Dynamic Modelling of a Biofilter Used for Nitrification of Drinkingwater at Low Influent Ammonia Concentrations

نویسندگان

  • Isabelle Queinnec
  • Juan-Carlos Ochoa
  • Etienne Paul
  • Alain Vande Wouwer
چکیده

This paper reports on the development of a mathematical model of a packed bed biofilter operating at low influent ammonia concentrations. It is initially filled with biomass-free media, the adhesion by filtration of the bacteria present in the groundwater allowing colonization of the filter. The mathematical model is intended for simulation/optimization purposes, and should describe sufficiently well the start-up phase, as well as nominal operation. Unknown model parameters are estimated using experimental data collected on pilot plants. Validation and cross-validation results are discussed.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A detailed model of a biofilter for ammonia removal: Model parameters analysis and model validation

A dynamic model to describe ammonia removal in a gas-phase biofilter was developed. The mathematical model is based on discretized mass balances and detailed nitrification kinetics that include inhibitory effects caused by free ammonia (FA) and free nitrous acid (FNA). The m I a s ©

متن کامل

Development and Validation of a Dynamic Complex Model for Ammonia Removal by Gas-Phase Biofiltration

In this study a general dynamic biofiltration model to describe ammonia removal in a gas-phase biofilter is developed. The mathematical equations are based on discretized mass balances and detailed nitrification kinetics that include inhibitory effects caused by free ammonia (FA) and free nitrous acid (FNA). The model was able to predict experimental results operation under different loading ra...

متن کامل

Effects of dynamic operating conditions on nitrification in biological rapid sand filters for drinking water treatment.

Biological rapid sand filters are often used to remove ammonium from groundwater for drinking water supply. They often operate under dynamic substrate and hydraulic loading conditions, which can lead to increased levels of ammonium and nitrite in the effluent. To determine the maximum nitrification rates and safe operating windows of rapid sand filters, a pilot scale rapid sand filter was used ...

متن کامل

Two-stage biofilter for effective NH3 removal from waste gases containing high concentrations of H2S.

A high H2S concentration inhibits nitrification when H2S and NH3 are simultaneously treated in a single biofilter. To improve NH3 removal from waste gases containing concentrated H2S, a two-stage biofilter was designed to solve the problem. In this study, the first biofilter, inoculated with Thiobacillus thioparus, was intended mainly to remove H2S and to reduce the effect of H2S concentration ...

متن کامل

Microbial degradation of livestock-generated ammonia using biofilters at typical ambient temperatures.

The purpose of this research was to neutralize livestock-generated ammonia by using biofilters packed with inexpensive inorganic and organic packing material combined with multicultural microbial load at typical ambient temperatures. Peat and inorganic supporting materials were used as biofiltration matrix packed in a perfusion column through which gas was transfused. Results show the ammonia r...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2006