Projects
May 2021
Delegation of the Indonesian Embassy visits MYT plant at Kahlenberg
With 250 million inhabitants, Indonesia is one of the most populous countries in Southeast Asia and will be reorganizing its waste management in the coming years. In the south of Jakarta, in the Nambo district, one of the largest waste treatment plants in Southeast Asia is being planned. Technologically, the MYT process is way ahead there. Contracts are currently being examined and drawn up, and the chances for the MYT process are very good.
The plant technology is offered by EUWELLE from Emmendingen, a subsidiary of the Chinese WELLE Group. The WELLE Group has already built 4 plants in Asia using the MYT process, including what is currently the largest MYT plant in Bangkok.
At the request of the Indonesian Embassy in Germany, EUWELLE together with the Consul General of the Indonesian Embassy, Mr. Acep Somantri, Consul Riris Wusananingdyah and Consul Dimas Wisudawan visited the MYT plant of the Zweckverband Abfallbehandlung Kahlenberg in Ringsheim (ZAK) on May 27, 2021. The chairman of the association, district administrator Frank Scherer, as well as the managing director of the association Georg Gibis welcomed the visitors at the plant. After a tour of the plant, the concept of the Nambo plant was presented by the managing director of EUWELLE, Mr. Hubert Wienands.
The plant in the south of Jakarta will process 1,800 t/d of waste and thus dispose of the waste of about 2.3 million people. For comparison, the ZAK plant at Kahlenberg will process the waste of about 600,000 people. In the future, the waste will be used to generate electrical energy, compost and refuse-derived fuel. The substitute fuel will be sold to a leading global cement manufacturer. Up to now, coal has been the main fuel used in cement production there. The substitute fuel replaces the fossil fuel previously used.
The plant will eliminate the emissions previously caused by depositing waste in landfills. In addition to the production of substitute fuel, the avoidance of methane gas, which is produced in the landfill and mostly escapes into the atmosphere, is a further contribution to the reduction of carbon dioxide emissions.
Consul Dimas Wisudawan; Consul Riris Wusananingdyah; Consul General Acep Somantri; District Administrator Frank Scherer; Hubert Wienands, Managing Director EUWELLE, Marc Loskarn, EUWELLE; Yanyue Zhou EUWELLE, Georg Gibis, Managing Director Zweckverband
The delegation from the Indonesian Consulate General was visibly impressed. "The plant is exemplary in terms of its technological concept and overall impression. You can't
tell that the plant has been in operation for 15 years. It is a great challenge to export this example to Indonesia" said Consul General Somantri.
"We are happy to share our know-how with interested international parties. We are pleased about the great interest in the MYT technology, especially from Asian countries, and we are happy to contribute to the development of environmentally sound waste management and climate protection" reported association chairman Scherer.
"With the patented MYT process and our know-how, we at ZAK have developed a future-proof technology that has stood for cleanliness, ecology and reliability for over 15 years. Our mechanical-biological waste treatment plant has already treated around 1.5 million tons of waste and produced around 50 million cubic meters of biogas since it went into operation, making it one of the most efficient plants in the entire industry," the district administrator went on to explain.
The Zweckverband Abfallbehandlung Kahlenberg owns patents, utility models and trademarks for technologies for the treatment and recycling of waste, which were developed and continuously refined by Managing Director Gibis and his team. This know-how of ZAK has already been applied to plants in Lille in northern France, in Bangkok, and in three plants in China.
The contract for the Nambo plant is expected to be awarded at the end of the second quarter of 2021. Construction of the plant will take around 30 months.
April 2020
WELLE consortium wins a new PPP contract for recycling construction waste worth USD 82.6 million
In the first quarter of 2020, the consortium of the WELLE Group, SDIC Eco-Environmental In-vestment Development Co, Ltd. and Shanghai Construction No.7 (Group) Co, Ltd. was assigned with a BOT contract for the treatment of construction waste and mixed construction waste for the Shanghai Minhang District. The client is the project company "Shanghai Minhang District Landscaping & City Appearance Administration Bureau Maqiao Recycling and Utilization PPP Project".
With a total value of 82.6 million US dollars, this project has been commissioned to build and operate a treatment facility for mixed construction and demolition waste in Shanghai Minhang District and several central districts of Shanghai. The treatment capacity of the project is 700,000 tons of construction and demolition waste per year. The consortium will construct and operate this plant on a BOT model.
