CN101486520B - A method for treating heavy metal wastewater - Google Patents
A method for treating heavy metal wastewater Download PDFInfo
- Publication number
- CN101486520B CN101486520B CN2009101032687A CN200910103268A CN101486520B CN 101486520 B CN101486520 B CN 101486520B CN 2009101032687 A CN2009101032687 A CN 2009101032687A CN 200910103268 A CN200910103268 A CN 200910103268A CN 101486520 B CN101486520 B CN 101486520B
- Authority
- CN
- China
- Prior art keywords
- heavy metal
- wastewater
- metal wastewater
- chlorinated
- chlorinated organic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 71
- 239000002351 wastewater Substances 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000003756 stirring Methods 0.000 claims abstract description 9
- 239000005416 organic matter Substances 0.000 claims abstract description 8
- 229920001021 polysulfide Polymers 0.000 claims abstract description 5
- 239000005077 polysulfide Substances 0.000 claims abstract description 5
- 150000008117 polysulfides Polymers 0.000 claims abstract description 5
- 238000001556 precipitation Methods 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 3
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 3
- 150000001336 alkenes Chemical class 0.000 claims description 3
- 239000012989 trithiocarbonate Substances 0.000 claims description 3
- 238000003672 processing method Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 239000010815 organic waste Substances 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 230000001376 precipitating effect Effects 0.000 abstract 1
- 239000010842 industrial wastewater Substances 0.000 description 15
- 239000011572 manganese Substances 0.000 description 12
- 239000010949 copper Substances 0.000 description 10
- 239000011651 chromium Substances 0.000 description 9
- 239000002244 precipitate Substances 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 7
- 238000012795 verification Methods 0.000 description 6
- 239000011701 zinc Substances 0.000 description 6
- 238000005070 sampling Methods 0.000 description 5
- USAIOOFEIMNEDN-UHFFFAOYSA-L disodium;carbonotrithioate Chemical compound [Na+].[Na+].[S-]C([S-])=S USAIOOFEIMNEDN-UHFFFAOYSA-L 0.000 description 4
- RELMFMZEBKVZJC-UHFFFAOYSA-N 1,2,3-trichlorobenzene Chemical compound ClC1=CC=CC(Cl)=C1Cl RELMFMZEBKVZJC-UHFFFAOYSA-N 0.000 description 3
- OCJBOOLMMGQPQU-UHFFFAOYSA-N 1,4-dichlorobenzene Chemical compound ClC1=CC=C(Cl)C=C1 OCJBOOLMMGQPQU-UHFFFAOYSA-N 0.000 description 3
- VBXGCJOCXXXPPE-UHFFFAOYSA-D C([O-])([O-])=S.C([O-])([O-])=S.C([O-])([O-])=S.C([O-])([O-])=S.C([O-])([O-])=S.[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+] Chemical compound C([O-])([O-])=S.C([O-])([O-])=S.C([O-])([O-])=S.C([O-])([O-])=S.C([O-])([O-])=S.[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+] VBXGCJOCXXXPPE-UHFFFAOYSA-D 0.000 description 3
- 150000001555 benzenes Chemical class 0.000 description 3
- KCXMKQUNVWSEMD-UHFFFAOYSA-N benzyl chloride Chemical compound ClCC1=CC=CC=C1 KCXMKQUNVWSEMD-UHFFFAOYSA-N 0.000 description 3
- 229940117389 dichlorobenzene Drugs 0.000 description 3
- 239000010814 metallic waste Substances 0.000 description 3
- -1 polythio Polymers 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- GBQWGHDWLUYAEG-UHFFFAOYSA-N 1,1,1,2,2-pentachlorobutane Chemical compound CCC(Cl)(Cl)C(Cl)(Cl)Cl GBQWGHDWLUYAEG-UHFFFAOYSA-N 0.000 description 1
