42 results about "Stormwater pollution" patented technology

The invention discloses an urban road rainwater runoff stage treatment system and method, and relates to the technical field of urban rainwater pollution treatment. In order to solve the problems that an existing system is difficult to monitor multi-index water quality in real time, the pollution degree is accurately recognized, and distribution control lacks dynamics, the system is provided with a multi-source spectrum water quality monitor at the tail end of a pipe network, turbidity, COD, TOC and heavy metal concentration are monitored in real time, rainfall intensity data are accessed into a control center, the pollutant load instantaneous rate L is calculated through a weighted summation formula, and the real-time monitoring of the pollution degree is achieved. A controllable flow distribution module in the flow distribution well distributes the rainwater to an enhanced treatment unit, a biological aerated filter system or a horizontal flow sedimentation tank, wherein the enhanced treatment unit comprises a rotational flow sand setting unit, an electrochemical heavy metal degradation unit and a chemical flocculation unit. The system is mainly used for realizing quality-divided efficient treatment and resource recycling of rainwater and guaranteeing the safety of a receiving water body.

The invention discloses a rainfall sampling device and method for meteorological monitoring based on the Internet of Things, and relates to the technical field of rainfall sampling, the rainfall sampling device comprises a supporting outer frame, and the inner wall of the supporting outer frame is provided with a metering tipping bucket mechanism used for qualitatively and quantitatively detecting rainfall. By arranging the collecting mechanism, suspended particles and atmospheric pollutants in rainwater can be intercepted and sampled in real time in the initial rainfall stage, high-concentration pollutants carried in first rainfall are effectively captured, the collecting mechanism automatically switches sampling channels according to a preset time sequence sampling strategy, and the sampling efficiency is improved. According to the rainwater pollutant monitoring system and method, spatial partition and independent collection of pollutants in different time periods are achieved, cross contamination between samples is fundamentally eradicated, the time resolution and the sample purity of rainwater pollutant monitoring are improved, and high-fidelity data are provided for atmospheric sedimentation process analysis and non-point source pollution traceability.

The utility model discloses integrated equipment for water body detection and purification in the technical field of water body treatment, which comprises a box body, an air pump, a plant storage tank, a detection outer rod and an inner detection head, the air pump is communicated with aeration pipes, a propelling nozzle and an air bag through pipelines, and a plurality of aeration pipes are arranged at the bottom of the box body. The left side and the right side of the back face of the box body are each provided with a plurality of propelling nozzles, the two detection outer rods extend out of the left side and the right side of the box body respectively, and an inner detection head is arranged in the box body. Different plants can be planted on the integrated floating island of the device, so that the purpose of purifying various pollutants is achieved; meanwhile, an aeration function is also added, so that ultramicro bubbles can be released underwater; the device can also detect the water quality and hydrology of a water body, and can also detect the water quality of initial rainwater by extending the detection outer rod into a river rainwater discharge port.

The invention relates to the technical field of pollution control, and discloses an ecological whole-process initial rainwater pollution control method, which comprises the following steps: determining a target control area and a pollution control system, determining a plurality of experimental simulation area groups, obtaining a plurality of matching nodes based on a control parameter set, constructing a target monitoring environment based on the matching nodes, and monitoring the target monitoring environment according to the target monitoring environment. Acquiring target monitoring parameters based on a target monitoring environment, acquiring a reference decontamination evaluation value by using the target monitoring environment and a water quality detection unit, determining a target decontamination fitting parameter database based on the reference decontamination evaluation value and the target monitoring parameters, and acquiring target area monitoring parameters and reference monitoring parameters of a target management and control area, and based on the target area monitoring parameters and the reference monitoring parameters, target management and control parameters are retrieved from the target decontamination fitting parameter database, and initial rainwater pollution management and control of the target management and control area are realized. The main purpose of the invention is to improve the accuracy of pollution management and control of initial rainwater.

