Applications of Anaerobic Baffled Reactor in Wastewater Treatment using Agriculture Wastes
Document Type
Article
Publication Date
Summer 5-5-2019
Abstract
The use of anaerobic baffled reactor for wastewater treatment along with its development, applicability and possible future application is presented in this research. The reactor design has been developed since the early 1980s and has several advantages over well-established systems such as the up flow anaerobic sludge blanket and the anaerobic filter. From these advantages are better resilience to hydraulic and organic shock loadings, longer biomass retention times, lower sludge yields, and the ability to partially separate between the various phases of anaerobic catabolism. The latter causes a shift in bacterial populations allowing increased protection against toxic materials and higher resistance to changes in environmental parameters such as pH and temperature. The physical structure of the anaerobic baffled reactor enables important modifications to be made such as the implementing of an aerobic polishing stage, resulting in a reactor that can treat difficult wastewaters which currently require several units, ultimately significantly reducing capital costs. The main objective of this study is to investigate the behavior of three reactors and verify the use of the bio- film in improving treatability, to reach the mentioned goal two types of bio-films; ficus fiber and palm fiber were used and investigated. However, during the study many significant factors were considered such as: temperatures, number of baffled in reactor, shape baffled and location of reactor to avoid lighting. For all tested reactors, influent COD concentration, influent pH, temperature in the reactor effluent COD concentration effluent pH and flow rate, in all the reactor stages (start-up, steady state, shock load and final stage), and effluent COD concentration, pH in all compartment from reactors during shock load stage were measured and recorded. Test results revealed that the ABR (C) scenario gave the highest COD % removal comparing with the other two scenarios
Recommended Citation
hassan, aya, "Applications of Anaerobic Baffled Reactor in Wastewater Treatment using Agriculture Wastes" (2019). Civil Engineering. 166.
https://buescholar.bue.edu.eg/civil_eng/166
Comments
In this paper we have reviewed different techniques for the anaerobic wastewater treatment using agriculture wastes. The anaerobic baffled reactor with palm fiber bio- film ABR(C) system gave the highest COD% removal comparing with the other systems (conventional anaerobic baffled reactor and anaerobic baffled reactor with ficus fiber bio-film) due to large void ratio in palm fiber media, also may be surface type for this media Creates a suitable surface for the breeding of bacteria. The sudden increase in the influent COD concentration (shock load) decreased the COD removal efficiency in all scenarios. Also, the COD removal efficiency decreased with time. The use of backing media in the anaerobic baffled reactor improves the removal efficiency according to the type of media. Palm fiber improves the removal efficiency by 27 %, while the ficus fiber improves the removal efficiency of the anaerobic reactor by 20 %. The use of media in the anaerobic baffled reactor gives an acceptable efficiency in all compartments due to the presence of media. Increasing the influent COD concentration decreases the effluent pH value. Also, the pH value decreased with time which leads to decrees the COD % removal. It must maintain on the temperature and pH during the period of treatment and keep the characteristics of attached media for order to be ABR (c) the highest COD % removal. Results showed that decreasing pH value had an adverse effect on treatment efficiency for all cases.