CN105521768A - Drinking water purifying agent with arsenic removing function and preparation method thereof - Google Patents
Drinking water purifying agent with arsenic removing function and preparation method thereof Download PDFInfo
- Publication number
- CN105521768A CN105521768A CN201610021024.4A CN201610021024A CN105521768A CN 105521768 A CN105521768 A CN 105521768A CN 201610021024 A CN201610021024 A CN 201610021024A CN 105521768 A CN105521768 A CN 105521768A
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- drinking water
- arsenic
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- purifying agent
- water purifying
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- 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
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
-
- 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
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
-
- 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
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention relates to the technical field of purification of drinking water, and aims to provide a drinking water purifying agent with arsenic removing function and a preparation method thereof. The drinking water purifying agent can effectively remove arsenic in drinking water. The preparation method of the drinking water purifying agent comprises the following steps: dehydrating insoluble humic acid, carrying out washing by using a calcium chloride solution, a nitric acid solution and distilled water, and carrying out soaking in sodium nitrate for 3 hours, and then carrying out low-temperature evaporation to form a solid substance; and fully mixing the solid substance with granular activated carbon the particle size of which is 2-4mm, thereby obtaining the water purifying agent. The water purifying agent is simple and convenient to produce, is high purification efficiency and low in cost, and is suitable for rural areas where the arsenic pollution cannot be treated on a large scale. By virtue of detection, the removal rate of arsenic in drinking water by the water purifying agent is 50% or higher.
Description
Technical field
A kind of clean reagent in drinking water with arsenic removal function and preparation method thereof, is specifically related to a kind of water purification agent utilizing humic acid and active carbon mixing to remove Arsenic in Drinking Water ion, belongs to drink water purifying field.
Background technology
On December 15th, 2004, World Health Organization official announces, and the whole world has at least more than 5,000 ten thousand populations to be faced with the threat of endemic arsenic poisoning, and wherein, great majority are Asian countries, and China endangers one of country the most serious by arsenic poisoning just.Q wherein, arsenic in water body pollutes mainly from arsenic and the exploitation, the smelting that contain arsenic metal, the waste water of the discharges such as process such as the glass of raw material, pigment, former medicine, the production of paper and burning of coal is made with arsenic or in-depth compound, the toxicity of element arsenic is extremely low, arsenide is all toxic, trivalent arsenide compound is stronger than other arsenic compound toxicity, will produce toxic action to human body.The arsenic-containing waste water of content overproof is mixed in agricultural irrigation or aquifer cultivation, through food intake human body, will cause cancer.And irritant to human body skin, mucous membrane, the health of the serious threat mankind.Arsenic-containing waste water is acknowledged as one of public hazards of current most serious harm environment.
The method of current process arsenic-containing waste water is a lot, has the electronation precipitation method, absorption method, ion-exchange, membrane separation process etc.
The method of arsenic pollution control mainly contains chemical method, physical method, biological method and membrane separation process:
Chemical method: refer to chemical reagent make arsenic become human body be difficult to absorb arsenic compound, as, feeding lime, ferrous sulfate and liquid chlorine (or bleaching powder) in arsenic-containing waste water, arsenic is precipitated, then waste residue is processed, arsenic-containing waste water also can be allowed by iron sulfide filter bed or with ferric sulfate, iron chloride iron hydroxide coagulating sedimentation etc.
Physical: mainly to allow containing arsenic sewage by special filter, make arsenic enrichment get up to turn waste into wealth, e.g., activated carbon filter process etc.This method has small investment, and processing cost is low, simple operation and other advantages, is widely used in multiclass Treatment Technique of Arsenic Contained Wastewater, but its weak point is that water can not reuse, and secondary pollution still may exist.
Biological method: mainly refer to that plantation can absorb the plant of arsenic in arsenic contaminated soil or water body, to reach the object absorbing arsenic, as American scientist has found the arsenic in a kind of pteridophyte Absorbable rod contaminated soil recently.
Membrane separation process: mainly to the technology general name that material is separated, mainly comprise electrodialysis, counter-infiltration, liquid-film method.In Treatment Technique of Arsenic Contained Wastewater, be in research and trial period, this method has broad application prospects.
