酸性聚合物介导的细菌间聚合:一种用于快速有氧颗粒发育的新方法
Sajid Hussain1, Khan Muhammad Brohi2, Umberto Gallina3
1Department of Civil, Environmental, and Mechanical Engineering, University of Trento, Via Mesiano, 77, Trento, Italy.
Chemosphere
|October 24, 2024
概括
这项研究表明,Hydrofloc C4400SA阴离子聚合物有效地播种有氧颗粒污泥 (AGS) 反应器,加速颗粒形成并提高没有注射污泥的废水处理效率.
科学领域:
- 环境科学 环境科学
- 生物技术是生物技术.
- 化学工程是化学工程的重要组成部分.
背景情况:
- 有氧颗粒污泥 (AGS) 技术对于高效的废水处理至关重要.
- 传统的AGS启动可能耗时,需要注射污泥.
- 开发快速稳定的AGS形成方法对于实际应用至关重要.
研究的目的:
- 引入一种新的方法,用于使用阴离子聚合物播种AGS反应堆,从而绕过了对注射污泥的需求.
- 为了评估不同的阴离子聚合物 (Hydrofloc C4400SA,C8896,聚电解质乳液) 对于AGS启动的有效性.
- 为了确定最佳的聚合物剂量,以快速稳定的有氧颗粒形成.
主要方法:
- 在一个AGS测序批量反应堆 (SBR) 中,三种阴离子聚合物作为播种剂进行了测试.
- 确定了最有效聚合物的最佳剂量.
- 在80天内监测了颗粒的形成,大小和稳定性.
- 在稳定状态运行期间评估了废水处理性能 (TP,TN,NH4-N,COD去除).
主要成果:
- 在促进有氧颗粒形成方面,Hydrofloc C4400SA显著优于其他测试过的聚合物.
- 通过15ppm的Hydrofloc C4400SA实现了最佳的颗粒发育,在10天内形成密集的颗粒.
- 80天后观察到稳定的颗粒 (0.6-0.9毫米),具有高的污染物去除效率 (例如97%的NH4-N,79%的COD).
结论:
- 阴离子聚合物,特别是Hydrofloc C4400SA,为AGS反应堆的种植提供了一种可行和高效的方法.
- 这种方法显著减少了AGS启动时间,并确保了稳定的颗粒形成.
- 该研究强调了Hydrofloc C4400SA在改善废水处理中的AGS性能和弹性方面的潜力.
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