CN103043812A - Advanced treatment method for arsenic-containing wastewater - Google Patents
Advanced treatment method for arsenic-containing wastewater Download PDFInfo
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- CN103043812A CN103043812A CN2011103089901A CN201110308990A CN103043812A CN 103043812 A CN103043812 A CN 103043812A CN 2011103089901 A CN2011103089901 A CN 2011103089901A CN 201110308990 A CN201110308990 A CN 201110308990A CN 103043812 A CN103043812 A CN 103043812A
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Abstract
The invention relates to a method for treating arsenic-containing wastewater by a process of preoxidation-composite coagulation deposition-filtering, and belongs to the technical field of wastewater treatment. The method comprises the steps of adding a certain amount of an oxidizing agent in a reaction tank for preoxidation in a condition that the wastewater contains trivalent arsenic so as to transform the trivalent arsenic into pentavalent arsenic completely, while for the wastewater only contains the pentavalent arsenic, the preoxidation process is not needed; adding a certain amount of a ferrous salt water solution; controlling a molar ration of Fe to As being 5-50; adding acid or alkali to adjust a pH value being 6-8; stirring for 0.1-1 min rapidly, so that a ferric arsenate precipitate is formed, at the same time, the ferrous salt is hydrolyzed into ferrous carbonyl to promote coagulation deposition of the ferric arsenate; adding a solution of 0.1-10 mg/L organic polymer flocculant; stirring for 0.1-1 min rapidly; stirring for 5-10 min slowly, precipitating for 10-30 min, discharging sludge from the bottom, introducing supernatant into a sand filter tank, a filter film or a filter bag, filtering and discharging the effluent. Arsenic content in water after treatment is lower than that of a drinking water standard (less than 10 [mu]g/L) regulated by the world health organization. The method has low sludge production and low cost, and can be used for advanced treatment of the arsenic-containing industrial wastewater and treatment of arsenic polluted underground water and drinking water.
Description
Technical field
The present invention relates to the deep treatment method of a kind of arsenic-containing waste water and arsenic contamination underground water or tap water, particularly a kind of preoxidation-complex coagulation that is applied to the arsenic-containing waste water advanced treatment precipitates-filters novel method.
Background technology
Arsenic and compound thereof all have severe toxicity, and wherein trivalent arsenic is stronger than pentavalent arsenic toxicity, and are defined as first kind carcinogens by the international research institution that gives protection against cancer.Arsenic contamination is mainly derived from waste water and the waste residue of generation of the industry of mining, metallurgy, chemical industry, chemical pharmacy, pesticide producing, glass processing, process hides.Because arsenic mainly is detrimental to health by tap water, American-European, Japan and the country such as Chinese all classify arsenic as one of water pollutant of preferential control.Environmental Protection in America general administration regulation Arsenic in Drinking Water content is lower than 10 μ g/L, and long-term objective fixed on is lower than 2 μ g/L; The World Health Organization also is decided to be tap water arsenic content standard and is lower than 10 μ g/L, and China also is reduced to 10 μ g/L since regulation Arsenic in Drinking Water content in 2007 by 50 original μ g/L.
Can pass through lime neutralisation, sulfurization-precipitation method and molysite flocculent precipitation etc. for high-concentration arsenic-containing wastewater at present and extract arsenic, preparation arsenic and compound thereof.Arsenic-containing waste water for lower concentration mainly adopts the methods such as molysite deposition, extraction, ion-exchange and absorption to process.Wherein there is the residual secondary pollution problem of extraction agent in extraction process; Ion-exchange and absorption method regeneration and separating process are complicated, and cost is higher, is difficult to large-scale application; And the relative technique of molysite deposition method is simple, and practical application effect is better.Chinese patent (grant number: CN1100008C) propose the method for a kind of oxidation-calcium precipitation-molysite flocculation sediment harmless treatment arsenic-containing waste water, but because the ferric arsenate deposit seeds that adopts the molysite deposition method to generate separately is less, the precipitate and separate time is long, and it is large to generate sludge quantity, and arsenic content is difficult to guarantee to reach the drinking water standard that the World Health Organization requires in the rear water of processing.Chinese patent (publication number: CN101475252A) propose a kind of molysite in conjunction with the method for bentonite in treatment arsenic-containing waste water, the removal that can precipitate by ferric arsenate, the number of mechanisms such as iron carbonyl coagulation and wilkinite absorption realizes pentavalent arsenic in the water, but still difficult China and the World Health Organization of reaching is to the requirement of Arsenic in Drinking Water content.Therefore, thereby guarantee underground water and drinking water safety in order to solve the arsenic contamination problem, the technology of developing a kind of efficient processing lower concentration arsenic-containing waste water or arsenic contamination water source extremely is necessary.