Summary of the invention
The object of the invention is to the above-mentioned deficiency overcoming prior art, a kind of clean reagent in drinking water with arsenic removal function is provided, effectively can remove the trivalent arsenic in drinking water.
The present invention also provides a kind of preparation method with the clean reagent in drinking water of arsenic removal function, and the method is simple to operate, is suitable for suitability for industrialized production.
Having a clean reagent in drinking water for arsenic removal function, is be mixed with granular activated charcoal after treatment by insoluble humic acid to form; Described insoluble matter humic acid and the mass ratio of activated carbon are (1 ~ 5): 1.
Humic acid (Humicacid, HA), also known as humic acid, a kind of natural organic high-molecular compound is the chief component of humus.Humus is soil, main organic principle in nutrition lake, seawater is planted in peat, coal, streams, many highlands, corruption, produces through biodegradation by after organic-biological death.Humic acid is not a single acid, but the mixture containing the functional group such as carboxyl, phenolic hydroxyl group that is complicated, the usual and ion forming complex at occurring in nature.
Active carbon is also known as activated carbon black.Black powder or granular amorphous carbon.Active carbon principal component goes back the element such as aerobic, hydrogen in addition to carbon.Active carbon is structurally irregular alignment due to microcrystalline carbon, between interconnection, have pore, and can produce carbon tissue defects when activating, therefore it is a kind of porous carbon, and bulk density is low, and specific area is large, has very strong adsorption capacity.
As preferably, the granularity of described active carbon is preferably 80 order ~ 120 orders, and described humic acid is preferably coal coal humic acid, and granularity is preferably 200 order ~ 300 orders, the mixture stable mechanical performance that this granularity is made, and adsorption capacity is the strongest.
Described a kind of clean reagent in drinking water with arsenic removal function, comprises step:
1., by a certain amount of humic acid, calcination 1h under 105 DEG C of conditions, makes its fast dewatering; Use the CaCl of 2mol/L again
2after solution soaks 2h, use 1mol/L nitric acid and distilled water washing.
2., after finally soaking 3h in 1mol/L sodium nitrate, low-temperature evaporation forms solids.
3. the granular active carbon being 2 ~ 4 by solids obtained for step 2 and granularity is put into closed container and is fully mixed 10min, obtains this water purification agent.
A kind of clean reagent in drinking water with arsenic removal function according to claim 1 and preparation method thereof, is characterized in that, granular activated charcoal particle diameter is at 2 ~ 4mm, and micropore specific area is at 1000m
2about/g.
The clean reagent in drinking water that the present invention has arsenic removal function to the detection method of the clearance of environmental endocrine disruptors is: join in the simulating pollution water body of certain volume by a certain amount of clean reagent in drinking water with arsenic removal function, constant temperature oscillation certain hour in water-bath, after centrifugal, get the absorbance that supernatant measures solution, gone out the concentration of environmental endocrine disruptors in detected solution by working curve regression equation calculation.
Adsorption capacity q (mg/g) is calculated, q=(C according to formula (I)
0-C
t) V/m
1---formula (I), wherein C
0(mg/L) be the initial concentration of solution, C
t(mg/L) be the concentration of interfering material in solution when adsorption time is t, the volume that V (L) is sample contamination water body, m
1g () is for having the quality of the clean reagent in drinking water of arsenic removal function.
Clearance f (%) is calculated, f=qm according to formula (II)
1/ m
2100%---formula (II), wherein m
2g () is the quality of environmental endocrine disruptors in simulating pollution water body.
The present invention has the following advantages:
Humic acid and active carbon proterties similar, mix, overcome the shortcoming that conventional water purification agent not easily mixes, and result of use is excellent, Nantural non-toxic, tasteless, excellent in physical and chemical performance, can be used for the drinking water emergency pretreatment that deep treatment for drinking water or sudden water pollution event cause, environmentally friendly, pollution-free.
Humic acid has many carboxyls, phenolic hydroxyl group, and easy and metal ion forms chelate, the heavy metal ion in quick adsorption water; Active carbon has porous again, and specific area is large, and the advantages such as high adsorption capacity, not only can adsorb impurities in water, again adsorbable a certain amount of heavy metal ion; The two is large at occurring in nature reserves, and price is low, and production cost is low, and flow process is short, easy and simple to handle, is applicable to suitability for industrialized production.
