Related Experiment Video
Updated: May 17, 2026

A Novel Bioreactor for High Density Cultivation of Diverse Microbial Communities
Published on: December 25, 2015
Partial nitrifying granule stimulated by struvite carrier in treating pharmaceutical wastewater
Guowen Wang1, Dong Wang, Xiaochen Xu
1Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China) School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian, 116024, China.
Abstract:
Aerobic granule was successfully cultivated in SBR (sequencing batch reactor) by struvite carrier (magnesium ammonium phosphate, MgNH4PO4), which can increase polysaccharides to 42.2 mg/gMLVSS (mixed liquor volatile suspended solid) versus only 28.4 mg/gMLVSS of the sludge without it. Meanwhile, it was found that struvite play a positive role in initial granulation and bacterial group distribution in treating pharmaceutical wastewater, involving effect of solid surface and special contents of struvite. The results of fluorescence in situ hybridization technique indicate that ammonia-oxidizing bacteria can dominate over nitrite-oxidizing bacteria in mature granules. COD removal efficiency of 90 % and NO2 (-)-N:(NO2 (-)-N + NO3 (-)-N) accumulation efficiency of 89 % were achieved in stable state. Emphasis is placed on that struvite addition can be applied as a new-type carrier to promote formation of partial nitrification granular sludge.
Related Concept Videos
Microbial Bioremediation of Uranium
Modified-Release Drug Delivery Systems: Stimuli-Activated
Urinary Tract Calculi III: Medical Management
Drug Elimination by Renal Route: Tubular Secretion
Production of Antibiotics
Inorganic Nitrogen Assimilation

