技术领域technical field
本发明属于高盐废水中的盐资源回收利用技术领域，公开了一种回收高盐榨菜废水中氯化钠溶液的方法，尤其涉及一种回收榨菜制备过程中的高盐有机废水中的氯化钠盐分的技术方法，还涉及到一种利用此技术方法来回收氯化钠盐资源的装置。The invention belongs to the technical field of recovery and utilization of salt resources in high-salt waste water, discloses a method for recovering sodium chloride solution in high-salt mustard mustard waste water, and particularly relates to a method for recovering chlorination in high-salt organic waste water in the process of preparing mustard mustard The technical method of sodium salt also relates to a device for recovering sodium chloride salt resources by using the technical method.
背景技术Background technique
榨菜的制备过程会产生大量的高盐有机废水。目前，传统的高盐有机废水的处理方法有电渗析、蒸馏、反渗透、离子交换等，但是这些技术方法根本不涉及盐资源的回收利用。现有技术存在的问题是：传统的高盐废水的处理方法有电渗析、蒸馏、反渗透、离子交换等，这些处理方法的成本都相对比较高，但是它们都不涉及盐资源的回收利用，它们的最终产物是低污染物含量的含盐废水或者是不含染污物的纯净水，它们的目的是高盐有机废水经过处理后满足国家排放标准要求，实现达标排放，而不能实现回收的氯化钠盐资源的目的。The preparation process of pickled mustard will produce a large amount of high-salt organic wastewater. At present, the traditional high-salt organic wastewater treatment methods include electrodialysis, distillation, reverse osmosis, ion exchange, etc., but these technical methods do not involve the recycling of salt resources at all. The problem existing in the existing technology is: the traditional high-salt wastewater treatment methods include electrodialysis, distillation, reverse osmosis, ion exchange, etc. The cost of these treatment methods is relatively high, but none of them involve the recycling of salt resources. Their final products are saline wastewater with low pollutant content or pure water without pollutants. Their purpose is to meet the requirements of national discharge standards after high-salt organic wastewater is treated, and achieve standard discharge, but cannot achieve recycling. Sodium chloride salt resource purpose.
总之，传统的方法不能实现回收氯化钠盐资源的目的，也不涉及重复利用氯化钠盐分的问题。In a word, the traditional method cannot achieve the purpose of recovering sodium chloride salt resources, nor does it involve the problem of reusing sodium chloride salt.
发明内容Contents of the invention
针对现有技术存在的问题，本发明提供了一种回收高盐榨菜废水中氯化钠溶液的方法，本发明创新之处就是侧重盐资源的回收利用，而以上现有技术所有废水处理方法根本不涉及盐资源的回收利用。Aiming at the problems existing in the prior art, the present invention provides a method for reclaiming sodium chloride solution in high-salt mustard mustard wastewater. The innovation of the present invention is to lay particular emphasis on the recovery and utilization of salt resources, while all the wastewater treatment methods of the above prior art fundamentally Recycling of salt resources is not involved.
一种回收高盐榨菜废水中氯化钠溶液的方法，所述回收高盐榨菜废水中氯化钠溶液的方法利用半透膜技术，因为不同孔径的半透膜可以通过不同分子量的分子和离子。孔径越大，可通过的分子量就大。反之，则越小。该发明的实质是利用不同孔径的半透膜逐层过滤，只把氯化钠过滤到净水中，从而实现部分回收氯化钠的目的。实际上即使部分回收氯化钠，其总量也是非常可观的，而那些分子量大于氯化钠的分子和离子，包括废水中有机物将会和那些没有回收的氯化钠一起都从废水出口流出。A method for recovering sodium chloride solution in high-salt mustard mustard wastewater, the method for recovering sodium chloride solution in high-salt mustard mustard wastewater utilizes semi-permeable membrane technology, because semi-permeable membranes with different pore sizes can pass molecules and ions of different molecular weights . The larger the pore size, the larger the molecular weight that can pass through. On the contrary, the smaller it is. The essence of the invention is to use semi-permeable membranes with different pore sizes to filter layer by layer, and only filter sodium chloride into clean water, thereby realizing the purpose of partially recovering sodium chloride. In fact, even if sodium chloride is partially recovered, its total amount is also very considerable, and those molecules and ions with a molecular weight greater than sodium chloride, including organic matter in the waste water, will all flow out from the waste water outlet together with those unrecovered sodium chloride.
