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Dissolved air flotation machine
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5000 USD
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Dissolved air flotation (DAF) is an environmentally friendly device that utilizes pressurized dissolved air and microbubble release principles to efficiently separate suspended solids, grease, and some dissolved pollutants from wastewater.

价格根据水质特点，按照设备的具体尺寸和参数进行定制。

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Shandong Wanzeshengshi Environmental Protection Technology Co., Ltd.
Shandong, China
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首先，一部分处理后的清水（约占处理水总量的20%～50%）经加压后，通过回流泵送入溶气罐，同时压缩空气压缩机向罐内输送压缩空气。在0.3～0.6 MPa的高压环境下，空气溶解于水中，形成高压溶气水。该高压溶气水通过溶气释放装置进入浮选罐的接触区，压力在此迅速降至大气压，空气以直径约20～40微米的微小气泡形式析出。待处理的废水与接触区的溶气水混合，微气泡相互碰撞并附着于悬浮颗粒上，形成浮选物料。混合物进入分离区后，浮选物料在浮力作用下上升到水面，形成浮渣层，而清水通过底部收集管排出，浮渣被刮入浮渣槽，并由刮渣机排出。

结构组成：溶气系统由溶气罐、空气压缩机和增压泵组成。溶气罐是核心压力容器，通常配备填料或喷射器以提高溶气效率。空气压缩机提供压缩空气，而增压泵将水输送到溶气罐。

释放系统：主要部件是溶解空气释放装置，可瞬间对溶解空气水进行减压并释放空气，形成微气泡。

浮选池：包括接触区、分离区和清水区。接触区确保溶解空气与水和废水充分混合；分离区实现固液分离；清水区收集处理后的水。

污泥刮除和排放系统：污泥刮除器将表面浮渣刮入浮渣槽，污泥排放管将分离区底部的污泥排放出去。

化学加药系统：包括溶解罐、搅拌器和计量泵，用于添加混凝剂和絮凝剂以增强吸附作用。

电气控制系统：用于自动控制设备运行，包括各种泵、空气压缩机、刮泥机等的启动、停止和联动。

污水处理厂：可用于预处理以去除漂浮物、油脂和一些悬浮固体；也可用于高级处理以进一步提高出水水质。

工业废水处理：广泛应用于食品、印染、电镀、化工等行业，有效去除废水中的有机物、染料颗粒、重金属离子等污染物。

其他领域：在自来水厂中，可用于原水净化，去除藻类和浮游生物；在水产养殖业中，可用于改善养殖池塘的水质。

高效：微气泡与杂质的接触面积大，因此具有优异的粘附性和快速的固液分离能力，从而缩短废水处理时间。

占地面积小：该设备结构紧凑，与传统沉淀方法相比，所需空间更小，从而降低了建设成本。

适应性强：可通过调节溶解空气压力、溶解空气与水的比例以及试剂来适应水质和水量的变化。

运行成本低：能耗相对较低；主要动力设备由水泵和空气压缩机组成，维护简单，延长了使用寿命。

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