Effect of Tank Shape on Performance of Aeration Tank in Sewage Treatment
El Nadi, M.H.1, El Sergany F.A.G.2, El Hosseiny O.M3

1El Nadi, M.H.*, Professor of sanitary & Environmental Eng., Public Works Dept., Faculty of Eng., ASU, Cairo, Egypt.
2El Sergany, F.A.G., Associate prof. of Sanitary Eng., Civil Eng. Dept., HIT., 10th of Ramadan City, Egypt.
3El Hosseiny, O.M., Assistant prof. of Sanitary Eng., Civil Eng. Dept., CIC., New Cairo, Egypt

Manuscript received on November 14, 2019. | Revised Manuscript received on 24 November, 2019. | Manuscript published on December 10, 2019. | PP: 475-480 | Volume-9 Issue-2, December 2019. | Retrieval Number: B6447129219/2019©BEIESP | DOI: 10.35940/ijitee.B6447.129219
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: This Study Was Made To Study The Use Of Circular Aeration Tanks Instead Of Rectangular One In Wastewater Treatment Plants. The Study Covered The Effect Of Tank Geometric Shape On Action Stability, Effective Parameters Homogeneity And Treatment Efficiency Inside The Aeration Tank And Its Reflection On The Final Sedimentation Tank Performance. A Pilot Scale Was Erected In Balaqs Wastewater Treatment Plant Pilot Consists From Two Lines One Circular Aeration Tank Followed By Final Settling Tank And Second Rectangular Aeration Tank Followed By Final Settling Tank For Comparison Purpose Under The Same Conditions. The Samples Were Taken Continuously For 5 Weeks From The Inlet, Outlet For (Bod, & Tss) To Measure The Aeration Removal Efficiency. Also Measurements Inside Both Types Of Aeration Tanks To Determine The Parameters Of Temperature & Do Distribution And Stability In Different Depths And Sides Of Tank. Also The Consumed Power Had Been Measured. The Results Shows That The Circular Aeration Tank Achieved Better Stability Inside The Tank With Minimal Variation In Both Of Do And Temperature That Varied Widely In The Rectangular Tank Between Different Depths And Also Longitudinally And In Cross Section Directions That Affects Mainly On The Tank Efficiency And The Consumed Power Needed For Surface Aerators Operation. The Circular Safe About 50% Of The Consumed Power That Also Safe In The Construction And Operation Costs For Such Treatment. 
Keywords: Wastewater Treatment, Biological Treatment, Activated Sludge System, Aeration Tank, Factors Affecting Design, Tank Shape Effect.
Scope of the Article: Multi-Agent Systems