Laboratory Research of Using Activated Carbon to Dispose the Wastewater Containing Lead

Abstract

Wastewater containing lead is dangerous to the health of human being and plants and animals. In recent years, people use different methods to deal with wastewater containing lead, such as activated carbon absorption material to take in lead ions. This study introduces the absorption action and mechanism of activated carbon to absorb lead ion in wastewater. And discussing the influence of adsorption effect when some factors are different, e.g., the different adsorbent dosage, stir time, pH, concentration of wastewater and adsorbent regeneration etc. Experimental results show that when the activated carbon dosage is 20 g/L stirring at room temperature (110 rpm) for 0.5 h, pH 6-7, after processing, the removal rate of lead ion in wastewater is up to the best, the residual concentration is 0.08 mg/L, below the standard of national comprehensive discharge standard (GB25466-2010).