Energy-saving type chemical adding and stirring device for sludge and sludge treatment system

Abstract

The invention provides an energy-saving type chemical adding and stirring device for sludge and a sludge treatment system. In the energy-saving type chemical adding device, sludge enters a stirring tank from sludge inlets to drive blades and a stirring rod to rotate, the stirring rod drives a stirring paddle to perform stirring, and besides, a gear drives a rotating shaft of a rotating switch in achemical adding tank to rotate. According to the chemical adding and stirring device, the stirring and chemical adding device is driven to rotate through energy produced during sludge conveying, electric energy is saved, and synchronous chemical adding is facilitated. The sludge treatment system sequentially performs sieving, impurity removal, water removal, concentration, chemical adding and stirring, aeration for removal of organic matter and dewatering and filter pressing for blocking on the sludge. Heating is not required in the treatment process, the filtration speed and the process of aeration for removal of organic matter are increased through an air compressor, the treatment method is simple, equipment input is low, energy is saved, the content of sludge impurities, organic matterand water after treatment can be greatly reduced, and the device and the system can be used for building materials.

Description

Technical field [0001] The invention belongs to the technical field of sludge treatment, and specifically relates to an energy-saving sludge dosing and stirring device and a sludge treatment system. Background technique [0002] A large amount of sludge will be generated during the dredging of rivers and lakes and the construction of civil engineering. Conventional mud treatment usually adopts methods such as storage yard drying and mud treatment station. However, because the cleared sludge contains more particles and impurities, the mud particles are fine and bulk density Light weight, high organic content, high moisture content, etc., relying on technologies such as natural drying at the storage yard and manual intervention drying, it often takes a long time to solidify and dry, which takes a long time and is inefficient. Other commonly used sludge treatment methods include vacuum removal of water, heat treatment, extraction and precipitation, air-drying, or curing with a curin...

AI Technical Summary

Problems solved by technology

In this patent, the transfer pump is used to transport the sludge for feeding. The sludge transport process consumes a lot of electric energy and converts it into the kinetic energy and potential energy of the mud, and the use of motors in the stirring and dosing process also consumes a lot of electric energy, but The kinetic energy and potential energy of the sludge entering the mixer have not been effectively utilized, resulting in greater energy consumption, and the mud flow will also have a greater impact on the bottom of the mixer

Moreover, the sludge treatment method of this treatment system is relatively complicated, and steam heating is required, which consumes more energy and reduces safety

[0005] The sludge treatment devices in the above-mentioned published patent technologies cannot make full use of the kinetic energy and potential energy generated in the process of sludge transportation, and both stirring and dosing need to be driven by a separate motor, the equipment cost is high, and its energy consumption is high, which is not in line with energy-saving production. requirements

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