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评估水下滑脂对缓慢的沙器性能和操作的影响

Tolulope Elemo¹, Michael Chipps², Nigel Graham³

¹Cranfield University, Cranfield MK43 0AL, United Kingdom.

|February 11, 2025

概括

慢砂过器 (SSF) 的水下脱脂 (UWS) 与传统的干脱脂 (DS) 相比,可以改善微生物水质的恢复. 这种方法通过减少停机时间并保持有效的过性能来提高水的生产率.

科学领域:

环境工程环境工程
水处理技术水处理技术
微生物学微生物学

背景情况:

缓慢的沙过器 (SSF) 是有效的水处理系统,但传统的干 (DS) 清洗会导致大量的停机时间.
水下脱脂 (UWS) 是一种替代的清洁方法,可以避免排水过床,但人们对其对过质量和过器性能的影响存在担忧.
之前的研究还没有充分评估UWS与DS在微生物清除和过器恢复方面的风险和益处.

研究的目的:

为了比较通过UWS清理的SSF的过质量,微生物清除效率和回收率,与DS相比.
评估与UWS相关的潜在风险,包括头部损失的发展和颗粒透.
为了研究UWS期间不同甜度流速对过器性能的影响.

主要方法:

试点规模的SSF同时运行并使用DS或UWS方法清理.
通过测量度和微生物指标 (大肠杆菌总数) 来评估过质量.
监测了头部损失的发展和恢复,以评估颗粒透率和清洁效率.

主要成果:

无论是DS还是UWS方法,都实现了有效的度去除 (0.04-0.9 NTU).
与DS过器相比,UWS过器在清洗后显示了微生物水质的优异恢复,与DS过器相比,总胆固醇计数显著降低 (1-109 MPN/mL vs. 1-1414 MPN/mL).
这两种清洗方法都显示了令人满意的头损回收,表明粒子透率有限.

结论:

UWS是清洁SSF的DS的可行替代品,提供了改善微生物水质恢复和减少停机时间.
施穆茨德克的微生物群落主要受到季节性变化和成熟的影响,而不是清洁方法.
UWS提高了水的生产力,并允许在水处理系统中更好地利用SSF.

关键词:

干燥脱脂 (DS) 是指干燥脱脂的方法.过器的清洁过器的清洁缓慢的沙子过器 (SSF)在水下滑皮 (UWS)

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