Novel Vertical Flow Wetland Filtration Combined with Co-Zeotype Material Based Catalytic Ozonation Process for the Treatment of Municipal Wastewater

Abstract

Municipal wastewater treatment to recycling level is an important means to conserve water resources. Untreated wastewater leads to a reduction in per capita availability of water and an increase in environmental pollution. Therefore, in the current study, a filtration process based on Typha Angustifolia planted vertical flow wetland and Rice husk (VFCW) in combination with catalytic ozonation based on Cobalt loaded zeotype catalyst was used for the first time to treat municipal wastewater. The results at optimized conditions show that about 89%, 93%, and 97% of BOD5, COD, and TKN respectively were removed based on combined VFCW/Co-zeotype/O3 processes. More than 90% elimination of heavy metals including Cr, Cu, Cd, Fe, Ni, and Zn was also observed. Hence, it is concluded that the VFCW/Co-zeotype/O3 process has potential as an alternative to conventional treatment for municipal wastewater treatment.

A Comprehensive Review on Zeolite Chemistry for Catalytic Conversion of Biomass/Waste into Green Fuels

“…Guefrachi et al (2020) elaborated that zeolites’ active centre contains acidic sites. It has been found that acidic site strength decides application specificity, as stated by Xin et al (2019) [ 101 , 102 , 103 ]. Peng et al (2020) stated that potent adsorption ability and higher surface area are possessed by zeolite molecular sieves [ 104 ].…”

Characterization of nano-hydroxyapatite synthesized from eggshells for absorption of heavy metals

“…On the other hand, the dangerous effects of mentioned metals on animals are organ damage, nervous system damage, reduced body growth, sleeplessness, cancer, and even death [4,5]. To solve this environmental problem, various technologies have been employed to remove the heavy metals from wastewater involving membrane separation [6,7], adsorption [8][9][10], chemical oxidation [11], ion exchange [12,13], precipitation [14,15], ozonation [16,17], and photocatalysis [18,19].…”