Too much technology may be killing beneficial bacteria
Too much of a good thing could be harmful to the environment. For years, scientists have known about silver's ability to kill harmful bacteria and, recently, have used this knowledge to create consumer products containing silver nanoparticles. view more (2008-04-30)
... impact of silver nanoparticles in wastewater treatment
COLUMBIA, Mo. -Too much of a good thing could be ... used to remove ammonia from wastewater treatment systems. The study was funded by a grant from ... be released into sewage lines, wastewater treatment facilities, and, eventually, to rivers, streams and lakes is ... bacteria that are used for wastewater treatment. It basically halts the reproduction ...
Water recycling in the textile finishing industry
The treatment and recycling of colored wastewater from dyestuffs producing and textile finishing industries have always been a non-trivial problem for the sewage engineering sector. The recycling of process water of textile mills is often hindered by remaining colour of azo-dyes after conventional wastewater treatment. Because of rising costs of... view more... (2002-11-22)
... treatment and recycling of colored wastewater from dyestuffs producing and textile finishing industries have always been ... colour of azo-dyes after conventional wastewater treatment. Because of rising costs of emitted wastewater, lawful limits and restricted availability of water it is of ... colored textiles per year and wastewater effluents of 330,000 m3 per year. The share of recycling ... operating costs. Furthermore the ...
Hypertension and cholesterol medications present in water released into the St. Lawrence River
A study conducted by Université de Montréal researchers on downstream and upstream water from the Montreal wastewater treatment plant has revealed the presence of chemotherapy products and certain hypertension and cholesterol medications. view more (2009-01-27)
... upstream water from the Montreal wastewater treatment plant has revealed the presence of chemotherapy products and ... have all been detected in wastewater entering the Montreal treatment station. However, only bezafibrate and enalapril ... the treated water leaving the wastewater treatment plant and in the surface water of the St. ... Lawrence River, where the treated wastewater is released.
This study was conducted due ...
The largest leachate plant in Europe
Leachates are the dirty or contaminated waters from landfills, produced as a consequence of both the moisture already present in the waste as well as of rainwater contaminated on passing through the waste material. The leachate plant has a capacity for treating 350,000 cubic metres a year, equivalent to the amount of wastewater generated by a city... view more... (2004-02-25)
... equivalent to the amount of wastewater generated by a city of 50,000 inhabitants in one year. ... and two tanks where the wastewater is treated biologically. Finally, an ultra-filtration retains the non-dissolved particles ... equivalent to the amount of wastewater generated by a city of 50,000 inhabitants in one year. ... ...
Gaiker co-ordinates a world-wide project for the reuse of purified wastewater
Gaiker is co-ordinating a world project for the reuse of purified wastewater and the aim of which is to study the possibility of using this as an alternative water resource. Just in the European Union, the implementation of strategies for the reuse of purified wastewater would enable the availability of water to be increased by 6%, which would... view more... (2004-05-11)
... for the reuse of purified wastewater and the aim of which is to study the possibility ... for the reuse of purified wastewater would enable the availability of water to be increased by ... of 2.3 million euros. ReuseWastewater treated at a purification plant can be reused for a ... Gasteiz-based Integrated Re-use Plan for Wastewater, aimed at irrigation and refilling reservoirs.Gaiker ...
Mopping up mercury - a new solution to an old problem
A pilot plant employing a new type of bioreactor has successfully been used to treat mercury-contaminated wastewater in Germany. Dr Irene Wagner-Döbler and colleagues from the GBF National Research Centre for Biotechnology, Germany, developed the technical scale plant based on previous work on mercury-resistant bacteria. Biofilms of bacteria... view more... (2001-04-01)
... been used to treat mercury-contaminated wastewater in Germany. Dr Irene Wagner-Döbler and colleagues from the ... techniques for removing mercury from wastewater are very expensive. Mercury pollution remains a significant problem because ... of the metal's extreme toxicity and accumulation in the food chain. ...
Antibiotics, antimicrobials and antifungals in waterways
Antibiotics, antimicrobials and antifungals are seeping into the waterways of North America, Europe and East Asia, according to an investigation published in the peer-reviewed journal Environmental Health Perspectives (EHP). view more (2009-06-10)
... trimethoprim present in the urban wastewaters of East Asia, Europe and North America. The scientists found ... of these pharmaceuticals in raw wastewater compared to treated wastewater.
"Rivers, creeks, lakes, estuar¬ies, basins, sea waters and wells have been ... their levels in future agricultural wastewater. The investigation also predicts that vital urban water conservation strategies ... harmful side-effects -- specifically less wastewater resulting in ...
