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SECTION 5 - FILTER PRESS <br /> .uwe <br /> e✓nrt'r 5;1�•V!cf F� I F,76,nh- (Drcr6rm.7� <br /> rrr.rew ..e» <br /> eF(Jl/T V/FW <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. s 1/4 Turn. <br /> 25 <br />