Geological Engineering Program, Missouri University of Science and Technology, 129 McNutt Hall, 1400 N Bishop Ave, Rolla, MO, 65409, USA.
Department of Material Science and Engineering, Missouri University of Science and Technology, 223 McNutt Hall, 1400 N Bishop Ave, Rolla, MO, 65409, USA.
Water Res. 2016 Nov 1;104:28-33. doi: 10.1016/j.watres.2016.07.076. Epub 2016 Aug 2.
Ceramic pot filters represent a common and effective household water treatment technology in developing countries, but factors impacting water production rate are not well-known. Turbidity of source water may be principal indicator in characterizing the filter's lifetime in terms of water production capacity. A flow rate study was conducted by creating four controlled scenarios with different turbidities, and influent and effluent water samples were tested for total suspended solids and particle size distribution. A relationship between average flow rate and turbidity was identified with a negative linear trend of 50 mLh/NTU. Also, a positive linear relationship was found between the initial flow rate of the filters and average flow rate calculated over the 23 day life of the experiment. Therefore, it was possible to establish a method to estimate the average flow rate given the initial flow rate and the turbidity in the influent water source, and to back calculate the maximum average turbidity that would need to be maintained in order to achieve a specific average flow rate. However, long-term investigations should be conducted to assess how these relationships change over the expected CPF lifetime. CPFs rejected fine suspended particles (below 75 μm), especially particles with diameters between 0.375 μm and 10 μm. The results confirmed that ceramic pot filters are able to effectively reduce turbidity, but pretreatment of influent water should be performed to avoid premature failure.
陶瓷滤芯是发展中国家常见且有效的家用水处理技术，但影响产水率的因素尚不清楚。原水浊度可能是表征滤芯使用寿命和产水能力的主要指标。通过创建四个不同浊度的控制场景进行了流速研究，并对进水和出水样品进行了总悬浮固体和粒径分布测试。发现平均流速与浊度之间存在负线性关系，斜率为 50 mLh/NTU。此外，还发现过滤器的初始流速与实验 23 天内的平均流速之间呈正线性关系。因此，可以建立一种根据初始流速和进水源浊度来估算平均流速的方法，并反向计算为达到特定平均流速所需维持的最大平均浊度。然而，应该进行长期调查，以评估这些关系在预期 CPF 寿命内如何变化。CPF 去除了细小的悬浮颗粒（低于 75μm），特别是直径在 0.375μm 和 10μm 之间的颗粒。结果证实陶瓷滤芯能够有效降低浊度，但应进行进水预处理以避免过早失效。
