CN205741153U - Heavy metal the device of recycling in a kind of waste acid recovery - Google Patents
Heavy metal the device of recycling in a kind of waste acid recovery Download PDFInfo
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Abstract
本实用新型提供了一种回收废酸中重金属并资源化利用的装置，解决了现有技术废渣产量大、运行费用高、回收率低等问题。回收废酸中重金属并资源化利用的装置包括：缓冲水箱；预过滤装置，与所述缓冲水箱连接；一级膜系统，与所述预过滤装置连接；中间水箱，与所述一级膜系统连接；二级膜系统，与所述中间水箱连接；透过液箱，与所述二级膜系统连接；浓缩液箱，与所述二级膜系统连接；电解装置，与所述浓缩液箱连接。本实用新型有益效果：实现了废酸的减量化处理、废渣产量低，重金属回收率高、处理费用低。
The utility model provides a device for recovering heavy metals in waste acid and utilizing them as resources, which solves the problems of large waste residue output, high operating costs, low recovery rate and the like in the prior art. The device for recovering heavy metals in waste acid and recycling them includes: a buffer water tank; a pre-filtration device connected to the buffer water tank; a primary membrane system connected to the pre-filtration device; an intermediate water tank connected to the primary membrane system Connection; the secondary membrane system is connected with the intermediate water tank; the permeable liquid tank is connected with the secondary membrane system; the concentrate tank is connected with the secondary membrane system; the electrolysis device is connected with the concentrate tank connect. The beneficial effect of the utility model is that the reduction treatment of waste acid is realized, the output of waste residue is low, the recovery rate of heavy metal is high, and the treatment cost is low.
Description
技术领域technical field
本实用新型属于危险废物处理领域，特别是指一种回收废酸中重金属并资源化利用的装置。The utility model belongs to the field of hazardous waste treatment, in particular to a device for recovering heavy metals in waste acid and utilizing them as resources.
背景技术Background technique
随着工业和经济的发展，我国每年产生的废酸在1亿吨以上，并且据中国化工信息中心调研统计，其中无机废酸约占35 %，有机废酸约占65 %，且含量40 %以上的废酸占总量的46 %左右。工业废酸主要来自于石油炼制、硫酸等化工原料生产、钢铁加工洗涤、青铜生产浸酸、电子元件制造等领域。由于废酸一般含有有机物和重金属离子，直接利用会造成二次污染，并且未经处理的废酸进入自然环境中会造成土壤酸化，废酸中的重金属在酸性土壤中活性较高易被植物吸收，进而对食品安全造成重大隐患。随着我国面临的环保与人体健康安全压力日益严峻，因此政府对企业清洁生产、节能减排、废水污染防治等方面的环保要求不断提高。With the development of industry and economy, my country produces more than 100 million tons of waste acid every year, and according to the survey and statistics of China Chemical Industry Information Center, inorganic waste acid accounts for about 35%, organic waste acid accounts for about 65%, and the content is 40%. More than waste acid accounts for about 46% of total amount. Industrial waste acid mainly comes from petroleum refining, sulfuric acid and other chemical raw material production, steel processing and washing, bronze production pickling, electronic component manufacturing and other fields. Because waste acid generally contains organic matter and heavy metal ions, direct use will cause secondary pollution, and untreated waste acid entering the natural environment will cause soil acidification. Heavy metals in waste acid are highly active in acidic soil and easily absorbed by plants. , thereby causing serious hidden dangers to food safety. As my country is facing increasingly severe pressures on environmental protection and human health and safety, the government has continuously increased its environmental protection requirements for clean production, energy saving and emission reduction, and wastewater pollution prevention and control.
目前，我国废酸一般采取的处理工艺为中和沉淀法，该工艺不仅需要消耗大量的中和剂，还会产生大量的固体废渣，且运行费用较高，回收率低，同时中和沉淀法并不能从根本上消除污染，而只是将污染物在不同介质中进行转移，特别是有毒有害的物质从水中转移到固体废渣中，造成二次污染，形成“治不胜治”的恶性循环，随着国家对工业废渣问题的重视，该处理工艺存在的弊端日益突出。另一方面，部分工业废酸还采用高温水解和蒸发法，但该工艺能耗过大，不适于大范围工业化应用，仅适用于产品附加值高的特殊组分。At present, the treatment process generally adopted for waste acid in my country is the neutralization precipitation method. This process not only needs to consume a large amount of neutralizer, but also produces a large amount of solid waste residue, and the operating cost is high, and the recovery rate is low. At the same time, the neutralization precipitation method It cannot fundamentally eliminate pollution, but only transfers pollutants in different media, especially toxic and harmful substances from water to solid waste, causing secondary pollution and forming a vicious circle of "incurable". As the country pays more attention to the problem of industrial waste, the disadvantages of this treatment process are becoming more and more prominent. On the other hand, high-temperature hydrolysis and evaporation are used for some industrial waste acids, but this process consumes too much energy and is not suitable for large-scale industrial applications. It is only suitable for special components with high added value.
