Application of polygonum capitatum in purifying livestock breeding biogas slurry

Abstract

The invention discloses application of polygonum capitatum in purifying livestock breeding biogas slurry, which belongs to the field of wastewater processing. The polygonum capitatum is planted in a livestock breeding biogas slurry pollution environment; and the function of the polygonum capitatum for absorbing pollution matters such as NH4+-N, TN, TP, CODcr in the livestock breeding biogas slurry, and the characteristics that the polygonum capitatum has tenacious vitality, can be planted directly, has no need to be managed specially, and is perennial are fully utilized, so that the problem of livestock breeding biogas slurry pollution is solved permanently. The investment is small, the operation cost is low, the effect is good, the operation is simple and easy to realize, and the purifying effect of an artificial wetland system in winter is ensured. The harvested polygonum capitatum can be used medicinally, and can be used for treating urinary tract infection, nephropyelitis and the like. The zephyranthes candida is utilized for processing wastewater, and the environment protection is combined with pharmaceutical plant cultivation, so that a sustainable development idea taking consideration of sewage processing, ecological restoration and economic construction is embodied, and the characteristic of combing theory research and practical application is realized.

Description

technical field [0001] The invention relates to the field of livestock and poultry breeding biogas slurry treatment, in particular to an application of artificial wetland plants to purify livestock and poultry breeding biogas slurry. Background technique [0002] In recent years, with the rapid development of the large-scale and intensive livestock and poultry breeding industry, the environmental pollution caused by the livestock breeding industry has become increasingly serious, and its impact on rural drinking water safety, irrigation water, soil, agricultural products and air quality and rural The living environment poses a great threat. Anaerobic digestion technology has been widely used in the bioenergy development and pollution control of livestock and poultry wastewater, which can effectively suppress the primary pollution of livestock and poultry wastewater; however, the biogas slurry of many large-scale farms is directly discharged, resulting in Serious secondary p...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a solution for the above-mentioned existing artificial wetland technology that can be used to purify biogas slurry of livestock and poultry because of insufficient plant species resources, low economic value, poor cold resistance, easy to die in winter, and unable to guarantee the purification effect of low temperature environment. A new plant resource that can be used to purify biogas slurry from livestock and poultry breeding

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