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Geotechnical Materials - Landfill Products

Landfill Bore Hole Lining Systems - Stuart Well Services is able to supply a range of well-linings for site investigations, dewatering wells, leachate abstraction wells, water abstraction wells, soakaways and gas abstraction wells.

All materials are manufactured to meet the requirements of ISO9001:1994 by JAIN IRRIGATION SYSTEMS LIMITED. Pipes are male-female threaded in lengths of 1 and 3 metres.

• Manufactured from high density Polyethylene (HDPE)

• High temperature resistance

• Vicat softening point 125^º ISO R 306 (B)

• Resistant to aggressive chemical found in landfill sites

• High strength, tough and durable

• Threaded without reducing wall thickness giving maximum strength of joint with rapid assembly - flush joints also available

• Metric sizes to suit all horizontal pipework

• Manufactured to DIN 8074

• Landfill site proven for over 10 years

Outside Diameter (mm)	Inside Diameter (mm)	Weight (kg/m)
40	28	1.05
63	51.4	1.05
90	73.6	2.12
110	97.4	2.08
160	141.8	4.35

Other dimensions and wall thickness are available on request up to 630mm diameter.

Slot sizes 1 or 2mm standard

Methane Gas Venting Stacks

• Methane gas venting is actively undertaken by the installation of gas venting stacks which will rotate in wind speeds as low as three kilometres per hour

 

• Ventilation rates in excess of 1500 litres per minute are typically achieved with average wind speed of 16 kilometres per hour

 

• The rotating cowl is available in two sizes, one suitable for pipes up to 150mm diameter (model no. RC150) and for pipes up to 200mm (model no. RC200 - see table below)

 

Cowl Number	RC150	RC200
Pipe Size (mm)	70 - 150	150 - 200
Venting Capacity (l.p.m, max)	1500	2800
Sample Port (mm)	25	25
Sleeve Length (mm)	3500	3500
Cage Size (HWD mm)	360 x 380 x 380	360 x 380 x 380
Lugs (mm)	400	400

Flux boxes - monitoring landfill gas surface emissions

The objective of a flux box survey is to quantify the total releases of methane from the surveyed area. This may identify places where the gas flux through the cap exceeds an emission standard set by the regulator and so will initiate further remedial work for IPPC compliance.

A passive flux box consists of an enclosure of known volume with two ports fitted to the upper surface.

The inlet port is used for pressure equilibration and the outlet port for removing samples.

This arrangement facilitates the sampling of gases without disturbing the pressure within the box.

The methane concentration inside the box is analysed using a gas analyser (not supplied).

The passive flux box is manufactured from white polyethylene to reduce thermal differentials between the inside and outside of the box in warm weather.

The box is lightweight (less than 8 kg) and easy for site personnel to carry a set around.

A lip is present around the base of the box making the flux box robust and durable with the additional benefit that a weight can be placed on the box to increase sealing - in simple terms you can sit on it! Further information can be found at the Environment Agency website.

 

Email Us or call 01953 454540 for more information