This rotating half bridge Clarifier mechanism rotates through a specially designed central pivotal heavy duty slewing ring bearing thus taking care of any undulations in the tank coping. A sturdy current collector (slip ring assembly) power the end drive. A number of blades are arranged in a formation simulating scraping action equal in effect to continuous parabolic blade. Each blade is free to hinge and ride at right angles to the tank flow and is able to swivel at its centre to flow the contours of the tank floor at any angle.

Fitted with a sturdy drive arrangement consisting of roller bearings. Twin (Double) Scraper arm sweeps the floor twice in one revolution and are designed to cover the entire floor area. This ensures complete and efficient sludge removal.

Uniqure Features :-
Additional scraper blades provided in the central sludge hopper so as to prevent any possible sludge deposition there. Simple and easy to maintain. Inlet (FEED) well designed to efficiently disperse water without creating undue turbulence in the settling tank.

The aerator Device is the heart of an activated sludge plant. It is the type of aeration device employed, to perform the exacting duty of providing oxygen to the living organisms. In order to do this function efficiently, the aeration device must not only be capable of transferring oxygen from the atmosphere to the liquid, but must also distribute the oxygen through the bulk of the liquid to the micro-organisms. Simultaneously, it should keep the sludge in suspension, and most important, should provide complete intimate and uniform mixing of the liquid. Only by performing both the mixing and aerating functions equally well will efficient treatment be obtained.

Liquid is drawn through the core at high velocity by the high speed rotation of the impeller. The liquid hits the deflector and produces an area of high intensity spray diffusion. A large and continuous air/water interface for oxygen is thus created. The most common cause of failure of this continuously running high speed machine is inadequate protection of motor from high intensity spray of liquid.

The two basic methods of aerating wastewater are :-
To introduce air or pure oxygen into the waste water with submerged diffusers or other aeration devices. To agitate the waste water machanically so as to promote solution of air from the atomosphere.

A diffused air system consists of diffusers submerged in the waste water, header pipes, air mains and the blowers and appertures through which the air passes.

In the past, the various diffusion devices have been classified as either fine-bubble or coarse-bubble, with the connotation that fine bubbles were more efficient in transferring oxygen. The defination or terms and the demarcation between fine and coarse bubles, however, have not been clear. Therefore, the current preference is to category the diffused aeration systems by the physical characteristics of equipment.

Three categories are defined :-
1)  Porous of Fine Pore Diffusers
2)  Nonporous Diffusers and
3)  Other diffusion devices such as Jet Aerators, Aspirating Aerators
     and U-tube Aerators.