Performance of a full-scale ceramic MBR system to treat domestic sewage

Abstract Application of membrane technology for water reclamation has grown significantly in recent years due to reduced footprint size and more consistent product water quality. For a membrane bioreactor (MBR) system, it is critical for it to be robust to allow membrane systems to operate at higher flux without significant increase of trans-membrane pressure (TMP). A full-scale ceramic MBR system was installed at Changi Water Reclamation Plant (CWRP) as part of an MBR retrofit project to increase treatment capacity without expanding the plant's footprint. The nominal capacity of the ceramic MBR system is 15,000 m3/d. The system has been successfully operating since January 2017 with a net flux of 30–60 L/m2-hr (LMH). Stable operation was observed at nominal production capacity for more than 3 months. During that period, the TMP was stable in the range of 9–14 kPa for Tank A and 10–17 kPa for Tank B. Permeate turbidity was recorded in the range of 0.04–0.06 NTU for both Tank A and Tank B.

Download Full-text

Experiment of Polyester Wastewater Treatment by Aerobic Membrane Bioreactor and an Engineering Application

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.518-523.2130 ◽

2012 ◽

Vol 518-523 ◽

pp. 2130-2137

Author(s):

Si Hao Lv ◽

Hui Chang ◽

Zhi Hui Liang ◽

Yan Yan Zeng ◽

Hong Bo Fan

Keyword(s):

Water Quality ◽

Pilot Study ◽

Membrane Bioreactor ◽

Suspended Solids ◽

Loading Rate ◽

Engineering Application ◽

Full Scale ◽

Effluent Water ◽

Small Influence ◽

Volumetric Loading

A pilot study was carried out to evaluate the application of aerobic submerged MBR in treating polyester wastewater and a full scale system in which MBR was adopted as the key aspect was put forward to treat the polyester wastewater of Zhuhai Yuhua Polyester co., Ltd., China. The pilot study revealed that HRT could be affected by the influent COD, and a HRT larger than 36h was proposed for treating polyester wastewater by MBR. Volumetric loading rate and sludge loading rate ranged in 0.7-2.0 kgCOD/m3•d and 0.09~0.24 kgCOD/ kgMLSS•d respectively were of small influence on the COD removal. DO in the range of 2.5-4.0 mg/L seemed to be optimal for avoiding limitations due to oxygen concentration and creating an effective turbulence. The modified full scale system which includes anaerobic digesting tank and MBR followed by a stabilization pond was verified to be effective to treat the polyester wastewater in the latest two years. The results illustrated that the effluent water quality could meet the discharge limits of water pollutants (DB 44/26-2001) which was established in Guangdong, China. Observed sludge yield of the system fluctuated between 0.10-0.18 gMLSS/gCOD and averaged at 0.137 gMLSS/gCOD. The membrane permeate at around 10 L/m2h, TMP of less than 0.7bar, and total mixed liquor suspended solids (MLSS) between 6-7g/L were suitable to operate the MBR.

Download Full-text

Experimental Research on Schoolyard Domestic Sewage by MBR

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.971-973.2088 ◽

2014 ◽

Vol 971-973 ◽

pp. 2088-2091

Author(s):

Yan Xia Liu

Keyword(s):

Water Quality ◽

Experimental Research ◽

Water Consumption ◽

Membrane Bioreactor ◽

Quality Standard ◽

Domestic Sewage ◽

Water Quality Standard ◽

Submerged Membrane Bioreactor ◽

The Impact

The submerged membrane bioreactor (MBR) was used to treat schoolyard domestic sewage. The impact of DO、pH and HRT to the removal effect of COD and NH3-N were studied. The results show that when DO=2.5 mg/L, pH=6.5~8.0, HRT=8 h, the removal effect of COD and NH3-N is above 96% and 88%, which can meet the China Water Quality Standard for Urban Miscellaneous Water Consumption (GB/T 18920-2002).

