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We have a good track record for tailoring solutions to ensure contact times are maximised and sediment deposits minimised.

Baffle curtains help assist water around which reduce ‘dead zones’ and prevents water stagnation.

Indicative Baffle Curtain Arrangement

Diagram key

  1. Input of treated water
  2. Baffle Curtains
  3. Door installed for baffle curtain maintenance
  4. Serpentine path followed by water to reservoirs output installations
  5. Output supply

The curtains comprise of small modular sections that are fabricated off site for easy assembly within the reservoir. Each module is fabricated to specific dimensions using hot air/wedge welding techniques and incorporates both a bottom and top pocket running horizontally and a vertical pocket at one end.

Method of installation

Prior to the curtains being installed, holes are drilled into the floor and soffit of the reservoir. Mechanical sockets are inserted and stainless eyebolts are secured into place. In the event that mechanical sockets are not suitable, then a WRAS approved resin will be used to secure the eyebolt/bracket.

Each module are placed beneath the prepared area of installation; WRAS approved UPVC pipes are inserted into both the bottom and top pockets ensuring that the pipes are continuous by using joining couplers. At each end of the pipes end caps are fixed.

The curtain is connected to the floor using preformed stainless brackets which fit over the bottom pipe and are secured to the floor with nut and bolt. Tensioning straps are installed through the eyebolt in the soffit and placed through an opening in the top pocket, finally being secured around the pipe and tensioned.

The curtain is fixed (see “Typical Detail 1”) to the wall at one end using stainless bar and fixings with a pull out tube secured behind.

At the opposite end the curtain finishes short of the wall; this is known as the free end and is connected to the soffit and floor eyebolt using a straining wire which passes through the vertical pocket and is tensioned using an adjustable rigging screw.

WLS provide highly qualified technicians to assist and supervisor project installations throughout the UK, Europe & The Middle East

The products being used for the baffle curtain construction are approved through the Drinking Water Inspectorate (DWI). All materials are tested to ensure that they are fit for use in drinking water supply. The test involves weeks and months of laboratory checks which include Taste & odour, microorganism growth test along with leachate testing.

The UK testing regime is recognised and adopted by most water authorities in The Middle East, including Oman, Qatar & Jordan. Leading Consulting Engineers have used the UK specification when designing baffle curtains into newly built tanks.

Material Components

BAFFLE CURTAIN MATERIAL: Flagon GeoP/AT 1.5mm or 2mm thick TPO
SOFFIT & FLOOR ANCHORS: HKD-DR 316 stainless steel
EYEBOLT 10MM/30MM: 316 stainless steel
BAFFLE CURTAIN STRAP: Polypropylene webbing/ stainless steel buckle
BAFFLE TUBE PIPE: Class E UPVC pipe 1.1/4” & 1.1/2”
WALL BATTEN: 316 stainless steel 30mm x 5mm or 6mm thick polypropylene bar
WALL FIXINGS: 8mm HAS through bolts 316 stainless steel
STRAINING WIRE: 5mm 316 stainless steel with 316 stainless wire rope grips

Project photos

Case Studies

The following projects involved Baffle Curtains

Out with the old, in with the new

Out with the old, in with the new

Removal of old baffle curtains and installation of new Reg 31 approved curtains for a service reservoir tank. Due to a bad state of repair, an underground concrete structure required the old baffle curtains to be removed along with repairs to existing stainless 316L baffle plate and the Installation of Reg 31 approved flexible membrane to improve contact time.

Waterlines to the rescue

Waterlines to the rescue

Service reservoir tank required essential refurbishment due to bacterial failures. Installation of Reg 31 approved flexible membrane to concrete surfaces, baffle walls and columns within the tank was needed to return the tank to service.

Jordan DISI Water Project

Jordan DISI Water Project

To improve water circulation: Baffle Curtains were prefabricated off site into manageable sizes. The baffles were fixed between the concrete columns and tensioned with flexible straps.