Ca2+、Mg2+、Fe2+诱导颗粒污泥形成及污水处理效果

闻逸铮; 郑超群; 郑洁; 雷鲜艳; 曹德菊; 孙翔

doi:10.13205/j.hjgc.202208005

Ca²⁺、Mg²⁺、Fe²⁺诱导颗粒污泥形成及污水处理效果

doi: 10.13205/j.hjgc.202208005

1. 安徽农业大学资源与环境学院, 合肥 230036;
2. 安徽省蓝鼎环保能源科技有限公司, 合肥 230036

基金项目:

安徽农业大学创新基金项目(XJDC2019215)

安徽省重点研发项目(1804a07020110)

详细信息

作者简介:
闻逸铮(1996-),女,硕士研究生,主要从事农村生活污水处理研究。854774575@qq.com

通讯作者:
曹德菊,教授,主要从事环境污染修复与评价研究。cdj@ahau.edu.cn

孙翔。330140588@qq.com

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出版历程
- 收稿日期: 2021-01-18
- 刊出日期: 2022-11-08

THE FORMATION OF AEROBIC GRANULAR SLUDGE INDUCED BY Ca²⁺, Mg²⁺ AND Fe²⁺ AND ITS SEWAGE TREATMENT EFFECT

1. School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China;
2. Anhui Landing Environmental Energy Technology Co., Ltd, Hefei 230036, China

摘要

摘要: 研究了Ca²⁺、Mg²⁺、Fe²⁺诱导好氧颗粒污泥(AGS)的形成,探讨其对COD、NH₄⁺-N、TP的去除效果,研究了有机污染负荷、温度、曝气量对污水处理效果的影响及AGS连续运行稳定性。结果表明:Ca²⁺、Mg²⁺、Fe²⁺可促进AGS形成,其中位径达到340 μm时分别需18,16,11 d。添加Ca²⁺、Mg²⁺和Fe²⁺的污泥SVI₃₀稳定在较低水平,MLSS高于自然形成的AGS,特别是Fe²⁺的脱氢酶活性较高。Ca²⁺、Mg²⁺、Fe²⁺诱导形成的AGS对COD、NH₄⁺-N、TP的处理效果较好,其中添加Fe²⁺的AGS的效果最好,在低、高有机负荷,超低温(4 ℃)和超高温(40 ℃)及曝气不足(1 L/min)情况下,均有较好的COD、NH₄⁺-N、TP去除效果。Ca²⁺、Mg²⁺、Fe²⁺诱导形成的AGS稳定运行60 d后仍有较好的处理效果,其中Fe²⁺诱导的AGS的COD、NH₄⁺-N、TP去除率高达96.3%、96.8%、88.7%。
- 好氧颗粒污泥 /
- Ca²⁺ /
- Mg²⁺ /
- Fe²⁺ /
- 颗粒化时间 /
- 污水处理效果 /
- 稳定性
Abstract: This paper studied Ca²⁺, Mg²⁺ and Fe²⁺promoting the formation of aerobic granular sludge, discussed the removal effect of aerobic granular sludge induced by Ca²⁺, Mg²⁺and Fe²⁺on COD, NH₄⁺-N and TP, studied the effects of environmental factors such as organic pollution load, temperature and aeration quantity on wastewater treatment, and then evaluated the operation stability of the granular sludge running for 60 days. The results showed that the addition of Ca²⁺, Mg²⁺ and Fe²⁺ could promote the granulation of AGS, and the intermediate diameter of the AGS reached 340 μm needed 18, 16, 11 days, respectively. The SVI_{30 min} of sludge induced by Ca²⁺, Mg²⁺and Fe²⁺ decreased continuously and got stabilized at a lower level. The value of MLSS was higher than that of the control, especially Fe²⁺, and its dehydrogenase activity was higher. The granular sludge induced by Ca²⁺, Mg²⁺ and Fe²⁺ all had a good treatment effect on COD, NH₄⁺-N and TP, significantly higher than the control group, especially the granular sludge induced by Fe²⁺. The granular sludge induced by Fe²⁺ showed a better removal effect on COD, NH₄⁺-N and TP in wastewater under ultra-low temperature (4 ℃), ultra-high temperature (40 ℃) and insufficient aeration (1 L/min). The granular sludge induced by Ca²⁺, Mg²⁺ and Fe²⁺ had good stability in sewage treatment in 60 days’ running. The removal rate of COD, NH₄⁺-N and TP in AGS induced by Fe²⁺ still came up with 96.3%, 96.8% and 88.7%.
- aerobic granules /
- Ca²⁺ /
- Mg²⁺ /
- Fe²⁺ /
- particle forming time /
- sewage treatment effect /
- stability

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