- UAZUEJTXWAXSMA-UHFFFAOYSA-N 1,1-dichlorobut-1-ene Chemical compound CCC=C(Cl)Cl UAZUEJTXWAXSMA-UHFFFAOYSA-N 0.000 description 1
- PDKAXHLOFWCWIH-UHFFFAOYSA-N 1,1-dichlorobuta-1,3-diene Chemical compound ClC(Cl)=CC=C PDKAXHLOFWCWIH-UHFFFAOYSA-N 0.000 description 1
- WSPZFVOCHITLIY-UHFFFAOYSA-N 2,2,3,3-tetrachlorobutane Chemical compound CC(Cl)(Cl)C(C)(Cl)Cl WSPZFVOCHITLIY-UHFFFAOYSA-N 0.000 description 1
- AKQZPPKQVZVYCC-UHFFFAOYSA-N 4,4,4-trichlorobut-1-ene Chemical compound ClC(Cl)(Cl)CC=C AKQZPPKQVZVYCC-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005486 sulfidation Methods 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- HIZCIEIDIFGZSS-UHFFFAOYSA-L trithiocarbonate Chemical compound [S-]C([S-])=S HIZCIEIDIFGZSS-UHFFFAOYSA-L 0.000 description 1
Landscapes
- Removal Of Specific Substances (AREA)
Abstract
一种处理重金属废水的方法。它包括两个主要过程：首先，收集利用氯代有机废水，把它和多硫代碳酸盐溶液按照1∶2重量百分比充分混合，并调节pH值为10～11；在微波作用下充分搅拌，以合成出多硫代有机物。然后，再把该多硫代有机物作为沉淀剂，按照1.0％～2.0％的重量百分比，均匀混合进待处理的重金属废水中，以得到含重金属的絮状沉淀。本发明不会带来二次污染，操作简单、处理效率高，不但具有以废治废、成本低廉的优点，而且也利于重金属的回收。A method for treating heavy metal wastewater. It includes two main processes: first, collect and utilize chlorinated organic waste water, mix it fully with polythiocarbonate solution according to 1:2 weight percentage, and adjust the pH value to 10-11; fully stir under the action of microwave , to synthesize polythioorganic compounds. Then, the polysulfide organic matter is used as a precipitating agent, and is uniformly mixed into the heavy metal wastewater to be treated according to the weight percentage of 1.0% to 2.0%, so as to obtain a flocculent precipitation containing heavy metal. The invention does not cause secondary pollution, has simple operation and high treatment efficiency, not only has the advantages of treating waste with waste and low cost, but also facilitates the recovery of heavy metals.
Description
技术领域technical field
本发明涉及对重金属废水的处理。The invention relates to the treatment of heavy metal wastewater.
背景技术Background technique
重金属(汞、镉、铅、铬等)废水，在浓度极低的情况下也仍有较强的毒性，因此，有效地去除废水中重金属就成为环保的需要；又由于重金属比较昂贵，在消除污染的同时，还要考虑到重金属的回收和资源化再利用的问题。Heavy metal (mercury, cadmium, lead, chromium, etc.) wastewater is still highly toxic even at extremely low concentrations. Therefore, effective removal of heavy metals in wastewater has become a need for environmental protection; While polluting, the recovery and recycling of heavy metals must also be considered.
目前，重金属废水的处理和资源化利用方法很多，它们各有优缺点，硫化法就是其中之一。现有硫化法的不足在于：在处理时容易受pH值的影响而产生硫化氢，造成二次污染；在重金属回收方面，其重金属硫化物沉淀颗粒也较小，不利于回收。At present, there are many methods for the treatment and resource utilization of heavy metal wastewater, each of which has its own advantages and disadvantages, and the sulfuration method is one of them. The disadvantage of the existing sulfidation method is that hydrogen sulfide is easily affected by the pH value during processing, causing secondary pollution; in terms of heavy metal recovery, the precipitated particles of heavy metal sulfide are also small, which is not conducive to recovery.
发明内容Contents of the invention
本发明要解决的技术问题是，提供一种成本低廉、无二次污染、且有利于资源化利用的处理重金属废水的方法。The technical problem to be solved by the present invention is to provide a method for treating heavy metal wastewater with low cost, no secondary pollution, and favorable resource utilization.
