Research
Ideas we are developing, from first concept to tools used on site every day. Most of them start with MDP.
Concept
Early ideas and designs
MDP for green roofs
Drainage, water storage and rainwater reuse on thin-layer green roofs.
A smart eco plant pot
MDP filtration and natural evaporation for water-saving watering.
Slope drainage and landslide prevention
Keeping groundwater down on Hong Kong's slopes during heavy rain.
Watering from below: subsurface irrigation with MDP
Delivering water straight to the roots, with less lost to evaporation and runoff.
From desert to oasis
Storing rainwater and irrigating in the desert with MDP.
Testing
Built, tested or trialled
MDP manufacturing and research, 2021–23
What we learned making MDP from 3D prints, stainless steel, acrylic and steel.
Why drains clog, and how MDP keeps flowing
What goes wrong with conventional subsurface drains, and what MDP is designed to do differently.
Dewatering silt and sludge with MDP
Separating water from dredged silt and sludge, simply and continuously.
In use
Working on site today
An improved underwater welding handle
Cheaper, tougher and easier to use, and now the standard design in Hong Kong's commercial diving industry.
The Multipurpose Drain Pipe (MDP)
A new structural design for drainage and filtration that resists clogging.
MDP patent certificate
Hong Kong short-term patent HK1160345.
MDP for green roofs
Drainage, water storage and rainwater reuse on thin-layer green roofs.
A smart eco plant pot
MDP filtration and natural evaporation for water-saving watering.
Slope drainage and landslide prevention
Keeping groundwater down on Hong Kong's slopes during heavy rain.
Watering from below: subsurface irrigation with MDP
Delivering water straight to the roots, with less lost to evaporation and runoff.
From desert to oasis
Storing rainwater and irrigating in the desert with MDP.
MDP manufacturing and research, 2021–23
What we learned making MDP from 3D prints, stainless steel, acrylic and steel.
Why drains clog, and how MDP keeps flowing
What goes wrong with conventional subsurface drains, and what MDP is designed to do differently.
Dewatering silt and sludge with MDP
Separating water from dredged silt and sludge, simply and continuously.
An improved underwater welding handle
Cheaper, tougher and easier to use, and now the standard design in Hong Kong's commercial diving industry.
The Multipurpose Drain Pipe (MDP)
A new structural design for drainage and filtration that resists clogging.
MDP patent certificate
Hong Kong short-term patent HK1160345.