37results about How to "Reduce silt" patented technology

Provided is a diesel engine exhaust gas purification device that can remove with high efficiency PM - in particular, the SOF portion thereof or sulfate components - in the exhaust gas of a diesel engine that uses, in particular, heavy oil or an even lower quality of fuel, and that can easily and reliably suppress the emission of materials that pollute the environment or materials that impact ecosystems. The exhaust gas purification device for a diesel engine that uses heavy oil or an even lower quality of fuel is characterized by a configuration in which an exhaust gas cooler is provided to an exhaust pipe that extends to the exhaust manifold of an engine; on the downstream side of the exhaust gas cooler, an electric precipitation means is provided for removing PM contained in the exhaust gas having SOF and ISF as main components; a branching part for diverting a portion of the exhaust gas as EGR gas is provided at the downstream-side exhaust pipe of the electric precipitation means; and the EGR gas is recycled by engine air-intake via an EGR pipe that extends to the branching part and an EGR valve.

The invention discloses a giant freshwater prawn breeding method and belongs to the technical field of breeding of aquatic organisms such as shrimps in agricultural aquaculture. Giant freshwater prawns with a certain density are bred in a pond with certain specifications; fishes are put into the pond at proper time for mixed breeding; feeding and management of water quality and disease control are carried out during breeding and the whole giant freshwater prawn breeding method can be comprehensively and effectively controlled. The method is simple to operate, low in cost and has remarkable effect, obvious economic benefits and social benefits.

The invention discloses a rainwater flow-dividing type drainage device for sponge city construction. The rainwater flow-dividing type drainage device comprises a flow-dividing box shell, a flow-guiding filtering assembly, a sludge chamber, a water inlet pipe, a transmission box body and a drainage assembly, wherein a partition plate is arranged in the middle of the flow-dividing box shell to divide the flow-dividing box shell into a left rainwater treatment structure and a right rainwater treatment structure; a well lid is arranged at the upper end of the left part of the flow-dividing box shell; the flow-guiding filtering assembly is installed below the well lid; the water inlet pipe is arranged at the upper end of the right part of the flow-dividing box shell; the transmission box body is installed below the water inlet pipe; the sludge chamber is arranged at the lower end of the right part of the flow-dividing box shell; and the drainage assembly is arranged on the right side of theflow-dividing box shell, communicates with the box wall on the right side and relatively located above the sludge chamber.

The invention relates to a revetment structure composed of plastic steel plate piles and concrete. The revetment structure comprises plastic steel plate piles and a concrete coping, wherein the plastic steel plate piles are connected through a connector having two mutually matched ends; the concrete coping is preformed and can be stably buckled with the upper ends of the plate piles. The revetment structure can be used for revetments of rivers or lakes, is safe and stable, high in construction speed, low in construction cost, environment-friendly and pollution-free, less in influence on the surrounding environment, and long in durability, can be further used for resisting the seepage of embankments and dike bodies of rivers and protecting dams.

The invention discloses a method and a device for collecting and measuring leakage water of a large-scale rice field undisturbed soil column. The method comprises the following steps: A, determining a leakage liquid standard collection area according to a base area of the soil column; B, embedding a conic filter at the middle position of the soil column, where an underlying surface is arranged, wherein the middle position is lower than the underlying surface; and completely collecting soil column leakage liquid inside the area at the bottom surface of the conic leakage filter; C. grooving to lead an aqueduct out from the flat surface of the underlying surface of the soil column by utilizing topographic fall head formed when the undisturbed soil column is distributed; and D. firstly opening an air vent of a measurement barrel to ventilate when the leakage liquid is collected, recording the scale of the measurement barrel at regular intervals, uniformly stirring a water sample by a glass rod passing through the air vent of a primary barrel, then opening a sampling pipe valve for sampling, and closing a drain pipe and the sampling pipe valve after water is completely drained, so as to finish the collection and the measurement of the leakage liquid. The device comprises three parts of the conic filter, the aqueduct and a measuring device. The method is feasible, is easy and simplein operation, and can be used for accurately determining the amount of the leakage liquid; and the obtained sample is high in reliability.