虽然废酸会对自然环境和人体健康造成严重的危害，但同时废酸中一般包含具有可回收利用价值的硫酸或硝酸以及有价值的金属(如铜或镍)。基于物料回收和循环经济的理念，从单纯的废酸达标排放向回收有价金属和水资源回用技术转变已逐渐成为我国废酸处理的发展趋势。工业中传统的废酸中重金属回收工艺一般为采用电镀技术将重金属离子还原为金属态，但金属回收率与回收金属的质量会因过程中废酸中金属含量的降低而受到影响，因此需要定时检测废酸中金属含量，并补充废酸，进而造成工艺繁琐，需要大量的人力。而废酸中酸液的回收一般采用加热蒸馏工艺以回收沸点较低的酸液，例如回收沸点低于硫酸的硝酸，但回收沸点较高的硫酸则需要额外的回收处理设备，造成工艺复杂以及回收成本提高。Although the waste acid will cause serious harm to the natural environment and human health, at the same time, the waste acid generally contains sulfuric acid or nitric acid with recyclable value and valuable metals (such as copper or nickel). Based on the concept of material recovery and circular economy, the transformation from simple discharge of waste acid to the recovery of valuable metals and water resource recycling has gradually become the development trend of waste acid treatment in my country. The traditional heavy metal recovery process in waste acid in the industry generally uses electroplating technology to reduce heavy metal ions to metal state, but the metal recovery rate and the quality of recovered metal will be affected by the reduction of metal content in waste acid during the process, so it needs to be regularly Detecting the metal content in the waste acid and replenishing the waste acid results in a cumbersome process and requires a lot of manpower. The recovery of acid liquid in waste acid generally adopts a heating distillation process to recover acid liquid with a lower boiling point, such as recovering nitric acid with a lower boiling point than sulfuric acid, but recovering sulfuric acid with a higher boiling point requires additional recovery and processing equipment, resulting in complex processes and Increased recycling costs.
综上所述，工业中传统的废酸处理及回收工艺在实际应用过程中均存在一些不足，如易造成二次污染、工艺繁琐、回收率低、回收成本高等，因此探索开发出新的废酸中重金属回收并资源化利用的方法与装置对我国工业企业清洁生产、节能减排具有重要的意义。To sum up, the traditional waste acid treatment and recovery process in the industry has some shortcomings in the actual application process, such as easy to cause secondary pollution, cumbersome process, low recovery rate, high recovery cost, etc., so explore and develop new waste acid The method and device for recovery and resource utilization of heavy metals in acid are of great significance to clean production, energy saving and emission reduction of industrial enterprises in our country.
实用新型内容Utility model content
本实用新型提供了一种回收废酸中重金属并资源化利用的装置，解决了现有工艺技术产生的废渣易造成二次污染、工艺繁琐、回收率低、回收成本高等问题。The utility model provides a device for recovering heavy metals in waste acid and utilizing them as resources, which solves the problems of secondary pollution caused by waste slag generated by the existing process technology, cumbersome process, low recovery rate and high recovery cost.
