Private sewage system
专利汇可以提供Private sewage system专利检索，专利查询，专利分析的服务。并且PURPOSE: To maintain the cleaning function of a private sewage system in the optimum conditions all the time independently of the various alteration of the environmental conditions by adjusting the re-circulating amount from an aerobic treatment compartment to an anaerobic treatment compartment.
CONSTITUTION: A pump P
2 for adjusting the re-circulating amount is installed in the joint part of a treated water sucking pipe 14 and a returning pipe 14b. The pump P
2 is a pump which is able to vary the flowing amount and driven without stages by a stepping motor M
2 . The motor N
2 and the pump P
1 are connected with an output interface of a controlling apparatus 79. Meanwhile, various kinds of sensors to detect the environmental conditions, such as an ambient temperature sensor 80, a water temperature sensor 81, a nitrate/nitrite ion sensor 84, ammonium ion sensors 85, 86, pH sensors 87, 88, etc. are connected with the controlling apparatus 79. According to the outputs of the detecting sensors, the frequency of the pulsed voltage to be sent to the motor M
2 is changed and the rotary frequency of the motor M
2 is changed without stages and thus the re-circulating amount of the aerobically treated water is automatically controlled by the pump P
2 .
COPYRIGHT: (C)1992,JPO&Japio，下面是Private sewage system专利的具体信息内容。
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