As subsidiaries of the central and state-owned companies, SDIC Eco-Environmental Investment Development Co, Ltd. and Shanghai ConstructionNo.7 (Group) Co, Ltd. the consortium has a strong capital base and expertise. The cooperation between WELLE Group and the above mentioned companies will ensure the smooth implementation of this project from various aspects such as financing, technology and human resources.
The project will use an innovative combination of processes including crushing, screening, windsifting, metal separation and NIR sorting technology. The key components are imported from leading companies in Germany. The high machine running times and availability as well as the high quality influenced the decision. The highest international standards are required for the execution. EUWELLE coordinates the cooperation between the project execution team in China and the international suppliers in this project.
After treatment, the recycled products will be used for brick and concrete production. Metal, wood and plastics contained in the construction waste are sorted and recycled on a large scale, so that the construction waste is really converted into "urban recyclables". The underground arrangement of the plant components and the associated perfect environmental protection measures ensure the health of the employees and cleanliness in the plant. The underground construction method also leads to a significant reduction in noise in the plant environment.
The plant is given a garden-like design in the immediate vicinity. The green areas surrounding the plant offer the residents an attractive space for leisure activities. After commissioning, the Minhang project will become a flagship and demonstration project for the whole of Asia.
The use
of renewable resources is an integral part of building an ecologically sustainable civilisation, an important element of closed loop recycling management and an important component of waste avoidance and recycling. The client's decision to launch the "Maqiao Recycling and Utilization PPP Project" will significantly reduce the amount of land required for the disposal of such waste, thus enabling other uses for this land. The operating and production conditions at the plant provide an optimal working environment for the employees. The planned plant will optimize the urban design and significantly improve the living conditions in the vicinity of the plant.
December 2019
Worldwide largest MYT plant starts operation
Now the time has finally come. In December 2019, after a construction period of over 18 months, the MYT plant could be charged with waste for the first time.
The plant will treat 800 t of mixed household waste in the future. The delivered waste has a water content of 54% and an organic content of 47%. This waste composition is ideal for the two-stage MYT process.
After a metal separation and a separation of the high caloric components in a drum screen, the wet organic-rich screen undersize fraction is fed into the percolation or hydrolysis reactor (MZR). There the excess water is removed and the low caloric organic components are converted into organic acids and washed out with the recycled percolation water.
The percolate water is then fed to the 4 anaerobic reactors, each with approx. 4,000 m3. The biogas produced is converted into electrical power in a CHP unit. A part of the generated electrical energy is used for the own requirements, the largest part is fed into the grid.
The excess waste water is removed from the circuit and treated by amembrane bioreactor and downstream membrane plants until it is discharged directly into the watercourse. A part of the treated wastewater is reused for the cleaning of roads and vehicles.
The MYT process is a two-stage fermentation process in which hydrolysis and methane formation take place in two separate reaction chambers.
Overview of the Onnut MYT project
What are the main advantages of a two-step process compared to a one-step anaerobic treatment?
- separation of the anaerobic process into a hydrolysis stage and a methane formation stage
- The waste can be treated with short residence times in the hydrolysis reactor (1 to 2.5 days compared to < 15 days in single-stage processes). This leads to lower reactor volumes.
- Low pH-values in the hydrolysis reactor prevent precipitation on the waste and reduce maintenance costs.
- High solids concentration after hydrolysis dewatering of the solid discharge (55 to 60 % total solids) and thus high caloric values in the dewatered waste.
The waste treatment plant Onnut uses the advanced and mature MYT technology of MYT BU in Ringsheim, Germany. With a capacity of 800 TPD, this is the world's largest waste treatment plant using this technology. EUWELLE has been commissioned for the technology transfer between the licensors and WELLE as licensee.
First waste load of the plant
October 2019
Sale of hammer mills to China
The use of maize or rice straw in biogas
plants is a challenge for the mixing technology used. In addition to an early
harvest time, the straw length and also the water absorption capacity of the
straw have an influence on the miscibility of the substrate which should not be
underestimated.
There is a high demand in China for biogas plants that are fed
with maize or rice straw. In larger plants the straw content within the
substrate matrix often dominates up to 90 %. Here, straw pretreatment is of
great importance.
On behalf of a Chinese customer, EUWELLE has
now searched for suitable size reduction technology in Germany. The choice fell
on the company Christof Willemsen from Stadtlohn. With more than 150 hammer
mills sold in Germany, Willemsen is one of the market leaders in this field.
