Rriver and lake bottom mud plate-frame filter pressing dehydration method

• Main Authors: TAN XIANGJUN, HUANG JIAYIN, HU BAO'AN, WANG ZHANJUN, XIAO BO, ZHANG HAITAO, DONG XIANFENG, GUO CUISHUANG, YANG WANGWANG
• Format: Patent
• Language: Chinese; English
• Published: 17.04.2020
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a river and lake bottom mud plate-frame filter pressing dehydration method which comprises the following steps: deslagging river and lake bottom mud, feeding the mud into a mudconveying pipeline, mixing the mud with a flocculating agent, feeding an obtained mixture into a concentration tank for mud-water separation, and conveying an obtained supernatant to a residual watertreatment system after the turbidity of the supernatant meets the requirement; after reaching a certain concentration, introducing left slurry into a stirring tank, adding a filter aid, and carryingout full stirring; after full reaction, conveying the slurry into a plate-and-frame filter press, introducing compressed air to clean a filter pressing tank after filter pressing dehydration is completed, then obtained mud cakes are removed, and tail water is conveyed back to the concentration tank. The filter aid provided by the invention is an environment-friendly filter aid bottom mud conditioner, can effectively acceler