CN114804474A - 一种水合肼还原后液除氨氮的方法 - Google Patents
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- 239000007788 liquid Substances 0.000 title claims abstract description 23
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 title claims abstract description 21
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 title claims abstract description 18
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 16
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000002351 wastewater Substances 0.000 claims abstract description 20
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 18
- 238000001704 evaporation Methods 0.000 claims abstract description 15
- 230000008020 evaporation Effects 0.000 claims abstract description 12
- 238000009835 boiling Methods 0.000 claims abstract description 9
- 239000000706 filtrate Substances 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 239000002893 slag Substances 0.000 claims abstract description 3
- 230000009467 reduction Effects 0.000 claims description 8
- 230000008569 process Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 229910000510 noble metal Inorganic materials 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 2
- 230000035484 reaction time Effects 0.000 abstract description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 13
- 229910052763 palladium Inorganic materials 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- -1 ammonia nitrogen ions Chemical class 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 239000010812 mixed waste Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052979 sodium sulfide Inorganic materials 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
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- Water Supply & Treatment (AREA)
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- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
Abstract
本发明公开了一种水合肼还原后液除氨氮的方法,将水合肼还原后液废水的pH调至8‑10,加入双氧水,于80‑85℃下预处理1‑1.5h;待反应平稳后,用氢氧化钠溶液将溶液pH调至9‑12,并将其在80‑90℃进行微沸蒸发,蒸发4‑8小时后,过滤使渣液分离,滤液达标外排。本发明采用组合工艺对贵金属生产中的含氨氮废水进行处理,工艺流程简单、反应时间较短,处理试剂用量小、具有一定的经济效益;且处理效果好,处理后液中氨氮的去除率大于99.80%,符合排放要求。
Description
技术领域
本发明属于废水处理技术领域,具体涉及一种水合肼还原后液去除废水中氨氮方法。
背景技术
随着水资源危机的加剧以及绿色可持续发展理念的提出,人们越来越重视环境问题。由于贵金属生产过程会产生大量含有氨氮离子和金属离子等组成的混合废液。众所周知,氨氮废水排入水体不仅引起水体富营养化、造成水体黑臭,给水处理的难度和成本加大,甚至对人群及生物产生毒害作用。水合肼还原后液为贵金属生产过程中,铂、钯精炼后期,用水合肼还原氯铂酸铵产出铂粉或者水合肼还原二氯二氨合钯产出钯粉的后液。里面金铂钯铑铱镍铜等金属离子含量≤1ppm,含有大量的氨氮等有害离子,用现有的硫化钠处理方式对废水进行处理,会产生大量硫化氢气体,导致现场工作环境恶劣,并无法满足工业污染物排放标准(GB 25467-2010)中工业废水的排放要求。为能经济高效的降低废水中氨氮离子的含量,优化生态环境,对现有工艺技术的改进已显得迫在眉睫。
