| 摘要 |
<P>PROBLEM TO BE SOLVED: To realize a water treatment system which can cope with various variations at a lowered cost and has convenient and high value-added functions by designing a pretreatment control system and a feed-water treatment control system separately and independently and making both systems cooperate with each other. <P>SOLUTION: A control block 8 is fractionated into a first control part 29 for controlling respective components (a raw water pump 1, an iron and manganese filter 2, a water softener 3, a sodium hypochlorite injector 11, and a residual chlorine concentration monitor 12) of a pretreatment block 4, and a second control block 31 for controlling respective components (an RO device 5, a treated water tank 6, a reducing agent injector 17, a raw water hardness monitor 18, a flowmeter 19, and a sodium hypochlorite injector 20) of a feed-water treatment block 7. The first control part 29 sends an operation allowing signal 33 and an abnormality detection signal 34 to the second control part 31, and the second control part 31 sends a feed-water request signal 32 to the first control part 29. <P>COPYRIGHT: (C)2009,JPO&INPIT |
