DAS Environmental Expert GmbH applications
Generating solar energy is considered `green technology`, even though the production of solar cells based on silicon predominantly uses process stages that have been common practice in the semiconductor industry for many years. As in the semiconductor industry the production of solar cells employs dangerous and environmentally harmful substances, which require abatement according to legal provisions. The production of photovoltaic cells therefore is subject to strict requirements for treatment of waste gases and wastewater. Solutions need to be easy and cost-effective. The contaminated wastewaters and waste gases should, under no circumstances, lower performance, endanger the health and safety of humans, or otherwise negatively affect the availability of production facilities. The safety of the production line must be guaranteed at every step and in every operating situation.
Market analysts predict sustained growth in demand in the LED industry. After LED backlighting for the small LC displays of mobile phones and the LC displays of larger screens in the television market, the next potential growth market is the lighting industry: Sales of LEDs in this market in 2012 are almost USD 3.5 billion – thus nearly doubling since 2010. Analysts are expecting a growth of more than USD 7 billion in 2014 and believe that the total market for LEDs should peak at USD 17.7 billion.* A mass market of this scale for LEDs also means increasing emissions that need to be abated by specific waste gas treatment systems at the point of use. In the manufacture of products based on innovative light emitting diode (LED) technology, ammonia and hydrogen are used in large quantities as process gases. The environmental engineers at DAS have recognised this market trend and developed new solutions such as LARCH for waste gas treatment in MOCVD processes.
Manufacturing TFT/LCD displays requires waste gas treatment as well. Processes that produce large scale Thinfilm Transistors (TFT) on glass substrates, for instance, use Chemical Vapour Deposition – CVD – to separate the thin films onto the material. The process requires cleaning the process chamber periodically and usually employs etching with NF3. Etching of the separated thin films typically utilises CF4, SF6 and chlorinated gases, which release large amounts of waste gas mixtures.
Enterprises in the beverage industry are facing tough competition. Water consumption is one of the most significant cost factors in the sector, since water is the main ingredient of their products. In addition, bottle washing or cleaning of machines and equipment also requires enormous amounts of clean water. This is why beverage producers need a wastewater treatment system that meets these demands.
Companies in the food industry need large amounts of water – as an ingredient of their products, but also – in large amounts – for the production process and for the cleaning of raw materials, machines and equipment. Water cleans, washes and is processed. Using this essential resource carefully helps to reduce costs. The biological wastewater treatment process by DAS Environmental Expert enables companies to recycle usage water and therefore lower overall consumption.
The cosmetics industry accrues many kinds of wastewater. The challenge for wastewater treatment is that product lots are often changing, thus changing the composition of the wastewater. Switching to a new product lot in particular, produces large amounts of wastewater that are contaminated by surfactants, dye, oils and emulsions and high COD concentrations. In addition, wastewaters foam excessively at times.
The tourism sector lives by offering cleanliness and a comfortable environment. All guests love amenities such as pools, swimming ponds and parks, but they require high maintenance. Moreover, hotels produce domestic wastewaters as well. DAS Environmental Expert offers complete solutions for biological wastewater treatment for hotels and resorts.
Municipalities are required to treat the accrued wastewaters according to resource conservation guidelines. DAS Environmental Expert supports you by developing optimum solutions for wastewater treatment that are based on holistic concepts.