公开(公告)号：US5006232A

公开(公告)日：1991-04-09

申请号：US458618

申请日：1990-01-22

申请人： Peter J. Lidgitt ,  Derek J. Freeman ,  Paul F. Cooper

发明人： Peter J. Lidgitt ,  Derek J. Freeman ,  Paul F. Cooper

IPC分类号： B63B29/16 ,  B63B17/00 ,  B63J4/00 ,  C02F1/52 ,  C02F3/00 ,  C02F3/12 ,  C02F9/00

CPC分类号： B63J4/004 ,  C02F3/1242 ,  C02F3/1263 ,  Y02W10/15

摘要： A sewage treatment plant for use aboard ship comprises a vacuum assisted fresh water flush system delivering sewage to a collection tank. Sewage is collected from the collection tank in batches for treatment. The sewage first enters a settlement tank and is then transferred to an aeration tank. After aeration, treated sewage is then transferred out in batches. The batch processing overcomes the difficulties of operating a continuous flow arrangement on a moving platform where liquid can move back and forth, which presents difficulties in controlling the level of biological activity. A controlled amount of sewage transferred to the aeration tank is diluted with grey water. A sludge storage tank is provided and suspended solids probes are provided in the aeration and settlement tanks such that sludge is automatically withdrawn from these tanks to the storage tank to maintain the level of suspended solids within predetermined limits. The sludge storage tank is provided with aerators and its temperature is controlled such that aerobic digestion renders the sludge inert. Small batches of aerated liquid are drawn from the aeration tank into a chlorination tank via a separation system at controlled intervals between successive sewage batch transfers from the collection tank to the aeration tank via the settling tank prior to discharge from the plant.

摘要翻译： PCT No.PCT / GB88 / 00434 Sec。 371日期1990年1月22日 102（e）日期1990年1月22日PCT提交1988年6月2日PCT公布。 出版物WO88 / 09740 日期为1988年12月15日。船上使用的污水处理厂包括将污水送至收集罐的真空辅助淡水冲洗系统。 分批收集污水进行污水处理。 污水首先进入沉淀池，然后转移到曝气池。 曝气后，经处理的污水分批输出。 批处理克服了在液体可以来回移动的移动平台上操作连续流动布置的困难，这在控制生物活性水平方面存在困难。 转移到曝气池中的受控量的污水用灰水稀释。 设置污泥储罐，并在曝气和沉淀池中提供悬浮固体探针，使污泥自动从这些罐中取出至储罐，以将悬浮物的含量保持在预定的限度内。 污泥储罐配有曝气器，其温度受到控制，好氧消化使污泥呈惰性。 在从工厂排放之前，小批量的充气液体通过分离系统以分级系统从控制的间隔从连续的收集罐到曝气池经由沉淀池经过污水批量传送从曝气池中抽出。