently adding sewage to be treated and discharging treated sewage from multiple directions. One side of the treatment chamber is in through connection with a disinfection assembly. The disinfection assembly is used for adding a disinfectant into the treatment chamber and discharging tail gas generated in the disinfection process of the sewage.

Description

Technical Field

[0001] This invention belongs to the technical field of bar screen disinfection tanks, and specifically relates to a bar screen disinfection tank that can be quickly converted for both normal and emergency use. Background Technology

[0002] In the early stages of my country's development, with underdeveloped urban sewage systems, stabilization ponds served as the first-stage water treatment structure in urban sewage networks, playing a role in reducing pollution and preventing subsequent network blockages. However, weak operation and management of stabilization ponds exposed many shortcomings and problems. With my country's continuous economic development and the increasing sophistication of urban sewage treatment systems across the country, grit chambers, compared to stabilization ponds, have advantages such as smaller footprint and shorter hydraulic retention time, while also offering some protection against network blockages. In some areas, they have gradually replaced stabilization ponds.

[0003] The construction of public infrastructure that can be used in both normal and emergency situations is one of the "three major projects," requiring that the conversion time between the normal use function and the emergency function during disasters should not exceed 48 hours. Currently, during disasters, the existing disinfection pools often employ an enhanced disinfection treatment method of "pre-disinfection + septic tank + disinfection" for sewage treatment. However, if this solution were used in "normal" conditions, it would require a large area and regular cleaning and maintenance of various structures, making it relatively wasteful for "normal" use.

[0004] In summary, existing disinfection pools suffer from slow conversion between emergency and routine use and low utilization efficiency. Summary of the Invention

[0005] In view of this, the present invention provides a grid disinfection tank that can be quickly converted between emergency and normal use, which can solve the problem that existing disinfection tanks have slow conversion between "emergency" and "normal" use and low utilization efficiency.

[0006] This invention is implemented as follows:

[0007] This invention provides a dual-purpose (normal and emergency) screen disinfection tank that can be quickly converted, comprising a settling chamber and a treatment chamber. A screen assembly is provided between the settling chamber and the treatment chamber. The screen assembly separates the settling chamber and the treatment chamber and assists the settling chamber in treating wastewater by removing sand to prevent suspended solids from clogging the internal components of the treatment chamber. An inlet assembly is provided on the side of the settling chamber away from the treatment chamber, and an outlet assembly is provided on the side of the treatment chamber away from the settling chamber. Both the inlet and outlet assemblies are four-way connections, allowing for convenient addition of wastewater to be treated from multiple directions and the removal of treated wastewater. One side of the treatment chamber is connected to a disinfection assembly, which is used to add disinfectant to the treatment chamber and discharge the exhaust gas generated during the wastewater disinfection process.

[0008] The disinfection assembly includes a disinfectant dosing assembly, a backflushing assembly, an exhaust gas treatment assembly, and a water quality testing assembly. The disinfectant dosing assembly is connected to the treatment chamber near the grid assembly and is used to uniformly add disinfectant to the settled wastewater to reduce the impact of suspended solids in the wastewater on the disinfectant treatment effect. The backflushing assembly is connected to the disinfectant dosing assembly and is used to flush the disinfectant dosing assembly to prevent clogging. The front and rear sides of the treatment chamber are connected to the exhaust gas treatment assembly to treat toxic gases generated during the wastewater treatment process. The water quality testing assembly is connected to the side of the treatment chamber away from the settling chamber and is used to test the water quality of the treated wastewater.

[0009] The settling chamber and the treatment chamber are located underground, while the disinfection component is located above ground and is connected to the settling chamber and the treatment chamber via pipelines.

[0010] The technical advantages of the dual-use (normal and emergency) grid disinfection tank provided by this invention are as follows: The benefits of this disinfection tank include:

[0011] (1) It solves the problem of sewage treatment when the project is converted from "normal and emergency use". The division of labor of the entire pool and control system is simple and clear. Under normal circumstances, the disinfection pool can be used for daily sewage treatment. However, in case of emergencies such as natural disasters, the disinfection pool can be quickly converted into an enhanced disinfection treatment facility to meet the sewage treatment needs of the contaminated area and buffer zone.

[0012] (2) In combination with the needs of sewage pretreatment and disinfection, the hydraulic retention time of the entire pool is controlled at 2.5h to 3h. Compared with the hydraulic retention time of 24h to 36h in the septic tank, the area occupied and effective volume are greatly reduced, resulting in better economic benefits.

[0013] (3) The disinfection component is located at the back end of the pretreatment process, which avoids the impact of large suspended solids in the sewage on the disinfection effect; multiple guide walls are set in the disinfection section to make the disinfectant distribution more uniform and the disinfection effect more thorough.

