The quality of typical treated swine wastewater does not pass the effluent standard. There are some nutrients and organic matter, which cause deterioration in the water resources. Recycling this wastewater in a sustainable manner presents an important challenge. This study investigates the possibility of changing valuable matter in swine wastewater to algal, Chlorella sp., biomass and then harvesting by small herbivorous aquatic arthropod, Moina macrocopa. The effluent quality is also evaluated. The unicellular form of Chlorella sp. grows quite well in treated swine wastewater under normal algal culturing conditions. The amount of biomass reaches the normal range (100-260 mg/L) within a short period (2-4 days). However, the suitable'detention time that gives the maximum Chlorella sp. removal efficiency and Moina macrocopa production u,as found to be 2 days. The efficiency of Chlorella sp. removal increased when the starting algal biomass concentration was increased from 100 mglL to 260 mg/L. On the other hand, it did not change after varying the starting number of Moina macrocopa from 1,500 org./L to 3,000 org,/L (P-value > 0.05). The highest efficiency occurred when Chlorella sp. concentration was one milligram per 12 organisms of Moina macrocopa. The characteristics of swine effluent, including suspended solids, OD56e, and COD, were better than the effluent standard. It is recommended that this culturing system is incorporated into the final stage of the wastewater treatment process. The condition of applying 300 g wet weight of Moina macrocopa for one cubic meter of wastewater (3,000 org./L) which has dense algal biomass concentration (100-260 mglL) would yield both the highest wastewater treating efficiency and the maximum Moina macrocopa production within 2 days.