电镀重金属废水处理循环回用系统
随着全球可持续发展战略的实施,循环经济和清洁生产技术越来越受到人们关注。电镀重金属废水治理已向清洁生产工艺、物质循环利用、废水回用等综合防治阶段发展。未来电镀重金属废水治理将贯彻循环经济、重视清洁生产技术的开发与应用;采用全过程控制、结合废水综合治理、最终实现废水零排放。电镀废水种类繁多,各种电镀工艺差异很大,仅使用传统废水治理方法往往有其局限性,达不到严格的环境要求,同时不稳定。综合多种治理技术特点的膜技术,因其稳定优异的性能,无可替代的深度处理技术,处理后水可以直接回用的经济价值和环保价值必将逐步受到重视。
核心“膜”技术
在整个废水处理、过滤、净化到生产回用水的过程中,最关键的是膜过滤, 成熟的运用经验,以及其不断的发展和创新,弥补了多年来膜 过滤存在的瑕疵,提高了膜的耐久性和使用寿命,不仅利于水的过滤,而且对预防反渗透膜的堵塞起着有效的作用。
Membrane filtration is the key in the process of wastewater treatment, filtration, purification and production recycling water. Vicdis' mature operation experience and its innovation has enhanced the high resistance and long service life of membrane and made up the flaw existed in membrane filtration for many years. So TMF modules is of high membrane flux and long Iife, which is good for water filtration and effective to prevent the build-up of particles of RO membrane .
管式膜可以取代常用的过滤设备,如砂滤、碳滤、微滤和精密过滤,经过过滤后的水可直接回用于RO系统。
Tubular membrane can replace the commonly used filtering equipment, such as sand filter, carbon filter, micro filter and precision filtration, filtered water can be directly back to the RO system .
从上世纪80年代初开始由MEMTEK公司采用此管式微滤膜,用来取代过时的重力澄清工艺,满足当时的严格的金属排放要求。整个80年代MEMTEK安装了数百套采用了微滤膜的系统,取代了不能满足严格排放标准的系统。由此TMF管式微滤系统成为处理金属加工工业、专门的电子、印刷电路板和高科技电子制造业这些难处理废水的可靠方法。
from the 1980 s start of the tube MEMTEK company declined the membrane filter, used to replace outdated gravity, meet the process was clear strict metal emissions requirements. Throughout the 80 s MEMTEK installed by the hundreds of sets microfiltration membrane system, replacing the can't meet the strict emission standard system. Thus TMF tube declined filter system become processing metal processing industry, special electronic, printed circuit board and high-tech electronics manufacturing these difficult to treat wastewater reliable methods.
电镀重金属处理回用系统
工业废水
Industrial wastewater
挑战:
Challenges:
由于废水排放要求日益严格,日益增多的法令限制,越来越严格的水质标准和飙长的排污收费负担可能在潜在地降低工厂的盈利能力。传统的废水处理首先在反应器中进行生物降解,其后是净化工艺。这一般是一个沉降过程。这些工厂一般占用面积大,但是产生的水达不到回用水质量。
Because of waste water discharge regulations getting more and more restrictive, more cost on treatment of industrial waste water, manufacturers’ profits and productivities are getting less. Traditional industrial waste water treatments facilities and procedures, using larger areas, cannot clear the waste water to re-use quality level.
解决方案:
Solutions:
为了高效地处理废水和提供高品质的回用水。开发了并获得了专利的管式膜污水处理技术。含污泥的溶液通过膜过滤系统。从污泥中分离出水。然后污泥重新回到浓缩池,而过滤液作为无颗粒排出液被排放或回用。
该系统自成一体,简单容易维护,而且全封闭。TMF微滤膜 提供性能强大的净化溶液。水既能直接回用,也能按要求进一步处理,如反渗透、活性炭或紫外线。
Applying patented TMF (Tubular Micro Filtration) technology into industrial waste water treatment is the solution. When treated water with flocculation goes through the TMF system, the clear water that can be re-used will filtered from membrane and the solid waste with contaminant particles will go to concentrated sludge tank.
This system is completed water treatment system and it is easy to operate. TMF is so powerful that any waste water that can go through it can be either re-used directly or send it to R/O and other deep clearing system like active carbon or ultraviolet ray system.
