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Method for preparing ceramsite from waste slag of polyaluminum chloride as water treatment agent

A polyaluminum chloride waste slag and water treatment agent technology, which is applied in the fields of application, ceramic products, clay products, etc., can solve the problems that cannot be fully realized, and achieve the effect of simple steps, increased specific surface area, and strong adsorption

Active Publication Date: 2022-02-08
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

However, the above methods all need to add new chemical components or use new resources to the polyaluminum chloride production residue, and cannot fully realize the concept of "treating waste with waste".

Method used

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  • Method for preparing ceramsite from waste slag of polyaluminum chloride as water treatment agent
  • Method for preparing ceramsite from waste slag of polyaluminum chloride as water treatment agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This embodiment provides a method for producing ceramsite by utilizing waste residue of water treatment agent polyaluminum chloride, such as figure 1 As shown, it specifically includes the following steps:

[0042] DeCl - Treatment Utilize the decomposer to carry out water elution of Cl - Treatment and use of lye for deCl - treatment, get off Cl - Treatment liquid and mixed mud; the mass percent concentration of the lye is 10%; the lye is a sodium hydroxide solution; the decompelling device is a hydropulper;

[0043] Static stratification The mixed mud is subjected to static sedimentation and stratification treatment to obtain a mixture containing bottom particles, middle layer particles and upper layer mud;

[0044] Waste slag separation: Separating the middle layer particles and the upper layer mud sequentially from the mixture containing the bottom layer particles, middle layer particles and upper layer mud; the upper layer mud is filtered to obtain a mud cake; ...

Embodiment 2

[0048] This embodiment provides a method for producing ceramsite by utilizing waste residue of water treatment agent polyaluminum chloride, such as figure 2 As shown, it specifically includes the following steps:

[0049] DeCl - Firstly, the water treatment agent polyaluminum chloride waste slag is roughly selected to obtain the water treatment agent polyaluminum chloride waste slag with a particle size greater than 15mm and the water treatment agent polyaluminum chloride waste slag with a particle size less than 15mm; 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 with a particle size of less than 15mm after rough selection and crushing is performed using a decomposer. The waste slag of polyaluminum chloride was washed with water for the first time in sequence - Treatment, alkaline elut...

Embodiment 3

[0055] This embodiment provides a method for producing ceramsite by utilizing waste slag of polyaluminum chloride, a water treatment agent, the steps of which are roughly the same as those in Example 2, except that:

[0056] In this embodiment, the mass-number ratio of mud cake to biochemical sludge and fly ash is 85:10:5; the temperature for firing the pellets to be fired is 1300°C, and the firing time is 30min.

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Abstract

The invention provides a method for preparing ceramsite by utilizing polyaluminum chloride waste slag of a water treatment agent. ‑ treatment, get off Cl ‑ Treatment liquid and mixed mud, the mixed mud is subjected to static sedimentation and sieving treatment to obtain bottom layer particles, middle layer particles and upper layer mud; the upper layer mud is filtered to obtain a mud cake after filtering out the clear liquid, according to the ratio of parts by mass The ratio of (80-100): (0-20): (0-20) is used to mix and granulate the mud cake with biochemical sludge and fly ash to obtain pellets to be burned, and then granulate them at a temperature of 1000°C The granules to be fired are fired at ~1300° C. and cooled to room temperature to obtain ceramsite. The internal structure of the ceramsite prepared by this method is uniform, which can not only make full use of the polyaluminum chloride waste residue resource of the water treatment agent, but also solve the problem of random stacking of biochemical sludge to pollute the environment, and also utilize the heat of combustible components in the biochemical sludge . The method has simple steps and is easy to be popularized industrially.

Description

technical field [0001] The invention relates to the field of water purifiers, in particular to a method for preparing ceramsite by utilizing polyaluminum chloride waste residue of a water treatment agent. Background technique [0002] Ceramsite is a lightweight aggregate produced by foaming in a rotary kiln. It has a spherical shape, a smooth and hard surface, and a honeycomb shape inside, with the characteristics of low density, low thermal conductivity and high strength. In the refractory industry, ceramsite is mainly used as aggregate of heat-insulating refractory materials, ceramsite concrete, ceramsite filter material, etc. According to the source of raw materials, ceramsite can be divided into bauxite ceramsite sand, clay ceramsite, shale ceramsite, garbage ceramsite, coal gangue ceramsite, biological sludge ceramsite, river bottom sand ceramsite, fly ash According to the strength, ceramsite can be divided into high-strength ceramsite and ordinary ceramsite; accordin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/00C04B33/135C04B33/132C04B33/13
CPCC04B33/13C04B33/132C04B33/1321C04B33/1352C04B38/009C04B2235/6567Y02P40/60
Inventor 焦猛焦天伟刘松涛
Owner 河南省福可思环保科技有限公司
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