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

EMU: Cellar Drainage pumps

Type KE

The pump of this series handle clean or lighly muddy water from pits, sumps, cellars, swimming pools and gardens. Alternatively for single phase A.C or three phase A.C



Light Design
Casing parts and impeller made of sturdy plastiv material. Shaft sealing: mechanical shaft seal/radial seal.





Very Robust Design
Casing parts and impeller made of light metal. Shaft sealing: mechanical shaft seal/ radial seal.

EMU: CERAM-Material Refinement

The highly efficient 2-component coatingof polymeric and ceramic shares, combines good protection against corrosion and high quality protection against abrasion.

• Increase of the efficiency by lower surface roughness
• Long service life of pumping station
• Alternative to stainless steel materials
  

EMU: Contractor's Pumps

Types KS

The pumps of this series handle very muddy sandy water. They are robust, resistant against dry operation, easy to handle and require nearly no maintenance. Alternatively for single phase AC. or Three phase AC.
Installation stationary or portable.
All EMU contractor's pumps are equipped with two mechanical shaft seals which are independent of the direction of rotation and an intermediate oil chamber.

Standard design
The powerful pumps can be equipped with the EMUBIL pump car.








Sewage resistant design
For use in liquids with corrosive components
(e.g. basic sewage).
Casing parts and impeller made of cast iron.
(e.g. acid liquid)
Arailable in material 1.4581,
zinc-free-bronze and coatings
(e.g. abrasive liquid)
Arailable in Abrasit

Design with explosion-proof submersible motor
For application in areas where there is hazard of explosion.







Design with axial discharge piece
For application in narrow sumps and wells.

EMU: Jet Aerators For Cleaning Of Storm Water Retaining Basins

Jet Aeration System For Cleaning of Storm Water Retaining Basins

Long lasting rain falls and thaw periods supply storm water retaining basins with large quantities of mud and solids. The WILO jet aerotion system avoids that solids settle on the walls and at on the bootom of the basin and thus consequently cleans the stormwater retaining basin or the channels in the collector chamber.
By means of an air aspiration pipe and a specially designed system of nozzles and underpressure is poduced in the jet pipe. Consequence: The air drawn in is mixed with the water. The produced air-water mixtureis then put into the basin with high speed in horizontal direction. the cleaning process is started.

Advanteges:

• Low investment costs
• Installation possible in already existing basins
• Fully automatic operation
• No surges
• Continuos outflow of the mud load
• No Odorous annoyance by pre-aeration of the sewage
• No anaerobic processes
• Saving of energy cost due to intermittent service
• easy to handle
  

EMU: New Motor Range 10"

New Motor range 10" type NU 911 with internal active cooling and a power range (50Hz) of 75-225 kW.

A permanently driven impeller on the motor shaft leads the cooling liquid directly through the bearing and the winding. So the lost heat can be optimally absorbed and dissipated to the circulating pump liquid via the external shroud. Due to the innovative technology a considerably higher energy density can be achieved with reduced operating temperatures at the same time. in addition to that the small installation diameter leads to a reduction of the investment and construction costs of wells and water pumping stations.

• 2 and 4 pole available for different applications
• vertical and partly horizontal installation possible
• standart design of cast iron (GG)/ stainless steel 304
• corrosion-resistant material design of zinc free bronze/ stainless steel 316
• warm water design up to 70°C
• voltage: 200-1000 V; 50/60 Hz

Advantages:

• power increase up to 25%
• active, internal cooling system
• higher duty in small well diameters
• No external cooling shroud required
  

EMU: Pump for Muddy and Waste Water

FA/TS Design
Sewage resistant pumps with big ball passage, strainer and pump foot.
They handle water with coarse solids, are robust, resistant against dry operation, handy and require nearly no maintenance. Removable strainer if coarse particles are to be pumped.
For three phase A.C., if required in explosion- proof design
Installation stationary or portable.


Wet sump installation Motor cooled by the surrounding pumped liquid. Shaft sealing: 2 mechanical shaft seals made of highly wear-resistant silicon-carbide.








Design with explosion-proof submersible motor
For application in areas where there is hazard of explosion.
Shaft sealing:
EMU block seal or
2 mechanical shaft seals made of highly wear-resistant silicon-carbide.




For immerged and emerged operation Motor with oil-cooling. Shaft sealing: WILO block seal or 2 mechanical shaft seals made of highly wear-resistant silicon-carbide.

EMU: Removal Device

During static thickening of treated sludge sludge water will occur, which will have to be transported to the intake of the sewage treatment plant. A special sucking device will do this job. In this construction a submersible sewage pump is installed in the basin upside down by means of a lowering device in such a way that the sludge water can be sucked off during operation. As the water in the basin surrounds the motor of the pump it is always properly cooled. The position of the pump is adapted to the water level in the basin by means of the lowering device. An alternative to the installation with lowering device is to fix the pump with a pontoon on the water surface. This means that the pump automatically adapts to changing water levels and is always ready for operation. This system is also used in SBR-installations for removing clear water. After the sedimen-tation phase the clear water can be pumped off by using the system with pontoon. The removal of floating sludge on final clarification basins is a task that constantly occurs. By installing the lowering device at the scraper bridge the floating sludge can be sucked off and transported to the sludge treatment.

