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More than 600,000 euros saved per year with Doppstadt MMAK!

More than 600,000 euros saved per year with Doppstadt MMAK!

Regional waste disposal company invests in mobile-modular processing concept

Michael Wiese, owner of Wiese Umwelt Service GmbH, in an interview.

The amendment to the Biowaste Ordinance came into force on May 1, 2023. With consequences: Foreign substances, especially plastics, should be kept out of the organic waste treatment processes, such as fermentation and composting, from the outset. Against this background and in order to reduce the immense costs of disposing of the sieve residues that have accumulated so far, the regional disposal company Wiese Umwelt Service GmbH based in Berga (Thuringia) decided more than a year ago to invest in the mobile-modular processing concept (MMAK). decided by Doppstadt. The company composts around 25,000 organic waste per year – and the trend is rising – at the Polte-Ringfurth site. In an interview, company owner Michael Wiese explains the advantages of the system concept and the reasons that led to the decision to invest.

Mr. Wiese, how has your company developed in recent years?
We are a typical family business. I started in the company in 1999 and gradually built up the composting facilities. At that time we had an area of 2,000 square meters, now our site extends to 55 hectares, on which we process an amount of approx. 350,000 tons of organic waste and sewage sludge per year. In total, we operate eleven plants in the three federal states of Saxony, Saxony-Anhalt and Thuringia and employ around 60 people.

Did the cooperation with Doppstadt come about because of the rapid growth?
Yes, among other things. We needed more efficient plant concepts to handle the volume of orders. But the real trigger was both the changed legislation in the form of the amendment to the Biowaste Ordinance and the dramatically increased disposal costs for the sieve residues. After our request, the Doppstadt team came to the site and set up a test facility for a period of about two weeks. This enabled us to test the processing concept for practicality with regard to our requirements. The concept completely convinced us. Today I can say: the cooperation works great. The chemistry with Doppstadt is just right.

Due to current events: An amendment to the Biowaste Ordinance came into force on May 1, 2023. What changes did this bring and how is the MMAK helping to meet them?
The most important aspect for us is the stipulation that the proportion of impurities in organic compost may only be two percent. Before it was 5 percent, it has more than halved. This aspect brings with it technical challenges. The MMAK convinces here by removing the disruptive and foreign substances contained in the organic waste before the actual composting process. We have not found a comparable system concept from other providers that has the decisive criteria of legal certainty, economic advantages, high output quality and flexibility.

Has the use of the MMAK also resulted in a higher quality of the finished compost?
Yes, a higher quality is clearly recognizable. The coarse materials are not even processed. As a result, the material is much finer from the start and there are no visible plastic parts in the organic compost. The difference is also clearly visible to our customers. In addition, the pre-treatment of the organic waste has resulted in a reduction in the throughput time of the rotting process by around 4 weeks.

What effect does the higher quality have on profitability?
We don't have any sales problems because the quality is right. In addition, we have significantly less sieve residue and therefore lower disposal costs. This aspect is important for us against the background of the energy crisis.

Can the financial advantage of the MMAK be expressed in concrete terms?
Yes absolutely. Together with Doppstadt, we calculated a savings potential of up to 600,000 euros per year before purchasing the MMAK. We are very satisfied because in practice the result is even more than the savings calculated at the time. The amount that we pay to the bank each month to finance the MMAK is recovered four times over through the savings. So the investment is already paying off.

How efficiently does the MMAK work in day-to-day business?
Clear answer: very efficient. A simple comparison: With our old machines, our team screened for up to two weeks on one job. We can now do the same amount in a day or two. We didn't expect such a difference, but we are of course pleasantly surprised. In this way, we have made an enormous leap over our competitors.

Let's take a look into the future: are you planning further investments in this area?
A lot is happening in our industry right now. The trend is currently towards fermentation plants because methane and thus also gas can be produced from organic waste. It's a completely different process. We will continue to monitor how the market develops. We are currently satisfied with our latest investment. What comes next, we'll see.

We are very happy about that. Thank you for the interesting insights.
Very gladly.