首页> 外文会议>AFS 2008 annual conference amp; exposition: infrastructure, sustainability amp; testing management conference: technical sessions >THE IMPORTANCE OF PROPER FILTER CLOTH DRAINAGE IN MUNICIPAL OTHER LARGE-SCALE FILTER PRESS SYSTEMS
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THE IMPORTANCE OF PROPER FILTER CLOTH DRAINAGE IN MUNICIPAL OTHER LARGE-SCALE FILTER PRESS SYSTEMS

机译:在市政及其他大型压滤机压榨系统中正确过滤滤布的重要性

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摘要

Dewatering of municipal and industrial biosludges is commonly done in standard recessedrn(fixed volume) filter presses at generally 15 bar (225 psig) pressure. Gentle, variable speedrnpumps are used to fill the fixed volume press at high flow; and then turned down at higherrnpressure to deliquor the formed cakes in order to achieve high cake solids. The initial part of thisrndewatering cycle is generally prone to allow solids bleed into the filtrate particularly since fairlyrnopen monofilament cloths are used. As a result, solids accumulate in the plate drainage area andrnrestricts flow over time. This paper will discuss how proper filtrate drainage can eliminate thisrnproblem and result in longer cloth life.
机译:市政和工业生物污泥的脱水通常在标准的嵌入式(固定容积)压滤机中进行,压力通常为15 bar(225 psig)。温和的变速泵用于在大流量下填充固定体积的压力机;然后在较高压力下调低水分以使形成的饼脱水,从而获得高饼固体。该脱水循环的开始部分通常倾向于使固体渗入滤液中,特别是因为使用了相当开放的单丝布。结果,固体堆积在板的排水区域中,并且随着时间的流逝限制了流动。本文将讨论如何通过适当的滤液排放来消除该问题并延长布的使用寿命。

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