本实用新型的技术方案是这样实现的：The technical scheme of the utility model is achieved in that:
一种回收废酸中重金属并资源化利用的装置，包括：A device for recovering and utilizing heavy metals in waste acid, comprising:
缓冲水箱，用于对废酸进行水质水量的调节，保证后续处理工艺稳定运行；The buffer water tank is used to adjust the water quality and quantity of waste acid to ensure the stable operation of the subsequent treatment process;
预过滤装置，用于去除废酸废水中的悬浮物、胶体物质等颗粒物，与所述缓冲水箱连接；A pre-filter device, used to remove particulate matter such as suspended solids and colloidal substances in the waste acid wastewater, is connected to the buffer water tank;
一级膜系统，用于去除预过滤系统中未能截留的悬浮物和胶体物质，与所述预过滤装置连接；A first-stage membrane system, used to remove suspended solids and colloidal substances that cannot be retained in the pre-filtration system, is connected to the pre-filtration device;
中间水箱，用于收集一级膜系统的出水，与所述一级膜系统连接；The intermediate water tank is used to collect the effluent of the first-stage membrane system and is connected with the first-stage membrane system;
二级膜系统，用于分离废酸中的酸液、阴离子和金属离子，与所述中间水箱连接；A secondary membrane system, used for separating acid liquid, anions and metal ions in waste acid, is connected with the intermediate water tank;
透过液箱，用于收集所述二级膜系统中含大部分一价离子(如F-、Cl-)的透过液，与所述二级膜系统连接；The permeate tank is used to collect the permeate containing most monovalent ions (such as F - , Cl - ) in the secondary membrane system, and is connected to the secondary membrane system;
浓缩液箱，用于收集所述二级膜系统中含少量F-和Cl-的浓缩液，与所述二级膜系统连接；Concentrate tank, used to collect the concentrate containing a small amount of F- and Cl- in the secondary membrane system, connected with the secondary membrane system;
电解装置，用于回收浓缩液中的贵重金属，与所述浓缩液箱连接。An electrolysis device, used for recovering precious metals in the concentrated solution, is connected with the concentrated solution tank.
进一步地，所述预过滤装置为多介质过滤器、砂滤装置、活性炭过滤器或袋式过滤器中的一种或多种。Further, the pre-filter device is one or more of a multimedia filter, a sand filter, an activated carbon filter or a bag filter.
进一步地，所述一级膜系统包括若干超滤或微滤膜，所述超滤或微滤膜为管式膜或卷式膜中的一种。Further, the primary membrane system includes several ultrafiltration or microfiltration membranes, and the ultrafiltration or microfiltration membranes are one of tubular membranes or roll membranes.
进一步地，所述一级膜系统的膜元件材料为聚四氟乙烯(PTFE)、聚醚砜(PES)、聚乙烯(PE)或聚砜(PSF)中的一种。Further, the membrane element material of the primary membrane system is one of polytetrafluoroethylene (PTFE), polyethersulfone (PES), polyethylene (PE) or polysulfone (PSF).
进一步地，所述二级膜系统为包括若干特种耐酸纳滤膜，所述特种耐酸纳滤膜为管式膜或卷式膜中的一种。Further, the secondary membrane system includes several special acid-resistant nanofiltration membranes, and the special acid-resistant nanofiltration membranes are one of tubular membranes or roll membranes.
进一步地，所述二级膜系统中特种耐酸纳滤膜的膜材料为聚砜(PSF)、聚四氟乙烯(PTFE)或聚乙烯(PE)中的一种。Further, the membrane material of the special acid-resistant nanofiltration membrane in the secondary membrane system is one of polysulfone (PSF), polytetrafluoroethylene (PTFE) or polyethylene (PE).
进一步地，所述电解装置为回流式电解装置、回转式电解装置或翻腾式电解装置中的一种。Further, the electrolysis device is one of a reflux electrolysis device, a rotary electrolysis device or a tumbling electrolysis device.
进一步地，所述电解装置的电极为石墨电极或铅电极中的一种。Further, the electrodes of the electrolysis device are one of graphite electrodes or lead electrodes.
本实用新型的有益效果为：The beneficial effects of the utility model are:
1.本实用新型所述的回收废酸中重金属并资源化利用的方法与装置，将膜分离、化学中和与电解技术结合起来，避免了传统中和沉淀工艺产生废渣造成二次污染的不足，实现了废酸、废渣的减量化处理，并可进行酸液以及重金属的回收，进而为企业增加一定的经济效益。1. The method and device for reclaiming heavy metals in waste acid and utilizing them as resources according to the utility model combines membrane separation, chemical neutralization and electrolysis technology to avoid secondary pollution caused by waste slag produced by traditional neutralization and precipitation processes , realizes the reduction treatment of waste acid and waste residue, and can recover acid liquid and heavy metals, thereby increasing certain economic benefits for the enterprise.
2.本实用新型所述的回收废酸中重金属并资源化利用的方法与装置，二级膜系统透过液中SO4 2-和二价以上重金属浓度低，后续中和处理过程中废渣产量降低，且废酸减量化程度高，可达到30 % ~ 50 %。2. The method and device for recovering heavy metals in waste acid and utilizing them as resources according to the utility model, the concentration of SO 4 2- and heavy metals above divalent in the permeate of the secondary membrane system is low, and the output of waste residue in the subsequent neutralization process is low. Reduced, and the degree of waste acid reduction is high, which can reach 30% ~ 50%.
