Waste Water Treatment

Since the 80th membrane units specially Nanofiltration and Reverse Osmosis Units are more and more used also in waste water treatment. This is a result of a further improvement of membrane materials, the development of advanced module technologies as well as the improved cleaning methods for membranes.

Membranes are principally excellent qualified for the selective separation of water contaminants. In heavy duty applications the disc module technology is required.

mft offers for waste water applications the patented Circular Disc Module (CD - Module) (Patent No. DE19536560). This module is an optimised membrane module in respect of the fluid dynamics.

In comparison to other modules even disc modules the circular disc module has major advantages because it can cope with a higher SDI index. As a pretreatment only a sandfilter will be sufficient mostly.

Unit system in modular design :

• One staged till four staged Reverse Osmosis Systems / Nanofiltration Units for Waste Water Applications
• Recoveries up to 90 % according the limits of WHG (German Water Treatment Act)

Type	Descriptions	Pressure
Raw Water Stage	Revere Osmosis Stage with CD - Modules	70 bar	UO I
Permeate Stage	Reverse Osmosis with Spiral Wound Modules	70 bar	UO II
Concentrate Stage	Reverse Osmosis with High Pressure CD Modules	140 bar	HD-UO
Nanofiltration Stage	Nanofiltration with CD - Modules	40 bar	NF