本发明另一目的在于提供一种回收高盐榨菜废水中氯化钠溶液的装置设置有：储水器；Another object of the present invention is to provide a device for recovering sodium chloride solution in high-salt mustard mustard wastewater, which is provided with: a water storage device;
所述半透膜透析袋分为三层，分别为内部半透膜透析袋，中部半透膜透析袋，外部半透膜透析袋，放置在储水器内部；目的是实现高盐有机废水中的不同分子量的有机废物被分层过滤掉。The semi-permeable membrane dialysis bag is divided into three layers, which are the inner semi-permeable membrane dialysis bag, the middle semi-permeable membrane dialysis bag, and the outer semi-permeable membrane dialysis bag, which are placed inside the water storage; the purpose is to realize high-salt organic wastewater. Organic wastes of different molecular weights are filtered out in layers.
所述进水口安装在内部半透膜透析袋头部，出水口安装在半透膜透析袋尾部。The water inlet is installed at the head of the internal semi-permeable membrane dialysis bag, and the water outlet is installed at the tail of the semi-permeable membrane dialysis bag.
进一步，所述袋子最内层和袋子与袋子之间的夹层均可透过不含任何杂质的水，内部半透膜透析袋可透过分子量为200，中间半透膜透析袋是可透分子量为100，外层半透膜透析袋是可透分子量为50。理论与实践证明：因为高盐有机废水中根本不会存在低于分子量50的有机物，分子量高于50的可溶性有机物包括氨基酸、蛋白质和脂肪等会被半透膜透析袋依次分层过滤掉，能通过分子量50的半透膜透析袋的物质只有氯化钠盐分在水中解离生成的氯离子和钠离子，从而实现回收氯化钠盐分的目的。Further, the innermost layer of the bag and the interlayer between the bag and the bag can pass through water without any impurities, the internal semi-permeable membrane dialysis bag has a permeable molecular weight of 200, and the middle semi-permeable membrane dialysis bag has a permeable molecular weight of 200. 100, the outer semi-permeable membrane dialysis bag has a permeable molecular weight of 50. Theory and practice have proved that: because organic matter with a molecular weight lower than 50 does not exist in high-salt organic wastewater, soluble organic matter with a molecular weight higher than 50, including amino acids, proteins, and fats, will be sequentially filtered out by semi-permeable membrane dialysis bags. The material passing through the semi-permeable membrane dialysis bag with a molecular weight of 50 is only chloride ions and sodium ions generated by the dissociation of sodium chloride salt in water, so as to achieve the purpose of recovering sodium chloride salt.
进一步，所述储水器盖板与储水器连接处用密封圈进行密封。Further, the connection between the cover plate of the water storage and the water storage is sealed with a sealing ring.
本发明结构简单，能够有效的回收榨菜生产过程中产生的高盐有机废水中的氯化钠，从而可以继续用来进行榨菜的生产或者用作其他用途，实现氯化钠盐资源的循坏利用。The invention has a simple structure and can effectively recover the sodium chloride in the high-salt organic wastewater produced in the mustard mustard production process, so that it can continue to be used in the production of mustard mustard or for other purposes, and realize the recycling of sodium chloride and salt resources .
本发明利用半透膜技术，因为不同孔径的半透膜可以有区分地渗透通过分子量大小不同的分子和离子。膜孔径越大，可通过的分子量相对越大。膜孔径越小，则只有越小的分子量物质才能通过。该发明的实质是利用不同孔径的半透膜逐层过滤，只把氯化钠过滤到净水中，从而实现部分回收氯化钠的目的。实际上即使部分回收氯化钠，其总量也是非常可观的，而那些分子量大于氯化钠的分子和离子，包括废水中有机物将会和那些没有回收的氯化钠一起都从废水出口流出。The present invention utilizes the semipermeable membrane technology, because the semipermeable membranes with different pore sizes can differentiate and permeate through molecules and ions with different molecular weights. The larger the membrane pore size, the larger the molecular weight that can pass through. The smaller the membrane pore size, only the smaller molecular weight substances can pass through. The essence of the invention is to use semi-permeable membranes with different pore sizes to filter layer by layer, and only filter sodium chloride into clean water, thereby realizing the purpose of partially recovering sodium chloride. In fact, even if sodium chloride is partially recovered, its total amount is also very considerable, and those molecules and ions with a molecular weight greater than sodium chloride, including organic matter in the waste water, will all flow out from the waste water outlet together with those unrecovered sodium chloride.
