School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China.
School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China.
Bioresour Technol. 2024 Feb;394:130215. doi: 10.1016/j.biortech.2023.130215. Epub 2023 Dec 19.
The treatment of reverse osmosis concentrate generated from urban industrial sewage for resource recovery has been hot. In this research, a biofilm reactor was constructed by combining sycamore deciduous biochar, shell powder, and polyurethane sponge loaded with Zobellella denitrificans sp. LX16. For ammonia nitrogen (NH-N), calcium (Ca), chemical oxygen demand (COD), cadmium (Cd), and tetracycline (TC), the removal efficiencies were 98.69 %, 83.95 %, 97.26 %, 98.34 %, and 69.12 % at a hydraulic retention time (HRT) of 4 h, pH of 7.0, and influent salinity, Ca, and TC concentrations of 1.0, 180.0, and 3.0 mg/L, respectively. The biofilm reactor packing has a three-dimensional structure to ensure good loading of microorganisms while promoting electron transfer and metabolic activity of microorganisms and increasing the pollutant tolerance and removal efficiency. The reactor provides a practical reference for the sedimentation of reverse osmosis concentrate to remove Cd and TC by microbial induced calcium precipitation (MICP).
从城市工业污水中回收反渗透浓缩液的处理一直备受关注。在这项研究中，通过将枫杨落叶生物炭、贝壳粉和负载 Zobellella denitrificans sp. LX16 的聚氨酯海绵组合，构建了一个生物膜反应器。在水力停留时间为 4 小时、pH 值为 7.0 以及进水盐度、Ca 和 TC 浓度分别为 1.0、180.0 和 3.0 mg/L 的条件下，对氨氮（NH-N）、钙（Ca）、化学需氧量（COD）、镉（Cd）和四环素（TC）的去除效率分别达到 98.69%、83.95%、97.26%、98.34%和 69.12%。生物膜反应器的填充具有三维结构，可确保微生物的良好负载，同时促进微生物的电子转移和代谢活性，提高污染物的耐受性和去除效率。该反应器为反渗透浓缩液通过微生物诱导碳酸钙沉淀（MICP）去除 Cd 和 TC 提供了实用参考。
