Belt type dehydrator and working method

Abstract

The invention relates to the technical field of environmental protection equipment, and particularly discloses a belt type dehydrator and a working method. The dehydrator comprises a dehydrator frame; filter belts, a sludge inlet, a gravity dehydration device, a motor speed reducer, a sludge belt separation device, a sludge outlet and a water outlet are arranged on the dehydrator frame; the filter belts include a filter belt I and a filter belt II which are connected with the sludge inlet, the sludge sequentially passes through a wedge-shaped dewatering structure, an S-shaped dewatering device and a movable opposite-pressing device under the wrapping of the two filter belts; the dewatered sludge is discharged out of the dewaterer from the sludge belt separation device through the sludge outlet; the water outlet is formed in the bottom of the dehydrator frame; and sewage generated by the dehydrator is discharged out of the dehydrator through the water outlet. The sewage discharged from the dehydrator enters a sewage pool for unified treatment; and the sludge treated by the dehydrator is low in water content and remarkable in reduction, the treatment method is flexible, and the treated sludge can be used for making garden cultivation soil, biochar, bricks and the like.

Description

technical field [0001] The invention relates to the technical field of environmental protection equipment, and in particular discloses a belt dehydrator and a working method. Background technique [0002] With the rapid development of China's social economy, environmental pollution has become an obstacle to the further development of the social economy. Air pollution, water pollution, and solid waste pollution have affected people's lifestyles and quality of life in many areas, environmental protection and environmental governance It has become the consensus and important task of governments at all levels and the general public. The disposal of sewage and sludge has become a major theme of environmental protection. [0003] The overall requirement for sludge disposal is to "reduce volume and turn resources into resources", and "high-efficiency dehydration" is an effective way to achieve this goal. Although the ordinary belt filter press has low energy consumption, the mois...

AI Technical Summary

Problems solved by technology

Although the ordinary belt filter press has low energy consumption, the moisture content of the dehydrated sludge can only reach about 80%; the dehydrated sludge moisture content of the plate and frame filter press can reach 50%-60%, but usually Consolidating agents such as lime need to be added, and it is an intermittent work mode, which affects productivity and high energy consumption of equipment

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