Char quality response surfaces from torrefaction of coppiced willow in a horizontal moving bed pilot plant

2018 ◽  
Vol 97 (1) ◽  
pp. 84-92 ◽  
Author(s):  
William A. Campbell ◽  
Kurt Woytiuk ◽  
Regan Gerspacher ◽  
Amy Coller ◽  
Richard W. Evitts
Keyword(s):  
Pilot Plant ◽  
Response Surfaces ◽  
Moving Bed ◽  
Quality Response ◽  
Horizontal Moving

Treatment of Dairy Wastewater in a Novel Moving Bed Biofilm Reactor

1992 ◽  
Vol 26 (3-4) ◽  
pp. 703-711 ◽  
Author(s):  
B. Rusten ◽  
H. Ødegaard ◽  
A. Lundar
Keyword(s):  
Surface Area ◽  
Pilot Plant ◽  
Industrial Effluents ◽  
Biofilm Reactor ◽  
Dairy Wastewater ◽  
Test Results ◽  
Moving Bed Biofilm Reactor ◽  
Moving Bed ◽  
Biofilm Reactors ◽  
In Series

A novel moving bed biofilm reactor has been developed, where the biofilm grows on small, free floating plastic elements with a large surface area and a density slightly less than 1.0 g/cm3. The specific biofilm surface area can be regulated as required, up to a maximum of approximately 400 m2/m3. The ability to remove organic matter from concentrated industrial effluents was tested in an aerobic pilot-plant with two moving bed biofilm reactors in series and a specific biofilm surface area of 276 m2/m3. Treating dairy wastewater, the pilot-plant showed 85% and 60% COD removal at volumetric organic loading rates of 500 g COD/m3h and 900 g COD/m3h respectively. Based on the test results, the moving bed biofilm reactors should be very suitable for treatment of food industry effluents.

A pilot-plant study of a moving-bed biofilm reactor system using PVA gel as a biocarrier for removals of organic carbon and nitrogen

2007 ◽  
Vol 55 (8-9) ◽  
pp. 135-141 ◽  
Author(s):  
J.D. Rouse ◽  
O. Burica ◽  
M. Stražar ◽  
M. Levstek
Keyword(s):  
Organic Contaminants ◽  
Pilot Plant ◽  
Biofilm Reactor ◽  
Maximum Efficiency ◽  
Nitrification Rate ◽  
Moving Bed Biofilm Reactor ◽  
Moving Bed ◽  
Carbon And Nitrogen ◽  
Pva Gel ◽  
Pilot Plant Study

A pilot-plant study was conducted to evaluate the performance of a moving-bed biofilm reactor process using PVA-gel beads as a biocarrier. Real primary-settled wastewater was fed to the pre-denitrification system and removals of nitrogenous and organic contaminants were evaluated over a 1-year period. The results demonstrated that at a total nitrogen (TN) loading of 18 mg/L.h, a TN removal efficiency in keeping with and even exceeding the theoretical maximum efficiency based on the level of internal recycle, was possible and a nitrification rate of 15 mg/L.h was sustained with a HRT of only 2.5 h at 15 °C. Furthermore, soluble COD and BOD5 in the effluent of the pilot plant were reduced to levels well below most regulatory discharge limits. In addition, the possibility of using this biocarrier in a system, including the elimination of waste organic sludge, was discussed.

Modelling and dynamic simulation of hybrid moving bed biofilm reactors: Model concepts and application to a pilot plant

2011 ◽  
Vol 56 (1-2) ◽  
pp. 23-36 ◽  
Author(s):  
Giorgio Mannina ◽  
Daniele Di Trapani ◽  
Gaspare Viviani ◽  
Hallvard Ødegaard
Keyword(s):  
Dynamic Simulation ◽  
Pilot Plant ◽  
Moving Bed ◽  
Biofilm Reactors

Performance of a Six-Port Simulated Moving-Bed Pilot Plant for Vapor-Phase Adsorption Separations

1992 ◽  
Vol 27 (14) ◽  
pp. 1889-1916 ◽  
Author(s):  
Giuseppe Storti ◽  
Marco Mazzotti ◽  
Luís Tadeu Furlan ◽  
Massimo Morbidelli ◽  
Sergio Carrà
Keyword(s):  
Vapor Phase ◽  
Pilot Plant ◽  
Simulated Moving Bed ◽  
Moving Bed

Pilot Plant Experience with an Aerobic Moving Bed Biofilm Reactor for Treatment of NSSC Wastewater

1994 ◽  
Vol 29 (5-6) ◽  
pp. 283-294 ◽  
Author(s):  
A. Broch-Due ◽  
R. Andersen ◽  
O. Kristoffersen
Keyword(s):  
Removal Efficiency ◽  
Pilot Plant ◽  
Settling Tank ◽  
Paper Mill ◽  
Biofilm Reactor ◽  
Cod Removal ◽  
Organic Load ◽  
Efficient Operation ◽  
Moving Bed ◽  
In Series

