Wet type raw material feeding device and method for feeding multiple raw materials

Abstract

The invention relates a wet type raw material feeding device and a method for feeding multiple raw materials. The wet type raw material feeding device comprises a tank body (1), a pore plate (2), baffles (3), a water pump (4) and a corresponding mated pipeline. The wet type raw material feeding device is characterized in that the pore plate (2) is rectangular, through holes are uniformly distributed, the two sides of the pore plate (2) are vertically welded on the inner wall of the tank body (1); the cylindrical tank body (1) is divided into a large part and a small part, wherein the large part is a mixing area and the small part is a discharge area; the inner wall of the mixing area of the tank body (1) is vertically provided with the three baffles (3), the bottom of the mixing area of the tank body (1) is connected with a pipe C, a pipe A is connected in the middle of the mixing area of the tank body (1) in the tangential direction, a pipe B is connected to the bottom of the discharge area of the tank body (1), the pipe B is connected with an inlet pipe of the water pipe (4), and the pipe A and the pipe C are connected with an outlet pipe of the water tank (4). The invention provides the device for comprehensively feeding various raw materials including powdered activated carbon, flour, glucose, nitrogenous fertilizer, monopotassium phosphate, trisodium phosphate, nitrobacterium culture promoter and strains, thereby greatly improving the operation environment and reducing labor intensity.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a device for adding powdered activated carbon, nutrient salts and microbial strains. Background technique [0002] At present, for the advanced treatment of industrial wastewater, the method of adding powdered activated carbon to adsorb odor, color and organic pollutants in water can be used. The country pays more and more attention to environmental protection, and the environmental discharge standards are continuously improved. Powdered activated carbon is also widely used in sewage and wastewater treatment. Powdered activated carbon wet-type dosing equipment generally has several mixing cylinders, and the mixing cylinder is generally equipped with a stirring device. After the powdered activated carbon and water are evenly mixed in the mixing cylinder, the powdered activated carbon is prepared into a slurry with a concentration of about 8%, and then ...

AI Technical Summary

Problems solved by technology

Since the fineness of the selected powdered activated carbon is 150-200 mesh, a large amount of dust will be generated when the powdered activated carbon is added to the silo. It is precisely because of the opening on the top of the silo that the dust will run out of the silo, which will not only cause damage to the surrounding environment. Severe dust pollution also causes waste of powdered activated carbon

Therefore, some operators installed a bag filter at the breathing port to reduce dust pollution, but the effect was not good and it also increased the complexity of the equipment, input costs and operating costs.

There are two disadvantages of wet dosing of powdered activated carbon: (1) The pollution problem of flying dust

Powdered activated carbon is packed in bags. When it is unpacked and fed into the carbon slurry tank, the air will carry black powdered activated carbon and fly up, which will diffuse the dust in the dosing room, resulting in a bad working environment. It is easy for operators to work in this environment for a long time. Occupational disease

Dust pollution is a key problem restricting its application for a long time

(2) Carbon powder clogging problem

The residence time in the anaerobic system is 40 hours, such as BOD 5 / COD5 / COD>0.1; the anaerobic circulating pump is turned on for four hours a week, excessively turning on the anaerobic circulating pump will lead to a large amount of wastewater circulation and crush the anaerobic granular sludge, resulting in high effluent COD

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