Chemical Water Treatment for membrane treatments
Membrane units, in our days are widely used in the water pre-treatment preparation and are becoming one of the most important technologies in the production of high pure water. Nevertheless they often face problems with scaling and fouling and are therefore limited by frequent maintenance, downtime and high costs. Our treatment programs are specifically designed for membrane units like reverse osmosis, ultra- and nanofiltration and enable to remove or preventive control scaling and fouling. Our main target is to run these plants under environmentally friendly and beneficial economic conditions. Special attention is given to an efficient utilization of energy as well as saving precious water. Kurita develops an efficient and effective treatment concept achieving an optimal economic operation and a maximum operational reliability of a plant.
Membrane units are used in various sectors of industry:
- Surface technologies (cutting fluids, tooling oils, emulsions, cataphoresis bath, phosphating bath, painting, cleaning bath)
- Sea water desalination
- Boiler water preparation
- Pharmaceutical industry
- Kuriverter/ Osmotech and Kurifloat: broad range of cleaners, antiscalants and dispersing agents for membrane treatment
- Kuriverter IK 110: Biofilm removal
- Kuriverter RC: Rejuvenation concept for damaged membranes
- Ferrocid: range of biocides*, compatible with membranes
Do you need support? Our qualified experts will be glad to advice you personally and individually.
We select the most suitable antiscalant for each specific application and supply water quality. The Kurita antiscalants offer excellent inhibiting effects for:
- Colloids and suspended matter
- Iron and manganese
- Calcium carbonate
- Calcium sulfate
- Strontium sulfate
- Barium sulfate
Our product portfolio includes antiscalants with NSF certification.
In order to prevent the process of biofouling effectively, the addition of biocides and biofouling daily control agents are essential and highly recommended. Kurita has developed special biocides* which substantially contribute to the economical operation of reverse osmosis plants. Our technology is characterized by:
- Low dosing rates
- Dispersion of existing biofilms
- Prevention of germ resistance
Kurita has a broad and deep expert-knowledge as well as particularly developed and innovative products for these treatment steps. With various analytical methods, e.g. SDI-measurements, the appropriate products can be selected already in specific lab-tests.
It is therefore necessary to clean the membranes regularly. Specific demands require individual solutions for the proper cleaning procedure. Kurita performs a range of preliminary investigations in order to develop a suitable cleaning procedure. The following aspects are of importance:
- Autopsy of membranes
- Performance tests
- Analyses of water
- Purification tests
- Analyses of deposits
- Analyses of water and deposits
- Autopsy of membranes
- Cleaning tests
- Microscopic investigations
- Surface analyses
Based on these comprehensive preliminary investigations it is possible to select the most suitable biocides, antiscalants and cleaning chemicals and, thus, to operate a plant in an economical and environmentally friendly way.
*Attention: Use biocides safely. Always read the label and product information before use.
Based on our experience and with the help of our experts, we develop tailored solutions to meet your individual requirements. We gladly provide personal advice.