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Title:
PRESSURE DEHYDRATION DEVICE HAVING CONCENTRATION MECHANISM AND PRESSURE DEHYDRATION METHOD
Document Type and Number:
Japanese Patent JP2023090239
Kind Code:
A
Abstract:
To provide a pressure dehydration device having a concentration mechanism made by integrating a concentration mechanism on the front stage in a filter plate row forming a filtration chamber and a dehydration mechanism that is provided continuously to the concentration mechanism, and a pressure dehydration method.SOLUTION: A pressure dehydration device having a concentration mechanism comprises: a concentration mechanism 9 in which a filter material 22 is provided in a concentration filtration chamber 21 formed in a hollow shape on the front stage in a filter plate row forming a filtration chamber of the pressure dehydration device, and which supplies the liquid concentrate from a communication path 28 opening to one part of the concentration filtration chamber 21, performs solid-liquid separation by making the liquid content pass through the filter material 22 while making the liquid concentrate pass in parallel to the filter material 22, and discharges the concentrated sludge to the concentration filtration chamber 21 on the next stage from the communication path 28 opening at a symmetric position of the communication path 28; a dehydration mechanism 10 which is integrally provided continuously to the discharge side of the concentration mechanism 9 and performs solid-liquid separation by making the liquid content pass through the filter material 22 provided in a dehydration filtration chamber 23 between dehydration filter plates 12 capable of opening/closing the concentrated sludge via the communication path 28b; and a return pipe 16 which returns a portion of the concentrated sludge supplied to the dehydration mechanism 10 from the concentration mechanism 9 to a liquid concentrate storage tank 13. Consequently, a cake with a low moisture content can be obtained.SELECTED DRAWING: Figure 1

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Inventors:
NISHIHARA YASUAKI
Application Number:
JP2021205107A
Publication Date:
June 29, 2023
Filing Date:
December 17, 2021
Export Citation:
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Assignee:
ISHIGAKI CO LTD
International Classes:
B01D25/12; C02F11/121



 
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