Nutrient recovery from foam with microwave treatment. Issue 3 (10th November 2015)

• Record Type: Journal Article
• Authors: More, Abhilasha; Srinivasan, Asha; Liao, Ping Huang; Koch, Fred; Mavinic, Donald S.; Lo, Kwang Victor
• Is Part Of: Journal of environmental engineering and science. Volume 10:Issue 3(2015)
• Page Start: 53
• Page End: 61
• Publication Date: 2015-11-10
• Subjects: environment -- sewage treatment & disposal -- thermal effects; Environmental engineering -- Periodicals; Sanitary engineering -- Periodicals; Environmental engineering -- Canada -- Periodicals; Environnement, Technique de l' -- Périodiques; Technique sanitaire -- Périodiques; Environnement, Technique de l' -- Canada -- Périodiques; Environmental engineering; Sanitary engineering; Canada; Electronic journals; Computer network resources; Periodicals; 628.05
• DOI: 10.1680/jenes.15.00005
• Languages: English
• ISSNs: 1496-2551

Abstract

Abstract : Phosphorus recovery and solids reduction potential from foam generated in the anoxic reactor of membrane-enhanced biological phosphorus removal system were studied using the microwave-enhanced advanced oxidation process (MW/H2 O2 -AOP). The MW/H2 O2 -AOP-treated foam at different experimental conditions showed significant improvement in solubilisation of orthophosphate, ammonia, volatile fatty acids and soluble chemical oxygen demand as well as settling and dewatering ability. The most significant factors maximising orthophosphate release in the order of most to least affecting were ( i ) microwave heating temperature, ( ii ) combined effect of microwave heating temperature and hydrogen peroxide addition and ( iii ) addition of sulfuric acid. At temperature 180°C, pH 3 and hydrogen peroxide dosage 0·5% v/v, nutrient solubilisation, settling, and dewatering properties were at their maximum with 67% of the total phosphate solubilised as orthophosphate.