CN102872793A - Composite adsorption material for removing iodate from water and preparation method for adsorption material - Google Patents
Composite adsorption material for removing iodate from water and preparation method for adsorption material Download PDFInfo
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- CN102872793A CN102872793A CN2012103418458A CN201210341845A CN102872793A CN 102872793 A CN102872793 A CN 102872793A CN 2012103418458 A CN2012103418458 A CN 2012103418458A CN 201210341845 A CN201210341845 A CN 201210341845A CN 102872793 A CN102872793 A CN 102872793A
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Abstract
The invention discloses a composite adsorption material for removing iodate from water and a preparation method for the adsorption material, and belongs to the field of wastewater treatment in environmental protection. The method comprises the following steps of: preparing a calcium aluminum adsorption material from calcium carbonate and aluminum oxide; mixing calcium and aluminum compounds in a molar mass ratio of 3:2, sintering at the temperature of 1,500 to 1,800 DEG C, and putting a product into a 30 to 40 mass percent calcium nitrate solution for fully reacting; and filtering, washing by using deionized water until the solution is neutral, drying at the temperature of 100 to 110 DEG C, grinding, filling the compound in a filler column of the traditional common filtering device to serve as a filtering adsorption material, allowing sewage with the iodate content of 200 to 400mg/L to pass through the filtering device, and treating to ensure that the iodate content is lower than 0.05mg/L. The adsorption material has the characteristics that adsorption efficiency is high, cost is low, effluent is stable and reaches the standard, and the like, the selection range of an adsorbent in the biological wastewater treatment process is expanded, environment is protected, wastes are recycled, and good social and economic benefits are achieved.
Description
Technical field
The present invention relates to a kind of composite adsorbing material of removing iodate in the water and preparation method thereof; be specifically related to utilize lime stone and aluminium oxide to make filtering adsorbing material and process through the pretreated method that contains iodate sewage of traditional physico-chemical process, belong to the dirty water decontamination handles field in the environmental protection.
Background technology
Contain iodate waste water mainly from industrial wastewater, the iodate in the water, chlorite and bromate are important DBPs, and iodate has stronger oxidisability, and eye, mucous membrane, skin and the upper respiratory tract are had excitant; Iodate has combustion-supporting effect, contacts with combustibles sulphur, phosphorus, organic matter, reducing agent, and chemical reaction can occur, even burning, has excitant.The main method of industrial preparation iodate has: utilize elemental iodine that the characteristics of disproportionated reaction can occur in alkaline aqueous solution, can produce iodate; Utilize dissolubility difference larger, iodide are separated with iodate, obtain iodate, get acid iodide after the acidifying; Utilize oxidizing process can obtain bromate and iodate, as in alkaline solution, using Cl
2Oxidation Br
-Or L
-Obtain bromate and iodate; Also the nitric acid of available strong oxidizing property or simple substance oxychloride elemental iodine prepare iodate.HIO
3Can exist with solid form.Be the most stable hydracid, decompose when being heated.
At present, generally use oxidation-reduction method or acid-base neutralization method to process on the engineering and contain iodate waste water.Oxidation-reduction method is the iodate reaction that contains in oxidisability or reducing substances and the waste water by adding in waste water, thereby reaches the purpose of removing chlorate anions; The acid-base neutralization method is by adding the organic matter of alkaline matter or hydroxyl in the solution that contains iodate, be combined with iodate, thereby reaches the effect of removal.
In recent years, in the time of the further Improvement tradition acid-base neutralization of people or oxidation-reduction method, turn to gradually bioanalysis, bioanalysis has efficient, energy-conservation, advantages of environment protection, become acid ion and recovered acid radical ions such as from waste water, removing iodate, and will substitute gradually normal processing method.Biosorption technology with its have adsorption capacity large, selective strong, efficient is high, consumption is few, can effectively process the sight that plurality of advantages such as containing low concentration iodate waste water has attracted numerous researchers.
The present invention is for obtaining a kind of non-living body biological adsorption agent of cheap, high adsorption capacity; provide a kind of lime stone and aluminium oxide of utilizing to make the inorganic filter sorbing material by processing such as mixing, calcinings; realized the comprehensive utilization of the common cheap material of part; protected environment; widened the range of choice of sewage purification biological treatment process adsorbent; realize the resource of discarded object, had good Social benefit and economic benefit.
