A kind of sludge conditioning agent and sludge drying treatment method

Abstract

The invention discloses a sludge conditioner and a sludge drying treatment method. The sludge conditioner includes component A, component B and component C; the mass ratio of component A, component B and component C is 1:0.2~0.5:0.15~0.2; wherein, the The component A is polyferric chloride or polyaluminum chloride, the component B is polyacrylamide, and the component C is cement. The sludge drying treatment method comprises the following steps: S1, diluting the original sludge to form a sludge solution with uniform quality; S2, fully reacting the sludge solution with a sludge conditioner for 0.5-1.0 h; S3, mixing the sludge The solution is precipitated; S4, the sludge is pressed and dehydrated to form a mud cake to discharge the mud. The invention can reduce the water content of the discharged sludge, thereby reducing the volume of the sludge, relieve the pressure of the landfill, and be friendly to the environment.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to a sludge conditioner and a sludge drying treatment method. Background technique [0002] With the rapid development of social economy, the amount of sewage treated by sewage treatment plants is increasing day by day, and the amount of sludge generated by sewage treatment is also increasing. The sludge produced by the sewage plant has a complex composition, containing a variety of microorganisms, organic matter and inorganic matter, mainly including refractory organic matter, heavy metals, salts and pathogens. Most of the sludge produced by industrial wastewater contains a large amount of heavy metals. [0003] If the sludge is discharged directly without treatment, it will cause great harm to the environment. Because the sludge that has not been stabilized has a high content of organic matter, is perishable, breeds a large number of germs, parasites, etc., and is easy ...

AI Technical Summary

Problems solved by technology

② Difficulty in landfill operations

The water content of dewatered sludge is generally about 80%. The high water content and high viscosity of sludge bring difficulties to landfill operations, and landfill processes such as bulldozing, compaction, and covering are difficult to carry out

③It has caused great pollution to the environment

During the sludge landfill process, mechanical equipment cannot perform compaction and covering work on the sludge surface, so the sludge is basically piled up in the landfill in the open air, and the stench emitted pollutes the atmosphere

Because the sludge cannot be compacted, its surface is very loose, and the fly exterminators cannot disinfect the surface, the sludge has become a good environment for flies to breed, resulting in a large number of flies in the landfill

④ Serious blockage of leachate collection system

The high water content of the sludge greatly increases the leachate treatment capacity of the landfill. Due to the small size of the sludge, the leachate collection system and drainage pipes are often blocked, which increases the load of the garbage dam and brings difficulties to the safety and management of the landfill. , this phenomenon is exacerbated by the rainy season

Cleaning collection systems is extremely expensive

⑤ bring security risks

The rheology of sludge makes the landfill easy to deform and landslide, becoming an artificial "swamp", which brings great safety hazards to the landfill. Sludge treatment has become a major problem in environmental governance.

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