Details zur Publikation

Referenztyp Zeitschriften
DOI / URL Link
Titel (primär) Full-scale bioremediation and long-term monitoring of a phenolic wastewater disposal lake
Autor Stottmeister, U.; Kuschk, P.; Wiessner, A.;
Journal / Serie Pure and Applied Chemistry
Erscheinungsjahr 2010
Department UBT; GF;
Band/Volume 82
Heft 1
Sprache englisch;
Keywords Bioremediation; enhanced natural attenuation; iron-humate; lignite; polyphenolic compounds; pyrolyzed lignite
Abstract A former open-cast pit was used as the disposal site for wastewater from lignite low-temperature processes. The formed lake with a strong stratification had a final volume of 2 × 106 m3. Its water was highly toxic and of dark brownish color (transparency about 3 cm). Traditional remediation methods were too expensive, and it was therefore necessary to develop a new, ecologically and economically acceptable remediation strategy. This strategy is based on a first step of the dark-brown-colored macromolecules as iron-humate flocs at pH 4.0. These macromolecules are similar to fulvic/humic acid and are formed abiotically by autoxidation of polyphenolic compounds. Thus, the dissolved organic matter (DOM, about 280 mg/l) was decreased by about 50 % and transparency improved. After a neutralization step with 2200 m3 of 20 % calcium carbonate and a subsequent "fertilization" with 0.75 % phosphoric acid (3 × 0.8 m3) "enhanced natural " was initiated. Due to higher transparency, intense growth of algae ("blooming") and bacteria started in the upper zone of the lake. In winter, algae sedimented and one after the step, the water of the surface zone was almost clear (transparency 1 m, after 10 years over 3 m) and odorless.
ID 10557
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=10557
Stottmeister, U., Kuschk, P., Wiessner, A. (2010):
Full-scale bioremediation and long-term monitoring of a phenolic wastewater disposal lake
Pure Appl. Chem. 82 (1), 161 - 173