Resource recovery in anaerobic microfiltration osmotic membrane bioreactors

In this study, resource recovery from microfiltration (MF) and forward osmosis (FO) permeates of Anaerobic Microfiltration Osmotic Membrane Bioreactor (AnMF-OMBR) and Upflow Anaerobic Sludge Bed Microfiltration Osmotic Membrane Bioreactor (UASB MF-OMBR) systems was investigated. The composite permeates obtained from continuous treatment of slaughterhouse wastewater using AnMF-OMBR and UASB MF-OMBR systems were considered as liquid fertilizer for agricultural irrigation purposes. The permeates were evaluated according to the Wastewater Treatment Facilities Technical Procedures Communiqué (The technical procedure communication for wastewater treatment plants, which is within the scope of the Water Pollution Control Regulation (SKKY), and agricultural irrigation water (Class A II. Quality) was obtained by mixing with tap water. In the second part of the study, a 22-day liquid fertilizer application was made with the diluted permeates. It has been observed that FO permeates (diluted draw solution) have a more positive effect on the grass growth than MF permeates. In the third part of the study, Class A II. Quality agricultural irrigation water was obtained from the permeate of the advanced treatment of the MF permeate of the systems with nanofiltration and reverse osmosis system (NF/RO), and solid fertilizer (struvite) was obtained from the concentrate. The optimum pH for magnesium ammonium phosphate (struvite) precipitation was determined as 9. As a result of the evaluation of the precipitates by X-ray Diffraction (XRD) analysis, characteristic peaks of struvite were observed. In this thesis study, all effluents of the systems have been evaluated as resources, and the sustainable wastewater management has been aimed with nutrient and water recovery. The systems have been ensured to be operated as "resource recovery systems" rather than "wastewater treatment systems.