EMU: Rotox Jet Aerators system

Aeration in biological treatment systems For aeration and circulation in activating basins of the biological cleaning stage we use the aerators (Rotox system). An important prerequisite for a successful biological sewage treatment is a sufficient oxygen input. In addition to the high oxygen exploitation in the sewage a thorough circulation of the basin contents is achieved.Advantages:– universal use– later installation into existing plants without problems– uncomplicated handling– independent of basin shape and dimension– easy installation at low cost– adaptable, flexible system– intermittent operation is possible

EMU: Sludge treatment

Waste water treatment results in the necessity of treating the arising sludges. This means that the sludge is stabilized and thickened by various processes. WILO submersible mixers which can be adapted to the local conditions to reach optimal results, ensure the necessary circulation.To keep the sludges pumpable, WILO submersible mixers with special propeller designs are used to homogenize them.

EMU: Megaprop submersible mixers

Low Speed Submersible Mixers WILO Maxiprop and WILO MegapropIn sewage treatment plants they are used for the suspension of solids and/or for the selective flow generation.In activating, anaerobic and denitrification basins low speed mixers prevent settling of activated sludge flakes, i.e. they stir them up and keep them in suspension.The backwards bent blades ensure a selfcleaning effect of the propeller even when there are long-fibrous solids in the liquid. The forces are distributed to three propeller blades when the WILO Megaprop is used, which results in the realization of a very high thrust and smoother running. This means that for special kinds of use the number of mixers can be decreased.
Maxiprop and Megaprop submersible mixers are installed and removed by means of a lowering device which is fixed at the bridge and at the floor. If the conditions are suitable also a tripod unit can be used. The advantage of this installation version is that no bridge is required. There is the choice between the following materials: galvanized steel or stainless steel.

EMU: Uniprop submersible Mixers

The use of WILO-Uniprop submersible mixers with gearbox in industry, communities and agriculture makes great demands on their reliability and constancy of performance. It is possible to choose the optimal submersible mixer for every field of application through the modular assembly of different propellers, transmission steps and motors. Hydraulic optimal propellers made of stainless steel, steel, GFK (polyester resin reinforced by glass fibre) or PUR (polyurethane) enable a high efficiency and because of that vast savings of energy costs.Optimized adaption to requirementsIn order to improve their efficiency the Uniprop submersible mixers have been equipped with planetary gearboxes. They make an exact adaption to the individual service conditions possible.
WILO lowering devices are used for descending the WILO-Uniprop-submersible mixers from the tank edge into the tank without problems. Together with an auxiliary lifting device make WILO they enable individual positioning of the mixers. A ball pivot in the bottom bearing plate enables an installation to grounds inclined up to 30° and if the conditions are suitable, the application of a tripod unit is possible.There is the choice between the following materials: galvanized steel or stainless steel.

EMU: Recirculation Pump

From this product line our recirculation pumps were developed. Today they achieve an important contribution to compliance with the ever stricter degradation quality requirements placed upon both communal and industrial sewage works. Recirculation pumps support the selective reduction in pre-treated sewage of the included ammonia nitrogen.A further application is the production of well controlled horizontal flows for water rides in amusement parks.ApplicationRecirculation pumps are suitable for pumping big volume flows at low flow velocities in a gentle and energy-saving manner.
Normally there are low heads and the required flow rates can be adapted to the requirements imposed by the process, for example by variable frequency drives.Possible applications:– Sewage treatment: activation, nitrification, denitrification, oxidation ditches, phosphate elimination– Amusement parks: flow channels– Ponds: flow generation, irrigationSewage treatment plantsToday in biological treatment of municipal sewage treatment plants basically nitrogen elimination takes place.Elimination of the ammonia nitrogen which is part of the pretreated sewage is effected in two steps. In the first step the ammonia nitrogen is oxidized to nitrate (nitrification).In the second step, a partial reduction of the nitrate to molecular nitrogen follows (denitrification).

For the biological treatment of nitrogenous sewage it is necessary that the sewage runs several times through the biological treatment. Only in this way the purification values prescribed by law can be reached.In these continuous processes at big pumping capacities mostly only low heads have to be passed. This task is fulfilled by recirculation pumps. Amusement parksOne of the most popular attractions in any amusement or adventure park are the flume rides with their long slow rise and rapid descent. In a log flume the car is drawn mechanically up the ascent, and will then descend unaided under its own and its passengers weight. This necessitates the presence in the canal of a lubricating film of water. For the necessary lubrication of the descent water must be pumped in a separate canal to the top of the ride.This continuous water cycle is created by recirculation pumps. These pumps are specially designed for pumping big quantities of water to low heights.

EMU: Booster Plants

Booster Plants

WILO booster pumps are installed as booster for water supply and circulating systems. They provide enough water pressure for high buildings, elevates parts of cities and municipalities as well as in industrial applications.

Booster pumps can be installed vertically, up to a certain number of stages, also horizontally. In case of vertical installation the space requirement of the pumping installation is very low, in case of horizontal installation the complete pipework is laid at one level.

The operation
WILO booster pumps have flanges ends and can be readily connected in line with existing pipework or in a by-pass system.
They can be used for axial or lateral suction inlet on variable locations. WILO pumps are built according to the needs on site.

Using the incoming pressure the booster pump increases the pressure to what is required. instead of using a by-pass the WILO booster pump can also be equipped with an annular suction valve. This valve allows free water flow through the pump, when the pump is shut off.
Control Possibilities of WILO bosster pumps:

• Water level related-by electrodes
• Pressure related - by pressure gauge
• Speed controlled- by frequency drives
• Time related-by timer
  

EMU: Bottom Intake Pumps

WILO, the world's leader for clean water pumping equipment has developed and manufactured clean water pumps for more than five decades. During this time WILO has established itself as the leader in design and engineering of clean water.Products WILO has stood fast through the years,relying on its superior engineered product to rise above the competition, not value engineering it's productto complete with the volatileclean water market.

S&N pump company, the worlds leader in sea water submersible design, innovation, new product intoduction, sales and service with over 5 decades of providing new, innovative designs and specially coatings for the corrisive sea water environment. S&N pump company and WILO have jined to produce the worlds first sea water submersible equipment, specifically designed for operation in sea water. Together we have set a new standard for sea water service submersibles and stand alone, head and shoulders above rest in sales, service, reliability of offshore pumping equipment.

Complete seawater lift pump systems and skidded pump packages including:

• Submersible pumps and motors in all bronze constraction
• Dedicated preload pumps
• Bottom suction submersibles
• Shrouded booster pumps
• Contractors pumps