Table of Contents

▪ Pretreatment Process and Advantages

▪ Passive Screen

▪ Micro Screen MTSM

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Customized water intake solutions from GEIGER® - JOHNSON SCREENS® - PASSAVANT®

The raw water flows by gravity through the inlet (front plate) into the drum. The raw water passes

through the screening mesh leaving the intercepted solids on the inner surface of the screen baskets.

The drum starts moving by a pre-adjustable water level difference of approximately 80 mm between

inside and outside of the drum. Detected by ultrasonic sensors. The difference is a sign for overloading

basket surface.

The drum start rotating. The baskets passes the cleaning device on top of the drum. The rinsing water

and washed out solids is flushing in trough and tube trough the back side plate

Cleaned baskets improve the filtration. The water level difference reduce under 80 mm. By reducing of

the water level difference stops the rotation of the drum.

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Customized water intake solutions from GEIGER® - JOHNSON SCREENS® - PASSAVANT®

Micro Screen MTSM - Operation principle

1. Raw water inlet 6. Spraying Device

2. Inlet Penstock 7. Waste Water Trough

3. Drive 8. Waste Water Discharge

4. Cover 9. Overflow

5. Screening Baskets 10. Clear Water Discharge

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Customized water intake solutions from GEIGER® - JOHNSON SCREENS® - PASSAVANT®

Micro Screen MTSM - Operation principle

Fine screening in the range from

5 – 250 µm

Highest flow rate because of

optimal specific capacity and

maximum screening surface

Minimal pressure drop (20 – 30 cm)

Easy to handle

Minimum operation cost (current

and spray water, spare parts)

Minimum maintenance

Long service life

Long time of experience

Cover Ultrasonic

measurement

Head

plate

Spray

water pipe

Trough

Micro Screen MTSM – General Advantages

Customized water intake solutions from GEIGER® - JOHNSON SCREENS® - PASSAVANT®

© 2014 All rights reserved to Bilfinger Water Technologies. No information contained in the presentation is allowed to be copied without the approval of Bilfinger Water Technologies page 21

Maximum surface

Single mounting baskets

Direct drive with drive toothed rim

Solid construction

Minimal power consumption

And can be supplied with integrated

screenings conveyor in a flanked

steel tank

Micro Screen MTSM – Special Advantages

Customized water intake solutions from GEIGER® - JOHNSON SCREENS® - PASSAVANT®

© 2014 All rights reserved to Bilfinger Water Technologies. No information contained in the presentation is allowed to be copied without the approval of Bilfinger Water Technologies page 22

Design: Curved basket

Standard length: 1,000 mm and 1,500 mm

Screen surface area: 0.42 m² and 0.7 m²

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Customized water intake solutions from GEIGER® - JOHNSON SCREENS® - PASSAVANT®

Micro Screen MTSM – Installation example

Bodensee Water Works - 12 plants 4000 x 4500

© 2014 All rights reserved to Bilfinger Water Technologies. No information contained in the presentation is allowed to be copied without the approval of Bilfinger Water Technologies page 24

Customized water intake solutions from GEIGER® - JOHNSON SCREENS® - PASSAVANT®

Micro Screen MTSM - Installation example