SANITARY SEWAGE SYSTEM RECOVERY ASSESSMENT

File: 011696_129_15_035.txt
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Total Pages: 71







                 IV. SEWAGE TREATHEIVT PLANTS,

                       1. General:    Kuwait city is served by three wastewater
                 treatment plants, Ardiya, @ikka, and Tahra. The plants are
                 based on the activated sludge process. Each of the plants is
                 designed to 'bypass sewage or partially treated sewage by
                 gravity to -the sea in the event some form of plant failure
                 prevents the treatment of sewage.       This is an "automatic"
                 system in that the wastewater overflows to the bypass piping.
                 Ardiya is the largest with a design capacity of 50 MGDI Rikka
                 and Jahra are smaller plants with 17 MGD and a MGD capacities,
                 respectively. The following paragraphs describe each plant.

                 A. Ardiy-a wastewater Tz-eatment Facility

                       1. General Description: This is the largest and oldest
                 of the Kuwait city treatment facilities.          The existing
                 treatment system is divided into two major treatment trains
                 commonly referred to as the Old Plant and the Extension. The-
                 ef fluent from the second stage systems is t'hen further-treated
                 by the Ardiya tertiary treatment facility. see Figure 9 for
                 the Ardiya plant layout.

                       (a) Old Plant. The old plant became operational in 1972.
                 It was designed to accept raw wastewater from major pump
                 stations A7, A9, AlOp All,, and A12. The raw wastewater enters
                 the plant through influent structures equipped with odor
                 control facilities and bar screens. The inflow is then split
                 equally.between the Old Plant and the Extension. The design
                 average flow for the plant is 190,000 le per day and 210,000
                 le per day maximum.   Of this amount, about two-thirds of the
  flow (130,000 le/day) flows to the Old Plant with the
                 remaining one-third (60,000 M3/day) flowing to the Extension.
                       At the old plant, wastewater water' flows into a -
                 preaeration/equalization basin, through grit chambers, -then
                 the first stage aeration tanks. If necessary the capability
                 exists to by-pass a portion of the flow to the Gulf via a 700
                 mm conduit. After first stage.aeration, the wastewater is
                 routed into six first stage clarifiers. From the clarifiers,
                 the wastewater is treated in the second stage aeration basins,
                 followed by six second stage clarifiers. The effluent from
                 the clarifiers which could then be classified as secondary
                 treated effluent, can be conveyed to the tertiary treatment
                 system (described later in this report) or discharged into the
                 Arabian Gulf.
                       (b)' The portion of the Ardiya facility referred to as
                 the Extension Plant became operational in 1984 and is
                 therefore a relatively new addition. The Extension Plant was
                 designed t6 treat approximately 60,000 M3/day which first.


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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 = 00000036.tif