5results about How to "Reduce sediment content" patented technology

The present application belongs to the technical field of groundwater sampling, and particularly relates to a method for preventing layer mixing during groundwater sampling in a water well, comprising the following steps: injecting clean water into the sampling water well and flushing the well wall, and then pumping out the mixed water at the bottom of the sampling water well; setting a blocking device in the sampling water well to intercept the seepage water above the sampling layer; setting a water collector below the blocking device in the sampling water well, with the tube mouth of the water collector leaning against the well wall to collect the seepage water; after sampling is completed, the tube mouth of the water collector is closed, the blocking device is removed, and the water collector is recovered to complete the sampling. By means of the blocking device, the seepage water above the sampling layer is guided away along the blocking device, so that the water collected from the sampling layer is relatively accurate, and layer mixing is avoided. By means of the water collector leaning against the well wall to collect water, insertion into the well wall is avoided, the content of silt in the sampled water is reduced, and the water collector and the water pump can be prevented from being blocked.

The application discloses a kind of for urban river channel silt reduction construction method, adopt rubber dam and store pit combination, store pit reduces water flow velocity, changes vertical distribution of silt, and makes silt particles concentrate downward, rubber dam adopts arch design, while weakening the impact of water flow on rubber dam, the silt in the silt source of upstream river channel is intercepted, so that it is accumulated to selected section convenient for mechanical dredging;Then, using the way of mechanical dredging, the sludge accumulated is removed for treatment after processing.The application has the advantages of simple and fast design, and the designer only needs to record the data such as river width, normal water level height, water flow velocity and model scale test, so as to carry out the design calculation of actual engineering.The method improves the dredging efficiency, reduces the silt accumulation of urban internal river channel, reduces the traffic pressure of urban internal river channel, and saves manpower and material resources.

The application relates to the technical field of water pollution treatment, in particular to a zinc-containing wastewater treatment and recycling device for electroplating production lines. The device comprises a shell, a water inlet part and a first water outlet part are arranged on the shell, a sedimentation shell and a filter are arranged in the shell, interval distributed sedimentation chambers are arranged in the sedimentation shell, adjacent sedimentation chambers are communicated through connecting channels, the sedimentation shell divides the internal space of the shell into two parts of a first chamber and a second chamber, the filter is arranged in the second chamber, and the first chamber and the second chamber are communicated with adjacent sedimentation chambers through the connecting channels. The zinc-containing wastewater is provided with a chemical precipitation space through the sedimentation chambers, so that the zinc content and the sediment content in the wastewater are reduced, the filter is combined to carry out membrane separation treatment on the wastewater, the impurities in the wastewater are deeply purified, the wastewater reaches the recycling standard, the probability that the sediment blocks the filter is reduced, and the wastewater treatment effect is improved.

This application relates to a sponge city infiltration and drainage system, including a first drainage unit, drainage wells, a water storage tank, and a second drainage unit. The first drainage unit includes a permeable pavement and multiple infiltration pipes. Along a first direction, the multiple infiltration pipes are located at the lower part of the permeable pavement, and the first direction is the direction of gravity. The drainage wells are connected to the permeable pavement through the infiltration pipes. There are multiple drainage wells, which are connected to each other through a main drainage pipe. A convection mechanism is installed in the drainage well, which is configured to convect at least a portion of the rainwater entering the drainage well to reduce sediment deposition in the drainage well. The water storage tank is connected to the drainage wells through a connecting pipe. The second drainage unit includes a drainage channel and a sand discharge port. The drainage channel has an inlet end and an outlet end. The inlet end is located on the road surface, and the outlet end is connected to at least a portion of the drainage wells. The sand discharge port is located on the path between the inlet end and the outlet end, and is configured to filter sediment from the water entering from the inlet end.

The utility model discloses a building engineering drainage device relates to building engineering technical field, including the vehicle body, the surface of vehicle body is provided with pumping mechanism, the surface of vehicle body is provided with filter mechanism. The utility model discloses through setting up the battery for sewage pump and drainage pump power supply in the inside of vehicle body, setting the fixing base on the surface of vehicle body, make to the sewage pump is fixed, prevent the sewage pump activity when vehicle body removes, through placing sewage pump in the frame, the frame all around with bottom end all is provided with the screen, is used for the filtration of big granular solid, will the clamping block aim at the slurry pump, promotes sewage pump to displace downward, make the clamping block along slurry pump into annular groove, frame can be fixed at this time rotates, and the model of sewage pump is 65WQ30 40 7.5, can cope with silt sewage, and the water level is still can drain when lower end pumping makes, adapts the waterlogging environment of site, has improved the adaptability of device.