Download Full-text

Full-scale experience with the membrane bioreactor-reverse osmosis water reclamation process

Journal of Water Reuse and Desalination ◽

10.2166/wrd.2015.178 ◽

2015 ◽

Vol 6 (2) ◽

pp. 235-248 ◽

Cited By ~ 1

Author(s):

Glen T. Daigger ◽

Andrew Hodgkinson ◽

Peter Skeels ◽

Jenine Smith ◽

James Lozier ◽

...

Keyword(s):

Reverse Osmosis ◽

Membrane Bioreactor ◽

Municipal Wastewater ◽

Domestic Wastewater ◽

Full Scale ◽

Plant Performance ◽

Water Reclamation ◽

Eastern Australia ◽

Plant Optimization ◽

And Performance

The Gippsland Water Factory (GWF), owned and operated by Gippsland Water in south eastern Australia, is a 35,000 m3/day water reclamation facility which treats 16,000 m3/day of domestic wastewater and 19,000 m3/day of industrial (pulp and paper) wastewater through parallel membrane-bioreactor (MBR)-based treatment trains prior to discharge to the Pacific Ocean via the Regional Outfall Sewer. A portion of the domestic train MBR effluent is further treated through a chloramination and reverse osmosis (RO) system for reclamation, as needed to augment the regional water supply, and is supplied to Australia Paper, the source of the industrial wastewater treated at the GWF. While use of the MBR/RO combination for water reclamation is expected to provide advantages, little full-scale experience exists. Consequently, this paper reports operational and performance results for the first four years of operation for the MBR/RO water reclamation train. Details are provided, not only on process performance, but also on the resolution of equipment and plant performance issues along with ongoing plant optimization. On the basis of these operating results, it is concluded that the combination of MBR and RO is a reliable and robust option for producing high-quality reclaimed water from municipal wastewater.

Download Full-text

Energy consumption in a baffled membrane bioreactor (B-MBR): estimation based on long-term continuous operation

Water Science & Technology ◽

10.2166/wst.2019.335 ◽

2019 ◽

Vol 80 (6) ◽

pp. 1011-1021 ◽

Cited By ~ 1

Author(s):

T. Miyoshi ◽

T. P. Nguyen ◽

T. Tsumuraya ◽

K. Kimura ◽

Y. Watanabe

Keyword(s):

Energy Consumption ◽

Membrane Fouling ◽

Membrane Bioreactor ◽

Specific Energy Consumption ◽

Oxygen Demand ◽

Full Scale ◽

Continuous Operation ◽

Operating Conditions ◽

Stable Operation

Abstract We investigated the operating conditions of a baffled membrane bioreactor (B-MBR) under which long-term stable operation can be achieved through the continuous operation of a pilot-scale B-MBR. Under appropriate operating conditions, the B-MBR was capable of achieving excellent treated water quality in terms of biochemical oxygen demand and concentration of total nitrogen. Excellent removal of total phosphorus was also achieved. In addition, the degree of membrane fouling was acceptable, indicating that stable continuous operation of a B-MBR is possible under the operating conditions adopted in the present study. Estimation of the specific energy consumption in hypothetical full-scale B-MBRs operated under the conditions recommended by the findings was also performed in this study. The results suggest that energy consumption in full-scale B-MBRs would be in the range of 0.20–0.22 kWh/m3. These results strongly suggest that energy consumption in MBR operation can be significantly reduced by applying the concept of a B-MBR.

Download Full-text

The First Two Years of Full-Scale Anaerobic Membrane Bioreactor (AnMBR) Operation Treating High-Strength Industrial Wastewater

Water Practice & Technology ◽

10.2166/wpt.2011.0032 ◽

2011 ◽

Vol 6 (2) ◽

pp. 1-2 ◽

Cited By ~ 6

Author(s):

Scott Christian

Keyword(s):

Industrial Wastewater ◽

Membrane Bioreactor ◽

High Strength ◽

Full Scale ◽

Anaerobic Membrane Bioreactor

Download Full-text

Optimisation of coagulation and chlorination in drinking water treatment: laboratory and full-scale studies