解决所述技术问题的方案是这样一种处理重金属废水的方法，它包括如下步骤：The scheme that solves described technical problem is such a kind of method for processing heavy metal waste water, and it comprises the steps:
(1)收集氯代有机废水、并检测其氯离子摩尔浓度，调节到0.05mol/L～0.15mol/L；(1) Collect chlorinated organic wastewater, and detect its chloride ion molar concentration, and adjust it to 0.05mol/L～0.15mol/L;
(2)用浓度为0.9mol/L多硫代碳酸盐溶液与氯代有机废水充分混合，调节pH值到10～11，其中，多硫代碳酸盐溶液与氯代有机废水的容积比为2∶1；(2) Fully mix the polythiocarbonate solution with the chlorinated organic wastewater with a concentration of 0.9mol/L, adjust the pH value to 10-11, wherein the volume ratio of the polythiocarbonate solution to the chlorinated organic wastewater is 2:1;
(3)在微波作用下搅拌30～60min，其中，微波频率为2000～2800MHz，微波功率为600～1000W，反应温度为60～100℃；(3) stirring for 30 to 60 minutes under the action of microwaves, wherein the microwave frequency is 2000 to 2800 MHz, the microwave power is 600 to 1000 W, and the reaction temperature is 60 to 100 ° C;
(4)得多硫代有机物，沉淀、过滤取出，并把其作为处理重金属废水的沉淀剂备用；(4) There are many thioorganic substances, which are precipitated, filtered and taken out, and used as a precipitant for the treatment of heavy metal wastewater;
(5)往重金属废水中添加多硫代有机物，混合均匀，静置后取出含重金属的絮状沉淀。其中，多硫代有机物与重金属废水的重量百分比，根据重金属废水中所含残留重金属的重量百分比在1.0％～2.0％之间选择。(5) Add polysulfide organic matter to the heavy metal wastewater, mix well, and take out the flocculent precipitate containing heavy metal after standing. Wherein, the weight percent of polythioorganic matter and heavy metal wastewater is selected between 1.0% and 2.0% according to the weight percent of residual heavy metal contained in the heavy metal wastewater.
从方案中可以看出，本发明与现有技术相比较有如下优点：As can be seen from the scheme, the present invention has the following advantages compared with the prior art:
1、由于采用氯代有机废水作原料来制备处理重金属废水的沉淀剂的，所以，既对氯代有机废水进行了无害化处理，又使其得到了充分利用，不但成本低廉，而且有以废治废、变废为宝的效果；1. Since the chlorinated organic wastewater is used as the raw material to prepare the precipitant for the treatment of heavy metal wastewater, the chlorinated organic wastewater has been harmlessly treated and fully utilized, which is not only low in cost, but also has The effect of treating waste and turning waste into treasure;
2、由于是用多硫代有机物作为处理重金属废水的沉淀剂，所以，不但避免了因硫化氢的产生所造成的二次污染，而且操作简单；2. Since polysulfide organic matter is used as a precipitant to treat heavy metal wastewater, it not only avoids the secondary pollution caused by the generation of hydrogen sulfide, but also is easy to operate;
3、由于含重金属的絮状沉淀的溶度积较小且颗粒较大，所以经处理后的重金属废水不仅很容易达到国家的排放标准，同时，能够快速沉降以提高处理效率，也利于重金属的回收。3. Due to the small solubility product and large particles of flocculent precipitates containing heavy metals, the treated heavy metal wastewater not only easily meets the national discharge standards, but also can settle quickly to improve the treatment efficiency, which is also conducive to the removal of heavy metals. Recycle.