3.本实用新型所述的回收废酸中重金属并资源化利用的方法与装置，废酸处理成本低。3. The method and device for recovering heavy metals in waste acid and utilizing them as resources according to the utility model have low cost of waste acid treatment.
4.本实用新型所述的回收废酸中重金属并资源化利用的方法与装置，回收率高，回收的酸液和重金属均可回用于工业生产中，实现资源化利用。4. The method and device for recovering heavy metals in waste acid and utilizing them as resources according to the utility model has a high recovery rate, and the recovered acid liquid and heavy metals can be reused in industrial production to realize resource utilization.
附图说明Description of drawings
为了更清楚地说明本实用新型实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前体下，还可以根据这些附图获得其它的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the present utility model, and those skilled in the art can also obtain other drawings according to these drawings without paying the precursor of creative work.
图1为本实用新型一种回收废酸中重金属并资源化利用装置的结构框图。Fig. 1 is a structural block diagram of a device for recovering heavy metals in waste acid and utilizing them as resources according to the present invention.
具体实施方式detailed description
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本实用新型保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.
如图1所示，本实用新型所述的一种回收废酸中重金属并资源化利用的装置，包括：As shown in Figure 1, a device for reclaiming heavy metals in waste acid and recycling them according to the utility model includes:
缓冲水箱，用于对废酸进行水质水量的调节，保证后续处理工艺稳定运行；The buffer water tank is used to adjust the water quality and quantity of waste acid to ensure the stable operation of the subsequent treatment process;
预过滤装置，用于去除废酸废水中的悬浮物、胶体物质等颗粒物，与所述缓冲水箱连接；A pre-filter device, used to remove particulate matter such as suspended solids and colloidal substances in the waste acid wastewater, is connected to the buffer water tank;
一级膜系统，用于去除预过滤系统中未能截留的悬浮物和胶体物质，与所述预过滤装置连接；A first-stage membrane system, used to remove suspended solids and colloidal substances that cannot be retained in the pre-filtration system, is connected to the pre-filtration device;
中间水箱，用于收集一级膜系统的出水，与所述一级膜系统连接；The intermediate water tank is used to collect the effluent of the first-stage membrane system and is connected with the first-stage membrane system;
二级膜系统，用于分离废酸中的酸液、阴离子和金属离子，与所述中间水箱连接；A secondary membrane system, used for separating acid liquid, anions and metal ions in waste acid, is connected with the intermediate water tank;
透过液箱，用于收集所述二级膜系统中含大部分一价离子(如F-、Cl-)的透过液，与所述二级膜系统连接；The permeate tank is used to collect the permeate containing most monovalent ions (such as F - , Cl - ) in the secondary membrane system, and is connected to the secondary membrane system;
浓缩液箱，用于收集所述二级膜系统中含少量F-和Cl-的浓缩液，与所述二级膜系统连接；Concentrate tank, used to collect the concentrate containing a small amount of F- and Cl- in the secondary membrane system, connected with the secondary membrane system;
电解装置，用于回收浓缩液中的贵重金属，与所述浓缩液箱连接。An electrolysis device, used for recovering precious metals in the concentrated solution, is connected with the concentrated solution tank.
优选地，所述预过滤装置为多介质过滤器、砂滤装置、活性炭过滤器或袋式过滤器中的一种或多种。其中，多介质过滤器是利用一种或多种介质，在一定的压力条件下使水通过一定厚度的粒状或非粒状滤料，从而有效地去除水中的悬浮物和胶体使水澄清的装置，常用的滤料有石英砂、无烟煤、砾石、磁铁矿或无烟煤等。Preferably, the pre-filter device is one or more of a multimedia filter, a sand filter, an activated carbon filter or a bag filter. Among them, the multi-media filter is a device that uses one or more media to pass water through a certain thickness of granular or non-granular filter material under certain pressure conditions, thereby effectively removing suspended solids and colloids in the water to clarify the water. Commonly used filter materials are quartz sand, anthracite, gravel, magnetite or anthracite.
优选地，所述一级膜系统包括若干超滤或微滤膜，所述超滤或微滤膜为管式膜或卷式膜中的一种。Preferably, the primary membrane system includes several ultrafiltration or microfiltration membranes, and the ultrafiltration or microfiltration membranes are one of tubular membranes or coiled membranes.
