CN103896381B - A kind of method that waste liquid utilized in activated clay production prepares PAFC - Google Patents
A kind of method that waste liquid utilized in activated clay production prepares PAFC Download PDFInfo
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- CN103896381B CN103896381B CN201410140693.4A CN201410140693A CN103896381B CN 103896381 B CN103896381 B CN 103896381B CN 201410140693 A CN201410140693 A CN 201410140693A CN 103896381 B CN103896381 B CN 103896381B
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- calcium aluminate
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- 239000007788 liquid Substances 0.000 title claims abstract description 41
- 239000002699 waste material Substances 0.000 title claims abstract description 23
- 239000004927 clay Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 24
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 claims abstract description 17
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 7
- 239000000047 product Substances 0.000 claims description 17
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 16
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 239000006228 supernatant Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 8
- 239000012263 liquid product Substances 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 5
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 5
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 5
- CYUOWZRAOZFACA-UHFFFAOYSA-N aluminum iron Chemical compound [Al].[Fe] CYUOWZRAOZFACA-UHFFFAOYSA-N 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 abstract description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 12
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 239000004411 aluminium Substances 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 description 10
- 239000002253 acid Substances 0.000 description 9
- 239000011259 mixed solution Substances 0.000 description 5
- 239000000701 coagulant Substances 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 229910000278 bentonite Inorganic materials 0.000 description 3
- 239000000440 bentonite Substances 0.000 description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 3
- -1 iron ions Chemical class 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 239000012716 precipitator Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- KCZFLPPCFOHPNI-UHFFFAOYSA-N alumane;iron Chemical compound [AlH3].[Fe] KCZFLPPCFOHPNI-UHFFFAOYSA-N 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical class [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 229920000592 inorganic polymer Polymers 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 159000000014 iron salts Chemical class 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010812 mixed waste Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Description
技术领域technical field
本发明涉及水处理剂的生产方法领域，具体涉及一种利用活性白土生产中的废液制备聚合氯化铝铁的方法。The invention relates to the field of production methods of water treatment agents, in particular to a method for preparing polyaluminum ferric chloride by utilizing waste liquid in activated clay production.
背景技术Background technique
聚合氯化铝铁（PAFC）是由铝盐和铁盐混凝水解而成一种无机高分子混凝剂，依据协同增效原理，加入单质铁离子或三氧化铁和其它含铁化合物复合而制得的一种新型高效混凝剂。Polyaluminum ferric chloride (PAFC) is an inorganic polymer coagulant formed by the coagulation and hydrolysis of aluminum and iron salts. According to the principle of synergy, it is made by adding elemental iron ions or iron trioxide and other iron-containing compounds. A new type of high-efficiency coagulant.
它集铝盐和铁盐各自优点，对铝离子和铁离子的形态都有明显改善，聚合程度大为提高。取铝、铁混凝剂各自对气浮操作有利之处，改善聚合氯化铝的混凝性能；对高浊度水和低温低浊水的净化处理效果特别明显，可不加碱性助剂或其它助凝剂。It integrates the respective advantages of aluminum salt and iron salt, significantly improves the morphology of aluminum ions and iron ions, and greatly improves the degree of polymerization. Take advantage of aluminum and iron coagulants for air flotation operation to improve the coagulation performance of polyaluminum chloride; the purification treatment effect on high turbidity water and low temperature and low turbidity water is particularly obvious, and it is not necessary to add alkaline additives or Other coagulants.
目前制备高效活性白土的方法大多采用湿法、半湿法的制备工艺。将水、酸和膨润土按一定比例在反应器中混合，在一定摄氏度下加热一定时间后，然后经洗涤，烘干，粉碎的活性白土。其耗酸量大，生产成本高，过程产生大量的酸性废水，需要碱性物质中和处理，再排放，直接造成污染环境。At present, most of the methods for preparing high-efficiency activated clay use wet and semi-wet methods. Mix water, acid and bentonite in a reactor in a certain proportion, heat at a certain degree Celsius for a certain period of time, then wash, dry, and pulverize activated clay. It consumes a lot of acid, and the production cost is high. The process produces a large amount of acid wastewater, which needs to be neutralized by alkaline substances, and then discharged, directly causing environmental pollution.
活性白土的性能与酸浓度高低、量大小有关，经研究报道，以酸浓度高、量大生产出的活性白土性能越好，但是过程产生大量的废酸和铝铁盐，难以处理，污染环境，如何很好解决废酸水的污染是有待解决的问题。The performance of activated clay is related to the acid concentration and quantity. According to research reports, the performance of activated clay produced with high acid concentration and large quantity is better, but the process produces a large amount of waste acid and aluminum iron salt, which is difficult to handle and pollutes the environment. , how to well solve the pollution of waste acid water is a problem to be solved.