具体实施方式Detailed ways
一种处理重金属废水的方法。该处理方法包括如下步骤：A method for treating heavy metal wastewater. The processing method includes the following steps:
(1)收集氯代有机废水、并检测其氯离子摩尔浓度，调节到0.05mol/L～0.15mol/L；(1) Collect chlorinated organic wastewater, and detect its chloride ion molar concentration, and adjust it to 0.05mol/L～0.15mol/L;
(2)用浓度为0.9mol/L多硫代碳酸盐溶液与氯代有机废水充分混合，调节pH值到10～11，其中，多硫代碳酸盐溶液与氯代有机废水的容积比为2∶1；(2) Fully mix the polythiocarbonate solution with the chlorinated organic wastewater with a concentration of 0.9mol/L, adjust the pH value to 10-11, wherein the volume ratio of the polythiocarbonate solution to the chlorinated organic wastewater is 2:1;
(3)在微波作用下搅拌30～60min，其中，微波频率为2000～2800MHz，微波功率为600～1000W，反应温度为60～100℃；(3) stirring for 30 to 60 minutes under the action of microwaves, wherein the microwave frequency is 2000 to 2800 MHz, the microwave power is 600 to 1000 W, and the reaction temperature is 60 to 100 ° C;
(4)得多硫代有机物，沉淀、过滤取出，并把其作为处理重金属废水的沉淀剂备用；(4) There are many thioorganic substances, which are precipitated, filtered and taken out, and used as a precipitant for the treatment of heavy metal wastewater;
(5)往重金属废水中添加多硫代有机物，混合均匀，静置后取出含重金属的絮状沉淀。其中，多硫代有机物与重金属废水的重量百分比，根据重金属废水中所含残留重金属的重量百分比在1.0％～2.0％之间选择(本领域技术人员清楚，应当以能够使重金属沉淀完全为度)。重金属废水中，所残留重金属为汞(Hg)、锰(Mn)、铜(Cu)、锌(Zn)、镍(Ni)、铬(Cr)、镉(Cd)、钴(Co)等中一种或多种。(5) Add polysulfide organic matter to the heavy metal wastewater, mix well, and take out the flocculent precipitate containing heavy metal after standing. Wherein, the percentage by weight of polythioorganic matter and heavy metal waste water is selected between 1.0%～2.0% according to the weight percentage of residual heavy metal contained in the heavy metal waste water (those skilled in the art are clear, should be the degree that can make heavy metal precipitation completely) . In heavy metal wastewater, the residual heavy metals are mercury (Hg), manganese (Mn), copper (Cu), zinc (Zn), nickel (Ni), chromium (Cr), cadmium (Cd), cobalt (Co), etc. one or more species.
进一步讲，在步骤(1)中收集的氯代有机废水，是含氯代烷烃、氯代烯烃和氯代芳香烃中的一种、两种或多种的废水。Further speaking, the chlorinated organic wastewater collected in step (1) is wastewater containing one, two or more of chlorinated alkanes, chlorinated olefins and chlorinated aromatics.
更进一步讲，在步骤(1)中，其氯代有机废水调节后的浓度为0.125mol/L。Furthermore, in step (1), the adjusted concentration of the chlorinated organic wastewater is 0.125mol/L.
再进一步讲，步骤(2)中的多硫代碳酸盐是三硫代碳酸盐、或五硫代碳酸盐。本领域的技术人员十分清楚，在选用多硫代碳酸盐时，肯定是要选择可溶性的，例如：三硫代碳酸钠(Na2CS3)、五硫代碳酸钠(Na2CS5)等。Further speaking, the polythiocarbonate in step (2) is trithiocarbonate or pentathiocarbonate. Those skilled in the art are very clear that when selecting polythiocarbonate, it must be soluble, for example: sodium trithiocarbonate (Na 2 CS 3 ), sodium pentathiocarbonate (Na 2 CS 5 ) wait.
为利于本领域技术人员更好地理解本发明，把本发明的实验验证过程与结果披露如下：For the benefit of those skilled in the art to better understand the present invention, the experimental verification process and results of the present invention are disclosed as follows:
验证例1Verification example 1
制备多硫代有机物：Preparation of polythioorganics:
(1)收集重庆某企业氯代有机废水(主要含有不饱和氯代烯烃如二氯丁烯、三氯丁烯、二氯丁二烯等)，采样分析后把其浓度调节到0.05mol/L；(1) Collect chlorinated organic wastewater from an enterprise in Chongqing (mainly containing unsaturated chlorinated olefins such as dichlorobutene, trichlorobutene, dichlorobutadiene, etc.), and adjust its concentration to 0.05mol/L after sampling and analysis ;
(2)将浓度为0.9mol/L的三硫代碳酸钠溶液，按照2∶1的容积比与氯代有机废水充分混合，调节pH值到10～11；(2) The sodium trithiocarbonate solution that concentration is 0.9mol/L, according to the volume ratio of 2: 1 fully mixes with chlorinated organic waste water, adjusts pH value to 10～11;
(3)在微波作用下搅拌60min，其中，微波频率为2000MHz，微波功率为600W，反应温度为60℃；(3) Stirring for 60 minutes under the action of microwaves, wherein the microwave frequency is 2000MHz, the microwave power is 600W, and the reaction temperature is 60°C;
(4)得多硫代有机物，沉淀、过滤取出，并作为处理重金属废水的沉淀剂备用。(4) There are many thioorganic substances, which are precipitated, filtered and taken out, and used as a precipitant for processing heavy metal wastewater for subsequent use.