The invention relates to pipeline desilting equipment for hydraulic engineering and a using method, and is applied to the technical field of pipeline desilting, the pipeline desilting equipment comprises a water storage tank for receiving rainwater, the water storage tank is connected with a plurality of spraying assemblies for washing the inner wall of a pipeline, and the spraying assemblies are connected with the water storage tank through a water pump; the multiple spraying assemblies are sequentially arranged in the axial direction of the pipeline, and a trigger mechanism used for starting and stopping the water pump is arranged in the water storage tank. The pipeline dredging device has the effect of conveniently dredging the pipeline.

This application relates to a system for cleaning and desilting urban underground water pipes, and relates to the field of sewage pipe cleaning. It includes several inspection wells and sewage pipes connected between adjacent inspection wells. There is a sewage channel under the sewage pipe, and the sewage channel and There are opening and closing components between the sewage pipes, a drainage channel is provided under the sewage channel, and several drainage holes connected with the drainage channel are opened on the sewage channel, a flushing pipe is provided in the sewage channel, and a scraper assembly is provided in the sewage channel. The scraper assembly includes a scraper slidably connected along the length direction of the sewage channel and a driving part for driving the scraper to slide, and the drainage channel is communicated with a drainpipe extending to the road surface. The application has the functions of reducing the silt adhering to the inner wall of the pipeline and improving the cleaning and dredging effect of the underground water pipeline.

The invention discloses a rainwater diversion discharge device for sponge city construction, which comprises a diversion box shell, a diversion filter assembly, a sludge chamber, a water inlet pipe, a transmission box body and a drainage assembly, wherein the diversion box shell is arranged in the middle There are partitions to divide it into left and right rainwater treatment structures. A manhole cover is arranged on the upper end of the left part of the diversion box shell, a diversion filter assembly is installed under the manhole cover, and a water inlet pipe is arranged on the upper end of the right part of the diversion box shell. A transmission box is installed under the water inlet pipe, the sludge chamber is set at the lower end of the right part of the splitter box shell, and the drainage assembly is set at the right side of the splitter box shell, communicates with the right side box wall, and is relatively located in the sewage Above the mudroom.

The invention discloses an integrated prefabricated lighting inspection well for automatic pollution discharge. The integrated prefabricated lighting inspection well comprises an inspection well body, a water outlet and a plurality of water inlets are formed in the inspection well body, the water outlet is connected with a water outlet pipeline, and the water inlets are connected with a water inlet pipeline; an impeller base is further arranged in the maintenance well body, one end of the impeller base is connected with an impeller, and the other end of the impeller base is connected with an energy storage device used for storing electric energy converted from rotating power of the impeller; one end of the impeller base is rotationally connected with the impeller through a rotating shaft, and a stator and a rotor are arranged in the impeller base and connected; and one end of the rotating shaft penetrates into the impeller base to be connected with the rotor, and the stator penetrates out of the maintenance well body through an electric wire to be connected with the energy storage device. The integrated prefabricated lighting inspection well for automatic pollution discharge is made of a plastic material, has high impact resistance and vibration resistance, can reduce silt formed by silt deposition at the water outlet due to slowing of water flow, realizes conversion from kinetic energy to electric energy, and realizes a power generation function.

This application relates to the technical field of flue gas treatment, and specifically discloses a high-temperature waste gas dedusting method, which includes the following steps: Step (1): Pass the flue gas from the bottom of the dedusting tower, and pass through the filter layer in the dedusting tower discharge from the top of the dedusting tower; step (2): while introducing flue gas into the dedusting tower, water is continuously poured down from the top of the dedusting tower; step (3): water is collected from the bottom of the dedusting tower, and The water that rains down from the top of the tower comes from the water collected at the bottom of the dedusting tower. By setting the filter layer to absorb the flue gas, when the flue gas passes through the filter layer, because the flue gas has a large contact area with the filter layer; and when the flue gas enters from the bottom of the dust removal tower, water pours down from the top of the dust removal tower, The contact between water and flue gas also has the effect of dust removal, which can improve the dust removal effect.

