In the modern TPI System, the separating surface area is increased vertically by the addition of a number of parallel plates mounted at an inclination. This not only affords a dramatic space saving but also facilitates very small separating diameter.View
DAF is a gravity seperation process whereby the separation of two phases is achieved by increasing the specific gravity difference of the two phases. This is achieved by attaching micro air bubbles, brought about by saturating water with air under pressure, and then expanding the wa terstream through valves to atmospheric pressure. These micro bubbles nucleate onto the solid particles to be separated, thus lowering the specific gravity and allowing contaminants to rise to the surface.
Suspended solids, grease and oil are very efficiently removed by DAF, and a combination of screening and DAF results in BOD/COD removals upto 60% depending on the application.However, a combination of flocculation and floatation can result in BOD removals of around 80-90%View
The pipe flocculator is a plugflow reactor in which processes such as coagulation, flocculation, demulsification, precipitation and pH control can take place under hightly controlled and well defined conditions. It is a far more compact, cost-effective and easier to operate than the existing technologyView
The corrugated plate pack represent the very heart of our various purification systems consisting of a number of parallel corrugated plates (see photograph). These are framed in a housing and the whole pack is stiffened by a frame made from plastic material and/or steel. The liquid to be treated flows through the spaces between the corrugated plates. Flow through the pack is laminar thus allowing the separation to take place under ideal conditions. In addition, much attention has been given to the profile of the corrugated plates. These have been chosen so that a smooth transfer and compaction of the separated particles is effected. To promote equal and uniform supply to the plates, specially designed flow baffles are used. In order to reduce the frictional resistance between the separated material and the corrugated plates to the minimum, particular attention was paid to the smoothness and hardness of the plate surface. The corrugated plates as well as the casing are made from glass fiber reinforced isophtalacid polyester resin. This material is resistant to the most frequently used chemical additives and temperatures. For applications under more aggressive conditions bisphenolic polyester resin or another suitable material is used. For erection and inspection purposes the plate pack has been fitted with lifting eyes so that it can be easily removed from or replaced into the installation. Upon request these plates can be made of other GRP resins like Orthopthalic acid, Bisphenol and Vinyl Ester Resins. Stainless steel packs have also been supplied as a special case.View
Filtration is a widely used method in the treatment of sludge produced by wastewater treatment. It can be separated by drainage through sand beds, it can be mechanical under vacuum middle or high pressure conditions which require more sophisticated equipment. Filter presses operate applying very high pressures to the cake (from 5 to 15 bars and sometimes even more). The filter press is a solid liquid separation device using the principle of pressure feeding. It has been used successfully in almost every industrial filtration processes. The Filter Press comprises a set of vertical, contrasted recessed plates, presses against each other by hydraulic jacks at one end of the set. The pressure applied to the joint face of each filtering plate must withstand the chamber internal pressure developed by the sludge pumping system.View