The invention provides a municipal road drainage method, belongs to the technical field of municipal drainage, and particularly solves the technical problems that pipe explosion is caused by pressure fluctuation of a traditional drainage pipe network and initial rainwater pollutes a receiving water body. According to the technical scheme, the method comprises the steps that pressure pulsation amplitudes of all inspection wells of a rainwater pipe network are monitored in real time, and the inspection well with the maximum pulsation amplitude serves as a dynamic control node; starting a pressure wave generator at the upstream of the node to output a reverse-phase pressure wave; when the pulsation amplitude is larger than 25% of the hydrostatic pressure, the valve opening degree of a water inlet / water outlet communicating pipe section is periodically adjusted; initial rainwater is guided into a sewage treatment plant and later rainwater is discharged into a receiving water body through opening and closing control of a shutoff valve and a diverter valve; the sewage treatment aeration intensity is controlled based on the vibration energy proportion; and when the pulse amplitude of the new inspection well exceeds 20 + / -2% of the current node, the control node is updated. The method can effectively stabilize the pressure of the pipe network and realize accurate diversion of rain and sewage, and is mainly used for improving the impact resistance and environmental protection level of an urban drainage system.

The invention relates to the technical field of initial rainwater pollution treatment, in particular to an integrated initial rainwater process treatment structure and method. According to the technical scheme, the integrated initial rainwater process treatment structure comprises an integrated box body, two groups of inspection manholes, a pretreatment assembly, a physical treatment assembly, a biochemical treatment assembly and a drainage assembly, and the inspection manholes are formed in the top surface of the integrated box body; compared with a traditional integrated initial rainwater process treatment structure, the modes of water quality purification and process treatment on polluted water are few, an initial rainwater filtering device on the market only treats solid pollutants, the blocking phenomenon exists after long-term use, the water quantity and the water quality are reduced, and the water quality is affected. According to the integrated initial rainwater process treatment structure, solid pollutants and soluble pollutants can be removed at the same time, meanwhile, the blocking phenomenon caused by long-term use is avoided, and pollutants carried in initial rainwater are prevented from entering a water body.

The invention belongs to the technical field of catch basin control, and particularly relates to an intelligent catch basin control system and method for municipal rainwater and sewage. Ammonia nitrogen concentration and water level change in a catch basin are monitored in real time during rainfall, and an initial rainwater pollution peak is accurately recognized through a double-threshold judgment mechanism of the ammonia nitrogen concentration and the water level change; the sewage outlet valve leading to the sewage treatment plant is opened only when the pollution peak is recognized, accurate interception and treatment of polluted rainwater are effectively achieved, meanwhile, the initial opening degree of the sewage outlet valve is dynamically corrected in the initial rainwater pollution peak period, the responsiveness of a drainage system to the overflow risk and the sewage treatment efficiency are remarkably improved, and the safety of the drainage system is improved. The ammonia nitrogen concentration decline gradient is continuously monitored in the sewage diversion process, when the gradient is lower than a set attenuation threshold value, the opening degree of a sewage outlet valve is synchronously adjusted and reduced, the pollution peak ending opportunity can be accurately recognized, high-pollution rainwater is prevented from being directly discharged without being treated, and meanwhile clean rainwater is prevented from entering a sewage system by mistake.

The application discloses a kind of lake body slope bank ecological water environment restoration ion separation system and its restoration method, belong to ecological water environment restoration technical field.The system is set on the slope surface from lake side road to lake surface, including by high and low sequentially set on the slope surface, and all longitudinal distribution sewage sedimentation ditch and multistage ion separation ditch;Sewage sedimentation ditch and each stage ion separation ditch are sequentially communicated by drain pipe series connection;The ion separation ditch of the bottom of slope surface is communicated with lake surface by overflow, and by first sedimentation then multistage delayed ion separation method, the problem of dynamic rainwater pollution on the slope surface between city road and lake surface is solved, and the ecological water environment restoration is easy to operate and implement.

