초록 ▼

An odor control system for a settling tank containing a pool of wastewater to be clarified in which suspended particles are removed by gravitational settling and the water at the surface of the pool is clarified. Supported within the tank is an elongated effluent trough having a weir at one side the

An odor control system for a settling tank containing a pool of wastewater to be clarified in which suspended particles are removed by gravitational settling and the water at the surface of the pool is clarified. Supported within the tank is an elongated effluent trough having a weir at one side thereof which extends upwardly therefrom to permit clarified water from the pool to spill over into the trough. Mounted over the trough along its full length is a hood having a side wall which extends into the pool at a position displaced from the weir the hood being constituted by a series of sections. The hood acts to capture noxious gases emitted into a region above the surface of the water therebelow as the clarified water spills over into the trough. The hood is provided with an inlet and an outlet duct whereby atmospheric air drawn through the inlet duct into the region under the hood entrains the emitted gases to produce a gas-laden air stream that flows at a specified velocity and is discharged from the outlet duct into an external scrubber. Formed in each hood section is a closable port providing access for test probes to determine the velocity of the gas-laden stream in the region and the concentration of the gases therein.

대표청구항 ▼

An odor control system for a settling tank containing a pool of wastewater to be clarified and provided with an elongated effluent trough on one side of which is an upwardly extending weir permitting clarified water at the surface of the pool to spill over into the trough, said system comprising: (a

An odor control system for a settling tank containing a pool of wastewater to be clarified and provided with an elongated effluent trough on one side of which is an upwardly extending weir permitting clarified water at the surface of the pool to spill over into the trough, said system comprising: (a) an elongated hood formed by a series of sections mounted over the trough and its weir along the full length thereof and including a side wall that extends downwardly into the pool at a position displaced form the weir to capture noxious gases which are emitted into a region above the clarified water in the trough; (b) an inlet duct and an outlet duct coupled to the hood and communicating with said region whereby when the system is in operation air drawn into the region through said inlet duct entrains the emitted gases to produce a gas-laden air stream that flows at a specified velocity through the region and is discharged therefrom through the outlet duct; and (c) a closable port formed in each of the series of sections of said hood providing access to said region through said port by test proves to determine while the system is in operation the velocity of the gas-laden stream and the concentration of the gases therein, said said closable ports and said test probes being configured such that said test probes, when inserted in said ports, the effectively seal said ports to prevent the escape of the air stream from the region.