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氨基磺酸镍废水处理系统起到了什么作用?
来源:http://www.jnjrh.com 日期:2019-06-19 发布人:admin
氨基磺酸镍废水一般来源自电镀镍清洗工序,采用加碱反应+TMF膜过滤+NF膜过滤的处理工艺。游离的镍离子在碱性条件下同氢氧根离子可生成稳定的氢氧化物沉淀,经TMF+NF工艺后即可去除。得到的清水总镍含量≤0.1mg/L,污泥经板框压滤机脱水后的干泥饼送往废物处理中心处理。滤液和系统清洗液返回氨基磺酸镍废水调节池进行再处理。
Nickel sulfamate wastewater generally comes from nickel electroplating cleaning process. The treatment process of adding alkali reaction + TMF membrane filtration + NF membrane filtration is adopted. Free nickel ions can form stable hydroxide precipitation with hydroxide ions under alkaline conditions, which can be removed by TMF + NF process. The total nickel content of clean water is less than 0.1 mg/L, and the dewatered mud cake of the sludge is sent to the waste treatment center for treatment. The filtrate and system cleaning fluid are returned to the nickel sulfamate wastewater treatment tank for reprocessing.
氨基磺酸镍废水处理系统简介
Brief Introduction of Nickel Aminosulfonate Wastewater Treatment System
本系统将氨基磺酸镍废水调节pH,无需作任何的前处理,如混凝剂等(更节省滤芯等相关耗材), 通过TMF+NF(固液分离膜系统),水被分离,总镍含量≤0.1mg/L,可以直接回调pH排放或配套回用系统制造纯水回用。镍金属产生的氢氧化镍污泥可直接压渣后交具资质的公司处理。膜运行一段时间后, 通量会降低, 靠反冲洗方法都不能满足处理能力时, 需用化学法清洗膜系统, 化学剂可多次循环使用,失效的化学剂可排放至氨基磺酸镍废水收集水箱.
The system regulates the pH of nickel sulfamate wastewater without any pretreatment, such as coagulant, etc. (saving filter elements and other related consumables). Through TMF+NF (solid-liquid separation membrane system), water is separated and the total nickel content is less than 0.1 mg/L. It can directly adjust the pH discharge or make pure water reuse by matching reuse system. Nickel hydroxide sludge produced by nickel metal can be directly pressed and handed over to a qualified company for treatment. After a period of operation, the flux of the membrane will decrease. When the backwashing method can not meet the treatment capacity, the membrane system needs to be cleaned by chemical method. The chemical agent can be reused many times, and the invalid chemical agent can be discharged to the nickel sulfamate wastewater collection tank.
氨基磺酸
去除原理:溶解态转化为非溶解态 + 固液分离。
Removal principle: dissolving state into insoluble state + solid-liquid separation.
技术特点
Technical characteristics
该股氨基磺酸镍的废水并无络合镍,采用加碱沉淀的方法是可以达到去除镍的目的。不需要投加任何的絮凝剂或者其他重金属捕捉剂,在整个工艺的过程无其他化学药品的加入使得最后配制的回用溶液的品质不受杂质的影响。传统的工艺一般是采用加碱混凝重力沉淀过滤,其中投加了PAM或者PAC的絮凝剂,使得回用的溶液收到了污染,并且投加了这些物质对后续膜的处理带来了巨大的负担,甚至造成致命的损害,回用成本增大。
The waste water of the nickel thiosulfonate has no nickel complex. The nickel can be removed by adding alkali to precipitate. No flocculants or other heavy metal traps are needed. No other chemicals are added during the whole process, so the quality of the final recycled solution is not affected by impurities. The traditional process usually uses alkali-added coagulation gravity precipitation filtration, in which PAM or PAC flocculants are added, which pollutes the reused solution, and adds these substances to the subsequent membrane treatment, which brings huge burden, even fatal damage, and increases the reuse cost.
氨基磺酸镍废水处理系统调整pH至10-11左右,达到镍的最佳沉淀pH,再经过TMF+NF两道膜处理工艺。TMF将已经反应完全形成沉淀物的镍过滤,TMF过滤液有少许泄露或因反应不完全而穿透TMF膜的部分水质再经过低脱盐率的NF膜再次过滤,保证了水质镍含量达到标准。
Nickel sulfamate wastewater treatment system adjusts the pH to about 10-11 to reach the optimum precipitation pH of nickel, and then through TMF + NF two-channel membrane treatment process. TMF filters nickel which has already reacted to form precipitate completely. Some water quality of TMF filtrate leaks or passes through TMF membranes due to incomplete reaction and then filters again through low desalination rate NF membranes to ensure that the nickel content of water reaches the standard.
相关标签:氨基磺酸