附图说明Description of drawings
图1是本发明实施例提供的回收高盐榨菜废水中氯化钠溶液的装置结构示意图；Fig. 1 is the device structural representation of the reclaiming sodium chloride solution in the high-salt mustard mustard wastewater provided by the embodiment of the present invention;
图中：1、储水器；2、内部半透膜透析袋；3、中部半透膜透析袋；4、外部半透膜透析袋；5、废水出水口；6、氮气或二氧化碳气体进气口；7、排气口；8、观察窗；9、净水进水口；10、出水口。In the figure: 1. Water reservoir; 2. Internal semi-permeable membrane dialysis bag; 3. Middle semi-permeable membrane dialysis bag; 4. External semi-permeable membrane dialysis bag; 5. Waste water outlet; 6. Nitrogen or carbon dioxide gas inlet 7. Exhaust port; 8. Observation window; 9. Clean water inlet; 10. Water outlet.
具体实施方式Detailed ways
为能进一步了解本发明的发明内容、特点及功效，兹例举以下实施例，并配合附图1详细说明如下。In order to further understand the invention content, features and effects of the present invention, the following examples are exemplified, and detailed descriptions are given below in conjunction with accompanying drawing 1 .
下面结合附图对本发明的结构作详细的描述。The structure of the present invention will be described in detail below in conjunction with the accompanying drawings.
本发明实施例提供的回收高盐榨菜废水中氯化钠溶液的方法，利用半透膜技术，因为不同孔径的半透膜可以通过不同分子量的分子和离子。孔径越大，可通过的分子量就大。反之，则越小。该发明的实质是利用不同孔径的半透膜逐层过滤，只把氯化钠过滤到净水中，从而实现部分回收氯化钠的目的。实际上即使部分回收氯化钠，其总量也是非常可观的，而那些分子量大于氯化钠的分子和离子，包括废水中有机物将会和那些没有回收的氯化钠一起都从废水出口流出。The method for recovering the sodium chloride solution in the high-salt mustard mustard wastewater provided by the embodiments of the present invention utilizes the semipermeable membrane technology, because the semipermeable membranes with different pore sizes can pass molecules and ions of different molecular weights. The larger the pore size, the larger the molecular weight that can pass through. On the contrary, the smaller it is. The essence of the invention is to use semi-permeable membranes with different pore sizes to filter layer by layer, and only filter sodium chloride into clean water, thereby realizing the purpose of partially recovering sodium chloride. In fact, even if sodium chloride is partially recovered, its total amount is also very considerable, and those molecules and ions with a molecular weight greater than sodium chloride, including organic matter in the waste water, will all flow out from the waste water outlet together with those unrecovered sodium chloride.
如附图1所示，本发明实施例提供的回收高盐榨菜废水中氯化钠溶液的装置设置有：储水器1；半透膜透析袋分为三层，分别为内部半透膜透析袋2，中部半透膜透析袋3，外部半透膜透析袋4，放置在储水器1内部；进水口安装在内部半透膜透析袋2头部，出水口5安装在半透膜透析袋尾部。As shown in accompanying drawing 1, the device for reclaiming sodium chloride solution in the high-salt mustard mustard waste water provided by the embodiment of the present invention is provided with: water reservoir 1; Bag 2, middle semi-permeable membrane dialysis bag 3, outer semi-permeable membrane dialysis bag 4, placed inside the water storage 1; the water inlet is installed on the head of the inner semi-permeable membrane dialysis bag 2, and the water outlet 5 is installed on the semi-permeable membrane dialysis Bag end.
储水器1左上为氮气或二氧化碳气体进气口6；储水器1右上为排气口7；储水器1上面中间为观察窗8；储水器1左下为净水进水口9；储水器1右下为出水口10。The upper left of the water storage 1 is a nitrogen or carbon dioxide gas inlet 6; the upper right of the water storage 1 is an exhaust port 7; the middle of the top of the water storage 1 is an observation window 8; Water outlet 10 is water outlet 1 lower right.
进一步，袋子最内层和袋子与袋子之间的夹层均可透过不含任何杂质的水，内部半透膜透析袋2可透过分子量为200，中间半透膜透析袋3是可透分子量为100，外层半透膜透析袋4是可透分子量为50。Further, the innermost layer of the bag and the interlayer between the bag and the bag can pass through water without any impurities. The inner semi-permeable membrane dialysis bag 2 has a molecular weight of 200, and the middle semi-permeable membrane dialysis bag 3 has a molecular weight of 200. is 100, and the outer semi-permeable membrane dialysis bag 4 has a permeable molecular weight of 50.
