| 摘要 |
<p>PURPOSE:To save heating cost of a cattle barn and promote putrefaction of waste water of the cattle barn by feeding a putrefied high temperature aeration liquid obtained by putrefying the waste water of the cattle barn to a heat exchanger using a specific method and simultaneously returning the aeration liquid to an aeration tank and circulating the aeration liquid. CONSTITUTION:A closed precipitation tank 16 is provided so as to communicate to a putrefying aeration tank 7 in which waste water discharged from a cattle barn is aerated and putrefied. Then a supernatant putrefied aeration liquid is fed to a heat exchanger for heating the cattle barn by a pump 18, etc., and the heat generated by the putrefied aeration liquid is released from the above- mentioned heat exchanger. Finally, the putrefied aeration liquid passing through the heat exchanger is returned to the aeration tank 7 and circulated.</p> |
