Advanced treatment of effluent from municipal wastewater treatment plant by strengthened ecological floating bed. (August 2020)

• Record Type: Journal Article
• Authors: Huang, Zijin; Kong, Fanlong; Li, Yue; Xu, Guangming; Yuan, Ruoyu; Wang, Sen
• Is Part Of: Bioresource technology. Volume 309(2020)
• Publication Date: 2020-08
• Subjects: Carbon source -- Biochar -- Ecological floating bed -- Advanced treatment -- Microbial community; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2020.123358
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Strengthened EFB was used for advanced treatment of effluent from WWTP. Reed carbon source significantly promoted nitrogen removal. Reed biochar substrate contributed to phosphorus removal by adsorption. Carbon source and biochar changed microbial community structure and diversity. Abstract: The performance of eological floating bed (EFB) with novel carbon source (CS) and reed biochar substrate (RBS) derived from reed straw (RS) was evaluated for the advanced treatment of effluent from wastewater treatment plants (WWTPs). The average carbon releasing capacity of CS was 4.50 mg/g, and the P adsorption capacity of RBS was 0.39 mg/g. The additional CS and RBS increased the average removal efficiencies of total nitrogen (TN) and total phosphorus (TP) by 57.6% and 46.7%, respectively. Furthermore, the high-throughput sequencing results revealed significantly different microbial species richness and diversity due to the CS and RBS. Some genera related to nitrogen removal, such as Pseudomonas, Rhodobacter, Hydrogenophaga, Bradyrhizobium, Acinetobacter and Thiobacillus, were enriched in the EFB with CS and RBS. This study provided a suitable method for effectively treating low C/N wastewater such as WWTPs effluent using EFB strengthened by processed wetland plant.