The catch basin capable of reducing the first rain pollutants comprises an intercepting chamber, a purifying chamber and a water outlet channel, and the intercepting chamber is used for collecting rainwater; the purifying chamber is communicated with the intercepting chamber and comprises a purifying area, and an active filler and a filtering group material which are arranged in the purifying area at intervals; the water outlet channel is communicated with the purification chamber; and when the water level in the intercepting chamber rises, the rainwater with high pollution concentration in the intercepting chamber flows into the purifying chamber, is purified by the active filler and the filter group material in the purifying area and flows to the water outlet channel. When the water level in the intercepting chamber rises, rainwater with high pollution concentration flows into the purifying chamber, the rainwater in the purifying area is purified by the active filler and the filter group material, various pollutants such as suspended solids, heavy metals and organic pollutants in the water are removed, and the pollutant concentration of the rainwater is remarkably reduced. And the purified rainwater is discharged through the water outlet channel and enters an urban drainage system or a natural water body. Therefore, initial rainwater pollutant concentration is reduced, and urban black and odorous water is treated.

The utility model belongs to the field of environmental protection and water supply and drainage engineering technology, especially relate to a kind of initial rainwater regulating reservoir liquid level intelligent regulation and control device, including water storage pool body, cover and baffle etc., cover is installed in the upper portion of water storage pool body, and the upper opening of water storage pool body is blocked, baffle is fixedly connected in the inside of water storage pool body, and the inside of water storage pool body is separated into two independent water storage spaces. Two independent water storage spaces are formed by the baffle, the water quality detector is used to monitor the rainwater pollution degree in real time, and the electromagnetic valve one and the electromagnetic valve two in the intelligent regulation and control assembly are used to realize the automatic conduction of the corresponding channel of the shunt pipe, so that the rainwater is introduced into the corresponding water storage space through two water inlet pipes, effectively solving the problems of inaccurate identification, unclear classification and lack of targetedness in traditional initial rainwater control, and realizing efficient classification collection and accurate management of rainwater with different pollution degrees.

The utility model discloses a guest water and rainwater pollution control facility, which belongs to the technical field of water ecological management and comprises an energy dissipation sedimentation tank and a percolation ditch. The energy dissipation sedimentation tank is used for carrying out energy dissipation and filtering pretreatment on peripheral guest water and rainwater; the percolation ditch is communicated with the energy dissipation sedimentation tank through the communication pipeline, guest water and rainwater pretreated by the energy dissipation sedimentation tank can be collected by the perforated collection pipe buried in the percolation ditch to a downstream rainwater recycling facility to be recycled, and can be subjected to infiltration purification in the percolation ditch to supplement underground water. And the water which is not infiltrated in time can overflow into a downstream rainwater recycling facility along the slope of the surface of the infiltration ditch. According to the guest water and rainwater pollution control facility, the problems of runoff pollution and water accumulation caused by the fact that peripheral guest water and rainwater in many areas cannot be well controlled are solved, the guest water and rainwater pollution control facility can be well matched with other rainwater recycling facilities, the application range is wide, and the rainwater treatment process meets the requirements of green ecological facilities.

The invention provides an anti-pollution construction device and method for an ancient building roof structure, and belongs to the technical field of roof construction. An anti-pollution construction device of an ancient building roof structure comprises two vertical construction rods and transverse construction plates, and further comprises a transverse cylinder, the transverse cylinder is located below the bottom of the first transverse construction plate installed above the vertical construction rods, a cavity is formed in the transverse cylinder, an opening communicated with the cavity is formed in the transverse cylinder, and the vertical construction rods are arranged on the vertical construction rods. A connecting shaft is rotationally arranged on the transverse cylinder, rainproof shielding cloth is connected to the connecting shaft in a winding mode, and a balance weight lever is fixed to the end, extending to the outer portion of the transverse cylinder from the opening, of the rainproof shielding cloth; through ingenious cooperation of the stable construction platform, the tough and durable rainproof shielding cloth, the balance weight lever and the connecting shaft, rapid and convenient shielding and fixing of the repaired position of the ancient building roof are achieved, rainwater pollution is effectively avoided, the construction efficiency is improved, and the cost is reduced.

The invention belongs to the field of artificial intelligence construction monitoring, and discloses a polluted site construction monitoring method and system based on artificial intelligence. The method comprises the following steps: dynamically arranging monitoring point positions, and collecting monitoring data of a construction site in real time according to the monitoring point positions; determining abnormal information according to the preprocessed rainwater pollutant monitoring data, and positioning a pollution source according to the abnormal information and the preprocessed construction activity data; inputting the preprocessed monitoring data into a preset pollutant migration prediction model, and outputting a pollutant migration prediction result in future K hours; and matching corresponding prevention and control measures from a preset prevention and control strategy library according to the migration prediction result, the abnormal information and the pollution source information. According to the invention, accurate traceability is realized, the problem of difficult responsibility traceability is solved, prevention and control resources can be accurately delivered to the most required time and area, and the management efficiency and the cost benefit are greatly improved.

