| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To simply perform the supply control of raw water, a digestion liquid and sludge in performing an efficient treatment by improving the sedimentation properties and the dehydration properties of sludge in a solid-liquid separation process of anaerobic digestion sludge in an anaerobic digestion apparatus for reducing the volume of raw water containing an organic waste solution by anaerobic treatment. <P>SOLUTION: The anaerobic digestion apparatus is equipped with a storage tank, an anaerobic digestion tank, raw water supply means, a solid-liquid separation means of the digestion liquid, a digestion liquid supply means for supplying the digestion liquid to the solid-liquid separation means, a sludge return means for returning the sludge separated by the solid-liquid separation means to the anaerobic digestion tank and a bypass means for supplying a part of raw water to the solid-liquid separation means while bypassing the anaerobic digestion tank and provided with a storage tank liquid level meter for detecting at least the high and low levels of the liquid in the storage tank, a digestion tank liquid level meter for detecting at least the high and low levels of the liquid in the anaerobic digestion tank and a control means for receiving the liquid level signals of the storage tank liquid level meter and the digestion tank liquid level meter to control the operation/stop of the supply means, the bypass means, the digestion liquid supply means and the solid-liquid separation means. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
