Industrial wastewater treatment by vacuum evaporation with the KLC-MASTER Line

Operators receive dedicated training, and the installations are supported long-term through maintenance services and specialized technical support. In addition, Klarwin supplies consumables authorized by the equipment manufacturers, to maintain the performance and reliability of the system.

Beyond operation, we also provide consultancy for preparing tender documentation, helping beneficiaries define the right technological solutions. This way, every project starts with a solid foundation and the right partner alongside.

The KLC-MASTER Line is the newest generation of vacuum evaporators from KMU LOFT Cleanwater SE, the German leader in industrial wastewater treatment by vacuum evaporation. Compared with previous generations, the MASTER Line integrates higher-performing, more energy-efficient components in a more compact footprint, improving distillate quality and significantly reducing energy consumption.

The heart of the system is the KLC natural-circulation technology, validated in more than 2,200 installations worldwide over the past 35 years.

Why industrial wastewater treatment is no longer optional

European and Romanian legislation on industrial wastewater is becoming ever stricter. The new EU Directive 2024/3019 imposes additional secondary, tertiary and quaternary treatment requirements for direct discharges from industrial sectors, including the removal of micropollutants and heavy metals.

Romania, declared in its entirety a sensitive area within the Danube basin, is facing an infringement procedure (C 668/25) for insufficient implementation of Directive 91/271/EEC. The NTPA-001 and NTPA-002 norms set strict pollutant load limits for discharge into natural receivers or sewer networks.

Fines for illegal wastewater discharge can reach 60,000 lei for legal entities (GEO 195/2005), and compliance pressure grows every year.

Operating principle

1. The vacuum pump generates negative pressure in the system;
2. Wastewater is drawn into the boiling chamber;
3. Air is repeatedly compressed and heated up to 130°C, transferring heat to the wastewater;
4. At the boiling temperature of 85°C (under vacuum), water vapour is produced;
5. The vapours are cleaned in the separator and condensed into high-purity distillate;
6. Thermal energy from condensation is recovered to preheat the fresh wastewater;
7. The distillate is discharged to the sewer or reused as raw water in manufacturing processes, while the concentrate is evacuated;
8. The process restarts automatically — fully autonomous operation.

Why industrial companies choose the KLC-MASTER Line

KLC-MASTER Line technical specifications

Top performance in a compact, energy-efficient design.

• Technology: vacuum evaporation with natural circulation
• Water recovery: up to 98% reusable distillate
• Boiling temperature: ~85°C (under vacuum)
• Compression temperature: up to 130°C
• Energy efficiency: +25% vs. previous generations
• Space savings: >10% installation, 60% service
• Cleaning: fully automated
• Controls: latest generation, real-time visualization
• Design: modular, customizable
• Residue concentration: evaporation with natural or forced circulation (for heavily foaming water), adjustable
• Certification: ISO 9001 — all processes
• Origin: Made in Germany

Note: exact capacities (litres/hour), dimensions and specific energy consumption vary by configuration and application. Contact us for a personalized sizing.

Suitable for the most difficult industrial wastewater

Treatable wastewater types

• Water from manufacturing and production processes across industries;
• Industrial washing and cleaning water;
• Rinsing water and active baths;
• Emulsions, cooling lubricants and processing fluids;
• Water containing oils, salts and heavy metals;
• Water containing separation agents and glycol;
• Landfill leachate, mine water;
• Moderately radioactive water;
• Water containing reusable materials destined for recycling.

Industries served

• Automotive and aerospace;
• Metal processing and production;
• Surface technology (galvanizing, coatings);
• Machinery and plant construction;
• Electronic and optical device production;
• Electromobility and battery production;
• Energy industry;
• Food and beverage industry;
• Healthcare;
• Waste disposal and management.

A complete solution — not just a piece of equipment

The KLC-MASTER Line is not just an evaporator — it is the core of a complete treatment system. Pre-treatment and post-treatment processes are optimally matched to the evaporator according to the specific requirements of each application. Pre- and post-treatment components can be integrated directly into the MASTER Line or used as evaporator periphery, in a fully automated system solution.

Complementary equipment available

• Belt filters for pre-treatment;
• Exhaust air treatment systems;
• Deionized water circulation systems;
• Inline neutralization;
• Reverse osmosis;
• Oil separators.

KMU LOFT Cleanwater — 35 years of excellence

KMU LOFT Cleanwater SE is the German leader in vacuum evaporation technology for industrial wastewater treatment. Founded in 1990 in Kirchentellinsfurt, Germany, the company delivers complete solutions, from the initial wastewater analysis and expert consultancy through to design, manufacturing, installation and after-sales service.

All equipment is manufactured entirely in Germany, with ISO 9001 certified processes. The closed-loop system (Zero Liquid Discharge) allows treated water reuse and energy recovery, simultaneously reducing operating costs and environmental impact.

• Turnkey solutions, from analysis and consultancy to production, installation and service;
• Over two thirds of the systems sold in 30 years are still in operation;
• Zero Liquid Discharge philosophy — closed-loop system;
• Made in Germany — German quality and reliability.