| 摘要 |
<p>PURPOSE: A method for automatically deaerating biofilm using a backwashing system which reduces opening and closing steps of valve, minimizes interruption of flow through filter and removes drain step of the filter is provided. CONSTITUTION: In a method for automatically deaerating a biological water treating filter of downstream having various water levels, influent flow flown in upper part of the filter and effluent flow flown out from the base part of the filter, the method comprises a step (a) of preventing drain of the filter comprising backwashing system by stopping the effluent flow; a step (b) of flushing gas captured from the filter by flowing in backwashing water flow in the base part of the filter; a step (c) of checking whether the filter is overflown or not by automatically checking water level of the filter; a step (d) of discharging backwashing wastewater when the water level of the filter reaches the overflowing level; a step (e) of releasing gas captured from the filter by continuously flushing the filter; a step (f) of stopping the backwashing water flow and backwashing wastewater flow if backwashing water flow and backwashing wastewater flow exist, and operating the filter again by discharging the effluent flow from the filter; and a step (g) of maintaining the influent flow during the steps (a) to (f).</p> |
