Low-waste cleaning saves water and costs

Photo: Ivan Bandura / Unsplash

Industrial cleaning and washing agents are a key component of many production processes, from the automotive industry to food processing. However, growing sustainability demands, REACH regulations, and economic pressure to reduce costs are forcing manufacturers to seek ways to optimize water, energy, and chemical consumption. In recent years, low-waste technologies have emerged, combining innovative formulations with smart process solutions. These approaches not only reduce environmental impact but often also improve cleaning efficiency and extend equipment lifespan. What specific trends and technologies are currently being adopted, and how can they be implemented in practice?

Why low-waste cleaning is a priority for modern production

Industrial cleaning is an essential part of manufacturing processes, but traditional methods often result in high consumption of water, chemicals, and energy. With rising raw material costs and increasingly stringent environmental regulations (such as REACH or the Industrial Emissions Directive), companies are focusing more on technologies that minimize waste and enhance efficiency. Low-waste cleaning is not just a matter of sustainability—it is an economic necessity. According to estimates, process optimization can reduce water consumption by up to 40% and chemical usage by 20–30% without compromising the quality of the results.

A key factor is the transition from single-use systems to recirculating or closed-loop circuits. For example, membrane filtration or electrolytic cleaning allows for the repeated use of cleaning baths, significantly reducing the amount of wastewater. Proper dosing of chemicals is also important—modern automatic systems can precisely regulate the concentration of surfactants or alkaline substances based on current needs, preventing waste.

Innovative Technologies for Water and Chemical Savings

Among the most promising technologies is ultrasonic cleaning, which uses high-frequency waves to remove impurities even without aggressive chemicals. This process is particularly effective for delicate components where mechanical cleaning is not possible. Another option is CO₂ cleaning systems, where liquid carbon dioxide is used as a solvent—after evaporation, it leaves no residue and is recycled back into the process.

Significant progress is also brought by enzymatic cleaning agents, which operate at lower temperatures and with fewer chemicals. Enzymes specifically break down organic dirt (e.g., fats or proteins), allowing for a reduction in surfactant concentration and extending the lifespan of washing baths. For industrial applications, reverse osmosis systems, which purify wastewater so it can be reused in the process, have also proven effective.

Photo: Patrick Federi / Unsplash

Process Optimization: How to Properly Set Up Washing Baths

Cleaning efficiency depends on the correct setting of washing bath parameters – temperature, pH, chemical concentration, and exposure time. For example, excessively high temperatures increase energy consumption and may damage sensitive materials, while low temperatures reduce the effectiveness of surfactants. The ideal range is between 40–60 °C, but for some applications (e.g., enzymatic cleaning), even 30 °C is sufficient.

Controlling pH is also important – alkaline baths (pH 9–11) are effective against organic dirt, while acidic baths (pH 2–4) remove mineral deposits. Automatic dosing systems help maintain the optimal concentration of chemicals and prevent overdosing. Another step is the regular analysis of the washing bath using standard testing methods, which helps determine when the bath needs to be replaced or replenished.

Practical Tips for Implementing Low-Waste Solutions

The first step toward efficient cleaning is an audit of existing processes – identifying areas with the highest water or chemical losses. This is followed by selecting the appropriate technology: compact recirculation systems may be advantageous for small and medium-sized operations, while large plants often invest in membrane filters or automated dosing units. Employee training is also crucial to ensure they understand the principles of efficient cleaning and adhere to established procedures.

Further savings can be achieved by combining mechanical and chemical cleaning – for example, pre-treatment with pressurized water reduces the need for chemicals in the subsequent bath. Sustainability can be further enhanced by selecting biodegradable surfactants or substances with low VOC content. Last but not least, it is advisable to keep track of industry innovations, such as hybrid systems combining ultrasound with enzymatic cleaning agents, which offer high efficiency with minimal resource consumption.

Photo: Crystal Kwok / Unsplash

Use of membrane technologies for recycling washing baths

Membrane technologies, such as ultrafiltration or reverse osmosis, represent an effective way to extend the lifespan of washing baths and reduce water and chemical consumption. These methods separate impurities, oils, and other contaminants from the washing solution at the molecular level, enabling its repeated use. Ultrafiltration is particularly suitable for removing solid particles and emulsions, while reverse osmosis can remove even dissolved salts and organic substances. The result is a clean permeate that can be returned to the process, and a concentrate that must be further processed or disposed of.

Implementing membrane systems requires an initial investment in equipment, but it pays off in the long term due to savings on water, chemicals, and wastewater disposal costs. A key factor is the proper selection of membranes and their regular maintenance to prevent fouling and a decline in efficiency. In practice, combining membrane technologies with pre-filtration and chemical treatment of baths has proven effective, ensuring stable quality of the recycled solution and minimizing the risk of product contamination.

Intelligent dosing of chemicals using sensors and automation

Precise dosing of cleaning and washing agents is crucial for achieving optimal results with minimal raw material consumption. Modern systems use sensors for continuous monitoring of key parameters of the washing bath, such as pH, conductivity, turbidity, or the concentration of active substances. Based on this data, automated dosing units adjust the amount of chemicals added in real time, preventing waste and ensuring consistent cleaning quality.

The advantage of intelligent dosing is not only the savings on chemicals but also the reduction of wastewater load and the extension of equipment lifespan. Sensors can detect the presence of specific contaminants, such as heavy metals or oils, and adjust the cleaning process to meet current needs. For maximum efficiency, it is important to regularly calibrate sensors and update dosing algorithms according to changing production conditions. This approach is particularly beneficial in industrial operations with high variability in contamination, where manual dosing often leads to excessive chemical consumption.

Eco-design of cleaning agents: How the choice of raw materials affects waste

Low-waste cleaning is not just a matter of technology but also the correct selection of cleaning agents. Modern formulations focus on biodegradable and low-toxicity components that reduce the ecological footprint and facilitate subsequent wastewater treatment. For example, surfactants based on vegetable oils or enzymatic cleaning agents break down dirt more effectively and at lower concentrations than traditional synthetic alternatives. This allows for a reduction in the consumption of chemicals and water while maintaining high cleaning efficiency.

Another trend is the minimization of packaging waste through concentrated formulations or returnable packaging systems. Manufacturers are also increasingly introducing products with eco-friendly certifications that meet strict requirements for biodegradability and toxicity. When selecting cleaning agents, it is important to consider not only their effectiveness but also their compatibility with recycling technologies and their impact on the overall waste balance. The right combination of eco-design and optimized processes can lead to a significant reduction in the amount of waste generated and the costs of its disposal.

Need advice on selecting raw materials?

Every application requires an individual approach. GCG Group supplies a wide portfolio of raw materials for industrial cleaning agents, including technical data sheets and safety data sheets (SDS). Our experts will help you select the optimal formulation for your specific needs and processes. Contact us – or browse our catalogue of over 1,300 products right away.