Summary of the invention
The objective of the invention is for overcoming the deficiencies in the prior art, a kind of method of utilizing calcium aluminium sorbing material advanced treating to contain iodate waste water is provided.The present invention has that adsorption efficiency is high, simple to operation, and cost is low, and stable water outlet reaches country's " integrated wastewater discharge standard ", and the characteristics such as processing procedure non-secondary pollution take full advantage of the production discarded object, have realized the effect of the treatment of wastes with processes of wastes against one another.
The objective of the invention is to be achieved through the following technical solutions:
(1) take lime stone as raw material, calcining makes calcium oxide under 900 ℃～1000 ℃ high temperature, with calcium oxide and alumina lap powdered;
(2) be that 3: 2 ratios are mixed with calcium oxide and aluminium oxide in the mole mass ratio, after fully mixing, with machine with its briquetting shape;
(3) with blocks of solid sintering 15h～20h under 1500 ℃～1800 ℃ temperature, then product is ground to form granule;
(4) granule being put into mass concentration is 30%～40% calcium nitrate solution, stirs 40h～50h with mixer, and it is fully reacted;
(5) then solid particle being filtered, to neutral, is 100 ℃～110 ℃ lower oven dry in temperature with the deionized water washing, makes calcium aluminium sorbing material.
Calcium aluminium sorbing material of the present invention has huge specific area, abundant hole, and this sorbing material has very strong adsorptivity to iodate ion, easily is adsorbed on the surface of solids with iodate formation complex compound, and the acid ion in the solution easily is adsorbed.
Absorption principle of the present invention is:
Calcium, aluminium easily form complex compound with iodate, and the present invention utilizes sorbing material and bromate ion can form complex compound, thereby reach the purpose of bromate in the removal sewage.
Its concrete grammar is:
Calcium aluminium sorbing material is filled in the filled column of tradition filter commonly used and makes filtering adsorbing material; To contain the waste water of iodate by filter, by the iodate in the method removal water that filters; The sorbing material that contains iodate can reclaim iodate and part sorbing material.
Use beneficial effect of the present invention:
(1) the selected raw material limestone of the present invention and aluminium oxide all belong to cheap material, and lime stone can substitute with common stone, still can reach processing requirements after purifying, and cost is low;
(2) sewage treatment method of the present invention is simple, efficient is high, sewage iodate ion content after treatment is little, can not cause water pollution, and iodate and metal material can be recycled;
(3) dispose of sewage advantages of good adsorption effect, efficient of the present invention is high, stable country's " integrated wastewater discharge standard ", the processing procedure non-secondary pollution of reaching of sewage after processing.
The specific embodiment
The technical solution used in the present invention is as follows:
(1) take lime stone as raw material, calcining makes calcium oxide under 900 ℃～1000 ℃ high temperature, with calcium oxide and alumina lap powdered;
(2) be that 3: 2 ratio is mixed with calcium oxide and aluminium oxide in the mole mass ratio, after fully mixing, with machine with its briquetting shape;
(3) with blocks of solid sintering 15h～20h under 1500 ℃～1800 ℃ temperature, then product is ground to form granule;
(4) granule being put into mass concentration is 30%～40% calcium nitrate solution, stirs 40h～50h with mixer, and it is fully reacted;
(5) then solid particle being filtered, to neutral, is 100 ℃～110 ℃ lower oven dry in temperature with the deionized water washing, makes calcium aluminium sorbing material.
Below describe again the present invention in detail with 3 embodiment.
Example 1
Take lime stone as raw material, calcining makes calcium oxide under 900 ℃～1000 ℃ high temperature, with calcium oxide and alumina lap powdered; Be that 2: 1 ratio is mixed with calcium oxide and aluminium oxide in the mole mass ratio, after fully mixing, with machine with its briquetting shape; With blocks of solid sintering 15h under 1600 ℃ temperature, then fall product and grind to form granule; It is 30% calcium nitrate solution that granule is put into mass concentration, stirs 40h with mixer, and it is fully reacted; Then solid particle being filtered, to neutral, is 100 ℃～110 ℃ oven dry in temperature with the deionized water washing, makes calcium aluminium sorbing material, this lamellar compound is filled in the filled column of tradition filter commonly used and makes filtering adsorbing material.
Be that 500mL concentration is that 250mg/L contains iodate waste water by filter with volume, after processing in the water content of iodate be lower than 0.05mg/L.