优选地，所述一级膜系统的膜元件材料为聚四氟乙烯(PTFE)、聚醚砜(PES)、聚乙烯(PE)或聚砜(PSF)中的一种。Preferably, the membrane element material of the primary membrane system is one of polytetrafluoroethylene (PTFE), polyethersulfone (PES), polyethylene (PE) or polysulfone (PSF).
优选地，所述二级膜系统为包括若干特种耐酸纳滤膜，所述特种耐酸纳滤膜为管式膜或卷式膜中的一种。Preferably, the secondary membrane system includes several special acid-resistant nanofiltration membranes, and the special acid-resistant nanofiltration membranes are one of tubular membranes or roll membranes.
优选地，所述二级膜系统中特种耐酸纳滤膜的膜材料为聚砜(PSF)、聚四氟乙烯(PTFE)或聚乙烯(PE)中的一种。Preferably, the membrane material of the special acid-resistant nanofiltration membrane in the secondary membrane system is one of polysulfone (PSF), polytetrafluoroethylene (PTFE) or polyethylene (PE).
优选地，所述电解装置为回流式电解装置、回转式电解装置或翻腾式电解装置中的一种，电解装置利用电源所提供的电力进行电解处理，浓缩液中的重金属离子在电解装置负极还原成金属态以实现回收，而电解装置中残留的电解废液含有酸液成分可进行酸液的回收。Preferably, the electrolysis device is one of a reflux electrolysis device, a rotary electrolysis device or a tumbling electrolysis device. The electrolysis device uses the power provided by the power supply to perform electrolysis treatment, and the heavy metal ions in the concentrated solution are reduced at the negative electrode of the electrolysis device. into a metal state to achieve recovery, and the residual electrolytic waste liquid in the electrolysis device contains acid components that can be recovered for acid.
优选地，所述电解装置的电极为石墨电极或铅电极中的一种。Preferably, the electrodes of the electrolysis device are one of graphite electrodes or lead electrodes.
本实用新型所述的回收废酸中重金属并资源化利用的方法与装置，具有以下优点：The method and device for reclaiming heavy metals in waste acid and recycling them as described in the utility model have the following advantages:
1.本实用新型所述的回收废酸中重金属并资源化利用的方法与装置，将膜分离、化学中和与电解技术结合起来，避免了传统中和沉淀工艺产生废渣造成二次污染的不足，实现了废酸、废渣的减量化处理，并可进行酸液以及重金属的回收，进而为企业增加一定的经济效益。1. The method and device for reclaiming heavy metals in waste acid and utilizing them as resources according to the utility model combines membrane separation, chemical neutralization and electrolysis technology to avoid secondary pollution caused by waste slag produced by traditional neutralization and precipitation processes , realizes the reduction treatment of waste acid and waste residue, and can recover acid liquid and heavy metals, thereby increasing certain economic benefits for the enterprise.
2.本实用新型所述的回收废酸中重金属并资源化利用的方法与装置，二级膜系统透过液中SO4 2-和二价以上重金属浓度低，后续中和处理过程中废渣产量降低，且废酸减量化程度高，可达到30 % ~ 50 %。2. The method and device for recovering heavy metals in waste acid and utilizing them as resources according to the utility model, the concentration of SO 4 2- and heavy metals above divalent in the permeate of the secondary membrane system is low, and the output of waste residue in the subsequent neutralization process is low. Reduced, and the degree of waste acid reduction is high, which can reach 30% ~ 50%.
3.本实用新型所述的回收废酸中重金属并资源化利用的方法与装置，废酸处理成本低。3. The method and device for recovering heavy metals in waste acid and utilizing them as resources according to the utility model have low cost of waste acid treatment.
4.本实用新型所述的回收废酸中重金属并资源化利用的方法与装置，回收率高，回收的酸液和重金属均可回用于工业生产中，实现资源化利用。4. The method and device for recovering heavy metals in waste acid and utilizing them as resources according to the utility model has a high recovery rate, and the recovered acid liquid and heavy metals can be reused in industrial production to realize resource utilization.
以下列举几个实例来说明本实用新型的效果，但发明的权利要求范围并非仅限于此。Several examples are listed below to illustrate the effect of the present utility model, but the scope of claims of the invention is not limited thereto.
