Simultaneous recovery of ammonium and total phosphorus from toilet tail water by modified palygorskite-bentonite clay.
作者： Shengguang Sun , Guixia Ji , Yicheng Lv , Hongbo Liu , Tao Hu
DOI: 10.1002/WER.1495
关键词:
摘要: Suitable treatment of toilet sewage is a worldwide challenge. The anaerobic baffled reactor (ABR)-microbial fuel cell (MFC)-microbial electrolysis (MEC) (AMM) coupling system has been constructed achieving effective removal carbon, nitrogen, and phosphorus from resource recovery; however, ammonium (NH4 + -N) total (TP) accumulation in tail water found problem the system. In this study, acid-modified alkali-heat modified palygorskite-bentonite (Pal-Ben) were used to recover NH4 -N TP AMM simultaneously. higher adsorption capacity clay attributed changes surface structure material. Pal-Ben (mass ratio 1:3) activated with alkali performed highest recovery rates 83.6% 85.5%, respectively. was more line pseudo-second-order kinetic model confirmed be chemical process, while pseudo-first-order kinetics physical process; accelerated decrease when pH increased. This study developed low cost high alkaline thermally removing/recovering PRACTITIONER POINTS: A cheap composite nitrogen costs make it stand out water. process mechanism simultaneous clarified characterization fitting. loaded nutrients could applied as slow-release compound fertilizer for soil improvement.
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