| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a sewage treatment system in which the solid-liquid separation of sewage and the concentration of generated excess sludge in cleaning treatment can be done efficiently with the use of one screen type solid-liquid separator. SOLUTION: This system is provided with the solid-liquid separator 10, a flow rate adjustment tank 13, a bio-treatment tank 14, a precipitation tank 15, a sludge receiving tank 16, and a a sludge storage tank 17. Usually, the solid-liquid separation is done by supplying the sewage from a raw water pump tank 11 to the separator 10. During the stop of the solid-liquid separation, the excess sludge is supplied from the tank 16 to the separator 10, concentrated by being passed through the separator 10, and sent to the tank 17.</p> |
