The Experimental Study of Using Calcium Silicate Slag to Recover Phosphorus in Polluted Water

Zhong Yue Luan; Hong Bin Qi; De Hua Li

doi:10.4028/www.scientific.net/AMR.610-613.1595

Paper Titles

Studies on Anoxic Aerobic Alternate Frequency of Oxidation Ditch for Removing Nitrogen and Phosphorus
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A SEM Water Pollutants Emissions Reduction Optimization Model for Pollutant Total Amount Control in a Region
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Removal of Ammonia Nitrogen in Biological Aerated Filter (BAF) Filled with Smaller Ceramsite Particles
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Construction of Recombinant E.coli Expressing a Thermophilic Catalase and its Application in H₂O₂ Wastewater Treatment
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The Experimental Study of Using Calcium Silicate Slag to Recover Phosphorus in Polluted Water
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Modeling and Optimization Research of CFB-FGD Based on Improved Genetic Algorithms and BP Neural Network
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Characteristics and Treatment of Reed Pulping Medium Wastewater by Membrane Bioreactor
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Inquisition to Several Issues in Performance Test of SCR Flue Gas Denitration System
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Degradation of Reactive Black 5 in Aqueous Solution by Double-Dielectric Barrier Discharge
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The Experimental Study of Using Calcium Silicate Slag to Recover Phosphorus in Polluted Water

Abstract:

Using the hydrated calcium silicate slag which was the remain of preparation potassium sulfate, aluminum hydroxide and layered sodium silicate by thermal decomposition insoluble potassium feldspar as crystal seed to recover phosphorus in polluted water. By orthorhombic experiment of the adsorption, we can get the optimize condition: pH value is 5.3, slag concentration is 5g L^-1, the temperature is 35°C, the oscillation time is 8h. Equilibrium isotherms have been determined and analyzed by BET type. The pseudo second-order kinetics equation can be a better fit on adsorption phosphorus process.