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Tao H.,Xinjiang Agricultural University | Qiu X.,Xinjiang Agricultural University | Li W.,Xinjiang Survey and Design Institute of Water Conservancy and Hydropower | He Z.,Xinjiang Survey and Design Institute of Water Conservancy and Hydropower | Xu L.,Xinjiang Survey and Design Institute of Water Conservancy and Hydropower
Advances in Science and Technology of Water Resources | Year: 2013

The static water settlement tests of four different sediment concentrations were carried out in a gill-piece separation device (GPSD) with seven different gill-piece spacing and in a common tube without gill-piece. Meanwhile, the water-sediment separation performance of different gill-piece spacing was analyzed by using the theory of "shallow precipitation". Test results show that the water-sediment separation effect of a GPSD is better than that of a common tube without gill-piece, and the average sediment settling velocity of different gill-piece spacing in a GPSD is 1.4-3.25 times of that in a common tube without gill-piece. The smaller the gill-piece spacing is, the bigger the sediment settling velocity is, and vice versa. The gill-piece spacing between 5-15 cm has the greatest effect on clear water layer thickness and sediment settling velocity. Furthermore, considering the economy and the difficulty of production process of a GPSD, the optimal gill-piece spacing is chosen to be 10 cm finally. Source

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