Water and sludge treatment technologies to secure a clean water supply and environmental preservation are essential to social infrastructure. Previously, the technologies we developed were aimed at meeting environmental regulations, downsizing water and sludge treatment plants, and reducing waste sludge. Recently, we have been proactively tackling the development of energy saving and recycling technologies for low-carbon society.
PABIO TUBE® is a membrane diffuser with low pressure loss that boasts a higher oxygen transfer efficiency than conventional ceramics-based diffusers. As a result, the oxygen supply to the aeration tank of sewage treatment equipment consumes less energy, helping to curb CO2 emissions and thus global warming.
PABIO TUBE’s structure
Reduction in the necessary air volume
(rotational flow aeration)
Although a variety of membrane-type diffusers are currently available on the market, there have been a number of issues associated with their durability and pressure loss. We, too, have been confronted by challenges. However, taking full advantage of our experience and expertise, we created prototypes and executed numerous rounds of performance and durability testing. These endeavors resulted in a highly durable membrane diffuser boasting low pressure loss as well as high oxygen transfer efficiency.
The sewage treatment process takes advantage of microorganisms that feed on organic matter and play a key role in water purification.
Sludge, the waste derived from sewage treatment, mainly consists of the corpses of the microorganisms that proliferated during said treatment. Aware of the significant usefulness of sludge as a biomass resource, we are engaged in the development of technologies associated with biogas produced via the anaerobic digestion of sludge.
Among those technologies, our biogas upgrading system boasts the following distinctive strengths:
In the B-DASH Project led by the Ministry of Land, Infrastructure, Transport and Tourism (MLIT), we demonstrated efficient energy utilization technology that uses the energy-saving biogas upgrading system combined with high-solid anaerobic digestion at a municipal wastewater treatment plant (FY2018-2019).