Winery effluent treatment at an anaerobic hybrid USBF pilot plant under normal and abnormal operation

2007 ◽  
Vol 56 (2) ◽  
pp. 25-31 ◽  
Author(s):  
F. Molina ◽  
G. Ruiz-Filippi ◽  
C. García ◽  
E. Roca ◽  
J.M. Lema
Keyword(s):  
Pilot Plant ◽  
Treatment Plant ◽  
Effluent Treatment ◽  
Normal Operation ◽  
Anaerobic Sludge ◽  
Organic Carbon Concentration ◽  
Start Up ◽  
On Line ◽  
Liquid Phase Composition ◽  
Abnormal Operation

A 1.1 m3 hybrid USBF fully instrumented pilot plant has been used for the treatment of diluted wine for four years. In this work, the performance of the wastewater treatment plant (WWTP) during start up and operation (normal operation and overload experiments) is shown. A complete description of the treatment process behaviour (gas and liquid phase composition and anaerobic sludge characteristics) is given by on-line and off-line monitoring of 28 process variables. The results presented here demonstrate the reliability of this technology for the treatment of wastewater from seasonal processes, such as winery wastewaters, during a long period of time (four years). Furthermore, the USBF reactor presented very short start up periods after short and long shut down of the WWTP and rapidly turned back to normal operation after suffering a complete destabilization due to organic overload. Both effluent and biogas were of good quality. Dissolved organic carbon concentration in the effluent was always lower than 100 mg DOC l−1 under normal operation, while methane concentration in the biogas was in the range 70–74%, making it suitable for energy recovering.

scholarly journals Quality Assessment of Full-Scale Municipal Wastewater Treatment Plant Consisting UASB Reactors and Polishing Ponds During its Start-Up Phase in India

2016 ◽  
Vol 11 (1) ◽  
pp. 47-55
Author(s):  
Nadeem Khalil ◽  
Tarique Ahmad
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Quality Assessment ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Municipal Sewage ◽  
Anaerobic Sludge ◽  
General Hypothesis ◽  
Start Up ◽  
Uasb Reactors

Amongst the technologies available, the up flow anaerobic sludge blanket (UASB) process has been one of the most widely applied methods for municipal waste water treatment especially in countries of warm climatic conditions like India. However, past about one decade has witnessed rapid decline in the UASB popularity and its implementation. There has been criticism from various sections on the performance of UASB reactors for not complying with the prescribed discharge standards. It is a general hypothesis that the UASB reactors are not meant for diluted waste water like municipal sewage when typically the BOD is less than 150 mg/l, COD 250 mg/l and sulphates are more than 150mg/l. An attempt has been made through this study to investigate the reasons on the basis of quality assessment and field observations on UASB reactors and it’s post-treatment of a newly commissioned (start-up) municipal (sewage) wastewater treatment plant commonly called ‘STP’ having capacity of 14 million litres per day (MLD). Study was aimed to know the gaps during the commissioning stage which could be related to poor removal efficiencies. This paper briefly discusses some issues related to operation and maintenance of the UASB plants with purpose for improvements.

Improving the start-up of an EBPR system using OUR to control the aerobic phase length: a simulation study

2006 ◽  
Vol 53 (4-5) ◽  
pp. 253-262 ◽  
Author(s):  
A. Guisasola ◽  
M. Pijuan ◽  
J.A. Baeza ◽  
J. Carrera ◽  
J. Lafuente
Keyword(s):  
Simulation Study ◽  
Batch Reactor ◽  
Treatment Plant ◽  
Biological Phosphorus Removal ◽  
Measured Variable ◽  
Technical Limitation ◽  
Start Up ◽  
On Line ◽  
Polyphosphate Accumulating Organisms ◽  
Phase Length

The enhanced biological phosphorus removal (EBPR) process is based on enriching the sludge with polyphosphate accumulating organisms (PAO) which are scarce in conventional non-EBPR wastewater treatment plant sludge. Hence, the start-up of EBPR systems (i.e. enriching the sludge with PAO) can be very slow and complex. A simulation study of a possible improvement of the start-up of an EBPR system in a sequencing batch reactor is presented in this work. The improvement is based on reducing the length of the aerobic phase so that it coincides with the depletion of orthophosphate from the medium. This improvement, though verified by simulation to be very successful, requires a good on-line orthophosphate sensor. To avoid this technical limitation, a link between oxygen uptake rate (OUR) measurements and orthophosphate presence is proposed. This link allows the control of the aerobic phase length with OUR as a measured variable and, consequently, a considerable improvement with respect to the conventional fixed aerobic phase length operation. An improvement of 95% in the ratio of PAO to heterotrophs and an increase of 30% in the final amount of PAO in sludge is achieved with this control strategy. The kinetic mod for simulations was a modification of the Activated Sludge Model 2d.

