Oil and gas wastewater radioactivity persists in Pennsylvania stream sediments

Radioactivity from oil and gas wastewater persists in Pennsylvania stream sediments

Photo: Treated oil and gas wastewater flows into a stream in western Pennsylvania. A new Duke study finds stream sediments at disposal sites such as this one have levels of radioactivity that are 650 times higher than at unaffected upstream sites. Credit: Avner Vengosh, Duke University

The contamination is coming from the disposal of conventional, or non-fracked, oil and gas wastewater, which, under current state regulations, can still be treated

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Water treatment for cement plant wastewater

Water treatment for cement plant

Highlighting the importance of water treatment for cement plant wastewater.

A cement plant wastewater treatment system has to be highly effective in order to remove the minute particulate that remains after cement production. This task becomes even more important when a closed system – the industry standard – is in place and the waste water is reused over and over again. In cement industries water is used only for cooling … [more…]