CN113426404B - Preparation method of arsenic removal medicament for organophosphorus pesticide wastewater - Google Patents
Preparation method of arsenic removal medicament for organophosphorus pesticide wastewater Download PDFInfo
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- CN113426404B CN113426404B CN202110692983.XA CN202110692983A CN113426404B CN 113426404 B CN113426404 B CN 113426404B CN 202110692983 A CN202110692983 A CN 202110692983A CN 113426404 B CN113426404 B CN 113426404B
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- arsenic removal
- solution
- organophosphorus pesticide
- arsenic
- pesticide wastewater
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- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 229910052785 arsenic Inorganic materials 0.000 title claims abstract description 54
- 239000002351 wastewater Substances 0.000 title claims abstract description 34
- 239000003987 organophosphate pesticide Substances 0.000 title claims abstract description 28
- 239000003814 drug Substances 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000000243 solution Substances 0.000 claims abstract description 28
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 24
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 16
- 239000011259 mixed solution Substances 0.000 claims abstract description 14
- JGDITNMASUZKPW-UHFFFAOYSA-K aluminium trichloride hexahydrate Chemical compound O.O.O.O.O.O.Cl[Al](Cl)Cl JGDITNMASUZKPW-UHFFFAOYSA-K 0.000 claims abstract description 10
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims abstract description 7
- 239000012153 distilled water Substances 0.000 claims abstract description 7
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 238000000227 grinding Methods 0.000 claims abstract description 7
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 7
- 239000010936 titanium Substances 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 abstract description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 5
- 229910052698 phosphorus Inorganic materials 0.000 description 5
- 239000011574 phosphorus Substances 0.000 description 5
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical group [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 4
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 4
- 239000003905 agrochemical Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 208000008316 Arsenic Poisoning Diseases 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229940116901 diethyldithiocarbamate Drugs 0.000 description 1
- LMBWSYZSUOEYSN-UHFFFAOYSA-N diethyldithiocarbamic acid Chemical compound CCN(CC)C(S)=S LMBWSYZSUOEYSN-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
- B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/42—Materials comprising a mixture of inorganic materials
-
- 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
- C02F2101/103—Arsenic compounds
-
- 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
- C02F2101/20—Heavy metals or heavy metal compounds
-
- 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
- C02F2101/30—Organic compounds
- C02F2101/306—Pesticides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a preparation method of an arsenic removal medicament for organophosphorus pesticide wastewater, which comprises the steps of uniformly mixing titanium tetrachloride solution and aluminum trichloride hexahydrate solution according to a titanium/aluminum molar ratio (3:7) - (7:3) to obtain a mixed solution, regulating the pH value of the mixed solution to 9 by using sodium hydroxide solution, stirring for 2-4 hours at room temperature, filtering, cleaning filter residues by using distilled water, drying and grinding to obtain the arsenic removal medicament. Adding 200mg/L arsenic removal agent into organophosphorus pesticide wastewater, stirring and mixing for 2 hours at room temperature, and then carrying out solid-liquid separation to obtain treated wastewater. The preparation method provided by the invention is simple and low in cost, the prepared arsenic removal agent can adsorb and remove arsenic in the organophosphorus pesticide wastewater, the arsenic removal efficiency is high, and the adsorption-saturated arsenic removal agent can be recycled.
Description
Technical Field
The invention relates to a preparation method of an arsenic removal medicament for organophosphorus pesticide wastewater, belonging to the technical field of sewage treatment.
Background
The agricultural chemical is an indispensable production data for ensuring the sustainable development of agricultural production in China, but the organophosphorus agricultural chemical wastewater contains toxic substances such as arsenic, ammonia nitrogen, inorganic phosphorus and the like and various biodegradable substances besides agricultural chemical and intermediates, has high toxicity and poor biodegradability, and is difficult to reach the emission standard by directly treating by using the traditional biological process, thus causing serious pollution to the environment. Particularly, arsenic in organophosphorus pesticide wastewater, which can pollute water and soil, finally enters human health through food chains or ground water and groundwater, and thus, an occurrence of arsenic poisoning of human and livestock has occurred in recent years. Therefore, it is necessary to remove arsenic from organophosphorus pesticide wastewater by using a chemical agent.
The traditional arsenic removal agent is Fe (III), but total phosphorus in the organophosphorus pesticide wastewater, especially inorganic phosphorus, has strong competitive action with the traditional arsenic removal agent (Fe (III)), so the effect of removing arsenic from the organophosphorus pesticide wastewater by adopting Fe (III) is not good.
Disclosure of Invention
The invention aims to solve the defects of the method for removing arsenic in organophosphorus pesticide wastewater by adopting Fe (III) in the prior art, and provides a preparation method of an arsenic removal medicament for organophosphorus pesticide wastewater, which is simple and low in cost, and the prepared arsenic removal medicament can be used for efficiently removing arsenic in organophosphorus pesticide wastewater.
