Our Waterguide for water treatment
Technical knowledge and expertise
From our engineers
We have compiled explanations and definitions of the most important terms in water treatment. In our Waterguide, we have divided these explanations into categories; you can then use these to narrow down topics. Or simply use the technical term search and you will find what you are looking for. If you still have questions, please do not hesitate to contact us!
Blowdown units
Herco blowdown units and bypass metering sections for controlled limitation of thickening in open cooling circuits and air scrubbers.
Chemical free hardness measurement
Ion-selective hardness measurement is a technique used to determine the concentration of specific ions, such as calcium and magnesium, in a liquid, typically water.
Cleaning and descaling pumps
Cleaning and descaling pumps are used to remove limescale deposits from a wide range of industrial and commercial units.
Conductivity meters
Conductivity meters measure the electrical conductivity of the demineralised water between two electrodes in µS/cm.
Dosing
Ultimate precision when dosing biocides, gaseous biocides directly from the delivery containers, and antiscalant. Dosing is even reliable with high concentrations in low feed volumes.
Electrodeionisation
Electrodeionisation (abbreviated to “EDI”) or electrodialysis is a process for the continuous desalination of permeate from a reverse osmosis unit.
Electrolysis types: AEL, AEM, PEM, SOEC
Ultrapure water is the central raw material in electrolysis. Scalable frame and container plants produce ultrapure water for the electrolyser. Four different electrolysis technologies can be distinguished in this context.
Filtration
In the case of water content, a distinction is made between solid particles and dissolved substances. Solid particles such as suspended solids and granular particles are almost completely removed by filtration if the particle size and density are high enough.
Flow measurement
Flow measurement, or volumetric flow measurement, involves the measurement of the passage of a liquid, gas or steam through a pipe.
Hardness monitoring devices
Automatic hardness monitoring for the automatic monitoring of soft water downstream of the softening unit. A downstream reverse osmosis unit can be switched off automatically in the event of a hardness breakthrough.
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Iron and manganese removal
Iron and manganese removal are technical processes in water technology for removing iron and manganese from water.
Membrane degasser
Membrane degassing is used to reduce the amount of dissolved CO2 in the permeate of a reverse osmosis unit, or potentially between the first and second stage of a reverse osmosis unit.
Mixed-bed demineralisation
In addition to undissolved impurities (particles), most water contains varying concentrations of dissolved ions. Metals and hydrogen are present as cations (positive charge), acid residues and hydroxyl ions as anions (negative charge).
Nanofiltration
Similar to ultrafiltration and reverse osmosis, nanofiltration is a pressure-operated membrane separation process for filtering an impure solution.
Pressure booster units
Pressure booster units compensate for fluctuations in network pressure, such as those caused by changing flow rates. In addition, intelligent controllers prevent pressure surges in the system.
Pressure measurement
Pressure refers to a force acting on a surface. Mathematically, this relationship is expressed by the quotient p = F/A, which contains the units Newton for the force F and m² for the surface area A.
Reverse osmosis
The natural flow of osmosis from low concentration to high concentration is reversible when external pressure is applied to the highly concentrated solution.
Softening
Softening units exchange the hardeners of calcium and magnesium ions for sodium ions using a strongly acidic exchange resin.
Softening units
Softening units exchange the hardeners of calcium and magnesium ions for sodium ions using a strongly acidic exchange resin.
Tanks
Herco offers a range of permeate tanks in sizes up to 4,000 litres. All of the tanks are easy to maintain and are ready for different options to be installed.
TOC
The TOC value (Total Organic Carbon) refers to the total amount of carbon compounds in a sample that can be attributed to organic substances.
Ultrafiltration
Ultrafiltration is a filtration process from the field of membrane technology that can be used to separate and concentrate macromolecular substances and small particles from a medium.
UV disinfection
An environmentally friendly and easy-to-use method is to expose water to ultraviolet light (UVC). The UV exposure is approved according to the German Drinking Water Ordinance (Section 11, Part II on disinfection procedures) – it reliably kills bacteria and viruses.
Water treatment units
Many industrial manufacturing processes depend on clean water. Water in its natural state cannot be used in sensitive areas and therefore requires purification in advance.
In our Waterguide you will find in-depth Information on all aspects of water treatment
Water treatment describes the process of removing contaminants and pollutants from water to make it safe and/or pure for industrial or medical applications. Water treatment can involve a combination of different physical, chemical and biological processes such as filtration, sedimentation, disinfection, reverse osmosis and activated carbon adsorption. The goal is to produce water of a certain quality necessary for subsequent processes.
Water treatment is important in industry for various reasons. For example for:
- Process water: In many industries, water is used as a raw material in various production processes. Here it is important that the water used meets certain quality requirements and is free of contamination.
- Or cooling water: Many industrial plants need cooling water to regulate the temperatures in machines and equipment. The cooling water must be free of impurities to ensure the proper functioning of the equipment. Water treatment ensures that the cooling water has the required quality.
In medicine, water purification can be used in several ways. For example, in the production process of medicines and medical devices, pure water is often needed to ensure that the products are free of contaminants.
The water treatment also plays an important role in dialysis treatment, in which the blood of patients with kidney failure is purified. Thereby, the water must be extremely pure in order to prevent impurities from entering the patient's body. In addition, water treatment is also important in the process of cleaning and disinfecting medical equipment and instruments to ensure that they are free of germs and other harmful contaminants.
Water treatment in medicine is an important process that helps to ensure the safety and effectiveness of medical products and procedures. The water treatment units have special features of their own: They have an almost dead-zone free design with a high stainless steel content.