5results about How to "Improve pollution interception effect" patented technology

The utility model relates to the technical field of municipal water supply and drainage pipeline, especially to a sewage intercepting trench in a culvert. The sewage intercepting trench in the culvert comprises: brick-laid side walls arranged at intervals along the leakage section of the existing retaining wall, river channel side walls arranged opposite to the brick-laid side walls, and prefabricated cover plates arranged on the top of the brick-laid side walls and the river channel side walls, a water outlet is formed between adjacent brick-laid side walls, and the river channel side walls are provided with waterproof structures. The sewage intercepting trench in the culvert provided by the utility model can alleviate the problem that sewage leakage from the retaining wall in the culvert is serious and it is difficult to trace the source and rectify.

The invention belongs to the technical field of vertical barrier materials, and particularly relates to a vertical antifouling barrier material and a preparation method and application thereof.The antifouling barrier material is prepared from, by mass, 10-15 parts of bentonite, 3-15 parts of gelling agent and 70-87 parts of in-situ soil, the gelling agent is prepared from activated red mud, blast furnace slag powder, silica fume and water glass, and the water glass is prepared from sodium silicate, sodium silicate and sodium silicate. By replacing cement with the gelling agent component, the adsorption capacity, the pollutant intercepting capacity and the early strength of the vertical antifouling barrier material are improved, a low-permeability antifouling barrier can be formed in a high-concentration organic pollution solution and a heavy metal pollution solution, pollutants are prevented from horizontally migrating along with underground water, and the pollution resistance of the vertical antifouling barrier material is improved. And thus, effective isolation management and control of the polluted site are realized. The vertical antifouling barrier material provided by the invention can be applied to a polluted site in which the underground water heavy metal concentration is greater than or equal to 20mg / L or the organic matter concentration is greater than or equal to 400mu g / L.

The utility model discloses a sponge facility rainwater collecting, purifying and recycling device. Comprising a grass planting ditch, a sunken greenbelt, an environment-friendly overflow well, a multi-stage purification pond and a water collection irrigation system, wherein the grass planting ditch is positioned on the sunken greenbelt close to the edge of the road so as to receive and transfer rainwater on the road and the greenbelt to the environment-friendly overflow well; a mud settling well is arranged at the lower part of the overflow well, and rainwater settled in the mud settling well is discharged to the multi-stage purification tank through a pipeline; rainwater purified by the multi-stage purification pond is connected to a water collection irrigation system through a water outlet pipeline, so that the rainwater is lifted for greening irrigation or road flushing. Rainwater is transferred to the overflow well for pretreatment through the grass planting ditch and the sunken green land, sundries and silt in the rainwater are effectively intercepted, the influence of suspended solids and the like on the multi-stage purification pond is reduced, meanwhile, pipe network blockage is reduced, and garbage sundries, silt and the like only need to be cleaned regularly.

The invention relates to the technical field of rainwater treatment and sewage treatment, and discloses an initial rainwater sewage intercepting device based on a Tai Chi flow technology, the initial rainwater sewage intercepting device comprises a barrel, a water inlet pipe and a water outlet pipe which are in mirror symmetry are fixedly arranged on two sides of the top of the outer wall of the barrel respectively, and fan-shaped cavities are fixedly arranged on two sides of the top of the inner wall of the barrel respectively; inner cavities of the two fan-shaped cavities communicate with the water inlet pipe and the water outlet pipe correspondingly, and two through openings in the opposite directions are formed in one sides of the bottom ends of the two fan-shaped cavities in the circumferential direction correspondingly. According to the Tai Chi flow technology applied in the device, the fan-shaped cavities and the arc-shaped cavities connected with the fan-shaped cavities are formed in the top of the inner wall of the barrel, rainwater is ingeniously guided to flow according to a specific and relatively stable path, the bad conditions such as water flow opposite flushing are avoided, the filtering efficiency is not affected, and compared with a logistics intercepting structure, the device can bear more dirt.

The utility model provides a mine water pretreatment device, which comprises a multi-medium filter, a first security filter, an ultrafiltration device and a second security filter, the multi-medium filter is sequentially communicated with the first security filter, the ultrafiltration device and the second security filter and is used for pretreating mine water. According to the pretreatment device, the mine water is treated through the multi-medium filter and the ultrafiltration device, some impurities in the mine water are effectively removed before entering the reverse osmosis membrane group, the water quality of the mine water is purified, the treatment burden of the reverse osmosis membrane group is relieved, and the service life of the reverse osmosis membrane group is prolonged.