Method and system for floating composite botanical zone in situ biologically rehabilitating water body

Abstract

The invention discloses a method and a system for water in-situ ecological repair of floating composite botanical zone. It contains: placing smoothly the nonwoven fabrics of two or more than two layers in the cultivation trough on the ground, with extension rib and tensile rope as cultivation carrier, sowing the botanical seeds which can absorb contaminant in the nonwoven fabrics layers, using formulation nutrient solution or other nutrient-containing wastewater or sewage to proceed soilless culture, the botanical boot passing by the cultivation carrier and forming a composite botanical belt with cultivation carrier, moving to the polluted water and the floating composite botanical zone absorbing the contaminant in water as the growing needed nutrient and growing, moving on the ground at harvest time or alternative time, cutting the stems, leaves and roots and reusing the cultivation carrier, continuing in-situ and ecological repair. The invention is mainly used for polluted water in-situ ecological repair and wastewater treatment.

Description

technical field [0001] The invention relates to polluted water restoration and sewage treatment methods, in particular to a method and system for in-situ ecological restoration of water bodies with floating composite plants. Background technique [0002] At present, the shortage of water resources and water pollution have become common political, social, economic and important scientific and technological issues faced by many countries and regions. For developing countries, the situation is even more severe. my country has been listed as one of the 13 countries with poor water resources per capita in the world. Especially in some areas in North China and Northwest China, the shortage of water resources has become very serious, and the phenomenon of river cut-off and pollution is common. According to statistics, 82% of the country's inland rivers and lakes have been polluted to varying degrees, and red tides frequently break out on the seashore, which has caused great harm an...

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Problems solved by technology

[0006] In order to solve the technical problems of using plants to carry out in-situ and ecological restoration of polluted water bodies, the cultivation cost is high, the harvesting workload is large, and the management is difficult. The purpose of the present invention is to provide a method for in-situ ecological restoration of water bodies with floating composite plants And its system, using low-cost large-area non-woven fabrics as the cultivation carrier on land and supplemented by stretching ribs and tension-resistant ropes or tension-resistant nets between the non-woven fabric layers to cultivate composite plants made of a variety of suitable plant species. After the plant belt is bred, use the float and the limit rope to float the composite plant belt in a specific area of ​​the polluted water body, absorb the pollutants in the water body as nutrients through the plant growth, and drag the composite plant belt out of the water when harvesting or renewing, and finally will Pollutants are removed from the water body to achieve the purpose of in-situ and ecological restoration of the polluted water body. After the plants are harvested, the cultivation carrier is reused

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