Column type sludge drying equipment combining suction and pressing and application method

Abstract

The invention relates to the technical field of environmental protection, in particular to column type sludge drying equipment combining suction and pressing and an application method. The column typesludge drying equipment comprises an inner steel cylinder and an outer steel cylinder which are of a cylindrical structure, wherein the outer steel cylinder is fixed on the outer layer of the inner steel cylinder; the inner wall of the outer steel cylinder and the outer wall of the inner steel cylinder are arranged at an internal; a feed horn opening is formed in the upper part of the outer steelcylinder; a large number of water through holes are formed in the wall of the inner steel cylinder; a filter device is arranged on the outer wall of the inner steel cylinder in a wrapped manner; an extruding device is arranged between the filter device and the inner wall of the outer steel cylinder. With the adoption of the equipment and the application method, water in sludge is rapidly drainedunder the double actions of internal suction and external pressing, and the sludge is rapidly dried; the technology for drying the sludge requires no additives, produces zero pollution to the environment and has relatively broad application prospect.

Description

technical field [0001] The invention relates to the technical fields of municipal administration and environmental protection, in particular to a column-type sludge drying equipment combined with suction and pressure and its use method, in particular to a polluted river bottom sludge drying project. Background technique [0002] With the rapid development of my country's social economy, the urban population has increased sharply, the amount of sewage discharged to urban rivers and lakes is increasing day by day, water pollution is becoming more and more serious, and the quality of water environment is deteriorating day by day. Disposal is urgent and directly related to the living environment of residents. At present, the amount of sludge produced in the process of lake and river dredging projects in my country has reached an astonishing level. The development of mud-water separation technology and equipment is imminent, and its development will directly affect the modernizati...

AI Technical Summary

Problems solved by technology

The development of mud-water separation technology and equipment is imminent, and its development will directly affect the modernization process of lake and river dredging projects and the development process of cities, especially the silting and pollution of rivers and lakes in large and medium-sized cities have affected my country's international image. If it is solved, obvious environmental and social benefits will be obtained. How to carry out environmental protection dredging and how to deal with the cleared sludge are issues that are being discussed by the international community today. If a certain link is not handled properly, the dredging project will bring serious large-scale secondary pollution, the consequences are disastrous

[0003] The follow-up treatment of sludge after dredging is a key issue, because dredging sludge not only produces a large amount, but also has poor mechanical properties, high water content, and is in a fluid state. If it is not treated in time, it will not only affect the dredging process, but also cause secondary pollution. Practice has shown that even if the directly cleared silt is piled up for three years, the surface seems to be dry, but it still contains a lot of water inside and has no bearing capacity. The secondary pollution caused by the seepage of silt transportation and rainwater washing is very serious. According to statistics, the discarded dredged silt in my country alone amounts to more than 100 million cubic meters per year. The discarded dredged silt is often placed in the low-lying areas of the landfill area, occupying some fish ponds and cultivated fields, resulting in high costs. my country's South-to-North Water Transfer Project The cost of land acquisition for the first phase of the line accounted for about 60% of the total cost of the project. It can be seen that the most important thing for the dredged sludge is to dry it.

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