This type was sold to China
Mr. Willemsen at the trial in Nov. 2018
In November 2018, representatives of the Chinese
customer were on a trade fair visit in Germany. During this visit Willemsen
offered to carry out a trial on his company premises with maize straw.
The demonstration as a whole, as well as the
shredding result was convincing. In August this year the contract for the
delivery of several machines was signed. The hammer mills will be ready for
collection at the end of November. The transport to China will be taken over by
the customer. Commissioning is scheduled for January 2020. Willemsen will then
verify the performance data of the machines on site. Qian Li, project manager
of the Chinese customer and negotiator for this purchase says: "Our
expectations are very high after the test results achieved. We assume that the
pre-shredding process will result in improved mixing in the reactors and thus a
higher biogas yield. If this is confirmed, these will certainly not be the only
machines that Willemsen supplies to China". Yanyue Zhou of EUWELLE has
worked from research to project. She will also support the Willemsen company
during the commissioning.
July 2019
Trinational cooperation in the construc- tion of the Mechanical biological waste treatment Onnut in Bangkok - the project installation is heating up:
The Chinese company WELLE Environmental Group Co., Ltd.
cooperates with the Thai companies E-Square Environment & Engineering Co.,
Ltd. and A2 Technology Co., Ltd. in the con-struction of the 800 TPD waste
treatment plant in the Onnut District, Bangkok. The Onnut waste treatment plant
uses the advanced and mature MYT technology of MYT BU in Ringsheim, Germany.
Installation work is currently in full swing. Two drum screens, four percolatin
reactors, four anaerobic digesters and the desulphurization unit for gas treatment
have already been installed. Preparations are underway for the installation of
the remaining plant components. Commissioning is expected to start in October
2019.
After completion of the Onnut 800 TPD MYT project, it will be the world's
largest waste treatment plant using this technology. EUWELLE is responsible for
the technology transfer between the licensors and WELLE as licensee.
From 23 to 26 July 2019,
Mr Gibis and Mr Moser from the MYT BU in Germany visited the Onnut project in
Bangkok. They were supported and accompanied by Shuang Chen, project engineer
of EUWELLE. The MYT BU examined the installation work in detail and provided
suggestions for optimisation and correc-tions.
Mr Gibis was then very positive
about the design and the good international cooperation of the technical team. "It is fun to see how the different nationalities cooperate and support
each other. The colleagues all work very diligently, seriously, modestly and
prudently.
I am very happy to be working with such a good and cooperative team.
I am very confident that we will be able to show a successful start-up with the
Onnut plant".
July 2019
Successful commissioning of the kitchen waste treatment plant Haidian (Beijing), China
The German company TECHNOCON, based in Berlin, has been successfully selling its High Performance Digester (HPD) for several years now. Characteristic for this technology is the division of the reaction volume into two "twin" fermenters. An automatic drainage system at floor level enables continuous operation without the need to empty the septic tank regularly for sediment removal. Together with the optimized hydrodynamic design, the pump ensures gentle local mixing of the sludge bed. No movable internals are required for mixing the fermenters. The design is characterized by low space requirements (volumetric loading: 8 to 12 kgVS/m3*d) and low energy consumption (1.5 W/m3 reaction volume).
The first plant of this type was commissioned in 2014 in Ulsan, South Korea. The largest plant built to date processes 400 tons per day. Due to the good experience in Korea, WELLE became aware of this process. Through the mediation of EUWELLE from Emmen-dingen (Germany) a very successful cooperation with the Chinese company WELLE regarding this technology was established. The HPD process will be used for the first time on a commercial scale in 2018 in Ningde and Haidian. Construction of another plant in Hangzhou will start in October of this year.
This means that next year a total of 5 HPD systems will be in operation in the kitchen waste treatment application.
The Haidian plant in Beijing was commissioned in May 2019.
The HPD plant processes 200 tons per day of waste after pre-treatment. The pretreatment consists of sorting and shredding.
After dewatering, the oils are removed from the liquid phase.
The solid phase of dewatering is processed by composting, the liquid phase to fermentation. The fermentation consists of two HPD reactors and a fermentation residue storage tank. The degradation of organic matter is 80 % and the biogas yield of
0.85 m3 Biogas/kg oTSin
are high in comparison to conventional digesters.
Dr. Soo Myung Kim, Technical Director of Technocon says: "The experience in Korea has helped us a lot to transfer this technology to China. The cooperation and support of EUWELLE has made the implementation much easier. We hope to be able to offer further projects with EUWELLE in the future according to this procedure also in Southeast Asia".
