CN1569289A - Harmless treatment method for arsenic contained rejectamenta - Google Patents
Harmless treatment method for arsenic contained rejectamenta Download PDFInfo
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- CN1569289A CN1569289A CNA200410018281XA CN200410018281A CN1569289A CN 1569289 A CN1569289 A CN 1569289A CN A200410018281X A CNA200410018281X A CN A200410018281XA CN 200410018281 A CN200410018281 A CN 200410018281A CN 1569289 A CN1569289 A CN 1569289A
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Abstract
An innocent treatment method for arsenic containing wastes is disclosed, comprising the steps of: adding water and sulfuric acid into the arsenic containing wastes to make the arsenic concentration be 53000mg/l-73000mg/l, adding hydrogen dioxide solution, adding alkaline matter, PH is controlled between 8.5-12, 5 to 60 minutes later, adding ferrous sulphate, PH is controlled between 8-10, feeding compressed air in 60-90 DEG C for 10 to 60 minutes, thus the arsenic in waste water can be reacted to innocent ferrite. The method provided by the invention can decrease the initial concentration of arsenic in arsenic containing waste water from above 53000mg/l to 0.5mg/l lower level.
Description
Technical field
The present invention relates to a kind of method for innocent treatment of discarded object, relate in particular to a kind of arsenic discarded object method for innocent treatment that contains.
Background technology
Along with the raising of science and technology development and people's living standard, environmental problem more and more is subjected to people's attention.
Therefore arsenic is two property compounds, has severe toxicity, and its discharge standard in water is 0.5mg/l, contains the arsenic discarded object, as contain the solid matter of arsenic and contain the waste water of arsenic must be through can landfill and discharging after the harmless treatment.In general processing procedure, adopt and add lime precipitation and make it up to standard, practice shows that arsenic content still can reach more than the 1500mg/l in this processing method water, can't reduce (initial concentration is more than 53000mg/l), therefore must study a kind of new method, to satisfy industrial demand.
Summary of the invention
The technical issues that need to address of the present invention are to disclose a kind of arsenic discarded object method for innocent treatment that contains, and to overcome the above-mentioned defective that prior art exists, satisfy the needs in relevant field.
Technical scheme of the present invention:
Method of the present invention comprises the steps:
To contain the arsenic discarded object and add water and sulfuric acid, the concentration that makes arsenic in the water is 53000mg/l～73000mg/l, adds hydrogen peroxide, add alkaline matter then, control pH is 8.5～12, keeps 5～60 minutes, add ferrous sulfate, control pH is 8～10, feeds compressed air down at 60-90 ℃, reacted 10～60 minutes, the reaction of arsenic in the waste water can be generated harmless ferrite, product is filtered, slag advances landfill yard, the water discharging.
The said arsenic discarded object that contains comprises and contains arsenic solid matter or arsenic-containing waste water;
Said alkaline matter comprise lime or/and NaOH or/and potassium hydroxide or/and sodium carbonate or/and potash;
Preferred employing weight concentration is 25～40% hydrogen peroxide;
The preferred calcium oxide that adopts powdery.
Adopt the silver diethyl dithio carbamate AAS that the waste water of discharging is detected, carry out according to the Shanghai City integrated wastewater discharge standard, arsenic content can be reduced to below the 0.5mg/l in the water.
By above-mentioned disclosed technical scheme as seen, method of the present invention, easy and simple to handle, the concentration of arsenic in the arsenic-containing waste water of initial concentration more than 53000mg/l is reduced to below the 0.5mg/l, be convenient to promote the use of, for a kind of be suitable for industrializing implementation contain arsenic discarded object method for innocent treatment.
The specific embodiment
Embodiment 1
8kg is contained the arsenic solid matter, and 150ml concentration is 98% sulfuric acid, and 150kg water places reactor, the concentration of arsenic is 53000mg/l in the water, and adding 24kg concentration is 30% hydrogen peroxide, adds 130g NaOH and 24kg lime then, control pH is 10, keeps 10 minutes, adds ferrous sulfate, control pH is 8, feeds compressed air down at 80 ℃, reacts 30 minutes, the arsenic reaction that is about in the waste water generates harmless ferrite, and product is filtered, slag advances landfill yard, the water discharging.Adopt the Shanghai City integrated wastewater discharge standard that the waste water of discharging is detected, arsenic content can be reduced to below the 0.5mg/l in the water.