Technical proposal
The preparation method of the arsenic removal medicament for the organophosphorus pesticide wastewater comprises the following steps:
(1) Uniformly mixing titanium tetrachloride solution and aluminum trichloride hexahydrate solution according to a titanium/aluminum molar ratio (3:7) - (7:3) to obtain a mixed solution;
(2) And (3) regulating the pH value of the mixed solution to 9 by using a sodium hydroxide solution, stirring for 2-4 hours at room temperature, filtering, cleaning filter residues by using distilled water, drying, and finally grinding to obtain the arsenic removal medicament.
Further, in the step (1), the concentration of the titanium tetrachloride solution was 0.02M, and the concentration of the aluminum trichloride hexahydrate solution was 0.02M.
Further, in step (1), the molar ratio of titanium tetrachloride solution to aluminum trichloride hexahydrate solution is preferably 3:7.
Further, in the step (2), the mass concentration of the sodium hydroxide solution is 20%.
Further, in the step (2), the drying temperature is 60 ℃.
The method for treating the organophosphorus pesticide wastewater by using the arsenic removal agent prepared by the method comprises the following steps: adding 200mg/L arsenic removal agent into organophosphorus pesticide wastewater, stirring and mixing for 2 hours at room temperature, and then carrying out solid-liquid separation to obtain treated wastewater.
The invention has the beneficial effects that: the invention provides a preparation method of an arsenic removal medicament for organophosphorus pesticide wastewater, which is simple in method and low in cost, the prepared arsenic removal medicament can adsorb and remove arsenic in organophosphorus pesticide wastewater, the arsenic removal efficiency is high, and the adsorption-saturated arsenic removal medicament can be recovered and reused after being soaked and cleaned by alkali liquor.
Detailed Description
The technical scheme of the invention is further described below with reference to specific embodiments.
Example 1
The preparation method of the arsenic removal medicament for the organophosphorus pesticide wastewater comprises the following steps:
(1) Uniformly mixing 0.02M titanium tetrachloride solution and 0.02M aluminum trichloride hexahydrate solution according to a titanium/aluminum molar ratio of 3:7 to obtain a mixed solution;
(2) And (3) regulating the pH value of the mixed solution to 9 by using a sodium hydroxide solution with the mass concentration of 20%, stirring for 2 hours at room temperature, filtering, cleaning filter residues by using distilled water, drying at 60 ℃, and finally grinding to obtain the arsenic removal medicament.
Example 2
The preparation method of the arsenic removal medicament for the organophosphorus pesticide wastewater comprises the following steps:
(1) Uniformly mixing 0.02M titanium tetrachloride solution and 0.02M aluminum trichloride hexahydrate solution according to a titanium/aluminum molar ratio of 5:5 to obtain a mixed solution;
(2) And (3) regulating the pH value of the mixed solution to 9 by using a sodium hydroxide solution with the mass concentration of 20%, stirring for 2 hours at room temperature, filtering, cleaning filter residues by using distilled water, drying at 60 ℃, and finally grinding to obtain the arsenic removal medicament.
Example 3
The preparation method of the arsenic removal medicament for the organophosphorus pesticide wastewater comprises the following steps:
(1) Uniformly mixing 0.02M titanium tetrachloride solution and 0.02M aluminum trichloride hexahydrate solution according to a titanium/aluminum molar ratio of 7:3 to obtain a mixed solution;
(2) And (3) regulating the pH value of the mixed solution to 9 by using a sodium hydroxide solution with the mass concentration of 20%, stirring for 2 hours at room temperature, filtering, cleaning filter residues by using distilled water, drying at 60 ℃, and finally grinding to obtain the arsenic removal medicament.
Comparative example 1
The preparation method of the arsenic removal medicament for the organophosphorus pesticide wastewater comprises the following steps:
(1) Uniformly mixing 0.02M titanium tetrachloride solution and 0.02M aluminum trichloride hexahydrate solution according to a titanium/aluminum molar ratio of 1:9 to obtain a mixed solution;
(2) And (3) regulating the pH value of the mixed solution to 9 by using a sodium hydroxide solution with the mass concentration of 20%, stirring for 2 hours at room temperature, filtering, cleaning filter residues by using distilled water, drying at 60 ℃, and finally grinding to obtain the arsenic removal medicament.
Application test:
organophosphorus pesticide wastewater quality for experiments: COD:15000mg/L, ammonia nitrogen: 850mg/L, total phosphorus: 2550mg/L, inorganic phosphorus: 180mg/L, pH:9.5, tds:5.2%, arsenic: 15.55ppm.
