Effect of suspended solids on fresh water fish and its removal from fish ponds | |
| Author | Piracha, Sikander Ali |
| Call Number | AIT RSPR no. AE-94-02 |
| Subject(s) | Fish ponds Fishes--Effect of sediments on |
| Note | Research study submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Agricultural Systems and Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Series Statement | Research studies project report ; no. AE-94-02 |
| Abstract | The possibility of reducing clay turbidity in fish ponds using cassava leaf slurry was examined through an experiment, the study comprised of two jar tests and two pond trials. Jar tests were conducted in circular glass jars (10 liter) using different concentrations of cassava leaves to decide optimum effective concentration causing maximum reduction in turbidity. In one jar test five different concentrations of cassava leaves were used, while in the other test a wide range of ten different concentrations of cassava leaves were used. In both the tests maximum reduction (50 % ) in turbidity was found at the concentration of llg/jar, which is equivalent to the loading rate of 3000 Kg/ha/week. In pond trial one cassava leaf slurry was applied to turbid pond water and its effects on clay turbidity was observed after a period of 3 days. In the second trial pond was fertilized after the application of slurry consecutively for two weeks, and its effect on turbidity and other water quality parameters such as pH, alkalinity etc was observed. Loading rate of cassava leaves was 3000 Kg/ha/week, whereas loading rate of nitrogen and phosphorus through fertilizer were 4.0 Kg/ha/day and 2.0 Kg/ha/day respectively in the second trial. An average reduction of 52 % was achieved in the clay turbidity in both the trials. No significant change in the water quality parameters was found within the trials except in turbidity and transparency. |
| Year | 1994 |
| Corresponding Series Added Entry | Asian Institute of Technology. Research studies project report ; no. AE-94-02 |
| Type | Research Study Project Report (RSPR) |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Yakupitiyage, Amararatne |
| Examination Committee(s) | Edwards, Peter;Lin, Chang Kwei;Szyper, James |
| Scholarship Donor(s) | Asian Development Bank |
| Degree | Research studies project report (M.Eng.) - Asian Institute of Technology, 1994 |