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Method for repairing phosphorus polluted water body by using polygonum hydropiper

A technology of phosphorus pollution and polygonum, applied in the field of bioremediation of phosphorus-polluted water bodies, can solve problems such as insufficient plant resources, and achieve the effects of good treatment effect, good effect and strong operability

Inactive Publication Date: 2011-08-17
SICHUAN AGRI UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to provide a new plant resource that can be used to treat phosphorus-contaminated water from livestock and poultry manure, aiming at the shortage of plant resources used to treat phosphorus-contaminated water bodies in the prior art. Fecal phosphorus pollutes water bodies, which has the characteristics of low cost, good treatment effect and strong operability

Method used

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  • Method for repairing phosphorus polluted water body by using polygonum hydropiper

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Embodiment

[0017] The invention discloses a method for repairing phosphorus-polluted water bodies by using Polygonum hydroponica, planting Polygonum hydroponica in the phosphorus-polluted water bodies polluted by livestock and poultry feces.

[0018] The method of direct transplanting or direct seeding of Polygonum hydroponica sampling when planting.

[0019] The planted Polygonum hydroponica is harvested regularly and returned to the soil as a green manure.

[0020] The following is the test analysis result of this method:

[0021] The sewage was taken from the sewage treatment plant of Sichuan Agricultural University. Two kinds of water samples were used for testing: sewage after preliminary purification by the sewage treatment plant and untreated livestock and poultry manure water. The physical and chemical properties of the tested water samples are listed in Table 1.

[0022] Table 1 Basic physical and chemical properties of the two water samples tested

[0023]

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Abstract

The invention relates to biological repair of a phosphorus polluted water body, in particular to a method for repairing a phosphorus polluted water body by using polygonum hydropiper. The method for repairing the phosphorus polluted water body by using the polygonum hydropiper comprises the following steps of: planting the polygonum hydropiper into the phosphorus polluted water body polluted by livestock and poultry excrements, wherein a direct transplanting or direct seed sowing method is adopted when the polygonum hydropiper is planted; and periodically harvesting the planted polygonum hydropiper, wherein the harvested polygonum hydropiper is used as a green manure and returned to the soil. The method has the advantages of low cost, good treatment effect, strong operability and the like.

Description

technical field [0001] The invention relates to bioremediation of phosphorus-polluted water bodies, in particular to a method for repairing phosphorus-polluted water bodies by using Polygonum hydroponica. Background technique [0002] Phosphorus is one of the key nutrients that stimulate the growth of algae and other photosynthetic aquatic organisms, and may eventually induce eutrophication in water bodies. Phosphorus is considered one of the main inducing factors for eutrophication in water bodies. Due to its greater risk of negative impact on the water environment, it is urgent to reduce the excess phosphorus content in water to normal levels. Therefore, the removal of high levels of phosphorus in polluted water is of great significance for the control of water eutrophication. General phosphorus removal methods mainly include physical and chemical methods and biological methods. However, the removal of phosphorus by physical and chemical methods consumes a lot of energy,...

Claims

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Application Information

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IPC IPC(8): C02F3/32
CPCY02W10/10
Inventor 李廷轩郑子成王永东余海英张锡洲曾凡凤黄霞何淑勤
Owner SICHUAN AGRI UNIV
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