管式膜
设备特点: | Equipment Features: |
长寿命的管式膜 可连续去除水中悬浮物 与沉淀物紧凑 滑架式的安装 完整的设计 包含内部清洗系统 自动清洗(随洗) 背脉冲装置可使系统达到最大通量 自动,无故障操作 提供随选与辅助工艺模块 PLC自动控制 | Long-life tubular membrane Suspended solids removal in the water High solid handing capacity Rack slide installation Complete design Inner cleaning system Self-cleaning(on demand) High flux Automatic, trouble-free operation Provide optional and assistant technics modules Automatic PLC control |
优势: | Advantages: |
可以完全去除颗粒物质 | Can remove particulate matter |
对膜的运行有严格的保证与承诺 | Strict commitment for membrane's operation |
膜处理后的水,水质良好,完全不需要投 加聚合物 | Membrane treated water, goodquality, no need to increase polymer |
完整的设计 | Complete design |
较传统的工艺产出的污泥量少 | Less sludge produced than the traditional process |
该设备可与用户原有的设备良好的结合使用 | The device can be combined with original equipment customers |
设备模块可以按照用户的需要添加拓展 | Equipment modules can be added according to user's needs |
典型应用: | Typical Applications: |
金属表面处理液中去除重金属 | Heavy metal removal in metal finishing fluids |
RO预处理降SDI | Pretreatment for reverse osmosis for SDI reduction |
结合石灰软化降低硬度 | Reduction of hardness with lime softening |
含氟(F)废水除氟 | Fluorde removal |
RO 浓水回收 | Reclaim of RO reject |
电镀槽液中高浓度固体物质的去除 | High solids removal in electroplating solution baths |
食品饮料处理 | High solids removal from completion fluids |
切削液中高浓度固体物质的去除 | Food and beverage processing |
硅晶体研磨切片工艺切削液回用 | Cutting fluids recycling in silica grinding and slicing |
从焚烧炉洗涤去除水中重金属 | Heavy metal removal from incinerator scrubber water |
吹式和侧流式冷却塔的过滤回收 | Cooling tower blow-down recycling and/or side stream filtration |
水处理系统中的盐水再利用 | Brine recycling in water treatment systems |
化学、微电子、造纸工业废水处理 | Wastewater processing from the chemical, |
市场领域 | 具体应用 |
金属电镀 | 去除重金属离子。经处理后离子浓度低于0.1ppm Heavy metal removal in metal finishing fluids, membrane filtrate less than 0.1ppm |
印刷电路板 | 去除重金属离子。经处理后离子浓度低于0.1ppm Heavy metal removal in metal finishing fluids, membrane filtrate less than 0.1ppm |
0 半导体
| 经处理后砷化合物浓度低于0.1ppm Arsenic compounds of filtrate less than 0.1ppm 经处理后氟化合物浓度低于5ppm Fluoride compounds of filtrate less than 0.5ppm 减少硅的流失 Reduce the loss of silicon 去离子 Deionized 从铅到锡的电镀废水中回收重金属 Recycle heavy metal from electroplating wastewater of lead and tin. |
回灌地下水 | 去除重金属离子。经处理后离子浓度低于0.1ppm Remove heavy materials, filtrate less than 0.1ppm |
电池制造 | 去除污水中的铅与镉 Lead and cadmium removal |
汽车制造 | 去除磷酸盐处理工程中含有的锌与磷酸盐 Remove phosphate and zinc in the process of phosphate treatment. |
工业一般用途 | 去除焚烧清洗水中的重金属物质 Incinerator, scrubber water treatment. 用于废水回用中在反渗透前的预处理 RO pretreatment of wastewater recycling 在循环水中用于软化水 Softener water in recycling water 整体的重金属去除率达到0.1ppm Heavy metal removal, filtrate less than 0.1ppm 在沙滤工艺后代替澄清池 Replace the clarifiers after sand filters. |
