2007 - 2008


Wastewater treatment with activated pre-clarifier and planted soil filters
Dipl.-Ing. Claus Lindenblatt, Prof. Dr.- Ing. habil. Marc Wichern, Univ.-Prof. Dr. Harald Horn
With a series of buffer tank, activated pre-clarifier (SBR) and planted soil filters, it is possible to get a stable degradation and good effluent values in the case of unsteady inflow and changing concentrations. In the process presented here the activated pre-clarifier is working as a denitrification tank and the soil filter as a nitrification reactor. An automatic control manages the storm-water runoff, the waterrecirculation returns the nitrate and provides a minimal feed. Experiences with this plant from 1999 to 2005 are given in this paper, research has been done in the project ‚ÄúPlanted soil filters as a Biotechnological Process‚ÄĚ, founded by the German Federal Environment Foundation (DBU). A full scale pilot plant was built to treat wastewater from composting sides, with a 42m3 SBR and a bed area of 2 ¬£ 550m2 of the planted soil filters. Now, after six years of operation, the results are still satisfactory. Besides this pilot plant, landfill leakage and municipal wastewater have been treated in a technical scale plant with the same process in an 80 L SBR and 0.75m2 vertical flow soil filter with good results.
Planted soil filters with activated pretreatment for compost-place wastewater treatment
Dipl.-Ing. Claus Lindenblatt, Univ.-Prof. Dr. Harald Horn
With the series of buffer tank, activated preclarifier and planted soil filters, it is possible to have a flexible operation by unsteady inflow and changing concentrations. An automatie control manages the storm-water runoff, and the water-recirculation provides a minimal feed, so the plant always runs effectively. Experiences with this plant since 1999 are given in the frame of the project "Planted Soil Filters as a Biotechnological Process", founded by the German Federal Environment Fondation (DBU). Today, after six years of running, the results are still satisfactory.
Activated pre-clarifier and sand filtration - Treatment of nitrogen rich wastewater from a biogas plant
Dipl.-Ing. Claus Lindenblatt, Prof. Dr.- Ing. habil. Marc Wichern, Univ.-Prof. Dr. Harald Horn
Processwater from an organic waste biogas plant was treated in a two step biological wastewater treatment system. With a plant combination of storage tank, SBR (aprox. 100 L), sand filters (2x0.825m2) and recirculation several operational adjustments were tested during one year. The oxidation reduction potential (ORP) gave typical signs for a stable nitrogen removal without nitrite problems although ammonium inflow concentrations of up to 1.260 g/m3 are reached. An optimized operation was possible with the control of inflow amount, recirculation rate, aeration time and if necessary addition of a carbon source. Microbiological analyses with FISH and CLSM indicated the existence of a high amount of Nitrospira and Nitrobacter bacteria in the sand filter. High mean removal efficiencies were reached for COD 82%, NH4-N 98% and NT 90%.
Name:

Passwort:

 Angemeldet bleiben

Passwort vergessen?

Der ASK Wissenspool
 
Mit Klick auf die j√ľngste Ausgabe des Content -Partners zeigt sich das gesamte Angebot des Partners
 

Selbst Partner werden?
 
Dann interessiert Sie sicher das ASK win - win Prinzip:
 
ASK stellt kostenlos die Abwicklungs- und Marketingplattform - die Partner stellen den Content.
 
Ums√§tze werden im Verh√§ltnis 30 zu 70 (70% f√ľr den Content Partner) geteilt.
 

Neu in ASK? Dann gleich registrieren und Vorteile nutzen...