The Research On Adsorbability Of Active Carbon Surface Modification To Drinking Water

The drinking water headwaters sourc suffers organic pollution phenomenon gradually widespread with severity,but the running water factory still adopts a traditional craft to add the chlorine disinfection,making the organic matter in the city running water especially the chloroform content seriously exceeds the allowed figure. The traditional only water craft with difficulty satisfies the production qualified drinking water the request.In view of Yueyang running water company factory water quality,We used the thick nitric, the hypochlorous acid and the ammonia water have carried on the modification to the activated charcoal surface.State clearly studied the factor the influence to study the superficial modification to the activated charcoal adsorption trichloro alkane performance. The research discovered that the nitric acid oxidation may remarkably increase, the activated charcoal surface acidic groups and bases the content,Enhances the activated charcoal the superficial water affinity,Falls to the pHpzc value,And creates the activated charcoal structure to cave in the reduction which accumulates with the relative surface.Thus in the activated charcoal adsorption drinking water has the slight pollutant performance to have the serious influence. Take removes in the water to have the slight pollutant as the goal activated charcoal surface modified direction is:the reduced surface lactone base and the carboxyl group and so on contain the oxygen functional group the content, Increase activated charcoal surface sparse river characterThe modified activated charcoal in has a drink together in the water used adsorption treating processes,A weak basicity environment is good. Because in the drinking water has the slight pollutant content to be low,May use the ideal solution adsorption theoretical model (IAST) to process,The result is satisfying,This model to studies the activated charcoal to add water has the slight pollutant the adsorption rule to have the extremely important guiding senseIn addition,The solute measurement replacement adsorption model (SDM-A) also obtained to the above research system has imagined not the but actually result,Namely appeared "V" the glyph extension broken line in adsorption isothermal chart. This point correspondence saturated adsorptive capacity, May use for to judge the monolayer and the polymolecular layer adsorption point of demarcation.Using the aqua fortis, the hypochlorous acid and the ammonia water have carried...