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Water Intake Systems /

Screening Machinery

Water intake systems – mechanically water cleaning

Hubert is specialized in water intake systems, used for mechanically clean or screen water extracted from the sea, rivers or lakes.  Mechanical cleaning removes entrained (floating) matter with screens or sieves. This protects the downstream process stages from buildup, clogging and abrasion. The aim is to protect suction pumps and other downstream equipment such as desalination membranes, heat exchangers/ condenser tubes or from the carry-over of coarse and fine debris.

Water intake screening systems are used for filtering cooling water for power plants and process water for industrial production processes, like petrochemical plants & refineries.  Hubert’s intake screening machines also filter raw water for potable or drinking water plants, desalination plants, drainage channels, fire fighting channels, and irrigation offtakes. Other examples are food processing and mining.

Hubert- vertical drum screen

Water Intake Systems /

Screening Machinery

Water intake systems – mechanically water cleaning

Hubert is specialized in water intake systems, used for mechanically clean or screen water extracted from the sea, rivers or lakes.  Mechanical cleaning removes entrained (floating) matter with screens or sieves. This protects the downstream process stages from buildup, clogging and abrasion. The aim is to protect suction pumps and other downstream equipment such as desalination membranes, heat exchangers/ condenser tubes or from the carry-over of coarse and fine debris.

Water intake screening systems are used for filtering cooling water for power plants and process water for industrial production processes, like petrochemical plants & refineries.  Hubert’s intake screening machines also filter raw water for potable or drinking water plants, desalination plants, drainage channels, fire fighting channels, and irrigation offtakes. Other examples are food processing and mining.

Hubert- vertical drum screen

Separation of liquids from solids

Screening is a filtration process which separates liquids from solids. Solids can be defined as waste or debris and living creatures or matter in (intake) water, like fish (often cuttle & jellyfish), crustacans (for example mussels), eggs, larvae, plankton, etc.

Solids with relative large diameters are trapped in primary coarse screens. Finer secondary screens remove smaller residual materials. Measurement of the difference in water level between the front and the back of the screen determines the degree of contamination and initiates the cleaning of screens when necessary.

The filtrated water distributed to a plant’s downstream system is free from particles larger than the aperture (mesh opening) of the secondary screening step accomplished by drum screens or traveling band screens.

Hubert coarse screen - WISA

Separation of liquids from solids

Screening is a filtration process which separates liquids from solids. Solids can be defined as waste or debris and living creatures or matter in (intake) water, like fish (often cuttle & jellyfish), crustacans (for example mussels), eggs, larvae, plankton, etc.

Solids with relative large diameters are trapped in primary coarse screens. Finer secondary screens remove smaller residual materials. Measurement of the difference in water level between the front and the back of the screen determines the degree of contamination and initiates the cleaning of screens when necessary.

The filtrated water distributed to a plant’s downstream system is free from particles larger than the aperture (mesh opening) of the secondary screening step accomplished by drum screens or traveling band screens.

Hubert coarse screen - WISA

Lowest operating cost & fish friendly

Hubert’s solutions are environmentally-friendly and are used in both submerged passive water and open surface water intakes to deliver debris free water. In addition, our  systems can be supplied with a fish recovery system that allows trapped fish to be removed in a gentle and effective way.

The made to measure design of our screening systems allows for lowest operating and maintenance costs, including maximum performance & reliability, effective design, quality and particle-free filtered water. Our cathodic corrosion protection systems (based on ICCP, impressed current) stand for corrosion resistance and longer lifetimes in sea water.

You will find our projects in both new construction (EPC) projects and renovation & optimization of existing water intakes.

See also Markets & Applications

Hubert Water Intake Drum Screen

Lowest operating cost & fish friendly

Hubert’s solutions are environmentally-friendly and are used in both submerged passive water and open surface water intakes to deliver debris free water. In addition, our  systems can be supplied with a fish recovery system that allows trapped fish to be removed in a gentle and effective way.

The made to measure design of our screening systems allows for lowest operating and maintenance costs, including maximum performance & reliability, effective design, quality and particle-free filtered water. Our cathodic corrosion protection systems (based on ICCP, impressed current) stand for corrosion resistance and longer lifetimes in sea water.

You will find our projects in both new construction (EPC) projects and renovation & optimization of existing water intakes.

See also Markets & Applications

Hubert Water Intake Drum Screen

Typical layout of a water intake ‘screening train’

Hubert water intake system, in other words:  ‘screening train’

Hubert designs, manufactures and supplies complete water intake ‘screening trains’, including derived equipment and controls. An average ‘train’ consist of:

Step 1: stop log or sluice gate – closing chanel inlet for maintenance (downstream)
Step 2: coarse screens, static & cable hold & revolving screens – primary-filtration
Step 3: rotary drum screen and / or travelling band screen – secondary / fine filtration
Step 4:  stop log or sluice gate – closing chanel exit for maintenance (upstream)

Below you will find an explanation of frequent applied subsystems. Visit also our pages Case Studies and Downloads.

