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Riverway permeable reaction wall system and use thereof

A technology of permeable reactive walls and river channels, applied in water/sewage treatment, water/sludge/sewage treatment, biological water/sewage treatment, etc., to achieve simple structure, low operation and management costs, and good results

Active Publication Date: 2009-05-20
安徽环境科技集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] PRB technology has the advantages of good treatment effect, low operation and maintenance costs, and long treatment time. With the deepening of research, a few foreign researchers have applied this technology, which was originally used for groundwater pollution prevention and control, to the restoration of surface polluted water bodies. However, its research results are still far from practical engineering applications, and there are few domestic reports on this aspect. The basic research on the application of this technology in this aspect is an important research direction of PRB technology in the future.

Method used

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  • Riverway permeable reaction wall system and use thereof
  • Riverway permeable reaction wall system and use thereof
  • Riverway permeable reaction wall system and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] One river flows into the lake with an average water depth of 2.0m. The embankment follows a natural gentle slope with a width of 4-6.5m at the top of the embankment. Generally, the height of the embankment top is 2.0m. Since the middle and upper reaches of the river flow through a certain urban area, the sources of incoming water pollution are mainly urban domestic sewage and some industrial wastewater, and the average water quality is: COD Cr 57.34mg / L, TN10.60mg / L, TP0.61mg / L, the river water quality is black and smelly.

[0033] In order to restore the water quality of the river, a semi-buried river PRB system was established on one side of the embankment (the schematic diagram is shown in figure 2As shown), excavate one meter down to the top of the embankment, and transport the excavation outside. In order to ensure the safety of the embankment, a number of pine piles with a length of about 1.5m are driven into the bottom surface in a format of 0.5m×0.5m. After exc...

Embodiment 2

[0036] One river is a typical urban pollution-receiving river with an average water depth of 2.5m. The embankment follows a natural gentle slope with a width of 4.5-6m at the top of the embankment. Generally, the height of the embankment top is 2.0m. The source of water pollution is mainly urban domestic sewage, and the average water quality is: COD Cr 75.91±27.98mg / L, TN5.02±1.90mg / L, TP0.25±0.12mg / L, the river water quality is black and smelly.

[0037] In order to restore the water quality of the river, a ground-type river PRB system (as shown in Figure 3) is established on one side of the embankment. The system is composed of a single water treatment unit, and the dimensions of each part are: the water inlet tank 4 is 150cm long x 216cm wide x 150cm high , PRB wall 6 length 276cm×width 216cm×height 120cm, outlet tank 9 length 40cm×width 216cm×height 120cm, to prevent water seepage, the bottom and sides of the system are treated with anti-seepage. The system uses iron fili...

Embodiment 3

[0040] In this embodiment, on the basis of the system in Embodiment 2, the non-point source pollution near the river is also included in the treatment category of the system (the improved system is shown in Figure 4).

[0041] With the advancement of centralized non-point source agricultural sewage treatment projects in villages and towns, after January 2008, most of the non-point source pollution entering the river near the river in Example 2, such as agricultural sewage in farmland and vegetable fields, has been concentrated. The average water quality of this part of sewage entering the river is COD Cr 94mg / L, TN21.5mg / L, TP1.3mg / L.

[0042] Use the river PRB system in Example 2 to treat this part of the sewage according to the original working conditions, and then discharge it into the river. The system began to operate according to this working condition in February 2008. After continuous operation, good results have been achieved. Non-point source The water quality of th...

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Abstract

The invention discloses a river channel permeable reaction wall system and the application thereof in water pollution treatment. In the system, one or a plurality of water treatment units are arranged on water banks in a ground mode, a half-buried mode or an all-buried mode; a water distribution system leads the river water to be continually treated by the water treatment units and then be returned to the river channel, or the water distribution system leads the surface-source type polluted water body near the river channel to be treated by the water treatment units and then be returned to the river channel; the water treatment unit comprises an water inlet groove, a permeable reaction wall and a water outlet groove, wherein, the water inlet groove is separated from the permeable reaction wall by a reticular grating. The system properly alters the water banks without occupying other land resources. Based on the original PRB technical principle, the system alters the water banks to cause the water to agree with river channel water quality purification and river-entering pollution control without affecting the function of the river channel. The system has remarkable effect to the water quality treatment of lake-entering rivers and urban pollutant holding rivers and the control of river surface source type pollution.

Description

technical field [0001] The invention belongs to the technical field of water pollution control engineering, and in particular relates to a new river channel water pollution restoration technology-a river channel permeable reactive wall (PRB) system, which can be directly applied to water pollution purification and control projects, such as polluted river channel treatment, water Environmental ecological restoration, river (lake) pollution control and other occasions. Background technique [0002] Permeable reactive barrier (PRB for short, also known as permeable reactive barrier or permeable reactive grid) is a groundwater pollution remediation technology that has been widely studied in developed countries in Europe and America and has begun preliminary commercial application. . As early as 1982, this technology was introduced in the Environmental Disposal Handbook issued by the US Environmental Protection Agency (USEPA). The "PRB Technology for Pollutant Remediation" manu...

Claims

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Application Information

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IPC IPC(8): C02F1/00C02F3/00
Inventor 谌建宇许振成骆其金廖柏寒林方敏罗隽
Owner 安徽环境科技集团股份有限公司
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