Embodiment 2
Adopt the identical method of embodiment 1, the concentration of arsenic is 73000mg/l in the water, adds 32kg concentration and be 30% hydrogen peroxide, add 180g NaOH and 34kg lime then, control pH is 10, keeps 15 minutes, add ferrous sulfate, control pH is 9, feeds compressed air down at 80 ℃, reacted 40 minutes, the arsenic reaction that is about in the waste water generates harmless ferrite, and product is filtered, slag advances landfill yard, the water discharging.Adopt the Shanghai City integrated wastewater discharge standard that the waste water of discharging is detected, arsenic content can be reduced to below the 0.5mg/l in the water.
Claims (5)
1. one kind contains arsenic discarded object method for innocent treatment, it is characterized in that, comprises the steps: to add water and sulfuric acid with containing the arsenic discarded object, the concentration that makes arsenic in the water is 53000mg/l～73000mg/l, add hydrogen peroxide, add alkaline matter then, control pH is 8.5～12, kept 5～60 minutes, add ferrous sulfate, control pH is 8～10, feeds compressed air down at 60-90 ℃, reacted 10～60 minutes, and the reaction of the arsenic in the waste water can be generated harmless ferrite.
2. method according to claim 1 is characterized in that, the said arsenic discarded object that contains comprises and contains arsenic solid matter or arsenic-containing waste water.
3. method according to claim 1 is characterized in that, said alkaline matter comprise lime or/and NaOH or/and potassium hydroxide or/and sodium carbonate or/and potash.
4. method according to claim 1 is characterized in that, the employing weight concentration is 25～40% hydrogen peroxide.
5. method according to claim 1 is characterized in that, adopts the calcium oxide of powdery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410018281XA CN100404085C (en) | 2004-05-12 | 2004-05-12 | Harmless treatment method for arsenic contained rejectamenta |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410018281XA CN100404085C (en) | 2004-05-12 | 2004-05-12 | Harmless treatment method for arsenic contained rejectamenta |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1569289A true CN1569289A (en) | 2005-01-26 |
| CN100404085C CN100404085C (en) | 2008-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB200410018281XA Expired - Fee Related CN100404085C (en) | 2004-05-12 | 2004-05-12 | Harmless treatment method for arsenic contained rejectamenta |
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| CN (1) | CN100404085C (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101817553A (en) * | 2010-04-02 | 2010-09-01 | 云南锡业集团（控股）有限责任公司 | Method for treating arsenic-containing smoke dust |
| CN101879521A (en) * | 2010-06-11 | 2010-11-10 | 中国地质大学（北京） | Method for remedying arsenic polluted soil |
| CN101426731B (en) * | 2006-04-28 | 2011-06-15 | 同和金属矿业有限公司 | Method for treating arsenic containing solution |
| CN102247685A (en) * | 2010-05-18 | 2011-11-23 | 上海复拓环境技术有限公司 | Harmless treatment process for mercury-containing waste dangerous chemicals |
| CN102247967A (en) * | 2010-05-18 | 2011-11-23 | 上海复拓环境技术有限公司 | Harmless treatment process for arsenic-containing waste dangerous chemicals |
| CN101784488B (en) * | 2007-07-13 | 2012-10-03 | 同和金属矿业有限公司 | Method of treating nonferrous smelting intermediary product containing arsenic |
| CN103359849A (en) * | 2012-06-26 | 2013-10-23 | 浙江工商大学 | Method for treating arsenic-containing organic wastewater with high salt |
| CN103551025A (en) * | 2013-08-27 | 2014-02-05 | 昆明理工大学 | Harmless treatment method of arsenic-containing flue dust |