[0014] (4) In the event of emergencies such as the spread of an epidemic or a natural disaster, the treatment capacity can be rapidly increased to ensure that sewage is disinfected in a timely manner and reduce the threat to public health; the flexibility in design allows the facility to be quickly adjusted according to actual needs to adapt to different working environments and sewage treatment requirements.

[0015] (5) Under normal circumstances, disinfection tanks can efficiently treat daily sewage, avoid idle resources, and can be put into use immediately when needed, thereby improving resource utilization.

[0016] Based on the above technical solution, the dual-use (normal and emergency) grid disinfection tank of the present invention can be further improved as follows:

[0017] Both the settling chamber and the treatment chamber have concrete pads at their bottoms to prevent wastewater seepage and soil contamination. The concrete pad at the bottom of the treatment chamber is 150mm thick, while the concrete pad at the bottom of the settling chamber is a sloping structure that gradually slopes from the side closest to the settling chamber towards the side furthest away from it, with an inclination angle of 4-6°. This allows suspended solids in the wastewater to be concentrated and stored on the side furthest from the settling chamber for easy collection. Furthermore, the concrete pads at the connection between the settling chamber and the treatment chamber are integrally formed at the same height to prevent the accumulation of suspended solids.

[0018] Both the settling chamber and the treatment chamber have openings at their tops, with the other side of each opening leading to the ground. These openings are sealed and secured with double-layered locking manhole covers.

[0019] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: The concrete bedding layer at the bottom of the disinfection tank prevents sewage from seeping into the soil, thus preventing harmful substances from polluting groundwater and soil and protecting the ecological environment; by preventing sewage seepage, it ensures that the disinfectant in the sewage treatment process can play its full role, improving disinfection effect and treatment efficiency; the concrete bedding layer enhances the sealing of the tank, reducing the possibility of sewage leakage into the surrounding land and avoiding potential environmental safety problems; the concrete bedding layer enhances the overall structural stability of the tank, preventing ground deformation caused by land changes or sewage seepage; by preventing sewage seepage and leakage, the concrete bedding layer extends the service life of the tank and reduces structural damage caused by leakage and seepage.

[0020] Furthermore, the grid assembly includes a hook and a grid. The hook is fixed to the top wall of the settling chamber and the treatment chamber, with the hook facing the settling chamber. A protrusion is provided at the bottom of the hook and the grid adjacent to each other. A magnetic element is fixed at the middle of the protrusion, and an adsorption element is fixed at the bottom of the grid. The adsorption element is compatible with the magnetic element.

[0021] The hook includes a fixing part and a tensioning part. The tensioning part is located in the middle of the fixing part and is made of a rigid spring. It is used to facilitate the fixed installation of the grille by means of tension. The fixing part is a ring structure with a slot on one side and a plug at the matching position. The hook on which the grille is installed is fixed by the cooperation of the slot and the plug.

[0022] Furthermore, the grille has an arched structure with its curvature facing one side of the settling chamber, which is used to further reinforce the grille through the impact of sewage;

[0023] The grid is provided with multiple grid bars of the same size, which are used to allow water to flow through but prevent suspended solids from passing through.

[0024] The beneficial effects of adopting the above-mentioned improved scheme are as follows: The arched structure of the screen can effectively alleviate eddies and turbulence in the water flow, making the water flow more stable and reducing surges and turbulence, thereby improving the disinfection effect; the arc-shaped screen design can increase the contact area between the water flow and the screen, increasing the contact and reaction area between the disinfectant and the wastewater, thus improving disinfection efficiency. The arched side facing the settling chamber effectively prevents sediment from accumulating on the screen, reducing the risk of screen blockage and ensuring smooth water flow. By improving disinfection efficiency and reducing water flow resistance, the arched screen design can reduce the total cost of wastewater treatment, including the amount of disinfectant used and energy consumption.

[0025] Furthermore, in the four-port structure of the water inlet assembly and the water outlet assembly, adjacent ports are spaced 90° apart, and the port penetrating into the settling chamber and the treatment chamber is set as an L-shaped structure, with one end bent downwards and fixed to the inner wall of the settling chamber and the treatment chamber respectively by a bracket. The side wall of the bracket is welded and fixed to the side wall of the settling chamber and the treatment chamber. The other end is provided with an annular frame, and the water inlet assembly and the water outlet assembly are sleeved in the annular frame. The annular frame is fastened by bolts.

[0026] The connection position of the four ports of the water inlet assembly is set as a circular structure to block suspended solids in the sewage and prevent them from clogging the ports of the water inlet assembly; the diameter of the three ports of the water inlet assembly away from the settling chamber gradually increases in the direction closer to the settling chamber.

[0027] A flow meter is fitted onto the water inlet assembly.