Detailed description of the invention
Embodiment 1
(1) take insoluble humic acid 10g, wash with water, solable matter is removed, put it in baking oven and toast 1 hour under 105 DEG C of conditions, make its fast dewatering, then use the CaCl of 2mol/L
2after solution soaks 2h, use 1mol/L nitric acid and distilled water washing.After finally soaking 3h in 1mol/L sodium nitrate, low-temperature evaporation forms solids.
(2) humic acid after processing according to step 1: the mass ratio of active carbon (particle diameter is 2mm)=1:1 adds active carbon, puts into closed container and fully mixes 10min, obtain equigranular mixture.
(3) the humic acid activity carbon mixture after step 2 being processed gets 1g, join the heavy Macquer's salt solution that 100ml concentration is 10mg/l, abundant mixing leaves standstill after 10min afterwards and filters, and adds that to record filtrate absorbance according to the developer diphenylcarbazide solution of GB GB7467-87 method preparation and record arsenic content according to GB GB7467-87 method be 0.5mg/l.Arsenic removal rate reaches 95%.
Embodiment 2
(1) take insoluble humic acid 10g, wash with water, solable matter is removed, put it in baking oven and toast 1 hour under 105 DEG C of conditions, make its fast dewatering, then use the CaCl of 2mol/L
2after solution soaks 2h, use 1mol/L nitric acid and distilled water washing.After finally soaking 3h in 1mol/L sodium nitrate, low-temperature evaporation forms solids.
(2) humic acid after processing according to step 1: the mass ratio of active carbon (particle diameter is 2mm)=3:1 adds active carbon, puts into closed container and fully stirs 10min, obtain equigranular mixture.
(3) the humic acid activity carbon mixture after step 2 being processed gets 1g, join the heavy Macquer's salt solution that 100ml concentration is 10mg/l, abundant mixing leaves standstill after 10min afterwards and filters, and adds that to record filtrate absorbance according to the developer diphenylcarbazide solution of GB GB7467-87 method preparation and record arsenic content according to GB GB7467-87 method be 0.4mg/l.Arsenic removal rate reaches 96%.
Embodiment 3
(1) take insoluble humic acid 10g, wash with water, solable matter is removed, put it in baking oven and toast 1 hour under 105 DEG C of conditions, make its fast dewatering, then use the CaCl of 2mol/L
2after solution soaks 2h, use 1mol/L nitric acid and distilled water washing.After finally soaking 3h in 1mol/L sodium nitrate, low-temperature evaporation forms solids.
(2) humic acid after processing according to step 1: the mass ratio of active carbon (particle diameter is 2mm)=5:1 adds active carbon, puts into closed container and fully stirs 10min, obtain equigranular mixture.
(3) the humic acid activity carbon mixture after step 2 being processed gets 1g, join the heavy Macquer's salt solution that 100ml concentration is 10mg/l, abundant mixing leaves standstill after 10min afterwards and filters, and adds that to record filtrate absorbance according to the developer diphenylcarbazide solution of GB GB7467-87 method preparation and record arsenic content according to GB GB7467-87 method be 0.5mg/l.Arsenic removal rate reaches 95%.
Claims (5)
1. clean reagent in drinking water with arsenic removal function and preparation method thereof, is characterized in that, this cleanser uses insoluble humic acid to be mixed with according to a certain percentage with granular activated charcoal after treatment and forms.
2. a kind of clean reagent in drinking water with arsenic removal function according to claim 1 and preparation method thereof, is characterized in that, humic acid is through following process:
By a certain amount of humic acid, under 105 DEG C of conditions, dry 1h, make its fast dewatering; Use the CaCl of 2mol/L again
2after solution soaks 2h, use 1mol/L nitric acid and distilled water washing.
3., after finally soaking 3h in 1mol/L sodium nitrate, low-temperature evaporation forms solids, and the granular active carbon being 2 ~ 4 by solids and granularity is put into closed container and fully mixed 10min.
4., according to claim 1, a kind of clean reagent in drinking water with arsenic removal function described in 2 and preparation method thereof, is characterized in that, granular activated charcoal particle diameter is at 2 ~ 4mm, and micropore specific area is at 1000m
2about/g.