| CN104451157A (en) * | 2014-11-25 | 2015-03-25 | 株洲冶炼集团股份有限公司 | Comprehensive recovery method for lead smelting high-cadmium ash and zinc electrolysis wastewater |
| CN105542776A (en) * | 2015-12-18 | 2016-05-04 | 北京高能时代环境技术股份有限公司 | Stabilizing agent for harmless treatment of arsenic-contaminated soil |
| CN105597262A (en) * | 2015-12-18 | 2016-05-25 | 湖南恒凯环保科技投资有限公司 | Medicament and method for stabilizing and solidifying high-concentration arsenic-containing waste residue |
| CN107032516A (en) * | 2016-10-31 | 2017-08-11 | 江西稀有金属钨业控股集团有限公司 | A kind of processing method of tungsten mineral material baking flue gas spent shower water |
| CN112717319A (en) * | 2020-12-16 | 2021-04-30 | 陕西新天地固体废物综合处置有限公司 | Harmless treatment method for arsenic-containing waste reagent |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094070C (en) * | 1999-09-29 | 2002-11-13 | 清华大学 | Ferri-rareearth element compound water treatment adsorbent and preparation process thereof |
| CN1148323C (en) * | 2000-12-05 | 2004-05-05 | 易求实 | Method of eliminating As, Pb, Cr and Hg from drinking water |
-
2004
- 2004-05-12 CN CNB200410018281XA patent/CN100404085C/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101426731B (en) * | 2006-04-28 | 2011-06-15 | 同和金属矿业有限公司 | Method for treating arsenic containing solution |
| CN101784488B (en) * | 2007-07-13 | 2012-10-03 | 同和金属矿业有限公司 | Method of treating nonferrous smelting intermediary product containing arsenic |
| CN101817553B (en) * | 2010-04-02 | 2012-03-07 | 云南锡业集团（控股）有限责任公司 | Method for treating arsenic-containing smoke dust |
| CN101817553A (en) * | 2010-04-02 | 2010-09-01 | 云南锡业集团（控股）有限责任公司 | Method for treating arsenic-containing smoke dust |
| CN102247685B (en) * | 2010-05-18 | 2015-02-25 | 上海复拓环境技术有限公司 | Harmless treatment process for mercury-containing waste dangerous chemicals |
| CN102247685A (en) * | 2010-05-18 | 2011-11-23 | 上海复拓环境技术有限公司 | Harmless treatment process for mercury-containing waste dangerous chemicals |
| CN102247967A (en) * | 2010-05-18 | 2011-11-23 | 上海复拓环境技术有限公司 | Harmless treatment process for arsenic-containing waste dangerous chemicals |
| CN102247967B (en) * | 2010-05-18 | 2014-10-08 | 上海复拓环境技术有限公司 | Harmless treatment process for arsenic-containing waste dangerous chemicals |
| CN101879521A (en) * | 2010-06-11 | 2010-11-10 | 中国地质大学（北京） | Method for remedying arsenic polluted soil |
| CN103359849A (en) * | 2012-06-26 | 2013-10-23 | 浙江工商大学 | Method for treating arsenic-containing organic wastewater with high salt |
| CN103551025A (en) * | 2013-08-27 | 2014-02-05 | 昆明理工大学 | Harmless treatment method of arsenic-containing flue dust |
| CN104451157A (en) * | 2014-11-25 | 2015-03-25 | 株洲冶炼集团股份有限公司 | Comprehensive recovery method for lead smelting high-cadmium ash and zinc electrolysis wastewater |
| CN105542776A (en) * | 2015-12-18 | 2016-05-04 | 北京高能时代环境技术股份有限公司 | Stabilizing agent for harmless treatment of arsenic-contaminated soil |
| CN105597262A (en) * | 2015-12-18 | 2016-05-25 | 湖南恒凯环保科技投资有限公司 | Medicament and method for stabilizing and solidifying high-concentration arsenic-containing waste residue |
| CN107032516A (en) * | 2016-10-31 | 2017-08-11 | 江西稀有金属钨业控股集团有限公司 | A kind of processing method of tungsten mineral material baking flue gas spent shower water |
| CN112717319A (en) * | 2020-12-16 | 2021-04-30 | 陕西新天地固体废物综合处置有限公司 | Harmless treatment method for arsenic-containing waste reagent |
| CN112717319B (en) * | 2020-12-16 | 2022-04-08 | 陕西新天地固体废物综合处置有限公司 | Harmless treatment method for arsenic-containing waste reagent |
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| Publication number | Publication date |
|---|---|
| CN100404085C (en) | 2008-07-23 |
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