[1]罗锋,盛德洋,张忠祥,等.生物接触氧化法去除微污染水中氨氮的中试研究[J].中国给水排水,2022,38(20):109-115.
　LUOFeng,SHENGDe-yang,ZHANGZhong-xiang,et al.Pilot?scale Study on the Removal of Ammonia Nitrogen from Micro-polluted Water by Bio-contact Oxidation Process[J].China Water & Wastewater,2022,38(20):109-115.
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生物接触氧化法去除微污染水中氨氮的中试研究

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第38卷 期数: 2022年第20期 页码: 109-115 栏目: 出版日期: 2022-10-17
Title:
Pilot?scale Study on the Removal of Ammonia Nitrogen from Micro-polluted Water by Bio-contact Oxidation Process
作者:
罗锋1,2， 盛德洋1， 张忠祥1， 陶涛2
（1.东莞市水务集团有限公司，广东 东莞 523000；2.华中科技大学 环境科学与工程学院，湖北 武汉 430074）
Author(s):
LUO　Feng1，2， SHENG　De-yang1， ZHANG　Zhong-xiang1， TAO　Tao2
（1. Dongguan Water Group Co. Ltd.， Dongguan 523000， China； 2. School of Environmental Science & Technology， Huazhong University of Science and Technology， Wuhan 430074， China）
关键词:
挂填料;  生物接触氧化;  微污染水;  氨氮
Keywords:
suspended filler;  bio-contact oxidation;  micro-polluted water;  ammonia nitrogen
摘要:
对辫带式悬挂填料生物接触氧化法处理微污染运河水进行中试研究，结果表明，在原水自然挂膜条件下，采用闷曝和逐渐缩短停留时间的方式，挂膜启动过程在21 d内完成，氨氮去除率达到94.5%；挂膜完成后的填料表面生物相丰富，外观蓬松分散，并未聚结成团；稳定期进水氨氮日均值为6.40~7.74 mg/L，氨氮去除量为4.63~5.42 mg/L，平均为5.0 mg/L，硝化负荷为0.17~0.20 kgN/（m3·d）；氨氮去除率随推流方向先升高后略有降低，前、中、后段平均硝化负荷分别为0.12、0.26、0.21 kgN/（m3·d），最高达0.31 kgN/（m3·d）；将水力负荷由15.3 m3/（m2·d）提升到25.2 m3/（m2·d），氨氮去除率由90.3%下降至70.1%，46 h后恢复至95.9%；将氨氮浓度由5.47 mg/L提高到8.0 mg/L，氨氮去除量由4.89 mg/L降至3.30 mg/L，39 h后恢复至4.88 mg/L。辫带式悬挂填料生物接触氧化法挂膜启动简单快捷，氨氮去除效果稳定，对水力和氨氮负荷冲击适应能力良好，可为微污染水体修复或微污染水源水预处理提供借鉴。
Abstract:
A pilot study on the treatment of micro-polluted river water by bio-contact oxidation process with braided suspended filler was carried out. The results showed that under the condition of natural biofilm formation, the start-up process of pilot-scale plant was completed within 21 days by means of closed aeration and gradually shortening the residence time with the ammonia nitrogen removal rate of 94.5%. The filler surface was rich in biophase and the appearance was fluffy and dispersed without agglomerate. In the stable period, the daily average influent ammonia nitrogen was 6.40-7.74 mg/L, the ammonia nitrogen removal amount was 4.63-5.42 mg/L with average of 5.0 mg/L, and the nitrification load reached 0.17-0.20 kgN/(m3·d). The ammonia nitrogen removal efficiency of different sections first increased and then decreased slightly with the flow. The average nitrification loads of the front, middle and posterior sections were 0.12, 0.26, 0.21 kgN/(m3·d) respectively, up to 0.31 kgN/(m3·d). The ammonia nitrogen removal rate decreased from 90.3% to 70.1%, while the hydraulic load increased from 15.3 m3/(m2·d) to 25.2 m3/(m2·d), and recovered to 95.9% after 46 h operation. The ammonia nitrogen removal amount decreased from 4.89 mg/L to 3.30 mg/L when the influent ammonia nitrogen concentration increased from 5.47 mg/L to 8.0 mg/L, and recovered to 4.88 mg/L after 39 h operation. The bio-contact oxidation method with braided suspended filler has the advantages of simple and fast start-up, stable ammonia nitrogen removal efficiency and good adaptability to the impact of hydraulic and ammonia nitrogen load, which can provide reference to the remediation of micro-polluted water body or the pretreatment of micro-polluted source water.

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更新日期/Last Update: 2022-10-17