Application of fine bubbles technology in wastewater treatment plant (WWTP) for aquaculture system

Joni, I Made; Subhan, Ujang; Hanam, Eko Sulistio; Azhary, Sundoro Yoga; Pratopo, Lukito Hasta; Hermawan, Wawan; Miranti, Mia; Panatarani, Camellia

doi:10.1063/5.0003078

Cited by 1 publication

(1 citation statement)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Srithongouthai et al [13] reported that use of a system that generates microscopic bubbles (5-40 µm in diameter) allows DO levels in the net pens of fish farms to recover during the night from ~5 mg L −1 to saturation levels (>6 mg L −1 ). Joni et al [17] also reported that the application of MiBs in an aquaculture system increased the DO from 4.5 mg L −1 to 7.9 mg L −1 . In addition to their use in aquaculture facilities, MiBs have been used to improve the water quality of wastewater contaminated with various hazardous materials, such as azo dye [18], methylene blue [19], phenol [6,20], palm oil [8], diesel oil [21], trichloroethylene [22], surfactants [3], pesticides [23], and pathogenic bacteria [24].…”

Section: Introductionmentioning

confidence: 97%

Effective Purification of Eutrophic Wastewater from the Beverage Industry by Microbubbles

Fukami

Oogi

Motomura

et al. 2021

Water

View full text Add to dashboard Cite

Beverage industries often discharge large amounts of organic matter with their wastewater. Purification of the effluent is their obligation, but it is nontrivial. Among wastewater components, removal of dissolved organic matter often requires much effort. Therefore, a special effective technique must be considered. Microbubbles (1–100 μm) have several special properties of relevance to wastewater treatment. In this study, the effectiveness of microbubbles for treating and purifying beverage wastewater was evaluated. Orange juice, lactic acid drink, and milk were used as model substrates of dissolved organic matter, and degradation experiments were carried out. Rates of air supply by microbubbles were 0.05% (air/wastewater) min−1. Results indicated that the total organic carbon (TOC) in an experimental vessel containing milk (high nitrogen content) decreased by 93.1% from 11.0 to 0.76 g during a 10-day incubation. The TOC of lactic acid drink (least nitrogen content) decreased by 66.3%, from 15.6 to 5.26 g, and the TOC of orange juice (medium nitrogen content) decreased by 82.7%, from 14.8 to 2.55 g. Large amounts of particulate organic matter floated on the water surface in the milk with microbubbles and were removed easily, while almost no floating materials were observed in the orange juice and lactic acid drink. In contrast, in the macrobubble treatment (diameter 0.1 to 2 mm), only 37.0% of TOC in the milk was removed. Whereas the macrobubble treatments were anaerobic throughout the incubations, the microbubble treatments returned to aerobic conditions quickly, and brought 10 times greater bacterial abundances (>108 cells mL−1). These results suggest that microbubbles are much superior to macrobubbles in supplying oxygen and accelerating the growth of aerobic bacteria, and that wastewater containing more nitrogenous compounds was purified more effectively than that with less nitrogen by microbial degradation and floating separation.

show abstract