| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent activity deterioration of microbes in a treatment tank in cold season by installing a heat radiator in the inside of an aeration tank where urine of livestock is decomposed and treatedby the microbes, connecting a water heater with the heat radiator through a circulation route, and maintain the temperature of the urine of livestock in the aeration tank by circulating hot water through the circulation route. SOLUTION: Of an aeration tank 1 in which urine of livestock is decomposed and treated by aerobic microbes, the upstream side is connected with a primarily stoirring tank 2 to store urine of livestock and the downstream side is connected with a secondarily storing tank 7 and in the aeration tank 1, a storing apparatus 10 to be joined with a motive force taking put axis 16 is a tractor 15 through a universal joint 14 is installed. In this case, a heat maintaining apparatus is installed to keep the temperature of the urine in the aeration tank 1 and keep the activity of microbes. This heat maintaining apparatus is constituted of a heat radiator 30 installed in the inside of the aeration tank 1, a water heater 31, and a circulation route 32 connecting the radiator 30 and the water heater 31 and in the case the temperature difference of the water heater 31 and the aeration tank 1 becomes wider than a set value, the heat maintaing apparatus is so controlled as to automatically supply hot water to the heat radiator 30 from the water heater 31.</p> |
