METHOD AND APPARATUS FOR TREATING ORGANIC WASTEWATER
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United States of America Patent
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Issued Date -
Oct 3, 2013
app pub date -
Dec 16, 2011
filing date -
Jan 5, 2011
priority date (Note) -
Abandoned
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Abstract
[Object] In relation to the treatment of organic wastewater in which organic wastewater is separated from biosludge by solid liquid separation using a separation membrane and the permeate water is subjected to RO membrane separation treatment and further in which normal solid liquid separation treatment is suspended and the membrane is cleaned by passing a cleaning liquid through the membrane from the permeate water side to the concentrated water side, the invention prevents a decrease in the flux of RO membranes due to TOC components eluted from the sludge during membrane cleaning and thereby reduces the frequency of chemical cleaning of the RO membranes as well as increases water recovery rate, thus allowing the treatment to be performed stably and efficiently.
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