Reclamation Potential of Onsite Wastewater Post-Treatment with Microalgae: Chemical Elements Perspective

Algae-based wastewater treatment is a promising technology with various applications for excess biomass such as biofertilizer production or valuable elements extraction. The benefits of the have been discussed larger plants (WWTPs), but use microalgae in decentralized has barely reported. current study screens possible resource recovery potential onsite technology, which adds algae-based post-treatment to conventional biological domestic wastewater. effluent from sequencing batch reactor (SBR) household was further processed laboratory conditions using an SBR two local monocultures algae—Klebsormidium nitens (Kützing) Lokhorst and Tetradesmus obliquus (Turpin) M. J. Wynne. decant generated algal were analyzed terms their element content. post-treated slightly better quality irrigation purposes than facility—up 1.6 times increased concentration macro-elements up 1.9 micro elements. However, shows re-use fertilizing agent since it contains macro- micro-elements heavy (hazardous) metal content considerably lower limiting values European national legislations. K. strain may attract interest accumulates metals chromium (36 mg/kgDS), nickel (83 silver (0.7 mg/kgDS) that can be derived turn circular one.