University Of Tehran Press Pollution 2383-451X 4 1 2018 01 01 A Novel Open Raceway Pond Design for Microalgae Growth and Nutrients Removal from Treated Slaughterhouse Wastewater 103 110 64335 10.22059/poll.2017.238894.299 EN Adnan Habibi Department of chemical engineering, Islamic Azad University, Science and Research Branch, Tehran, Iran. Abolghasem Teymouri Department of chemical engineering, Islamic Azad University, Science and Research Branch, Tehran, Iran. Hossein Delavari Amrei Department of Chemical Engineering, Faculty of Engineering, University of Bojnord, Bojnord, Iran. Farshid Pajoum Shariati Department of chemical engineering, Islamic Azad University, Science and Research Branch, Tehran, Iran. Journal Article 2017 07 30 The present work investigates nitrate and phosphate removal from synthetic treated slaughterhouse wastewater in a novel open raceway pond with sedimentation zone. For this purpose, microalgae Chlorella salina has been cultivated in synthetic wastewater and sedimentation zone has been added to enhance both algae separation in the system and nutrient removal. The effectiveness of Chlorella salina to treat nitrate and phosphate has been tested in open raceway ponds with harvest system. It has been found that Biomass concentration of the Chlorella salina is 1.35 g/L during 11 days of experiment. Also, maximum specific growth rate of the species in the pond has been 0.74 day-1. Throughout the cultivation period, nitrate and phosphate have been analyzed to show that their average removal efficiencies were 100% and 45%, respectively. It can be concluded that the growth of Chlorella salina in novel open pond system is an effective way to reduce nitrate and phosphate levels in slaughterhouse synthetic wastewater. Also, wastewater is suitable for algal growth.

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