[0028] The beneficial effects of adopting the above-mentioned improved scheme are as follows: The four-way structure facilitates more uniform sewage entry into the disinfection tank, while the circular confluence design further optimizes the influent flow pattern, reducing scouring and particle accumulation caused by excessively high local flow velocities. The circular confluence effectively intercepts larger suspended particles, preventing them from entering subsequent treatment units in the disinfection tank, avoiding blockages and equipment damage, extending equipment lifespan, and reducing maintenance costs. Furthermore, all three inlets can be used to inject sewage into the settling chamber, avoiding the localized high flow velocities and eddies that might occur with a single inlet, thereby improving the uniformity and stability of the water flow. The gradually increasing diameter of the straight holes reduces localized pressure concentration at the inlet, enhancing the overall structural stability of the four-way structure; the gradually increasing diameter of the inlets further prevents blockages.

[0029] Furthermore, the interior of the treatment chamber is equipped with multiple guide walls, all of which are arc-shaped structures and are fixedly connected to the bottom concrete pad of the treatment chamber to make the disinfection treatment of sewage more thorough; the multiple guide walls form a spiral structure in the horizontal direction to allow sewage from all directions to collide multiple times.

[0030] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the guide wall can effectively capture floating objects in sewage, reduce the risk of floating objects entering subsequent treatment equipment, and improve overall treatment efficiency. Through multiple collisions, the guide wall can promote the separation and sedimentation of sediments in sewage, making subsequent sediment removal work more efficient; the guide wall increases the contact area between sewage and the guide wall, promoting full contact between sewage and disinfectant, and improving the disinfection effect; the design of the guide wall can make the disinfectant more evenly distributed in the water flow, ensuring that every part of sewage can come into contact with sufficient disinfectant, thereby improving the disinfection effect.

[0031] Furthermore, the disinfectant dosing assembly includes a dosing tube and a motor. The dosing tube includes two sections: a fixed section and a rotating section. The fixed section and the rotating section are connected by a slot. One side of the rotating section is fixedly connected to the output shaft of the motor. The motor is used to drive the rotating section to rotate.

[0032] An arc groove is provided on the side of the grille near the treatment chamber, and the dosing pipe is abutted against the arc groove on the side of the grille near the grille; multiple through holes are horizontally provided on one side of the dosing pipe, and the through holes are used to add disinfectant into the interior of the treatment chamber.

[0033] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the rotating section of the dosing pipe can rotate and lock into the arc groove of the bar screen to block its own outlet hole, preventing sewage from flowing back through the outlet hole, ensuring that the disinfectant can fully interact with the sewage and avoid reducing the efficacy; preventing backflow can protect the dosing pipe and related equipment from the corrosion and damage of sewage to the equipment, and extend the service life of the equipment.

[0034] Furthermore, one end of the backwash assembly is connected to the end of the dosing pipe, and the other end is connected to the output port of the water pump. This is used to backwash the inside of the dosing pipe by the flushing pressure of the water in the water pump to prevent the disinfectant from becoming clogged. The backwash assembly and the dosing pipe are set at a 45° angle.

[0035] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: Concentrated disinfectants are prone to crystallization or precipitation, leading to blockage of the dosing pipe. The backflushing component can effectively remove deposits and crystals inside the dosing pipe, keeping the pipeline unobstructed and ensuring the continuity and stability of the dosing process. Blockage can cause increased internal pressure in the dosing pipe and even lead to pipe rupture. Regular backflushing can effectively reduce the occurrence of blockage, thereby extending the service life of the dosing pipe and reducing maintenance and replacement costs.

[0036] Furthermore, the exhaust gas treatment assembly includes a biogas pipe, a processor, and an aerial emission pipe. The biogas pipe comprises multiple pipes, which are respectively connected to different locations in the settling chamber and the treatment chamber. One end of the processor is connected to the multiple biogas pipes for treating the gas. The top of the processor is connected to the aerial emission pipe for discharging the treated gas into the high atmosphere.

[0037] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: after being processed by the processor, biogas is converted into carbon dioxide and water. Carbon dioxide and water are common components in nature, and their emission into the air has a relatively small impact on the environment. In contrast, direct emission of biogas increases the concentration of greenhouse gases and exacerbates climate change.

[0038] Furthermore, the water quality testing component is a pipe structure, with one end extending out of the ground and the other end connected through to the top of the water outlet component, for pumping out treated water from the water outlet component for water quality testing.

[0039] Compared with existing technologies, the beneficial effects of the dual-use (normal and emergency) grid disinfection tank provided by this invention are:

[0040] (1) It solves the problem of sewage treatment when the project is converted from "normal and emergency use". The division of labor of the entire pool and control system is simple and clear. Under normal circumstances, the disinfection pool can be used for daily sewage treatment. However, in case of emergencies such as natural disasters, the disinfection pool can be quickly converted into an enhanced disinfection treatment facility to meet the sewage treatment needs of the contaminated area and buffer zone.

