Method for degrading red tide/water bloom algae by driving electro-Fenton in situ based on sedimentary microbial fuel cell of water body bottom mud

Abstract

The invention discloses a method for degrading red tide / water bloom algae by in-situ driving electro-Fenton through a sedimentary microbial fuel cell based on water body bottom mud, and belongs to the technical field of water body pollution treatment. The method comprises the following steps: introducing a carbon felt electrode as an anode into bottom mud of a water body, oxidizing organic matter resources contained in the bottom mud to generate electrons by virtue of an extracellular electron transfer mechanism by virtue of electricigens under a natural anaerobic environment condition, transferring the electrons to a gamma-FeOOH-loaded cathode fixed on the upper surface of the liquid surface of a cathode region through the anode, dissolving ferric iron in water to promote the reaction of dissolved oxygen and ferric iron to generate Fenton reagents H2O2 and Fe<2+>, and decomposing hydrogen peroxide under the catalytic action of ferrous ions to generate hydroxyl free radicals with strong oxidizing property; wherein energy and hydrogen peroxide are not required to be added in the process, and the purpose of removing red tide / water bloom algae in situ can be achieved. Meanwhile, the effect of reducing organic matters in the water body bottom mud can be realized by utilizing anodic reaction.

Description

technical field

[0001] The invention relates to a method for in-situ driving electric Fenton to degrade red tide / bloom algae by a sedimentary microbial fuel cell based on water body sediment, belonging to the technical field of water body pollution control. Background technique

[0002] With global warming, red tide / bloom algae are distributed and grown in a suitable warm water environment. At the same time, with the growth of world population and the acceleration of urbanization, a large amount of sewage discharged by humans enters water bodies, resulting in frequent red tide / bloom phenomena. It has caused the ecological environment of the water body to lose balance, and has caused serious harm to human health and economic development. In recent years, red tide / algae bloom disasters have occurred frequently in many waters in China and around the world. Therefore, in order to maintain the safety of the ecological environment of water bodies and ensure the healthy developmen...

Images