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Biological renovation method for chromium pollution water

A bioremediation, chromium pollution technology, applied in water pollutants, water/sewage treatment, sustainable biological treatment, etc., to achieve high chromium removal rate, good removal effect, and simple operation.

Inactive Publication Date: 2008-10-29
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods have great limitations, especially in terms of treatment costs and secondary pollution.

Method used

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  • Biological renovation method for chromium pollution water
  • Biological renovation method for chromium pollution water
  • Biological renovation method for chromium pollution water

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Experimental program
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Embodiment

[0022] Such as figure 1 and figure 2 As shown, a surface flow artificial wetland device is established, which mainly consists of water inlet area (2), filling area (4) and water outlet area (6). The length ratio of the three areas is 1:8:1; the water inlet area (2) is provided with a water inlet (1); the filling area (4) is filled with filler, and Lishihe (8) is planted on the filler; the water outlet area (6 ) is provided with water outlet (7). The entire device is made of a plastic plate with a thickness of 0.5 cm, a slope of 1%, and a height of about 30 cm. , in order to ensure that the inflow and outflow are uniform, the inflow and outflow are all in the form of triangular weir (3) (5) overflow. The filler is made by mixing zeolite and red soil at a ratio of 1:1 (volume ratio). The thickness of the packing layer is 25cm. The entire device has an aspect ratio of 2:1.

[0023] The chromium polluted water enters the water intake area (2) from the water inlet (1), and a...

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Abstract

The invention discloses a bioremediation method of chromium polluted water. A surface flow constructed wetland device is built to lead the chromium-laden plant Leersia hexandra Swartz directly to grow on the well chosen filler; the chromium in the water can be removed by the action of the filler and the plant. The chromium absorbed in the filler can be effectively taken away by periodically reaping the overground part of the Leersia hexandra Swartz to lead the filler keep better treatment effect. The method has good removal effect on chromium with different forms and has the advantages of low cost, simple operation, low consumption, easy maintenance, high chromium removal rate and no secondary pollution, etc. The method can be used for repairing and controlling the chromium polluted water produced in electroplating, smelting and leather processing. The repaired water can achieve the requirement of the national related water standard.

Description

technical field [0001] The invention relates to a method for repairing chromium-polluted water bodies, in particular to a method for repairing chromium-polluted water bodies by using a special chromium-enriched plant material—Leersia hexandra Swartz. Background technique [0002] Chromium is an essential trace element in the metabolic process of humans and animals, but excess chromium has obvious carcinogenic and teratogenic effects on humans and animals (Shrivastava et al., "Microbiology", vol. 34, pp. 1-7, 2002) . Drinking water contaminated by chromium-containing industrial wastewater can cause diarrhea, dermatitis, stomach discomfort, liver damage and other poisoning symptoms (Gardea-Torresdey et al., "Archives of Environmental Contamination and Toxicology", 2005, Vol. 48, pp. 225-232 ). At the same time, chromium is also a common pollutant in water bodies. Chromium pollution in water is mainly trivalent chromium and hexavalent chromium, which come from various indust...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F1/62C02F101/22
CPCY02W10/10
Inventor 张学洪刘杰朱义年
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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