[0041] (2) In combination with the needs of sewage pretreatment and disinfection, the hydraulic retention time of the entire pool is controlled at 2.5h to 3h. Compared with the hydraulic retention time of 24h to 36h in the septic tank, the area occupied and effective volume are greatly reduced, resulting in better economic benefits.

[0042] (3) The disinfection component is located at the back end of the pretreatment process, which avoids the impact of large suspended solids in the sewage on the disinfection effect; multiple guide walls are set in the disinfection section to make the disinfectant distribution more uniform and the disinfection effect more thorough.

[0043] (4) In the event of emergencies such as the spread of an epidemic or a natural disaster, the treatment capacity can be rapidly increased to ensure that sewage is disinfected in a timely manner and reduce the threat to public health; the flexibility in design allows the facility to be quickly adjusted according to actual needs to adapt to different working environments and sewage treatment requirements.

[0044] (5) Under normal circumstances, disinfection tanks can efficiently treat daily sewage, avoid idle resources, and can be put into use immediately when needed, thereby improving resource utilization. Attached Figure Description

[0045] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is a cross-sectional view of a grid disinfection tank that can be quickly converted for both normal and emergency use.

[0047] Figure 2 A side view of the grille of a dual-purpose (normal and emergency) grille disinfection tank that can be quickly converted;

[0048] Figure 3 A front view of the hook of a grid disinfection tank that can be quickly converted for both normal and emergency use;

[0049] Figure 4 A top view of the inlet assembly of a dual-purpose (normal and emergency) bar disinfection tank that can be quickly converted;

[0050] Figure 5A front view of the inlet assembly of a dual-purpose (normal and emergency) bar screen disinfection tank that can be quickly converted;

[0051] Figure 6 A top view of the guide wall of a grid disinfection tank that can be quickly converted for both normal and emergency use;

[0052] The attached diagram lists the components represented by each number as follows:

[0053] 10. Settling chamber; 20. Treatment chamber; 21. Baffle wall; 30. Inlet water assembly; 40. Outlet water assembly; 50. Disinfection assembly; 51. Disinfectant dosing assembly; 511. Dosing pipe; 512. Motor; 52. Backflushing assembly; 53. Exhaust gas treatment assembly; 531. Biogas pipe; 532. Processor; 533. High-altitude discharge pipe; 54. Water quality testing assembly; 60. Bar screen assembly; 61. Hook; 611. Fixing part; 612. Tensioning part; 62. Bar screen. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0055] like Figure 1-6 The diagram shows the structure of a dual-purpose (normal and emergency) quick-convertible bar disinfection tank provided by this invention. The device includes a settling chamber 10 and a treatment chamber 20. A bar assembly 60 is installed between the settling chamber 10 and the treatment chamber 20. The bar assembly 60 separates the settling chamber 10 and the treatment chamber 20 and assists the settling chamber 10 in treating wastewater by settling sand to prevent suspended solids from clogging the internal components of the treatment chamber 20. An inlet assembly 30 is installed on the side of the settling chamber 10 away from the treatment chamber 20, and an outlet assembly 40 is installed on the side of the treatment chamber 20 away from the settling chamber 10. Both the inlet assembly 30 and the outlet assembly 40 are four-way connections, facilitating the addition of wastewater to be treated from multiple directions and the removal of treated wastewater. One side of the treatment chamber 20 is connected to a disinfection assembly 50, which is used to add disinfectant to the treatment chamber 20 and discharge the exhaust gas generated during the wastewater disinfection process.

[0056] The disinfection assembly 50 includes a disinfectant dosing assembly 51, a backflushing assembly 52, an exhaust gas treatment assembly 53, and a water quality testing assembly 54. The disinfectant dosing assembly 51 is connected to the treatment chamber 20 near the grid assembly 60 and is used to uniformly add disinfectant to the settled wastewater to reduce the impact of suspended solids in the wastewater on the disinfectant treatment effect. The backflushing assembly 52 is connected to the disinfectant dosing assembly 51 and is used to flush the disinfectant dosing assembly 51 to prevent clogging. The front and rear sides of the treatment chamber 20 are connected to the exhaust gas treatment assembly 53 and are used to treat toxic gases generated during the wastewater treatment process. The water quality testing assembly 54 is connected to the side of the treatment chamber 20 away from the settling chamber 10 and is used to test the water quality of the treated wastewater.

[0057] The settling chamber 10 and the treatment chamber 20 are located underground, while the disinfection component 50 is located above ground and is connected to the settling chamber 10 and the treatment chamber 20 via pipes.