Summary of the invention
The present invention has overcome the limitation of existing arsenic-containing waste water treatment technology, and a kind of preoxidation-complex coagulation precipitation-filtration treatment arsenic-containing waste water novel method is provided.
The principle of preoxidation provided by the invention-complex coagulation precipitation-filtration treatment arsenic-containing waste water novel method is as follows:
In waste water, contain in the arsenious situation, in waste water, add first oxygenant trivalent arsenic is oxidized to pentavalent arsenic, be adjusted in pH=6～8 time by acid or alkali, pentavalent arsenic exists with the arsenate form, and by adding ferric iron generation ferric arsenate precipitation, iron salt hydrolysis generates iron carbonyl promotion ferric arsenate flocking settling simultaneously, and adding organic polymer coargulator, accelerate flco growth and rapid subsidence, after supernatant liquor enters the filtration unit filtration, reached the standard (＜10 μ g/L) of the Arsenic in Drinking Water content of China and WHO regulation.
A kind of preoxidation provided by the invention-complex coagulation precipitation-filtration treatment arsenic-containing waste water novel method, its step is as follows:
As shown in Figure 1, for actual or preparation arsenic-containing waste water (1), in waste water, contain in the arsenious situation, in reaction tank (2), add a certain amount of oxygenant (4) preoxidation, with stirring rake (3) stirring reaction 5～60min, make trivalent arsenic all be converted into pentavalent arsenic, do not need pre-oxidation step for containing pentavalent arsenic waste water, then add a certain amount of molysite aqueous solution (5), and acid adding (6) or alkali (7) accent pH=6～8, control Fe/As mol ratio is 5～50, rapid stirring 0.1～1min, add again 0.1～10mg/L organic polymer coargulator (8), rapid stirring 0.1～1min, low rate mixing 5～10min, precipitation 10～30min, discharge mud (9) from the bottom, after supernatant liquor enters the filtration unit filtration, water outlet (12) qualified discharge.Described oxygenant is a kind of in ozone, air (oxygen), the hydrogen peroxide; Described molysite is a kind of in iron(ic) chloride, the bodied ferric sulfate, and molysite mass percentage concentration in water is 1～10%; Described acid is a kind of in hydrochloric acid, the sulfuric acid, and alkali is a kind of in sodium hydroxide, calcium oxide, the yellow soda ash; Described organic polymer coargulator is polyacrylamide, and the concentration of polyacrylamide solution is 0.01～0.1%; Described filtration unit is sand filter (10) or filter membrane/filter bag (11).Filtrate is quartz sand in the described sand filter, and adopting gravity is the natural filtration mode of power; The material of described filter bag is fiber filter cloth, and the filter cloth aperture is 100～200 orders; Adopting gravity is the natural filtration mode of power; Described filter membrane adopts hollow fiber film assembly, and film component is polyvinylidene dichloride (PVDF), and membrane pore size is 0.2～0.5 μ m, and adopting vacuum pump is the suction type filter type of power.
Compared with prior art, the invention has the advantages that: the present invention is in conjunction with the advantage of oxidation, precipitation, coagulation and filtration kinds of processes, preoxidation process all is converted into pentavalent arsenic with trivalent arsenic, strengthening the ferric arsenate precipitation generates, organic polymer coargulator adds and is conducive to ferric arsenate gathering sedimentation, shorten the settling time, increase is removed efficient to arsenic, follow-up filtration unit can effectively be removed partial suspended attitude solia particle, and arsenic content reaches the drinking water standard (＜10 μ g/L) that WHO stipulates in the rear water thereby guarantee to process.The present invention is to the lower concentration arsenic-containing waste water or arsenic contamination water source lignin-sludge output is few, processing cost is low, simple to operate, arsenic removal efficient height.
Description of drawings
Fig. 1 is simplified construction synoptic diagram of the present invention;
Wherein: 6 sour 7 alkali, 8 organic polymer coargulators, 9 mud, 10 sand filters, 11 filter membranes/filter bag 12 water outlets of 1 arsenic-containing waste water, 2 reaction tanks, 3 stirring rakes, 4 oxygenants, 5 iron salt solutions
Embodiment
Below in conjunction with specific embodiment technical scheme of the present invention is further described.