聚合氯化铝的合成方法有很多种，按照原材料的不同，可分为金属铝法、活性氢氧化铝法、三氧化二铝法、氯化铝法等。但存在成本高等问题。There are many ways to synthesize polyaluminum chloride, which can be divided into metal aluminum method, activated aluminum hydroxide method, aluminum oxide method, aluminum chloride method, etc. according to different raw materials. But there are problems such as high cost.
发明内容Contents of the invention
本发明的目的在于针对现有技术的不足，提供一种利用活性白土生产中的废液制备聚合氯化铝铁的方法，可以将在制备出活性白土过程中产生的废酸水，全部回收，进行综合利用，生产出聚合氯化铝铁，是一种无污染、绿色环保的生产工艺，并变废为宝，具有很好的经济效益、环保效益、社会效益。The purpose of the present invention is to aim at the deficiencies in the prior art, provide a kind of method that utilizes the waste liquid in the production of activated clay to prepare polyaluminum ferric chloride, can fully reclaim the waste acid water produced in the process of preparing activated clay, Comprehensive utilization is carried out to produce polyaluminum ferric chloride, which is a pollution-free, green and environmentally friendly production process, which turns waste into treasure, and has good economic, environmental and social benefits.
本发明涉及的一种利用活性白土生产中的废液制备聚合氯化铝铁的方法，其特征是具体包括以下步骤：A kind of method that the present invention relates to utilizes the waste liquid in the activated clay production to prepare polyaluminum ferric chloride, it is characterized in that specifically comprising the following steps:
1）量取1000ml的混合废液，放置2500ml的反应合成池中，将废液加热，再加入定量的铝酸钙进行反应，使混合液的铝铁含量、盐基度和pH值达到一定程度。1) Measure 1000ml of mixed waste liquid, place it in a 2500ml reaction synthesis tank, heat the waste liquid, and then add a certain amount of calcium aluminate to react, so that the aluminum and iron content, basicity and pH value of the mixed liquid can reach a certain level .
2）加完铝酸钙后，继续保持100℃下，搅拌反应2～3h,反应结束后，将合成液送至成品沉清器，沉降后，将上层清液放入成品器，即为水处理剂聚氯化铝铁液体产品。2) After adding calcium aluminate, continue to keep at 100°C, stir and react for 2 to 3 hours. After the reaction, send the synthetic liquid to the finished product settler. After settling, put the supernatant liquid into the finished product, which is water Treatment agent polyaluminum ferric chloride liquid product.
步骤1）所述的废液加热到80-90℃。Step 1) The waste liquid is heated to 80-90°C.
步骤1）所述的定量的铝酸钙是指80～150g的铝酸钙。The quantitative calcium aluminate in step 1) refers to 80-150 g of calcium aluminate.
步骤1）所述的混合液的铝铁含量6～12%。The aluminum and iron content of the mixed solution in step 1) is 6-12%.
步骤1）所述的pH值3～5%。The pH value described in step 1) is 3-5%.
步骤2）所述的沉降是沉降2～3天。The settlement in step 2) is 2-3 days of settlement.
本发明的有益效果有效利用处理废酸，保证混合液的铝铁含量和酸度，再综合合成聚合氯化铝铁，合成的产品能达到工业级聚合氯化铝的标准，可以变废为宝，环保并实用。The beneficial effect of the present invention is to effectively use the waste acid to ensure the aluminum-iron content and acidity of the mixed solution, and then comprehensively synthesize polyaluminum ferric chloride. The synthesized product can reach the standard of industrial-grade polyaluminum chloride, and can turn waste into treasure. Environmentally friendly and practical.
具体实施方式detailed description
下面结合实施例对本发明做进一步详细说明，但不是对本发明的限制。The present invention will be described in further detail below in conjunction with the examples, but the present invention is not limited thereto.
实施例选取广西百色市田东县的优质膨润土为例进行说明，经分析广西百色市田东县的优质膨润土主要成分：Fe2O36.99%Al2O318.09%TiO20.42%CaO0.42%SiO247.6%LoSS15%，是在制备活性白土的液固分离时，添加压滤机，在酸化后经压滤机压滤分离液固。The embodiment takes the high-quality bentonite in Tiandong County, Baise City, Guangxi as an example for illustration. After analysis, the main components of high-quality bentonite in Tiandong County, Baise City, Guangxi: Fe 2 O 3 6.99%Al 2 O 3 18.09%TiO 2 0.42%CaO0.42 %SiO 2 47.6%LoSS15%, when preparing active clay for liquid-solid separation, add a filter press, and after acidification, filter the liquid and solid through the filter press.
