系统地采集黄河内蒙古段上覆水、悬浮物和底泥样品，分析其中重金属元素的含量。
Samples of overlying water, suspended particles and bed mud in the Inner Mongolia stretch of the Yellow River were collected systemically and their heavy metal element contents were analysed.
注意：冷却水不得含有悬浮物、矿物质、金属杂质，不溶性和腐蚀性物质。
Note: the water for coolant shall be demineralized water without suspended matter, impure matter, unsolvable matter and corrosiveness matter.
新余钢铁有限责任公司轧钢一厂废水处理系统原基本为直流系统，大量含悬浮物水直接排放。
A lot water of containing suspended matter is direct discharged in No. 1 steel rolling works of Xingang.
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