High-rate wastewater treatment combining a moving bed biofilm reactor and enhanced particle separation

2005 ◽  
Vol 52 (10-11) ◽  
pp. 117-127 ◽  
Author(s):  
H. Helness ◽  
E. Melin ◽  
Y. Ulgenes ◽  
P. Järvinen ◽  
V. Rasmussen ◽  
...  
Keyword(s):  
Organic Matter ◽  
Wastewater Treatment ◽  
Pilot Scale ◽  
Biofilm Reactor ◽  
High Rate ◽  
Treatment Concept ◽  
Moving Bed ◽  
Biofilm Reactors ◽  
Biofilm Process ◽  
Total Residence Time

Many cities around the world are looking for compact wastewater treatment alternatives since space for treatment plants is becoming scarce. In this paper development of a new compact, high-rate treatment concept with results from experiments in lab-scale and pilot-scale are presented. The idea behind the treatment concept is that coagulation/floc separation may be used to separate suspended and colloidal matter (resulting in >70% organic matter removal in normal wastewater) while a high-rate biofilm process (based on Moving Bed™ biofilm reactors) may be used for removing low molecular weight, easily biodegradable, soluble organic matter. By using flotation for floc/biomass separation, the total residence time for a plant according to this concept will normally be <1 hour. A cationic polymer combined with iron is used as coagulant at low dosages (i.e. 1–2mg polymer/l, 5–10mg Fe/l) resulting in low sludge production (compared to conventional chemical treatment) and sufficient P-removal.

Advanced compact wastewater treatment based on coagulation and moving bed biofilm processes

2000 ◽  
Vol 42 (12) ◽  
pp. 33-48 ◽  
Author(s):  
H. Ødegaard
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Biofilm Reactor ◽  
Phosphate Removal ◽  
High Rate ◽  
Moving Bed ◽  
Considerable Saving ◽  
Treatment Processes ◽  
Pre Treatment ◽  
Biofilm Process

Advanced compact wastewater treatment processes are being looked for by cities all over the world as effluent standards are becoming more stringent and land available for treatment plants more scarce. In this paper it is demonstrated that a very substantial portion of the pollutants in municipal wastewater appears as particulate and colloidal matter. Pre-coagulation, therefore, gives very efficient pre-treatment that results in considerable saving in the total space required by the plant, especially when combined with a biofilm process for the removal of the soluble matter. A new biofilm process for this purpose is described. The moving bed biofilm process is based on plastic carriers, that move in the reactor, on which biomass attach and grow. The carriers are kept withinthe reactor by a sieve arrangement and biomass that is sloughing off the carriers is separated before effluent discharge. In addition to combining the moving bed biofilm process with pre-coagulation, the paper discusses also the use of a high-rate moving bed process combined with coagulation directly after the biofilm reactor in order to enhance separability. This results in very compact treatment plants for secondary treatment and possibly phosphate removal.

Innovations in wastewater treatment: –the moving bed biofilm process

2006 ◽  
Vol 53 (9) ◽  
pp. 17-33 ◽  
Author(s):  
Hallvard Ødegaard
Keyword(s):  
Wastewater Treatment ◽  
Chemical Precipitation ◽  
Biofilm Reactor ◽  
High Rate ◽  
Secondary Treatment ◽  
Design Data ◽  
Moving Bed ◽  
N Removal ◽  
Practical Operation ◽  
Biofilm Process

This paper describes the moving bed biofilm reactor (MBBR) and presents applications of wastewater treatment processes in which this reactor is used. The MBBR processes have been extensively used for BOD/COD-removal, as well as for nitrification and denitrification in municipal and industrial wastewater treatment. This paper focuses on the municipal applications. The most frequent process combinations are presented and discussed. Basic design data obtained through research, as well as data from practical operation of various plants, are presented. It is demonstrated that the MBBR may be used in an extremely compact high-rate process (<1 h total HRT) for secondary treatment. Most European plants require P-removal and performance data from plants combining MBBR and chemical precipitation is presented. Likewise, data from plants in Italy and Switzerland that are implementing nitrification in addition to secondary treatment are presented. The results from three Norwegian plants that are using the so-called combined denitrification MBBR process are discussed. Nitrification rates as high as 1.2 g NH4-N/m2 d at complete nitrification were demonstrated in practical operation at low temperatures (11 °C), while denitrification rates were as high as 3.5 g NO3-Nequiv./m2.d. Depending on the extent of pretreatment, the total HRT of the MBBR for N-removal will be in the range of 3 to 5 h.

