At present, the upgrading and transformation project of municipal sewage treatment plant is close to the end. MBBR denitrification and phosphorus removal process is adopted for the new sewage biological treatment section, and the "high density sedimentation tank + filtration" process is adopted for the deep treatment, chlorine dioxide disinfection process is used for the effluent, and the mechanical concentration and dehydration process is adopted for the sludge removal machine after the modification, which greatly improves the sewage treatment capacity.
        The sewage treatment plant capacity upgrading project will build a new primary sedimentation tank, biological reaction tank, deep treatment workshop and dosing room, and transform the coarse and fine grid room, lifting pump room, swirl sand settling tank and blower room. After the completion of the project, the sewage discharge standard is increased from class I B of GB18918-2002 to class A in the urban sewage treatment plant pollutant discharge standard, and the design treatment capacity is increased from 24000 cubic meters / day to 34000 m3 / day.
        Meanwhile, in order to save water, realize the resource of sewage and wastewater, actively transform the recycling system of reclaimed water, and use the treated water for urban greening water, and the reuse rate of water reaches 40% - 80%.