A comparison on phosphorus release and struvite recovery from waste activated sludge by different treatment methods

Liu, Xiaolei1; Li, Anjie1; Ma, Lisha1; Jing, Zaitao2; Yang, Jing2; Tang, Yi3; Hu, Bin3

2020

10.1016/j.ibiod.2019.104878

INTERNATIONAL BIODETERIORATION & BIODEGRADATION   影响因子和分区

0964-8305

1879-0208

Enhancing phosphorus (P) recovery from P-rich waste activated sludge is economically effective for sustainable development and long-term food security. It is the first step for struvite recovery to find a new way to release phosphorus fully from the waste activated sludge. In this study, food-processing wastewater was found to contribute to phosphorus-rich activated sludge, which was suitable for the recovery of phosphorus in comparison with sewage sludge. In addition, six sludge treatment methods were examined resulting in significant differences on the release and recovery performance of phosphorus and nitrogen. Enzymatic hydrolysis (EH) pre-treatment showed better phosphorus release while thermal hydrolysis (TH) pre-treatment was beneficial for nitrogen release. Anaerobic fermentation (AF) after sludge pre-treatment significantly increased the accumulation of ammonia nitrogen (around 34% of sludge total nitrogen, TN) and orthophosphate (around 68% of sludge total phosphorus, TP) in the hydrolysate for struvite recovery. The highest P recovery rate was obtained using a combined EH-AF (67.98% of sludge TP). Although non-pretreated AF and free nitrous acid hydrolysis (FNAH)-AF could also achieve comparable release of phosphorus and nitrogen, the purity of struvite obtained by EH, TH, EH-AF and TH-AF was better than the former. This study provides important information on the effects of different sludge treatment methods to the release of nitrogen and phosphorus to guide the application.
© 2019 Elsevier Ltd

Struvite recovery Waste activated sludge Thermal hydrolysis Enzymatic hydrolysis Free nitrous acid hydrolysis

EI ; SCI

英语

其他

National Natural Science Foundation of China[51478042] ; National Natural Science Foundation of China[51778056]

Biotechnology & Applied Microbiology ; Environmental Sciences & Ecology

Biotechnology & Applied Microbiology ; Environmental Sciences

WOS:000517854700006

Elsevier Ltd

20195107870920

Ammonia ; Enzymatic hydrolysis ; Food processing ; Food supply ; Inorganic acids ; Phosphorus ; Recovery ; Sewage sludge

Sewage Treatment:452.2 ; Industrial Wastes Treatment and Disposal:452.4 ; Chemical Products Generally:804 ; Food Processing Operations:822.2 ; Food Products:822.3

ENVIRONMENT/ECOLOGY

EV Compendex

1.Key Laboratory of Water and Sediment Sciences of Ministry of Education / State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing; 100875, China
2.Wastewater Treatment Plant of Xiwang Group, Bingzhou; 256600, China
3.South University of Science and Technology of China Engineering Innovation Center (Beijing), Beijing; 100083, China

Liu, Xiaolei,Li, Anjie,Ma, Lisha,et al. A comparison on phosphorus release and struvite recovery from waste activated sludge by different treatment methods[J]. INTERNATIONAL BIODETERIORATION & BIODEGRADATION,2020,148.

Liu, Xiaolei.,Li, Anjie.,Ma, Lisha.,Jing, Zaitao.,Yang, Jing.,...&Hu, Bin.(2020).A comparison on phosphorus release and struvite recovery from waste activated sludge by different treatment methods.INTERNATIONAL BIODETERIORATION & BIODEGRADATION,148.

Liu, Xiaolei,et al."A comparison on phosphorus release and struvite recovery from waste activated sludge by different treatment methods".INTERNATIONAL BIODETERIORATION & BIODEGRADATION 148(2020).