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Soil remediation and sewage purification integrated ecological treatment device

A technology for sewage purification and soil remediation, applied in water/sewage multi-stage treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc. High cost and other problems, to achieve the effect of good effect and easy operation

Active Publication Date: 2012-07-11
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing soil remediation technology not only has high construction and operation costs, but also complicated operation methods, and the remediation effect is not high

Method used

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  • Soil remediation and sewage purification integrated ecological treatment device
  • Soil remediation and sewage purification integrated ecological treatment device

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Embodiment Construction

[0029] Please combine figure 1 As shown, the integrated ecological treatment device for soil restoration and sewage purification provided by the present invention has a main structure of:

[0030] The constructed wetland is a surface flow constructed wetland, which consists of five parts from top to bottom: surface soil layer 3, advanced treatment layer 4, drainage layer 5, filter layer 6, and aquifer layer 7. The thickness of the surface soil layer 3 is 0.5m. It is a composite soil composed of heavy metal-infected soil, zeolite molecular sieve and a small amount of bentonite. It can be used for planting plants. , Houttuynia cordata, golden leaf privet, reed and red bean grass, etc., while absorbing heavy metals, it also has a landscape effect; the advanced treatment layer 4 is iron-carbon filler with a thickness of 0.3m; the drain layer 5 is gravel with a thickness of 0.2m, The particle size is 4mm-8mm; the filter layer is non-woven fabric with a thickness of 50mm; the thick...

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Abstract

The invention relates to a soil remediation and sewage purification integrated ecological treatment device. In the device, constructed wetland is surface flow constructed wetland and sequentially comprises a surface soil layer, a deep treatment layer, a draining layer, a filter layer and a water guide layer from top to bottom, wherein the surface soil layer is composite soil formed by mixing soilinfected by heavy metal, a zeolite molecular sieve and bentonite; the deep treatment layer is iron carbon filler; the draining layer is gravel; the filter layer is non-woven fabric; upper and lower layers of gravel fillers are paved on the water guide layer and the middle part of the water guide layer is separated by the non-woven fabric; an alkaline injection device is arranged at the water inlet end of the constructed wetland and used for controlling the pH value of the constructed wetland and preventing the heavy metal in the constructed wetland from being separated out; an aeration disc is arranged at the bottom of an integrated ecological pool; a water distributor is arranged above the aeration disc; flowing fillers are filled in the integrated ecological pool; an artificial ecological floating bed is floated on the surface of the pool; and a water outlet of the constructed wetland is connected with the integrated ecological pool through a pressure pump. The device performs soil remediation and sewage purification and makes the soil remediation process simple and practical.

Description

technical field [0001] The invention belongs to the joint technology of sewage treatment and soil remediation, and specifically relates to an integrated ecological treatment device for soil remediation and sewage purification, which repairs the land contaminated by heavy metals while treating sewage. It is composed of an integrated ecological pool. [0002] The invention also relates to a method for soil restoration and sewage purification by using the above-mentioned device. Background technique [0003] In recent years, my country's heavy metal pollution alarm bells have sounded frequently, from the "blood lead incident" to the "cadmium rice storm" that shocked the country, one after another. If the heavy metal pollution in the soil continues to occur, according to the current development trend, the soil heavy metal pollution will be reduced in a few years. The accumulation of pollution will be further aggravated, and once the heavy metal content reaches the level of patho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14B09C1/00B09C1/10C02F3/32C02F3/34
CPCY02W10/10
Inventor 席北斗张列宇王雷苏婧霍守亮何连生万书名
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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