[0058] In the above technical solution, both the bottom of the settling chamber 10 and the treatment chamber 20 are provided with concrete pads to prevent sewage seepage and avoid soil pollution. The concrete pad at the bottom of the treatment chamber 20 is 150mm thick, and the concrete pad at the bottom of the settling chamber 10 is designed as a sloping structure that gradually slopes from the side closer to the settling chamber 10 to the side farther away from the settling chamber 10, with an inclination angle of 4-6°. This allows suspended solids in the sewage to be concentrated and stored on the side away from the settling chamber 10 for easy collection. Furthermore, the concrete pads at the connection between the settling chamber 10 and the treatment chamber 20 are integrally formed and have the same height to prevent the accumulation of suspended solids.

[0059] Both the settling chamber 10 and the treatment chamber 20 have openings at the top, with the other side of the opening leading to the ground. They are sealed and fixed by double-layered locking manhole covers.

[0060] Furthermore, in the above technical solution, the grid assembly 60 includes a hook 61 and a grid 62. The hook 61 is fixed on the top wall of the settling chamber 10 and the treatment chamber 20 adjacent to each other, and the hook is oriented towards the settling chamber 10. A protrusion is provided at the bottom of the adjacent position of the hook 61 and the grid 62. A magnetic component is fixed in the middle of the protrusion, and an adsorption component is fixed at the bottom of the grid 62. The adsorption component is compatible with the magnetic component.

[0061] The hook 61 includes a fixing part 611 and a tensioning part 612. The tensioning part 612 is located in the middle of the fixing part 611 and is made of a hard spring. It is used to facilitate the fixed installation of the grille 62 by means of tension. The fixing part 611 has a ring structure and a slot is provided on one side. A plug is provided at the matching position. The hook 61 with the grille 62 is fixed by the cooperation of the slot and the plug.

[0062] Furthermore, in the above technical solution, the grille 62 is an arched structure with its bending direction facing one side of the settling chamber 10, which is used to further reinforce the grille 62 by the impact of sewage.

[0063] The grid 62 is provided with multiple grid bars of the same size, which are used to allow water to flow through but prevent suspended solids from passing through.

[0064] Furthermore, in the above technical solution, the adjacent openings in the four-way structure of the water inlet component 30 and the water outlet component 40 are spaced 90° apart, and the openings that pass through the sedimentation chamber 10 and the treatment chamber 20 are set as L-shaped structures, one end of which is bent downward and fixed to the inner walls of the sedimentation chamber 10 and the treatment chamber 20 respectively by a bracket. The side wall of the bracket is welded and fixed to the side wall of the sedimentation chamber 10 and the treatment chamber 20. The other end is provided with an annular frame, and the water inlet component 30 and the water outlet component 40 are fitted in the annular frame. The annular frame is fastened by bolts.

[0065] The connection position of the four ports of the water inlet assembly 30 is set as a circular structure to block suspended solids in the sewage and prevent them from clogging the ports of the water inlet assembly 30; the diameter of the three ports of the water inlet assembly 30 away from the settling chamber 10 gradually increases in the direction closer to the settling chamber 10.

[0066] A flow meter is fitted onto the water inlet assembly 30.

[0067] Furthermore, in the above technical solution, the treatment chamber 20 is equipped with multiple guide walls 21, all of which are arc-shaped structures and are fixedly connected to the bottom concrete pad of the treatment chamber 20 to make the disinfection treatment of sewage more thorough; the multiple guide walls 21 form a spiral structure in the horizontal direction to allow sewage from all directions to collide multiple times.

[0068] Furthermore, in the above technical solution, the disinfectant dosing component 51 includes a dosing tube 511 and a motor 512. The dosing tube 511 includes two sections, namely a fixed section and a rotating section. The fixed section and the rotating section are connected by a slot. One side of the rotating section is fixedly connected to the output shaft of the motor 512. The motor 512 is used to drive the rotating section to rotate.

[0069] The grille 62 has an arc groove on the side near the treatment chamber 20, and the dosing pipe 511 is positioned to abut against the arc groove on the side near the grille 62; multiple through holes are horizontally arranged on one side of the dosing pipe 511, which are used to add disinfectant into the interior of the treatment chamber 20.

[0070] Furthermore, in the above technical solution, one end of the backwash component 52 is connected to the end of the dosing pipe 511, and the other end is connected to the output port of the water pump. It is used to backwash the inside of the dosing pipe 511 by the flushing pressure of the water in the water pump to avoid the disinfectant from getting blocked. The backwash component 52 and the dosing pipe 511 are set at a 45° angle.

[0071] Furthermore, in the above technical solution, the exhaust gas treatment component 53 includes a biogas pipe 531, a processor 532, and a high-altitude emission pipe 533. The biogas pipe 531 includes multiple pipes, which are respectively connected to different positions of the settling chamber 10 and the treatment chamber 20. One end of the processor 532 is connected to multiple biogas pipes 531 for treating the gas. The top of the processor 532 is connected to the high-altitude emission pipe 533 for discharging the treated gas into the high atmosphere.

[0072] The process of converting biogas into harmless gases (such as carbon dioxide and water) typically involves multi-step chemical or biological treatment methods.

