Performance of Microalgae Chlorella sp. to Remove Phosphate in Domestic Wastewater Using Oxidation Ditch Algae Reactor (ODAR)

Jihan Ilvi Nurdiana (Department of Environmental Engineering, Engineering Faculty, Universitas Pembangunan Nasional “Veteran” Jawa Timur, Surabaya 60294, Indonesia)
Ana Mauidatul Khasanah (Department of Environmental Engineering, Engineering Faculty, Universitas Pembangunan Nasional “Veteran” Jawa Timur, Surabaya 60294, Indonesia)
Euis Nurul Hidayah (Department of Environmental Engineering, Engineering Faculty, Universitas Pembangunan Nasional “Veteran” Jawa Timur, Surabaya 60294, Indonesia)
Naniek Ratni Juliardi A.R (Department of Environmental Engineering, Engineering Faculty, Universitas Pembangunan Nasional “Veteran” Jawa Timur, Surabaya 60294, Indonesia)

Nusantara Science and Technology Proceedings
2nd International Conference Eco-Innovation in Science, Engineering, and Technology

Domestic wastewater contains high organic and inorganic materials. One alternative treatment that can be used is to use Oxidation Ditch Algae Reactor with microalgae Chlorella sp. The reactor is expected to reduce the concentration of phosphate in domestic wastewater. This study aims to determine the effectiveness and role of microalgae Chlorella sp in degrading phosphate in domestic wastewater. The variations used in this study were variations in the ratio of the volume of waste to microalgae (1: 0 and 1:2) and variations in conditions (oxic and oxic-anoxic). This research was conducted for five days each time running. The optimum yield of phosphate removal occurred under oxic-anoxic conditions with a volume ratio variation of 1:2, which was 78.81%. This study indicates that the microalgae Chlorella sp is effective for removing phosphate in domestic wastewater.