These shells don't clam up: Innovative technique to record human impact on coastal waters
With their sedentary lifestyles and filter-feeding habits, clams have been silent witnesses to the changes that humans have inflicted upon their waters. view more (2008-12-03)
... possible to identify and trace wastewater inputs to estuaries and coastal food webs by studying the ... human influences, in this case wastewater pollution, into local waters and ultimately into the organisms living ... there," said Dr. Carmichael. "Tools that help us define and trace specific sources of human-influence on our coastal waters are essential to inform management and future research efforts." ...
A green future for scrap iron
Take a close look at that cheap piece of scrap iron before you toss it in the trash. view more (2008-11-04)
... to detoxify pollutants in industrial wastewater
Take a close look at that cheap piece of scrap iron ... to detoxify pollutants in industrial wastewater.
The project, carried out in Shanghai, was the largest in history ... ""Enhanced Biological Treatment of Industrial Wastewater with Bimetallic Zero-Valent Iron." ES&T, a bimonthly published by the ... pounds of iron to pretreat wastewater at a treatment plant in the ...
Tiny Super-Plant Can Clean Up Hog Farms and Be Used For Ethanol Production
Researchers at North Carolina State University have found that a tiny aquatic plant can be used to clean up animal waste at industrial hog farms and potentially be part of the answer for the global energy crisis. view more (2009-04-08)
... that growing duckweed on hog wastewater can produce five to six times more starch per acre ... birds - biofuel production and wastewater treatment - with one stone - duckweed," Cheng says. Starch ... technology can utilize any nutrient-rich wastewater, from livestock production to municipal wastewater.
Large-scale hog farms manage their animal waste by storing it in ... utilizes the nutrients in the wastewater ...
DTI Awards for Environmental Biotechnology
Projects to share nearly £400k New environmentally friendly ways of treating wastewater from the textile industry are among projects to share nearly £400k in funding, announced today by the Science and Innovation Minister, Lord Sainsbury. The projects are part of the DTI's BIO-WISE programme, which encourages companies to use... view more... (2001-07-06)
... environmentally friendly ways of treating wastewater from the textile industry are among projects to share nearly ... clean and remove dye in wastewater from the textile industry, led by William Clark & Sons ... and hemp, to treat industrial wastewater. Bethan Technology Ltd, based in Sheffield, will receive DTI grant ... support of £48k towards the costs of £174k. ? To raise awareness ...
Using plants and microbes to purify polluted industrial wastewater
Wetlands are nature's water filters. They collect water around river mouths and marshes, and whole communities of plants and micro-organisms feed off detritus in these murky depths. Conventional chemical treatments of industrial waters consume cash, energy and time. Wetlands, by contrast, grow and clean themselves while they act as... view more... (2003-10-07)
... these natural abilities to industrial wastewater. Toxic by-products in run-off from industrial plants can contaminate drinking ... By installing wetlands next to wastewater sources, the INDCONWET partners are growing a series of purification ... concentrations of suspended solids in wastewater by up to 98%, and phosphorous and nitrogen content by ... make the re-use of industrial wastewater possible. Different industries produce different ...
Studying the fate of drugs in wastewater
Researchers at the National Institute of Standards and Technology (NIST) have published an interesting study that sheds light on the fate of a familiar pharmaceutical as it enters the waste stream. view more (2005-12-27)
... drug is subjected to typical wastewater processing. Acetaminophen is the most widely used pain reliever in the United States, and a study of 139 streams by the U.S. Geological Survey found that it was one of the most frequently detected man-made chemicals. The scientists found that the drug readily reacts in chlorine disinfection to form at least 11 new products, ...
Phthalic symbol
Immobilized microbes can break down potentially harmful phthalates, according to researchers in China, writing in the International Journal of Environment and Pollution. view more (2009-06-22)
... widely distributed in natural water, wastewater, soils, and sediment.
Concerns about their suspected ability to cause genetic ... the activated sludge from a wastewater treatment plant. It was enriched and acclimated by incubating activated ... of phthalate in a simulated wastewater sample. Initial concentration was 100 milligrams per liter which fell ... to less than 1.0 milligram per liter within two days of treatment ...
New system of wastewater treatment could reduce the size of treatment plants by half
A group of researchers from the University of Granada (Universidad de Granada) have come up with a wastewater treatment system which has three clear advantages with respect to systems currently used: it is possible to obtain cheaper water of a higher quality, it considerably reduces the size of treatment plants (by more than half) and it minimizes... view more... (2007-08-09)
... have come up with a wastewater treatment system which has three clear advantages with respect to ... �biological processes� section in their wastewater treatment plant, which could make it possible to separate water ... from active mud by a membrane filtration process.
This researched and optimized system makes it possible to treat a larger flow of water in a smaller purifier, �and its ... |