The utility model discloses a kind of purification devices achieving shunt treatment runoff rainwater pollution. Rainwater contains organic pollutants, nitrogen, phosphorus etc. after being treated by rainwater garden, concentration is still relatively high. The utility model includes rainwater garden, plants J1 are sequentially arranged from top to bottom, planting soil J2, composite filler J3, cobblestone J4;Permeable geotextile K1 is arranged between planting soil J2 and composite filler J3, between composite filler J3 and cobblestone J4;Cobblestone J4 bottom is provided with impermeable membrane K2;Rainwater garden is provided with liquid level control well B inside, overflow well A is arranged in liquid level control well B;Perforated pipe F1 is arranged in cobblestone J4, perforated pipe F1 is communicated to the inside of liquid level control well B, and liquid level control well B is communicated to reuse water tank C by water outlet pipe F3;Overflow well A is communicated to rainwater inspection well by water outlet pipe F2. The utility model reduces the concentration of pollutants in discharged rainwater, and relieves water environmental pollution.

The utility model discloses a noise reduction and sound insulation aluminum alloy window which comprises a window frame, a sash frame is arranged in the window frame, two pieces of glass are arranged in the sash frame, a PVB film is fixedly connected between the two pieces of glass, and sealing rubber strips are fixedly connected to the sides, away from the PVB film, of the outer walls of the two pieces of glass. The bottom of the sealing rubber strip is fixedly connected to the outer wall of the sash frame, and the drainage structure is arranged at the bottom of the inner wall of the window frame. The noise-reducing and sound-insulating aluminum alloy window relates to the technical field of aluminum alloy windows, and achieves the purposes of preventing rainwater accumulated at the bottom of the window frame from flowing back into a room through the cooperation of the drainage groove, the filter screen, the barrier plate, the snap spring and the limiting rod, improving the drainage effect of the noise-reducing and sound-insulating aluminum alloy window, not only ensuring that the indoor environment is not polluted by the rainwater, but also ensuring that the indoor environment is not polluted by the rainwater. And normal work of indoor workers cannot be affected by backward flowing of rainwater.

The utility model discloses a gutter inlet structure with a silt settling function, which comprises a rainwater tank body arranged on a road surface, a grate is covered on the top of the rainwater tank body, the rainwater tank body sequentially comprises a filtering area and a silt settling area from top to bottom, the filtering area is detachably connected in the rainwater tank body, the bottom of the silt settling area is communicated with soil through a first pipeline, and the silt settling area is communicated with soil through a second pipeline. One side of the upper part of the rainwater tank body is communicated with a clear water area; the lower part of the clear water area is communicated with a rainwater pipe network through a second pipeline. In the initial stage of rainfall, impurities and silt carried by rainwater can be effectively intercepted, the drainage capacity of the gutter inlet is maintained, the gutter inlet connecting pipe is prevented from being blocked, and initial rainwater pollution is relieved to a certain degree.

The application discloses a kind of oil refining enterprises initial rainwater collection and processing system, it is related to initial rainwater runoff processing technical field, including rainwater collection system, oil removal system and multistage soil infiltration system connected in turn;The rainwater collection system is used to deliver the sewage collected to oil removal system;Grid is equipped on the water delivery path in the rainwater collection system;Coarse granulation oil removal zone and oil-water separation zone are equipped in the oil removal system, and the sewage delivered by the rainwater collection system sequentially passes through coarse granulation oil removal zone and oil-water separation zone;The multistage soil infiltration system includes plant layer;The oil-water separation zone is used to deliver the sewage remaining after separating oil pollution to the plant layer.Form a kind of physical-chemical-ecological combined processing system, can realize the complementary of single process, fill the blank of oil refining enterprises initial rainwater pollution.

