Sewage treatment:According to different levels, sewage sludge sewage treatment can be divided into secondary and tertiary treatment,. Primary treatment basically is in a suspension of solid waste, mainly by the interception and settlement, oil physical method. Second is the main task for the treatment of wastewater is greatly removed the colloid and dissolved organic pollutants, use the method of activated sludge, the biological treatment membrane. 3 processing and depth, its purpose is to remove the suspended, inorganic wastewater and other pollutants, the commonly used method is mainly physical and chemical methods, such as the technology adsorption, ion exchange and coagulation precipitate, oxidation, etc.Urban sewage by grid, a leaking (tank), remove the suspended and gravel, large and aeration biological treatment into second leaking (second pond) spate separation, separated from the sludge sedimentation of back into aeration, another part of the concentration, the digestion and dehydration after the comprehensive utilization of shipped, 2 the leaking water via chlorination pool after disinfection in-depth processing or discharge.Water treatment:The basic principle of water -- > add alum, settling -- > > -- -- - and chlorineFirst choose suitable water pipes and pipe, use water pump and pump (1) and before the pump to kill alga, chlorination plants and shellfish. Through the level of water pump to plant processing system. After mixing (usually in source water addition of suitable amount of aluminium, commonly known as "), precipitation, filtration, disinfection process, each process with the corresponding structures (such as filters, QingShuiChi leaking, etc), after disinfection is generally chlorination and ammonia, putting the disinfectant QingShuiChi, and by the water in the pool for an hour or so, the water qualified secondary pump water pump (by) pressure to urban network for drinking and production.