Waste commodity concrete recovery and recycling technology

A commercial concrete and concrete technology, applied in solid waste management, sustainable waste treatment, climate sustainability, etc., can solve the problems of resource waste, ecological environment damage, etc., and achieve the effects of cost saving, material cost saving, and consumption saving.

Inactive Publication Date: 2017-02-01
SHANGHAI ERSHIYE CONSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a recycling process for waste commercial concrete, which solves the problem that the concrete mixing station can

Method used

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Examples

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Embodiment 1

[0026] A process for recycling waste commercial concrete, wherein the process steps are as follows:

[0027] (a) Wash commercial concrete with water;

[0028] (b) separating the waste residue and waste water mixture produced in step (a) into sandstone and waste slurry;

[0029] (c) reclaim the sand and gravel in step (b), and send the waste slurry to the primary sedimentation tank;

[0030] (d) Waste residue salvage: After the waste residue in the primary sedimentation tank is settled, the supernatant liquid flows freely to the secondary sedimentation tank through the overflow port on the upper part of the primary sedimentation tank, and the waste residue is fished out;

[0031] (e) Utilization of mud: After the determination of the solid particle content and pH value of the mud in the secondary sedimentation tank is completed, a part of the mud is taken out for recycling, and the other part of the mud enters the primary secondary tank through the overflow port on the upper p...

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PUM

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Abstract

The invention relates to a waste commodity concrete recovery and recycling technology. The technology comprises a, cleaning commodity concrete through water, b, dividing a waste slag-waste water mixture obtained by the step a into sand and waste slurry, c, recovering the sand obtained by the step b and feeding the waste slurry into a primary sedimentation basin, d, after the waste slag in the primary sedimentation basin is deposited, making the supernatant freely flow to a secondary sedimentation basin through an overflow mouth at the upper part of the primary sedimentation basin and taking out the waste slag, e, after solid particle content and pH measurement, taking out one part of the slurry for recovery and recycle from the secondary sedimentation basin, and feeding the other part of the slurry into a primary reclaimed water tank through an overflow mouth at the upper part of the secondary sedimentation basin, and f, feeding the supernatant in the primary reclaimed water tank into a secondary reclaimed water tank through an overflow mouth at the upper part, wherein reclaimed water in the secondary reclaimed water tank can be recovered and recycled so that waste commodity concrete recovery and recycling are realized. The technology saves a cost and is safe and environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of concrete recycling, in particular to a process for recycling waste commercial concrete. Background technique [0002] Commercial concrete is a concrete mixture that is sold at the mixing station after being measured and mixed, and then transported to the place of use by a transport vehicle within a specified time. During the mixing, transportation and use of commercial concrete, the commercial concrete in the mixer, mixer truck and pumping pipeline cannot be 100% utilized, and commercial concrete will inevitably remain on the mixing drum and the inner wall of the pipeline. During the cleaning process of production equipment such as mixers and mixer trucks in concrete mixing stations, waste residue and waste water will be generated. These waste commercial concrete, waste slag, and waste water have strong alkalinity, and if they are discharged directly, they will pollute the surrounding water and soil envi...

Claims

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Application Information

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IPC IPC(8): C04B18/16C04B22/00
CPCC04B18/167C04B22/0046Y02W30/91
Inventor 宋文智梁志远齐健汪晨晨马成云
Owner SHANGHAI ERSHIYE CONSTR CO LTD
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