better together CIVIL/INDUSTRIAL AIR DIFFUSERS AERATORS MIXERS

Aeration and mixing better together Aeration and mixing Zenit offers a line of aeration and mixing products for the highly specialised civil and industrial wastewater treatment sector. Air diffusers 9" and 12" disc-shaped and 2" tubular air diffusers with elastomer membranes providing high oxygen transfer efficiency Stainless steel large bubble tubular types specifically for sand and oil separation Submerged aerators Venturi-type, which ensure an efficient combined mixing and aeration action and are especially suitable for homogenization and first rainfall storage tanks Mixers high-efficiency...

AIR DIFFUSERS Disc-shape and tubular air diffusers provide aeration with high oxygen transfer and low pressure drops, minimising energy consumption. Disc-shaped diffusers can be fitted with integral ball check valves. Zenit is able to design the most efficient solution for the customer's specifications, and supply the complete aeration system, including detailed assembly plans. Operating mode During operation, the membrane inflates to open the tiny holes and allow the air to flow out in the form of fine bubbles. When the blower stops, the membrane deflates and the tiny holes close to prevent...

Air diffusers better together Fine-bubble disc-shaped air diffusers Disc-shaped diffusers having elastomer membrane with tiny holes for application in water treatment processes in reactors with continuous or intermittent aeration, especially recommended for high-efficiency permanent installations. The quality, design and membrane hole size ensure unbeatable efficiency in terms of the ideal oxygen transferpressure drop balance. Technical characteristics OXYPLATE 9 Min. operating flow rate [Nm3/h] Max. operating flow rate [Nm3/h] Limit flow rate [Nm /h] (*) Outside diameter Active surface area...

Fine-bubble tubular air diffusers They are especially recommended for the construction of removable aeration systems and in all cases where a large output surface area is required with only a small number of air distribution pipelines. Diffusers basically consist of a head with threaded connection, a rigid polypropylene mount and a tubular membrane in elastomer with tiny holes, secured with stainless steel band clamps. Technical characteristics OXYTUBE 2-500 Min. operating flow rate [Nm /h] Max. operating flow rate [Nm3/h] Limit flow rate [Nm3/h] (*) Outside diameter Length of perforated section...

Air diffusers better together Large bubble tubular diffusers Constructed in AISI 316 throughout, the type of diffuser is used where the liquid has to be both mixed and oxygenated. Its ideal applications are aerated sand separators, aerobic digestion tanks, pre-aeration tanks and in general any installation where the use of steel is necessary due to the nature of the liquid for treatment. Bottom hole diameter [mm] Thread connection Bubble dimensions Body material The air emitted by the diffuser in the form of large bubbles combines with the flow of wastewater to trigger a spiral motion which encourages...

Submerged aerators SUBMERGED AERATORS Venturi-type submerged aerators ensure an efficient combined mixing and aeration action and they are especially suitable for homogenization and first rainfall storage tanks. JET OXY 80 and 150 units have a polyurethane (Vulkollan) diaphragm, easily replaceable without dismantling the pump from the ejector The JET OXY 80 device has a flange suitable for connection to electric pumps having DN80 and DN100 discharges. Operating mode They consist of submersible pumps with power levels up to 30 kW and channel impellers with large free passage combined with "OXY"...

Submerged aerators better together Submerged aeration systems JET OXY 50 units comprise a Venturi-type ejector coupled to a submersible electric pump rated from 0.37 to 1.5 kW with open multi-channel or vortex impeller. JET OXY models can be selected on the basis of the performance curve best suited to requirements, optimising consumption. Characteristics • Cast iron body (GJL-250) • Suitable for use with DRO and DGO pumps • Can be permanently coupled to the pump or mounted on the bottom of the tank using the automatic coupler (DAC type) OXY body (cone + integral diaphragm) Sliding flange with...

Submerged aerators JET OXY 80 ÷ 300 Submerged aeration systems JET OXY 80 ÷ 300 units comprise a Venturi-type ejector with replaceable diaphragm coupled to a UNIQA or Grey series submersible electric pump rated from 3.0 to 30 kW. Characteristics • Cast iron structure • Stainless steel diffuser cone • Diaphragm is interchangeable for flow rate adjustment or for easier replacement in the event of wear OXY body Interchangeable diaphragm Stainless steel diffuser cone Stainless steel screws Air intake pipe with flue filter and galvanised steel lifting hook Connecting tie-rod between pump and intake...

Mixers better together MIXER Essential components of water treatment and purification plants, the new Zenit mixers share the stylish looks, reliability and new-concept highefficiency motors of the UNIQA range. Submerged mixers are the most practical, efficient solution for mixing liquids in water treatment and purification plants. Their efficiency class IE3 motors, already applied on the Zenit UNIQA range of submersible pumps, keep running costs down, with low energy use and limited maintenance. Models available also with ATEX certification. Their complete compatibility and vast assortment of...

Series specifications 4 - 6 - 8 poles DIRECT TRASMISSION 4 poles REDUCTION GEARS Operating mode Suitably installed in tanks, these devices apply a force varying depending on the propeller diameter, shape and rotation speed to the liquid in which they are immersed, and keep the mass of fluid in motion to boost homogenisation and prevent sediment formation. Application Zenit ZMD and ZMR series mixers can be used in equalisation, denitrification and homogenisation processes in industrial and civil plants. They can be adopted in single or multiple installations, or in combination with bottom aeration...