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沉淀后的泥沙水样,处理前需抽取清水。但抽水时总是难以抽的比较干净,余水较多时往往需要小瓶换大瓶处理;大沙时又要分瓶处理。稍有不慎,明将水样搞混,前功尽弃,增加了许多不必要的工作量。现将抽取沙样的一种简便方法介绍如下,供参考。1.将盛有水样的沙桶置于泥沙处理工作台上,在保持沉淀沙面不动的情况下,尽量将沙桶倾斜(一般约20～30°左右)。
After sedimentation of sediment and water samples, clean water must be taken before treatment. However, when pumping water, it is always difficult to pump and it is relatively clean. When there is a lot of excess water, it is often necessary to change the vial for a large bottle. When the big sand is used, it is divided into bottles. Inadvertently confusing the water samples and prejudice the work has added a lot of unnecessary workload. A convenient method for extracting sand samples is described below for reference. 1. Place the sand bucket containing the water sample on the sediment treatment bench, and tilt the sand bucket as much as possible (generally about 20 to 30°) while keeping the sediment sand surface intact.