EMU: Submersible Pump

Economical Solutions

For Several decades WILO have been producing submersible pumps for water supply, lowering of water level and booster plants. These highly developed quality products make possible a maintenance-free application. They are a result of many years of experience and intensive development activities and have proved to be worthwhile under teh most difficult conditions.
Due to this comprehensive program of submersible pumps there is a variety of solutions for hydro-economics problems-in the municipal and industrial area.

Application
Besides their traditional applications submersible motor pumps are increasingly installed in sumps, collecting chambers, storage or intermediate reservoirs, lakes dams or rivers for:

• Supply of drinking industrial and emergency water
• As booster pumps in supply networks
• Water treatment plants
• Irrigation and sprinkling
• Circulating purpose in air conditions and industrial cycles
• Fire Fighting and sprinkler systems
• lowering and maintaining of the ground water level in mining and civil engineering
• Use of geothermic energy
  
• fountains and hydraulic organs
• Snow canons
• Off-shore-plants
  

EMU: Switch Gear and Control Panel

WILO EMU Anlagenbau plans, produces and assembles the electrical switch gears and control panels for our submersible clear water and sewage pumps for waterworks and sewage treatment palnts.
Product range:

• Low voltage distributor systems
• remote control and network technique
• control panels
• automatic emergency power control
• alarm systems
• process visualization devices

According to the principle all about water -everything from a single source. we also install our submersible clear water and sewage pumps. For deep wells we supply the necessary rising mains, well head covers, fittings and hydraulic accessories and install the pump. In waterworks and booster plants our mechanics execute the assembly of the complete machinery equipment ready for operation.

EMU: Transport of The Sewage-Drainage Systems

Pressure drainage systems care for the drainage of remote farms, enterprises and settlements. The collected sewage is transported to the public sewer system through EMUPORT underground pumping stations. They are equipped with submersible pumps either in wet or in dry sump installation. You can choose between sumps of PEHD-quality or concrete.
We especially want to mention EMUPORT pumping stations with pumps in dry sump installation and solids separation system in a PEHD-sump.

EMU: Water Supply and Lowering of Water Level With Submersible Pump

Water Supply and Lowering of Water Level With Submersible Pump

Worldwide application
All over the world communities and industries count on WILO submersible pumps for water supply and lowering of water level. their mature technology has proved to be worthwhile in practice a thousand times. The advantages of these type are their slim construction, easy handling and the fact that no maintenance is required. the single or multi-stage centrifugal pumps are directly installed in the pumped liquid. By precisely trimming the impellers it is possible to exactly determine the pumping duty required and so to achieve economical solutions for all pumping problem. These are convincing arguments for the use of WILO submersible Pumps.

Pumping of water
For pumping groundwater out of boreholes WILO submersible motor pumps are graded according to the usual well diameters. The comprehensive range reaches from 4" up to 24" and bigger. These pumps are vertically installed and suspended at the rising main. Installation depth and well productivity determine the pump to be use of suitable materials for a long and maintenance-free pump operation.
In basins, lakes and rivers a horizontal installation is possible without problems.

EMU: EMUPORT Dry Sump Installation

EMUPORT Dry Sump Installation


EMUPORT underground pumping stations
The best possible protection against corrosion is one of the most important demands placed on a pumping station. Therefore materials are used in EMUPORT underground pumping stations which guarantee an optimum operation.
– PEHD climbing aid or stainless-steel ladder with stainless-steel access aid
– all pipelines including union piece of PEHD

– PVC ball valve
– cover of stainless steel or with BEGU class D withstands foot traffic

EMUPORT underground pumping stations with pumps installed in dry sump
The sewage flows into a separate PEHD collection reservoir forming part of the plastic sump. The pump compartment itself stays clean, dry and odor-free. Maintenance and assembly work takes place under hygienic conditions. Additional equipment for these pumping stations suitable for aggressive sewage:

– drainage pump at the bottom of the sump
– barrier is controllable in the sump
– collection reservoir and sump aeration in PEHD tubes; aboveground optionally in stainless steel material
– WILO submersible sewage pumps with single-channel impeller or vortex impeller
– Protection type IP 68 (submersible)

EMU: EMUPORT Solid Separation System

Solid Separation System
EMUPORT-PEHD underground pumping
stations with pumps installed in dry sump and solids separation system
The pumps do not come into contact with the solids in the sewage itself during the pumping process. This results in the following advantages:
– low maintenance and operating costs for moving parts of the pumps
– pump compartment remains dry, clean and odor-free
– hygienic conditions for maintenance and assembly work
– can be equipped as double pumping station; the plant remains fully functional, even when a pump is being serviced

– WILO submersible sewage pumps with suitable impeller
– no corrosion problems, no consequences in case of formation of sulfur
– Application of pumps with ball passage <>