The Ineffectiveness of Water Splash on Paddlewheel Aerator

International Conference on Sustainable Energy and Green Technology 2018

能源学;生态环境科学

Bahri, Samsul^1 ; Jufriadi^1 ; Anwar, Hamdani^1

Mechanical Engineering Department, Lhokseumawe State Polytechnic, Lhokseumawe

24301, Indonesia^1

关键词: Aeration efficiencies;    Forward-and-backward;    ineffectiveness;    Intensive aquacultures;    Low dissolved oxygen;    Paddlewheel aerators;    volume;    Water splash;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/268/1/012162/pdf
DOI  :  10.1088/1755-1315/268/1/012162

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The successful of intensive aquaculture is strongly influenced by the ability of the farmers to overcome the deterioration of water quality. The problem is low dissolved oxygen through aeration process. The aerator device which widely used in pond farming is paddle wheel aerator because it is the best aerator in aeration mechanism and usable driven power. However, the paddlewheel has a slow aeration rate resulting in low aeration efficiency. The problem is caused by the backward water splash ineffectively. The backward water of the paddlewheel that is already aerated, but it is splashed again so it wastes the power. However, only the forward splash is effectively. The aim of this study was to determine the ineffectiveness of paddlewheel aerator based on the backward water splash. The paddlewheel used an 1 phase motor, 1 hp power, 1400 rpm motor speed, and 2 pieces of wheels. The treatment was carried out by varying the blade of 65, 85, and 105 mm submerged. The test was done by collecting the forward and backward water splash and calculating its volume. The normal position of the float on the blade submerged by 85 mm was obtained that the forward and backward splash volume of water was 17.99 and 13.74 m3/hour. Only 56.70% the effectiveness of the water splash compared to 43.30% the backward water splash. In fact, the forward splash coverage volume of water was 47.83% compared to the forward was 52.17%. This result shown that the water splash of paddlewheel aerator was not effective, so the backward water splash need to optimize to the effectiveness of water splash.