Embodiment 1:
The inventive method contains 1mg/L trivalent arsenic preparation waste water to 1L and processes.
In reaction tank, pass into 5mg/L ozone, stirring reaction 5min, then the ferric chloride Solution that adds 150mg/L 10%, and hydro-oxidation sodium is transferred pH=8, rapid stirring 0.1min, the polyacrylamide solution that adds again 0.1mg/L 0.1%, rapid stirring 0.1min, low rate mixing 5min, precipitation 10min, after mud separated, supernatant liquor entered sand filter and filters.Processed waste water As content is 0.008mg/L, and Fe content is 0.02mg/L, pH=7.5.
Embodiment 2:
The inventive method contains 10mg/L trivalent arsenic preparation waste water to 10L and processes.
In reaction tank, pass into the 100ml/min air, stirring reaction 60min, then add the polymeric ferrous sulphate solution of 500mg/L 1%, and add calcium oxide accent pH=6, rapid stirring 1min, the polyacrylamide solution that adds again 1mg/L 0.1%, rapid stirring 1min, low rate mixing 10min, precipitation 30min, after mud separates, the supernatant liquor membrane filtration.Processed waste water As content is 0.009mg/L, and Fe content is 0.01mg/L, pH=6.8.
Embodiment 3:
The inventive method contains 100mg/L trivalent arsenic preparation waste water to 100L and processes.
In reaction tank, add the 100mg/L hydrogen peroxide, stirring reaction 10min, then add the polymeric ferrous sulphate solution of 1000mg/L10%, and add yellow soda ash accent pH=7, rapid stirring 1min, the polyacrylamide solution that adds again 10mg/L 0.1%, rapid stirring 1min, low rate mixing 10min, precipitation 30min, after mud separated, supernatant liquor entered filter bag and filters.Processed waste water As content is 0.005mg/L, and Fe content is 0.01mg/L, pH=6.8.
Embodiment 4:
The inventive method contains the actual mining wastewater of 1mg/L pentavalent arsenic to 10L and processes.
In reaction tank, add the ferric chloride Solution of 150mg/L 10%, and add sulfuric acid accent pH=7, rapid stirring 0.1min, the polyacrylamide solution that adds again 0.5mg/L 0.1%, rapid stirring 0.5min, low rate mixing 5min, precipitation 10min, after mud separated, supernatant liquor entered sand filter and filters.Processed waste water As content is 0.004mg/L, and Fe content is 0.02mg/L, pH=7.2.
Embodiment 5:
The inventive method contains the actual mining wastewater of 12mg/L pentavalent arsenic to 100L and processes.
In reaction tank, add the polymeric ferrous sulphate solution of 500mg/L 10%, and add hydrochloric acid accent pH=6, rapid stirring 1min, the polyacrylamide solution that adds again 2mg/L 0.01%, rapid stirring 0.5min, low rate mixing 10min, precipitation 30min, after mud separated, supernatant liquor entered filter bag and filters.Processed waste water As content is 0.007mg/L, and Fe content is 0.009mg/L, pH=6.4.
Embodiment 6:
The inventive method contains the actual mining wastewater of 102mg/L pentavalent arsenic to 1000L and processes.
In reaction tank, add the polymeric ferrous sulphate solution of 1000mg/L 10%, and add hydrochloric acid accent pH=7, rapid stirring 1min, the polyacrylamide solution that adds again 10mg/L 0.01%, rapid stirring 0.5min, low rate mixing 10min, precipitation 30min, after mud separated, supernatant liquor entered membrane filtration.Processed waste water As content is 0.012mg/L, and Fe content is 0.008mg/L, pH=7.4.
Embodiment 7:
The inventive method contains the actual Wastewater from sulphuric acid plant of 9.3mg/L trivalent arsenic to 1000L and processes.
In reaction tank, pass into 100mg/L oxygen, stirring reaction 5min, then the ferric chloride Solution that adds 500mg/L 10%, and hydro-oxidation sodium is transferred pH=8, rapid stirring 0.1min, the polyacrylamide solution that adds again 2mg/L 0.1%, rapid stirring 0.1min, low rate mixing 5min, precipitation 10min, after mud separated, supernatant liquor entered sand filter and filters.Processed waste water As content is 0.007mg/L, and Fe content is 0.04mg/L, pH=7.2.
