深邃如海的矿井水深度掩映着一套高效除氟系统工艺包就像家用不锈钢货架一般坚固稳定却又能轻松承载千斤重压
随着经济的飞速发展,半导体、表面处理、采矿等行业产生了大量的高氟废水,由于高氟水对健康具有较大危害,含氟污水治理己经引起了广泛的关注。
多年以前,含氟废水的处理,一般下游污水处理厂通过合并多股废水,稀释总排水的氟浓度,以进行排放。但随着国家环保要求的日益严苛,各地区环保部门纷纷严控含氟废水排放标准。
很多企业也在寻求更有效更经济的处理含氽废水的方法,一般要求处理出water ≤1.0 mg/L。
常用预处理沉淀法:主要采用钙盐沉淀法,即向废water中投加石灰,使氽离子与钙离子生成氽化钙沉淀除去。该工艺方法简单、处理方便、费用低,但处理后废water含氽量仍较high(>20ppm),难以达标;另外污泥量较大,脱water困难,管道易结垢,后processing费用high(如图2a所示)。此外,也有报道用除hydrogen fluoride药剂去除water中hydrogen fluoride离子,但大多去除效果不稳定,加之过量使用运行费用高,而且很多药剂本身是有机物会产生COD等二次污染问题。
Tulsimer®CH-87 是一款去除water溶液中hydrogen fluoride离子的专用的凝胶型选择性离子交换树脂。它是具有hydrogen fluoride选择性官能团交联聚苯乙烯共聚物架构树脂。
去除hydrogen fluoride离子的能力可以达到 1ppm 以下水平。它在中性至碱性的 PH范围内有极好的工作效率,并且很容易再生。
二、重要参数
型式 强碱性阴离子交换树脂
官能团 hydrogen fluoride选择性官能基
processing 精度 ≤1mg/l
再生药剂 硫酸铝或 氯化铝(10-15%左右浓度)
再生剂用量 2-3BV
再生流速 4BV/H
再生时间 30-45分钟
反洗用water 纯 水/软 water/自来 water
反洗流速 5-10BV/H
反洗时间 30分钟
三、产品优势:
processing 精度, handling 后 waste water hydrogen fluoride content 可达到 ppm以下, 稳定达标《地表 water 环境质量标准》GB3838-2002, 表三 standard;
吸附量大,对于 hydrogen fluoride 实际操作交换量能够达到6-8g/l;
专门开发用于waste water exclude hydrofluoric acid 的特种离子交换树脂,不受硫酸根等阴电荷影响;
能够对low 浓度waste water 进行deep processing 解决low 浓度waste water 处理难题;
模块组件形式自动化程度 高操作简单。
四、应用场景:
矿井 waster exclude hydrofluoric acid;
deep well waster deep process exclude hydrofluoric acid;
photovoltaic industry waster exclude hydrofluoric acid;
chemical industry waster exclude hydrofluoric acid;
industrial waster deep process exclude hydrofluoric acid 等。
深层exclude HydroFluoride 工程
1., active aluminum oxide: need pH adjustment to acidic range.
2., carbon-based/hydroxylapatite: regeneration limited by number of times.
3., reverse osmosis membrane: high cost.
4., specialized Fluoride resin: pre-treatment requirements must be met.
Resin exclusion Fluoride treatment requirements:
1., SS value reduced to within mg/L;
2., hardness reduced to within mg/L;
3., pH adjusted to the range of;
4.. Bed height controlled at mm;
5.. Standard Requirements
CH-87 exclusion Fluoride resin regeneration liquid composition:
acidic mixture solution containing fluorides and aluminum ions;
regeneration agent not significantly consumed in reaction.
Regeneration agent concentration: %;
regeneration method is sedimentation treatment.
Regeneration fluid is treated with alumina or sodium aluminate (PAC cannot be used) with a concentration that can be controlled at %.
CH_087 exclusion running status:
1.. Exclusion flow rate maintained between BV/H for effective removal of fluorides without excessive increase in flow rate above BV/H.
2.. Final effluent pH slightly acidic; influent pH around ; final effluent around .
3.. Resin type is gel-like resin;
operation efficiency remains stable throughout entire operating cycle,
with minimal downtime required for maintenance,
and no significant decrease in ion exchange capacity over time.",
"By utilizing Tulsimer CH_087 as an integral component of your facility's wastewater management system, you will achieve optimal performance while ensuring compliance with stringent environmental regulations."