ANAEROBİK ÇÜRÜTÜCÜ ATIKSULARININ MİKROALG REAKTÖRLERİNDE ARITILMASI

Abstract

Bu çalışma evsel nitelikli anaerobik çürütücü atıksuyunun (AÇAS) evsel nitelikli atık suların alıcı ortam deşarj standartlarına uygun düzeyde arıtılmasında bakteri ve mikroalg kültürlerinin birlikte ve ayrı ayrı kullanılmasının arıtım verimliliği üzerindeki etkisini incelemek üzere yürütülmüştür. Bakteri ve mikroalg kültürlerinin birlikte kullanıldığı, AÇAS içeriğinin kademeli olarak arıtma tesisi deşarj suyu (AD) ile seyreltilerek işletilen reaktörlerde ulaşılan arıtım verimleri kimyasal oksijen ihtiyacı (KOİ) için %87,9, toplam organik karbon (TOK) için %86,6 ve inorganik karbon (İK) için %84,6 olmuştur. Bununla birlikte atıksu muhtevasındaki fosfatın (PO4 3- -P) %84’ü ve toplam azotun (TA) %100’ü giderilmiştir. Diğer taraftan bakteri ve mikroalg kültürlerinin ayrı ayrı kullanılmasının karşılaştırıldığı deneylerde mikroalglerin, atıksu arıtımında bakterilerden daha iyi bir arıtım sağladığı ancak her iki mikroorganizma topluluğunun birlikte kullanılmasının çok daha etkin bir arıtım sağladığı tespit edilmiştir. Çalışma sonunda Türkiye Su Kirliliği Kontrolü Yönetmeliği Evsel Nitelikli Atık Suların Alıcı Ortam Deşarj Standartlarına (Sınıf: 3) uygun düzeyde arıtım sağlanmıştır.

Keywords

• Mikroalg,Anaerobik Çürütücü,Atıksu Arıtımı

Treatment of Anaerobic Digestion Effluent in Microalgal Bioreactors

Abstract

This study was performed to investigate the effect of combined and separate use of bacteria and microalgae cultures on the efficiency of the treatment domestic anaerobic digestion (AD) effluent to meet the domestic wastewater discharge standards. AD effluent was diluted with waste water treatment plant discharge in different proportions in separate reactors and the treatment efficiency of reactors was compared regarding nutrient removal yields. The highest treatment efficiency was obtained with combined use of bacteria and microalgae cultures and corresponding removal efficiencies were 87.9% for COD, 86.6% for TOC, 84.6% for IC, 84% for orthophosphates and for 100% total nitrogen. On the other hand, it was found that although the treatment efficiencies in the reactors including only microalgae cultures are higher than those including only bacterial cultures, and the combined use of microalgal and bacteria cultures still has the highest treatment efficiency among others at the end of the study, AD effluent was successfully treated according the Turkey Water Pollution Control Regulation Domestic Wastewater Discharge Standards (Class:3). 

Keywords

• Microalgae,Anaerobic Digestion,Wastewater Treatment

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