SANITARY SEWAGE SYSTEM RECOVERY ASSESSMENT

File: 011696_129_15_054.txt
Page: 054
Total Pages: 71







                                            "Pmmlx

                                  ODOR CONTROL CONTINGENCY PLAN




                 BACKGROUND.*

                       There  is considerable concern regarding the odors
                 originating  from current discharges of raw sewage to.the Gulf
                 of Arabia, and those which originate in the sewer coll     'ection
                 system pipe lines and pump stations. Of concern'also are the
                 odors originating at the treatment plants having significant
                 residential growth nearby.

                       The odor problem originates with the anaerobic (septic)
                 conditions in the sewer collection system, and the resulting
                 gas formation. One specific gas, hydrogen sulphide (H2S) , is
                 the cause of the "rotten egg" smell which most people find
                 most objectionable. @There are numerous other gases produced
                 when sewage is at elevated temperatures and under      'anaerobic
                 conditions, some of which are- present even in - aerobic
                 conditions.    These include amines (fishy smell), diamines
                 (decayed f lesh) . marcaptahs (decayed cabbage or skunky) ,
                 organic sulfides (rotten cabbage) , and skatole (fecal matter). -
                 The existing Kuwait City sewer system. aggravates the odor
                 problems because of long sewer lines and low flow rates and
                 velocities with in the pipelines.      Also, the temperature of
                 the sewage is much higher than commonly expected because of
                 the climate.



                 PHYSICAL SITUATION:
                       In the vicinity of the central Kuwait City there are
                 three 3 main raw sewage outfalls to the bay.           Figure .1@
                 depicts the location of the outfalls and the source of the raw
utfall pipe. The elimination of
                 the raw sewage discharge to the bay is dependent on the
                 restoration of the pumping station capability prior to the
                 !schedured conference. Currently that schedule for some of the
                 contributing pump stations is not known with great certainty.
                 Delays are being caused by the unavailability of re lacement
                                                                        p
                 parts and long delivery   times for large electric pump motors
                 and control components.

                       When discharging the raw sewage to the bay, the resultant
                 odors on land are dependent on factors which are not possible
                 to control. The direction of the wind and stage of the tides
                 have predictable influences on the presence and strength of
                 the odors on land. Because control of winds and tide is not



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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 = 00000055.tif