[0073] (1) Biogas must first be pretreated: remove impurities from the biogas, such as gaseous, liquid, and solid impurities. Biogas may contain moisture, which needs to be removed for more efficient subsequent processing. The processor 532 uses a desiccant or condenser to remove moisture.

[0074] (2) Oxidation treatment of pretreated biogas: oxidizing methane (CH4) and other organic compounds in the biogas. This can be achieved using chemical oxidants. Under high temperature and high pressure conditions, the organic compounds in the biogas react with oxygen to produce carbon dioxide and water.

[0075] The chemical formula is: CH4 + 2O2 → CO2 + 2H2O;

[0076] (3) Purification Treatment: Biogas may contain harmful components such as hydrogen sulfide (H2S) and volatile organic compounds (VOCs). These harmful components need to be removed through a purification process. The processor 532 contains activated carbon adsorbent and aluminosilicate catalyst to convert harmful components into harmless compounds.

[0077] (4) Volatile organic compound treatment: Under high temperature and high pressure conditions, volatile organic compounds are oxidized into carbon dioxide and water using catalysts (such as platinum or palladium).

[0078] (5) Sulfur dioxide treatment: Hydrogen sulfide in biogas will be converted into sulfur dioxide during the treatment process. The sulfur dioxide is adsorbed by the adsorbent pentanol.

[0079] Furthermore, in the above technical solution, the water quality testing component 54 is a pipe structure, with one end extending out of the ground and the other end connected through to the top of the water outlet component 40, for pumping out treated water from the water outlet component 40 for water quality testing.

[0080] During normal use, the disinfection tank primarily functions as a grit chamber. The tank is divided into two sections at the grit location. The first section is for wastewater pretreatment, removing large suspended solids and grit to prevent clogging of subsequent wastewater pipes. A 150mm thick concrete base layer is placed beneath the tank, with a 5% slope at the bottom to collect waste and grit, facilitating cleaning and minimizing impact on the wastewater flow in the subsequent disinfection section. The hydraulic retention time in the first section can be designed to be 0.5 to 1 hour.

[0081] This tank functions as a disinfection tank in emergency situations. The first upstream compartment primarily removes large suspended solids and sediment from the wastewater, minimizing the impact of suspended impurities on subsequent disinfection. The second downstream compartment is the disinfection chamber, where disinfectant is evenly added through a perforated pipe within the screen via a disinfectant dosing device in the equipment room. The hydraulic retention time of the disinfection unit is designed for 2 hours, and the guide walls ensure thorough and complete disinfection. Additionally, an online water quality monitoring device in the equipment room takes water samples from the four outlet points of the wastewater, controlling the dosage by monitoring the effluent quality in real time. A remote flow meter is installed at the wastewater inlet, allowing for real-time adjustment of the dosage based on the water flow.

[0082] The entire tank can be cleaned within 30 days. Because the dosing pipe is a multi-hole pipe with a backwashing device, the dosing pipe should also be flushed and maintained once a month to prevent blockage.

[0083] In emergency situations, wastewater exhaust gas should be disinfected before being discharged. Two ventilation pipes are installed in the pool via the inspection well. After being disinfected by the high-efficiency exhaust gas treatment device in the equipment room, the exhaust gas extends to the roof of the equipment room for discharge.

[0084] The specific workflow for water quality testing is as follows:

[0085] Step 1: Use water quality testing kit 54 to sample the treated water flowing out of effluent kit 40. After sampling, bring the sample back to the laboratory for testing as soon as possible to avoid changes in the sample during transportation. If testing cannot be performed immediately, store the sample at 4-6℃.

[0086] Step 2: The water sample is first filtered through 0.45μm and 0.22μm filter paper to remove suspended solids and other impurities.

[0087] Step 3: Divide the pre-filtered water sample into different centrifuge tubes, preheat the centrifuge to ensure that the temperature of the centrifuge tubes and the centrifuge platform is the same, put the sample into the centrifuge, adjust the centrifugation speed to 3000 rpm, and the time to 20 minutes.

[0088] Step 4: Use a pipette or a bend in a tube to draw up the supernatant and place it into different clean test tubes, leaving the precipitate in the centrifuge tube for subsequent testing;

[0089] Step 5: Use a pH meter to measure the pH value of the water sample in a test tube to ensure that the pH value of the treated water sample is within the specified range, usually 6.5-8.5;

[0090] Step 6: Detect the number of infectious bacteria in the second test tube water sample using a culture method. Add the water sample to the culture medium and incubate at a specific temperature. Observe the number of colonies in the culture medium and calculate the number of infectious bacteria.

[0091] Step 7: Use a COD analyzer or chemical reagents to determine the chemical oxygen demand of the water sample in the third test tube, use the Nessler quantitative method to determine the ammonia nitrogen content in the water sample in the fourth test tube, and use the nitrite method to determine the phosphorus content in the water sample in the fifth test tube.