Norske Skogindustrier A.S operates Sande Paper Mill A/S, a neutral sulphite semi-chemical (NSSC) corrugating mill. The mill currently discharges 1500 m3/day of wastewater containing 36 tonnes of COD and 15 tonnes of BOD7. A pilot plant test programme to demonstrate the application of a moving bed biofilm process was initiated in 1991. The objective of the pilot plant study was to obtain high COD removal efficiency at high organic loads, i.e. 25 kg COD/m3·day. If this was possible, two unused oil tanks ( 2 × 1000 m3) at the mill could provide sufficient reactor volume for biological treatment of the mill wastewater. The process tested was the KMT Moving Bed Process. This process was developed quite recently and had not been tested for the treatment of pulp and paper wastewater. The process is based on using floating biofilm carrier elements with a large inside surface area. The pilot plant at Sande Paper Mill included two reactors in series and a settling tank. Each reactor had a volume of 0.523 m3 and both were filled with elements to about 70%. The pilot plant was operated continuously for seven months. The organic load was increased in increments from about 10 kg COD/m3·d to about 65 kg COD/m3·d on the first reactor. Results show that it is possible to achieve high removal efficiency at high organic loads. At an organic load of about 25 kg COD/m3·d on the plant (i.e. 50 kg COD/m3·d on the first reactor), COD and BOD7 reductions through the pilot plant were 70% and 96% respectively. Toxicity removal was about 98% (Microtox). Sludge production was 0.2 kg TS per kg COD removed or 0.35 kg TS/kg BOD removed. The main part of the soluble COD removal took place in the first reactor where oxygen consumption was about 3 times higher than in the second reactor. Organic load of about 60 kg COD/m3·d on the first reactor is the upper limit for efficient operation of the KMT process when treating the NSSC wastewater. No clogging was observed during the test period and the process seems to be both stable and robust.

Pilot testing and preliminary design of moving bed biofilm reactors for nitrogen removal at the FREVAR wastewater treatment plant

2000 ◽  
Vol 41 (4-5) ◽  
pp. 13-20 ◽  
Author(s):  
B. Rusten ◽  
B.G. Hellström ◽  
F. Hellström ◽  
O. Sehested ◽  
E. Skjelfoss ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Nitrogen Removal ◽  
Wastewater Treatment Plant ◽  
Pilot Plant ◽  
Municipal Wastewater ◽  
Treatment Plant ◽  
Biofilm Reactor ◽  
Nitrification Rate ◽  
Total N ◽  
Moving Bed

A moving bed biofilm reactor (MBBR) pilot plant, using Kaldnes type K1 biofilm carriers, was tested for nitrogen removal at the FREVAR wastewater treatment plant. The pilot plant was fed primary treated municipal wastewater, at temperatures from 4.8 to about 20°C. The results showed that a reasonable design nitrification rate will be 190 g TKN/m3d, at 10°C and a reactor pH≥7.0. Pre-denitrification was very dependent on the concentration of readily biodegradable organic matter and the amount of oxygen in the influent to the first anoxic MBBR. It was found that a MBBR process for nitrogen removal at FREVAR will require a total reactor volume corresponding to an empty bed hydraulic retention time of 4–5 hours at average design influent flow. This was based on an influent concentration of 25 mg total N/l, 70% annual average removal of total N and a treatment process consisting of primary treatment, MBBRs with combined pre- and post-denitrification, and followed by coagulation/flocculation and a final solids separation stage.

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

2010 ◽  
Vol 61 (4) ◽  
pp. 891-902 ◽  
Author(s):  
Daniele Di Trapani ◽  
Giorgio Mannina ◽  
Michele Torregrossa ◽  
Gaspare Viviani
Keyword(s):  
Activated Sludge ◽  
Pilot Plant ◽  
Wastewater Treatment Plants ◽  
Biofilm Reactor ◽  
Additional Contribution ◽  
Moving Bed Biofilm Reactor ◽  
Moving Bed ◽  
Activated Sludge System ◽  
Hydraulic Load ◽  
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. The hydraulic load of the HMBBR line was increased up to two times the AS one. Further, in order to distinguish the additional contribution of the attached biomass for the HMBBR system, in the two lines the Mixed Liquor Suspended Solids (MLSS) was maintained as equal as possible. The monitoring period lasted three months during which several parameters were monitored. The obtained results showed a good treatment ability of the HMBBR system, referring to the organic matter removal as well as to the ammonium removal. In particular, in spite of the increase of the hydraulic load for the HMBBR line, the two systems showed a similar performance in terms of both organic and nitrogen removal. The results demonstrate the higher treatment capacity of the HMBBR addressing such system as an effective technology for the upgrading of overloaded wastewater treatment plants.

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