13 results about "Stormwater pollution" patented technology

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 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 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 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.

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 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 application relates to the technical field of environmental data processing, and discloses a monitoring, early warning and regulation system applied to urban rainwater pollution prevention and control, which comprises an online monitoring system, a river-inlet discharge port monitoring unit and a receiving water body monitoring unit, a rainfall monitoring unit, a discharge port monitoring and early warning model and a river-inlet discharge port interception and scheduling system. According to the classified sampling parameters of drainage in a rainfall event, rainwater can be finely classified into initial rainwater, mid-term rainwater and late rainwater; through intelligent regulation and control of the river-inlet discharge port interception gate and fine processing, the rainwater pollution prevention and control cost can be reduced and the efficiency can be improved, and scientific and intelligent rainwater pollution diversion can be realized.

The invention discloses a rainwater well quick drainage system. The rainwater well quick drainage system comprises a well cover, an anti-fouling net, a first cylinder wall, a well frame, a first funnel, a second cylinder wall, a hinge baffle, a water permeable plate, a connecting rod, a spring, a second funnel, a well wall, a net flow pipeline, a power generator and a blow-off pipeline. When the rainwater well quick drainage system works, rainwater forms rotational flow to be fed through the turbine-shaped well lid, after the rainwater is filtered through the antifouling net, initial rainwater is guided into the blow-off pipeline through the cut-off device, and clean rainwater flows into the clean flow pipeline to drive the hydroelectric generator to generate electricity. The system monitors data in real time through water level, flow velocity, displacement and water flow sensors and transmits the data to the management platform, and the electric push rod can be remotely controlled to open the well lid. The system is high in drainage efficiency and capable of effectively preventing blockage and waterlogging, initial rainwater pollution control and energy self-sufficiency are achieved, the operation cost is reduced, the maintenance and management efficiency is improved, and the service life of the catch basin is prolonged.

The application discloses a kind of urban road rainwater runoff grading treatment system and method, it is related to urban rainwater pollution treatment technical field.For the problem that existing system is difficult to monitor multiple index water quality in real time, accurately identify pollution degree and lack of dynamic of shunt control, the system is equipped with multi-source spectral water quality monitor at pipe network end, real-time monitoring turbidity, COD, TOC and heavy metal concentration, control center accesses rainfall intensity data, calculates pollutant load instantaneous rate by weighted summation formula L , according to L Comparison result of threshold value, rainwater is distributed to enhanced treatment unit containing cyclone grit, electrochemical degradation of heavy metals and chemical flocculation unit, biological aerated filter system or horizontal flow sedimentation tank in controllable shunt module in shunt well.Mainly used to realize rainwater quality efficient treatment and resource recycling, guarantee the safety of receiving water body.

This invention discloses a high-performance adsorption building material and a rainwater purification method, belonging to the field of permeable brick technology. The high-performance adsorption building material includes a permeable brick body, which comprises a sealed, impermeable outer shell. Inside the sealed, impermeable outer shell, from top to bottom, are arranged a surface layer, a middle layer, an isolation layer, and a bottom layer. The surface layer is a filtration and adsorption layer used for gradient filtration of rainwater and interception of large particles. The middle layer is an adsorption and purification layer used for gradient filtration to achieve coarse and fine adsorption of rainwater pollutants. The bottom layer is a collection and diversion layer that uses a grid to centrally collect and export rainwater. The isolation layer separates the middle layer from the bottom layer, temporarily storing rainwater and supporting the middle and surface layers. The purpose of this invention is to provide a high-performance adsorption building material and a rainwater purification method, solving the problems of traditional permeable brick materials having a simple structure, poor rainwater purification effect, and inability to collect and reuse rainwater.

This invention relates to the field of pollution control technology and discloses an ecological method for controlling initial rainwater pollution throughout its entire process. The method includes: identifying a target control area and pollution control system; identifying multiple experimental simulation area groups; obtaining multiple matching nodes based on a set of control parameters; constructing a target monitoring environment based on the matching nodes; obtaining target monitoring parameters based on the target monitoring environment; obtaining reference decontamination assessment values ​​using the target monitoring environment and a water quality testing unit; identifying a target decontamination fitting parameter database based on the reference decontamination assessment values ​​and the target monitoring parameters; obtaining target area monitoring parameters and reference monitoring parameters for the target control area; and retrieving target control parameters from the target decontamination fitting parameter database based on the target area monitoring parameters and reference monitoring parameters, thereby achieving initial rainwater pollution control in the target control area. The main objective of this invention is to improve the accuracy of initial rainwater pollution control.