Torreele's water re-use facility enabled sustainable groundwater management in de Flemish dunes (Belgium)

2008 ◽  
Vol 3 (2) ◽  
Author(s):  
Emmanuel Van Houtte ◽  
ir. Johan Verbauwhede
Keyword(s):  
Groundwater Recharge ◽  
Groundwater Management ◽  
Treatment Plant ◽  
Effluent Treatment ◽  
Reliable Technique ◽  
Groundwater Levels ◽  
Public Response ◽  
The Public ◽  
Sustainable Groundwater Management ◽  
Start Up

In 2002 IWVA started reusing secondary wastewater effluent for groundwater recharge of the existing dune water catchment ‘St-André’. This integration enabled sustainable groundwater management as the natural groundwater extraction was reduced. Consequently groundwater levels increased and on the long term, risk of seawater intrusion no longer is a point of concern. The public response towards this project is generally positive. The Torreele plant, where the infiltration water is produced, is built besides the wastewater treatment plant of Wulpen, which is managed by Aquafin. The treatment at Torreele combines ultrafiltration (UF), using the submerged ZeeWeed system, and reverse osmosis (RO), using brackish water low energy membranes. UF has proved to be a reliable technique for effluent treatment and a good pretreatment before RO. The UF system proved sustainable thanks to the use of air and the combination of filtrate backwashes with periodic extended backwashes adding hypochlorite. The maintenance cleaning of the membranes could be limited to once every month. Despite the use of UF filtrate as source for the RO treatment an additional bio-fouling prevention scheme is in place. By dosing hypochlorite and ammonium-chloride to the UF filtrate, monochloramines are formed. This proved effective in controlling bio-fouling : after 4 and a half years of operation the same membranes are still in place. Scaling of the RO membranes is prevented by combining pH adjustment and dosing of scale inhibitor. Chemical cleanings of the RO membranes are performed on average 5 times every year. This is done alternating alkaline and acid cleanings or alkaline and biocide cleanings. Up to now the normalized fluxes still recover to around the initial values after cleaning. Since the start-up of the Torreele plant, many optimizations have been performed, resulting in lower energy and chemical consumption. The RO filtrate produced in Torreele is pumped to the dunes of St-André. Just a small pH correction is performed. The groundwater recharge has proved to be effective : the groundwater level in the dunes increased enhancing not only the quality of this groundwater but also the natural values. The hardness of the drinking-water substantially decreased resulting in a higher comfort for the customer.

Running-in of the nitrification process with and without inoculation of adapted sludge

1996 ◽  
Vol 34 (1-2) ◽  
pp. 261-268
Author(s):  
O. Sinkjær ◽  
C. Thirsing ◽  
P. Harremoës ◽  
K. F. Jensen
Keyword(s):  
Pilot Plant ◽  
Treatment Plant ◽  
Long Term Effects ◽  
Significant Extent ◽  
Short Term ◽  
Start Up ◽  
Reference Plant ◽  
Nitrification Process ◽  
Removal Processes

Comprehensive pilot plant studies have been conducted over a period of six years in connection with the upgrading of the Lynetten Wastewater Treatment Plant to nutrient removal. The studies showed already at an early state that the nitrification process was inhibited. Short-term and long-term effects in connection with the running-in of the nitrogen removal processes, were investigated in two situations,- with and without inoculation with adapted sludge from a reference pilot plant. The floc formation, sludge accumulation and the establishment of full nitrification and denitrification developed in the same way in the two tests. The development of the nitrification capacity, however, differed to a significant extent. Compared with the nitrification capacity at the reference plant, the nitrification capacity in the test involving inoculation was reached approximately 2 month after the start-up as opposed to 7.5 months in the test without inoculation.

