Water Supply

For over 40 years, Microza® has been used in water supply applications at facilities of various sizes and regions worldwide, meeting diverse water treatment needs. Its durability and reliability, backed by years of technology and experience, provide strong support to customers.

To maintain high-quality and safe water, it is essential to remove protozoa such as Cryptosporidium, eliminate bacteria, and reduce turbidity.

Microza® provides hollow fiber technology with a uniform and sharp pore size distribution through a unique membrane formation method. This enables effective removal of harmful microorganisms such as Cryptosporidium and causes of turbidity. In addition, Microza® PVDF membranes use the proprietary TIPS method, offering high filtration stability, filtration speed, and excellent chemical resistance. This ensures stable filtered water quality over the long term.

In conventional coagulation-sedimentation plus sand filtration methods, operators must adjust coagulant dosing according to raw water quality, and coagulants generate sludge, requiring additional effort and cost for disposal. Especially with relatively high turbidity raw water, treatment complexity increases and coagulant usage tends to rise.

With Microza® membrane filtration solutions, it is possible to achieve favorable water quality without coagulant use depending on raw water conditions. Coagulant usage can be significantly reduced. For relatively turbid raw water, submerged membrane filtration is advantageous, allowing stable treatment with minimal sludge generation. As a result, the effort and cost associated with sludge treatment are reduced, operational burden is lightened, and more efficient water purification is achieved.

In water supply operations, it may be necessary to review water treatment plant capacity due to future demand fluctuations or facility aging. However, conventional treatment methods require major design changes, resulting in high costs and long construction periods.

Microza® membrane filtration solutions offer a promising approach to solving these issues. Membrane systems allow for easier design modifications compared to conventional methods. Furthermore, by adopting container-type systems, treatment capacity can be temporarily increased or removed as needed. This enables rapid response to emergencies or seasonal demand fluctuations. These systems have also been utilized during disasters as emergency water purification units when municipal water services are suspended.

Conventional coagulation-sedimentation plus sand filtration methods require multiple processes, such as chemical mixing and sedimentation tanks and large sand filtration equipment, necessitating large sites and complex facilities.

Microza® membrane filtration solutions offer an effective alternative to these challenges. As no large-scale sedimentation or filtration equipment is needed, impurities can be removed efficiently with fewer processes, significantly reducing installation area requirements.

Long-term operation requires cleaning to restore and maintain filtration performance. For example, if the membrane becomes clogged, if the raw water has a high organic content, or if it contains high levels of scale-forming components such as iron or manganese, strong chemical cleaning is needed to restore performance. However, if membranes with insufficient chemical resistance are used, damage such as fiber breakage accumulates with each cleaning, resulting in shorter membrane life and more frequent replacement.

Microza® addresses this issue. Its excellent chemical resistance minimizes damage to the membrane body even after repeated chemical cleaning. This high durability extends the replacement cycle and significantly reduces replacement costs.

Microza® leverages nearly 50 years of membrane filtration technology and extensive operational data to propose optimal system designs. We evaluate not only membranes and equipment but also the entire process, achieving both cost reduction and performance improvement. Our accumulated expertise enables us to quickly provide optimal solutions tailored to site requirements and offer comprehensive post-installation support.