发明内容
本发明提供了一种贵金属生产过程中含氨氮废水采用组合工艺处理,去除氨氮离子的方法,其工艺路线为“废水预处理-调pH值-微沸蒸发”。此法工艺流程简单,可从源头减少废水中有害离子的含量,使废水处理后液达标排放。
本发明一种水合肼还原后液去除废水中氨氮方法,包括以下步骤:
(1)含氨氮废水预处理:将水合肼还原后液废水的pH调至8-10,加入双氧水,于80-85℃下预处理1-1.5h;双氧水的质量分数为10-20%,水合肼还原后液和双氧水的质量比为1:2。
(2)微沸蒸发:待反应平稳后,用氢氧化钠溶液将溶液pH调至9-12,并将其在80~90℃进行微沸蒸发,蒸发4-8小时后,过滤使渣液分离,滤液按氨、氮工业污染物排放标准(GB25467-2010)达标排放。
本发明与现有技术相比,具有以下有益效果:本发明工艺流程简单、反应时间较短,处理试剂用量小、具有一定的经济效益;且处理效果好,处理后液中氨氮的去除率大于99.80%。
具体实施方式
下面结合具体实施例对本发明做进一步说明。
实施例1
(1)取钯精炼水合肼还原后液废水3.5L,测氨氮浓度为982g/L,调pH至9,加入400ml的质量分数为10%的双氧水,85℃下预处理1 h。反应剧烈放热,并产生大量白色泡沫。
(2)待反应平稳后,用氢氧化钠溶液将溶液pH调至11。并将其置于电热板上80℃进行微沸蒸发,蒸发2-8小时后,过滤使渣液分离,测氨氮的去除率如下表,滤液达标外排。
处理效果
实施例2
(1)取钯精炼水合肼还原后液废水3.5L,测氨氮浓度为982g/L,调pH至9,加入400ml的质量分数为5%-15%的双氧水,85℃下预处理1 h。反应放热,并产生白色泡沫。
(2)待反应平稳后,用氢氧化钠溶液将溶液pH调至11。并将其置于电热板上80℃进行微沸蒸发,蒸发2小时后,过滤使渣液分离,测氨氮的去除率如下表,滤液达标外排。
处理效果
实施例3
(1)取钯精炼水合肼还原后液废水3.5L,测氨氮浓度为982g/L,调pH至9-11,加入400ml的质量分数为10%的双氧水,85℃下预处理1 h。反应剧烈放热,并产生白色泡沫。
(2)待反应平稳后,用氢氧化钠溶液将溶液pH调至11。并将其置于电热板上80℃进行微沸蒸发,蒸发2小时后,过滤使渣液分离,测氨氮的去除率如下表,滤液达标外排。
处理效果
Claims (2)
1.一种水合肼还原后液去除废水中氨氮方法,包括以下步骤:
(1)含氨氮废水预处理:将水合肼还原后液废水的pH调至8-10,加入双氧水,于80-85℃下预处理1-1.5h;
(2)微沸蒸发:待反应平稳后,用氢氧化钠溶液将溶液pH调至9-12,并将其在80-90℃进行微沸蒸发,蒸发4-8小时后,过滤使渣液分离,滤液达标外排。
2.根据权利要求1所述的一种水合肼还原后液去除废水中氨氮方法,其特征在于:双氧水的质量分数为10-20%,水合肼还原后液和双氧水的质量比为1:2。
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007301459A (ja) * | 2006-05-10 | 2007-11-22 | Nittetsu Mining Co Ltd | アンモニア態窒素及びcod成分を高濃度で含有する排水の処理方法 |
CN106186486A (zh) * | 2016-07-26 | 2016-12-07 | 北京惠宇乐邦环保科技有限公司 | 一种水合肼高盐废水的回收处理方法 |
CN108164042A (zh) * | 2018-01-17 | 2018-06-15 | 湖南工业大学 | 一种高盐氨氮废水处理及氟硅资源化的方法 |
CN109455861A (zh) * | 2018-12-07 | 2019-03-12 | 中国恩菲工程技术有限公司 | 氨氮废水的处理方法 |
CN113562913A (zh) * | 2021-06-30 | 2021-10-29 | 长沙华时捷环保科技发展股份有限公司 | 一种水合肼生产废水的处理方法 |
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- 2022-03-10 CN CN202210232685.7A patent/CN114804474A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007301459A (ja) * | 2006-05-10 | 2007-11-22 | Nittetsu Mining Co Ltd | アンモニア態窒素及びcod成分を高濃度で含有する排水の処理方法 |
CN106186486A (zh) * | 2016-07-26 | 2016-12-07 | 北京惠宇乐邦环保科技有限公司 | 一种水合肼高盐废水的回收处理方法 |
CN108164042A (zh) * | 2018-01-17 | 2018-06-15 | 湖南工业大学 | 一种高盐氨氮废水处理及氟硅资源化的方法 |
CN109455861A (zh) * | 2018-12-07 | 2019-03-12 | 中国恩菲工程技术有限公司 | 氨氮废水的处理方法 |
CN113562913A (zh) * | 2021-06-30 | 2021-10-29 | 长沙华时捷环保科技发展股份有限公司 | 一种水合肼生产废水的处理方法 |
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