Small Wastewater Treatment Plants Based on Moving Bed Biofilm Reactors

1993 ◽  
Vol 28 (10) ◽  
pp. 351-359 ◽  
Author(s):  
H. Ødegaard ◽  
B. Rusten ◽  
H. Badin
Keyword(s):  
Wastewater Treatment ◽  
Pollution Control ◽  
Wastewater Treatment Plants ◽  
Treatment Plant ◽  
Biofilm Reactor ◽  
Chemical Plants ◽  
Moving Bed Biofilm Reactor ◽  
Moving Bed ◽  
Biofilm Reactors ◽  
Control Authority

In 1988 the State Pollution Control Authority in Norway made recommendations regarding process designs for small wastewater treatment plants. Amongst these were recommendations for biological/chemical plants where biofilm reactors were used in combination with pretreatment in large septic tanks and chemical post treatment. At the same time the socalled “moving bed biofilm reactor” (MBBR) was developed by a Norwegian company. In this paper, experiences from a small wastewater treatment plant, based on the MBBR and on the recommendations mentioned, will be presented.

Application of a combined process of moving-bed biofilm reactor (MBBR) and chemical coagulation for dyeing wastewater treatment

2006 ◽  
Vol 54 (9) ◽  
pp. 181-189 ◽  
Author(s):  
D.H. Shin ◽  
W.S. Shin ◽  
Y.-H. Kim ◽  
Myung Ho Han ◽  
S.J. Choi
Keyword(s):  
Wastewater Treatment ◽  
Textile Wastewater ◽  
Pilot Scale ◽  
Biofilm Reactor ◽  
Dyeing Wastewater ◽  
Moving Bed Biofilm Reactor ◽  
Combined Process ◽  
Chemical Coagulation ◽  
Moving Bed ◽  
Textile Wastewater Treatment

A combined process consisted of a Moving-Bed Biofilm Reactor (MBBR) and chemical coagulation was investigated for textile wastewater treatment. The pilot scale MBBR system is composed of three MBBRs (anaerobic, aerobic-1 and aerobic-2 in series), each reactor was filled with 20% (v/v) of polyurethane-activated carbon (PU-AC) carrier for biological treatment followed by chemical coagulation with FeCl2.In the MBBR process, 85% of COD and 70% of color (influent COD=807.5 mg/L and color=3,400 PtCo unit) were removed using relatively low MLSS concentration and short hydraulic retention time (HRT=44 hr). The biologically treated dyeing wastewater was subjected to chemical coagulation. After coagulation with FeCl2, 95% of COD and 97% of color were removed overall. The combined process of MBBR and chemical coagulation has promising potential for dyeing wastewater treatment.

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

2015 ◽  
Vol 72 (11) ◽  
pp. 1948-1953 ◽  
Author(s):  
J. C. Leyva-Díaz ◽  
J. M. Poyatos
Keyword(s):  
Organic Matter ◽  
Wastewater Treatment ◽  
Kinetic Study ◽  
Membrane Bioreactor ◽  
Biofilm Reactor ◽  
Moving Bed Biofilm Reactor ◽  
Moving Bed ◽  
Start Up ◽  
Activated Sludge Processes ◽  
Heterotrophic Biomass

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 one was a hybrid MBBR-MBR system containing carriers both in anoxic and aerobic zones of the bioreactor (hybrid MBBR-MBRa), and the last one was a hybrid MBBR-MBR system which contained carriers only in the aerobic zone (hybrid MBBR-MBRb). The reactors operated with a hydraulic retention time of 30.40 h. A kinetic study for characterizing heterotrophic biomass was carried out and organic matter and nutrients removals were evaluated. The heterotrophic biomass of the hybrid MBBR-MBRb showed the best kinetic performance in the steady state, with yield coefficient for heterotrophic biomass = 0.30246 mg volatile suspended solids per mg chemical oxygen demand, maximum specific growth rate for heterotrophic biomass = 0.00308 h−1 and half-saturation coefficient for organic matter = 3.54908 mg O2 L−1. The removal of organic matter was supported by the kinetic study of heterotrophic biomass.