进一步，储水器盖板与储水器1连接处用密封圈进行密封。Further, the connection between the water storage cover plate and the water storage 1 is sealed with a sealing ring.
本发明的工作原理：Working principle of the present invention:
1、将榨菜生产过程中产生的高盐有机废水进行沉淀，除去其中可沉降的固体不溶性杂质，袋子的长度不限，可以根据实际生产产生的废水的量的大小来进行调节。1. Precipitate the high-salt organic wastewater generated in the mustard production process to remove the settleable solid insoluble impurities. The length of the bag is not limited, and can be adjusted according to the amount of wastewater generated in actual production.
2、将盐度为70以上的榨菜有机废水1000L导入三层厚的透析袋子中，袋子放入含有1000L纯水的储水器中，储水器中充入氮气或者二氧化碳气体，密封，目的是屏蔽空气中的氧气，防止废水中的细菌生长和繁殖。放置3-72小时或者更长的时间，此时，经分析检测，纯水的盐度不断增大到50--100或者更高的盐度水平，回收这些盐度不断增大的绿化钠盐水溶液。2. Introduce 1000L of mustard mustard organic wastewater with a salinity above 70 into a three-layer thick dialysis bag, put the bag into a water reservoir containing 1000L of pure water, fill the water reservoir with nitrogen or carbon dioxide gas, and seal it. Shield the oxygen in the air and prevent the growth and reproduction of bacteria in the wastewater. Place it for 3-72 hours or longer, at this time, after analysis and detection, the salinity of pure water is continuously increasing to a salinity level of 50--100 or higher, and the greening sodium salt with increasing salinity is recovered aqueous solution.
3、这些回收的盐水溶液因为不含有氨基酸、蛋白质、脂肪等以及其他有机杂质，因而没有原榨菜溶液的榨菜味道且不容易滋生细菌而导致的腐烂，可以再往其中添加一定量的氯化钠固体盐分而继续用于新一轮榨菜生产中的第一次腌制，也可用于榨菜生产过程中需要的相对低盐分的第二次腌制和第三次腌制中的生产用氯化钠盐水。3. Because these recovered brine solutions do not contain amino acids, proteins, fats, etc. and other organic impurities, they do not have the mustard taste of the original mustard solution and are not prone to rot caused by bacteria. You can add a certain amount of sodium chloride to it Solid salt is used for the first pickling in a new round of mustard mustard production, and it can also be used for the relatively low-salt second pickling and third pickling in the production of mustard mustard. brine.
4、所用的原盐水和纯水的量可以根据原盐水的量来进行调节，不限于1000L，尤其是实际生产过程，可根据实际生产变化而变化。4. The amount of raw brine and pure water used can be adjusted according to the amount of raw brine, not limited to 1000L, especially the actual production process, which can be changed according to actual production changes.
5、高盐有机盐水在容器中密封放置的时间也可以根据实际生产温度的变化而变化。因为温度高时，溶液中离子的活性相对大，离子通过半透膜透析袋的速度相对要快，因而可溶性盐分离子通过半透膜透析袋所用时间变短。5. The time for the high-salt organic brine to be sealed in the container can also vary according to the actual production temperature. Because when the temperature is high, the activity of ions in the solution is relatively large, and the speed of ions passing through the semi-permeable membrane dialysis bag is relatively fast, so the time for soluble salt ions to pass through the semi-permeable membrane dialysis bag is shortened.
以上所述仅是对本发明的较佳实施例而已，并非对本发明作任何形式上的限制，凡是依据本发明的技术实质对以上实施例所做的任何简单修改，等同变化与修饰，均属于本发明技术方案的范围内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Any simple modifications made to the above embodiments according to the technical essence of the present invention, equivalent changes and modifications, all belong to this invention. within the scope of the technical solution of the invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810078646.XACN108128851B (en) | 2018-01-26 | 2018-01-26 | Method for recycling sodium chloride solution in high-salt preserved szechuan pickle wastewater |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810078646.XACN108128851B (en) | 2018-01-26 | 2018-01-26 | Method for recycling sodium chloride solution in high-salt preserved szechuan pickle wastewater |
| Publication Number | Publication Date |
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| CN108128851Atrue CN108128851A (en) | 2018-06-08 |
| CN108128851B CN108128851B (en) | 2024-01-26 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810078646.XAActiveCN108128851B (en) | 2018-01-26 | 2018-01-26 | Method for recycling sodium chloride solution in high-salt preserved szechuan pickle wastewater |
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| CN (1) | CN108128851B (en) |
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