Optimization of Chlorination Method and Control of Algagenic Odor Compounds in Algae-laden Water Treatment
Using the high algae-laden period reservoir water as raw water,the impacts on pollutants removal and transformation of algagenic odor compounds in algae-laden water treatment by conventional process with different combinations of pre-chlorination and disinfection were studied.Meanwhile,the impacts of chlorination methods on the effects of powdered activated carbon adsorption for the control of algagenic odor compounds were investigated.Results showed that pre-chlorination of algae-laden water could quickly convert algagenic odor compounds like 2-MIB and geosmin from undissolved to dissolved.Conventional process could effectively remove undissolved taste and odor compounds in algae-laden water,whereas it had little removal efficiency on dissolved taste and odor compounds.Pre-chlorination had strong adverse effects on the removal of 2-MIB and geosmin by conventional process.Powdered activated carbon adsorption showed high removal efficiency of 2-MIB and geosmin,but pre-chlorination significantly reduced the overall removal efficiency of 2-MIB and geosmin by powder activated carbon adsorption and conventional process.Therefore,pre-chlorination is not recommended for the treatment of algae-laden water with algagenic odor compounds.
algae-laden watertaste and odor compoundspre-chlorinationdisinfectionpowdered activated carbon
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