Water treatment agent polyaluminum chloride waste residue comprehensive utilization method

A technology of polyaluminum chloride waste slag and water treatment agent, which is applied in the direction of aluminum chloride, aluminum halide, application, etc., can solve the problems of high energy consumption and incomplete treatment of water treatment agent polyaluminum chloride waste slag, etc., to reduce effect of influence

Active Publication Date: 2019-04-19
河南省福可思环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above method will have defects such as incomplete treatment of polyaluminum chloride waste residue of the water treatment agent, more energy consumption during the waste residue treatment process, or new waste generated during the treatment process.

Method used

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  • Water treatment agent polyaluminum chloride waste residue comprehensive utilization method
  • Water treatment agent polyaluminum chloride waste residue comprehensive utilization method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] This embodiment provides a comprehensive utilization method of water treatment agent polyaluminum chloride waste residue, specifically, the flow chart of the method is as follows figure 1 As shown, it specifically includes the following steps:

[0038] DeCl - Firstly, the water treatment agent polyaluminum chloride waste slag is firstly washed with water to remove Cl - Treatment and base elution of Cl - treatment, get off Cl - Treatment liquid and mixed mud, wherein, the lye mass percentage concentration used when controlling described alkali washing is 10%, and described lye is sodium hydroxide solution; - Treatment and base elution of Cl - During processing, the water treatment agent polyaluminum chloride waste residue mud on the hydropulper is completely scattered until it can be left to stand for stratification; the decompression device is a hydropulper;

[0039] Static stratification The mixed mud is subjected to static sedimentation and stratification treatme...

Embodiment 2

[0043] This embodiment provides a method for comprehensive utilization of water treatment agent polyaluminum chloride waste residue, the flow chart of the method is as follows figure 2 As shown, it specifically includes the following steps:

[0044] DeCl - Firstly, the water treatment agent polyaluminum chloride waste slag is roughly selected to obtain a water treatment agent polyaluminum chloride waste slag with a particle size greater than 15mm and a water treatment agent polyaluminum chloride waste slag with a particle size less than 15mm; using a differential speed pulverizer The water treatment agent polyaluminum chloride waste slag with a particle size greater than 15mm is crushed into a water treatment agent polyaluminum chloride waste slag with a particle size less than 15mm, and then the water treatment agent with a particle size of less than 15mm after rough selection and crushing is used The treatment agent polyaluminum chloride waste slag is washed with water for...

Embodiment 3

[0051] This embodiment provides a method for comprehensive utilization of water treatment agent polyaluminum chloride waste residue, the steps of which are roughly the same as those in Embodiment 2, except that in this embodiment: the mud cake is combined with the biochemical sludge and The mass-to-number ratio of the fly ash is 17:2:1.

[0052] The biochemical sludge used as the raw material for the preparation of ceramsite in the above-mentioned embodiments all comes from municipal sludge in Gongyi City. Since the sludge contains a large amount of organic matter, a large number of pores are formed after high-temperature carbonization, which is beneficial to the production of ceramsite. In addition, because the sludge itself has a certain calorific value, the amount of fuel used in the firing process is reduced, thereby realizing the comprehensive utilization method of polyaluminum chloride waste slag, a water treatment agent, which is convenient for local materials, and the g...

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Abstract

The invention provides a water treatment agent polyaluminum chloride waste residue comprehensive utilization method. The method includes performing Cl<-> removing treatment on water treatment agent polyaluminum chloride waste residue to obtain a Cl<-> removing treatment solution and mixed slurry; performing static sedimentation layering treatment on the mixed slurry to obtain bottom particles, middle layer particles and upper layer slurry; obtaining mud cakes after clear liquid is filtered by pressing the upper layer slurry, and performing mixed granulation and sintering on the mud cakes, biochemical sludge and fly ash so that ceramsite can be prepared; placing the dechlorination treatment solution in three-effect four-body forced circulation evaporation equipment or MVR forced circulationevaporation equipment to perform cyclic evaporation concentration treatment so that liquid polyaluminium chloride can be prepared; and performing spraying treatment on the bottom particles so that aluminized sand can be obtained. The method can make each component in the water treatment agent polyaluminum chloride waste residue fully recycled, and no new waste is discharged during the whole process, so that the pollution problem of everywhere stacking of the water treatment agent polyaluminum chloride waste residue can be solved, and resource recycling can be realized as well. The method is simple in technology step and easy to industrialize and popularize.

Description

technical field [0001] The invention relates to the field of water purifying agents, in particular to a method for comprehensively utilizing polyaluminum chloride waste slag as a water treatment agent. Background technique [0002] The water treatment agent polyaluminum chloride waste residue is a mixture containing complex components such as aluminum, silicon, calcium, magnesium, iron, titanium, etc. For a long time, most of the waste residue is dumped and landfilled at will, which has a large environmental risk. In the recent stage, environmental protection supervision has become more and more stringent, and waste residues are no longer allowed to be dumped or landfilled. The outlet for waste residues has become a key issue for the survival of enterprises. [0003] In order to reduce the waste residue production, enterprises usually replace the original water treatment agent production process of bauxite plus calcium aluminate plus hydrochloric acid with aluminum hydroxide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/56C04B28/00C04B33/132C04B33/135C04B38/00
CPCC01F7/56C04B28/00C04B33/1321C04B33/1352C04B38/009C04B2111/00017C04B14/02C04B18/04Y02P40/60
Inventor 焦天伟焦猛刘松涛赵晓武
Owner 河南省福可思环保科技有限公司
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