MATERIAL SPECIFICATIOMS j | |
Substrate tube | Polyvinyidene Fluoride High Density Polyethylene |
Membrane | Polyvinylidene Fluoride |
Nominal Membrane Pore Size(μm) | 0.05,0.1,0.5 |
Nominal Sinter Tube Pore Size(μm) | 20,100 |
Maximum Differential Pressure (PSI) | 60(1 inch tubes),120(1/2inch tubes) |
Housing Materials | PVC,CPVC |
Housing Connections (42×1/2inch tube) | Length -72 inches Diameter -8 inches End Connection -8inch OD Victaulic groove Permeate Ports -3 inch male socket (for tubing connection) Sample Port -1/4 inch NPT plug |
Housing Connections (10 or 13×1 inch tube) | Length -72 inches Diameter -6 inches End Connections -6 inch OD Victaulic groove Permeate Ports -3 inch male socket (for tubing connection) Sample Port -1/4 inch NPT plug |
Housing Connections (4 or 5×1 inch tube) | Length -72 inches Diameter -4 inches End Connections -4 inch OD Victaulic groove Permeate Ports -11/2 inch male socket (for tubing connection) Sample Port -1/4 inch NPT plug |
Housing Connections (1×1 inch tube) | Length -72 inches Diameter -2.5 inches End Connections -1 inch threaded Permeate Ports -1 inch threaded Sample Port -1/4 inch NPT plug |
金属污染物 | 经TMF系统处理后,排放可达标(毫克/升) |
铜(Cu) | 0.005 |
镍(Ni) | 0.05 |
铬(Cr) | 0.05 |
铅(Pb) | 0.05 |
镉(Cd) | 0.005 |
锌(Zn) | 0.05 |
银(Ag) | 0.01 |
钼(Mo) | 0.1 |
砷(As) | 0.005 |
氰(Cn) | 0.01 |
金(Au) | 0.1 |
水银(Hg) | 0.005 |
铑(Rh) | 0.1 |
锡(Sn) | 0.1 |
铀(Pt) | 0.01 |
镓(Ga) | 0.5 |
锗(Ge) | 0.5 |
铁(Fe) | 0.02 |
锰(Mn) | 0.02 |
以上都是实际数据。如果采用不同的化学药剂和污水处理方式,这些数据可能会有差异。 |
为什么选用VD TMF系统处理重金属废水?
许多行业中产生的重金属废水在排放或回收前都要进行预处理,TMF 系统和沉淀的工艺组合对去除重金属(镍,锌,铜,铅,铬等)是非常有效的。TMF 系统的产水既可以排到城市废水管网,也可以进一步处理后回收,处理后的水中SS<1ppm,金属含量<0.1ppm是典型的。TMF 系统可以多年的化学清洗操作,并且用一些通用的化学药品就可以了。
VD TMF系统组件的寿命有多长?
VD系统典型的寿命是3-5年或更久,整个TMF系统可以用20年设计。TMF系统组件所应用的PVDF膜和PVDF/HDPE支撑是非常坚固的,耐磨擦、耐高温、pH在0-14间不会降低其截留固体的能力。
总结:
TMF 系统应用快速增长的原因主要有:
1.易于运行维护和控制;
2.耐磨擦和抗温度波动;
3.可以连续运行,良好的性能;
4.高的膜通量。
当用来降低进RO的SDI时,TMF 系统将对RO系统的性能有重要的改善---一般会延长RO组件的寿命,减少其污堵/清洗的频率,同时它比经常更换袋式过滤或筒式过滤经济。对于固体的去除,TMF系统与澄清池相比,具有占地小、受温度变化的影响小、要求的楼层间的空间小等优点。TMF 系统是一种能处理含高固体浓度的工艺水的过滤工艺,相比其它的膜工艺有巨大的优势。
怎样设计典型的VD TMF系统金属沉淀工艺
典型的工艺见图1。含溶解性金属的进水进入反应池1#,并加入化学药剂生成金属沉淀物,接着反应池1#的出水进入反应池2#,调节PH值,并进一步生成沉淀,反应池2#的出水进入浓水池被TMF系统处理,浓水再循环回浓水罐前面稀释。固体浓度保持在3-5%,剩余固体进到压滤机进一步处理或处置。 要求的TMF系统组件数量取决于系统要求的总产水量和最多只能串联12个组件的限制。TMF 系统的排列组数要满足最少一组要求清洗时的要求。用一个小型中试系统测试是确定通过膜组件的理想通量和确定导致组件需清洗的因素(如胶体)的好方法。
图1 TMF系统用做重金属废水处理的典型流程图
典型的TMF系统
联系方式
东莞市威迪膜科技有限公司
公司网址:www.vicdi.com 公司邮箱:vicdi@vicdi.com 公司热线:4000-222-515 公司地址:广东省东莞市虎门镇村头管理区团结大道