The invention discloses a purification device and method for treating runoff rainwater pollution. After the rainwater is treated by the rainwater garden, the concentrations of organic pollutants, nitrogen, phosphorus and the like contained in the discharged rainwater are still high. The system comprises a rainwater garden, and plants, planting soil, composite filler and cobblestones are sequentially arranged in the rainwater garden from top to bottom; permeable geotextile is arranged between the planting soil and the composite filler and between the composite filler and the cobblestones; impermeable films are arranged at the bottoms of the cobblestones; a liquid level control well is arranged in the rainwater garden, and an overflow well is arranged in the liquid level control well; perforated pipes are arranged in the cobblestones and communicated with the interior of a liquid level control well, and the liquid level control well is communicated with a recycling water tank through a water outlet pipe. The overflow well communicates with the rainwater inspection well through a water outlet pipe. Initial rainwater is stored in the rainwater garden, rainwater in the middle and later periods of rainfall flows out through the overflow well, the concentration of pollutants in the discharged rainwater is reduced, and water environment pollution is relieved.

A rainwater drainage device for a bridge comprises an upper leading-in part, a flow dividing pipe is arranged below the upper leading-in part, an overflow hole is formed in one side of the flow dividing pipe, and an overflow channel is arranged below the overflow hole; a treatment part is arranged below the shunt pipe, the treatment part comprises a treatment pipe communicated with the shunt pipe, a lead-in cavity is formed in the upper part of the treatment pipe, a middle pipe is arranged below the lead-in cavity, a reflux cavity is formed in the bottom of the middle pipe, and a filter medium layer is arranged on the outer side of the middle pipe; a leading-out cavity is arranged above the filtering medium layer, an external flow channel is arranged on the outer side of the leading-out cavity, and the leading-out cavity is communicated with the external flow channel through a plurality of external flow holes. According to the device, pre-collection is conducted through the upper guide-in part, unsmooth guide-out when water flow is too large is avoided through the overflow hole and the overflow channel in the lower part, and refined filtering treatment is conducted through the treatment part generally, so that rainwater is prevented from polluting the environment.

The present invention discloses a comb-tooth plate bridge expansion device with a waterproof structure. A water retaining plate is vertically welded to the edge of the solid plate of the span plate. The water retaining plate as a whole always covers the beam seam between the bridge sections. The edge of the slide plate is bent upward to form a bent portion. A second rubber plate is attached to the side of the bent portion away from the second anti-collision guardrail. The water retaining plate slides along the second rubber plate as the comb-tooth plate bridge expansion device expands and contracts. The present invention provides a water retaining plate and a bent portion on the span plate and slide plate of the comb-tooth plate bridge expansion device with a waterproof structure, as well as corresponding rubber plates. This allows the vast majority of rainwater on the bridge deck to pass through the bridge expansion device and be discharged from the bridge deck water collection well. This controls the flow of only a small amount of rainwater into the waterstop, ensuring that the waterstop is not easily filled with rainwater and causes rainwater to flow out, thereby preventing the surface of the cap beam pier from being polluted and damaged by rainwater.

The utility model discloses a landscape wall coping with functions of a lamp belt groove and a water drip, which comprises a wall body base layer, an aluminum veneer is arranged above the wall body base layer, the two sides of the aluminum veneer are both provided with the water drip, the top of the aluminum veneer is connected with an aluminum veneer keel, the aluminum veneer is bent to form a mounting groove, and the aluminum veneer keel is connected with the lamp belt groove. The mounting groove is used for mounting a lamp strip, and a fixing structure is further arranged on one side of the aluminum veneer and used for fixing the coping structure. According to the utility model, the functions of preventing rainwater pollution and stably fixing the lamp strip can be conveniently and effectively realized.

