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Sedimentation tests for waste water with a high content of suspended solids
Tests of sedimentation rates were performed with wastewater generated during paper production and processing of waste paper in our laboratory. Such wastewater is characterized by high content of insoluble substances. One of the first steps of treatment technologies is their separation, most often by sedimentation. To ensure optimal design, tests were performed, based on which the necessary dimensions of the sedimentation tank were specified.
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Cotton irrigation and extreme droughts: how the Aral Sea turned into desert
Formerly the fourth largest freshwater lake in the world used to have an area of 67,000km2. The area shrunk to one fourth of its original area.
Wastewater treatment in big cities: follow Hanoi's example
Hanoi is planning to build a sewer system to direct the polluted water from the To Lich River to a wastewater treatment plant. What seems to be a...