[1]郭亚琼,隋克俭,李鹏峰,等.新型悬浮介质层深度除磷工艺的效能与机理分析[J].中国给水排水,2023,39(11):90-94.
　GUOYa-qiong,SUIKe-jian,LIPeng-feng,et al.Performance and Mechanism of Novel Suspended Medium Layer Process for Advanced Phosphorus Removal[J].China Water & Wastewater,2023,39(11):90-94.
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新型悬浮介质层深度除磷工艺的效能与机理分析

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第39卷 期数: 2023年第11期 页码: 90-94 栏目: 出版日期: 2023-06-01
Title:
Performance and Mechanism of Novel Suspended Medium Layer Process for Advanced Phosphorus Removal
作者:
郭亚琼， 隋克俭， 李鹏峰， 孙永利， 郑兴灿， 王雅雄
（中国市政工程华北设计研究总院有限公司，天津 300074）
Author(s):
GUO　Ya-qiong， SUI　Ke-jian， LI　Peng-feng， SUN　Yong-li， ZHENG　Xing-can， WANG　Ya-xiong
（North China Municipal Engineering Design＆Research Institute Co. Ltd.， Tianjin 300074，China）
关键词:
悬浮介质层;  深度除磷;  污水;  启动;  机理
Keywords:
suspended medium layer;  advanced phosphorus removal;  sewage;  start-up;  mechanism
摘要:
开发了新型悬浮介质层深度除磷工艺，在不投加助凝剂PAM的情况下，实现对二级出水中TP和SS的深度去除，提高了出水生态安全性，促进了污水资源化利用。以生活污水二级生物处理出水为研究对象，考察了系统的启动方式和运行效果，并对悬浮介质层深度除磷机理进行探讨。结果表明：在表面负荷为0.8 m3/（m2·h）、PAC投加量为270 mg/L的条件下，悬浮介质层深度除磷系统可在4 h成功启动；降低PAC投加量为27 mg/L，稳定运行后悬浮介质层单元出水PO43--P<0.2 mg/L，砂滤单元出水TP<0.2 mg/L、SS<2 mg/L；新型悬浮介质层除磷系统依靠悬浮固体对过量药剂进行吸附截留，并通过减少排泥实现对金属盐的保留，形成高金属盐浓度反应区完成对低浓度磷酸盐的高效去除，提高了除磷药剂的利用效率。
Abstract:
A novel advanced phosphorus removal process packed with suspended medium layer was developed, which achieved advanced removal of TP and SS in effluent from the secondary biological treatment without adding coagulant PAM, improved the ecological safety of effluent and promoted the utilization of sewage resources. The start-up mode and operational performance of the system were investigated, and the advanced removal mechanism of phosphorus in effluent from the secondary biological treatment in the suspended medium layer was discussed. When the surface loading rate was 0.8 m3/(m2·h) and PAC dosage was 270 mg/L, the advanced phosphorous removal system was successfully started in 4 hours. When the PAC dosage was reduced to 27 mg/L for stable operation, the PO43--P in effluent from the suspended medium layer unit was less than 0.2 mg/L, and the TP and SS in effluent from the sand filter was less than 0.2 mg/L and 2 mg/L, respectively. The novel advanced phosphorus removal system adsorbed and retained excess chemicals aided by the suspended solids, and achieved the retention of metal salts by reducing the sludge discharge, so as to form a reaction zone with high metal salt concentration to complete the efficient removal of low concentration phosphate, and improve the utilization efficiency of phosphorus removal agents.
更新日期/Last Update: 2023-06-01