处理重金属废水：Treatment of heavy metal wastewater:
(5)本例重金属废水是，残留重金属含量为Mn：309.5、Cu：88.4、Zn：75.4、Ni：45.4(mg/L)的工业废水。按照与该工业废水1.0％的重量百分比，把步骤(4)合成的多硫代有机物添加进去，混合均匀，静置后取出含其中的絮状沉淀。(5) The heavy metal wastewater in this example is industrial wastewater with residual heavy metal contents of Mn: 309.5, Cu: 88.4, Zn: 75.4, Ni: 45.4 (mg/L). According to the weight percentage of 1.0% of the industrial wastewater, the polythioorganic matter synthesized in the step (4) is added in, mixed evenly, and the flocculent precipitate contained therein is taken out after standing.
检测经处理的工业废水，其中残留重金属的含量为Mn：0.98、Cu：0.45、Zn：0.74、Ni：0.31(mg/L)，达到国家的排放标准。After testing the treated industrial wastewater, the residual heavy metal content is Mn: 0.98, Cu: 0.45, Zn: 0.74, Ni: 0.31 (mg/L), which meets the national discharge standard.
验证例二Verification example two
(1)对重庆某企业氯代有机废水(主要含有多氯代烷烃如四氯丁烷、五氯丁烷等)进行采样分析后把其浓度调节到0.075mol/L；(1) Sampling and analyzing the chlorinated organic waste water (mainly containing polychlorinated alkanes such as tetrachlorobutane, pentachlorobutane, etc.) of a certain enterprise in Chongqing to adjust its concentration to 0.075mol/L;
(2)将浓度为0.9mol/L的三硫代碳酸钠溶液，按照2∶1的容积比与氯代有机废水充分混合，调节pH值到10～11；(2) The sodium trithiocarbonate solution that concentration is 0.9mol/L, according to the volume ratio of 2: 1 fully mixes with chlorinated organic waste water, adjusts pH value to 10～11;
(3)在微波作用下搅拌55min，其中，微波频率为2200MHz，微波功率为700W，反应温度为70℃；(3) Stirring for 55min under the action of microwave, wherein the microwave frequency is 2200MHz, the microwave power is 700W, and the reaction temperature is 70°C;
(4)得多硫代有机物，沉淀、过滤取出，并作为处理重金属废水的沉淀剂备用。(4) There are many thioorganic substances, which are precipitated, filtered and taken out, and used as a precipitant for processing heavy metal wastewater for subsequent use.
处理重金属废水：Treatment of heavy metal wastewater:
(5)本例重金属废水是，残留重金属含量为Mn：208.4、Cr：112.5、Zn：92.5、Co：37.3(mg/L)的工业废水。按照与该工业废水1.2％的重量百分比，把步骤(4)合成的多硫代有机物添加进去，混合均匀，静置后取出含其中的絮状沉淀。(5) The heavy metal wastewater in this example is industrial wastewater with residual heavy metal contents of Mn: 208.4, Cr: 112.5, Zn: 92.5, Co: 37.3 (mg/L). According to the weight percentage of 1.2% of the industrial waste water, the polythio organic matter synthesized in the step (4) is added in, mixed evenly, and the flocculent precipitate contained therein is taken out after standing.
检测经处理的工业废水，其中残留重金属的含量为Mn：0.55、Cr：0.055、Zn：0.28、Co：0.27(mg/L)，达到国家的排放标准。After testing the treated industrial wastewater, the residual heavy metal content is Mn: 0.55, Cr: 0.055, Zn: 0.28, Co: 0.27 (mg/L), which meets the national discharge standard.