The arsenic removal agents prepared in examples 1 to 3 and comparative example 1 and the conventional arsenic removal agent ferric chloride powder are used for treating organophosphorus pesticide wastewater, and the specific method is as follows: the arsenic removal agents prepared in examples 1 to 3 and comparative example 1 and ferric chloride powder were added to the organophosphorus pesticide wastewater at an amount of 200mg/L, respectively, stirred and mixed at room temperature for 2 hours, and then solid-liquid separated to obtain treated wastewater, and the arsenic content of the treated wastewater was tested and arsenic adsorption amounts of the arsenic removal agents were calculated, wherein the arsenic content was measured according to national standard GB7485-87 diethyldithiocarbamate spectrophotometry (wavelength 510 nm), and the results are shown in Table 1:
TABLE 1
| Water sample | Arsenic content (ppm) | Arsenic removal rate (%) | Arsenic adsorption quantity (mg/g) of arsenic removal agent |
| Example 1 | 7.06 | 54.6％ | 41.4 |
| Example 2 | 8.53 | 45.1％ | 35.1 |
| Example 3 | 7.77 | 50.0％ | 38.9 |
| Comparative example 1 | 15.40 | 1.0％ | 0.8 |
| Ferric chloride powder | 15.30 | 1.6％ | 1.3 (i.e., 1.3mg arsenic/g ferric chloride) |
As can be seen from the test results in Table 1, the arsenic removal agents prepared in examples 1 to 3 of the present invention can efficiently remove arsenic from organophosphorus pesticide wastewater.
Claims (1)
1. A method for treating organophosphorus pesticide wastewater by adopting an arsenic removal agent is characterized in that 200mg/L of the arsenic removal agent is added into organophosphorus pesticide wastewater, stirred and mixed for 2 hours at room temperature, and then solid-liquid separation is carried out to obtain treated wastewater; the preparation method of the arsenic removal medicament comprises the following steps:
(1) Titanium tetrachloride solution and aluminum trichloride hexahydrate solution were mixed in a titanium/aluminum molar ratio of 3:7, uniformly mixing to obtain a mixed solution;
(2) Adjusting the pH of the mixed solution to 9 with a sodium hydroxide solution with the mass concentration of 20%, stirring for 2-4 hours at room temperature, filtering, cleaning filter residues with distilled water, drying, and finally grinding to obtain an arsenic removal agent;
in the step (1), the concentration of the titanium tetrachloride solution is 0.02M, and the concentration of the aluminum trichloride hexahydrate solution is 0.02M;
in the step (2), the drying temperature is 60 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110692983.XA CN113426404B (en) | 2021-06-22 | 2021-06-22 | Preparation method of arsenic removal medicament for organophosphorus pesticide wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110692983.XA CN113426404B (en) | 2021-06-22 | 2021-06-22 | Preparation method of arsenic removal medicament for organophosphorus pesticide wastewater |
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| Publication Number | Publication Date |
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| CN113426404A CN113426404A (en) | 2021-09-24 |
| CN113426404B true CN113426404B (en) | 2023-11-17 |
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| Country | Link |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1289820A (en) * | 1999-09-24 | 2001-04-04 | 中国石油化工集团公司 | Process for dearsenicating hydrocarbon oil |
| CN101648130A (en) * | 2009-06-02 | 2010-02-17 | 清华大学 | Preparing method of titanium-rare earth composite adsorbent capable of efficiently removing arsenic |
| CN102600790A (en) * | 2011-01-20 | 2012-07-25 | 中国科学院金属研究所 | Nanometer cerium oxide hydrate-based arsenic removing material, preparation method thereof and application in arsenic removing |
| CN106999909A (en) * | 2014-11-25 | 2017-08-01 | 格瑞福技术有限公司 | For fluorine ion and phosphorus, the high power capacity adsorbent of the oxo-anions of arsenic and preparation method thereof |
-
2021
- 2021-06-22 CN CN202110692983.XA patent/CN113426404B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1289820A (en) * | 1999-09-24 | 2001-04-04 | 中国石油化工集团公司 | Process for dearsenicating hydrocarbon oil |
| CN101648130A (en) * | 2009-06-02 | 2010-02-17 | 清华大学 | Preparing method of titanium-rare earth composite adsorbent capable of efficiently removing arsenic |
| CN102600790A (en) * | 2011-01-20 | 2012-07-25 | 中国科学院金属研究所 | Nanometer cerium oxide hydrate-based arsenic removing material, preparation method thereof and application in arsenic removing |
| CN106999909A (en) * | 2014-11-25 | 2017-08-01 | 格瑞福技术有限公司 | For fluorine ion and phosphorus, the high power capacity adsorbent of the oxo-anions of arsenic and preparation method thereof |
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| CN113426404A (en) | 2021-09-24 |
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