Tuke and Bell is one of the UK's leading manufacturers of sewage purification equipment with over 90 years experience in design and production.
Heavy investment in the most advanced technology and the latest computer aided design systems facilitate the production of the highest quality equipment. Through serving the needs of both the water industry and domestic customers to the highest possible standards, we have achieved approval of our Quality Management System to ISO 9001 for Process Engineering, Design, Manufacture, Installation and Servicing of Water Purification Equipment.
Tuke and Bell offer a full range of Aeration equipment either horizontally or vertically mounted together with Bubble Aeration Systems. The range is manufactured to standard designs but can be easily adapted to suit individual requirements.
The Tuke & Bell High Intensity slow-speed Vertical Aerators have been sized to provide design engineers with flexibility to meet all physical and process conditions.
|
The medium-speed units are normally known as "Standing Wave Units" which means that in operation they create a forced vortex around the Aerator. This in turn produces a standing wave causing intensive surface agitation and entrainment of air / oxygen across the tank surface as a result.
The medium-speed Aerator is level sensitive and must be adequately immersed to avoid the creation of unstable vortices underneath the Aerator. Anti-vortex baffles should be installed within the tank to provide stable conditions.
|
It is advisable to take advantage of Tuke & Bell's knowledge and experience by consulting prior to finalising plant design in order to get the most economic and reliable selection. We would be pleased to submit comprehensive technical data with recommendations to suit your specific application.
The Tuke & Bell range of Horizontal Aerators has developed through detailed research and comprises 8 models from 2.2 to 37 kW input and 700 mm dia. x 3 m long to 1000 mm dia. x 9 m long.
Improved rotor 'life' has been achieved of the larger models through clamp-on replaceable blades which minimise the fatigue, weld decay and fretting corrosion conditions normally associated with rotors of a similar size where blades are rigidly attached to the tubular shaft.
Increased oxygen potential has been achieved through the increased number of blades which the new design permits.
Efficient circulation is achieved by the design of the hydraulically profiled blades which create thorough mixing conditions, thus avoiding quiescent pockets within the tank or channel where settlement of solids could occur.
Ease of maintenance has been especially considered in the design of both the clamp-on blades and splash plate.
The robust drive units and bearings are designed for a life expectancy of 100,000 hours.
Tuke & Bell high intensity Horizontal Aerators are ideal for conventional aeration, extended aeration and oxidation ditches. They can also be effectively used in various concepts of aeration such as plug flow, tapered aeration, complete mix and contact stabilisation.
The Tuke & Bell Fine Bubble Aeration System combines all the advantages of porous dome technology for producing a well-nitrified effluent with the use of plastic pipework and fittings suitable for the waste water field.
The system is based on 178 mm dia. ceramic diffuser domes pre-clamped to gantry plates. For maximum efficiency, the diffuser domes are set in a 'design array' which avoids the risk of deposition at one extreme and inefficient bubble coalescence at the other.
The system can be provided with a 3:1 turndown facility. The importance of the floor fixing adjustment design feature for accurate levelling cannot be over-emphasised. Other systems have encountered severe blockage problems due to uneven tank floors coupled with the lack of a levelling facility.
Since air in diffuser systems does not conform to the isothermal or adiabatic phases of transfer but to the polytropic inter-phase, the blower characteristics are of prime importance.
Tuke & Bell systems can include blowers together with bag filters, or wet or electrostatic precipitators to suit environmental and operating conditions.
Tuke & Bell Coarse Bubble Aerator Systems are normally limited to extended aeration plant and aerobic digestion processes where the risk of blockage rules out the use of the inherently more efficient Fine Bubble System.
The capital cost of the Coarse Bubble System is lower since no expensive air filtration equipment is required.
The oxygen transfer efficiency however is much lower than with the Fine Bubble concept.
The matrix is normally formed by an array of jet units connected to a main inlet branch. Each array consists of 40 individual course bubble jets giving an effective aeration and combined mixing regime.
Tuke and Bell reserve the right to modify the design or amend the dimensions in respect of any equipment described on this brochure.
| Top of Page | Back | ©
2000 Tuke and Bell Ltd. All rights reserved. Last Updated : 16 March 2004 |