验证例三Verification example three
(1)对重庆某企业的氯代有机废水(主要含有氯代芳烃如二氯苯、三氯苯、氯甲苯及其主要衍生物硝基氯化苯等)进行采样分析后把其浓度调节到0.1mol/L；(1) Sampling and analyzing the chlorinated organic wastewater (mainly containing chlorinated aromatics such as dichlorobenzene, trichlorobenzene, chlorotoluene and its main derivative nitrochlorinated benzene, etc.) of a certain enterprise in Chongqing and adjusting its concentration to 0.1mol/L;
(2)将浓度为0.9mol/L的三硫代碳酸钠溶液，按照2∶1的容积比与氯代有机废水充分混合，调节pH值到10～11；(2) The sodium trithiocarbonate solution that concentration is 0.9mol/L, according to the volume ratio of 2: 1 fully mixes with chlorinated organic waste water, adjusts pH value to 10～11;
(3)在微波作用下搅拌50min，其中，微波频率为2400MHz，微波功率为800W，反应温度为80℃；(3) Stirring for 50 minutes under the action of microwaves, wherein the microwave frequency is 2400MHz, the microwave power is 800W, and the reaction temperature is 80°C;
(4)得多硫代有机物，沉淀、过滤取出，并作为处理重金属废水的沉淀剂备用。(4) There are many thioorganic substances, which are precipitated, filtered and taken out, and used as a precipitant for processing heavy metal wastewater for subsequent use.
处理重金属废水：Treatment of heavy metal wastewater:
(5)本例重金属废水是，残留重金属含量为Cu：312.5、Cr：104.6、Mn：77.3、Cd：49.5(mg/L)的工业废水。按照与该工业废水1.5％的重量百分比，把步骤(4)合成的多硫代有机物添加进去，混合均匀，静置后取出含其中的絮状沉淀。(5) The heavy metal wastewater in this example is industrial wastewater with residual heavy metal contents of Cu: 312.5, Cr: 104.6, Mn: 77.3, and Cd: 49.5 (mg/L). According to the weight percentage of 1.5% of the industrial waste water, the polythio organic matter synthesized in the step (4) is added in, mixed evenly, and the flocculent precipitate contained therein is taken out after standing.
检测经处理的工业废水，其中残留重金属的含量为Cu：0.35、Cr：0.23、Mn：0.793、Cd：0.059(mg/L)，达到国家的排放标准。After testing the treated industrial wastewater, the residual heavy metal content is Cu: 0.35, Cr: 0.23, Mn: 0.793, Cd: 0.059 (mg/L), which meets the national discharge standard.
验证例四Verification example four
(1)对重庆某企业的氯代有机废水(主要含有氯代芳烃如二氯苯、三氯苯、氯甲苯及其主要衍生物硝基氯化苯等)进行采样分析后把其浓度调节到0.125mol/L；(1) Sampling and analyzing the chlorinated organic wastewater (mainly containing chlorinated aromatics such as dichlorobenzene, trichlorobenzene, chlorotoluene and its main derivative nitrochlorinated benzene, etc.) of a certain enterprise in Chongqing and adjusting its concentration to 0.125mol/L;
(2)将浓度为0.9mol/L的五硫代碳酸钠溶液，按照2∶1的容积比与氯代有机废水充分混合，调节pH值到10～11；(2) the sodium pentathiocarbonate solution that concentration is 0.9mol/L, according to the volume ratio of 2: 1 fully mixes with chlorinated organic waste water, adjusts pH value to 10～11;
(3)在微波作用下搅拌45min，其中，微波频率为2600MHz，微波功率为900W，反应温度为90℃；(3) stirring for 45min under the action of microwave, wherein the microwave frequency is 2600MHz, the microwave power is 900W, and the reaction temperature is 90°C;
(4)得多硫代有机物，沉淀、过滤取出，并作为处理重金属废水的沉淀剂备用。(4) There are many thioorganic substances, which are precipitated, filtered and taken out, and used as a precipitant for processing heavy metal wastewater for subsequent use.