June 2019
Project Tacheng in Xinjiang, China
For a biogas project in Tacheng, northern China in the province of Xinjiang, EUWELLE is supplying six agitators from a well-known manufacturer in Denmark. The plant will be loaded with a mixture of cattle manure, sugar beet residues and maize straw. Up to 470 tons of this mixture are to be processed into biogas every day. The plant consists of 6 bioreactors of about 6000 m3 each. In each bioreactor 1 piece of agitators are installed. The agitators, each with 3 agitator arms, are mounted centrally. The daily amount of biogas is 36.000 m3/d.
The resulting biogas produces 20.000 m3/d of biomethane. Commissioning of the plant is scheduled for September 2019.
June 2019
Project On Nut in Bangkok, Thailand
The mechanical biological plant of the On Nut transfer station is based on the MYT® process concept of the Kahlenberg Waste Management Association. WELLE won this project in a consortium with the Thai company Esquare. MYT BU has granted a licence to WEHRLE Umwelt for China and Thailand. WEHRLE Umwelt in turn has granted a sublicense to WELLE. The mediation and technology transfer is done by EUWELLE.
The plant is scheduled to go into operation at the beginning of 2020, making the On Nut plant the world's largest plant using this process.
"Adapting the technology developed and tested in Germany to Asia's waste in a large-scale project like On Nut is a great challenge for me as a young engineer. It is incredibly exciting to work at the interface between the licensors and the parent company. And it's really fun."
Shuang Chen - project manager at EUWELLE.
May 2019
Hong Xinglong and Long An -2 Biogas projects in China
The implementation of environmentally friendly energies has become much more important in China in recent years. Energy generation from biomass and agricultural waste is also becoming increasingly important. In 2018, two plants for the fermentation of corn straw were awarded in China. The Chinese company Hangzhou Energy and Environmental Engineering (HEEE) was awarded the contract for these two projects. Together with German partners, a 4 MW plant will be erected in Hong Xinglong in northern China and a 2 MW plant in Long An in southern China.
The basic design comes from the engineers from RP Ingenieure in Zerbst near Magdeburg. The vertically installed agitators will be supplied by Steverding from Stadtlohn. EUWELLE researched these technology partners and then put them in touch with HEEE.
Mr. Stefan Steverding, Managing Director of Steverding says: "We were initially very skeptical about this enquiry from China. One reads constantly about the bad experiences of especially small and medium-sized German companies in the Chinese market.
Without EUWELLE the business would never have come about.
After perfect
delivery, good cooperation and full payment, this order has shown us that you have to make your own experiences.These projects have also led us to become more open to enquiries from abroad. So we also learned something from these Chinese projects. Many thanks to our colleagues at HEEE for this!"
May 2019
Nanofiltration plant delivery for shopping mall at Hung Phu Residential
Quarter, Ben Tre, Vietnam
Shortly after the founding of EUWELLE, the first nanofiltration plant was successfully commissioned for the Hung Phu Residential Quarter shopping centre in the province of Ben Tre with a drinking water capacity of 450 m³/day.
The province of Ben Tre is located in the Mekong Delta in southern Vietnam. The water treated by the municipality is contaminated with high concentrations of inorganic substances, especially during the dry season. The salts contained make the water undrinkable.
Based on this situation, EUWELLE and IMU Consult Germany have jointly developed a treatment system consisting of nanofiltration equipped with a high-performance membrane. This ensures that the treated water is fresh and salt-free. Together with our local project management partner VNWELLE the nanofiltration plant was built with selected high-quality measuring and control technology from Germany in order to ensure optimal operation regarding fresh water quality, plant availability and service life of the plant.
Đồng Thanh Bình, VNWELLE's project manager, is extremely satisfied after commissioning:
"The plant supplied by EUWELLE fully meets our expectations. This enables us to offer our extremely demanding customers outstanding fresh water quality. Although this was the first time that we purchased a plant from Germany, the project went smoothly. We also hope to be able to handle further projects with EUWELLE in the rapidly growing Vietnamese market in the future."
"The plant supplied by EUWELLE fully meets our expectations. This enables us to offer our extremely demanding customers outstanding fresh water quality. Although this was the first time that we purchased a plant from Germany, the project went smoothly. We also hope to be able to handle further projects with EUWELLE in the rapidly growing Vietnamese market in the future."