Inactivation effects on cyclops of zooplankton and influencing factors of alternative oxidants

The inactivation effects of such alternative oxidants as chlorine, chlorine dioxide, ozone, and potassium permanganate on cyclops of zooplankton and the influencing factors under various conditions such as the dose of oxidant, organic substance content, pH value, etc. are discussed, and the synergic removal effect on cyclops with chlorine dioxide pre-oxidation followed by clarification process is investigated. The results show that chlorine dioxide possess more favorable inactivation effect on cyclops than other oxidants. The 100% of inactivation effect may be attained by 1.0 mg/L of chlorine dioxide, in which external factors such as organic matter content and pH value had little influence. The removal effect on cyclops was strengthened by clarification process after chlorine dioxide pre-oxidation.