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Chain scraper systems are designed for both bottom and surface scraping with tank dimensions ranging up to 100 meters in length and widths up to 12 meters .
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| Rectangular tanks are commonly used in both primary and secondary sedimentation. Popularity of rectangular tanks is rapidly increasing throughout the world because of simple construction, reliability and removal efficiency. |
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| Rectangular tanks occupy less space than circular tanks and can be economically built side by side with shared walls. In addition, they can be built on top of each other. Unlike circular tanks rectangular tanks require simple and proven design. |
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| Sludge Removal efficiency of the chain and flight type collector mechanism is much higher than with the circular type. |
