Method and device for separating and extracting sludge

Abstract

The invention provides a method and a device for separating and extracting sludge, belonging to the technical field of sludge separation and extraction of a wastewater treatment system. According to the method and the device, a suitable amount of flocculating agent is injected into a sludge pipe to concentrate and separate the sludge in the device; the self gravity and the potential energy of the sludge which is conveyed upwards in a sludge suction pipe of the device, and the friction force in the pipe are overcome so that a vacuum state can be formed rapidly in a lower end pipe of the sludge suction pipe, which is inserted into a compressed air pipe; the upward conveying flowing speed of the sludge is increased by injection of an air-liquid jet device so that the concentrated sludge is discharged rapidly from the sludge suction pipe from bottom to top; not only is the sludge speed increased and also the water content of the sucked sludge is low. The method and the device provided by the invention have the advantages of reasonable design, feasible implementation, simple device, convenience in operation, low investment and few energy consumption amount; the concentration quality of the sludge can be guaranteed effectively and the sludge is easy to separate; the sludge discharging efficiency can also be improved and the operation cost is reduced; the method and the device can be widely applied to a separation and sludge extraction system of the wastewater treatment sludge; one or more single devices can be combined in parallel to be constructed and used.

Description

technical field [0001] The invention relates to a method and a device for separating and extracting sludge, and belongs to the technical field of sludge separation and air lift in wastewater treatment systems. Background technique [0002] With the strengthening of environmental pollution control work, the separation, collection, promotion and disposal of sludge in wastewater treatment have been attached great importance to. In daily wastewater treatment, there are many methods for lifting sludge. Commonly used sludge suction machines such as sludge lifting pumps and screw sludge discharge machines are widely used in printing and dyeing, brewing, pharmaceutical, chemical and other industries. The treatment system has become the necessary equipment for sludge collection and lifting. It has certain characteristics and sludge lifting effect, but the main disadvantages are as follows: first, it consumes a lot of power; second, the efficiency of sludge suction is low; third, the ...

AI Technical Summary

Problems solved by technology

In daily wastewater treatment, there are many methods for lifting sludge. Commonly used sludge suction machines such as sludge lifting pumps and screw sludge discharge machines are widely used in printing and dyeing, brewing, pharmaceutical, chemical and other industries. The treatment system has become the necessary equipment for sludge collection and lifting. It has certain characteristics and sludge lifting effect, but the main disadvantages are as follows: first, it consumes a lot of power; second, the efficiency of sludge suction is low; third, the device High investment; Fourth, high operating costs

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