Replacing inge® with inge®

The inge® ultrafiltration modules (UF) at Beijing Airport have been running successfully for 10 years, and are now being replaced – not due to technical necessity, but because the operator is required to apply stricter standards under a new directive issued by the Beijing Water Affairs Bureau.

The idea behind it

When the Olympic Games were held in Beijing in 2008, the organisers came up with the theme, “Green Olympics”. Their goal was to encourage the country to achieve better environmental protection, conserve natural resources and maintain the ecological balance. Consuming less water and implementing water recycling strategies were one of the core components of a campaign to make the Chinese capital eco-friendlier.

One of the projects ran under the Green Olympics banner – and also launched in 2008 – was the Capital Airport Aviation Purification Station at Terminal T3 of Beijing Capital International Airport (BCIA). The plant was designed to purify and treat both the waste water from T3 and the municipal waste water from the Shunyi district, making the recycled water available not only for cooling systems, but also for cleaning hotel facilities, irrigating green spaces and topping up local water features. The goal was to reduce water consumption over a 10-year period, if running at full capacity, by an amount equivalent to nine times the size of Kunming Lake* – that is somewhere in the region of 18 million tons of water.

First installed in 2009 as one of the projects for Beijing’s Green Olympics 2008

Launched in 2008 as part of preparations for the Olympic Games, the new domestic waste water treatment process was up and running by 2009. After passing through conventional physical and biological pre-treatment stages, the water undergoes ultrafiltration (UF) to remove particles, bacteria and viruses and reverse osmosis (RO) for desalination. Half of the purified water is then used as supplementary water (e.g. for cleaning processes) while the other half is either used to irrigate green spaces or pumped directly into bodies of water, including the nearby river inge® UF in action. In the initial installation project described above, the Capital Airport opted for inge® UF modules equipped with sturdy and robust Multibore® membranes. Seven capillaries embedded in a foam support structure remove suspended solids, bacteria and even viruses from the water. The tiny pores in their filter surface – each of which measures just 20 nanometers across – produce clean water thanks to this patented German technology. For the past 10 years, three filtration lines – each containing 64 dizzer® 5000plus WR modules – have produced a combined total of 600 m³ of purified water an hour forwarding it to the next stage for desalination.

The replacement

Following ten years of successful operation and huge savings in the amount of tap water used at the airport, the customer opted for the next generation of inge® UF modules to upgrade the technology in the existing plant at the end of 2018. There was no technical necessity to do this, but the Beijing Water Affairs Bureau had issued new regulations that required the airport to meet significantly stricter emission standards. The decision to use next-generation inge® UF modules for the upgrade clearly underlines the customer’s continuing enthusiasm for Germanmade Multibore® technology.

And inge GmbH is proud to be able to continue its partnership with the Capital Airport. Replacing the old inge® UF modules with next-generation inge® UF modules provides the perfect basis for saving lots of tons of water over the next 10 years – and that’s a great decision for a better future.


* The lake at the Summer Palace in Beijing