<p><span style="color: rgb; font-family: arial, 宋体, sans-serif; font-size: 14px; text-indent: 28px; background-color: rgb;">板框压滤机是**先应用于化工脱水的机械。虽然板框压滤机一般为间歇操作、基建设备投资较大、过滤能力也较低，但由于其具有过滤推动力大、滤饼的含固率高 lt;/span><a target="blank" style="color: rgb; text-decoration: none; font-family: arial, 宋体, sans-serif; font-size: 14px; text-indent: 28px; white-space: normal; background-color: rgb;">滤液</a><span style="color: rgb; font-family: arial, 宋体, sans-serif; font-size: 14px; text-indent: 28px; background-color: rgb;">清澈、固体回收率高、调理药品消耗量少等优点，在一些小型污水厂仍被广泛应用 lt;/span></p><p> 污泥经浓缩、消化后，尚有约9597的含水率，体积仍很大。污泥脱水可进一步去除污泥中的空隙水和毛细水，减少其体积。经过脱水处理，污泥含水率能降低到7080，其体积为原体积的1/101/4，有利于后续运输和处理。污泥机械脱水方法有过滤脱水、离心脱水和压榨式脱水等，过滤脱水又有真空过滤与压力过滤；离心脱水是用离心机进行脱水；压榨式脱水是用螺旋压榨机或滚压机进行脱水。常用的是压力过滤和离心脱水方法。污泥过滤脱水是以过滤介质两面的压力差作为推动力，使污泥水分被强制通过过滤介质形成滤液，而固体颗粒被截留在介质上形成滤饼，从而达到污泥脱水的目的。板框压滤机是**先应用于化工脱水的机械。虽然板框压滤机一般为间歇操作、基建设备投资较大、过滤能力也较低，但由于其具有过滤推动力大、滤饼的含固率高、滤液清澈、固体回收率高、调理药品消耗量上等优点，在一些小型污水厂仍被广泛应用 lt;span class="sup--normal" style="font-size: 10.5px; line-height: 0; position: relative; vertical-align: baseline; top: -0.5em; margin-left: 2px; color: rgb; cursor: pointer; padding: 0px 2px;"> </span><br/></p><p><br/></p><p> 板框压滤机的滤板、滤框和滤布的构造示见图1，其中为滤框，为滤板，为滤布。板框压滤机构造见图2，板框压滤机及附属设备布置方式见图3，除板框压滤机主机外，还有进泥系统、投药系统和压缩空气系统 lt;span class="sup--normal" style="font-size: 10.5px; line-height: 0; position: relative; vertical-align: baseline; top: -0.5em; margin-left: 2px; color: rgb; cursor: pointer; padding: 0px 2px;"> </span><a style="color: rgb;"></a></p><p><a class="image-link" target="blank" title="图1 板框压滤机的滤板、滤框和滤布" style="color: rgb; text-decoration: none; display: block; width: 250px; height: 79px;"><img class="" src="http://img2.912688.com//b8a784dd-4da3-488f-87f6-c236e6876e2a.png" alt="图1 板框压滤机的滤板、滤框和滤布"/></a><span class="description" style="display: block; color: rgb; text-align: left; font-size: 12px; text-indent: 0px; font-family: 宋体; word-wrap: break-word; word-break: break-all; line-height: 15px; padding: 8px 7px; min-height: 12px; border-top: 1px solid rgb;">图1 板框压滤机的滤板、滤框和滤布</span></p><p><a class="image-link" target="blank" title="图2板框压滤机结构及板框结构示意图" style="color: rgb; text-decoration: none; display: block; width: 250px; height: 109px;"><img class="" src="http://img3.912688.com//c0442a17-ffbb-4caa-9a27-a37950904c2a.png" alt="图2板框压滤机结构及板框结构示意图"/></a><span class="description" style="display: block; color: rgb; text-align: left; font-size: 12px; text-indent: 0px; font-family: 宋体; word-wrap: break-word; word-break: break-all; line-height: 15px; padding: 8px 7px; min-height: 12px; border-top: 1px solid rgb;">图2板框压滤机结构及板框结构示意图</span></p><p><a class="image-link" target="blank" title="图3 板框压滤机结构及附属设备的布置方式" style="color: rgb; text-decoration: none; display: block; width: 250px; height: 124px;"><img class="" src="http://img0.912688.com//e73fcb9c-eba2-4b50-b39d-5e9ebde7eba1.png" alt="图3 板框压滤机结构及附属设备的布置方式"/></a><span class="description" style="display: block; color: rgb; text-align: left; font-size: 12px; text-indent: 0px; font-family: 宋体; word-wrap: break-word; word-break: break-all; line-height: 15px; padding: 8px 7px; min-height: 12px; border-top: 1px solid rgb;">图3 板框压滤机结构及附属设备的布置方式</span></p><p><a class="lemma-anchor para-title" style="color: rgb; position: absolute; top: -50px;"></a><a class="lemma-anchor " style="color: rgb; position: absolute; top: -50px;"></a><a class="lemma-anchor " style="color: rgb; position: absolute; top: -50px;"></a></p><h2 class="title-text" style="margin: 0px; padding: 0px 8px 0px 18px; font-size: 22px; color: rgb; float: left; line-height: 24px; font-weight: 400; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">脱水过程</h2><p><br/></p><p><br/></p><p> 板与框相间排列而成，在滤板的两侧覆有滤布，用压紧装置把板与框压紧，即在板与框之间构成压滤室。在板与框的上端中间相同部位开有小孔，压紧后成为一条通道，加压到0.20.4MPa的<a target="blank" style="color: rgb;">污泥</a>，由该通道进入压滤室，滤板的表面刻有沟槽，下端钻有供滤液排出的孔道，滤液在压力下，通过滤布、沿沟槽与孔道排出滤机，使污泥脱水。**已开发出自动化的板框压滤机。板框压滤机比真空过滤机能承受**的污泥比阻，这样就可降低调理剂的消耗量，可使用较便宜的药剂。当污泥比阻为5×10<span class="normal" style="font-size: 10.5px; line-height: 0; position: relative; vertical-align: baseline; top: -0.5em; margin-left: 2px; cursor: default; padding: 0px 2px;">11</span>8×10<span class="normal" style="font-size: 10.5px; line-height: 0; position: relative; vertical-align: baseline; top: -0.5em; margin-left: 2px; cursor: default; padding: 0px 2px;">12</span>m/kg时，可以不经过预先调理而直接进行过滤。