ROMAG AG Combined Sewer Overflow Screens for Overflow Structures

ROMAG specialises in the development and manufacture of screens for overflow structures. In times of excessive rainfall or storms, where do the contaminated solids present in the water go: on the ground or in the sewage treatment plant? Is it a question of expenditure, i.e. investment, or a question of choosing the right solution? ROMAG’s high-performance combined sewer overflow (CSO) screen system presented here is a low-cost, efficient solution. It is a system where all requirements can be met by a diverse variety of types of construction and sizes with one modular basic structure.

How was this solution devised? When the Swiss Federal Office of the Environment, Forests and Landscape (FOEFL) investigated the question of CSO and SSO works, it quickly became clear that use of a CSO screen is far more efficient and environmentally friendly than constructing large catch basins. It simply required further development of screening technology.

COMBINED SEWER OVERFLOW (CSO) SCREENS

ROMAG, one of the invited companies, was interested and it has committed itself fully to this technology ever since. By late 2001, more than 600 ROMAG CSO screens had already been installed in various countries. Today, ROMAG is one of the world’s leading companies in CSO technology.

Experience is necessary when selecting the right solution. And this is where ROMAG’s services shift into gear. Always on the lookout for new solutions, today ROMAG is a competent partner and advisor for the entire sector of water technology.

REDUCING CONTAMINATION WITH CSO SCREENS

Basically, the effluent or sewage flows from the discharge culvert through the CSO screen into the relief sewer. The contamination retained in the CSO screen is cleared by a combing movement so that it is pushed with the sewage or effluent to the sewage treatment plant. The shape of the comb rungs is very important in this respect.

Depending on the type of works, the effluent or sewage flows horizontally, from top to bottom or from bottom to top, through the CSO screen. It is important that operational reliability is ensured with virtually low maintenance. A controlled weir wicket (Type RSW-K) is available for screens through which effluent or sewage flows horizontally. Type RSW is the most frequently used type of screen. This allows throughput to be rendered, dependent on the volume occurring and also allows conclusions to be drawn as regards the quantity relieved.

CSO SCREENS = LOWER INVESTMENT

It is certainly interesting that the responsible Swiss Federal Agency has often halved the prescribed storage capacity per unit of drainage area in the catchment area when using a CSO screen. CSO screens are used almost everywhere today for new projects, dispensing with the need for complex and expensive structures for catch basins. Existing installations can be renovated very economically by installing a CSO screen. One important argument is certainly that no additional building area needs to be created for such projects. Thus,
the required investments for new or existing installations are far lower when using CSO screens.

CSO PROJECT EXPERIENCE

Owing to the large number of projects implemented, ROMAG has a wealth of experience. The rugged design of the CSO screens, installation of all control elements in a dry chamber and operation of the moving parts by hydraulic cylinders mean that this CSO works requires virtually low maintenance. It is recommended to conduct a monthly visual inspection and verifications after exceptional rainfalls. This has also proven the best policy in practice. Reference lists are available.

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Press Release

ROMAG Switzerland Changes Name to ROMAG aquacare

ROMAG Pipes and Machines of Switzerland, a worldwide-known name in CSO markets, has changed its name. We discontinued the manufacture spiral-welded pipes made of steel as early as 1999 and restricted ourselves to dealing with pipes of special areas. In 2009, we also gave up dealing in steel and P

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ROMAG AG

aquacare AG

Environmental Division

CH-3186 Düdingen

Haltaweg 3

Other

Switzerland

+41 26 492 6500 +41 26 492 6565 www.romag.ch

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Press Release

26th October 2010

ROMAG Pipes and Machines of Switzerland, a worldwide-known name in CSO markets, has changed its name. We discontinued the manufacture spiral-welded pipes made of steel as early as 1999 and restricted ourselves to dealing with pipes of special areas. In 2009, we also gave up dealing in steel and P

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Regional Offices

ROMAG AG

aquacare AG

Environmental Division

CH-3186 Düdingen

Haltaweg 3

Other

Switzerland

+41 26 492 6500 +41 26 492 6565 www.romag.ch
Australia, New Zealand, Singapore

VOR Environmental Aust Pty

163 Victoria Road

2023 Sydney

Bellevue Hill

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+61 293 87 68 80
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PWL Anlagentechnik

Handelsgesellschaft mbH

A-4820 Bad Ischl

Wiesingerstrasse 8

Other

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+43 6132 27 3840 +43 6132 27 38413
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Jones & Attwood Limited

Titan Works, Stourbridge

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Stourbridge

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+44 1384 392 181 +44 1384 371 937
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PARKSON - Hycor Corporation

29850 North Skokie HWY (U.S. 41)

IL 60044-1192

Lake Bluff

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+1 847 4733 700 +1 847 4730 477 www.parkson.com
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Tomoe Engineering Co. Ltd.

Daini Maruzen Building

Chuo-Ku

9-2, Nihonbashi 3-Chome

J-Tokyo

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+81 332 714 092 +81 332 742 897 www.tomo-e.co.jp
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Quilton Sociedad Anonima

Amezti, 6-2

48990 Getxo

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+34 94 49 10 166 +34 94 46 07 647
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Techniques des Fluides et de l'Environnement

Groupe UFT

11, route de Grendelbruch

Dr. H. Brombach GmbH

BP 67F-67560 Rosheim

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+33 388 50 44 85 +33 388 50 75 51 www.uft-france.com
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UFT - Umwelt- und Fluid-Technik

Dr. H. Brombach GmbH

D-97980 Bad Mergentheim

Steinstrasse 7

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Germany

+49 7931 97 10 0 +49 7931 97 10 40 www.uft-brombach.de
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BioBalance A/S

Vallensbaekvej 45

2605 Brondby

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Denmark

+45 43 44 33 22 +45 43 44 33 21

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