What equipment is used to treat linen washing sewage
First of all, pre-treatment equipment is essential. The pretreatment stage mainly includes a grid, a conditioning tank and a grit tank. Screens are used to intercept large solids and floating debris in sewage and prevent them from entering subsequent treatment equipment, causing blockages or damage. The regulating tank is used to regulate the quantity and quality of the effluent, so that it is stable and meets the requirements of subsequent treatment. The grit remover is mainly used to remove inorganic particles in sewage, such as sand and soil, to ensure the normal operation of subsequent treatment equipment.
Secondly, biochemical treatment equipment is the core of linen washing sewage treatment. The biochemical treatment stage mainly converts the organic pollutants in the sewage into harmless substances through the action of microorganisms. Commonly used biochemical treatment equipment includes activated sludge method, biofilm method and anaerobic digestion method. The activated sludge method degrades organic matter through microorganisms in sludge, which has the characteristics of good treatment effect and strong adaptability. The biofilm law uses microorganisms on the biofilm to degrade organic matter by attaching and growing microorganisms to the carrier, forming a biofilm. The anaerobic digestion method is suitable for the treatment of high-concentration organic sewage, and the organic matter is decomposed into methane and other gases through the action of anaerobic microorganisms, so as to realize the resource utilization of organic matter.
In addition, advanced treatment equipment is also an indispensable part of linen washing wastewater treatment. The advanced treatment stage is mainly to further remove residual pollutants such as phosphorus and nitrogen from the biochemically treated wastewater. Commonly used advanced treatment equipment includes filtration, adsorption, and disinfection. Filtration equipment such as sand filters, activated carbon filters, etc., remove suspended solids and dissolved organic compounds in sewage through physical interception or adsorption. Adsorption equipment, such as activated carbon adsorption devices, use the adsorption properties of activated carbon to remove specific pollutants in sewage. Disinfection equipment such as chlorine disinfection, ultraviolet disinfection, etc., ensures the hygiene and safety of the effluent by killing bacteria and viruses in the sewage.
Finally, sludge treatment equipment is also a non-negligible part of linen washing sewage treatment. In the sewage treatment process, a large amount of sludge is generated, which needs to be properly treated to prevent secondary pollution. Sludge treatment equipment mainly includes sludge thickening tank, sludge dewatering machine and sludge incinerator. The sludge thickening tank is used to preliminarily remove the water in the sludge and reduce the volume of the sludge. The sludge dewatering machine further removes the water in the sludge through mechanical force or chemical methods, so that the sludge can achieve the purpose of volume reduction and stabilization. The sludge incinerator is used to incinerate the dehydrated sludge at high temperature, completely oxidize the organic matter into harmless substances, and realize the resource utilization of sludge.
To sum up, the treatment of linen washing sewage requires a variety of equipment, including pretreatment equipment, biochemical treatment equipment, advanced treatment equipment and sludge treatment equipment. Each of these devices has different functions and together forms a complete process for the treatment of linen washing sewage. When selecting these equipment, it is necessary to comprehensively consider the characteristics of the wastewater, treatment requirements, investment costs, operation management and other factors according to the actual situation to ensure that the most suitable equipment combination is selected to achieve the best treatment effect.