在以日本佐美河水为原水的膜水处理系统中，进行了中试试验，以研究一种新型的微滤水浓缩器。膜过滤浓缩机在浸入式死端过滤过程中表现出浓差极化现象，被证明适用于物理清洗滞留水的浓缩，在过滤流速高达0.5 m/天时，平均浊度为100 NTU，最大浊度为400 NTU。新增稠剂使前置膜过滤系统的原水回收率提高了99%以上。然而，超高浊度（超过420 NTU）导致过滤阻力迅速增加。较高的流速（0.5 m/天）比较低的流速（0.3 m/天）保持较低的阻力，因为在较高的流量下，城市水被更快地推向浓缩锥。 粒径分布分析表明，粒径小于3μm的颗粒倾向于留在浓缩池中并积聚，因此附着在膜表面，导致过滤阻力增加。包括5个参考文献、表格、图表。

Pilot plant experiments were performed to investigate a novel microfilterretentate water thickener in a membrane water treatment system which uses Japan's Sagami River water as the raw water source. The membrane filter thickener, which showed the concentration polarization phenomenon in the submerged dead-end filtration process, was proved to be applicable to the thickening of the physical washing retentate water, which has a mean turbidity of 100 NTU and a maximum turbidity of 400 NTU at a filtration flow rate as high as 0.5 m/day. The raw water recovery rate of the preceeding membrane filtration system was increased in excess of 99% by the new thickener. However, extra high turbidity (over 420 NTU) caused a rapid increase in filtration resistance. Higher flow rates (0.5 m/day) maintained lower resistance than lower flow rates (0.3 m/day) becauseturbid water was pushed down to a concentration cone faster at higher flux. Particle size distribution analysis showed that particles finer than 3 um tend to remain and accumulate in the thickening basin, and therefore attach to the surface of membranes and lead to increased filtration resistance. Includes 5 references, tables, figures.