Ecological restoration structure of petroleum hydrocarbon-heavy metal compound pollution sludge as well as construction method and restoration method of ecological restoration structure

A composite pollution and ecological restoration technology, applied in the field of environmental ecological restoration and waste resource utilization, can solve the problems of large amount of dredging, unrealized elimination of pollutants, high cost of sludge dehydration and solidification, and achieves low construction cost and convenient construction. , the effect of water permeability modification

Active Publication Date: 2019-03-01
GEZHOUBA ZHONGGU TECH CO LTD
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

In fact, in engineering practice, the dredging volume of rivers with severe siltation is large, and the cost of dehydration and solidification of silt is too high; In the environment, the elimination of pollutants has not been realized, and there are certain environmental risks

Method used

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  • Ecological restoration structure of petroleum hydrocarbon-heavy metal compound pollution sludge as well as construction method and restoration method of ecological restoration structure
  • Ecological restoration structure of petroleum hydrocarbon-heavy metal compound pollution sludge as well as construction method and restoration method of ecological restoration structure
  • Ecological restoration structure of petroleum hydrocarbon-heavy metal compound pollution sludge as well as construction method and restoration method of ecological restoration structure

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Experimental program
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Effect test

Embodiment 1

[0051] The construction method of the ecological restoration structure of the above-mentioned petroleum hydrocarbon-heavy metal compound polluted sludge will be described in detail below.

[0052] 1. After dredging the petroleum hydrocarbon-heavy metal compound polluted sludge in a certain city's river, it is piled up in the cofferdam to drain, and then dehydrated and modified to solidify / stabilize the petroleum hydrocarbons and heavy metals. The dehydration treatment can be modified by HAS sludge To solidify and dehydrate the sludge, refer to "Construction Method of In-Situ Modification and Solidification of Silt Soft Soil with HAS Sludge Modifier". It can also use dehydration machinery such as plate filter press for dehydration treatment. For details, refer to "Integrated Construction Method for Mechanical Dehydration and Chemical Modification of Sludge" to obtain silt modified soil with a moisture content of 35-50%. The leaching concentration of heavy metals and other pollu...

Embodiment 2

[0061] After the construction of the ecological restoration landscape stacking structure of the above-mentioned petroleum hydrocarbon-heavy metal compound polluted sludge is completed, the restoration work will be carried out. The specific restoration methods are as follows:

[0062] 1. Select the agricultural commercial EM liquid bacterial agent containing Bacillus megaterium, Bacillus licheniformis, Bacillus subtilis, and Bacillus colioids (Zhengzhou Qifu Agricultural Science and Technology Co., Ltd.-EM bacterial solution), and put the agricultural commercial EM solution every 2 weeks. The liquid bacterial agent is diluted 500 times with water to obtain the bioremediation bacterial liquid, and the bioremedial bacterial liquid is added to the earthwork pile through the porous water-permeable blind pipe A of each permeable structure, and 120 liters of agricultural commercial EM liquid bacterial agent is added each time;

[0063] 2. The pH of the silt-modified soil is 7.20, the pe...

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Abstract

The invention discloses an ecological restoration structure of petroleum hydrocarbon-heavy metal compound pollution sludge as well as a construction method and a restoration method of the ecological restoration structure. The structure comprises a surface anti-seepage layer, an earthwork piled mountain, a vegetation layer and a micro wetland, wherein the earthwork piled mountain is formed by alternately piling and filling a plurality of restoration soil layers and a plurality of drainage layers; the earthwork piled mountain is piled on the surface anti-seepage layer, the lowermost layer of theearthwork piled mountain is the drainage layer, and the uppermost layer of the earthwork piled mountain is the restoration soil layer; the vegetation layer is planted on the surface layer of the earthwork piled mountain; a plurality of permeable structures are uniformly distributed in each restoration soil layer, a plurality of permeable structures are arranged between each restoration soil layerand the lowermost drainage layer, the edge of the periphery of the lowest drainage layer is surrounded by a spray drain, and the spray drain is connected with the micro wetland through a connecting culvert. The restoration structure is simple and multifunctional. The construction method of the restoration structure is convenient to operate and has low construction cost. The petroleum hydrocarbon-heavy metal compound pollution sludge can be restored, and the restoration structure is easy to operate and good in restoration effect.

Description

technical field [0001] The invention relates to the technical field of environmental ecological restoration and waste resource utilization, in particular to an ecological restoration structure of petroleum hydrocarbon-heavy metal compound polluted sludge and its construction method and restoration method. Background technique [0002] Sediment is one of the important components of the river ecosystem. It is not only an important link in the nutrient cycle in the river, but also an important accumulation place for pollutants. With the large-scale development of water conservancy and water environment improvement projects in my country, a large amount of dredged sediment is produced every year. Due to the large amount of dredged sediment, high moisture content, and complex composition, random accumulation not only affects the landscape, but may also cause secondary pollution, which will adversely affect the environment and human health. The organic matter and nutrients requir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/10B09B3/00
CPCB09B3/00B09C1/105B09C2101/00
Inventor 李世汨章玉泉洪军肖林李茜吴建康匡丕桩
Owner GEZHOUBA ZHONGGU TECH CO LTD
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