[0092] Step 8: Use atomic absorption spectrometry to detect heavy metals in the sixth test tube; use gas chromatography to test for organic pollutants in the seventh test tube;

[0093] Step 9: Record all test results in the sample test form, analyze the test results, and ensure that the treated water quality meets relevant environmental protection standards and regulations.

[0094] Specifically, the principle of this invention is as follows: During normal use, the disinfection tank primarily functions as a grit chamber. The entire disinfection tank is divided into two sections at the grit location. The first section is a wastewater pretreatment section, which removes large suspended solids and sediment from the wastewater, preventing blockage of subsequent wastewater pipes. A 150mm thick concrete base layer is constructed beneath the tank, with a 5% slope at the bottom of the first section for collecting waste and sediment, facilitating cleaning, and minimizing impact on the wastewater flow in the subsequent disinfection section. The hydraulic retention time in the first section can be designed to be 0.5h to 1h.

[0095] This tank functions as a disinfection tank in emergency situations. The first upstream compartment primarily removes large suspended solids and sediment from the wastewater, minimizing the impact of suspended impurities on subsequent disinfection. The second downstream compartment is the disinfection chamber, where disinfectant is evenly added through a perforated pipe within the screen via a disinfectant dosing device in the equipment room. The hydraulic retention time of the disinfection unit is designed for 2 hours, and the guide walls ensure thorough and complete disinfection. Additionally, an online water quality monitoring device in the equipment room takes water samples from the four outlet points of the wastewater, controlling the dosage by monitoring the effluent quality in real time. A remote flow meter is installed at the wastewater inlet, allowing for real-time adjustment of the dosage based on the water flow.

[0096] The entire tank can be cleaned within 30 days. Because the dosing pipe is a multi-hole pipe with a backwashing device, the dosing pipe should also be flushed and maintained once a month to prevent blockage.

[0097] In emergency situations, wastewater exhaust gas should be disinfected before being discharged. Two ventilation pipes are installed in the pool via the inspection well. After being disinfected by the high-efficiency exhaust gas treatment device in the equipment room, the exhaust gas extends to the roof of the equipment room for discharge.

[0098] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A dual-use (normal and emergency) grid disinfection tank with rapid conversion capability, characterized in that, The system includes a settling chamber (10) and a treatment chamber (20). A grid assembly (60) is provided between the settling chamber (10) and the treatment chamber (20). The grid assembly (60) is used to separate the settling chamber (10) and the treatment chamber (20) and assist the settling chamber (10) in treating the sewage by removing sand to prevent suspended solids from clogging the internal components of the treatment chamber (20). An inlet assembly (30) is provided on the side of the settling chamber (10) away from the treatment chamber (20), and an outlet assembly (40) is provided on the side of the treatment chamber (20) away from the settling chamber (10). Both the inlet assembly (30) and the outlet assembly (40) are four-way connections to facilitate the addition of sewage to be treated from multiple directions and the discharge of treated sewage. One side of the treatment chamber (20) is connected to a disinfection assembly (50). The disinfection assembly (50) is used to add disinfectant to the treatment chamber (20) and discharge the exhaust gas generated during the sewage disinfection process. The disinfection assembly (50) includes a disinfectant dosing assembly (51), a backflushing assembly (52), an exhaust gas treatment assembly (53), and a water quality testing assembly (54). The disinfectant dosing assembly (51) is connected to the treatment chamber (20) near the grid assembly (60) and is used to uniformly add disinfectant to the settled wastewater to reduce the impact of suspended solids in the wastewater on the disinfectant treatment effect. The backflushing assembly (52) is connected to the disinfectant dosing assembly (51) and is used to flush the disinfectant dosing assembly (51) to prevent the disinfectant dosing assembly (51) from becoming clogged. The front and rear sides of the treatment chamber (20) are connected to the exhaust gas treatment assembly (53) and are used to treat the toxic gases generated during the wastewater treatment process. The water quality testing assembly (54) is connected to the side of the treatment chamber (20) away from the settling chamber (10) and is used to test the water quality of the treated wastewater. The settling chamber (10) and the treatment chamber (20) are located underground, while the disinfection component (50) is located above ground and is connected to the settling chamber (10) and the treatment chamber (20) via pipes. Both the settling chamber (10) and the treatment chamber (20) are provided with concrete cushion layers at the bottom to prevent sewage from seeping in and thus avoid soil pollution. The concrete cushion layer at the bottom of the treatment chamber (20) is 150mm thick. The concrete cushion layer at the bottom of the settling chamber (10) is designed as a slope structure that gradually slopes from the side closer to the settling chamber (10) to the side farther away from the settling chamber (10), with an inclination angle of 4-6°. This is to allow suspended solids in the sewage to be concentrated and stored on the side away from the settling chamber (10) for easy collection. Furthermore, the concrete cushion layer at the connection between the settling chamber (10) and the treatment chamber (20) is integrally set with the same height to prevent the accumulation of suspended solids. The top of both the settling chamber (10) and the treatment chamber (20) is provided with an opening, the other side of which leads to the ground and is sealed and fixed by a double-layer locking manhole cover; The grid assembly (60) includes a hook (61) and a grid (62). The hook (61) is fixed on the top wall of the settling chamber (10) and the processing chamber (20) adjacent to each other, with the hook facing the settling chamber (10). The bottom of the hook (61) and the grid (62) adjacent to each other is provided with a protrusion. A magnetic element is fixed in the middle of the protrusion. An adsorption element is fixed at the bottom of the grid (62). The adsorption element is compatible with the magnetic element. The hook (61) includes a fixing part (611) and a stretching part (612). The stretching part (612) is located in the middle of the fixing part (611) and is made of a hard spring. It is used to facilitate the fixed installation of the grille (62) by stretching force. The fixing part (611) is a ring structure with a slot on one side and a plug at the matching position. The hook (61) with the grille (62) installed is fixed by the cooperation of the slot and the plug. The grid (62) is an arched structure with its curvature facing one side of the settling chamber (10), which is used to further reinforce the grid (62) by the impact of sewage; The grid (62) is provided with a plurality of grid bars of the same size, which are used to allow water to flow through but prevent suspended solids from passing through; The treatment chamber (20) is equipped with multiple guide walls (21), all of which are arc-shaped and are fixedly connected to the bottom concrete pad of the treatment chamber (20) to make the disinfection treatment of sewage more thorough; the multiple guide walls (21) form a spiral structure in the horizontal direction to allow sewage from all directions to collide multiple times.

