Mienis Waterzuivering
About us
For more than 50 years, Mienis Waterzuivering BV stands for high quality in water treatment through membrane technology.
Our systems are known for their robustness and high quality. We were the first in the world to run reverse osmosis systems robustly on well water. Since then many innovations have come from us. The last is our UF system , with which we can treat drain water up to 100% closed circuit, so with no discharge. In particular, the robustness of our systems has not been matched to this day. Our systems are fully automatic. Settings, readings and alarms can be viewed on the screen and in the cloud.
Are you looking for a water purification system for the treatment of well water, surface water, drain water or another water source? Than you have come to the right place!
Products & services
Ultrafiltration
The biggest advantage of ultrafiltration is that the purified water quality is many times better than that produced with other techniques. A UV installation kills 99.9% of bacteria and viruses, but cannot be applied in every situation. Similar rates also apply to heaters since an UF membrane has a filtration degree of 99.999999% on bacteria and 99.999% on virusses. This means that the effect of ultra-filtration is much higher in comparison to a UV installation or a heater. An additional benefit is that less or almost virtually no biofilm forms inside the pipelines. As a result organisms do not have a breeding ground that allows them to grow or regrow inside the piping. Other disinfection methods do not prevent this. Another major benefit is low energy consumption. There is no gas consumption and the high electricity consumption associated with UV lamps is lacking. Energy consumption is often less than 0.2 kW/m3/h. Furthermore, ultrafiltration combines well with the use of expensive nutrients, such as iron chelates. As a result of the clean product water, minimal dosing of chlorine or peroxide is sufficient to keep infection pressure behind the system under control. This is the reason why users are satisfied with their return on investment.
Reverse Osmosis
Many of our innovations have been adopted by the market over the years. Jan Mienis, our company’s founder, over 50 years ago discovered how to retain the stability of reverse osmosis applied to well water. Nowadays this procedure is used throughout the world. Yet, Mienis’s reverse osmosis continues to make the difference. Over the years we gained a great deal of experience with different contaminants. We optimally use this knowledge to provide advice about new membranes, the right pre-treatment and the right chemicals, such as Anti-scalant. However, it is not always possible to prevent membranes from becoming contaminated. This is why we have developed a reverse osmosis system that is able to maintain itself through means of a Cleaning in Place (CIP) process. Cleaning modules, such as CIP, have been in existence for some time; however, Mienis is the only supplier that has fully automated this process. The system uses sensors to determine when a CIP needs to be started up and carries out the cleaning process independently. The systems we ship to Africa and the Middle East are equipped with this capability as a standard feature. It is of course better to delay a CIP as long as possible. Most of the contamination develops when the system is not producing. We developed a solution for this more than 50 years ago. Our systems may be shutdown for 6 to 12 months, after which they will start up again without any problems. By contrast, the systems of our competitors must be turned on for a short period of time every day in order to prevent the build-up of contaminants, with unnecessary energy consumption as a consequence.
Mienis Water
Let us introduce you to a small, but innovative family business! The Mienis family have been drilling wells for more than 150 years and have since specialised in the design, construction and installation of Reverse Osmosis systems for more than half a century. Our clients benefit from being one of the oldest builders in the world of Reversed Osmosis systems on borehole water. Because of our special knowledge of boreholes and other water sources, our systems are robust and low on maintenance. Furthermore, in recent years we have fully devoted our efforts to sustainability, which has resulted in the continued development of our Ultrafiltration system. In all our activities we fully enjoy the cooperation with our national and international customers.