A kind of efficient adsorption pillar for the bromate in drinking water detection
Technical field
The utility model relates to a kind of efficient adsorption pillar for the bromate in drinking water detection.
Background technology
Drinking water disinfection is to control pathogenic bacterium in the water, guarantee human life safely and the important technical of using, and the sterilization method that present tap water is commonly used mainly contains 4 kinds, i.e. chlorine disinfectant method, chloramine disinfection, ozone disinfection and disinfection by chlorine dioxide method.Use ozone to carry out the aroma and flavor that drinking water disinfection can improve tap water effectively, have simultaneously decolouring, kill microorganisms, Oxidation of Fe
2+, Mn
2+Isoionic effect, therefore be counted as a kind of very promising Drinking Water Sanitization Technology, but in using the ozonization process, can produce disinfection byproduct (DBP) (DBPs) and affect HUMAN HEALTH, disinfection byproduct (DBP) is mainly some oxygen containing compounds, such as hydrogen peroxide, aldehydes, ketone, carboxylic acid, ketone acid, bromo compound and inorganic halogen oxide etc.
Because bromide anion (Br in the nature water source
-) be extensively to exist, the way of production mainly contains seawater intrusion surface water and groundwater waterbearing stratum mineral dissolution, and the production of exploitation potassium ore deposit, colliery and soda etc. all may cause bromide anion (Br in the water in the mankind's activity
-) increase of content, when therefore using ozonization, just have a certain amount of disinfection byproduct (DBP) bromate and produce.Bromate is defined as the human suspect carcinogen of a kind of 2B level (having higher carcinogenic possibility) by international tumor tissues, developed country and China have all formulated the strict requirement of limiting the quantity of (10 micrograms per litre), the detection method of stipulating in the GB is ion chromatography, but chromatography of ions is expensive, and can not be used for field quick detection.Be adapted to on-the-spot method for quick, brought difficulty because its content is very low to detection, therefore to concentrate bromate, by domestic and international main academics search engine as: the results such as Baidu, Google show, the concentrated method of bromate in drinking water is mainly microwave-oven-heating concentrated, but the time that microwave heating concentrates is oversize, energy consumption is large, and concentration process can not be finished at the scene.
Therefore research and development are applicable to the device of on-the-spot fast concentrated bromate in drinking water, and are significant.
The utility model content
The utility model is made improvement for the problem that above-mentioned prior art exists, and it is short and need not the efficient adsorption pillar that bromate in drinking water detects that is used for of energy consumption that namely technical problem to be solved in the utility model provides a kind of adsorption time.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of efficient adsorption pillar for the bromate in drinking water detection, comprise packed column, be disposed with from the bottom up the first sieve plate, stratiform Ripon adsorption layer, strong basicity ion-exchange fiber layer and the second sieve plate in the described packed column.
Further, the internal diameter of described packed column is 10-30mm, and volume is 50-100 mL.
Further, the material of described packed column is PE.
Further, the sieve diameter of described the first sieve plate is less than the sieve diameter of the second sieve plate, and the sieve diameter span of described the first sieve plate and the second sieve plate is 20-120 μ m.
Further, the material of described the first sieve plate and the second sieve plate is the glass core.
Further, the bottom of described packed column is provided with water out adapter, and described water out adapter is connected with small cap with holes.
Further, the material of layered Ripon adsorption layer is the stratiform Ripon, and its particle diameter is the 80-200 order, and its weight is 0.5-2g.
Further, the material of described strong basicity ion-exchange fiber layer is the strong basicity ion-exchange fiber, and its weight is 0.1g-1.0g.
Further, the weight ratio of layered Ripon adsorption layer and strong basicity ion-exchange fiber layer is 5:1-5:5.
Compared with prior art, the utlity model has following beneficial effect: the efficient adsorption pillar that should be used for the bromate in drinking water detection can adsorb water sample with bulk mass and finish the Adsorption Concentration process by arranging of the first sieve plate, stratiform Ripon adsorption layer, strong basicity ion-exchange fiber layer and the second sieve plate, the Adsorption Concentration time is short, efficient is high and need not energy consumption, is applicable to on-the-spot fast concentrated bromate in drinking water.
The utility model is described in more detail below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the organigram of the utility model embodiment.
Among the figure: 1-packed column, 2-the first sieve plate, 3-stratiform Ripon adsorption layer, 4-strong basicity ion-exchange fiber layer, 5-the second sieve plate, 6-water out adapter, the small cap that 7-is with holes.
Embodiment
As shown in Figure 1, a kind of efficient adsorption pillar for the bromate in drinking water detection, comprise packed column 1, be disposed with from the bottom up the first sieve plate 2, stratiform Ripon adsorption layer 3, strong basicity ion-exchange fiber layer 4 and the second sieve plate 5 in the described packed column 1.
In the present embodiment, the material of described packed column 1 is PE, and the internal diameter of described packed column 1 is 10-30mm, and volume is 50-100mL; The material of described the first sieve plate 2 and the second sieve plate 5 is the glass core, and the sieve diameter of described the first sieve plate 2 is less than the sieve diameter of the second sieve plate 5, and the sieve diameter span of described the first sieve plate 2 and the second sieve plate 5 is 20-120 μ m.The detection volume of water sample that should adsorb for the efficient adsorption pillar that bromate in drinking water detects is 200-1000mL.
In the present embodiment, the bottom of described packed column 1 is provided with water out adapter 6, and described water out adapter 6 is connected with small cap with holes 7 with the flow velocity of control elutriant.The material of layered Ripon adsorption layer 3 is the stratiform Ripon, and its weight is 0.5-2g, and its particle diameter is the 80-200 order; The material of described strong basicity ion-exchange fiber layer 4 is the strong basicity ion-exchange fiber, and its weight is 0.1g-1.0g, and the weight ratio of this stratiform Ripon and this strong basicity ion-exchange fiber is 5:1-5:5.
Wherein, the making method of this stratiform Ripon is as follows: (1) takes by weighing the Mg (NO of certain molar ratio
3)
26H
2O, Al (NO
3)
39H
2O, NaOH and Na
2CO
3(2) with deionized water ultrasonic dissolution Mg (NO
3)
2.6H
2O and Al (NO
3)
3.9H
2O is to make mixing salt solution, with deionized water ultrasonic dissolution NaOH and Na
2CO
3To make mixed ammonium/alkali solutions; (3) mixing salt solution and mixed ammonium/alkali solutions are added in the beaker simultaneously, and violent stirring; (4) mix beaker to be placed on after complete and continue to stir certain hour on the magnetic stirring apparatus; (5) after stirring is finished beaker is inserted in the thermostat water bath, the constant temperature certain hour discards the supernatant liquor in the beaker at a certain temperature; (6) use the deionized water washing and precipitating, every the 2h repetitive operation once, until the pH=7 of supernatant liquor in the beaker, and guarantee that the time dimension of whole constant temperature water bath process is held in 24h; (7) after ageing and washing are finished, the oyster white mashed prod is transferred to the centrifugal moisture that discards in the 50mL centrifuge tube, the centrifugal throw out that obtains dry for some time under the certain temperature in baking oven, oven dry is till can grind; (8) grinding is sieved after the oven dry, namely makes hydrotalcite-based compound (LDHs); (9) LDHs that makes is placed muffle furnace, at a certain temperature roasting for some time, make Mg/Al composite oxides (CLDH), prepared product is positioned in the moisture eliminator saves backup.
The above only is preferred embodiment of the present utility model, and all equalizations of doing according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.