EFFECT OF MICRO BUBBLES AERATION METHOD ON WATER TURBIDITY AT AQUACULTURE EARTHEN PONDS UNDER DIFFERENT OPERATIONAL CONDITIONS
Abstract: This study discusses the effect of operational variables at tube diffusion aeration method on turbidity values corresponding to secchi disk clarity. An experiment established at an earthen aquaculture private farm in kafrelshikh government, Egypt. Experimental variables under study were five air flow rates (0.1, 0.18, 0.23, 0.28 and 0.33 m3.h-1), three tube wall thickness (4, 6 and 7 mm), three tube depth from water surface (0.3, 0.50 and 0.70 mm) and two design shapes (circular and Longitudinal). Materials and instruments were circular tube holder, an electric single-phase compressor, three models of rubber diffusion tubes (D25-4, D25-6 and D25-7), portable galvanic dissolved oxygen meter, secchi disk, digital LCD anemometer and thermometer and digital vernier caliper. The lowest value for secchi disk clarity were 7 cm obtained at operational conditions of 0.33 m3.h-1 air flow rate, 0.70 mm depth from water surface, 4 mm thickness of tube wall and circular shape design. While, the highest value for secchi disk clarity were 41 cm obtained at operational conditions of 0.10 m3.h-1 air flow rate, 0.30 mm depth from water surface, 7 mm thickness of tube wall and Longitudinal shape design. The permissible variables limits were (0.1, 0.18 and 0.23 m3.h-1) for air flow rate, (4, 6 and 7 mm) for tube wall thickness, (0.3, 0.50 and 0.70 mm) for tube depth from water surface and both of (circular and Longitudinal) design shapes.
Publication year 2021
Organization Name
serial title SCIENTIFIC PAPERS SERIES MANAGEMENT, ECONOMIC ENGINEERING IN AGRICULTURE AND RURAL DEVELOPMENT
Author(s) from ARC
External authors (outside ARC)
    طارق فؤاد
    عبد الحميد الحنفي
Publication Type Journal
↑