实施例1：一种利用活性白土生产中废液制备聚合氯化铝铁的方法，具体包括以下的步骤：1）收集制备活性白土的废液和一次洗涤液混合后，分析主要成分：铝铁3.6%（氧化铝计），酸度7.5%，量取1000ml的混合液，放置2500ml的反应合成池中，边搅拌，并加热至85℃，缓慢加入130g的铝酸钙粉，主要含量：Fe2O35.85%Al2O348.09%TiO20.42%CaO32.52%SiO27.6%，投加完铝酸钙后，继续加热在100℃下保温两个小时，转移到沉淀器中冷却沉淀，上清液转移至成品器，分析上清液成分和含量，主要为铝铁总含量10.02%（氧化铝计），盐基度86.30%，pH值4%。Example 1: A method for preparing polyaluminum ferric chloride by using waste liquid in the production of activated clay, specifically comprising the following steps: 1) After collecting the waste liquid for preparing activated clay and mixing it with the primary washing liquid, analyze the main components: aluminum iron 3.6% (calculated as alumina), acidity 7.5%, measure 1000ml of the mixed solution, place it in a 2500ml reaction synthesis tank, stir while heating to 85°C, slowly add 130g of calcium aluminate powder, main content: Fe 2 O 3 5.85%Al 2 O 3 48.09%TiO 2 0.42%CaO3 2.52%SiO 2 7.6%, after adding calcium aluminate, continue to heat at 100°C for two hours, transfer to a precipitator to cool and precipitate, The supernatant is transferred to the finished product, and the composition and content of the supernatant are analyzed. The main content is 10.02% of the total aluminum and iron (calculated as alumina), the basicity is 86.30%, and the pH value is 4%.
2）加完铝酸钙后，继续保持100℃下，搅拌反应2～3h,反应结束后，将合成液送至成品沉清器，沉降3天后，将上层清液放入成品器，即为水处理剂聚氯化铝铁液体产品。2) After adding calcium aluminate, continue to keep at 100°C, stir and react for 2 to 3 hours. After the reaction is completed, send the synthetic liquid to the finished product settler. After settling for 3 days, put the supernatant liquid into the finished product. Water treatment agent polyaluminum ferric chloride liquid product.
成品与国标GB/15892-20008的比较：Comparison between the finished product and the national standard GB/15892-20008:
实施例2：一种利用活性白土生产中废液制备聚合氯化铝铁的方法，具体包括以下的步骤：Embodiment 2: a kind of method utilizing waste liquid in the production of activated clay to prepare polyaluminum ferric chloride specifically comprises the following steps:
1）收集制备活性白土的废液和一次洗涤液混合后，分析主要成分：铝铁3.6%（氧化铝计），酸度7.5%，量取1000ml的混合液，放置2500ml的反应合成池中，边搅拌，并加热至80℃，缓慢加入80g～150g的铝酸钙粉，主要含量：Fe2O35.85%Al2O348.09%TiO20.42%CaO32.52%SiO27.6%，投加完铝酸钙后，继续加热在100℃下保温两个小时，转移到沉淀器中冷却，上清液转移至成品器，分析上清液成分和含量，主要为铝铁总含量10.02%（氧化铝计），盐基度86.30%，pH值为4%。1) After collecting the waste liquid for the preparation of activated clay and mixing it with the primary washing liquid, analyze the main components: aluminum and iron 3.6% (calculated as alumina), acidity 7.5%, measure 1000ml of the mixed solution, place it in a 2500ml reaction synthesis pool, and Stir and heat to 80°C, slowly add 80g~150g of calcium aluminate powder, main content: Fe 2 O 3 5.85%Al 2 O 3 48.09%TiO 2 0.42%CaO3 2.52%SiO 2 7.6%, after adding After calcium aluminate, continue to heat at 100°C for two hours, transfer to a precipitator for cooling, transfer the supernatant to the finished product, analyze the composition and content of the supernatant, the main content is 10.02% of the total content of aluminum and iron (alumina meter), the salinity is 86.30%, and the pH is 4%.