Claims (7)
1. the method for preoxidation-complex coagulation precipitation-filtration treatment arsenic-containing waste water, it is characterized in that, in waste water, contain in the arsenious situation, in reaction tank, add a certain amount of oxygenant preoxidation, stirring reaction 5-60min, make trivalent arsenic all be converted into pentavalent arsenic, do not need pre-oxidation step for only containing pentavalent arsenic waste water, then add a certain amount of molysite aqueous solution, and acid adding or adjusting PH with base=6～8, control Fe/As mol ratio is 5～50, rapid stirring 0.1～1min generates the ferric arsenate precipitation, and iron salt hydrolysis generates iron carbonyl promotion ferric arsenate flocking settling simultaneously, add again 0.1～10mg/L organic polymer coargulator aqueous solution, rapid stirring 0.1～1min, low rate mixing 5～10min, precipitation 10～30min, behind bottom discharge mud, supernatant liquor enters and discharges after filtration unit filters.
2. the method for preoxidation according to claim 1-complex coagulation precipitation-filtration treatment arsenic-containing waste water is characterized in that described oxygenant is a kind of in ozone, air, oxygen and the hydrogen peroxide.
3. the method for preoxidation according to claim 1-complex coagulation precipitation-filtration treatment arsenic-containing waste water is characterized in that described molysite is a kind of in iron(ic) chloride and the bodied ferric sulfate, and molysite mass percentage concentration in water is 1～10%.
4. the method for preoxidation according to claim 1-complex coagulation precipitation-filtration treatment arsenic-containing waste water is characterized in that described acid is a kind of in hydrochloric acid and the sulfuric acid.
5. the method for preoxidation according to claim 1-complex coagulation precipitation-filtration treatment arsenic-containing waste water is characterized in that described alkali is a kind of in sodium hydroxide, calcium oxide and the yellow soda ash.
6. the method for preoxidation according to claim 1-complex coagulation precipitation-filtration treatment arsenic-containing waste water is characterized in that described organic polymer coargulator is polyacrylamide, and the concentration of polyacrylamide solution is 0.01～0.1%.
7. the method for preoxidation according to claim 1-complex coagulation precipitation-filtration treatment arsenic-containing waste water is characterized in that described filtration unit is sand filter or filter membrane or filter bag; Filtrate is quartz sand in the described sand filter, and adopting gravity is the natural filtration mode of power; The material of described filter bag is fiber filter cloth, and the filter cloth aperture is 100～200 orders; Adopting gravity is the natural filtration mode of power; Described filter membrane adopts hollow fiber film assembly, and film component is polyvinylidene dichloride (PVDF), and membrane pore size is 0.2～0.5 μ m, and adopting vacuum pump is the suction type filter type of power.
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Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103408162A (en) * | 2013-08-08 | 2013-11-27 | 上海正帆科技有限公司 | Arsenious wastewater treatment method |
| CN103663779A (en) * | 2013-11-19 | 2014-03-26 | 苏州丹百利电子材料有限公司 | Method for safely and efficiently treating arsenic waste water generated from arsenic hydride production |
| CN103922458A (en) * | 2014-05-05 | 2014-07-16 | 哈尔滨工业大学 | Method for removing trace arsenic from water |
| CN104787932A (en) * | 2015-04-29 | 2015-07-22 | 铜陵化学工业集团有限公司 | Treatment method of industrial arsenic wastewater |
| CN104944625A (en) * | 2015-03-12 | 2015-09-30 | 许言 | Treatment method for copper smelting post-vulcanization solution and production wastewater |
| CN105668897A (en) * | 2016-03-18 | 2016-06-15 | 昆明冶金研究院 | Method for dearsenization of arsenic containing waste water generated in regeneration process of vanadium, tungsten and titanium denitration catalyst |
| CN105753209A (en) * | 2016-03-03 | 2016-07-13 | 湖州欧美新材料有限公司 | Arsenic containing wastewater treatment method |
| CN105753218A (en) * | 2016-04-13 | 2016-07-13 | 中国科学院过程工程研究所 | Method for removing trivalent arsenic |
