Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Purified wastewater from hospitals

05.12.2007
Hospital wastewater is contaminated with drugs that can pollute the environment. A newly developed system deals with the problem at source, directly treating and purifying wastewater from the toilets before it ever reaches the sewage plant.

Antibiotics, cytostatics and psychotropics – many are the drugs swallowed by hospital patients. A certain amount of these substances is excreted and finds its way into the sewers. Traces of them can still be detected in the water even after treatment in the sewage plant, as they are not biologically degradable. Experts are not yet fully able to predict the impact on the environment. However, there are numerous indications that the feminization of fish, the diminishing effect of antibiotics, and even a reduced sperm count among young men can be attributed to these residues in the water.

In a joint project with the Duisburg Institute of Energy and Environmental Technology IUTA, researchers at the Fraunhofer Institute for Environmental, Safety and Energy Technology UMSICHT have developed a means of treating hospital wastewater right where it is produced – ensuring that toxic substances never even reach the municipal water network. The outstanding feature of the system is that, rather than tapping the hospital’s entire wastewater stream, it concentrates on partial streams such as the toilet sewage from the oncology department. This tends to be particularly highly contaminated due to the medication administered to patients in the course of chemotherapy, for example. Other wastewater such as that of the hospital laundry or the kitchen does not flow unnecessarily through the system – the drugs are thus concentrated in small quantities by volume. “The method is extremely effective,” says Fraunhofer UMSICHT project manager Bettina Becker. “Following treatment, over 99 percent of the tested substances have been dispelled and can no longer be detected in an analysis.” The researchers tested “wastewater” to which cyto-statics, antibiotics, psychotropic drugs and pain-killers had been added. After cleansing, it had completely lost the toxic and genetically harmful effect.

This is how the method works: First of all, the suspended solids are deposited in a sedimentation tank. Then the water passes into the reaction container, where ultraviolet light, hydrogen peroxide or ozone produce radicals that destroy the active drug ingredients. A prototype of the pilot plant, which was planned and built with funds from the BMWi, is currently installed at the IUTA. Hospitals would be well advised to install such compact plants in the wastewater system in future. There might even be a financial incentive for doing so: Surcharges which hospitals would otherwise have to pay for heavy contamination of wastewater may no longer need to be levied.

Press Office | alfa
Further information:
http://www.fraunhofer.de

More articles from Ecology, The Environment and Conservation:

nachricht Successful calculation of human and natural influence on cloud formation
04.11.2016 | Goethe-Universität Frankfurt am Main

nachricht Invasive Insects Cost the World Billions Per Year
04.10.2016 | University of Adelaide

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

Im Focus: MADMAX: Max Planck Institute for Physics takes up axion research

The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.

The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...

Im Focus: Molecules change shape when wet

Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water

In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

IHP presents the fastest silicon-based transistor in the world

05.12.2016 | Power and Electrical Engineering

InLight study: insights into chemical processes using light

05.12.2016 | Materials Sciences

High-precision magnetic field sensing

05.12.2016 | Power and Electrical Engineering

VideoLinks
B2B-VideoLinks
More VideoLinks >>>