板框压滤机其泥饼产率和泥饼含水率，应根据试验资料或类似运行经验确定。泥饼含水率一般可为7580 lt;span class="sup--normal" style="font-size: 10.5px; line-height: 0; position: relative; vertical-align: baseline; top: -0.5em; margin-left: 2px; color: rgb; cursor: pointer; padding: 0px 2px;"> </span><br/></p><p><a style="color: rgb;"></a></p><p><a class="lemma-anchor para-title" style="color: rgb; position: absolute; top: -50px;"></a><a class="lemma-anchor " style="color: rgb; position: absolute; top: -50px;"></a><a class="lemma-anchor " style="color: rgb; position: absolute; top: -50px;"></a></p><p><a class="edit-icon j-edit-link" style="color: rgb; display: block; float: right; height: 22px; line-height: 22px; padding-left: 24px; font-size: 12px; font-family: SimSun; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span class="cmn-icon wiki-lemma-icons wiki-lemma-iconsedit-lemma" style="font-family: baikeFontlayout; -webkit-font-smoothing: antialiased; speak: none; line-height: 1; outline: 0px; margin: 0px 3px 0px 0px; vertical-align: text-bottom; color: rgb;"></span><span style="font-family: sans-serif; font-size: 16px;"><br/><br/></span></a><a class="edit-icon j-edit-link" style="display: block; float: right; height: 22px; line-height: 22px; padding-left: 24px; font-family: SimSun; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span style="font-family: sans-serif;"><br/></span></a><a class="edit-icon j-edit-link" style="display: block; float: right; height: 22px; line-height: 22px; padding-left: 24px; font-family: SimSun; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span style="font-family: sans-serif;"><br/></span></a><a class="edit-icon j-edit-link" style="display: block; float: right; height: 22px; line-height: 22px; padding-left: 24px; font-family: SimSun; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span style="font-family: sans-serif;"><br/></span></a><a class="edit-icon j-edit-link" style="display: block; float: right; height: 22px; line-height: 22px; padding-left: 24px; font-family: SimSun; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span style="font-family: sans-serif;"><br/></span></a><a class="edit-icon j-edit-link" style="display: block; 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background-origin: initial; background-clip: initial;"><span style="font-family: sans-serif;"><br/></span></a><a class="edit-icon j-edit-link" style="display: block; float: right; height: 22px; line-height: 22px; padding-left: 24px; font-family: SimSun; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span style="font-family: sans-serif;"><br/></span></a><a class="edit-icon j-edit-link" style="display: block; float: right; height: 22px; line-height: 22px; padding-left: 24px; font-family: SimSun; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span style="font-family: sans-serif;"><br/></span></a><a class="edit-icon j-edit-link" style="display: block; float: right; height: 22px; line-height: 22px; padding-left: 24px; font-family: SimSun; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span style="font-family: sans-serif;"><br/></span></a><a class="edit-icon j-edit-link" style="display: block; float: right; height: 22px; line-height: 22px; padding-left: 24px; font-family: SimSun; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span style="font-family: sans-serif;"><br/></span></a><a class="edit-icon j-edit-link" style="display: block; float: right; height: 22px; line-height: 22px; padding-left: 24px; font-family: SimSun; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span style="font-family: sans-serif;"><br/></span></a><a class="edit-icon j-edit-link" style="display: block; float: right; height: 22px; line-height: 22px; padding-left: 24px; font-family: SimSun; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span style="font-family: sans-serif;"><br/></span></a><a class="edit-icon j-edit-link" style="display: block; float: right; height: 22px; line-height: 22px; padding-left: 