Water Recycling

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Microza responds to various challenges in the Water Recycling application

Water needs to be saved by reducing
the discharge of sewage / industrial wastewater.

Difficulty finding how to reduce
the use of water in the factory

Lack of knowledge on
what wastewater can berecycled

Wastewater discharge regulations are strict, requiring improvement,but knowledge of its method is lacking

Discharge regulations on
must be met.

Discharge regulations on phosphorus and nitrogen
must be met.

Biological treatment is unstable.

Oil components need to be detected to protect the membrane.

Seawater should be desalinated
to use as industrial water.

Need financial service for system introduction

Why Microza?

Stability, filtration rate, and chemical resistance

Manufactured by thermal-induced phase separation (TIPS), an original method, Microza’s hollow fibers demonstrate:High stability,High filtration rate and High chemical resistance.Especially high chemical resistance is required when the concentration of organic substances or scale components, such as iron and manganese, in the raw water is high.

Know-hows for designing an optimum system

Based on membrane filtration technology and operation data accumulated over 50 years, we can provide support services in designing a system optimum for each customer.

Differences from otehr technologies

Microza filtration membrane is highly durable as it is manufactured using an original method.
We can propose a product/service optimum for each customer, which has the optimum filtration rate and membrane service life and matches the project background.

An original method

  • The injection volume of the flocculant needs to be adjusted
    by an operator to suit the conditions and quality of raw water.
  • Sludge is generated by the injection of flocculant
    and needs to be treated as industrial waste.

Membrane filtration

  • Better water quality can be achieved without injecting flocculantdepending on the actual quality of raw water.
  • Membrane filtration with immersion membrane is favorable for raw water of relatively high turbidity.

Technical supports

roposing optimum system

roposing optimum system

The design of the membrane filtration system greatly varies depending on the kind and quality of raw water. We propose an optimum system based on provided plant design conditions. If you will use Microza in the pretreatment of reverse osmosis (RO) membrane filtration, we can also propose an optimum system design package that also covers RO. Please feel free to contact us.

Advice on operation

Advice on operation

Operation conditions need to be revised when the property of raw water changes or when the conditions of raw water need to be altered after the start of operation. We can propose optimum operation conditions, including frequency of chemical washing, chemicals to use, and their concentration. If you have difficulty or are facing trouble operating your existing membrane filtration system from another manufacturer, you can also consult us, including the use of products other than ours.

Deterioration inspections

Deterioration inspections

The life of the membrane varies greatly depending on the actual operating states. Deterioration of membrane differs between plants that operate at 100% and 50% capacity all year round. We diagnose the degree of deterioration of membrane filtration and assess membrane life based on existing operation state records, membrane analysis, and our know-how cultivated over years.

Analysis of membrane

Analysis of membrane

We can diagnose the degree of membrane deterioration and propose revised chemical washing conditions by analyzing the membrane used in your plant.

Our products

These Microza modules are being employed in over 2,000 purification plants in the world and treating over 2.2 million m3/day of water in total. Characterized by high performance and long life, the products are playing an active part in tap water purification and pretreatment of RO membrane filtration for purifying industrial water and recycling wastewater.

Microza UF PVDF module (UNA series)

Microza UF PVDF membrane immersion type (UHS series)

The flow of our support

Consultation on conditions and purpose of use

We’ll have a preparatory meeting to find out what input conditions are needed to suit your purpose.


We propose a solution(s) for your purpose or problem.


We conclude contracts on necessary products and/or services.

After-sales service

We provide support services for optimizing your operation via operation monitoring and operational optimization.


What conditions are necessary for designing a membrane filtration system?

Data on the kind, amount, and quality of the raw water and a draft of the system structure are necessary. Water quality includes minimum water temperature, turbidity, and contents of organic substances (COD and TOC) and inorganic substances such as iron and manganese. After deciding the assumed life of the membrane and whether a standby system is needed or not, we will be able to propose a system.

How long does the membrane last?

For water purification purposes, we have operation records of 10 to 15 years, although the value varies depending on the kind of raw water and actual operation states. We can design and propose a system that most answers your request on membrane service life (although the feasibility varies depending on conditions).

How much flocculant can we add?

The amount varies depending on water quality and the type of flocculant. Please contact us for details from this web page.

What are the conditions of chemical washing?

They differ depending on the conditions of raw water, operation states in the past, and loads of water quality. Please contact us from this web page, and we will make a proposal based on the operation state.