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A system for purification and reuse of construction wastewater from temporary concrete mixing station in highway construction

A wastewater purification and concrete technology, which is applied in multi-stage water treatment, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of lack of degreasing function, complicated maintenance and management, high engineering cost, etc., and improve the effect of precipitation purification , Extensive utilization value, and the effect of increasing hydraulic retention time

Active Publication Date: 2022-07-08
CHINA ACAD OF TRANSPORTATION SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a construction waste water purification and reuse treatment system for road construction temporary concrete mixing plants, which can effectively overcome the low purification efficiency, large floor area, high engineering cost and maintenance problems in the prior art. The shortcomings and problems such as complicated management and lack of degreasing function are aimed at the large amount of wastewater generated in the temporary concrete mixing station of road construction, which mainly has pollutants such as stone, sand, cement, suspended particulate matter (SS), petroleum oil, etc. Stable and efficient removal effect, and at the same time, it can realize the segmented removal, classified collection and recycling of stone, sand, cement and water

Method used

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  • A system for purification and reuse of construction wastewater from temporary concrete mixing station in highway construction
  • A system for purification and reuse of construction wastewater from temporary concrete mixing station in highway construction
  • A system for purification and reuse of construction wastewater from temporary concrete mixing station in highway construction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] A method for purifying and reusing construction waste water of a temporary concrete mixing station for highway construction, which specifically includes: after the waste water from the mixing station and the washing waste water of concrete transport vehicles are removed through a grid 3 to remove large-diameter stones, and then collected into a centralized The primary sedimentation tank 4, then enters the primary sedimentation oil separator (6) through the overflow hole (5), adds flocculant, and after sedimentation and oil separation purification, enters the secondary sedimentation filter tank 9 through the filter hole 8, After precipitation and filtration, it enters the tertiary precipitation filter tank 11 through the filter hole 10, and after further precipitation and filtration, it enters the reuse tank 13 through the filter hole 12, and the reused water pump 14 is used for comprehensive utilization of the treated wastewater. The primary sedimentation tank 4 is commu...

experiment example 1

[0068] Experimental Example 1 See Example 1 for the specific construction wastewater purification and reuse treatment method of temporary concrete mixing station for highway construction, in which polyaluminum chloride (PAC) was added as a flocculant in the primary sedimentation grease trap.

experiment example 2

[0069] Experimental Example 2 See Example 1 for the specific construction wastewater purification and reuse treatment method of temporary concrete mixing station for highway construction, in which polyferric sulfate (PFS) was added as a flocculant in the primary sedimentation grease trap.

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Abstract

The invention relates to a construction waste water purification and reuse system of a temporary concrete mixing station in highway construction, which belongs to an environmental protection system in highway construction. Specifically provided is a method and process for comprehensive purification treatment and classification collection of grid screening, natural precipitation, oil separation, filtration, etc., and classification collection of construction waste water from a temporary concrete mixing station for highway construction. The waste water from the station can be discharged by overflow or used for washing the site of the mixing station, cleaning tank cars, and greening. impact on the water environment.

Description

technical field [0001] The method and system provided by the invention can be used for the comprehensive purification and reuse of construction waste water, flushing waste water and field rainwater of concrete mixing stations temporarily set in highway construction, water quality purification of construction waste water near sensitive water bodies, and Construction wastewater and other fields of purification and treatment of sewage with similar water quality characteristics to concrete mixing station construction wastewater. Background technique [0002] With the rapid development of the national economy, the construction of highway transportation infrastructure has ushered in a new golden period and a period of great opportunity. At the same time as the great development of expressways, the reconstruction of national and provincial trunk lines and the construction of rural roads have also ushered in a new development climax. These A large part of highway engineering project...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04
CPCC02F9/00C02F1/001C02F2001/007C02F1/40C02F1/5281C02F1/5236C02F2301/08
Inventor 陶双成姚嘉林李云鹏高硕晗熊新竹孔亚平王倜王新军刘学欣
Owner CHINA ACAD OF TRANSPORTATION SCI
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