Publication: Effect of leachate effluent water reuse on the phytotoxicity and micropollutants accumulation in agricultural crops
2
0
Issued Date
2021
Resource Type
Language
eng
File Type
application/pdf
ISSN
22133437
Other identifier(s)
2-s2.0-85118508889
Rights Holder(s)
มหาวิทยาลัยศรีนครินทรวิโรฒ
Bibliographic Citation
Journal of Environmental Chemical Engineering. Vol 9, No.6 (2021)
Suggested Citation
Boonnorat J., Treesubsuntorn C., Phattarapattamawong S., Cherdchoosilapa N., Seemuang-On S., Somjit M., Huadprom C., Rojviroon T., Jutakanoke R., Prachanurak P. Effect of leachate effluent water reuse on the phytotoxicity and micropollutants accumulation in agricultural crops. Journal of Environmental Chemical Engineering. Vol 9, No.6 (2021). doi:10.1016/j.jece.2021.106639 Retrieved from: https://hdl.handle.net/20.500.14740/7803
Abstract
This research comparatively investigated the effects of effluents from three biological wastewater treatment systems on the phytotoxicity, seed germination, and accumulation of micropollutants and heavy metals in plants irrigated with the effluents under study. The three biological wastewater treatment systems were two-stage activated sludge (AS), two-stage moving bed bioreactor (MBBR), and two-stage moving bed bioreactor with microfiltration (MBBR/MF). The systems were operated in parallel with identical landfill leachate concentrations under different hydraulic retention time (HRT) (24, 18, and 12 h). The phytotoxicity experiments were carried out with golden pothos (Epipremnum aureum) planted in soil irrigated with AS, MBBR, and MBBR/MF effluent and those raised in the effluent (without soil). The malondialdehyde (MDA) concentrations in the plants were used to determine the plant stress. To evaluate the effect of water reuse to agricultural crops, this research measured the seed germination rates of lettuce (Lactuca sativa) irrigated with AS, MBBR, and MBBR/MF effluent and the accumulation of micropollutants and heavy metals. The results showed that under 24 h HRT, the AS, MBBR, and MBBR/MF systems could achieve high treatment efficiency of organics and nutrients and micropollutant degradation (73.4 – 100%). With shorter HRT (18 and 12 h), the treatment efficiency and micropollutant degradation of MBBR and MBBR/MF remained relatively unchanged (68.7 – 100%), unlike in the AS system. The MBBR/MF effluent exhibited the comparatively lowest MDA concentrations. Furthermore, the MBBR/MF effluent minimally affected the growth of lettuce, as evidenced by highest seed germination rates. No micropollutants and heavy metals were present in lettuce irrigated with MBBR/MF effluent. However, traces of bisphenol A and di-(ethylhexyl)-phthalate were detected in lettuce watered with AS and MBBR effluents. As a result, the MBBR/MF system is operationally and environmentally ideal for treating landfill leachate for high-quality effluent which can be reused to irrigate crop and replenish surface water. © 2021 Elsevier Ltd
Subject(s)
Bioconversion
Biological water treatment
Bioreactors
Climate change
Crops
Cultivation
Efficiency
Heavy metals
Leachate treatment
Microfiltration
Plants (botany)
Seed
Vegetables
Wastewater reclamation
Wastewater treatment
Water conservation
Activated sludge
Food security
Food-safety
Hydraulic retention
Micropollutants
Moving bed
Moving bed bioreactor/MF
Retention time
Safety and securities
Seed germination
Effluents
Biological water treatment
Bioreactors
Climate change
Crops
Cultivation
Efficiency
Heavy metals
Leachate treatment
Microfiltration
Plants (botany)
Seed
Vegetables
Wastewater reclamation
Wastewater treatment
Water conservation
Activated sludge
Food security
Food-safety
Hydraulic retention
Micropollutants
Moving bed
Moving bed bioreactor/MF
Retention time
Safety and securities
Seed germination
Effluents