Application of mentha haplocalyx in purification of waste water containing Cr(VI) and Zn(II)

A fish herb and waste water technology, applied in the field of water treatment, can solve the problems of poor cold resistance, secondary pollution, insufficient plant species resources, etc., and achieve the effects of low operating cost, good effect and high medicinal value.

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A fish herb and waste water technology, applied in the field of water treatment, can solve the problems of poor cold resistance, secondary pollution, insufficient plant species resources, etc., and achieve the effects of low operating cost, good effect and high medicinal value.

CN102531186AInactive Publication Date: 2012-07-04CHONGQING UNIV OF ARTS & SCI

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Embodiment 1

[0018] The construction of embodiment 1 plant ecological floating bed

[0019] The ecological floating bed is a cuboid device with a decent size of 2.0m×1.5m, an effective water depth of 1.2m, and an effective volume of 3.6m 3 Place the floating bed carrier therein, and inlay planting blue therein, plant 8 plants in each planting blue, fill the waste masonry of diameter 1cm in the planting blue to prevent the plant from lodging and fix it with a sponge. The waste masonry is also a carrier for the microbial film to increase the microbial mass of the floating bed and improve the water quality.

[0020] In the constructed floating bed system, after the heavy metal wastewater enters the pool through the rotameter, it enters the ecological floating bed area from the bottom with a water inflow rate of 1.6L / h and a hydraulic retention time of 7 days. The weir flows out, and then flows out of the floating bed system after flowing through a 15cm thick and 2m long sand ditch. The diag...

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Abstract

The invention discloses application of mentha haplocalyx in heavy metal waste water treatment and belongs to the field of waste water treatment. The technical scheme adopted by the invention is as follows: mentha haplocalyx is planted in a heavy metal waste water environment, the absorption effect of the mentha haplocalyx to pollutants such as Cr(VI), Zn(II) and the like in waste water and the characteristics of strong life force, direct planting, no special management and perennation of the mentha haplocalyx are utilized, the mentha haplocalyx is planted into the heavy metal polluted water environment, and heavy metal in the waste water is absorbed, thus the aim of purification is realized. According to the invention, the operating cost is low, the effect is good, the operation is simple and practicable, the purification effect is guaranteed while a new plant resource variety used for heavy metal waste water treatment is developed, and the mentha haplocalyx with medical value can be recycled and utilized, thus providing new thinking for deep development of heavy metal waste water treatment by adopting an ecological floating bed technology and achieving far-reaching significance.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to the application field of purifying waste water containing Cr(VI) and Zn(II) by using a plant ecological floating bed. Background technique [0002] Phytoremediation technology is an emerging surface water pollution treatment technology. Its principle is to use the tolerance and excess accumulation ability of plants to heavy metals and combine their symbiotic microbial system to achieve the restoration of heavy metal polluted environments. Using the enrichment ability of aquatic plants to regularly and continuously harvest mature plants and properly treat them can not only purify water quality, but also recycle some precious metals, which is an effective way to prevent and control water pollution. Compared with other surface water pollution control methods, it has low treatment cost, green safety, and has a certain ecological landscape effect. These advantages make phytoremediation ...

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Application Information

Patent Timeline

04 Jul 2012

Publication

CN102531186A

IPC: C02F3/32; C02F101/20; C02F101/22

Inventors: 朱启红; 夏红霞