Research of oily wastewater treatment by micro-bubble flotation experimental device

Lu, Yang; Zhang, Fan; Zhang, Yuyao; Hu, Kai; Wang, Shengjie

doi:10.1049/cp.2016.1384

Cited by 1 publication

(1 citation statement)

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“…The traditional air flotation process mainly relies on the generation of a large number of micro-bubbles in water (the diameter of the bubbles is mostly above 100 μm) to let the algae float on the water surface for removal. The removal effect depends on the number of microbubbles and the size of the bubbles generated in the pool, and the smaller the bubbles, the more the bubbles and the stronger the buoyancy (Liu et al, 2014;Lu et al, 2016). In addition to electrochemical oxidation, the electrolysis process also produces a huge amount of 40-μm micro-bubbles; the effect of electrical flotation treatment is significantly higher than the traditional air flotation process (Min et al, 2005).…”

Section: Devicementioning

confidence: 99%

Algal removal from raw water by electro-flotation

Jiang

Wang²,

Li³

et al. 2023

Front. Environ. Sci.

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In order to reduce the influence of algae on the conventional treatment process of the water plant, the electro-flotation process was used to test the raw water of a lake-type reservoir. After raw water with cyanobacteria as the dominant algae is treated by the best electro-flotation process, the average removal rate of algal density can reach 99.1%. The effects of current density, residence time, and electrode spacing on the algal removal efficiency of the electro-floating process were investigated by orthogonal experiments. The order of influence was current density > residence time > electrode spacing. Considering economics, the optimal process conditions were as follows: the current density was 5 mA/cm2, the dwell time was 6 min, and electrode spacing was 10 mm.

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Section: Devicementioning

confidence: 99%