Nitrogen Removal Performance in Bioreactor Filters Using Intensive Shrimp Pond Solid Waste and Anammox Bacterial Inoculum
Guno Gumelar1, Zulkarnaini Zulkarnaini2, Elmi Zainuddin3

1Brackishwater Aquaculture Development Center Takalar, Ministry of Marine Affairs and Fisheries
2Faculty of Engineering, Andalas University
3Faculty of Marine Science and Fisheries, Hasanuddin University

Abstract

Intensive shrimp culture waste contains high nitrogen which can reduce water quality and environmental carrying capacity. Anaerobic ammonium oxidation (anammox) is a potential and economical nitrogen removal process. This research aimed to analyze the performance of nitrogen removal in two bioreactor filters (FtBR) based on different inoculum. Reactor 1 used intensive shrimp Ammonium and nitrite concentrations of 70-100 mg-N/L each were added to seawater which had been sterilized as artificial wastewater and flowed to the reactor with 24-hour HRT. After 120 days of research, the maximum nitrogen removal performance with parameters ACE, NRE, NRR for reactors 1 and 2 were 82.48%, 72.58%, 0.12 kg-N/m3.h and 83.06%, 63,59%, 0.10 kg-N/m3.h. Nitrogen stoichiometric ratios were 1:1,40:0,12 and 1:1,13:0,14, which were close to the stoichiometry of the anammox process. From the results of this research, the anammox process can take place well and can be a new method for the development of intensive shrimp culture waste treatment.

Keywords: Anammox- nitrogen removal- shrimp pond waste

Topic: Sustainable Aquaculture (International)