A vertical storage tank for efficient dispersion and quantitative feeding of sludge

Abstract

The invention provides a vertical storage tank for efficient sludge scattering and ration feeding. The vertical storage tank comprises a tank body, a stirring device and a ration device. The upper portion of the vertical storage tank is designed to be round, the lower portion of the vertical storage tank is designed to be conical, and therefore non-deposition transportation of sludge can be achieved while the storage volume of the storage tank is guaranteed. A top cover is arranged on the top of the tank body, and therefore foul smell spreading during sludge processing can be effectively avoided, and clean and sanitary transportation is achieved. A combined type stirring device of a strong shear force stirrer and a cone base spiral belt type stirrer is arranged inside the storage tank, and therefore the sludge can be effectively scattered and smashed after entering the tank body through a feed port; the cone base spiral belt type stirrer is attached to the wall of the lower conical storage tank part, and therefore the sludge cannot adhere to the wall of the storage tank. A spiral part attached to the wall is installed in a discharge port of the storage tank, and therefore the high-viscosity sludge cannot block the discharge port. A closed type screw feeder is arranged at the bottom of the storage tank, and therefore ration feeding and clean transporting of the sludge can be achieved.

Description

Technical field [0001] The invention relates to the field of storage and transportation of urban sludge, in particular to a storage tank capable of efficiently dispersing and quantitatively feeding sludge. Background technique [0002] With the acceleration of urbanization in my country, sewage sludge has increased sharply. Since the cost of treating the same amount of sludge is much higher than the cost of the same amount of sewage, the problem of sludge treatment has not been paid enough attention. At present, the increasing amount of sludge production in China is in sharp contradiction with the serious shortage of treatment capacity and the serious backward treatment methods. A large amount of wet sludge is transported at will, simply landfilled or piled up, resulting in many cities "sludge besieged". [0003] Traditional sludge disposal methods mainly include landfill, composting, dehydration, and incineration. At present, the main domestic sludge disposal method is landfill ...

AI Technical Summary

Problems solved by technology

Since the cost of treating the same amount of sludge is much higher than the cost of the same amount of sewage, the problem of sludge treatment has not received enough attention

However, landfill has the hazards of wasting land resources, polluting groundwater, clogging the landfill leachate collection system, and further increasing the heavy metal content in leachate. It does not fundamentally solve the problem, so sludge landfill technology cannot be used as a A clean and resource-based disposal technology will be developed in the future

Sludge has a high moisture content (80%), high organic content, and high heavy metal content, so the sludge contains a large number of germs, parasites, and harmful substances. When exposed to the air for a long time, the sludge is often accompanied by stench, which affects residents. Life and social stability, improper treatment will also cause serious secondary pollution

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