Treatment try of simulated agricultural surface runoff pollution by using a novel biomass concentrator reactor

Ke Zhang; Jing Qing; Yuanye Chen; Xiaoling Liu; Xiaoying Fu; Bing Jiang; Hongbing Luo; Jinping Yang; Ru Xue; Bruce C Anderson; Mei Li; Xiaoting Li; Wei Chen; Liangqian Fan; Xiaohong Zhang

doi:10.1016/j.jenvman.2021.114272

Treatment try of simulated agricultural surface runoff pollution by using a novel biomass concentrator reactor

J Environ Manage. 2022 Feb 15:304:114272. doi: 10.1016/j.jenvman.2021.114272. Epub 2021 Dec 13.

Authors

Ke Zhang¹, Jing Qing², Yuanye Chen³, Xiaoling Liu⁴, Xiaoying Fu⁵, Bing Jiang⁶, Hongbing Luo⁷, Jinping Yang², Ru Xue³, Bruce C Anderson⁸, Mei Li⁹, Xiaoting Li¹⁰, Wei Chen¹, Liangqian Fan¹, Xiaohong Zhang³

Affiliations

¹ College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, Chengdu, 611830, China; Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan Agricultural University, Dujiangyan, Chengdu, 611830, China.
² College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, Chengdu, 611830, China.
³ College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China.
⁴ Department of Information Engineering, Sichuan Water Conservancy Vocational College, Yangma Town, Chengdu, 611231, China.
⁵ State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, 610065, China.
⁶ Business and Tourism School, Sichuan Agricultural University, Chengdu, 611830, China.
⁷ College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, Chengdu, 611830, China; College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China; Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan Agricultural University, Dujiangyan, Chengdu, 611830, China. Electronic address: hbluo@sicau.edu.cn.
⁸ Department of Civil Engineering, Queen's University, Kingston, ON, K7L 3N6, Canada.
⁹ School of Urban and Rural Construction, Chengdu University, Chengdu, 610106, China.
¹⁰ Laboratory Center, College of Chemical and Material Science, Sichuan Normal University, Chengdu, 610066, China.

PMID: 34915388
DOI: 10.1016/j.jenvman.2021.114272

Abstract

Increased agricultural surface runoff in rural watersheds is a leading cause of nonpoint source pollution. In this study, a new biomass concentrator reactor (BCR) is conducted to degrade simulated agricultural surface runoff for both start-up process and treatment process. The results show that both in the start-up phase and in the stable phase, BCR had a good degradation effect on simulated agricultural surface runoff. Within 13 days-15 days of completed start-up of BCR, degradation of COD can be considered to the first-order kinetics: lnC_t=lnC₀-0.1377t (R² = 0.78). During the stabilization phase, the average removal rate of COD, NH₄⁺-N, NO₃^--N, TN and TP from the effluents through the BCR membrane was 94.58%, 85.79%, 53.58%, 37.87%, and 60.62%, respectively, which was increased by 7.4%, 2.5%, 5.1%, 0.18% and 11.4%, respectively, compared to control experiment which the effluents without membrane. The pollutants degradation by BCR in stable phase show a partly relative model of Lawrence-McCarty equation, which the nitrogen and phosphorus degradation is v_N=(4.1+S)/(2.53×S) (R² = 0.69) and v_P=(8.78+S)/(3.0×S) (R² = 0.67), respectively. In the stable phase, the operation cost of BCR is about $0.08/(L•d). Future research on improved BCR maybe focus on the membrane pollution and cleaning, optimized operation conditions, new materials of membrane.

Keywords: Biomass concentrator reactor (BCR); Denitrification; Phosphate removal; Simulated agricultural surface runoff pollution; Start up.

MeSH terms

Biomass
Environmental Monitoring
Nitrogen / analysis
Phosphorus / analysis
Water Movements*
Water Pollutants, Chemical* / analysis
Water Pollution

Substances

Water Pollutants, Chemical
Phosphorus
Nitrogen