An on-line optimisation of a SBR cycle for carbon and nitrogen removal based on on-line pH and OUR: the role of dissolved oxygen control

2006 ◽  
Vol 53 (4-5) ◽  
pp. 171-178 ◽  
Author(s):  
S. Puig ◽  
Ll. Corominas ◽  
A. Traore ◽  
J. Colomer ◽  
M.D. Balaguer ◽  
...  
Keyword(s):  
Dissolved Oxygen ◽  
Nitrogen Removal ◽  
Pilot Plant ◽  
Batch Reactor ◽  
Treatment Plant ◽  
Ammonia Removal ◽  
Ph Profile ◽  
Carbon And Nitrogen ◽  
Dissolved Oxygen Control ◽  
On Line

A pilot plant sequencing batch reactor (SBR) was applied in a wastewater treatment plant treating urban wastewater focused on carbon and nitrogen removal. From an initial predefined step-feed cycle definition, the evolution of the on-line monitored pH and calculated oxygen uptake rate (OUR) were analysed in terms of knowledge extraction. First, the aerobic phases of the SBR cycle were operated using an On/Off dissolved oxygen (DO) control strategy that concluded with a sinusoidal pH profile that made detecting the “ammonia valley” difficult. After changing to fuzzy logic control of the dissolved oxygen and by adding an air flow meter to the pilot plant, the pH evolution and on-line calculated OUR showed a clearer trend during the aerobic phases. Finally, a proposed algorithm for adjusting the aerobic phases of the SBR for carbon and ammonia removal is presented and discussed.

scholarly journals Start-up of a UASB effluent treatment plant on distillery wastewater

Water SA ◽  
2004 ◽  
Vol 28 (1) ◽  
pp. 63 ◽  
Author(s):  
Bileen Wolmarans ◽  
Gideon H. De Villiers
Keyword(s):  
Treatment Plant ◽  
Effluent Treatment ◽  
Start Up ◽  
Effluent Treatment Plant ◽  
Distillery Wastewater

Removal of fecal indicator organisms and parasites (fecal coliforms and helminth eggs) from municipal biologic sludge by anaerobic mesophilic and thermophilic digestion

2001 ◽  
Vol 44 (4) ◽  
pp. 97-101 ◽  
Author(s):  
M. Rojas Oropeza ◽  
N. Cabirol ◽  
S. Ortega ◽  
L. P. Castro Ortiz ◽  
A. Noyola
Keyword(s):  
Treatment Plant ◽  
Anaerobic Treatment ◽  
Fecal Coliforms ◽  
Anaerobic Sludge ◽  
Indicator Organisms ◽  
Fecal Indicator ◽  
Class A ◽  
Helminth Eggs ◽  
Start Up ◽  
Thermophilic Digestion

In this work, two egg-shaped, 5L-volume, anaerobic sludge digesters were used, one under mesophilic conditions (35°C, M1), and the other under thermophilic conditions (55°C, T1). Both digesters were fed with the purged sludge from an anaerobic treatment plant (start-up period) and from an activated sludge plant (stabilization period), treating municipal wastewaters. The purpose of the study was to establish the technical feasibility of the anaerobic thermophilic sludge treatment comparatively, during the stages of start-up and stabilization of the process, for removing pathogenic microorganisms and parasites efficiently. The results show that, in both stages, the anaerobic thermophilic digester presents higher efficiency on the removal of pathogens and parasites, than the mesophilic digester. Anaerobic thermophilic digestion is close to complying with the EPA (1996) limits for “Class A” type biosolids, referring to the number of parasitic helminth eggs (0.25 HELarval/gTS), and to the pathogen indicator fecal coliforms (<1000 MPN/gTS). Therefore, the results show that thermophilic anaerobic digestion of biologic sludge may be considered as a suitable technology for the production of Class A biosolids, for further use in agriculture without restrictions.

