Comparison of disinfection processes using chlorine dioxide

Decomposition product | After introducing a limit value for chlorate in the German Drinkaing Water Regulation, there is growing concern as to whether chlorine dioxide can still be a suitable disinfectant. Pursuant to EU 2020/749 (Maximum Residue Levels for Chlorate in or on certain Products), different limit values exist. Pursuant to the German Drinking Water Regulation 2023, a limit value of 0.07 mg/l of chlorate applies.

EHEDG certificate ensures hygienic design

Proof of quality | The fifth and final part of the BRAUWELT series on hygienic design describes the possibilities for getting EHEDG certifications. Operators thus have independent proof that components and fittings comply with the requirements of hygienic design and are thus optimally suited for installation in beverage production. An independent assessment by customers is not trivial as the term “hygienic design” is not protected. The Research Centre Weihenstephan for Brewing and Food Quality of the Technical University of Munich (BLQ) is one of the testing laboratories authorised by EHEDG to carry out such certification.

Precisely dosed measures for greater water efficiency

Saving water | In the brewing industry, too, the focus has turned to the consumption of our precious water resources in an attempt to minimise our impact on the environment. Water isn’t just the main ingredient in the production of beer but also essential as process water, such as in the use of the pasteuriser, reverse osmosis, the cooling tower and wastewater system. Efficient measures and technologies can help to significantly reduce the amount of water consumed in these areas and thus enable breweries to operate more sustainably. In this article, various approaches will be outlined as to how breweries can increase their water efficiency using specific measures.

Hygienic design – fit for the future

Best prerequisites | The fourth part of our Hygienic Design series introduces the European Hygienic Engineering and Design Group (EHEDG). The German test centre is located at the Weihenstephan Research Centre for Brewing and Food Quality (BLQ). Its particular facilities ensure that Hygienic Design assessment, so important for the brewing and food industries, can be carried out.

EHEDG aseptic tests: certification for aseptic use

Aseptic filling | The third part of the BRAUWELT series about hygienic design covers a very specific application: aseptic filling. For these processes, it is important that fittings have special properties. To test whether fittings are suitable for aseptic processes, the Weihenstephan Research Centre for Brewing and Food Quality at the TU Munich offers specific EHEDG testing methods. These are, among others, the basis for an EHEDG aseptic certification.

Avoiding chlorate in beverage production

Disinfection processes | Chlorate is a by-product of disinfectants harmful to health. It can form during water disinfection and thus has to be monitored during beverage production. It is important to become familiar with the causes, legal framework, recommendations, sources of ingress and implications for health of chlorate in order to develop effective prevention routes and strategies for avoiding exposure to chlorate. In this technical article, the focus is on these measures from the aspect of “Safe and low-chlorate operation of disinfection plants existing or planned”.

Efficiency in CIP processes

Cleaning efficiency | Modern CIP systems are only a point of discussion when they don’t work as they should do. CIP systems provide great service for a long time without any grounds for complaint or the need for any further intervention – bar the necessary maintenance. Their degree of efficiency can decrease, however. More detailed study of CIP systems reveals that they do indeed have several weak points that can mutate into risks.

Hygiene and quality control on filling systems

Contamination | Hygiene deficiencies on filling systems are usually a home-made problem. Even if this sounds like an extremely simple statement to make, nevertheless it’s a fact. But why is this so? And why do quality controllers today often not identify the weak points at their own plant? This requires some explanation, for it’s not for lack of suitable training.

Spray shadow tests: Trust is good, but control is …

Cleaning results validated | Spray shadow tests are a useful and proven tool for validation of automatic cleaning systems. This holds true for new installations, changes to existing systems and regular revision. Based on two industrial examples, the usefulness of two different spray shadow tests, both used at VLB, is illustrated.

On-demand cleaning: what’s already possible?

Optimised cleaning | On-demand cleaning is today often seen as a vision for a new form of sanitation. But what’s behind this? How is the need for cleaning defined? Martin Löhrke, CEO of Jürgen Löhrke GmbH in Lübeck, Germany, takes a look at the options already in place to meet the requirements of individual cleaning operations.

50 years of brewing microbiology: what’s changed?

Brewery hygiene | If we look back on 50 years of brewing microbiology, we gain a number of extremely interesting insights. Can we draw a positive conclusion here or are there also negative aspects that have to be taken into account?