| 摘要 |
<p>#CMT# #/CMT# The device for treating nitrogenous effluents collected by a single-unit wastewater system, comprises a flow rate control device (8) of incident effluents for separating two flows such as a through flow limited to a specific value and an excess flow, a reed-type filter (1) for receiving a through flow derived from the flow rate control device, and a pond (5) for receiving the through flow in an output of the reed-type filter and an excess flow derived from the flow rate control device comprising a tank. #CMT# : #/CMT# The device for treating nitrogenous effluents collected by a single-unit wastewater system, comprises a flow rate control device of incident effluents for separating two flows such as a through flow limited to a specific value and an excess flow, a reed-type filter for receiving a through flow derived from the flow rate control device, and a pond for receiving the through flow in an output of the reed-type filter and an excess flow derived from the flow rate control device comprising a tank. The tank comprises outwards evacuating unit consisting of a discharge (13) with controlled flow not less than the specific value, a secured overflow (14) arranged at a higher level, and a vortex regulator. The evacuation level with controlled flow and the higher level of overflow of the tank defines a retention volume between both the levels. The specific value is equal to a maximum flow in dry weather, which exists in an entry of the effluent treatment device. The cumulated surface of the reed-type filter and the pond is lower than 6.5 m2>/60 g of pollution received per day in an average of dry weather. The pollution is expressed in biological oxygen demand on 5 days. The evacuation level with controlled flow is connected to the vortex regulator. The reed-type filter comprises tanks to be traversed in an alternate way by cross flow. An independent claim is included for a method of treating nitrogenous effluents collected by a single-unit waste water system. #CMT#USE : #/CMT# Useful for treating nitrogenous effluents collected by single-unit wastewater system. #CMT#ADVANTAGE : #/CMT# The device effectively treats the effluents collected by single-unit wastewater system and ensures good performance, and is cost effective. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The diagram shows the device for treating nitrogenous effluents collected by a single-unit wastewater system: 1 : Reed-type filter 5 : Pond 8 : Flow rate control device 13 : Discharge 14 : Secured overflow.</p> |
