TY  - JOUR
AV  - none
TI  - Evaluation of wastewater treatment performance to a field-scale constructed wetland system at clogged condition: A case study of ammonia manufacturing plant
ID  - scholars15095
KW  - Ammonia; Deterioration; Effluent treatment; Effluents; Manufacture; Sewage treatment plants; Wastewater treatment; Wetlands
KW  -  Ammoniacal nitrogen; Ammoniacal nitrogen removal; Coefficient of determination; Constructed wetlands; Inlet concentration; Manufacturing plant; Outlet concentration; Treatment performance
KW  -  Nitrogen removal
KW  -  ammonia; nitrogen
KW  -  ammonia; chemical oxygen demand; constructed wetland; manufacturing; performance assessment; subsurface flow; wastewater treatment
KW  -  Article; chemical industry; chemical oxygen demand; constructed wetland; effluent; Malaysia; monitoring; pH; priority journal; waste component removal; waste water management
KW  -  Malaysia
N2  - Assessment of the treatment performance in the field-scale hybrid constructed wetland (CW) for ammonia manufacturing plant remains limited. After being in operations running on and off since 2014, the hybrid CW which treats effluent from the ammonia manufacturing plant in Peninsular, Malaysia has recently demonstrated the full clogging to the CW. It takes only 8 months to demonstrate a big deterioration of performance in 2019. Though the mechanism of clogging is not clear, which can be partially from inherent design problems or operational issues, nonetheless, it is important to evaluate how this clogging has impacted the effluent treatment performance and the continuous utilization of the CW. The purpose of this study is to evaluate the impact of the treatment performance on the ammoniacal nitrogen and COD removal when the CW is clogged. The result revealed that there is no impact on COD removal, but it has a substantial impact on the ammoniacal nitrogen removal. The ammoniacal nitrogen removal dropped to negative (outlet concentration is higher than inlet concentration) during the clogged period. Another observation is, the low removal rate also coincides with a high COD/N ratio, when the COD/N ratio increased to >2, the ammoniacal nitrogen removal rate dropped substantially, with the coefficient of determination, R2 of 40.5. The root cause for the clogging to develop in a short period of time is unidentified. However, it is still worth noting that COD and ammoniacal nitrogen efficiency did not behave the same at the clogged CW. © 2020 Elsevier B.V.
N1  - cited By 7
PB  - Elsevier B.V.
SN  - 00489697
Y1  - 2021///
VL  - 759
JF  - Science of the Total Environment
A1  - Keng, T.S.
A1  - Samsudin, M.F.R.
A1  - Sufian, S.
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85097093897&doi=10.1016%2fj.scitotenv.2020.143489&partnerID=40&md5=a99bf7dd1f1254cc9d1b1aba40b20aa9
ER  -