Aseptic Bulk Storage for Long-Term Juice Preservation

With our innovative aseptic bulk storage process, raw fruit juices can be pasteurized, cooled, and stored in large tanks. This unique concept allows partial processing, storage, and shipping before the final processing, enabling incremental product withdrawal while maintaining asepticism. Fruit juice suppliers can now store high-quality juices for extended periods without the risk of microbial contamination.

Sophisticated Engineering for Quality and Aseptic Standards

Our aseptic bulk storage tanks are cylindrical units with vertical axes, meticulously designed to meet the latest aseptic standards. The stainless steel construction of all wetted surfaces ensures food-grade hygiene and is ground to a specific surface roughness for optimal performance.

The product piping is equipped with aseptic diaphragm valves, featuring sealing solutions to prevent microorganism intrusion. Larger valves are fitted with valve rod seals and spirit reservoirs to accommodate volume changes and maintain valve cleanliness. Flanges adhere to the German DIN 11864 standard, leaving no room for bacteria cavities.

To enable complete drainage, piping is connected to the tanks’ lowest point. A protective nitrogen atmosphere is employed throughout the tanks and piping to prevent juice oxidation. Our nitrogen buffer system efficiently maintains appropriate nitrogen levels in all tanks and the entire piping system.

Ensuring Aseptic Conditions with Advanced Technology

Propeller-type tank agitators ensure optimal circulation of tank contents during juice transport. Customised tank cleaning systems maintain aseptic conditions during cleaning and disinfection processes. We utilise fresh water drawn from the CIP installation for tank cleaning and rinsing. After cleaning, tanks are filled with nitrogen to ensure aseptic conditions.

Expert Support for Uncompromised hygienic safety

Ziemann Holvrieka’s aseptic storage terminals are equipped with clean-in-place (CIP) and sterilize-in-place (SIP) installations. Our process engineers develop comprehensive cleaning programs and provide training for their efficient use.

To ensure product sterility, very specialized equipment must be operated and maintained properly. We implement automation systems to minimise the risk of human error. Electronically controlled processes for filling and withdrawing from the tanks guarantee the asepticity of the end product.

Human Involvement and Training for Optimal Performance

Though fully automated, aseptic juice terminals may still require human involvement during loading and discharge processes. Our expert training reduces the potential for product contamination with microorganisms during sterilisation procedures.

Our juice loading and refrigeration systems are equipped to maintain the required temperature regardless of ambient conditions. The equipment’s capabilities range from -10 °C to +40 °C, ensuring optimal juice preservation.

Positive Pressure for Asepticity

Asepticity is crucial for juice processing. To achieve this, NFC tanks need to be protected from contamination after sterilization. Due to the large size of NFC storage tanks, operating them under vacuum is not feasible. Instead, we use a positive pressure approach, ensuring that nothing penetrates the interior even in the event of potential leaks.

However, positive pressure alone is not enough to guarantee aseptic conditions. To prevent the settlement of organisms, we protect all valves and seals with a sterilising medium. Our comprehensive quality control system ensures that all components meet the required high standards.

Hygienic Design for FCOJ Tanks

For FCOJ (Frozen Concentrate Orange Juice) tanks, Ziemann Holvrieka offers tanks of various dimensions, including large tank farms and complete cold store process installations. We take into account the sharp increase in juice concentrate viscosity when cooled to normal storage temperatures of -10°C. Our design calculations consider static tank loads, pumps, and transfer lines, ensuring reliable and efficient storage solutions.

Effective Cleaning with CIP & SIP

To maintain consistently high product quality, proper cleaning is essential. Ziemann Holvrieka provides CIP (Clean-in-Place) and SIP (Sterilisation-in-Place) systems that effectively remove residues, deposits, and kill microorganisms. Our turnkey storage terminals facilitate juice storage for up to 18 months, supported by our well-designed CIP and SIP concepts.

Customised Tank Solutions

At Ziemann Holvrieka, we supply aseptic tanks ranging from 100 m³ up to 100,000 m³, and hygienic tanks from 5 m³ up to 1,000 m³. Our team ensures that each tank design is tailored to your specific requirements, providing you with the highest standards of hygiene, reliability, and efficiency.