SANITARY SEWAGE SYSTEM RECOVERY ASSESSMENT

File: 011696_129_15_033.txt
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Total Pages: 71







                   2. Odor Control Systems. The various methods of odor- include
                  those presented in Table 1, below.

                                       Table I
                       Method                            Process

                       Source control.       Replace or  modify operating systems
                       Absorption            Capture by  water or other fluids
                       Adsorption            Capture by  activated'carbon
                       Biological            Oxidation by microorganisms
                       Chemical              Oxidation by odor components
                       Condensation          Cooling of odorous stream
                       Containment           Hold or retain for treatment
                       Counteraction        Diminish in presence of another odor
                       Dilution              Dispersion below threshold levels
                       -incineration       .Combustion of odor agent
                       Masking               Superimpose a fragrance

                  (From Standard Handbook of EnvirarL mental Engineering, 199o, by
                  Robert A. Corbitt; McGraw Hill Publishing Co., N;Y.


                       EPW installed 146 odor control systems throughout the
                  sewage system. The general types of systems used are listed
                  below:

                         Types of   SystpmA
                                  Wet scrubbers at Ardiya WWTP and 7 major
                                  pumping stations
                                  Large Carbon absorption units at major pumping
                                  stations
                                  pH control system at Ardiya WWTP
                                  Small carbon filters at minor pumping stations
                                  Force main air injection systems at 15 major
                                  pumping stations
 at 56 minor pumping
                                  stations
                                  Manhole sealing

                       Condition  of Odor Control Systems at Time Liberation.
                  The various odor control systems appeared to have sustained
                  .little or no dainacte during the war and were therefore in the
                  same general condition at liberation as before the invasion.
                  The systems were not operational due to lack of maintenance
                  and chemicals and supplies needed for operation.


                       Present Condition.    Virtually every component of the
                  sewacte system fnetwork and sewage treatment facilities) is now
                  generating or has the Potential for generating obnoxious
                  odors. A three-week informal survey of the system has shown
                  that the same areas do not always have odor problems, but many

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Box ID = BX000000
Unit = CONST ENG LABS  
Parent Organization = CORPS OF ENGS   
Folder Title = SANITARY SEWAGE SYSTEM RECOVERY ASSESSMENT                                                      
Subject = SANITARY SEWAGE SYSTEM RECOVERY ASSESSMENT
Document Number =        129
Image file name = 00000034.tif