Lots Of Treatments To Doing Away With Nylon 66 Salt Waste Water With Nitric Acid

To control the nitrogen-contained water pollution economically and effectively is an important subject now. Considering the character of nitrate and the main process techniques involved, try with compare various methods handles Nylon 66 salts contain the sour waste water, including the chemistry takes off the nitrogen method, anti infiltration method, denitrification method, activated sludg method, ion exchange method etc. Pass the comparison to choose finally to handle with the ion exchange method Nylon 66 salts contain sour waste water. Combined to expatiate the ion exchange theories and apply the technical and domestic and international present condition systematically with develop the trend, introduce the resinous characteristic in weakly basic anion exchange resins, put forward to handle with the weakly basic anion exchange resin Nylon 66 the way of salt industrial waste water. Put forward according to waste water fluid matter circumstance and resinous characteristics in weakly basic anion exchange resin:"weakly basic OH resin and weakly acidic H resin", "weakly basic OH resin alone", "strongly acidic H resin and weakly basic OH resin". Pass to the resinous choice, experiment the research through a series, make sure the adoption to the Nylon 66 salt industrial waste waters have bestly the weakly basic anion exchange resin in D354 in type in big bore resin of handling the result proceeds to handle. It has stronger anti- oxidize the ability to the nitric acid ion, the round ball rate still is up to 98.81% after whetting, all exchange the capacity the descent the rate only for 2.24%, it has stronger ability to do away with the nitric acid ion stronger, adopt the strong and sour the bed of H establishes with it, can away with discard the aquatic nitric ion more effectively,the rate attain 99% above. And pass the comparison of three kinds of experiments project, choice the best method"strongly acidic H resin and weakly basic OH resin" in result is used as the nylon 66 salt industrial waste waters handles method. Because adopting the strong acidic resin, making the period of system water become short, make strong acidic resin rebirth difficulty, cause the liquid waste processing expenses higher, therefore we proceeded the excellent turning to the craft, changing "strongly acidic H resin and weakly basic OH resin". And proceeded to invest to the excellent craft turning behind to estimate with the production cost, the cost recover to synthesize aqueously at 0.4yuan/t or so.Finally the text introduced the restore of iron filters to handle nylon66 salt industrial waste water, can use the water keeps neuter gender, combining can lower the electric conductivity rate of the waste water availably, but the ability to the ion nitric acid was weaker, if can develop the restore of iron to doing away with the ion nitric acid better, then the restore of iron percolation will become to the most for handles ideally technique to contain the nitric acid waste water.