Microalgae culture and wastewater domestication integrated photobioreactor and use method thereof

Abstract

The invention discloses a microalgae culture and wastewater domestication integrated photobioreactor and a use method thereof, and relates to a photobioreactor using rare earth tailing wastewater and a use method thereof. The method aims at solving the technical problems that an existing method for treating the rare earth tailing wastewater is high in economic cost and common in effect, and recycling is achieved. The photobioreactor comprises three main reactors with different heights, and every two main reactors are connected through a communicating pipe; the upper-layer algae liquid can flow to the lower layer through gravity flow, so that the conversion of a culture medium is realized, and the domestication effect is achieved; an outer-ring water bath is heated through a heating pipe, and economical, energy-saving, uniform in heating and accurate in temperature control; a microporous aeration ring is arranged at the bottom, so that the algae liquid can be uniformly mixed while a carbon source is supplemented; and a lamp tube is sufficient and uniform in illumination. According to the method, a large amount of domesticated algae liquid can be provided in places with large-scale algae demand and without culture conditions.

Description

technical field [0001] The invention relates to an integrated reactor for microalgae cultivation and wastewater acclimatization and a use method thereof. Background technique [0002] Rare earth elements are known as industrial "vitamins" and have a wide range of uses. The global rare earth mines are mainly distributed in China, especially in Jiangxi. However, a large amount of rare earth mining has also brought serious environmental pollution. Rare earth tailings wastewater with high ammonia nitrogen and nitrate nitrogen, low organic matter, acidity, high sulfate, low concentration of heavy metals and rare earth elements has caused a certain degree of damage to the surrounding environment. According to the survey, only in Ganzhou, Jiangxi Province, China, the average flow rate of wastewater generated by a single rare earth mine is as high as 4000m 3 / d~10000m 3 / d, the number of tailings can reach 200. Therefore, it has become an urgent need to choose an effective and ...

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Problems solved by technology

[0005] The present invention aims to solve the problem that the existing method for treating rare earth tailings wastewater has high economic cost and general effect, the amount of algae produced in the microbial culture room cannot meet the demand for engineering-grade microalgae, and the culture conditions are not accurate, thus prolonging the culture period of microalgae , Harvesting microalgae takes time and money, algae cannot be put into use immediately, the cost is expensive and the use of many technical problems is inconvenient, and a photobioreactor integrating microalgae cultivation and wastewater domestication and its use method are provided

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