| 摘要 |
<p>The water-based effluent treatment procedure, including a biological treatment stage in which the effluent is put in contact with micro-organisms in an aeration tank, leading to the production of a biological sludge, uses an ozoniferous gas injected into the aeration tank to reduce the amount of sludge. The gas contains at least 2.5 mg and up to 300 mg of ozone per litre, and it is injected into the aeration tank with ythe aid of an apparatus that produces an emulsion of ozoniferous gas and effluent. The gas can be injected, for example, by means of an effluent pump and a Venturi nozzle fed with ozoniferous gas, of the type marketed under the name of Ventoxal (RTM) by Air Liquide, or by a screw and selfsuction turbine with a common drive shaft, marketed as Turboxal (RTM). The effect of the injected ozone is to break down flocks and microorganism cell walls, reducing the biomass.</p> |
