Browsing by Supervisor "Stephenson, Tom"

Advanced reactor technology for wastewater treatment.

Hassard, Francis (Cranfield UniversitySWEE, 2015-04)

Elevated stringency regarding discharges and an aging asset base represent challenges to modern wastewater treatment. This requires upgrade of existing wastewater assets for low energy nutrient removal for minimal cost. ...

Bioaugmentation for the improvement of nitrification in wastewater treatment

Stephenson, Dianne (Cranfield University, 1993-07)

The literature relating to nitrification in wastewater treatment and bioaugmentation as a method to enhance wastewater treatment processes is reviewed. The use of a commercially available bioaugmentation product (based ...

Biological treatment of coke making wastewater.

Raper, Eleanor (2017-04)

Production of coke for steel manufacturing produces a wastewater containing total nitrogen (TN) (up to 600 mg/L) alongside toxic compounds phenol (60 - 400 mg/L), thiocyanate (SCN-) (100 - 400 mg/L), polycyclic aromatic ...

Biomass effects on membrane bioreactor operations

Germain, E. A. M. (Cranfield University, 2004-10)

Diverse operating parameters were investigated for their effects on biomass characteristics, membrane fouling and aeration efficiency in submerged membrane bioreactors (MBRS). The characteristics of the solid phase of ...

Chemical Inhibitors for Biomass Yield Reduction in Activated Sludge

Mayhew, Maxine Eleanor (Cranfield University, 1999)

Increasing legislation and rising treatment and disposal costs have promoted optimisation of the activated sludge process to encompass reduction of waste biomass. Manipulation of process control such as increasing sludge ...

A comparison of floating and sunken media biological aerated filters (BAF)

Mann, Allan (1997-03)

The aim of this experimental work was to directly compare the performance of two types of media support in pilot scale biological aerated filter (BAF) reactors. The two media types were identical in shape and size except ...

Design and evaluation pf a small package sewage treatment system

Daude, D. (Cranfield University, 2003-06)

The aim was to develop and subsequently evaluate a small package sewage treatment system that combined the commercial demands of the market with current and future environmental legislation in the UK. Questionnaires sent ...

Development of a novel medium to improve the performance of Biological Aerated Filters (BAFs)

Moore, Rebecca Ellen (1999-10)

A foamed clay, StarLight C, was selected as a potential BAF medium after qualifying as a filter medium according to the BEWA standard tests, and showing the propensity to collect a biofilm. At loading rates > 10 kg COD/ ...

Disinfection of grey water

Winward, Gideon Paul (Cranfield University, 2007-10)

The reuse of grey water, for applications such as toilet flushing and irrigation, represents a potential sustainable solution to water shortages experienced by regions worldwide. Although reused grey water is not intended ...

Effects of configuration on the operation of membranes in membrane biological reactors

Winkler, Gudrun (Cranfield University, 2011-01)

The aim of this work included the investigation of the impact of membrane material properties on fouling propensity and permeate flux decline in MBR biomass systems. Furthermore, the impact of membrane configuration on ...

Effects of shear and mixing on a continuously-fed stirred tank reactor for aerobic, biological wastewater treatment

Berry, Alice L. (Cranfield University, 2002-10)

Treatment of domestic wastewater in a 9 L well defined conventional biotechnology type reactor was investigated over a range of stirrer speeds (8.3 to 16.7 s-1) and retention times (8 to 12 h). Parameters of reactor ...

Enhanced bio-minerals production using catalysts to accelerate resource recovery in wastewater treatment plants.

Colston, Robert (Cranfield UniversitySWEE, 2023-01)

The biomineralisation mechanisms of five known bio-struvite producing microbes have been established and their ability to recover said biomineral from synthetic solutions and sludge dewatering liquors has been trialled. ...

The impact of carrier media physical properties on moving attached growth systems.

Dias, Joana Manuel Silva (2018-02)

Moving attached growth processes are commonly used for the effective removal of organic pollutants and nitrogen in wastewater treatment plants. In these processes, biofilm grows attached to plastic media. Moving attached ...

Micronutrients for wastewater treatment

Burgess, Joanna E. (1999-09)

The results of a postal survey strongly suggested that new developments in the optimisation of biological treatment processes would greatly increase the ability of wastewater-treating industries to adapt to Direct Toxicity ...

A new route to recover phosphorus from wastewater: biological struvite production.

Simoẽs, Francisco Adriano Pereira (2017-07)

Struvite production mediated by bacteria has opened a new route for phosphorus (P) recovery but its application to wastewater sludge dewatering liquors (SDL) has not yet been explored. The aim of this PhD was to understand ...

Recycling of carbon fibre composite material

Lloyd, Rachel Louise (Cranfield University, 2002-02)

Different routes for recycling carbon fibre composites from the aircraft industry were investigated for feasibility., Literature analysis revealed little previous ·work in this area, with most composite recycling ...

The role of environmental effects and Acinetobacter spp in enhanced biological phosphate removal

Jones, M (1996-02)

One aim of this work was to define the role of Ac/nefojbacfer spp. in enhanced biological phosphate removal (EBPR). A culture enrichment and selective medium technique was developed to isolate Acinetobacter spp. from ...

Temperatures in high efficiency deep grinding

Bell, Andrew John (Cranfield University, 2009-02)

This research considers the temperatures generated in the workpiece during profile and cylindrical traverse grinding in the High Efficiency Deep Grinding (HEDG) regime. The HEDG regime takes large depths of cut at high ...

Two-Phase Flow in Circular Secondary Sedimentation Tanks

Matko, T. I. R. (Cranfield University, 1997-12)

The main objective of this work was to optimise a numerical model to predict the flow in circular secondary sedimentation tanks. The numerical models in the literature were reviewed and the new opportunities for research ...

Upflow and downflow biological aerated filters (BAFs) for wastewater treatment

Mendoza-Espinosa, Leopoldo Guillermo (1999-03)

Investigations on two small pilot-scale biological aerated filters operating in upflow and downflow mode using identical media were undertaken in order to compare their performance for the removal of carbonaceous matter ...

Browsing by Supervisor "Stephenson, Tom"

Browsing by Supervisor "Stephenson, Tom"

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