Comparative Study of Biofilters Application for Ammonia Elimination from Industrial Sites

, M.Sc. Thesis Sharif University of Technology Pouri, Hamed (Author) ; Shayegan, jalaloddin (Supervisor) ; Massoudinejad, Mohammad Reza (Supervisor)

Abstract

In this study, for removing ammonia from air, biofilters which is suitable method for removing odors, volatile organic compounds and toxic materials are used. Biofiltration is an efficient, easy and cost effective, environmental friendly process for degradation of ammonia from waste air. Aim of this study is comparative study of biofilters application for ammonia elimination from industrial sites.In order to remove ammonia, two columns with 14 cm inner diameter were used. One of the columns is filled with vermicompost and mineral shell (mineral shell : vermicompost, 1 : 4) and another column is filled with concentrated sludge and scallop (scallop : concentrated sludge, 2 : 3). Each of the...

The Biological Removal of Methane of Contaminated Air

, M.Sc. Thesis Sharif University of Technology Forouzesh Pour, Ali (Author) ; Shaygan Salek, Jalaloddin (Supervisor) ; Rashtchian, Davood (Co-Advisor)

Abstract

Trash production in Iran is increasing. The majority of trash is being buried and that induces the emission of methane gas (CH4), which is a greenhouse gas. In this thesis, the aim was mostly to remove methane from greenhouse gases by applying several cheap and abundant substances. For this purpose, a biofilteration system was provided. It has been tested using two packings: straw and plastic. To provide the necessary materials for bacterium growth, a nutrient solution was used. The results of this work have revealed that plastic proved to be more effective than another substance and the removal percent obtained was about 61%. The result for straw was 42%. Furthermore, the experiments were...

Investigating the Reduction of Sewage Sludge Volume in Kish slandRefineries with the Help of Mud Eating Worms

, M.Sc. Thesis Sharif University of Technology Heidari, Moosa (Author) ; Hashemian, Jamal (Supervisor)

Abstract

A major environmental challenge for wastewater treatment in Iran and other countries is the disposal of excess sludge produced during the biological process. This project has been developing and testing a technology that will help to overcome this challenge in Kish Island wastewater plant. Results demonstrate it can perform highly effective treatment of municipal wastewater while producing low levels of sludge.Applicationofvermifiltrationfor treatment of wastewater sludge using the Eiseniafetida earthworm species. The earthworms’ gut acted as a biofilter whereby there was reduction in the sewage wastewater’s solid and liquid organic and inorganic wastes through ingestion and expelling these...