Water Science & Technology Water Supply ◽

10.2166/ws.2002.0055 ◽

2002 ◽

Vol 2 (2) ◽

pp. 131-137

Author(s):

N.D. Basson ◽

C.F. Schutte

Keyword(s):

Water Quality ◽

Large Fraction ◽

Drinking Water Treatment ◽

Agricultural Runoff ◽

Treatment Costs ◽

Full Scale ◽

Raw Water ◽

Activated Carbon Adsorption ◽

Treated Effluent ◽

Quality Optimisation

The paper deals with laboratory and full-scale studies aimed at optimising treatment processes at the Balkfontein plant of Sedibeng Water in South Africa. The raw water is highly eutrophic and contains a large fraction of treated effluent from domestic and industrial sources as well as agricultural runoff. The eutrophic nature and changing raw water quality give rise to many operational difficulties and high treatment costs as well as problems with the final water quality. Optimisation of the coagulation and chlorination processes was seen as a cheaper solution to these problems than to install advanced processes such as ozonation and activated carbon adsorption that would add greatly to treatment costs. The laboratory studies indicated that through optimisation of coagulation-flocculation and by replacement of pre-chlorination by intermediate chlorination (after primary sedimentation) most of the treatment problems could be solved and final water of the required quality produced without a large increase in treatment costs.

Download Full-text

Wastewater Lagoons in a Cold Climate

Water Science & Technology ◽

10.2166/wst.1987.0125 ◽

1987 ◽

Vol 19 (12) ◽

pp. 47-53 ◽

Cited By ~ 4

Author(s):

J. A. Oleszkiewicz ◽

A. B. Sparling

Keyword(s):

Control Mechanism ◽

Maximum Load ◽

Domestic Sewage ◽

Full Scale ◽

Cold Climate ◽

Odor Control ◽

Intermittent Rivers ◽

In Series ◽

Break Up ◽

Lagoon Systems

Severe climate, intermittent rivers and availability of land make facultative lagoon systems the method of choice in treating primarily domestic sewage from smaller municipalities. The lagoons are designed on a recommended maximum load of 55 kgBOD5/ha d to first cell, while the second cell provides storage. The discharge is twice annually and the occurrence of the spring ice break-up odor period is one of the primary criteria limiting this load. Based on full scale performance data, it is demonstrated that, from the standpoint of odor nuisance, the load to the first cell should be kept equal to or less than 35 kg/ha d. Full scale studies of an overloaded lagoon system show the futility of under-ice aeration for odor control. Mechanism of natural odor control during ice break up is elucidated. Upgrading of the overloaded systems or lagoons receiving significant industrial contribution is best achieved by construction of a 3–5 m deep aerated lagoon preceding the two or more facultative cells in series.

Download Full-text

The nitrogen removal potential of predenitrification systems in sensitive coastal areas

Water Science & Technology ◽

10.2166/wst.1995.0218 ◽

1995 ◽

Vol 32 (7) ◽

pp. 135-142

Author(s):

E. Görgün ◽

N. Artan ◽

D. Orhon ◽

R. Tasli

Keyword(s):

Water Quality ◽

Wastewater Treatment ◽

Nitrogen Removal ◽

Retention Time ◽

Treatment Process ◽

Hydraulic Retention Time ◽

Domestic Sewage ◽

Coastal Areas ◽

Careful Evaluation ◽

Denitrification Kinetics

Effective nitrogen removal is now required to protect water quality in sensitive coastal areas. This involves a much more difficult treatment process than for conventional domestic sewage as wastewater quantity and quality exhibits severe fluctuations in touristic zones. Activated sludge is currently the most widely used wastewater treatment and may be upgraded as a predenitrification system for nitrogen removal. Interpretation of nitrification and denitrification kinetics reveal a number of useful correlations between significant parameters such as sludge age, C/N ratio, hydraulic retention time, total influent COD. Nitrogen removal potential of predenitrification may be optimized by careful evaluation of wastewater character and the kinetic correlations.

Download Full-text