处理重金属废水：Treatment of heavy metal wastewater:
(5)本例重金属废水是，残留重金属含量为Cr：332.5、Cu：114.6、Mn：87.3、Ni：38.5(mg/L)的工业废水。按照与该工业废水1.7％的重量百分比，把步骤(4)合成的多硫代有机物添加进去，混合均匀，静置后取出含其中的絮状沉淀。(5) The heavy metal wastewater in this example is industrial wastewater with residual heavy metal contents of Cr: 332.5, Cu: 114.6, Mn: 87.3, Ni: 38.5 (mg/L). According to the weight percentage of 1.7% of the industrial waste water, the polythio organic matter synthesized in the step (4) is added in, mixed evenly, and the flocculent precipitate contained therein is taken out after standing.
检测经处理的工业废水，其中残留重金属的含量为Cr：0.236、Cu：0.46、Mn：0.15、Ni：0.21(mg/L)，达到国家的排放标准。After testing the treated industrial wastewater, the residual heavy metal content is Cr: 0.236, Cu: 0.46, Mn: 0.15, Ni: 0.21 (mg/L), which meets the national discharge standard.
验证例五Verification example five
(1)对重庆某企业的氯代有机废水(主要含有氯代芳烃如二氯苯、三氯苯、氯甲苯及其主要衍生物硝基氯化苯等)进行采样分析后把其浓度调节到0.15mol/L；(1) Sampling and analyzing the chlorinated organic wastewater (mainly containing chlorinated aromatics such as dichlorobenzene, trichlorobenzene, chlorotoluene and its main derivative nitrochlorinated benzene, etc.) of a certain enterprise in Chongqing and adjusting its concentration to 0.15mol/L;
(2)将浓度为0.9mol/L的五硫代碳酸钠溶液，按照2∶1的容积比与氯代有机废水充分混合，调节pH值到10～11；(2) the sodium pentathiocarbonate solution that concentration is 0.9mol/L, according to the volume ratio of 2: 1 fully mixes with chlorinated organic waste water, adjusts pH value to 10～11;
(3)在微波作用下搅拌30min，其中，微波频率为2800MHz，微波功率为1000W，反应温度为100℃；(3) Stirring for 30 minutes under the action of microwaves, wherein the microwave frequency is 2800MHz, the microwave power is 1000W, and the reaction temperature is 100°C;
(4)得多硫代有机物，沉淀、过滤取出，并作为处理重金属废水的沉淀剂备用。(4) There are many thioorganic substances, which are precipitated, filtered and taken out, and used as a precipitant for processing heavy metal wastewater for subsequent use.
处理重金属废水：Treatment of heavy metal wastewater:
(5)本例重金属废水是，残留重金属含量为Mn：232.6、Zn：134.8、Cu：98.6、Hg：3.5(mg/L)的工业废水。按照与该工业废水2.0％的重量百分比，把步骤(4)合成的多硫代有机物添加进去，混合均匀，静置后取出含其中的絮状沉淀。(5) The heavy metal wastewater in this example is industrial wastewater with residual heavy metal contents of Mn: 232.6, Zn: 134.8, Cu: 98.6, Hg: 3.5 (mg/L). According to the weight percentage of 2.0% of the industrial wastewater, the polythioorganic matter synthesized in the step (4) is added in, mixed evenly, and the flocculent precipitate contained therein is taken out after standing.
