A harmless treatment system and process for polyaluminum chloride water purifying agent waste residue

Abstract

A polyaluminum chloride water purifying agent waste residue harmless treatment system and process, belonging to the technical field of industrial waste residue treatment, including raw material bins, mixing tanks, dosing tanks, sedimentation tanks, plate and frame filter presses, circulating pools, drying machine, rotary kiln and temporary storage workshop, a hoist is provided between the raw material bin and the mixing pool, and the waste slag of the polyaluminum chloride water purifier in the raw material bin is sent into the mixing pool through the hoist, and a stirring tank is installed in the mixing pool Mechanism, the outlet of the dosing tank is connected to the inlet of the mixing tank through a pipeline, the outlet of the mixing tank is connected to the inlet of the sedimentation tank through a pipeline, the upper liquid in the sedimentation tank is sent to the circulating pool through the pipeline, and the lower sediment is sent to the plate frame through the belt Filter press, the filtrate produced by the plate and frame filter press is sent to the circulating pool through the pipeline, and the filter cake produced by the plate and frame filter press is sent to the dryer for preheating, and the preheated filter cake is sent to the rotary kiln for drying , the dried products are sent to the temporary storage workshop through the belt conveyor.

Description

technical field [0001] The invention belongs to the field of industrial waste slag treatment, in particular to a harmless treatment system and process for polyaluminum chloride water purifier waste slag. Background technique [0002] According to relevant statistics, in 2015, there were more than 300 water purifying agent companies nationwide, and the market demand for water purifying agents reached 4.176 million tons. With the gradual improvement of environmental protection requirements, the demand for water purifying agents is still growing in recent years . According to statistics, Gongyi City has more than 80 water purifier manufacturers, with a total annual output of more than 900,000 tons, and the production of water purifiers accounts for about 60% of the country's total production. The material is about 400,000 tons. After the construction of the landfill, it needs to occupy a certain amount of cultivated land or mountain land; at the same time, the construction of...

AI Technical Summary

Problems solved by technology

Polyaluminum chloride water purifying agent waste slag recycled materials processing has always been an important factor that plagues the development of the polyaluminum chloride water purifying agent industry. Given that the Gongyi area is a mountainous area, the waste slag generated before 2018 was mostly buried in ravines after simple treatment , bringing greater pollution risks to groundwater, soil and the atmosphere:

[0004] (2) Indirect pollution of waters

What is even worse is dumping solid waste directly into rivers and lakes, causing more serious pollution and causing a large number of aquatic organisms to poison and die

Images