Development of Liquid Separator from Cow Dung -

Abstract

This research using the research and development method aimed to: 1) develop a liquid separator from cow dung, and 2) test and assess the liquid separator. The used tools were the liquid separator, the result recording table of testing the efficiencies and the quality assessment form. The research team designed and developed the liquid separator from cow dung using the process of mechanical development and the technological process concepts. After that, the liquid separator was tested for the efficiency and assessed for the quality from agricultural machinery experts in electrical system, animal husbandry and agricultural technology. The collected data were statistically analysed using percentage, mean and standard deviation.

          The research results found that:

          1) The liquid separator from cow dung could be used to manage wastes from the production processes of dairy and beef cattle, e.g. feeding waste, wet dung, urine and washing water, etc.

          2) The efficiencies of liquid separator from cow dung were as the followings.

              (1) At 1:1 ratio of cow dung to water, the average of total moisture contents after testing was 2.90%, the average of total weights after testing was 55.40 kg, the average of spent time was 11 min, and the average of sorting volume was 302.18 kg/hr.

              (2) At 2:3 ratio of cow dung to water, the average of total moisture contents after testing was 3.34%, the average of total weights after testing was 44.60 kg, the average of spent time was 8.40 min, and the average of sorting volume was 318.57 kg/hr.

              (3) At 3:2 ratio of cow dung to water, the average of total moisture contents after testing was 2.90%, the average of total weights after testing was 62.60 kg, the average of spent time was 15.20 min, and the average of sorting volume was 247.11 kg/hr.

            3) The quality assessment of liquid separator from cow dung from the experts was overall at the very good level with the mean of 4.67 and the standard deviation of 0.48.