| 摘要 |
PROBLEM TO BE SOLVED: To provide a hollow fiber membrane module and a washing method thereof which can continue the operation without reducing prolonged filtration performance, while obtaining a cleaning effect over the whole length direction of the hollow fiber membrane.SOLUTION: The hollow fiber membrane module includes a cylindrical case 3 which stored the hollow fiber membrane bunches which consist of a lot of the hollow fiber membrane 2, a top resin bonded part 4 in which a top surface of the hollow fiber membrane bunches adhesively fixes at an open state, a bottom resin bonded part 5 in which a bottom surface of the hollow fiber membrane bunches adhesively fixes at an open state, a filtration room 6, an upper water collecting room 7, a lower water collecting room 8, a drain room 9, a hollow tube 10, a raw water supply nozzle N1 which is prepared on a perimeter part of the cylindrical case 3 to communicate with the filtration room 6, a discharge nozzle N2 which is prepared on a perimeter part of the cylindrical case 3 to communicate with the filtration room 6, an upper filtrate water nozzle N3 which communicates with the upper water collecting room 7, a lower washing nozzle N4 which is prepared on a perimeter part of the cylindrical case 3 to communicate with the lower water collecting room 8, and a drain nozzle N5 which communicates with the drain room 9. |