Improved wet weather wastewater influent modelling at Viikinmäki WWTP by on-line weather radar information

2013 ◽  
Vol 68 (3) ◽  
pp. 499-505 ◽  
Author(s):  
M. Heinonen ◽  
M. Jokelainen ◽  
T. Fred ◽  
J. Koistinen ◽  
H. Hohti
Keyword(s):  
Municipal Wastewater ◽  
Treatment Plant ◽  
Liquid Waste ◽  
Weather Radar ◽  
Normal Operation ◽  
Municipal Wastewater Treatment ◽  
Finnish Meteorological Institute ◽  
Hourly Rainfall ◽  
On Line ◽  
Wet Weather

Municipal wastewater treatment plant (WWTP) influent is typically dependent on diurnal variation of urban production of liquid waste, infiltration of stormwater runoff and groundwater infiltration. During wet weather conditions the infiltration phenomenon typically increases the risk of overflows in the sewer system as well as the risk of having to bypass the WWTP. Combined sewer infrastructure multiplies the role of rainwater runoff in the total influent. Due to climate change, rain intensity and magnitude is tending to rise as well, which can already be observed in the normal operation of WWTPs. Bypass control can be improved if the WWTP is prepared for the increase of influent, especially if there is some storage capacity prior to the treatment plant. One option for this bypass control is utilisation of on-line weather-radar-based forecast data of rainfall as an input for the on-line influent model. This paper reports the Viikinmäki WWTP wet weather influent modelling project results where gridded exceedance probabilities of hourly rainfall accumulations for the next 3 h from the Finnish Meteorological Institute are utilised as on-line input data for the influent model.

scholarly journals Performance of a UASB Effluent Treatment Plant Treating Malt Ingredient Manufacturing Wastewater

2017 ◽  
Vol 6 (2) ◽  
pp. 198 ◽  
Author(s):  
Ryland Cairns ◽  
Paul Mead
Keyword(s):  
Treatment Plant ◽  
High Strength ◽  
Cost Effective ◽  
Full Scale ◽  
Effluent Treatment ◽  
Operational Performance ◽  
Organic Loading Rate ◽  
Anaerobic Sludge ◽  
Effluent Treatment Plant ◽  
Wide Range

Anaerobic Digestion has gained popularity in recent years due to its significant contribution towards achieving waste management and renewable energy targets. One particular technology that has been widely used in the treatment of high strength organic wastewaters across a wide range of industries is upflow anaerobic sludge blankets (UASBs). A malt ingredients manufacturing factory has successfully applied this technology as a cost effective way to treat their high strength effluent, however unlike other industries there is a lack of research regarding the wastewater characterisation or UASB performance at either lab or full scale. This paper aims to address this gap in knowledge and provide information on both the wastewater composition and on the ability of a full-scale mesophilic UASB to treat it over a period of 638 days. Analysis of the wastewater revealed that the manufacture of malt ingredients produces a high strength effluent, which fits within the realms of previously documented wastewaters despite not sharing a similar characterisation profile. Mesophilic UASB has been show to be an effective and robust technology option for the treatment of this type of wastewater displaying steady operational performance even when conditions were in excess of the design limit. Due to the robust operational performance of the plant the main factor limiting total methane production was shown to be the organic loading rate. 

Nitrogen removal from sludge water with SBR process: start-up of a full-scale plant in the municipal wastewater treatment plant at Ingolstadt, Germany

2004 ◽  
Vol 50 (10) ◽  
pp. 51-58 ◽  
Author(s):  
M.J. Vallés-Morales ◽  
J.A. Mendoza-Roca ◽  
A. Bes-Pií ◽  
A. Iborra-Clar
Keyword(s):  
Municipal Wastewater ◽  
Batch Reactor ◽  
Nitrogen Concentration ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Full Scale ◽  
Waste Water Treatment Plant ◽  
Ammonium Concentration ◽  
Anaerobic Sludge ◽  
Start Up

The sludge water obtained from the dewatering processes following anaerobic sludge digestion contains high levels of ammonia. This sludge water is generally returned to the beginning of the waste water treatment plant process, thereby significantly increasing the nitrogen load on the biological process. In this project, the start-up of a full-scale sequencing batch reactor (SBR) process to separately treat the aforementioned sludge water is studied. Two parallel SBRs were operated over 8 hour cycles. The duration of the start-up was approximately 100 days until a hydraulic load of 225 m3/d was reached for each SBR. This paper presents the results of the start-up, highlighting the change in nitrogen concentration with time and the effect of other parameters such as temperature and suspended solids in that period. Following the project period of operation, the ammonium concentration was reduced by more than 95% on average.

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