1Ecz3)=CECBl!(b55!91p!A1mDDSystem pressuresOperating point of air compressorp = 650 mbar gaugePiping p = 25 mbar Piping p = 20 mbarAerators i.e. p = 20 + 80 mbarVACOMASSp = 5 mbar( 10 mbar according to ATV)Injection depth 5mp = 500 mbarptotal= pii = 1n40d.b5dd.4167%8%11%6%5%3%Biological treatment Flocculation / FiltrationSludge treatment Infrastructure, miscellaneousWaste water conveying Mechanical treatmentPower consumption in sewage plants42Aeration - The big consumer ! 2/3 of the power in a sewage plant is required in order to supply air into activated sludge basins Aeration is the major individual consumerof electrical energy in sewage plantsde1 =edHe2 Hqe4344bT|bsb9vbAW(bbb5dlv45l 1.5mm 2 3mmv 15mm 0.1mm4647484950d!51d!b_d!5253#JP-BDd#JP-BDd54#JP-BDd#JP-BDd55#JP-BDd#JP-BDd56VV1.!4TP=A8V7A(a 2.!HiA8_b7b 3.!HubbVrq|%? ,1bT T57 ,5859!?S1!?1SMq NH0-I ? rqhL8 I?.qLH0L8I q YVdMA9s1b60!?1pl NNIvNNI 8NwTT61TwTT62TTwwz1B 5j10 ZTK nb1wzr1B 1j2b2fVsMww63wT641ZsyTyT656667!?kkobkHq/kD3PTT&.DLJOOFZZE68bkKYZE4;)hbFyhVVoTb4bV99.,-B.qb69BHBHF/B40H$P$MTb4QPk( ivt,H7S7S6BHWWi|( QHaaqbbkTs,-Bp.qrqVT ()/OLaSOOddtK =sV( )ln lnSO O SO LaK t =tMO5T5MZBL|q,-Bb9VLp,-Bnmbbk70Ts S 20HVNTb1() ( )20201.024tLa t LKK=760 /SOSOp S2vYVNTbbk2(/)La SOOC K V kgO h= V=q9kW V A =qqy rq Qrq!rq0$LH0I=qL8rqLH0,8IS.q,-B5TP :mgO2/LhS.q?YVdMA9s1bq71Hq/kdAHWMbd()OLaSO LaOdKrKdt =T5sw0iNH- S3qNH02-I AHW7Mb( )()0/La swO OLa swO OKrKr =Hq/kS72D3PTT&.DLJOOFZZEwTVAqZEw.qbC6.qVqTbC6mUM)V.qzAqbVnpE5EUb