Example 2
Take lime stone as raw material, calcining makes calcium oxide under 900 ℃～1000 ℃ high temperature, with calcium oxide and alumina lap powdered; Be that 3: 1 ratio is mixed with calcium oxide and aluminium oxide in the mole mass ratio, after fully mixing, with machine with its briquetting shape; With blocks of solid sintering 18h under 1700 ℃ temperature, then fall product and grind to form granule; It is 35% calcium nitrate solution that granule is put into mass concentration, stirs 45h with mixer, and it is fully reacted; Then solid particle being filtered, to neutral, is 100 ℃～110 ℃ lower oven dry in temperature with the deionized water washing, makes calcium aluminium sorbing material, this lamellar compound is filled in the filled column of tradition filter commonly used and makes filtering adsorbing material.
Be that 500mL concentration is that 350mg/L contains iodate waste water by filter with volume, after processing in the water content of iodate be lower than 0.05mg/L.
Example 3
Take lime stone as raw material, calcining makes calcium oxide under 900 ℃～1000 ℃ high temperature, with calcium oxide and alumina lap powdered; Be that 3: 2 ratio is mixed with calcium oxide and aluminium oxide in the mole mass ratio, after fully mixing, with machine with its briquetting shape; With blocks of solid sintering 20h under 1800 ℃ temperature, then fall product and grind to form granule; It is 40% calcium nitrate solution that granule is put into mass concentration, stirs 50h with mixer, and it is fully reacted; Then solid particle being filtered, to neutral, is 100 ℃～110 ℃ lower oven dry in temperature with the deionized water washing, makes calcium aluminium sorbing material, this lamellar compound is filled in the filled column of tradition filter commonly used and makes filtering adsorbing material.
Be that 500ml concentration is that 500mg/L contains iodate waste water by filter with volume, after processing in the water content of iodate be lower than 0.05mg/L.
Claims (2)
1. composite adsorbing material of removing iodate in the water, it is characterized in that: this sorbing material is that primary raw material is prepared from by lime stone and aluminium oxide.
2. a kind of composite adsorbing material preparation method who removes iodate in the water according to claim 1 is characterized in that:
(1) take lime stone as raw material, calcining makes calcium oxide under 900 ℃～1000 ℃ high temperature, with calcium oxide and alumina lap powdered;
(2) be that 3: 2 ratio is mixed with calcium oxide and aluminium oxide in the mole mass ratio, after fully mixing, with machine with its briquetting shape;
(3) with blocks of solid sintering 15h～20h under 1500 ℃～1800 ℃ temperature, then product is ground to form granule;
(4) granule being put into mass concentration is 30%～40% calcium nitrate solution, stirs 40h～50h with mixer, and it is fully reacted;
(5) then solid particle being filtered, to neutral, is 100 ℃～110 ℃ lower oven dry in temperature with the deionized water washing, makes calcium aluminium sorbing material.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104475037A (en) * | 2014-12-04 | 2015-04-01 | 格丰科技材料有限公司 | Porous material capable of removing total phosphorus in wastewater and preparation method of porous material |
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|---|---|---|---|---|
| CN101448561A (en) * | 2006-05-19 | 2009-06-03 | 旭硝子株式会社 | Method of removing halogen gas and remover for halogen gas |
| CN101456617A (en) * | 2009-01-04 | 2009-06-17 | 上海大学 | Method for removing bromate ion in drinking water |
| KR20100030250A (en) * | 2008-09-10 | 2010-03-18 | 한국화학연구원 | Removal method of iodine mixtures from aqueous solution |
| CN102424448A (en) * | 2011-11-01 | 2012-04-25 | 同济大学 | Method for removing perchlorate in water |
-
2012
- 2012-09-04 CN CN2012103418458A patent/CN102872793A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101448561A (en) * | 2006-05-19 | 2009-06-03 | 旭硝子株式会社 | Method of removing halogen gas and remover for halogen gas |
| KR20100030250A (en) * | 2008-09-10 | 2010-03-18 | 한국화학연구원 | Removal method of iodine mixtures from aqueous solution |
| CN101456617A (en) * | 2009-01-04 | 2009-06-17 | 上海大学 | Method for removing bromate ion in drinking water |
| CN102424448A (en) * | 2011-11-01 | 2012-04-25 | 同济大学 | Method for removing perchlorate in water |
Non-Patent Citations (1)
| Title |
|---|
| 张慧芳等: "单质碘、碘酸根和碘离子的吸附研究进展", 《核化学与放射化学》, vol. 33, no. 3, 30 June 2011 (2011-06-30), pages 129 - 135 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104475037A (en) * | 2014-12-04 | 2015-04-01 | 格丰科技材料有限公司 | Porous material capable of removing total phosphorus in wastewater and preparation method of porous material |
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Application publication date: 20130116 |