5. according to claim 1,2, a kind of clean reagent in drinking water with arsenic removal function described in 3 and preparation method thereof, is characterized in that, according to different service conditions, the mass ratio of described insoluble matter humic acid and activated carbon is (1 ~ 5): 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610021024.4A CN105521768A (en) | 2016-01-13 | 2016-01-13 | Drinking water purifying agent with arsenic removing function and preparation method thereof |
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|---|---|---|---|
| CN201610021024.4A CN105521768A (en) | 2016-01-13 | 2016-01-13 | Drinking water purifying agent with arsenic removing function and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106824102A (en) * | 2017-03-15 | 2017-06-13 | 南京师范大学 | A kind of efficient absorption heavy metal ion Cd2+Dissolved Organic Matter dipping charcoal and its preparation method and application |
| CN110028125A (en) * | 2019-04-25 | 2019-07-19 | 郑州大学 | A method of water body intermediate ion state organic matter is separated by carrier adsorption of waste residue source nanoparticle |
| CN116328824A (en) * | 2023-03-28 | 2023-06-27 | 上海翊嘉生物科技有限公司 | Cerium oxide cluster nano-enzyme anchored by defective molecular sieve, and preparation method and application thereof |
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| CN1500736A (en) * | 2002-11-13 | 2004-06-02 | 中国科学院生态环境研究中心 | Preparing Method for magnetic active carbon used for water treatment |
| CN1506329A (en) * | 2002-12-10 | 2004-06-23 | 中国科学院生态环境研究中心 | Treating process of underground water with high arsenic content |
| WO2005028376A1 (en) * | 2003-09-19 | 2005-03-31 | University Of Wyoming | System and method for removing arsenite and arsenate from water |
| CN1648064A (en) * | 2004-12-25 | 2005-08-03 | 李玉堂 | Water purifier for removing fluorine and arsenic and preparing method |
| CN102974319A (en) * | 2012-12-11 | 2013-03-20 | 武汉纺织大学 | Drinking water cleaning agent with arsenic-removal function and preparation method thereof |
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2016
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1500736A (en) * | 2002-11-13 | 2004-06-02 | 中国科学院生态环境研究中心 | Preparing Method for magnetic active carbon used for water treatment |
| CN1506329A (en) * | 2002-12-10 | 2004-06-23 | 中国科学院生态环境研究中心 | Treating process of underground water with high arsenic content |
| WO2005028376A1 (en) * | 2003-09-19 | 2005-03-31 | University Of Wyoming | System and method for removing arsenite and arsenate from water |
| CN1648064A (en) * | 2004-12-25 | 2005-08-03 | 李玉堂 | Water purifier for removing fluorine and arsenic and preparing method |
| CN102974319A (en) * | 2012-12-11 | 2013-03-20 | 武汉纺织大学 | Drinking water cleaning agent with arsenic-removal function and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106824102A (en) * | 2017-03-15 | 2017-06-13 | 南京师范大学 | A kind of efficient absorption heavy metal ion Cd2+Dissolved Organic Matter dipping charcoal and its preparation method and application |
| CN106824102B (en) * | 2017-03-15 | 2019-09-24 | 南京师范大学 | A kind of efficient absorption heavy metal ion Cd2+Dissolved Organic Matter dipping charcoal and its preparation method and application |
| CN110028125A (en) * | 2019-04-25 | 2019-07-19 | 郑州大学 | A method of water body intermediate ion state organic matter is separated by carrier adsorption of waste residue source nanoparticle |
| CN110028125B (en) * | 2019-04-25 | 2021-10-29 | 郑州大学 | Method for adsorbing and separating ionic organic matters in water body by using waste residue source nanoparticles as carriers |
| CN116328824A (en) * | 2023-03-28 | 2023-06-27 | 上海翊嘉生物科技有限公司 | Cerium oxide cluster nano-enzyme anchored by defective molecular sieve, and preparation method and application thereof |
| CN116328824B (en) * | 2023-03-28 | 2023-10-13 | 上海翊嘉生物科技有限公司 | Cerium oxide cluster nano-enzyme anchored by defective molecular sieve, and preparation method and application thereof |
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