2. The dual-use (normal and emergency) grid disinfection tank with rapid conversion according to claim 1, characterized in that, The adjacent openings in the four-way structure of the water inlet assembly (30) and the water outlet assembly (40) are spaced 90° apart, and the openings that pass through the settling chamber (10) and the treatment chamber (20) are set in an L-shaped structure, with one end bent downwards and fixed to the inner walls of the settling chamber (10) and the treatment chamber (20) respectively by a bracket. The side wall of the bracket is welded and fixed to the side wall of the settling chamber (10) and the treatment chamber (20). The other end is provided with an annular frame, and the water inlet assembly (30) and the water outlet assembly (40) are fitted in the annular frame. The annular frame is fastened by bolts. The connection position of the four ports of the water inlet assembly (30) is set as a circular structure to block suspended solids in the sewage and prevent them from clogging the ports of the water inlet assembly (30); the diameter of the three ports of the water inlet assembly (30) away from the settling chamber (10) gradually increases in the direction closer to the settling chamber (10). A flow meter is fitted onto the water inlet assembly (30).

3. A dual-use (normal and emergency) grid disinfection tank with rapid conversion according to claim 2, characterized in that, The disinfectant dosing assembly (51) includes a dosing tube (511) and a motor (512). The dosing tube (511) includes two sections, a fixed section and a rotating section, which are connected by a slot. One side of the rotating section is fixedly connected to the output shaft of the motor (512). The motor (512) is used to drive the rotating section to rotate. The grille (62) has an arc groove on the side near the treatment chamber (20), and the dosing pipe (511) is abutted against the arc groove on the side near the grille (62); a plurality of through holes are horizontally arranged on one side of the dosing pipe (511), and the through holes are used to add disinfectant into the interior of the treatment chamber (20).

4. A dual-use (normal and emergency) grid disinfection tank with rapid conversion according to claim 3, characterized in that, One end of the backwash assembly (52) is connected to the end of the dosing pipe (511), and the other end is connected to the output port of the water pump. It is used to backwash the inside of the dosing pipe (511) by the flushing pressure of the water in the water pump to avoid the disinfectant from getting blocked. The backwash assembly (52) and the dosing pipe (511) are set at a 45° angle.

5. A dual-use (normal and emergency) grid disinfection tank with rapid conversion according to claim 4, characterized in that, The exhaust gas treatment assembly (53) includes a biogas pipe (531), a processor (532), and an aerial emission pipe (533). The biogas pipe (531) includes multiple pipes, which are respectively connected to different positions of the settling chamber (10) and the treatment chamber (20). One end of the processor (532) is connected to multiple biogas pipes (531) for treating the gas. The top of the processor (532) is connected to the aerial emission pipe (533) for discharging the treated gas into the high atmosphere.

6. A dual-use (normal and emergency) grid disinfection tank with rapid conversion according to claim 5, characterized in that, The water quality testing component (54) is a pipe structure, with one end extending out of the ground and the other end connected to the top of the water outlet component (40), for pumping out treated water from the water outlet component (40) for water quality testing.

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