Influence Of Seed Loads On Start Up Of Modified Anaerobic Hybrid Baffled (MAHB) Reactor Treating Recycled Paper Wastewater

Siti Roshayu Hassana, Nastaein Qamaruz Zaman and Irvan Dahlan ()
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Siti Roshayu Hassana: Faculty of Bioengineering and Technology, Universiti Malaysia Kelantan, Campus Jeli, Locked Bag No. 100, 17600, Jeli, Kelantan, Malaysia.
Nastaein Qamaruz Zaman: School of Civil Engineering, Universiti Sains Malaysia, Engineering Campus, Seri Ampangan, 14300 Nibong Tebal, Pulau Pinang, Malaysia.
Irvan Dahlan: Solid Waste Management Cluster, Science and Engineering Research Centre, Universiti Sains Malaysia, Engineering Campus,Seri Ampangan, 14300 Nibong Tebal, Pulau Pinang, Malaysia.

Engineering Heritage Journal (GWK), 2017, vol. 1, issue 2, 5-9

Abstract: The startup and performance of 58 L modified anaerobic hybrid baffled (MAHB) reactor operated under mesophilic conditions (35 ̊C) were investigated. The performance data of MAHB reactor and its influence of seed loads and start up process with regards to chemical oxygen demand (COD) removal by using various seed arrangement are compared. Three different seed loads were evaluated. Similar start up strategies were adopted in all systems, using a constant hydraulic retention time (HRT) of 4 days and influent chemical oxygen demand (COD) concentration of 750 mg/L. This present study was done to compare the result for COD removal, pH, methane concentration, and solid content in terms of volatile suspended solids (VSS) at three different start up. Start up 3 shows better reactor performance with highest COD removal (87%), stable system pH, and higher methane content (>65%). At the end of experiment, methanogen bacteria were observed in the MAHB reactor using autofluorescene microscope and scanning electron microscope (SEM) identification. Population of most probably Methanosarcina, Methanasaeta and Methanobacterium were present in the MAHB reactor which are responsible to produce methane in the system.

Keywords: Anaerobic digestion; MAHB reactor; seed loads; start-up strategies (search for similar items in EconPapers)
Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:zib:zbngwk:v:1:y:2017:i:2:p:5-9

DOI: 10.26480/gwk.02.2017.05.09

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