Sludge treatment method and device for urban drainage pipe network

• Main Authors: LIU SHUANG, MA JILI, CHI YONGZHOU, TANG QINGMING, ZHANG MIN, ZHANG PEIQIANG, ZHOU JIAN, CHEN YIREN
• Format: Patent
• Language: Chinese; English
• Published: 26.10.2011
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

A sludge treatment method for an urban drainage pipe network comprises the following steps of: 1) multi-stage screening; 2) conveying the separated slag into a garbage bucket by a conveying device; 3) conveying the separated sewage to a sewage-collecting pool; 4) arranging a first submersible sewage pump outlet on the sewage-collecting pool, wherein the pump is connected to a cyclone desander andis used to separate mud and sand with micro particle sizes, discharging the separated mud and sand through a sand-settling nozzle for the screening step, allowing the separated sewage to enter the underground drainage pipe network through an overflow pipe of the cyclone desander; 5) setting a reclaiming pool, pumping reclaimed water to a flushing distributor by a second submersible sewage pump, and conveying the reclaimed water to each screening device and each conveying device by the flushing distributor according to working conditions; slag with a water content of below 40%, and clear waterwhich is allowed to direct