Mogden Expansion ?
Browsing through the latest Heathrow consultation stuff, I was surprised to come across"As shown in Figure 227, the majority of Heathrow’s wastewater, fromthe T5, CTA, east side and Northern Apron Zone (NAZ) catchments, isdischarged to the Bath Road Sewer to the north of the existing airportcampus. The remainder, from the cargo and T4 catchments, is discharged toa sewer south of the airport. Both sewers convey flows to Mogden WWTW.Thames Water have advised that that the Bath Road Sewer is currentlyoperating at its full capacity, and consequently no additional flows can bedirected to it unless measures are taken to reduce the current demand orincrease the capacity. Mogden WWTW is also at its maximum capacity andis unable to treat additional wastewater flows without an upgrade to theexisting treatment facilities."and"Any increase in capacity will involve investment in new treatment and network infrastructure and the upgrade of existing facilities. Following engagement with Thames Water and development of other components, three options for providing the additional wastewater treatment capacity required for the expanded airport were identified:• Option 1: Upgrade the existing treatment facilities at Mogden WWTW in west London;• Option 2: Upgrade the existing treatment facilities local to the airport and divert some or all flows to this treatment location;• Option 3: Construct a new WWTW local to the airport to treat some, or all the flows from the expanded airport and surrounding communities.The final solution could also involve a combination of these options. Options 1 & 2 are reliant on feasibility study and evaluation by Thames Water. Heathrow will continue to work closely with Thames Water to develop these options."They have a couple of sites in mind for the new Option 3 sewage works - one near Harmondsworth or another on Mayfield Farm close to Bedfont Lakes (though that site has also been suggested as a possibility for the replacement Immigration Removal Centre)
Tim Henderson ● 2765d0 Comments