Rare earth chloride experimental study of wastewater treatment
Everbeen magnets supply you the rare earth magnets such as neodymium magnets,ceramic magnets,which is the strongmagnets and permanent magnets.and rubber magnets,fridge magnets,Refrigerator Magnets etc.
Xiamen Everbeen Magnet Electron Co.,Ltd. http://www.chinamagnets.biz
Add:Unit H, 4F Rihua Mansion, No. 8 Xinfeng 2nd road, Torch Hi-Tech Zone, Xiamen, China.
Tel:0086-592-5781916
Fax:0086-592-5123653
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This article is for the Baotou Rare Earth chloride for wastewater treatment and resource studies.Rare earth chloride in the production of wastewater is one of the rare earth carbonate generated in the process, including the mother liquor and water lotion.Most companies have a high concentration of mother liquor to evaporative crystallization of ammonium chloride production of chemical products.However, and solution concentration is low, a large amount of water, if the direct evaporation and crystallization, high energy consumption, enterprise unbearable.The topics to Baotou City, a rare earth chloride emissions from wastewater plant as the research object, the use of air stripping and sodium zeolite adsorption method combined were washed to remove ammonia nitrogen wastewater.
The main topic is divided into stripping experiments and sodium zeolite adsorption of two parts.Stripping experiments, including single factor and orthogonal two experimental parts.Single factor experiments to determine the stripping efficiency of the four main factors - temperature, pH, gas-liquid ratio and the optimum stripping time parameters.Through orthogonal experiments: ammonia wastewater stripping of rare earth elements the efficiency of primary and secondary order: pH value of> temperature> stripping the time> gas-liquid ratio, pH = 11.0, stripping temperature = 40 β, blowing off time =3.5h, gas-liquid ratio = 5000, under the experimental conditions, the use of air stripping process, rare earth chloride content of ammonia nitrogen wastewater by 10025.70mg / L reduced to 230.59mg / L, the removal rate of up to 97.70%, blow extrusion of ammonia availableacid absorption, made of ammonium sulfate recycled.Na-zeolite adsorption experiment consists of three parts: the preparation of sodium-type zeolite, adsorption, adsorbent regeneration.Single factor experiment, the effects of sodium zeolite adsorption of the three main parameters, namely, pH, dosage and zeolite adsorption time of the optimal parameter values.
Through orthogonal experiments: Adsorption of sodium ammonia affect the efficiency of primary and secondary order factors: dosage> adsorption time> pH value, pH = 7.0, dosage = 20.0g, adsorption time is 3h,experimental conditions, after adsorption, the nitrogen content of wastewater can be increased from 230.59mg / L down to 24.15mg / L, the removal rate of up to 89.53%.Ammonia nitrogen wastewater can meet emissions standards.Zeolite regeneration experiments show that Zeolite regeneration best calcination temperature was 450 β, baking time is 1.5h, with regeneration times increase in ammonia removal efficiency decreased.Stripping and the combination of sodium zeolite adsorption treatment of rare earth chloride Wastewater, wastewater treatment for the rare earth to provide a reliable reference.
Everbeen magnets supply you the rare earth magnets such as neodymium magnets,ceramic magnets,which is the strong
magnets and permanent magnets.and rubber magnets,fridge magnets,Refrigerator Magnets etc.
Xiamen Everbeen Magnet Electron Co.,Ltd. http://www.chinamagnets.biz
Add:Unit H, 4F Rihua Mansion, No. 8 Xinfeng 2nd road, Torch Hi-Tech Zone, Xiamen, China.
Tel:0086-592-5781916
Fax:0086-592-5123653
E-mail:sales@china-magnet.net
