[1]丁鑫,李祥,毕贞,等.厌氧/好氧交替生物膜工艺利用原水中碳源回收磷[J].中国给水排水,2023,39(5):1-8.
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厌氧/好氧交替生物膜工艺利用原水中碳源回收磷

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第39卷 期数: 2023年第5期 页码: 1-8 栏目: 出版日期: 2023-03-01
Title:
Recovery of Phosphorus by Anaerobic/Aerobic Alternative Biofilm Process Using Organic Carbon from Raw Wastewater
作者:
丁鑫1,2， 李祥1,2， 毕贞1,2， 黄勇1,2， 刘缘1,2
（1.苏州科技大学 环境科学与工程学院，江苏 苏州 215009；2.苏州科技大学 环境生物技术研究所，江苏 苏州 215009）
Author(s):
DING　Xin1，2， LI　Xiang1，2， BI　Zhen1，2， HUANG　Yong1，2， LIU　Yuan1，2
（1. School of Environmental Science and Engineering， Suzhou University of Science and Technology， Suzhou 215009， China； 2. Environment Biotechnology Research Institute， Suzhou University of Science and Technology， Suzhou 215009， China）
关键词:
城市污水;  生物膜;  厌氧/好氧交替;  磷回收;  碳源
Keywords:
municipal wastewater;  biofilm;  anaerobic/aerobic alternation;  phosphorus recovery;  carbon source
摘要:
厌氧段外加碳源刺激释磷一直是生物膜磷回收系统的必要措施，而我国城市污水中普遍含有200～300 mg/L的COD，充分利用城市污水中的碳源同时能提高磷回收效果的新工艺和新模式研发仍尤为重要。构建了“先厌氧再好氧”的循环运行模式，在悬浮填料生物膜工艺中开展利用原水有机碳源进行磷去除与富集的可行性研究。在生物膜培养过程中，控制有机负荷为0.25 kg/（kgMLSS·d），单周期为48 h，厌氧/好氧交替各4 h，充水比为25%，以悬浮填料为载体的聚磷生物膜可在30 d内形成；利用原水中碳源进行生物膜磷回收是可行的，出水PO43--P可稳定在0.5 mg/L以下，磷回收液浓度稳定在50～60 mg/L之间，最高可达60 mg/L。高通量测序结果显示，在门水平上Proteobacteria占主导地位，丰度由38.5%增至66.4%；在属水平上Candidatus_Competibacter由3.4%增至28.1%，Defluviicoccus由2.6%增至7.5%，功能聚磷菌为Pseudomonas，占比为2.9%。
Abstract:
In the anaerobic stage, addition of carbon source to stimulate phosphorus release has always been a necessary measure for biofilm phosphorus recovery system. However, the carbon source of 200-300 mg/L is generally contained in urban sewage in China, so it is particularly important to develop new processes and models that can make full use of carbon source in sewage and improve phosphorus recovery effect. In this study, anaerobic/aerobic cycle operation mode was carried out, and the feasibility of phosphorus removal and enrichment by using organic carbon source from raw wastewater in suspended carrier biofilm process was investigated. When the organic loading was 0.25 kg/(kgMLSS·d), the single cycle was 48 h, the anaerobic/aerobic alternate was 4 h respectively, and the water-filling ratio was 25% in the process of biofilm cultivation, the phosphorus-accumulating biofilm with suspended filler could be formed within 30 days. It was feasible to recover phosphorus from biofilm by using carbon source in raw water, PO43--P in effluent could be stabilized below 0.5 mg/L, and the concentration of phosphorus recovery solution was stabilized between 50 mg/L and 60 mg/L, with the highest value reaching 60 mg/L. High-throughput sequencing indicated that Proteobacteria at the phylum level was dominant, and the abundance increased from 38.5% to 66.4%; at the genus level, Candidatus_Competibacter increased from 3.4% to 28.1%, Defluviicoccus increased from 2.6% to 7.5%, and Pseudomonas was the functional phosphorus-accumulating bacterium, accounting for 2.9%.

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更新日期/Last Update: 2023-03-01