Device and method for treating organic waste water by combining microorganism electrolytic tank and lemna minor cultivation

Abstract

The invention relates to a waste water treatment technology and specifically relates to a device and method for treating organic waste water by combining a microorganism electrolytic tank and lemna minor cultivation. The device comprises a microorganism electrolytic tank, a photobioreactor and a master controller, wherein a secondary light source, an illumination intensity detector and a nitrogen phosphorus concentration detector are arranged on the photobioreactor, and the lemna minor is cultivated in the photobioreactor. The defects that the microorganism electrolytic tank and the lemna minor are respectively used for treating the organic waste water can be overcome simultaneously, the treatment effect of the sewage is improved, and the obtained biofuel methane and biomass can be used for compensating the sewage treatment cost, a new path for efficiently treating the organic sewage is provided, and the method and the device have important significance on energy conservation and emission reduction and environmental management. And furthermore, the device is capable of overcoming the influence of the overcast and rainy weather and haze weather on the treatment efficiency, and the sewage treatment automatic control under different weather conditions can be realized.

Description

technical field [0001] The invention relates to a waste water treatment technology. Specifically, the present invention relates to a device and method for recycling organic wastewater by combining microbial electrolysis cells with duckweed cultivation, which can be widely used in the treatment of organic wastewater, and can obtain biofuel and biofuel while improving the wastewater treatment effect. substances, and can reduce the cost of wastewater treatment. Background technique [0002] A large amount of organic wastewater is produced every year in the world. The traditional wastewater biological treatment process not only consumes a lot of energy, but also produces a large amount of sludge, and the cost of sludge treatment is also high. Therefore, there is a need to develop alternative technologies that are more efficient and less costly. At the same time, energy shortage is also a major bottleneck restricting human development in the 21st century. Therefore, it is impe...

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Problems solved by technology

[0005] In order to solve the limitations of traditional wastewater aerobic biological treatment, microalgae-type microbial fuel cell treatment of organic wastewater system and duckweed alone treatment of organic wastewater, the present invention provides a combination of microbial electrolysis pool and duckweed culture for resource treatment The method and device for organic wastewater can obtain biofuel methane and biomass while treating organic wastewater, and the obtained biomass can be used as raw materials for bioenergy production

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