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SANITARY ENGINEERING DEPARTMENT CIVIL ENGINEERING WASTEWATER ENGINEERING .

???????? ???????? ( ???????? ?????????? )Secondary (Biological ) Treatment

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SANITARY ENGINEERING DEPARTMENT CIVIL ENGINEERING WASTEWATER ENGINEERING .

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    1. ??? ??????? ?????? SANITARY ENGINEERING DEPARTMENT ??? ??????? ??????? CIVIL ENGINEERING ????? ?????? ????? ????? ????? WASTEWATER ENGINEERING ?.?/ ???? ??? ?????????

    2. ???????? ???????? ( ???????? ?????????? ) Secondary (Biological ) Treatment ???? ???????? ???????? ????????? ?????????? ??????? ??? ??????? ????? ??? ???????? ????? ??????? ?? ????? ?????? ???? ????? ?? ?????? ??????? ??????? ???????? ??????? ????? ????? ????? ??? ????? ???????? ?????????? . ??????? ?? ??? ?????? ??????? ?? ??? ????? ?? 50% ?? ????? ??????? ????????? , ??? ?? ??? ???????? ?????? ???????? ?? ????? 40% , ???? ????? ??? ???? ?? ?????? ????? ??????? ????????? ?? ?????? ??????? ????????? ??? ???? ??????? ????? ???? ?????? ??????? ???? ???? ??? ?????? ????? ???????? ?????????? ?? ??? ?????? ??????? ?? ?? ????? (20- 25) % ?? ???? ?????? ??????? ??????? ????????? ?????????? ?? ????? ????? ????? ????? ???????? ??????? ???? ?????? ??????? ??????? ???????? ????.

    3. ???? ???????? ????? ??????? ?? ?????? ???????? ???????? Activity of Microorganisms in the Aerobic Treatment ?????? ???????? ????? ??????? ????? ?????? ?? ???? ????? ?????, ????? ?????? ??????? ????? ???? ???????? ?????? ?? ???? ???? ?????? ????? . ??????? ???? ???? ?? ??? ????? ???????? ????? ??????? : ???? ???????. ( 5 35 ) ???? ?????. ???????? ?????? ?? ?????? (DO). ???? ??????????? (pH). ( 6.50- 8.50 ) ????? ??????? ???? ????? ????? ??? ????????. (C/N/P) Carbon, Nitrogen, Phosphorus. ???? ???? ???? ??? ????? ??? ???? ???????? ???????.

    4. ??? ???????? ?????????? Methods of Biological Treatment ???? ??? ????? ???????? ?????????? ?????? ?? ??? ?????? ?????? ?????? ??????? ??? : ???????? ?????????? (?????? ?????) Trickling Filters.. ????? ?????? ??????? Activated Sludge Tanks ??????? ??????? ?? ??????? Extended aeration Tanks. ??????? ??????? ?????? ??????? (Oxidation Ditch) Extended aeration

    5. ????:???????? ?????????? Trickling Filters ????? ???? Biological filter ?? ???? Aerobic fixed film reactor ????? ??? ??????? ?? ????? ???? ???? ?? ???????? ??????? ?? ????? ?????, ????? ??? ??????? ?????? ?? ??? ????? ?? ??????? ?????? ?????? ????? ???? ?????? ?????? ???? ?? ????????? ?? ????? ?? ???????? ????? ?????? ????? ??? ?????? (fixed film media) ??? ??? ??????? ??? ??????? ?? ?????? ???????? ?? ??? 1910??????? ?????? ??? ????. ????? ????? ??????? ??? ????? ?????? ?????? ?????? ????? ???? ????? ????? ?????? ??????? ????? ?????? ?? ?????? ????? ??? ??? ?????? ?????? ????? ????? ?? ??????? ?????? ??? ???? ??? ?????? ???? ??????, ?????? ??? ??????? ?????????? ???????? ??????? ??? ???????? ????????? ????????? ????????? ??????. ?????? ?????? ?????? ??? ??? ?????? ???? ????? ??? ??? ?????.

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