A recycling process and recycling system for waste water and residue of concrete mixing plant

A technology of concrete waste and concrete, which is applied in the direction of mixer, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., and can solve the problem that waste slurry water cannot be completely consumed and disposed of, waste slurry water consumption, environmental pollution, etc. problems, to achieve resource utilization, reduce pollution, and avoid excessive load

Active Publication Date: 2022-04-01
中建西部建设北方有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the problem with this method is that when the concrete production volume is small, only a limited amount of waste slurry water can be consumed, and a large amount of remaining waste slurry water cannot be completely consumed and disposed of, resulting in a great waste of resources and environmental pollution

Method used

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  • A recycling process and recycling system for waste water and residue of concrete mixing plant
  • A recycling process and recycling system for waste water and residue of concrete mixing plant
  • A recycling process and recycling system for waste water and residue of concrete mixing plant

Examples

Experimental program
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Effect test

Embodiment 1

[0049] refer to figure 1 , The waste water and residue reuse system of the concrete mixing plant includes a sand and stone separation unit, a waste slurry water collection and monitoring unit, a waste slurry water control unit, a reuse unit, and a control unit; the sand and stone separation unit includes a waste water tank and a sand and stone separator; the waste slurry The water collection and monitoring unit includes an oil-water separator, a waste slurry tank, a homogenization tank, a stirring device, and a slurry water monitoring device; the waste slurry water control unit includes a liquid level monitoring device, a filter press, a reuse pool, a filter residue storage slurry device, and Slurry water metering device; the recycling unit includes a sand storage bucket, a stone storage bucket and a metering device. The metering device includes a first metering piece matched with the sand storage bucket, a second metering piece matched with the stone storage bucket, and a homo...

Embodiment 2

[0067] This embodiment discloses a process for reusing waste water and slag from a concrete mixing plant, which differs from the process for reusing waste water and slag in a concrete mixing plant disclosed in Example 1 in that:

[0068] S23. Use an online water quality monitor to monitor the pH value, sulfate ion concentration, and chloride ion concentration of the homogenate water, and use a tuning fork concentration detector to monitor the concentration of the homogenate water;

[0069] When the monitored value of the homogenized water is detected to be higher than the standard value, the control unit gets feedback, controls the reuse water pool to supply water to the homogenized tank, and dilutes the homogenized water in the homogenized tank until the monitored value of the homogenized water is adjusted below the standard value;

[0070] During the peak production period of the concrete mixing plant, when the accumulation rate of the filter residue is greater than the recy...

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Abstract

This application relates to a process and system for reusing wastewater and slag of concrete mixing plants in the field of recycling and utilization of building materials. The reusing process includes the following steps: separating the waste slag of concrete to obtain coarse aggregate, fine aggregate and recycled slurry, The obtained coarse aggregate and fine aggregate are used for concrete production; the obtained recycled slurry water and the wastewater of the concrete mixing plant are degreased, collected and stored to obtain waste slurry water; the obtained waste slurry water is stirred to obtain homogenate Water, for the waste slurry water that cannot be reused in time, perform pressure filtration treatment to obtain filter residue and recycled water; monitor the concentration and pH value of the obtained homogenate water, and use the homogenate water with qualified monitoring values ​​for concrete production; The utilization system includes a sand and gravel separation unit, a waste slurry water collection and monitoring unit, a waste slurry water control unit, a reuse unit, and a control unit; both the process and the system of this application have the effect of being able to fully recycle and reuse the waste water and waste residue of the concrete mixing plant .

Description

technical field [0001] The application relates to the field of recycling of building materials, in particular to a recycling process and a recycling system for waste water and residue of a concrete mixing plant. Background technique [0002] With the wide application of commercial concrete, concrete mixing stations produce a large amount of waste water and waste while producing commercial concrete. The discharge of these wastes mainly comes from the waste water and waste slurry produced by cleaning the mixer truck, the mixer main engine, and washing the production site, as well as the surplus of concrete factory monitoring and sampling, surplus and scrap concrete caused by irresistible factors. [0003] In order to reduce the impact of waste slurry water discharge on the environment, the main disposal method of concrete enterprises at present is to use sand and gravel separation equipment to separate sand and gravel for recycling, and then add a certain amount of clean water...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D36/00C02F9/02B01F33/83
CPCB01D36/00C02F1/40C02F1/001B01F33/831
Inventor 张凯峰童小根王军罗作球孟刚张磊邰炜胡宇博王佳敏王国峰
Owner 中建西部建设北方有限公司
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