2）加完铝酸钙后，继续保持100℃下，搅拌2～3h,反应结束后，将合成液送至成品沉清器，沉降3天后，将上层清液放入成品器，即为水处理剂聚氯化铝铁液体产品。2) After adding calcium aluminate, continue to keep at 100°C and stir for 2 to 3 hours. After the reaction is over, send the synthetic liquid to the finished product settler. After settling for 3 days, put the supernatant liquid into the finished product, which is water Treatment agent polyaluminum ferric chloride liquid product.
成品与国标GB/15892-20008的比较：Comparison between the finished product and the national standard GB/15892-20008:
实施例3一种利用活性白土生产中废液制备聚合氯化铝铁的方法，具体包括以下的步骤：1）收集制备活性白土的废液和一次洗涤液混合后，分析主要成分：铝铁3.6%（氧化铝计），酸度7.5%，量取1000ml的混合液，放置2500ml的反应合成池中，边搅拌，并加热至90℃，缓慢加入150g的铝酸钙粉，主要含量：Fe2O35.85%Al2O348.09%TiO20.42%CaO32.52%SiO27.6%，投加完铝酸钙后，继续加热在100℃下保温两个小时，转移到沉淀器中冷却，上清液转移至成品器，分析上清液成分和含量，主要为铝铁总含量10.02%（氧化铝计），盐基度86.30%，pH值4%Example 3 A method for preparing polyaluminum ferric chloride by using waste liquid in the production of activated clay, which specifically includes the following steps: 1) After collecting the waste liquid for preparing activated clay and mixing it with the primary washing liquid, analyze the main components: aluminum iron 3.6 % (calculated as alumina), acidity 7.5%, measure 1000ml of the mixed solution, place it in a 2500ml reaction synthesis tank, stir, and heat to 90°C, slowly add 150g of calcium aluminate powder, main content: Fe 2 O 3 5.85%Al 2 O 3 48.09%TiO 2 0.42%CaO3 2.52%SiO 2 7.6%, after adding calcium aluminate, continue to heat and keep at 100°C for two hours, transfer to a sedimentator to cool, supernatant The liquid is transferred to the finished product, and the composition and content of the supernatant are analyzed, mainly the total content of aluminum and iron is 10.02% (calculated as alumina), the basicity is 86.30%, and the pH value is 4%.
2）加完铝酸钙后，继续保持100℃下，搅拌2～3h,反应结束后，将合成液送至成品沉清器，沉降3天后，将上层清液放入成品器，即为水处理剂聚氯化铝铁液体产品。2) After adding calcium aluminate, continue to keep at 100°C and stir for 2 to 3 hours. After the reaction is over, send the synthetic liquid to the finished product settler. After settling for 3 days, put the supernatant liquid into the finished product, which is water Treatment agent polyaluminum ferric chloride liquid product.
成品与国标GB/15892-20008的比较：Comparison between the finished product and the national standard GB/15892-20008:
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| CN104925824B (en) * | 2015-06-11 | 2017-09-29 | 何经 | A kind of production method of atlapulgite |
| CN106430321B (en) * | 2016-08-31 | 2018-03-23 | 海南宜净环保股份有限公司 | Method for synthesizing polyaluminum ferric chloride |
| CN106745968B (en) * | 2016-12-05 | 2020-08-04 | 百色学院 | Method for treating micro-polluted water |
| CN109110958A (en) * | 2018-08-30 | 2019-01-01 | 黄山市白岳活性白土有限公司 | A kind of hydrochloric acid production atlapulgite waste water treatment process |
| CN115108572A (en) * | 2022-04-18 | 2022-09-27 | 重庆市宇洁化工有限公司 | Polyaluminium chloride production method suitable for purifying various water qualities |
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| CN1463929A (en) * | 2002-06-06 | 2003-12-31 | 曹万印 | Process for producing composite coagulant polymeric aluminium chloride ferrum |
| CN101215032A (en) * | 2008-01-21 | 2008-07-09 | 合肥工业大学 | A kind of production method of inorganic polymer flocculant polyaluminum ferric chloride |
| CN101602517A (en) * | 2009-07-08 | 2009-12-16 | 东莞市华清净水技术有限公司 | Polyaluminium chloride molten iron treating agent and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1463929A (en) * | 2002-06-06 | 2003-12-31 | 曹万印 | Process for producing composite coagulant polymeric aluminium chloride ferrum |
| CN101215032A (en) * | 2008-01-21 | 2008-07-09 | 合肥工业大学 | A kind of production method of inorganic polymer flocculant polyaluminum ferric chloride |
| CN101602517A (en) * | 2009-07-08 | 2009-12-16 | 东莞市华清净水技术有限公司 | Polyaluminium chloride molten iron treating agent and preparation method thereof |
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