The invention discloses an automatic rainwater collector, and relates to the technical field of rainwater collection, the automatic rainwater collector specifically comprises a filtering assembly and a storage assembly, the water outlet end of the filtering assembly is connected with the water inlet end of the storage assembly through a connecting pipe, and the filtering assembly comprises a filtering structure, a pre-storage box and a collecting hopper; the water inlet end of the pre-storage box is connected with a collecting hopper through a first water inlet pipe, and a flow meter and a rainwater pollutant detection sensor are arranged on the first water inlet pipe. According to the automatic rainwater collector, rainwater collected when the rainfall is small is temporarily stored through the pre-storage box, the rainfall entering the filtering structure is kept constant under the condition of different rainfall, then the filtering net ring can be driven by the filtered rainwater in the using process of the filtering assembly, and the situation that the rainwater enters the filtering structure when the rainfall is small is avoided. When rainfall is large, impurities deposit on the filter screen ring, use of the filter screen ring is affected, when rainfall is large, the pre-storage box can collect part of rainwater, and the rainwater collection amount of the rainwater collector is increased.

The utility model discloses a pollutant in-situ purification device which comprises a shell, the top of the shell is open, a sewage inlet pipe is installed on the left side of the shell, a first flow dividing ecological filter layer is installed in the shell, and ladder ecological filter layers are sequentially arranged on the first flow dividing ecological filter layer downwards. According to the utility model, the sewage is shunted to two sides through the first shunting ecological filtering layer and is primarily filtered, particle impurities left on the first shunting ecological filtering layer are continuously flushed along with the sewage and are discharged to two sides, then the sewage flows downwards, and impurities and harmful substances in the sewage are continuously filtered through the stepped ecological filtering layer; finally, the filtered sewage flows into a membrane filter for reaction filtration, harmful substances in the sewage are efficiently filtered and removed, and then treated harmless water flow is converged into a river, so that the device has the advantages of effectively purifying rainwater pollution caused by urban first rain and protecting a river water source.

The invention relates to the technical field of rainwater collection and utilization, and provides a rainwater collection and recycling treatment device and method.The rainwater collection and recycling treatment device comprises a water collecting well, a water storage well and a delayed water collecting assembly, the water collecting well is arranged on one side of a road surface and used for collecting rainwater and discharging the rainwater to a road drainage system, and the water storage well is arranged on the other side of the road surface; the water storage well is arranged underground, and after the water level in the water collecting well rises to the height making contact with the delay floating ball, the delay floating ball can rise under the action of buoyancy so as to drive the swing rod to swing and enable the valve column to be pulled out of the connecting channel, and therefore the water collecting well can drain water into the water storage well. Through the delayed water collecting assembly, rainwater with poor water quality in the initial stage of rainfall is prevented from entering the water storage well, the rainwater stored in the water storage well is mainly relatively clean rainwater in the middle stage of rainfall, and the water quality of the collected rainwater is improved. According to the technical scheme, the technical problems that in the prior art, the pollutant content of initial rainwater is high, the water quality is poor, and the use scene is limited are solved.

The invention discloses a high-transparency super-hydrophobic coating for an outdoor atmosphere laser radome and a preparation method of the high-transparency super-hydrophobic coating. The high-transparency super-hydrophobic coating comprises a doping type modified silicon dioxide base layer, a composite coarse structure layer and a low-surface-energy modified layer which are sequentially formed on the surface of a glass base material. The doped modified silicon dioxide base layer is formed by in-situ growth of a silicon dioxide precursor, a nano zinc oxide dopant and a modifier, the composite coarse structure layer is formed by high-temperature annealing treatment of candle ash, and the low-surface-energy modified layer is formed by a composite low-surface-energy modifier. The coating has high light transmittance (greater than or equal to 90%) and excellent super-hydrophobic performance (static contact angle is greater than or equal to 160 degrees), has excellent mechanical stability and weather resistance, can effectively prevent laser radar signal attenuation caused by rainwater and pollutants, prolongs the service life of a radome, and is economical in preparation process and easy to industrialize.

The application provides a municipal road drainage method and belongs to the technical field of municipal drainage. The technical scheme points include the following: real-time monitoring of the pressure pulsation amplitude of all inspection wells of the rainwater pipe network, taking the inspection well with the maximum pulsation amplitude as a dynamic control node; starting the pressure wave generator upstream of the node to output a reverse pressure wave; when the pulsation amplitude is greater than 25% of the hydrostatic pressure, periodically adjusting the valve opening degree of the water inlet / outlet connecting pipe section; through the opening and closing control of the intercepting valve and the shunt valve, the initial rainwater is introduced into the sewage treatment plant, and the later rainwater is discharged into the receiving water body; based on the vibration energy ratio, the sewage treatment aeration intensity is controlled; and when the pulsation amplitude of a new inspection well is 20±2% higher than the current node, the control node is updated. The method can effectively stabilize the pipe network pressure and realize accurate rainwater and sewage shunting, and is mainly used for improving the impact resistance of the urban drainage system and the environmental protection level.

