- Water purification
- Separation technology
Microza has already been installed in several water purification plants and factories throughout the world and is receiving a top-class reputation from users.
Membrane filtration is increasingly deployed in plants, substituting conventional coagulating sedimentation filtration plants, to improve water quality, remove protozoan such as Cryptosporidium, reduce maintenance labor, and save space.
Microza responds to various challenges in the Tap water application
Reduce the consumption of flocculant
Reduce the generation of water treatment sludge
Revise the the capacity of the water purification plant
Improve the quality of tap water
Maintain the desired flow
Reduce membrane replacement costs
Introduce an emergency water purification system for restoring water supply during a disaster
Reduce the consumption of flocculant and want to reduce the generation of water treatment sludge
In conventional systems, the injection volume of flocculant needs to be adjusted by an operator. Also, the injection of flocculants causes sludge generation, which needs to be treated as industrial waste. Membrane filtration can achieve better water quality without injecting flocculants depending on the quality of raw water.
For raw water of relatively high turbidity, membrane filtration with an immersion membrane is favorable.
Revise the capacity of the water purification plant
In conventional systems, the injection volume of flocculant needs to be adjusted by an operator. Also, the injection of flocculants causes sludge generation, which needs to be treated as industrial waste. Membrane filtration can achieve better water quality without injecting flocculants depending on the quality of raw water. For raw water of relatively high turbidity, membrane filtration with an immersion membrane is favorable.
Improve the quality of tap water
Microza provides hollow fiber technologies of uniform and sharp power size distribution, achieved by its special membrane manufacturing method. This enables stable filtered water quality to be maintained over a long time. Microza with no failure actualizes removal of protozoan, such as Cryptosporidium, bacteria, and turbidity.
Microza can sharply reduce the space of installation compared to conventional coagulation and sedimentation plus sand filtration. If the space is restricted or/and land acquisition is expensive, membrane filtration is favorable.
The existing membrane filtration system cannot maintain the desired flux
As membrane filtration involves precise filtration, membrane fouling occurs by contaminants contained in raw water. Therefore, it requires selecting a filtration rate proper to the quality of raw water and designing the system properly to achieve the stable operation of a membrane filtration system. With Microza’s technological know-how accumulated by 50 years of membrane filtration, we can help you select the appropriate filtration rate and propose a proper system design.
To recover filtration performance from fouling, periodical chemical washing is necessary. Thus, the membrane needs to have high resistance to chemicals. Insufficient chemical resistance may cause short service life by fiber rupture and/or lowered resistance against load fluctuations. Microza membranes have the top chemical resistance among all membranes in the industry and maintain stable filtration performance over a long time.
Reduce membrane replacement costs
The operating costs of microfiltration (MF) and ultrafiltration (UF) membranes depend highly on the expenses for membrane replacement. Microza membranes for water treatment possess high durability and can be used long. The performance has already been proven globally as Microza has long been implemented in plants in all parts of the world.
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.
- 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.
Proposing 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
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.
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
We can diagnose the degree of membrane deterioration and propose revised chemical washing conditions by analyzing the membrane used in your plant.
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 suppor
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.
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.