Determining Major Denitrifiers and Major Physicochemical and Operational Factors Influencing their Performance in a Full-Scale Water Reclamation Plant

2015 ◽  
Vol 2015 (14) ◽  
pp. 4117-4129
Author(s):  
Betty H Olson ◽  
Tongzhou Wang ◽  
Pitiporn Asvapathanagul ◽  
Diego Rosso ◽  
Phillip B Gedalanga ◽  
...  
Keyword(s):  
Full Scale ◽  
Water Reclamation ◽  
Factors Influencing ◽  
Operational Factors

Some Factors Influencing Friction Brake Performance: Part 1—Investigation of Full-scale Brake Systems

1989 ◽  
Vol 111 (1) ◽  
pp. 2-7
Author(s):  
Z. Barecki ◽  
S. F. Scieszka
Keyword(s):  
Pressure Distribution ◽  
Elastic Deformation ◽  
Full Scale ◽  
Factors Influencing ◽  
Braking Torque ◽  
Brake Performance ◽  
Friction Brake ◽  
Friction Lining

In this paper the effect on braking torque of the geometry of contact between brake shoes and drums is presented. It is shown that elastic deformation as well as errors in dimensional and assembly errors substantially affect the value of the braking torque. Investigations of pressure distribution on friction lining, brake factor, brake element deformation, and wear of linings carried out on mine winder installations are presented.

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

2018 ◽  
Vol 13 (3) ◽  
pp. 589-593 ◽  
Author(s):  
T. Niwa ◽  
R. Yin ◽  
M. H. Oo ◽  
H. Noguchi ◽  
T. Watanabe ◽  
...  
Keyword(s):  
Water Quality ◽  
Membrane Bioreactor ◽  
Production Capacity ◽  
Domestic Sewage ◽  
Full Scale ◽  
Stable Operation ◽  
Water Reclamation ◽  
Membrane Systems ◽  
Nominal Capacity ◽  
Net Flux

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.

scholarly journals Cost comparison of full-scale water reclamation technologies with an emphasis on membrane bioreactors

2017 ◽  
Vol 75 (11) ◽  
pp. 2562-2570 ◽  
Author(s):  
Raquel Iglesias ◽  
Pedro Simón ◽  
Lucas Moragas ◽  
Augusto Arce ◽  
Ignasi Rodriguez-Roda
Keyword(s):  
Water Reuse ◽  
Membrane Filtration ◽  
Membrane Bioreactors ◽  
Full Scale ◽  
Cost Comparison ◽  
Capital Expenditures ◽  
Water Reclamation ◽  
Physical Chemical ◽  
Implementation Costs ◽  
Treatment Facilities

The paper assesses the costs of full-scale membrane bioreactors (MBRs). Capital expenditures (CAPEX) and operating expenses (OPEX) of Spanish MBR facilities have been verified and compared to activated sludge plants (CAS) using water reclamation treatment (both conventional and advanced). Spanish MBR facilities require a production of 0.6 to 1.2 kWh per m3, while extended aeration (EA) and advanced reclamation treatment require 1.2 kWh per m3. The energy represents around 40% of the OPEX in MBRs. In terms of CAPEX, the implementation costs of a CAS facility followed by conventional water reclamation treatment (physical–chemical + sand filtration + disinfection) ranged from 730 to 850 €.m−3d, and from 1,050 to 1,250 €.m−3d in the case of advanced reclamation treatment facilities (membrane filtration) with a capacity of 8,000 to 15,000 m3d−1. The MBR cost for similar capacities ranges between 700 and 960 €.m−3d. This study shows that MBRs that have been recently installed represent a cost competitive option for water reuse applications for medium and large capacities (over 10,000 m3d−1), with similar OPEX to EA and conventional water reclamation treatment. In terms of CAPEX, MBRs are cheaper than EA, followed by advanced water reclamation treatment.

Full Scale Test on Chemical P Removal during a Step Feed BNR Study at John E. Egan Water Reclamation Plant

2006 ◽  
Vol 2006 (7) ◽  
pp. 5176-5184
Author(s):  
Heng Zhang ◽  
Jain S. Jain ◽  
Mary Brand ◽  
Brian Perkovich ◽  
Kathy Lai ◽  
...  
Keyword(s):  
Full Scale ◽  
Water Reclamation ◽  
Full Scale Test ◽  
Scale Test ◽  
P Removal

scholarly journals Factors influencing electrochemically enhanced sacrificial anode phosphate recovery

2021 ◽  
Vol 237 ◽  
pp. 01005
Author(s):  
Xiaoyan Zhou ◽  
Gang Zhang ◽  
Haijian Shi
Keyword(s):  
Recovery Process ◽  
Phosphate Removal ◽  
Experimental Results ◽  
Sacrificial Anode ◽  
Practical Applications ◽  
Plate Spacing ◽  
Factors Influencing ◽  
Phosphate Recovery ◽  
Operational Factors ◽  
Removal Efficiencies

The recovery of phosphate from wastewater has been attracting increasing attention. In this study, the technology of an electrochemically enhanced sacrificial anode was applied to investigate the phosphate recovery process from sewage. The experimental results indicated that, when residence times ranged from 20 to 120 s, and phosphate removal efficiencies ranged from 24.65% to 95.27%. When the current density ranged from 10 to 70 A/m2, the phosphate removal efficiencies ranged from 56.73% to 95.17%. When the plate spacing ranged from 1 to 5 cm, the phosphate removal efficiencies ranged from 83.48% to 9.48%. The experimental results confirm the conclusions of this study about controlling operational factors in practical applications to increase phosphate removal efficiencies.

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