The utility model relates to the technical field of power equipment, in particular to a sealing structure of a gas relay. Comprising a relay body, a cover body and a sealing assembly, the cover body is provided with an open containing cavity, the relay body is covered with the cover body, the sealing assembly is arranged between the cover body and the upper surface of the relay body in the circumferential direction of the open end of the cover body, the sealing assembly comprises a sealing ring and a fixing ring, and the sealing ring is arranged on the inner side wall of the cover body; the end of the fixing ring protrudes out of the end face of the open end of the cover body, and the fixing ring is connected with the inner side wall of the sealing ring and used for fixing the sealing ring. When the cover body covers the relay body, the sealing ring realizes sealing between the cover body and the relay body, and a probe and a deflation plug on the relay body are sealed in a sealing cavity formed by the cover body and the upper surface of the relay, so that the probe and the deflation plug are prevented from being damaged by external rainwater and pollutants; the sealing performance of the gas relay is improved, and the use safety is further improved.

The utility model discloses a biological purification system suitable for blocking and degrading initial rainwater pollution of rivers and lakes, which relates to the technical field of rainwater purification and comprises a rainwater stabilization pond and a biological purification pond, a siphon drain pipe is fixedly mounted at the bottom of the rainwater stabilization pond, and the water outlet end of the siphon drain pipe is connected with the biological purification pond; a water collecting groove is formed in the water outlet end of the biological purification tank and is connected with a river channel through a water outlet pipe; the biological purification tank is filled with mineral filler and is used for absorbing and degrading pollutants in the polluted rainwater; a gabion protecting net covers the top of the mineral filler and is used for preventing heavy rain from scouring the mineral filler; aquatic plants are planted above the gabion protection net and are used for filtering pollutants in rainwater; the bottom end of the rainwater stabilization pond is higher than that of the river channel, sewage in the rainwater stabilization pond flows into the biological purification pond through the siphon drain pipe, and purified clear water flows into the river channel. The system provided by the utility model can quickly and efficiently absorb, filter and degrade pollutants in the polluted rainwater.

An airport rainwater and sewage diversion treatment system includes a rainwater pipe, rainwater and sewage diversion facilities, a confluence treatment facility, and a centralized treatment facility. The rainwater and sewage diversion facilities are located on both sides of the open drainage ditch and include a limit trough, a clean water trough, and a sewage trough connected in sequence. The confluence treatment facility is located at the end of the rainwater and sewage diversion facility and includes a primary water inlet plate, a secondary water inlet plate, a water outlet plate, and a sludge well. The centralized treatment facility is located outside the end connecting channel and connected to the rainwater pipe. The centralized treatment facility includes a rainwater storage sedimentation tank, a filtration tank, and disinfection equipment in sequence. A pressurizing facility is located at the end of the disinfection equipment and connected to a water point. This system controls initial rainwater pollution at the airport while recycling rainwater resources, resulting in good environmental and economic benefits. Furthermore, the system is easy to deploy and highly applicable. It can be applied to new airports, airport renovations, and airport sponge city transformations.

The invention relates to the technical field of environmental data processing, in particular to a non-point source pollution regulation and rain flood stagnant storage method and system. The method comprises the following steps: preprocessing the pollutant concentration, pollutant accessibility and runoff volume of an obtained target pixel to obtain target feature data; inputting the target feature data into a trained accessibility classification model for classification to obtain a pollutant accessibility category; and determining a corresponding rainwater retention and pollutant treatment strategy according to the land utilization type corresponding to the target pixel, the pollutant accessibility type and the rainfall and the rainwater pollution degree detected by the intelligent cut-off device. Therefore, the problems of low rainwater collection efficiency, poor treatment effect, low utilization rate and the like of existing measures can be effectively solved.