深海孔隙水原位采样柱过滤性能试验

Experiment About the Filtration Performance of Deep Sea Pore Water in Situ Sampler

在原位采样柱过滤系统的基础上,为检测过滤精度能否达到5μm,在确保过滤网层材质和结构分布达到要求的情况下,对过滤孔径分别为1.0,1.5和2.0 mm的采样柱进行了分组试验.试验结果表明:采样柱过滤孔径会直接影响储样室内孔隙水中沉积物粒径的大小,从而间接影响到孔隙水的澄清度.试验具有原创性和可重复性,经过5次试验后,可以将过滤孔径为1.0 mm的采样柱作为最佳的过滤设备,同时满足了过滤精度能够达到5μm的技术指标,从而为采样柱的设计提供了参考依据.

Based on the filtration system of sampling column,the filtering accuracy whether was up to 5 μm was detected. In order to ensure that the material and structure distribution of the filter layer meet all requirements,the experiments of sampling columns were conducted,which was respectively 1. 0,1. 5 and 2.0 mm of filter aperture. The experimental results show that the filter aperture of sampling column directly have an effect on the the size of the sediment particle in the sample chamber,which indirectly affects the clarity of pore water. The test is original and repeatable.After 5 trials,the sample size of 1 mm can be used as the best filtering equipment,which meet the technical specifications of the filter accuracy of 5 μm,which provides a reference for the design of the sampling column.