Effect of cations on the removal rate of chloride ions and mechanism analysis in high-salt wastewater
Precipitation dechlorination has the advantage of being a simple process with a low cost. However, there are few reports on the effect of cations on dechlorination. In this study, we investigated the effect of cations in high-salt wastewater on the removal of chlorine ions by cuprous chloride precip...
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2021
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oai:doaj.org-article:16c7cba09b094ef1a4b1cfee0dab30832021-11-06T11:01:52ZEffect of cations on the removal rate of chloride ions and mechanism analysis in high-salt wastewater0273-12231996-973210.2166/wst.2021.098https://doaj.org/article/16c7cba09b094ef1a4b1cfee0dab30832021-05-01T00:00:00Zhttp://wst.iwaponline.com/content/83/9/2232https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Precipitation dechlorination has the advantage of being a simple process with a low cost. However, there are few reports on the effect of cations on dechlorination. In this study, we investigated the effect of cations in high-salt wastewater on the removal of chlorine ions by cuprous chloride precipitation and analysed the corresponding mechanism. A series of investigations revealed that Fe3+ could oxidise sulphite, thereby reducing the removal rate of chlorine ions. The reaction between magnesium and sulphite results in precipitation, which has a slightly adverse effect on the removal of chloride ions. Hexavalent chromium oxidises the chloride ion, resulting in the formation of chlorine gas, which improves the removal rate. Ferrous and manganese, however, do not have a notable effect on chlorine removal. HIGHLIGHTS This paper describes the effect of cations in high-salt wastewater on the removal of chlorine ions by cuprous chloride precipitation.; Fe3+ can be converted to Fe2+ to reduce the inhibitory effect on chloride ion removal.; Chromium oxidises the chloride ion, which improves the removal rate.; The removal of chloride ions from high-salt wastewater via the cuprous chloride precipitation method is economical.;Kangning GaoJie LuXi WangDengxin LiShihong XuIWA Publishingarticlecationchloride ionhigh-salt wastewatermechanismprecipitationEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 9, Pp 2232-2241 (2021) |
| institution |
DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
cation chloride ion high-salt wastewater mechanism precipitation Environmental technology. Sanitary engineering TD1-1066 |
| spellingShingle |
cation chloride ion high-salt wastewater mechanism precipitation Environmental technology. Sanitary engineering TD1-1066 Kangning Gao Jie Lu Xi Wang Dengxin Li Shihong Xu Effect of cations on the removal rate of chloride ions and mechanism analysis in high-salt wastewater |
| description |
Precipitation dechlorination has the advantage of being a simple process with a low cost. However, there are few reports on the effect of cations on dechlorination. In this study, we investigated the effect of cations in high-salt wastewater on the removal of chlorine ions by cuprous chloride precipitation and analysed the corresponding mechanism. A series of investigations revealed that Fe3+ could oxidise sulphite, thereby reducing the removal rate of chlorine ions. The reaction between magnesium and sulphite results in precipitation, which has a slightly adverse effect on the removal of chloride ions. Hexavalent chromium oxidises the chloride ion, resulting in the formation of chlorine gas, which improves the removal rate. Ferrous and manganese, however, do not have a notable effect on chlorine removal. HIGHLIGHTS
This paper describes the effect of cations in high-salt wastewater on the removal of chlorine ions by cuprous chloride precipitation.;
Fe3+ can be converted to Fe2+ to reduce the inhibitory effect on chloride ion removal.;
Chromium oxidises the chloride ion, which improves the removal rate.;
The removal of chloride ions from high-salt wastewater via the cuprous chloride precipitation method is economical.; |
| format |
article |
| author |
Kangning Gao Jie Lu Xi Wang Dengxin Li Shihong Xu |
| author_facet |
Kangning Gao Jie Lu Xi Wang Dengxin Li Shihong Xu |
| author_sort |
Kangning Gao |
| title |
Effect of cations on the removal rate of chloride ions and mechanism analysis in high-salt wastewater |
| title_short |
Effect of cations on the removal rate of chloride ions and mechanism analysis in high-salt wastewater |
| title_full |
Effect of cations on the removal rate of chloride ions and mechanism analysis in high-salt wastewater |
| title_fullStr |
Effect of cations on the removal rate of chloride ions and mechanism analysis in high-salt wastewater |
| title_full_unstemmed |
Effect of cations on the removal rate of chloride ions and mechanism analysis in high-salt wastewater |
| title_sort |
effect of cations on the removal rate of chloride ions and mechanism analysis in high-salt wastewater |
| publisher |
IWA Publishing |
| publishDate |
2021 |
| url |
https://doaj.org/article/16c7cba09b094ef1a4b1cfee0dab3083 |
| work_keys_str_mv |
AT kangninggao effectofcationsontheremovalrateofchlorideionsandmechanismanalysisinhighsaltwastewater AT jielu effectofcationsontheremovalrateofchlorideionsandmechanismanalysisinhighsaltwastewater AT xiwang effectofcationsontheremovalrateofchlorideionsandmechanismanalysisinhighsaltwastewater AT dengxinli effectofcationsontheremovalrateofchlorideionsandmechanismanalysisinhighsaltwastewater AT shihongxu effectofcationsontheremovalrateofchlorideionsandmechanismanalysisinhighsaltwastewater |
| _version_ |
1718443716319903744 |