Process and apparatus for the biological purification of waste waters which are produced seasonally in a greatly increased amount and/or with a greatly increased dirt load

摘要

In order to be able to process waste waters (effluents) produced seasonally, e.g. in vineyards and winemakers', in a light load activation plant which is designed for the average waste water production over the entire year, the plant is equipped with an additionally connectable full load stage, composed of a trickling filter and downstream aerated auxiliary tank. The seasonal waste waters are prepurified in this by a multiple recirculation through the trickling filter and subsequent aeration in the auxiliary tank, with or without contact with the return sludge, with a degree of purification of e.g. 60 to 80%, before the waste waters, without intermediate clarification, are delivered to the light load activation stage for complete purification.