Wastewater biological treatment device for folic acid production

Abstract

The invention discloses a wastewater biological treatment device for folic acid production, and relates to the technical field of sewage treatment. The system comprises a pretreatment unit, an anaerobic treatment unit, an aerobic treatment unit and a deep treatment unit which are arranged in sequence, the anaerobic treatment unit comprises a tank body, and the tank body is communicated with an exhaust pipe and an air inlet pipe; the air inlet pipe is communicated with the air inlet end of a circulating air pump, the air outlet end of the circulating air pump is communicated with a connecting pipe arranged at the bottom of the tank body through a pipeline, and the air outlet end of the connecting pipe is communicated with an aeration module A arranged at the bottom in the tank body; during use, activated sludge is laid at the bottom of the tank body, and gas in the tank body is controlled to circulate in the tank body through a circulating gas pump during anaerobic treatment. According to the anaerobic treatment unit disclosed by the invention, a circulating air pump is matched with an aeration module A, so that gas circularly flows in a tank body, full contact between activated sludge and wastewater is promoted, and the degradation efficiency of organic matters is remarkably improved.

Images