3results about "Fixation/solidifcation sludge treatment" patented technology

Disclosed in the present invention is a channel dredging mud solidification device, comprising a mud tank; an inorganic flocculation sedimentation tank; an organic flocculation sedimentation tank; a filtering device; a support driven to ascend and descend; a circular tank driven to rotate and horizontally arranged, an introducing pipe coaxially and rotatably leading to one end of the circular tank, the end of the introducing pipe away from the circular tank being connected to a hose, and the hose leading to the inorganic flocculation sedimentation tank; a plurality of connecting pipes, which are arranged on the outer wall of the circular tank at intervals in the circumferential direction of the circular tank, each connecting pipe leading to the inside of the circular tank; and a plurality of tank bodies, which correspond to the plurality of connecting pipes on a one-to-one basis, the outer walls and the bottom walls of the tank bodies each being provided with a plurality of filter holes. The present invention has the beneficial effects of reducing the time for replacing the tank bodies as much as possible so as to improve the working efficiency of the mud solidification device as much as possible while ensuring the filtering effect of the tank bodies, and achieving strong practicability.

An optimization method based on integration of flocculation, vacuum, and solidified sludge includes: arranging a sludge treatment device, where the sludge treatment device includes a flocculation conditioning component, an oxidation conditioning component, a solidification conditioning component, a retardation conditioning component, an upper vacuum component, a lower vacuum component, a standing component, and a standing vacuum component, and the upper vacuum component, the lower vacuum component, or the standing vacuum component is evacuated through a vacuum pressure module; dividing the sludge into high organic matter sludge, small batch of low organic matter sludge, and large batch of low organic matter sludge for treatment according to a sludge quality and organic matter content of sludge; and selecting the appropriate component top-down grading splicing according to the processing object. In each sludge treatment process, work is completed in one component before proceeding to the next component until the treatment is completed.

This invention discloses an integrated dewatering and solidification agent for dredged sludge based on fly ash, its preparation method, and its application. The agent is characterized by using modified fly ash as a base, tetraethyl orthosilicate and rhodamine B as grafting agents, starch-acrylonitrile graft copolymer as a dewatering agent, and cerium ammonium sulfate as an initiator. It is prepared using a combined surface modification-low-temperature calcination coating-reactive grafting method. This agent is environmentally friendly, low-cost, and can absorb and solidify water, heavy metal ions, and odorous gases in dredged sludge at room temperature, playing a crucial role in the reduction and disposal of dredged sludge, thus possessing significant economic and social benefits.