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SECTION 5 - FILTER PRESS <br /> •err P �Fr'f CCn ntb M) <br /> r 8 <br /> 1 <br /> i �I•. h��� `r � I Imo' I I y, �` <br /> <daTr_i_•N!4 F F.:fro fr �Orc tlrm�� (•err:♦-n c+'•� r�r+•—•..r...r r+r,a <br /> nr.ar...ev iu�owe•.+ <br /> �FtJr/r ViFW <br /> FIGURE 3-9 FILTER PRESS FLOW DIAGRAM <br /> 5 . 1 Operation When the air diagram Wilden pump at the <br /> bottom of the sludge thickener tank <br /> operates , the heavy metal wastewater <br /> flows from the bottom of the sludge <br /> thickener tank to the filter press . <br /> The filter press filters the heavy metal <br /> through the filter element and the <br /> wastewater free of heavy metal flows <br /> back to equalization tank A for <br /> pretreatment. <br /> 5 . 2 Maintenance Route Freguency: Weekly <br /> - Inspect and check ball shut-off <br /> valves, and filter press for leaks and <br /> damages . <br /> - Clean filter press. (FIGURE 3-9) <br /> 5 . 3 Filter Press Cleaning Procedure: <br /> A. To discharge the filter cake and <br /> clean the filter press. <br /> 1 .Close valve (A) before closing <br /> valves (E) and (F) . <br /> 2.To wash the cake. Open valve (C) <br /> slowly about halfway. x 1/4 Turn. <br /> 25 <br />