检测经处理的工业废水，其中残留重金属的含量为Mn：0.64、Zn：0.15、Cu：0.45、Hg：0.0009(mg/L)，达到国家的排放标准。After testing the treated industrial wastewater, the residual heavy metal content is Mn: 0.64, Zn: 0.15, Cu: 0.45, Hg: 0.0009 (mg/L), which meets the national discharge standard.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101032687A CN101486520B (en) | 2009-02-26 | 2009-02-26 | A method for treating heavy metal wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101032687A CN101486520B (en) | 2009-02-26 | 2009-02-26 | A method for treating heavy metal wastewater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101486520A CN101486520A (en) | 2009-07-22 |
| CN101486520B true CN101486520B (en) | 2010-09-22 |
Family
ID=40889607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101032687A Expired - Fee Related CN101486520B (en) | 2009-02-26 | 2009-02-26 | A method for treating heavy metal wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101486520B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101850358B (en) * | 2010-06-13 | 2011-11-16 | 南京工业大学 | Method for restoring organochlorine contaminated soil |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4612125A (en) * | 1985-06-20 | 1986-09-16 | Cx/Oxytech, Inc. | Method for removing heavy metal from wastewater streams |
| CN1054403A (en) * | 1990-02-28 | 1991-09-11 | 友联石油公司 | Solid thiocatbonate and production thereof and using method |
| CN101302017A (en) * | 2008-06-23 | 2008-11-12 | 重庆大学 | A kind of synthetic method of sodium pentathiocarbonate |
-
2009
- 2009-02-26 CN CN2009101032687A patent/CN101486520B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4612125A (en) * | 1985-06-20 | 1986-09-16 | Cx/Oxytech, Inc. | Method for removing heavy metal from wastewater streams |
| CN1054403A (en) * | 1990-02-28 | 1991-09-11 | 友联石油公司 | Solid thiocatbonate and production thereof and using method |
| CN101302017A (en) * | 2008-06-23 | 2008-11-12 | 重庆大学 | A kind of synthetic method of sodium pentathiocarbonate |
Non-Patent Citations (2)
| Title |
|---|
| JP特开平7-90112A 1995.04.04 |
| 李炳智等.氯代硝基苯类废水臭氧化动力学和机理.《化工学报》.2008,第59卷(第8期),2111-2120. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101486520A (en) | 2009-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Jia et al. | Ion flotation of heavy metal ions by using biodegradable biosurfactant as collector: Application and removal mechanism | |
| CN103073166B (en) | Method for simultaneously stabilizing heavy metals and deeply dewatering municipal sludge for municipal sludge | |
| CN105753128B (en) | Polyacrylamide base heavy metal flocculant and preparation method thereof | |
| CN102001734B (en) | Heavy metal settling agent for treating mercury-containing wastewater | |
| CN101988154A (en) | New technology for preparing electrolytic manganese metal solution and recycling iron by reducing pyrolusite with iron scraps | |
| Li et al. | Leaching kinetics of fluorine during the aluminum removal from spent Li-ion battery cathode materials | |
| CN106277263A (en) | A kind of magnetic organic polymer coargulator and preparation method thereof | |
| CN104829003B (en) | A kind of recoverying and utilizing method of cupric industrial wastes | |
| CN101486520B (en) | A method for treating heavy metal wastewater | |
| CN105668752A (en) | Preparing method for sulfhydrylation polyacrylamide heavy metal flocculant | |
| Zhang et al. | Transformation of typical components in anaerobically digested sludge during its conditioning process by KMnO4 | |
| CN105084498B (en) | A kind of preparation method and application of chitin modified collagen iron and manganese oxides | |
| CN103435679A (en) | Method for recycling protein from fish soluble | |
| JP2014091115A (en) | Method and device of treating heavy metal-containing waste fluid | |
| CN108892356A (en) | The processing method of heavy metal in a kind of municipal sludge | |
| CN110104891B (en) | Method for reducing and removing heavy metal ions in photovoltaic cell wastewater | |
| Zhang et al. | Effective removal of As from a high arsenic-bearing ZnSO4 solution by ultrasonic enhanced ozonation in a one-pot method | |
| CN106745139A (en) | A kind of processing method of fluorine-containing waste hydrochloric acid | |
| CN104529920A (en) | Method for preparing novel heavy metal capture agent | |
| CN110255686A (en) | A kind of oil gas field sewage treatment efficient flocculant and preparation method thereof | |
| CN111995714B (en) | Flexible hydrophilic polymers with adsorption-desorption anions and cations, and preparation methods and applications thereof | |
| WO2014061037A1 (en) | Treatment of hazardous solid waste generated in copper manufacturing process | |
| CN108545803A (en) | A kind of method that light promotees contact break composite drug and UV combinations degradation copper complex and synchronous copper removal | |
| CN112010390B (en) | Method for removing arsenic by ultrasonic self-cleaning in polluted acid | |
| Yu et al. | Sustainable and selective recovery of copper from electroplating sludge via choline chloride-citric acid deep eutectic solvent: Mechanistic elucidation and process intensification |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100922 Termination date: 20110226 |