Abstract
Does Waste Water Treatment Plant Upgrading with Powdered Activated Carbon Result in Reduced Water and Sediment Toxicity of the Receiving Stream?
Highlights
Waste water treatment technologies have been continuously improved over the past 40 years, a large proportion of anthropogenic substances that are present in European surface waters are still released via waste water treatment plants (WWTPs) [1]
At sampling site 6, which is located downstream of the WWTP Eriskirch, a decrease of the concentrations was only observed for three substances (1H-benzotriazole, 5-methyl benzotriazole, sulfamethoxazole), whereas the concentrations for carpamazepine and diclofenac increased after the upgrade of the WWTP Langwiese (Figure 5)
Our results clearly demonstrate that an additional cleaning stage based on powdered activated carbon (PAC) represents an efficient and adequate technology for the reduction of trace substances in the treated waste water and notably, for the reduction of embryotoxic potentials in stream sediments
Summary
Waste water treatment technologies have been continuously improved over the past 40 years, a large proportion of anthropogenic substances that are present in European surface waters are still released via waste water treatment plants (WWTPs) [1]. Environmental pollution with trace substances and waste water treatment with different cleaning technologies have been in the focus of today’s scientists and politicians. How fast this additional wastewater treatment technologies result in an improvement of ecosystem health, is far from being understood
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