| CN105765090A (en) * | 2013-11-29 | 2016-07-13 | 奥图泰(芬兰)公司 | Method and arrangement of separating arsenic from starting materials |
| CN106007076A (en) * | 2016-07-04 | 2016-10-12 | 赣州有色冶金研究所 | Treatment method of arsenic-containing wastewater in tungsten smelting |
| CN106007069A (en) * | 2016-06-27 | 2016-10-12 | 安徽元琛环保科技股份有限公司 | Waste denitration catalyst regeneration zero-discharge wastewater treatment system |
| CN106180138A (en) * | 2016-07-15 | 2016-12-07 | 深圳市危险废物处理站有限公司 | A kind of processing method of arsenic-containing waste |
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| CN106823234A (en) * | 2016-12-21 | 2017-06-13 | 中南大学 | A kind of method that hydro-thermal method prepares the solid arsenic mineral of high stability |
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| CN108773940A (en) * | 2018-07-10 | 2018-11-09 | 陆晓平 | A method of arsenic in removal salt water lake lake water |
| CN109133416A (en) * | 2018-09-06 | 2019-01-04 | 广东先导稀材股份有限公司 | The treatment process of arsenic-containing waste water |
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| CN110540272A (en) * | 2019-08-13 | 2019-12-06 | 贵州紫金矿业股份有限公司 | Coagulation deep arsenic removal system and arsenic removal method |
| CN110606598A (en) * | 2019-09-12 | 2019-12-24 | 广西博世科环保科技股份有限公司 | Method for treating low-concentration arsenic-containing organic industrial wastewater |
| CN110963612A (en) * | 2019-12-18 | 2020-04-07 | 上海勘察设计研究院(集团)有限公司 | Method for co-processing lead and arsenic composite pollutants in underground water by adopting pre-oxidation |
| CN111118288A (en) * | 2020-03-24 | 2020-05-08 | 烟台市金奥环保科技有限公司 | Method for recovering copper, zinc and arsenic in acid immersion liquid |
| CN112624486A (en) * | 2020-12-17 | 2021-04-09 | 紫金矿业集团股份有限公司 | Oxidation treatment process for arsenic-containing waste acid wastewater |
| CN114349214A (en) * | 2022-01-04 | 2022-04-15 | 湖南云河信息科技有限公司 | Efficient arsenic removal process and device for underground water |
| CN114988543A (en) * | 2022-06-20 | 2022-09-02 | 江苏中电创新环境科技有限公司 | Complexing agent for treating arsenic-containing organic wastewater and preparation method and application thereof |
| US11639302B2 (en) | 2016-11-10 | 2023-05-02 | Mexichem Fluor S.A. De C.V. | Process for reducing the concentration of arsenic in an aqueous solution comprising a fluoroacid |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002316173A (en) * | 2001-04-18 | 2002-10-29 | Sony Corp | Method for treating wastewater containing arsenic and hydrogen peroxide |
| JP2004290777A (en) * | 2003-03-26 | 2004-10-21 | Nittetsu Mining Co Ltd | Method for treating arsenic-containing water |
| CN101948149A (en) * | 2010-09-03 | 2011-01-19 | 浙江弗莱德环境科技有限公司 | Activated carbon filter |
-
2011
- 2011-10-13 CN CN2011103089901A patent/CN103043812A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002316173A (en) * | 2001-04-18 | 2002-10-29 | Sony Corp | Method for treating wastewater containing arsenic and hydrogen peroxide |
| JP2004290777A (en) * | 2003-03-26 | 2004-10-21 | Nittetsu Mining Co Ltd | Method for treating arsenic-containing water |
| CN101948149A (en) * | 2010-09-03 | 2011-01-19 | 浙江弗莱德环境科技有限公司 | Activated carbon filter |
Non-Patent Citations (1)
| Title |
|---|
| 翟平 等: "氧化-混凝法处理碱性高砷废水的实验研究", 《环境污染治理技术与设备》 * |
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| CN110606598A (en) * | 2019-09-12 | 2019-12-24 | 广西博世科环保科技股份有限公司 | Method for treating low-concentration arsenic-containing organic industrial wastewater |
| CN110963612A (en) * | 2019-12-18 | 2020-04-07 | 上海勘察设计研究院(集团)有限公司 | Method for co-processing lead and arsenic composite pollutants in underground water by adopting pre-oxidation |
| CN111118288A (en) * | 2020-03-24 | 2020-05-08 | 烟台市金奥环保科技有限公司 | Method for recovering copper, zinc and arsenic in acid immersion liquid |
| CN112624486A (en) * | 2020-12-17 | 2021-04-09 | 紫金矿业集团股份有限公司 | Oxidation treatment process for arsenic-containing waste acid wastewater |
| CN114349214A (en) * | 2022-01-04 | 2022-04-15 | 湖南云河信息科技有限公司 | Efficient arsenic removal process and device for underground water |
| CN114988543A (en) * | 2022-06-20 | 2022-09-02 | 江苏中电创新环境科技有限公司 | Complexing agent for treating arsenic-containing organic wastewater and preparation method and application thereof |
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