Moving Bed Biofilm Reactor Articles on Environmental XPRT

The application of moving bed biofilm reactor to denitrification process after trickling filters

The paper presents research of a prototype moving bed biofilm reactor (MBBR). The device was used for the post-denitrification process and was installed at the end of a technological system consisting of a septic tank and two trickling filters. The concentrations of suspended biomass and biomass attached on the EvU Perl moving bed surface were determined. The impact of the external organic ...

Oct. 8, 2016

By IWA Publishing

Modelling of moving bed biofilm membrane reactors (MBBMR) for on-site greywater treatment

The study evaluates with a mechanistic model the pilot plant results of a combined moving bed biofilm process and membrane filtration (MBBMR) treating single household greywater. It mainly includes the simulation of reactor hydraulics, degradation of pollutants, development of biomass and settlement of sludge. Iterative calibration was made with steady-state results of a 10-month pilot test. The ...

Apr. 27, 2015

By IWA Publishing

Is Your Moving Bed Biofilm Reactor (Mbbr) Running On All Cylinders?

Evaluation of a full-scale MBBR process for nitrification is reported. Performance of the MBBR was found to be highly dependent on the hydraulic characteristics of the basin which could be optimized with improved influent flow distribution at the basin inlet. Installing a baffle on the influent pipe or introducing influent at multiple points located laterally across the entire influent end of the ...

Jan. 1, 2005

Degradation of aromatic compounds using moving bed biofilm reactors

The removal of toxic phenolic compounds from industrial wastewater is an important issue to be addressed. Phenolic compounds such as phenol, hydroquinone and pyrogallol are used in different industries which end into their wastewaters. They are considered as priority pollutants because of their high toxicity at low concentrations. Phenol is an important raw material in petrochemical, ...

Mar. 27, 2006

By University of Tehran

Characteristics of municipal wastewater treatment by moving-bed biofilm reactor

In this paper, the bio-activity of activated sludge was investigated using Oxygen Uptake Rate (OUR) as an indicator. The activity of ammonium oxidation and COD removal of both attached- and suspended-growth sludge was determined under different temperature and organic loading rates. The experimental results indicated that at 5°C, the nitrification activity was about 60% of that at 18°C. The ...

May 14, 2009

By Inderscience Publishers

The expanded Bed Biofilm reactor (EBBR) – an innovative Biofilm approach for tertiary nitrification

ABSTRACT The expanded bed biofilm reactor (EBBR) was developed by Advanced Bioprocess Development Ltd. (ABD) to provide a compact tertiary nitrification process. In terms of performance, the EBBR can meet an NH3-N discharge of less than 1 mg/L at high volumetric loading rates (1.0 kg NH3-N/m3 expanded bed /day). This high rate results from a predominance of nitrifying bacteria immobilized as ...

Oct. 13, 2007

By Water Environment Federation (WEF)

Impact of fine mesh sieve primary treatment on nitrogen removal in moving bed biofilm reactors

The purpose of this project was to investigate the effect of selective particle removal during primary treatment on nitrogen removal in moving bed biofilm reactors (MBBRs). Two small MBBR pilot plants were operated in parallel, where one train treated 2 mm screened municipal wastewater and the other train treated wastewater that had passed through a Salsnes Filter SF1000 rotating belt sieve ...

Sep. 28, 2015

By IWA Publishing

Evaluation Of Moving Bed Biofilm Reactor Technology For Enhancing Nitrogen Removal In A Stabilization Pond Treatment Plant

The Sanitation Districts of Los Angeles County (Sanitation Districts) operate the Palmdale Water Reclamation Plant (WPR) to provide wastewater treatment and disposal services for a city of 140,000. The Palmdale WRP is a secondary treatment system that uses oxidation ponds for BOD stabilization. Partial removal of nitrogen occurs within the facility, primarily as a result of assimilation by algae ...

Jan. 1, 2005

Comparison between hybrid moving bed biofilm reactor and activated sludge system: a pilot plant experiment

The paper presents the comparison between the traditional activated sludge system (AS) and a hybrid moving bed biofilm reactor (HMBBR). In particular, an experimental campaign has been carried out at the WWTP in Palermo (Italy), on a pilot plant consisting of two pre-anoxic schemes. The aerated tank of the HMBBR line was filled with suspended carriers (AnoxKaldnes™ K1), with a 30% filling ratio. ...

Feb. 1, 2010

By IWA Publishing

Organic matter removal from saline agricultural drainage wastewater using a moving bed biofilm reactor

We investigated the effect of salinity on the removal of organics and ammonium from agricultural drainage wastewater (ADW) using moving bed biofilm reactors (MBBRs). Under the typical salinity level of ADW (total dissolved solids (TDS) concentration up to 2.5 g·L−1), microorganisms were acclimated for 40 days on plastic carriers and a stable slime layer of attached biofilm was formed. Next, ...

Jul. 7, 2015

By IWA Publishing

Cold Weather Nitrification of Lagood Effluent Using a Moving Bed Biofilm Reactor (MBBR) Treatment Process

ABSTRACTSince 2000, the population at Johnstown, Colorado has increased over 22%, and shows no signs of slowing down. Faced with more residents and impending year round ammonia limits, the Town of Johnstown was forced to upgrade their wastewater treatment facility. The existing treatment facility in Johnstown consisted of three lagoons, whose main purpose was to achieve settling of total ...