The present invention provides an exhaust gas purification device of a diesel engine, which can not only efficiently remove PM, especially SOF components and sulfate components in the exhaust gas of diesel engines using low-quality fuels below heavy oil, In addition, the outflow of environmental pollutants and substances that adversely affect the ecosystem can be easily and reliably suppressed. In the exhaust gas purification device of a diesel engine using low-quality fuel below heavy oil, a structure is formed: an exhaust gas cooler is installed on the exhaust pipe connected to the exhaust manifold of the engine, and the exhaust gas is cooled The downstream side of the electric dust collection device is provided with an electric dust collection unit, which is used to remove the PM contained in the exhaust gas mainly composed of SOF and ISF. A part of the exhaust gas is divided into a branch portion as EGR gas, and the EGR gas is returned to the intake air of the engine through the EGR pipe and the EGR valve connected to the branch portion.

The invention discloses a suspended solid (SS) filter, comprising a rectangular frame, a motor, wherein a transmission shaft penetrates through each of the left end and the right end of the rectangular frame, and a transmission wheel is mounted on each transmission shaft; a transmission chain is installed between the left and right transmission wheels, a brush scraping plate is fixed on the side of the transmission chain and can rotate together with the transmission chain; a plurality of brushings are arranged on the brush scraping plate and are perpendicular to the surface of the brush scraping plate; the motor is connected to the transmission shaft; a filtered mud collection box is arranged at one end of the rectangular frame, and a brush scraper for scraping off SS from the brushing isinstalled at the upper portion of the filtered mud collection box. The SS filter can adsorb and intercept SS in sewage, the concentration of SS in sewage filtered by the SS filter can be greatly reduced, and the problem of clogging does not occur during the filtering process; while SS is filtered, nutrients such as nitrogen and phosphorus carried in SS can be removed; a plurality of tree-structured brushing embedded in each other can improve the SS filtration efficiency.

The invention provides a powerless-aeration biological filtering bed, which is applied to an urban domestic sewage discharging port and is used for increasing dissolved oxygen in discharged domestic sewage and promoting degradation of pollutants in sewage. The powerless-aeration biological filtering bed comprises a vertical sewage containing pipe and a biological filtering bed, wherein water enters from the bottom part of the vertical sewage containing pipe and is discharged from the top part of the vertical sewage containing pipe; the biological filtering bed consists of more than two layers of pallets with uniform water-permeable holes in the bottom parts. By virtue of the pressure of a sewage discharging pipeline, sewage enters from the bottom part of the vertical sewage containing pipe and flows into the biological filtering bed from the top part of the vertical sewage containing pipe after being collected. The powerless-aeration biological filtering bed provided by the invention has the advantages that the shape is matched with the environment of the sewage discharging port, the size can be adjustd according to the flow rate of sewage of the sewage discharging port, power is not needed for driving, the aeration efficiency is high, and the powerless-aeration biological filtering bed can be combined with other water-environment restoration technologies can be achieved.

The invention discloses a pond food field area contamination drainage system with the back flushing function. The system is characterized in that the contamination drainage system is composed of a pond bottom contamination drainage system and a back flushing system. When the contamination drainage system is used for feeding in a food field area, contamination is drained every other 3-5 days. According to the specific method, firstly, a contamination drainage valve is opened for draining contamination, then, the contamination drainage valve is closed, a back flushing pump is started, contamination drainage is performed again after the back flushing pump is turned off, and organic matter at the pond bottom of the food field area can be basically drained through 2-3 times of back flushing contamination drainage. According to the system, contamination drainage is thorough, accumulation of the organic matter at the bottom of the pond food field area is little, time is short every time contamination drainage is performed, fish feeding is not affected, good pond water quality can be kept, and the yield and the benefits of pond cultivation are increased; back flushing contamination drainage is continuously performed in the cultivation period, sludge at the pond bottom can be kept little for a long time, the effective water body of a pond is large, it is beneficial to yield increase, and besides, the pond does not need frequent large-scale dredging, and production cost can be reduced.