| 摘要 |
<p>The waste water enters through the inlet piping IN to the trickling filter and passes by gravity through the filtermaterial II and the supporting drain floor III to the bottom of the prefabricated tank I. When the waterlevel below the supporting drain floor III in the prefabricated tank I reachs the maximum water level then the level switch of the pump V starts the pump. At that moment the treated water is pumped through the pump discharge pipe VI against the plate with regulating plate VII. Due to the water velocity of the water stream against this plate VII water jets are forms which are disperged over the total surface of the filter material II. A certain amount of the pumped water is due to the pressure losses evacuated through the T-piece in the discharge pipe VI to the outlet OUT. The amount of treated water to the outlet OUT can be regulated by a regulation device and the distance between the fixation plate XI and the regulation plate VII. If the capacity at the inlet IN of the waste water is smaller than the capacity to the outlet OUT, the water level below the supporting drain floor III drops. The pump V stops at the minimum water level. The necessary air for the aerobe function of the trickling filter is assured by the air inlet pipe VIII ( with optional fan IX ) that just ends below the supporting drain floor.The tank has a airtight access X. <IMAGE></p> |
