Patent ID: 8192259

Claim:
A ventilation system of a sludge receiving facility in which an upper structure and a lower structure are constructed, the upper and lower structures having respective inner spaces communicating with each other with a running surface of transportation means as a boundary, in which a gate having opening/closing means is provided in a wall of the upper structure, in which a sludge tank having a sludge charging port configured to be opened on the running surface and configured to be provided with closing means in an openable and closable manner is provided in the lower structure, and in which a partition wall is provided in the upper structure, the partition wall being configured to partition a carrying-in space from the inner space of the upper structure, the carrying-in space ranging from the gate to the sludge charging port, the ventilation system of the sludge receiving facility comprising: outside air blowing means configured to continuously and forcibly feed outside air to the inner space of the lower structure from a bottom part of the lower structure; air circulating means configured to enable the inner space of the upper structure and the carrying-in space to communicate with each other by moving air through the partition wall; first exhausting means configured to exhaust air in the carrying-in space from an upper part of the carrying-in space; second exhausting means provided in a position facing the sludge charging port of the carrying-in space and configured to exhaust air above the sludge charging port; and third exhausting means configured to exhaust air in the sludge tank, wherein opening/closing means are provided in each of the circulating means, the first exhausting means, the second exhausting means, and the third exhausting means.