Rare Earth Is Smelted The Handle Research Of Chlorine Ammonia Waste Water Ammonia Nitrogen

This is according to the subject : Rare Earth is smelted waste waterto study remove ammonia nitrogen , and inspected the process flow of sour lawmetallurgy and alkali law metallurgy of rare Earth the two kinds of types thatthe wet law is smelted in smelting. Combine smelts the process flow. studied thatrare Earth smelts the way and rare Earth that the waste water the give rise tokind smelted waste water and rare Earth is smelted the pollution that ammonianitrogen created in the waste water to the environment , as well as the homeand abroad smelts the administering present situation of waste water to rareEarth further. Studying the result indicate : Ammonia nitrogen is one of majorpollutant that Rare Earth is smelted in the waste water , and content is veryhigh . Be directed against big present situation of rare Earth consistency smeltedin the waste water ammonia nitrogen , checkout handle technology of fairly morevarious ammonia nitrogen of synthesis , and puts forward to use to titrate thatthe law checkout smelts in the waste water ammonia nitrogen content , and selectchemistry means of sediment and ion ( zeolite ) exchange law jointly to dealwith to smelt ammonia nitrogen in the waste water in two stages . In the experimentcourse , the checkout goes out in the chlorine ammonia waste water ammonianitrogen content to serve as 13031.4 mg/l by way of ammonia nitrogen imitateswater kind the handle experiment , defined the chemistry means of sediment andion exchange law influence factor remove ammonia nitrogen respectively .The chemistry means of sediment chiefly are PH value remove the influence factor of ammonia nitrogen and reaction time t , reaction temperature T as well as intakes ammonia nitrogen consistency C0 .The factor is when controlling : PH=9. 0 , t=1.0h and Mg : N : P=1. 3: 1. 0: 1. 1 and the C0=500-10000mg/l and yield= 60-90% . Primary water waste water is under this condition after reaching the optimum control condition , and by way of three such continuouss processing , ammonia nitrogen content is by original 13031.4 mg/1-2006. 8 mg/1-563. 9 mg/l-220.5 mg/1 serve as second handle stage zeolite ion exchange law condition deal with the create. The ion exchange law chiefly is reaction time t , PH ,reaction temperature T remove the influence factor of ammonia nitrogen and intakes ammonia nitrogen consistency C0. The factor is when controlling : T=1.0h , PH=9. 0 and T = 20 , C0=100-300mg/l and yield n= 80鈥?5% . Through the chemistry means of sediment deals with goes up clearly liquid appears above water , and utilization ion ( zeolite ) exchange law is passed and is once deal with under each optimum control condition , upward clearly the liquid appears above water , and ammonia nitrogen content descends to 19. 7mg/l by 220.5 mg/l. Rare Earth is smelted chlorine ammonia waste water as a result of the jointly handle of in two stages chemistry means of sediment and ion exchange law , and the handle result fits theory calculation , and ammonia nitrogen achieves the placing in proper order standard .