Treatment of mountain refuge wastewater by fixed and moving bed biofilm systems

2004 ◽  
Vol 48 (11-12) ◽  
pp. 169-177 ◽  
Author(s):  
G. Andreottola ◽  
E. Damiani ◽  
P. Foladori ◽  
P. Nardelli ◽  
M. Ragazzi
Keyword(s):  
Wastewater Treatment ◽  
Fixed Bed ◽  
Treatment Plant ◽  
Biofilm Reactor ◽  
Moving Bed ◽  
Trickling Filters ◽  
Advantages And Disadvantages ◽  
Biofilm Reactors ◽  
Adequate Knowledge ◽  
Start Up

Tourists visiting mountain refuges in the Alps have increased significantly in the last decade and the number of refuges and huts at high altitude too. In this research the results of an intensive monitoring of a wastewater treatment plant (WWTP) for a tourist mountain refuge located at 2,981 m a.s.l. are described. Two biofilm reactors were adopted: (a) a Moving Bed Biofilm Reactor (MBBR); (b) a submerged Fixed Bed Biofilm Reactor (FBBR). The aims of this research were: (i) the evaluation of the main parameters characterising the processes and involved in the design of the wastewater plants, in order to compare advantages and disadvantages of the two tested alternatives; (ii) the acquisition of an adequate knowledge of the problems connected with the wastewater treatment in alpine refuges. The main results have been: (i) a quick start-up of the biological reactors obtainable thanks to a pre-colonization before the transportation of the plastic carriers to the refuge at the beginning of the tourist season; (ii) low volume and area requirement; (iii) significantly higher removal efficiency compared to other fixed biomass systems, such as trickling filters, but the energy consumption is higher.

Treatment of Thermomechanical Pulping (TMP) Whitewater in Thermophilic (55°C) Anaerobic-Aerobic Moving Bed Biofilm Reactors

1999 ◽  
Vol 40 (8) ◽  
pp. 81-89 ◽  
Author(s):  
Sigrun J. Jahren ◽  
Hallvard Ødegaard
Keyword(s):  
Biofilm Reactor ◽  
Total Biomass ◽  
Moving Bed ◽  
Anaerobic Reactor ◽  
Loading Rates ◽  
Biofilm Reactors ◽  
Thermomechanical Pulping ◽  
Aerobic Reactor ◽  
Gas Circulation ◽  
Biofilm Process

Thermomechanical pulping whitewater was treated in an anaerobic followed by an aerobic Kaldnes moving bed biofilm reactor at 55°C. The anaerobic reactor was mixed by gas circulation and the aerobic reactor was mixed by aeration. The anaerobic reactor was started with mesophilic inoculum, while the aerobic reactor was started without inoculation. The reactors were operated on molasses water for one and a half years before the experiment was started. Total biomass concentrations (suspended and attached) were 3.3 g VSS/L in the anaerobic reactor and 1.6 g VSS/L in the aerobic reactor when starting feeding the reactors with TMP whitewater. After 7 months of operation the biomass concentrations had reached 5.5 and 6.5 g VSS/L in the anaerobic and aerobic reactors, respectively. The CODsol removals in the anaerobic reactor were around 30 % at loading rates up to 7 kg CODsol/m3d, and over-all CODsol removals of about 60 % were achieved. The results show that the anaerobic-aerobic moving bed biofilm process could be feasible for the thermophilic treatment of thermomechanical pulping whitewater.

Biological pretreatment of a chemical plant wastewater in high-rate moving bed biofilm reactors

1999 ◽  
Vol 39 (10-11) ◽  
pp. 257-264 ◽  
Author(s):  
Bjørn Rusten ◽  
Chandler H. Johnson ◽  
Steve Devall ◽  
Dennis Davoren ◽  
Bryan S. Cashion
Keyword(s):  
Activated Sludge ◽  
Chemical Industry ◽  
Average Concentration ◽  
Biofilm Reactor ◽  
High Rate ◽  
Biological Pretreatment ◽  
Moving Bed ◽  
Biofilm Reactors ◽  
Process Combination ◽  
Final Effluent

The Moving Bed Biofilm Reactor (MBBR), where the biomass is attached to small plastic carrier elements that move freely along with the water in the reactors, has been tested for biological pretreatment of a complex chemical industry wastewater. The MBBRs were tested at organic loads up to 53 g BOD5/m2d and always removed the easily biodegradable BOD fraction, ranging from about 60 to 80%. At organic loads from 10 to 20 g BOD5/m2d slowly biodegradable organic matter was also metabolized, sometimes removing more than 95% BOD5. After polishing in an activated sludge unit, the final effluent had an average concentration of only 3.4 mg filtered BOD5/l. With a very high specific biofilm surface area, MBBRs followed by activated sludge offer a compact process combination for complete biological treatment of chemical industry wastewaters.

Sign in / Sign up

Export Citation Format

Share Document