Study On Theadsorption Of Humic Acid In The Water By Resin HPD100

Northeast because of its specific climate and geology characteristics, the higher humicsubstances in reservoir source which were hard to remove, a series of influence emerged inmany local cities to the water supply safety. In present, the mainly removal technologies forhumic substances in water mainly include the membrane filter, the activated carbon andbiodegradation, etc, however, the shortcomings are high cost and low adsorption capacity.Therefore,tiis essentialto seeksomeeconomicaladsorptionmaterials withgoodselectivityandhigh adsorpyionpropertiesto removehumic substances.Inthis dissertation,the idealproduct-surface modified hypercrosslinked macroporousresinwith animo grafted, was to improve the adsorption performance of adsorption resins.Furthermore, the humic substances adsorption properties and mechanisms of the stntheticproduct were studied systematically with humic substances as the target pollutants. The maincontributionsareasfollows:Three kinds of macroporous adsorption resins（HPD100,HPD300and D-101）was usedto make static adsorption experiment. Found the best absorbent HPD100with good adsorptioneffect. The experiment shows that the biggest static adsorption quantity of HPD100was1.52mg/gdryresinundertheconditionofnormaltemperatureandpHwas7.Graft amino on the surface of HPD100, use the two kinds of resins to do dynamicadsorptionexperiment anddynamic desorptionexperiment.The dynamic adsorption experiment results show that: the adsorption quantity of themodified macroporousadsorptionresinwas1.85mg/mLin4BV/h velocityandadsorptionratewas83.6%. Afterwarming adsorptioneffect becomespoor,heatingupgoagainsttheadsorption,it proved that macroporous adsorption resin has a physical adsorption properties. And thethermodynamic parameters of the adsorption mechanism research showed that: the modifiedmacroporous adsorption resin had both physical absorption and chemical absorptioncharacteristics.The desorption experiment results show that: NaOH solution has the best effect. Everytime the fresh NaoH solution are used for resin to desorband ues NaoH solutioncircularly, theformer adsorptionratewas higher thanthe latter,the formerdesorption rate was higher than thelattertoo,theformeradsorptionratecanreach50.13%evenrenewable sixtimes.Conduct the dynamic adsorption and the desorption experiments with the Micropipettemountain reservoir water, the modified macroporous adsorption resin results was that: theadsorption was0.85mg/mL, adsorption rate was54.3%, the desorption rate was76.1%, theremovalrateofCODMnwas71.1%withvelocity is4BV/h. Finally, this treatment processhadbeenengineering applicationdesigned.The conclusion was: the modified absorbents adsorption capacity was higher and had a certain amount ofchemical adsorption selectivity, it also has the advantages ofgood desorptionperformance, lowcostandconvenient maintenanceetc.