Sewage and sludge co-treatment system and method in low-temperature environment

• Main Authors: GAO LIJUAN, LI WENTAO, HAN XIAOFENG, WEI JUNYAO, GAO XUJUN, CHAI BAOHUA
• Format: Patent
• Language: Chinese; English
• Published: 10.05.2022
• Subjects: CHEMISTRY; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DISPOSAL OF SOLID WASTE; ELECTRICITY; GENERATION; METALLURGY; PERFORMING OPERATIONS; RECLAMATION OF CONTAMINED SOIL SOIL; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a sewage and sludge cooperative treatment system and method in a low-temperature environment. Comprising a preheating sand removal system for preheating and preliminarily filtering sewage, a new energy biochemical subsystem for removing nitrogen and phosphorus from the sewage, a biochemical sedimentation tank subsystem for filtering the sewage again, a sewage source heat pump subsystem with a heat exchange effect, and a sludge treatment subsystem for cooperatively treating sludge and kitchen waste, through the five steps of sewage preheating and desanding, biochemical reaction, mud-water separation, sewage heat exchange and cooperative treatment of sludge and kitchen waste, the problems that the effluent quality of a sewage plant is difficult to reach the standard under the low-temperature condition, the treatment cost is high in sludge remote treatment, and infrastructure is repeatedly constructed are solved. 本发明公开了一种低温环境下的污水污泥协同处理系统及方法，包括用于对污水进行预热和初步过滤的预加热除砂子系统、用于对污水脱氮除磷的新能源生化子系统、再次对