|Entsorga China 01_2010|
|Editorial: Entsorga goes to China|
|First-rate supporting program: IFAT CHINA +EPTEE+CWS 2010|
As in the past, the supporting program at this yearâs IFAT CHINA + EPTEE + CWS will be a first-rate discussion and information platform. Besides technical and scientific conferences and workshops, there will be theme specials, exhibitor presentations and B2B matchmaking for exhibitors.
|Waste disposal strategy for better quality of life: Asia and Europe in search of solutions for controlled waste management|
The largely unregulated waste management poses grave problems in many Asian cities. The need to organize waste management systematically and communicate this to people requires a lot of awareness training, good networking, a clear focus on results and a great deal of patience. Key individuals on all levels must be involved in order to increase acceptance among the population. The Technologie-Transfer-Zentrum, ttz (Technology Transfer Centre, ttz) in Bremerhaven, Germany, is aiming to develop and locally implement a realizable model with 21 partners from Europe and Asia, within the EU project ISSOWAMA (Integrated Sustainable Solid Waste Management in Asia). The project was officially launched in Bangkok on February 11 and 12.
|Hydrofluoric acid neutralised: Disposal bottleneck for uiquicl special waste elimination|
A state-of-the-art plant for neutralising (highly) toxic liquid production residues, which was also planned according to the latest safety standards, started operation near Leipzig (East Germany) last year after taking just six months to build. This especially alleviates a bottleneck in the disposal of hydrofluoric acid caused by increasing demand for products in various industries.
|Low-energy lamps create problem waste: The fate of the light bulb is sealed in Europe|
Heinz-Wilhelm Simon, Martin Boeckh
After 130 years, Europe bids farewell to the incandescent light bulb. Conventional bulbs are too inefficient, too expensive, and too harmful to the climate. But the switch to low-energy lamps is not without consequences for the environment -- not, at least, as long as there is no adequate disposal system for the mercury contained in the new lamps. All low-energy lamps, most of which are manufactured in Asia, contain the poisonous heavy metal mercury.
|Landfill sites as a source of pests: Waste disposal often leads to problems with pests at the landfill site|
In Germany, tipping untreated household waste has been banned since 2005. But the country still has numerous landfill sites, collection points and intermediate storage areas. Here, one specific problem has not been resolved it has only been relocated: vermin and pest infestation. However, pest control has to be limited to containing the problem. This article describes pest control methods that could be used throughout the world.
|Fine-tuning the fire: Plant controls improve waste incinerator economics|
Thermal waste incineration plants are generally characterized by strong fluctuations in fuel characteristics, such as calorific value and water content. To keep emissions low, furnace controls have to meet stringent design, parameter and ease-of-use requirements. For large-scale furnaces, it makes sense to use model-based control systems, such as those commonly used for years in oil refineries. The result is a reduction in operating costs and lower quantities of flue gas.
|Reliable identification of conductive metals: Sorting metals with no optical aids|
The EX900 sorting unit, manufactured by Exsor GmbH, is a completely new development in the field of fully automatic, sensor-aided metal sorting. It can accurately recognise and sort out electrically-conducting materials, has a throughput of up to 60 tons per hour for slag and has an intelligent automation concept with freely selectable sorting and metal programs. Thanks to the PROFIBUS automation concept it is possible to control, monitor and visualise all assembly groups and subsystems universally and modularly, while the system can be extended almost infinitely.
|Low point of the recession now overcome: The steel sector is recovering|
Martin Boeckh, Bernhard Schaaf
The Chinese steel sector is recovering from the recession, at least for the time being. Since hitting rock bottom in mid-November 2008, prices have significantly recovered, the warehouses have reduced their excess stock, and companies are hoping that the governmentâs infrastructure programme will help them overcome the crisis, reports the âAsien Kurierâ in its March edition. The steel recycling sector will also benefit from the upswing.
|The long arm of the East: China keen to get hold of German electronic scrap|
Dr. Dipl.-Chem. Beate Kummer
In future, energy and resource efficiency, as well as principles of closed loop recycling management will set the political agenda more than short-term economic growth. Germany is more than just a role model -- it will also be attractive as a supplier of raw materials for the Middle Kingdom.
|Complete utilisation of plastics: A study looks at the consumption and utilisation of plastics in Germany|
Consumption of plastic in Germany continues to increase. The issue of waste utilisation in Germany has been clarified: more than 96 per cent of plastic waste is now utilised. Consequently, plastics are an important resource even after their first usage phase.
|Paper export with opportunities and risks: The financial crisis leads to market adjustment in the paper industry|
The global financial crisis has also reached the German recycling industry. But as opposed to the banking and automotive industries, the recycling industry has not responded with panic or predictions of Armageddon. Admittedly, there are some problems with exporting wastepaper to China, but in Germany the industry sees more opportunities than risks. In any case, there will be some form of market adjustment. An important representative of the German disposal industry and an expert in the area of wastepaper expresses his views on the situation in the global market. Lutz Siewek is Managing Director of Nehlsen GmbH & CO. KG in Bremen (Germany), where he is also responsible for the company's entire raw materials business.
|"At first, they just smiled at us": PVC window recycling pays off|
Apparently, recycling worn out PVC windows and doors pays off - at least for Veka Umwelttechnik GmbH. The eastern German company recently put its second recycling line into operation and is considered a specialist in the window recycling industry.
