Floating bed plant for degrading methomyl in water body

Abstract

The invention discloses a floating bed plant for degrading methomyl in a water body. The floating bed plant is planted on a floating bed in an aquaculture pond, and the absorption effectiveness of thefloating bed plant planted on the floating bed in the aquaculture pond to methomyl is verified. According to the floating bed plant for degrading methomyl in the water body, the growth speed of tilapia mossambica is reduced along with the increase of the concentration of methomyl in the water body. Oxidation pressure of tilapia mossambica liver can be increased due to methomyl pollution, and activity of SOD, CAT and GSH changes. Ipomoea aquatica can effectively reduce the content of methomyl in aquaculture water through organism absorption, has a certain purification effect on TN, NH4<+>-N, NO3<->-N, NO2<->-N and the like in methomyl polluted water, can reduce oxidative stress of tilapia livers, can effectively reduce pollution of methomyl to the water by planting the Ipomoea aquatica inthe water, and ensures growth of fishes.

Description

technical field [0001] The invention relates to the field of floating bed plants, in particular to a floating bed plant for degrading methomyl in water. Background technique [0002] At present, the main methods of pesticide pollution treatment include membrane separation method, flocculation method, adsorption method, coagulation precipitation method, wet oxidation method, ultrasonic technology method, incineration method, catalytic oxidation method, electrolysis method, biochemical method, etc. These methods are limited by treatment methods and costs, and few of them can be applied to the environment of aquaculture ponds. It is very necessary to study methods suitable for the purification of methomyl in pond aquaculture water. Ipomoea aquatica, also known as water spinach, is widely cultivated as a vegetable in China. Studies have found that planting Ipomoea aquatica on floating beds is often used to purify polluted water, which can effectively improve water quality and re...

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Problems solved by technology

Therefore, on the one hand, the floating bed planting of vegetables can greatly reduce the amount of pesticide residues, and the residual amount of vegetables after a short-term treatment is lower than the dietary ADI value; although there are reports on the degradation of pollutants in the floating bed planting of vegetables, combined with the actual aquaculture, the application of floating bed planting There are few studies on the degradation of methomyl by commercial vegetables. In this paper, we will use the laboratory culture system to simulate the methomyl-contaminated tilapia ponds, and study the symbiosis of methomyl and methomyl under the influence of different methomyl concentrations. Changes in the water quality indicators of the system, changes in the liver enzyme activity of Gifu tilapia, and the absorption effect of methomyl in the culture system by chrysalis (methomyl concentration changes in the water body and methomyl content in different parts of yam vegetables), in order to reduce To provide basic data for the research on the harm of methomyl to gifu tilapia culture. Therefore, a floating bed plant for degrading methomyl in water is proposed