Eintrag und Elimination von gefährlichen Stoffen in kommunalen Kläranlagen

Abstract

No abstracts.

Occurrence and temporal variations of the xenoestrogens bisphenol A, 4-tert-octylphenol, and tech. 4-nonylphenol in two German wastewater treatment plants

“…The elimination rate calculated on the spot samples is 73% in WWTP Sindlingen and 93% in WWTP Niederrad-Griesheim and 100% calculated on the 24-h composite sample (see Table 2). A similar observation has previously been reported by Fahlenkamp et al (2007) for WWTPs in Germany. Bisphenol A is easily biodegradable under aerobic conditions and has a moderate logP ow =3.32 indicating that elimination mainly should occur by biodegradation.…”

“…The high elimination rate of 4-tert-octylphenol can be explained mainly by accumulation to sludge and its assumed persistence against biodegradation (Isobe et al 2001). The results are in good agreement with another study which provided elimination rates of 98.3% for 4-tert-octylphenol for WWTPs in Germany (Fahlenkamp et al 2007).…”

Thin Coatings of α‐ and β‐Bi2O3 by Ultrasonic Spray Coating of a Molecular Bismuth Oxido Cluster and their Application for Photocatalytic Water Purification Under Visible Light

“…The decomposition of the biocide triclosan and the medicinal drug ethinyl estradiol in wastewater is an important research target. Although their concentrations are still below the legal limit, their inlet as well as their outlet concentrations to sewage treatment plants are already above the detection limits of the routinely used analytical instruments, which was exemplarily monitored for two German cities . Residuals like the antimicrobial agent triclosan can be a problem for the so‐called secondary treatment, that is based on the use of microorganisms in sewage plants.…”

“…Although their concentrations are still below the legal limit, their inlet as well as their outlet concentrations to sewage treatment plants are already above the detection limits of the routinely used analytical instruments, which was exemplarily monitored for two German cities. [15] Residuals like the antimicrobial agent triclosan can be a problem for the so-called secondary treatment, that is based on the use of microorganisms in sewage plants. Ethinyl estradiol is known for its high estrogenic activity even at concentrations already present in the environment, which can disrupt amphibian mating behavior for example.…”

GC‐MS analysis of organic compounds in wastewater and sewage sludge

“…2. The behavior of the trace compounds examined in the WWTPs could be explored on the basis of the sampling at all process steps of the water route, the sludge path as well as the processed water [19]. Former studies [20,21] pointed out the need for mass balancing of organic trace compounds.…”