Application of Moving Bed Biofilm Process for Biological Organics and Nutrients from Municipal Wastewater

Abstract

Abstract:In this study, experiments have been conducted to evaluate the organics and nutrients removal from synthetic wastewater by a laboratory scale moving bed biofilm process. For nutrients removal, moving bed biofilm process has been applied in series with anaerobic, anoxic and aerobic units in four separate reactors. Moving bed biofilm reactors were operated continuously at different loading rates of nitrogen and Phosphorus. During optimum conditions, close to complete nitrification with average ammonium removal efficiency of 99.72% occurred in the aerobic reactor. In the aerobic reactor, the average specific nitrification rate was 1.8 g NO x -N kg VSS. The results of the average effluent soluble COD concentration from each reactor showed that denitrification process in the second anoxic reactor consumed most of the biodegradable organic matter. As seen from the results, denitrification rate has increased with increasing NO x -N loading in the second anoxic reactor. The aerobic phosphate removal rate showed a good correlation to the anaerobic phosphate release rate. Moreover, phosphate removal rate showed a strong correlation to the phosphate loading rate in the aerobic reactor. In optimum conditions, the average SCOD, total nitrogen and phosphorus removal efficiencies were 96.9, 84.6 and 95.8%, respectively. This study showed that the moving bed biofilm process could be used as an ideal and efficient option for the total nutrient removal from municipal wastewater.

Performance Evaluation of Sewage Treatment Plant Based on MBBR Technology - A Case Study of Kaithal Town Haryana India

“…Odegaard, (2006) operated MBBRs similarly to the activated sludge process with the addition of freely moving carrier media. Kermani M., et al (2008) conducted the study to evaluate the organics, phosphorus and nutrients removal from synthetic wastewater by a laboratory scale moving bed bio film process.Delnavaz et al, (2008) suggested that MBBR is a suitable alternative for common activated sludge reactors in treating domestic and industrial wastewaters in commercial scale.There are no perfect methodology to evaluate overall efficiency of wastewater but degree of treatment is identified according to its reuse into different fields. During the period of study (First week of January 2014-First week of April 2014) samples are collected once in a week from the inlet and outlet point of wastewater treatment plant based on MBBR technology, results so obtained are summarised in table …”

Bacterial community structure and removal performances in IFAS-MBRs: A pilot plant case study

“…In particular, MBBR processes rely on the use of small plastic carrier elements that are kept in constant motion throughout the entire volume of the reactor, for biofilm growth (Ødegaard, 2006;Di Trapani et al, 2008. These systems are especially useful when slowly growing organisms as nitrifiers have to be maintained inside a wastewater treatment plant (WWTP) (Kermani et al, 2008). When combined with a MBR system realizing a MBMBR process, there is the potential to utilize best characteristics of both biofilm processes and membrane separation (Ivanovic and Leiknes, 2008).…”

Remove Organic and Inorganic Contaminants in the Waste Oil Using MBBR, Nano Reactor and Physical Methods

“…The calculated COD/N/P ratio of the syntheticwaste water was 100/5/1 [6]. The waste water was enriching with the macro-nutrients by adding urea as nitrogen source and K 2 HPO 4 as phosphorus source [4]. NH-N ranged from 25-125 mg/lit and po4-p ranged from 5-25 mg/lit were prepared and used as feed to the systemBy the way, vermin-compost leachate was used for injection and enrichment of waste water.…”

“…During the past decade, it has been successfully used for the treatment of many industrial effluents including pulp and paper industry waste, poultry processing waste water, cheese waste, phenolic waste water, dairy waste water and municipal waste water [4]. This paper proposes a new methodology for treatment waste water.…”