Sludge dehydrant is a chemical agent used for sludge treatment, which can change the surface structure and properties of the sludge, reduce the surface load and specific surface area of the sludge solid, destroy the bacterial structure, and thus improve the dehydrability of the sludge. The main components of this chemical agent work together to reduce the specific surface area of the 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.
The moisture content of sludge can be significantly reduced after the sludge dehydrating agent conditioning treatment. For example, for sludge with a moisture content of more than 90%, the water content can be reduced to 40%-60% after treatment, achieving deep dehydration of the sludge. This deep dehydrated sludge forms a dry hard mud cake, the water content is very low, harmful substances with the water flow out, the mud cake is non-stick, the surface is dry, no longer smelly, can stabilize the sludge.
In addition, mud cakes with low water content are easier to use as resources. According to the relevant regulations of the state, the moisture content of the sludge must be below 60% to landfill; Only when the sludge forms a hard lump can it be mixed with other substances and sent to the decomposing furnace for combustion. The sludge moisture content in this state should be about 50%. The sludge cake conditioned by sludge dehydrating agent is directly in line with the sludge resource treatment standard after being pressed by filter press.
In general, sludge dehydrants play an important role in the sludge treatment process, which can help us treat sludge more efficiently, economically and environmentally friendly, and ensure the safety of human health and the environment.