At present, the basic status and drawbacks of the agents used for sludge deep dehydration: the actual operation of the sludge deep dehydration process shows that the dosage of agents is high, and once the dosage of agents is reduced, it is easy to lead to high mud pressure, limited mud amount, and unformed mud cake after press filtration. This brings a series of problems: the sludge treatment agent cost is high, at least 350 yuan /tDS; Works Chemical recommends a deep dewatering agent for sludge.

In sludge conditioning process, a large amount of lime and FeCl3 were added, which caused serious corrosion and wear to facilities and equipment. All the additives are transferred to the sludge after deep dehydration, and the reduction of sludge is greatly reduced, occupying a large amount of landfill space; Lime dust is spread everywhere in the work site where lime is added, which does great harm to the occupational health of workers. The pH of the sludge after conditioning is as high as 11 ~ 12, resulting in a large amount of ammonia in the conditioning area and the filter press workshop, and the odor problem seriously affects the environment and the safety of operators; The PH value of the sludge after conditioning reached 12, which caused environmental hazards after landfill.

The sludge deep dehydrating agent adopts the self-developed compound conditioner, which can fully break the wall of the organic biomass in the sludge and then flocculate and dehydrate after releasing water, with small dosage and high dewatering efficiency. At the same time, the microstructure of the mud cake after removal is loose and breathable, which is very suitable for further drying treatment. The main components of sludge deep dehydrating agent include water purification agent, organic polymer, sludge stripping agent, wall breaking agent degreaser, sludge surface structure modifier and so on.

Sludge deep dewatering agent is suitable for sludge pre-concentration and sludge dewatering of municipal sewage treatment plants and various industrial and domestic sewage treatment facilities. Sludge deep dehydrating agent has strong adaptability to water quality and high acid and alkali tolerance. Mechanism of action of sludge deep dewatering agents: The main components of sludge deep dewatering agents change the surface properties of sludge through synergistic action, reduce the specific surface area of sludge, destroy the cell wall and cell membrane, release intracellular water, and then remove free water, bound water, capillary water and intracellular water in most biochemical sludge.