实施例1为某铜冶炼废酸，其中酸质量分数(以硫酸计)为7.2 %，氟离子浓度为153mg/L，氯离子浓度为1080 mg/L，铜离子浓度为510 mg/L，铅离子浓度为60 mg/L，通过预过滤装置和一级膜系统，废酸中的悬浮物和胶体被去除，二级膜系统透过液中酸质量分数为0.8 %，氯离子浓度为1030 mg/L，氟离子浓度为140 mg/L，浓缩液中酸质量分数为13.8 %，铜离子浓度为503 mg/L，铅离子浓度为58.87 mg/L，浓缩液经过电解装置电解后电解液中酸质量分数约为14 %，铜的回收率为97.9 %，铅的回收率为95 %。Example 1 is a certain copper smelting waste acid, wherein the acid mass fraction (in sulfuric acid) is 7.2%, the fluoride ion concentration is 153mg/L, the chloride ion concentration is 1080 mg/L, the copper ion concentration is 510 mg/L, and the lead The ion concentration is 60 mg/L. The suspended solids and colloids in the waste acid are removed through the pre-filtration device and the first-stage membrane system. The acid mass fraction in the permeate of the second-stage membrane system is 0.8%, and the chloride ion concentration is 1030 mg. /L, the fluoride ion concentration is 140 mg/L, the acid mass fraction in the concentrated solution is 13.8%, the copper ion concentration is 503 mg/L, and the lead ion concentration is 58.87 mg/L. The mass fraction of acid is about 14%, the recovery rate of copper is 97.9%, and the recovery rate of lead is 95%.
实施例2为某电镀厂的废酸，其中酸质量分数(以硫酸计)为6.2 %，锌离子浓度为33.2 mg/L，铜离子浓度为118 mg/L，铅离子浓度为12.5 mg/L，镍离子浓度为20 mg/L，通过预过滤装置和一级膜系统，废酸中的悬浮物和胶体被去除，二级膜系统透过液中酸质量分数为0.68 %，浓缩液中酸质量分数为11.9 %，锌离子浓度为32.8 mg/L，铜离子浓度为116.3mg/L，铅离子浓度为11.6 mg/L，镍离子浓度为19.3 mg/L，浓缩液经过电解装置电解后电解液中酸质量分数约为12 %，锌的回收率为96.6 %，铜的回收率97 5 %，铅的回收率为96 %，镍的回收率为98.6 %。Embodiment 2 is the waste acid of a certain electroplating factory, wherein the acid mass fraction (in sulfuric acid) is 6.2%, the zinc ion concentration is 33.2 mg/L, the copper ion concentration is 118 mg/L, and the lead ion concentration is 12.5 mg/L , the nickel ion concentration is 20 mg/L, the suspended matter and colloid in the waste acid are removed through the pre-filtration device and the first-stage membrane system, the mass fraction of the acid in the permeate of the second-stage membrane system is 0.68%, and the acid in the concentrate The mass fraction is 11.9%, the concentration of zinc ions is 32.8 mg/L, the concentration of copper ions is 116.3 mg/L, the concentration of lead ions is 11.6 mg/L, and the concentration of nickel ions is 19.3 mg/L. The mass fraction of acid in the liquid is about 12%, the recovery rate of zinc is 96.6%, the recovery rate of copper is 97.5%, the recovery rate of lead is 96%, and the recovery rate of nickel is 98.6%.
以上所述因为本实用新型的较佳实施例而已，并不用以限制本实用新型，凡在本实用新型的精神和原则以内，所作的任何修改、等同置换、改进等，均应包含在本实用新型的保护范围以内。The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model should be included in the utility model. Within the scope of the new protection.
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| CN105400959A (en) * | 2015-12-30 | 2016-03-16 | 北京清大国华环境股份有限公司 | Method and device for performing recovery and resource utilization on heavy metal in waste acid |
| CN108396155A (en) * | 2018-03-05 | 2018-08-14 | 云南驰宏锌锗股份有限公司 | A kind of process of Zinc electrolysis electrolysis waste solution purification production high quality zinc |
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| CN105400959A (en) * | 2015-12-30 | 2016-03-16 | 北京清大国华环境股份有限公司 | Method and device for performing recovery and resource utilization on heavy metal in waste acid |
| CN105400959B (en) * | 2015-12-30 | 2019-03-19 | 清大国华环境集团股份有限公司 | Heavy metal and the method and apparatus of resource utilization in a kind of waste acid recovery |
| CN108396155A (en) * | 2018-03-05 | 2018-08-14 | 云南驰宏锌锗股份有限公司 | A kind of process of Zinc electrolysis electrolysis waste solution purification production high quality zinc |
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