Oct. 22, 2006

By Water Environment Federation (WEF)

Optimization of operational parameters in moving bed biofilm reactor with low cost polystyrene biocarrier by the response surface method

The combined effects of three independent variables (carrier filling ratio, aeration rate and reactor run time (RRT)) were evaluated in a continuous moving bed biofilm reactor (MBBR) through central composite design (CCD) of the response surface methodology (RSM) for experimental design, analysis and process optimization for municipal wastewater treatment processes. A low-cost polystyrene ...

Jan. 13, 2017

By IWA Publishing

The impact of influent total ammonium nitrogen concentration on nitrite-oxidizing bacteria inhibition in moving bed biofilm reactor

The application of nitrification–denitrification over nitrite (nitritation–denitritation) with municipal (i.e. diluted and cold (or low-temperature)) wastewater can substantially improve the energy balance of municipal wastewater treatment plants. For the accumulation of nitrite, it is crucial to inhibit nitrite-oxidizing bacteria (NOB) with simultaneous proliferation of ...

Mar. 19, 2014

By IWA Publishing

Nitrogen and carbon removal efficiency of a polyvinyl alcohol gel based moving bed biofilm reactor system

In this study, the effectiveness of polyvinyl alcohol (PVA) gel beads in treating domestic wastewater was investigated: a moving bed biofilm reactor (MBBR) configuration (oxic-anoxic and oxic) with 10% filling fraction of biomass carriers was operated in a continuously fed regime at temperatures of 25, 20, 15 and 6 °C with hydraulic retention times (HRTs) of 32 h, 18 h, 12 h and 9 h, ...

Dec. 17, 2015

By IWA Publishing

Start-up of membrane bioreactor and hybrid moving bed biofilm reactor–membrane bioreactor: kinetic study

A hybrid moving bed biofilm reactor–membrane bioreactor (hybrid MBBR-MBR) system was studied as an alternative solution to conventional activated sludge processes and membrane bioreactors. This paper shows the results obtained from three laboratory-scale wastewater treatment plants working in parallel in the start-up and steady states. The first wastewater treatment plant was a MBR, the second ...

Aug. 8, 2015

By IWA Publishing

Reverse osmosis concentrate treatment by chemical oxidation and moving bed biofilm processes

In the present work, four oxidation techniques were investigated (O3, O3/UV, H2O2/O3, O3/H2O2/UV) to pre-treat reverse osmosis (RO) concentrate before treatment in a moving-bed biofilm reactor (MBBR) system. Without previous oxidation, the MBBR was able to remove a small fraction of the chemical oxygen demand (COD) ...

Dec. 13, 2013

By IWA Publishing

Treatment Of High Strength Chemical Industry Wastewater Using Moving Bed Biofilm Reactor (MBBR) and Powdered Activated Carbon (PAC) Technology

A new Waste Recycling Facility (WRF) was created at the Sasol coal to liquids facility in Secunda, South Africa with a wastewater treatment system that includes equipment to treat the wastewater and storm water through several steps including equalization, oil removal (gravity separation and dissolved air flotation), lime neutralization/metals precipitation, back-neutralization, fixed-film ...

Oct. 21, 2006

By Water Environment Federation (WEF)

N<sub>2</sub>O emissions from a one stage partial nitrification/anammox process in moving bed biofilm reactors

N₂O emissions from a one stage partial nitrification/anammox process in moving bed biofilm reactors

Nitrous oxide (N2O) emissions from wastewater treatment are getting increased attention because their global warming potential is around 300 times that of carbon dioxide. The aim of the study was to measure nitrous oxide emissions from one stage partial nitrification/anammox (Anaerobic Ammonium Oxidation) reactors, where nitrogen is removed in a biological way. The first part of the experimental ...

Jul. 4, 2013

By IWA Publishing

Validating the Colloid model to optimise the design and operation of both moving-bed biofilm reactor and integrated fixed-film activated sludge systems

The paper presents a systematic study of simulations, using a previously calibrated Colloid model, from which it was found that: (i) for pure moving-bed biofilm reactor (MBBR) processes with tertiary nitrification conditions (no influent chemical oxygen demand (COD)), dissolved oxygen = 5 mg/L and residual NH4-N > 4 mgN/L, a nitrification rate of 1.2 gN/(m2d) was obtained ...

Apr. 10, 2014

By IWA Publishing

Treatment of petroleum refinery wastewater using a sequential anaerobic–aerobic moving-bed biofilm reactor system based on suspended ceramsite

In this study, a novel suspended ceramsite was prepared, which has high strength, optimum density (close to water), and high porosity. The ceramsite was used to feed a moving-bed biofilm reactor (MBBR) system with an anaerobic–aerobic (A/O) arrangement to treat petroleum refinery wastewater for simultaneous removal of chemical oxygen demand (COD) and ammonium. The hydraulic retention time ...

May 9, 2013

By IWA Publishing

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