Hubert water intake screening train
Hubert water intake screening train

Hubert water intake system, in other words:  ‘screening train’

Hubert designs, manufactures and supplies complete water intake ‘screening trains’, including derived equipment and controls. An average ‘train’ consist of:

Step 1: stop log or sluice gate – closing chanel inlet for maintenance (downstream)
Step 2: coarse screens, static & cable hold & revolving screens – primary-filtration
Step 3: rotary drum screen and / or travelling band screen – secondary / fine filtration
Step 4:  stop log or sluice gate – closing chanel exit for maintenance (upstream)

Below you will find an explanation of frequent applied subsystems. Visit also our pages Case Studies and Downloads.

Hubert water intake screening train
Hubert water intake screening train

Stoplog & Sluice Gate

Hubert stoplogs: rapid & secure closure of chanels & pump chambers in a water intake system

A Hubert stoplog (also called ‘stop gate’ or ‘penstock’) and sluice gate makes periodic inspection and maintenance of screening systems and pumps possible by dewatering the separated part of the chanel. Our stoplogs are designed as per client’s specifications.

Hubert stoplog

Stoplog & Sluice Gate

Hubert stoplogs: rapid & secure closure of chanels & pump chambers in a water intake system

A Hubert stoplog (also called ‘stop gate’ or ‘penstock’) and sluice gate makes periodic inspection and maintenance of screening systems and pumps possible by dewatering the separated part of the chanel. Our stoplogs are designed as per client’s specifications.

Hubert stoplog

Coarse Screen

A Hubert coarse screen is a primary filtration screening system as part of a water intake system

This type of screen or rack is the first barrier in a screening system and is intended to withstand and remove all large to relatively small contamination. Debris can be natural (like seaweed and jelly fish, or man-made (plastic, etc. )

It is often a robust static bar rack with or without an automated trash rake system per screen or for several screens next to each other. Hubert supplies various coarse screens tailored to every (local) situation. Examples are static bar screens, revolving coarse screens or rotating rake screens and cable operated bar screens.

Hubert trash rake coarse screen

Coarse Screen

A Hubert coarse screen is a primary filtration screening system as part of a water intake system

This type of screen or rack is the first barrier in a screening system and is intended to withstand and remove all large to relatively small contamination. Debris can be natural (like seaweed and jelly fish, or man-made (plastic, etc. )

It is often a robust static bar rack with or without an automated trash rake system per screen or for several screens next to each other. Hubert supplies various coarse screens tailored to every (local) situation. Examples are static bar screens, revolving coarse screens or rotating rake screens and cable operated bar screens.

Hubert trash rake coarse screen

Drum Screen

A Hubert drum screen is used for large flow rates at a relatively fine filtration degree

A drum screen is a self-cleaning fully automatic screen suitable to filter very large flow rates at a relatively fine (secondary) filtration degree. Regularly occurring flow rates are between 40.000 and 120.000 m3/h per screen, depending on customer requirements and the local situation at the intake. Woven mesh with a diameter of about 2-3 mm is used as filter medium. We recognize vertical and horizontal drum screen applications. This movie gives an impression of a vertical drum screen during assembly.

ubert drum screen vertical

Drum Screen

A Hubert drum screen is used for large flow rates at a relatively fine filtration degree

A drum screen is a self-cleaning fully automatic screen suitable to filter very large flow rates at a relatively fine (secondary) filtration degree. Regularly occurring flow rates are between 40.000 and 120.000 m3/h per screen, depending on customer requirements and the local situation at the intake. Woven mesh with a diameter of about 2-3 mm is used as filter medium. We recognize vertical and horizontal drum screen applications. This movie gives an impression of a vertical drum screen during assembly.

ubert drum screen vertical

Travelling Band Screen

A Hubert travelling band screen is a compact solution designed for fine filtration

A travelling band screen, also called ‘travelling water screen’ is designed for fine (secondary) filtration of surface water. A traveling band screen requires only a small installation area due to the compact vertical construction. This type of screen is used in places where the construction area of the total cleaning installation is limited or where big differences occur between high and low water levels.

ubert drum screen vertical

Travelling Band Screen

A Hubert travelling band screen is a compact solution designed for fine filtration

A travelling band screen, also called ‘travelling water screen’ is designed for fine (secondary) filtration of surface water. A traveling band screen requires only a small installation area due to the compact vertical construction. This type of screen is used in places where the construction area of the total cleaning installation is limited or where big differences occur between high and low water levels.

ubert drum screen vertical

Customer Stories

Project Replacement of gutter and clearing bridge settling tank at WWTP Birdaard

The elaboration of the drawings with accompanying calculations in the preparation phase were well worked out. The construction of the new gutter and bridge was installed satisfactorily by employees and especially the foreman. The project was completed on time, both financially and in the delivery of product certificates and revision. A great project and end result was achieved through synergy between client and contractor.

Wetterskip Fryslan, Netherlands, mr. R.T. van der Zee, Design coordinator - Director

Hubert: in-house design, engineering and manufacturing!

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