Sewage Treatment Equipment in Living Area
I. Overview of Sewage Treatment Equipment in Residential Areas
There is no uniform limit on the treatment capacity of the sewage system in the community. The former Soviet Union once suggested that the processing capacity of a single structure should not exceed 1400m3d, while the United States limited the processing capacity of small plants to 3785 m3d. According to the situation in our country, it is suggested to define a treatment plant equal to or less than 4000 m3d as a residential sewage treatment plant. Residential sewage is different from urban sewage (often including some industrial wastewater) and belongs to the category of domestic sewage. The characteristics of water quality and quantity can be summarized as follows: water quality and quantity change greatly, pollutant concentration is low, i.e. lower than that of urban sewage, sewage has good biodegradability and is less difficult to treat.
II, the design principle of sewage treatment equipment in the community Generally speaking, different communities have different requirements for effluent. The treatment degree should be determined according to the relevant provisions of China's "Ground Environmental Quality Standard" (GB 3838-88) and "Comprehensive Wastewater Discharge Standard" (GB 8978-96) and the requirements of local environmental protection departments to ensure the quality of effluent. If the effluent is treated by land treatment method, it shall be calculated according to the requirements of land treatment method. The design and construction of sewage treatment facilities must be combined with the overall planning and architectural features of the residential area, i.e. the exterior design must be coordinated with the residential area's architectural environment in order to be beautiful. The sewage treatment process is simple and practical to facilitate management. Henan gubo industry co., ltd. In elevation layout, three-dimensional layout should be adopted as far as possible to make full use of underground space. The layout should be compact to save land. The sewage treatment plant shall be located as far as possible in the downwind direction of the residential area, at a certain distance from other buildings, so as to reduce the impact on the environment; The sewage treatment equipment in the residential area is equipped, standardized, modularized, convenient to construct and install, easy to operate, stable in equipment performance, and suitable for phased construction. The treatment degree is high, the sludge yield is low, and energy-saving treatment technology is adopted as much as possible; The treatment structure has a wide range of adaptability to hydraulic load and organic load, which enables the system to better withstand impact load. The population in the community is gradually increasing. Therefore, the sewage treatment plant in the community should be based on the predictable development plan as the basis for flow design. According to the situation in our country, a design cycle of 20 years can be considered.
III. Process of Sewage Treatment Equipment in Residential Quarter According to the principle of wastewater treatment in residential areas, a treatment method with stable treatment effect, less sludge production and energy saving should be selected. Septic tanks are generally built in all kinds of buildings in the community system, so septic tanks should be combined with sewage treatment methods. Several common treatment processes: Sludge reflux Add medicine Reuse process flow: biological treated effluent is then coagulated, filtered and sterilized. At the beginning of the process, it is generally considered to set up a homogenization tank, because the change in water quality and quantity in the residential area is larger than that in the urban sewage treatment plant. The homogenization tank is generally located behind the grille. Physico-chemical and biochemical treatment are the core parts of pollutant removal. In addition, our company not only produces sewage treatment equipment in residential quarters, but also produces sewage treatment equipment in laundry factories, air flotation machines, sludge filter presses, papermaking equipment and other environmental protection equipment.