24px; font-family: SimSun; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span style="font-family: sans-serif;"><br/></span></a><a class="edit-icon j-edit-link" style="display: block; float: right; height: 22px; line-height: 22px; padding-left: 24px; font-family: SimSun; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span style="font-family: sans-serif;"><br/></span></a><a class="edit-icon j-edit-link" style="display: block; float: right; height: 22px; line-height: 22px; padding-left: 24px; font-family: SimSun; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span style="font-family: sans-serif;"><br/></span></a><a class="edit-icon j-edit-link" style="display: block; float: right; height: 22px; line-height: 22px; padding-left: 24px; font-family: SimSun; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span style="font-family: sans-serif;"><br/></span></a><a class="edit-icon j-edit-link" style="display: block; float: right; height: 22px; line-height: 22px; padding-left: 24px; font-family: SimSun; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span style="font-family: sans-serif;"><br/></span></a><a class="edit-icon j-edit-link" style="display: block; float: right; height: 22px; line-height: 22px; padding-left: 24px; font-family: SimSun; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span style="font-family: sans-serif;"><br/></span></a></p><p><br/></p><p>过滤压力为0.40.6MPa lt;/p><p>过滤周期不大于4h lt;/p><p>每台过滤机可设污泥压入泵一台，<a target="blank" style="color: rgb; text-decoration: none;">泵</a>宜选用柱塞式 lt;/p><p>压缩空气量为每1m<span class="normal" style="font-size: 10.5px; line-height: 0; position: relative; vertical-align: baseline; top: -0.5em; margin-left: 2px; cursor: default; padding: 0px 2px;">3</span>滤室不小于2m<span class="normal" style="font-size: 10.5px; line-height: 0; position: relative; vertical-align: baseline; top: -0.5em; margin-left: 2px; cursor: default; padding: 0px 2px;">3</span>/min lt;/p><p>板框脱水应注意良好的通风、高压冲洗系统、调理前污泥磨碎机设置、压滤后泥饼破碎机设置等 lt;/p><p>压滤脱水的设计方法，主要是根据污泥处理量、脱水污泥浓度、压滤机工作程序、压滤压力等计算泥饼产率、所需压滤机面积及台数 lt;span class="sup--normal" style="font-size: 10.5px; line-height: 0; position: relative; vertical-align: baseline; top: -0.5em; margin-left: 2px; color: rgb; cursor: pointer; padding: 0px 2px;"> </span><a style="color: rgb;"></a></p><p>计算选型</p><p>板框压滤机的脱水面积按下式计算 lt;span class="sup--normal" style="font-size: 10.5px; line-height: 0; position: relative; vertical-align: baseline; top: -0.5em; margin-left: 2px; color: rgb; cursor: pointer; padding: 0px 2px;"> </span><a style="color: rgb;"></a></p><p><img alt="" title="" height="39" width="63" src="http://img3.912688.com//fafec-afdb-72688e58f295.png"/></p><p>式中 A压滤脱水面积，m<span class="normal" style="font-size: 10.5px; line-height: 0; position: relative; vertical-align: baseline; top: -0.5em; margin-left: 2px; cursor: default; padding: 0px 2px;">2</span> lt;/p><p>Q<span style="font-size: 10.5px; line-height: 0; position: relative; vertical-align: baseline; bottom: -0.25em;">S</span>每次脱水的污泥量，m<span class="normal" style="font-size: 10.5px; line-height: 0; position: relative; vertical-align: baseline; top: -0.5em; margin-left: 2px; cursor: default; padding: 0px 2px;">3</span> lt;/p><p>q脱水负荷，m<span class="normal" style="font-size: 10.5px; line-height: 0; position: relative; vertical-align: baseline; top: -0.5em; margin-left: 2px; cursor: default; padding: 0px 2px;">3</span>/ lt;/p><p>t每次脱水时间，h lt;/p><p>根据计算所得的压滤脱水面积A进行板框压滤机选型。至少选用23台，并在脱水车间布置全套设备 lt;span class="sup--normal" style="font-size: 10.5px; line-height: 0; position: relative; vertical-align: baseline; top: -0.5em; margin-left: 2px; color: rgb; cursor: pointer; padding: 0px 2px;"> </span><a style="color: rgb;"></a></p><p><a class="lemma-anchor a" style="color: rgb; position: absolute; top: -50px;"></a></p><p><br/></p><p><span class="sup--normal" style="font-size: 10.5px; line-height: 0; position: relative; vertical-align: baseline; top: -0.5em; margin-left: 2px; color: rgb; cursor: pointer; padding: 0px 2px; font-family: arial, 宋体, sans-serif; text-indent: 28px; background-color: rgb;"></span><br/></p>
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