|Industrial quality raw material: Mixed PET plastic can be prepared for mechanical recycling|
Prof. Dr.-Ing. JĂ¶rg Woidasky, Dipl.-Ing. Andreas Stolzenberg
The Fraunhofer Institute for Chemical Technology ICT in Pfinztal-Berghausen near Karlsruhe (Southern Germany) has developed and tested a process to prepare mixed PET (polyethylene terephthalate) from sorted packaging waste for mechanical recycling. The material can be used for injection moulded parts in technical applications.
|Designed for growth: Food waste is perfect for bio-gas generation|
Dr. Johann Chaloupka
With the completion and commissioning of the Malchin food waste fermentation plant, its designer Entec Biogas GmbH of Austria, has obtained a further large-scale contract in this field of bio-gas technology. Planning is currently underway for the Selby food waste fermentation bio-gas plant in England; the first stage of construction is slated to begin this year.
|CO2-neutral natural gas: The world's largest bio-gas plant feeds gas into the German natural gas network|
The bio-gas plant manufacturer WELtec BioPower GmbH of Vechta, Germany was granted a construction permit to build the world's largest bio-gas plant, which will feed the bio-gas it produces directly into Germany's natural gas network.
|Hard work for the microbes: Soil remediation in a tank farm|
Dr. Thomas Caro, Dr. Thomas Berger
In a tank farm in BelĂ©m (Brazil) the soil was found to be highly contaminated. With the help of a biological process this soil is remediated by microbes and then reused at the site. Because the process was originally developed in Germany, it had to be adapted to suit the local climate. The entire operating crew are subject to the tank farm's technical safety regulations, which comply with international standards and are strictly implemented.
|Nature to the rescue: Natural processes can reduce pollutants in groundwater|
Hans Joachim Schmitz
When contaminated sites are being remediated authorities and the companies concerned focus on contaminant loads in the groundwater. So-called natural attenuation processes have been increasingly monitored and used over the last few years. A collaborative research project, which has been working for more than six years in Germany, has now developed the scientific fundamentals to better understand the natural degradation processes. As part of the project, 24 contaminated sites were examined in detail.
|Investigations of Site-Contaminations in China: Initial Site-Contamination-Investigation and -Remediation in China|
Currently in China there is proceeding a serious intensification of the environmental law relating to future critical limit values and the obligation of accompanying measures. Also in China the assessment of possible financial relevant features of sites like hazardous waste contaminations and groundwater pollution is becoming more important. Nowerdays, the investigation concerning contaminations of sites in China is becoming necessary and interesting for German investors. Meanwhile, in the course of all-embracing Due-Diligence-examinations for site assessments in China for a German investor the R&H Umwelt GmbH from Nuremberg/Germany (R&H) already has performed several initial site-contamination-investigations including the initial investigation of the building-substance on industrial sites.
|Merciless physics: Drivers and loaders are both responsible for load securing|
Diplom-Verwaltungswirt (FH) Alfred Lampen
Over the last few years, the subject of load securing has become very important. However, in spite of all the efforts some basic mistakes are still being made, meaning that many loads are not adequately secured. This results in major accidents with serious injuries and high levels of material damage â especially in domestic goods transport.
|Alternatives to wheeled loaders: Tracked conveyors and program-controlled conveyor belts have advantages:
Wheeled loaders are still indispensable working machines in many companies â also in construction material recycling plants. They are used because of the long operating hours they are capable of. In addition to the final loading, in many cases intermediate stockpiles are created, although these can result in considerable costs and risks.
|Decentralised solutions sought: Small sewage treatment plants offer many options|
Small modular plants for water management have become increasingly popular over the last few years. And there are some very good reasons for this trend. They help provide flexible solutions for future challenges such as demographic changes, climate change and diminishing raw materials. Small sewage treatment plants also offer interesting perspectives for Asia.
|Success with activated carbon: Pollutant input of fluorosurfactants reduced|
A newly developed process to clean industrial wastewaters reduces input of the environment and health damaging industrial chemical perfluorooctane sulphonate (PFOS) by more than 87 per cent. This is the result of a pilot project carried out by Hansgrohe AG in Schiltach, Germany.
|An exceptional material: State-of-the-art wastewater treatment|
Bioworks Verfahrenstechnik GmbH (Germany), a pioneering specialist in biological wastewater treatment, produces floating micro-bubble aeration systems. Their new â âOxiworksâ aerator required the very best in materials to meet market standards. At the same time, the treatment specialists were keen to team up with a supplier capable of offering exceptional technical expertise. In Simona and its Simona PP-H AlphaPlus, Bioworks found both a reliable partner and a best-in-class product solution.
|10 years anniversary celebration in China: Constant Waterlevel Sequencing Batch Reactor (CWSBR)|
Zhan Ji Ling, Dr. rer. nat. Tim Koeckritz, Axel Dederichs
CWSBR âConstant Waterlevel Sequencing Batch Reactorâ is an innovative biological treatment technology for municipal wastewater. The application of the CWSBR technology started in 2000 in order to lower the costs of wastewater treatment plants significantly. After an intensive period of quality assurance by the patent holder âGesellschaft fĂŒr Abwasser- und Abfalltechnik mbHâ (G.A.A) in Germany the international acceptance of CWSBR increased rapidly. In China the sole authorized technology holder and promotion representative, Dalian MEC Environmental Technology & Engineering Co., Ltd. (Dalian MECETC) realized the successful implementation of CWSBR in the market and achieved high social and economic benefits.