Reservoir Lining Systems

Reservoirs can be used to hold almost any type of liquid so the lining systems must be resistant to all of the chemicals that are likely to come into contact with it.

As most reservoir applications make protecting the liner difficult, strong liners / lining systems that are resistant to ultraviolet light (UV) and ozone are required. They must also be able to deal with the full range of ambient (and liquid) temperatures is required.

Reservoir Engineering & Construction: Lining Details

Special attention is paid to how and where the liners are fixed to the reservoir structures and how through liner pipes are sealed.

Reservoir Roofs

Potable water reservoirs require a roof structure to prevent leakage into the reservoir. This roof needs waterproofing and a membrane may be installed over the concrete surface. Usually the underground reservoir roof will be landscaped in order that it blends into the surrounding environment.

Reservoir Roof Illustration — Typical Cross Section Diagram

Reservoir Covers

Many reservoirs are covered to prevent rain water or wind blown debris contaminating the stored liquids. Covers also prevent evaporation. Reservoir covers need to be strong and flexible as well as having the correct chemical resistances so reinforced materials are normally used. Reservoir covers float on top of the stored liquid and have facilities for rain water removal. Floats are used to ensure the cover is held in the correct position.

Image top right: Reservoir roof at Ormsby Water Treatment Works Image left: Floating cover for retention pond

Reservoir Routing Vertical (Baffle) Curtains

Some reservoirs are fitted with vertical curtains to ensure the correct flow of liquid through the reservoir. Curtains are manufactured from robust materials that can last a long period fully submerged. Each curtain is designed to suit the particular requirement.

Butyl Products Ltd. has over 40 years experience of supplying and installing reservoir curtains. Image right: Baffle curtain and internal expansion joints at Stanborough Reservoir

Butyl Products Ltd