Sludge plate frame dewatering and drying composite device capable of automatic sludge falling and automatic cleaning of filter cloth and dewatering and drying method

Abstract

The invention relates to the technical field of sludge dewatering and drying, in particular to a sludge plate and frame dewatering and drying composite device capable of automatic sludge falling and automatic cleaning of filter cloth and a dewatering and drying method. The device comprises a plurality of filter pressing units which are sequentially arranged in parallel, and each filter pressing unit comprises a first filter plate and a second filter plate which are alternately arranged; heating plates are arranged on the two sides of the first filter platex, elastic membranes are arranged on the two sides of the second filter platex, a filter cloth driving device is arranged at the top ends of the filter plates, a transmission chain is arranged on the filter cloth driving device, filter cloth traction rods are arranged at the two ends of the transmission chain, and when the transmission chain is driven by the filter cloth driving device, the filter cloth can be driven to move up and down through the filter cloth traction rod. According to the device and the technique, the water content of sludge can be directly dewatered and dried to be about 30% from about 90%-99%, and meanwhile the device and technology have the advantages that sludge cake automatic sludge falling (without manual assistance) and synchronous cleaning of the filter cloth are achieved.

Description

technical field [0001] The invention relates to the technical field of sludge dehydration and drying, in particular to a sludge plate and frame dehydration and drying composite device and a dehydration and drying method for automatic mud fall and automatic cleaning of filter cloth. Background technique [0002] With the progress of society, environmental protection is deeply rooted in the hearts of the people. The amount of sewage treatment is increasing, and the amount of sludge generated in the process of sewage treatment is also increasing. At present, the amount of sludge generated by sewage treatment every year will reach more than 50 million tons. Sludge besieged the city, and sludge became a hazard. If the sludge is not properly treated, it is easy to form secondary pollution. However, the operating cost of the existing sludge treatment and disposal is too high, and the social and economic pressure on sludge treatment is also very huge. This is a thorny contradicti...

AI Technical Summary

Problems solved by technology

However, the traditional reduction technology is often a solution of dehydration + drying, which is generally composed of dehydration equipment and drying equipment. The system composition is relatively complicated, and the land occupation and investment are also large.

[0004] In the existing technology, although there is also a device that integrates dehydration and drying equipment, due to the adhesiveness of the filter cake, after dehydration and drying, the filter cake needs to be removed, and the filter cloth must also be cleaned to ensure Permeability, while the integrated dehydration and drying device is relatively compact in design, and the workload of manual filter cake removal and filter cloth cleaning is relatively large

Images