Free nitrous acid pre-treatment enhances anaerobic digestion of waste activated sludge and rheological properties of digested sludge: A pilot-scale study

Jia Meng, Haoran Duan, Huijuan Li, Shane Watts, Peng Liu, Sohan Shrestha, Min Zheng, Wenbo Yu, Zhongwei Chen, Yarong Song, Jason Dwyer, Shihu Hu, Zhiguo Yuan