Elimination organischer Spurenstoffe aus kommunalem Abwasser
type: CreativeWork
description: Municipal wastewater contains, along with suspended solids, oxygen consuming compounds and nutrients, a great number of organic trace pollutants. These are industrial chemicals, pesticides, pharmaceuticals, natural and synthetic hormones, as well as ingredients of personal care products. Even in very low concentrations (ng/L to µg/L) some of these compounds can already have a negative impact on the environment. The impact can manifest itself for example in toxic, carcinogenic and/or endocrine effects of wastewater treatment plant effluents in aquatic organisms. Nevertheless, the elimination of organic trace pollutants has not been taken into consideration yet, neither in design nor during the operation of municipal wastewater treatment plants. On the basis of the European Water Framework Directive requirements on the quality of surface waters, some changes in this attitude are to expect in the future. This study examines around 500 organic trace pollutants which are continuously monitored by the federal environmental agencies. It shows that 52 compounds are relevant for the environment, because their concentrations in wastewater treatment plant effluents and surface waters in Germany have exceeded the target values. Due to the impossibility of studying the behaviour of all 52 relevant trace pollutants during the wastewater treatment, the industrial chemicals nonylphenol and bisphenol A, natural hormone 17b-estradiol and synthetic steroid 17a-ethinylestradiol were appointed as model compounds. The criteria of choice were different biological degradation and volatilisation rates, as well as different affinity to sewage sludge. The behaviour of the model trace pollutants during the mechanic-biological treatment of wastewater and sewage sludge was studied in pilot wastewater treatment plants and in laboratory sorption and degradation experiments with radiolabelled compounds. In these experiments biodegradation was identified as the main elimination pathway. By the biode…
abstract: Municipal wastewater contains, along with suspended solids, oxygen consuming compounds and nutrients, a great number of organic trace pollutants. These are industrial chemicals, pesticides, pharmaceuticals, natural and synthetic hormones, as well as ingredients of personal care products. Even in very low concentrations (ng/L to µg/L) some of these compounds can already have a negative impact on the environment. The impact can manifest itself for example in toxic, carcinogenic and/or endocrine effects of wastewater treatment plant effluents in aquatic organisms. Nevertheless, the elimination of organic trace pollutants has not been taken into consideration yet, neither in design nor during the operation of municipal wastewater treatment plants. On the basis of the European Water Framework Directive requirements on the quality of surface waters, some changes in this attitude are to expect in the future. This study examines around 500 organic trace pollutants which are continuously monitored by the federal environmental agencies. It shows that 52 compounds are relevant for the environment, because their concentrations in wastewater treatment plant effluents and surface waters in Germany have exceeded the target values. Due to the impossibility of studying the behaviour of all 52 relevant trace pollutants during the wastewater treatment, the industrial chemicals nonylphenol and bisphenol A, natural hormone 17b-estradiol and synthetic steroid 17a-ethinylestradiol were appointed as model compounds. The criteria of choice were different biological degradation and volatilisation rates, as well as different affinity to sewage sludge. The behaviour of the model trace pollutants during the mechanic-biological treatment of wastewater and sewage sludge was studied in pilot wastewater treatment plants and in laboratory sorption and degradation experiments with radiolabelled compounds. In these experiments biodegradation was identified as the main elimination pathway. By the biode…
author: Ivashechkin, Pavel V.
language: ger
keywords: info:eu-repo/classification/ddc/620, Ingenieurwissenschaften, Abwasserreinigung, Wirtschaftlichkeit, Spurenstoff, Elimination, Abwasser, embranbioreaktor, Mikroschadstoffe, Schlammbehandlung, wastewater, trace pollutants, treatment costs, membrane
date published: 2006
date modified: 2026-07-30T19:43:10Z
provider: RWTH Aachen University
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: Publikationsserver der RWTH Aachen University