31.10.2011

Improve Filtration and reduce costs

MANN+HUMMEL offers a newly developed modular skid design and an improved flow geometry for the microfiltration and ultrafiltration of water. Customer benefits are considerable savings with regard to energy and space requirements, higher filtration performance and improved mechanical cleaning.


Ludwigsburg, November 1, 2011 - MANN+HUMMEL has developed a new modular skid design for up to 50 parallel filter modules for water filtration. The compact design offers substantial savings with materials, e.g. for piping, which improves handling and reduces costs. The advantage of the modular design is that it can be adapted easily to meet the specific needs of customers regarding ultrafiltrated water.

MANN+HUMMEL is able to exploit is extensive experience over many years in the simulation of the flow geometry of fluids in the automotive field and has now transferred its expertise and experience over to the ultrafiltration of water. An improved flow concept based on cross-flow enables improved mechanical cleaning, energy savings and increased operational flexibility. The cross-flow mode generates a high speed cross-flow along the membrane and this automatically carries the fouling products (depositions) with it and thereby extends the life of the membrane and minimises the cleaning cycle. In addition, less cleaning agents are required for the regeneration of the membrane.

Depending on the application, as an alternative to cross-flow the flow of the water in the module can be made in dead-end mode. Using dead-end filtration the fluid flows with a low pump pressure against the membrane and the depositions are washed out at regular intervals with a rinsing process.

In order to improve the efficiency of the membrane cleaning, during the rinsing process air is also applied. This two stage flow increases the force exerted on the dirt particles which are deposited on the surface of the membrane or in the pores. The improved mechanical cleaning reduces the use of cleaning agents required to detach deposits from the membrane surface. A further advantage of the two-stage flow is that it reduces the consumption of clean water required for rinsing, leading to a lower energy consumption for the pump.

MANN+HUMMEL uses the new skid design and improved flow geometry in its ultrafiltration systems of the Klar-series. The Klar-series is suitable for the treatment of process and service water for small rural communities, towns and villages, hotels and resorts and also for the treatment and recycling of industrial process and waste water. It removes foreign particles, and bacteria with a turbidity of less than 0.1 NTU. To give an example: Trained people manage to see a turbidity of more than 10 NTU. Maintaining the turbidity under 0.1 NTU means that the system delivers a consistent supply of fresh, clean water on time and every time. It filters a variety of suspended solids and has a bacterial removal rate of 99.999 %. In addition, the Klar-series does not employ any water purification chemicals for the filtration process, thus ensuring a high quality supply of process and service water.

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About MANN+HUMMEL
The MANN+HUMMEL Group is a development partner and original equipment supplier to the international automotive and mechanical engineering industries. Employing approx. 13,200 people at 41 locations worldwide, the company achieved turnover of 2.18 billion euros in 2010. The group´s product portfolio includes air filter systems, intake manifold systems, liquid filter systems, cabin filters and cylinder head covers made of plastic with many integrated functions for the automotive industry, as well as filter elements for vehicle servicing and repair. For general engineering, process engineering and industrial manufacturing sectors the company´s product range includes industrial filters, a series of products to reduce carbon emission levels in diesel engines, membrane filters for water filtration, filter systems and complete lines as well as units for conveying, dosing and drying of free flowing plastics. Further information about MANN+HUMMEL can be found under www.mann-hummel.com.

The group´s water division has its headquarters in Singapore. Further information is available at www.mannhummel-water.com.