@phdthesis{PulgarinMonsalve2021, author = {Pulgarin Monsalve, Isabel Cristina}, title = {Fundamentals of process design and control of Anaerobic Sequencing Batch Gas-Lift reactor regarding the mixing process}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-55693}, school = {BTU Cottbus - Senftenberg}, year = {2021}, abstract = {The Anaerobic Sequencing Batch Reactor (ASBR) operates by sequential batches, has been studied as an alternative treatment for different systems because of their versatility. The ASBR is applicable for the conversion of a wide variety of organic wastewaters to methane and carbon dioxide (biogas). The main factors affecting the overall performance of the ASBR are: agitation, Substrate/Biomass ratio, geometric configuration of the reactor and the feeding strategy. In this research the strategy agitation was carried out by used of a gaslift system coupled to an ASBR. The aim of the research was the creation of bases for the design and process control of an Anaerobic Sequencing Batch Gaslift Reactor on a laboratory scale in order to find the optimal operating regime and optimize the process. The type of gaslift system to be used is an internal loop with a concentric draught tube configuration, which enables the gas may be sparged either the draught tube or the annulus. The simple design of a gas lift reactor permits less expensive operation, requires less maintenance, low investment costs, low interference and low power consumption. Scientific and technical objectives of the research include the analysis of macro geometric dimensions of the reactor, developing innovative solutions for optimization of mixing process (gaslift mixing), analysis of the hydrodynamics and the homogenization inside of the reactor. This study also includes the flow determination in the riser, the evaluation of the liquid circulation velocity in the downcomer and the influence of the vertical draft tube and the effect of top and bottom clearance. Also, the goal was to find an adequate mixture to not destroy microorganisms but to allow the sedimented biomass and undigested solids may rise quickly and mixed with the feed substrate.}, subject = {Biogas; Bioenergy; Anaerobic Sequencing Batch Reactor; Gas-Lift Reactor; Mixing Process; Biogas; Bioenergie; Anaerobic Sequencing Batch Reactor; Gas-Lift Reactor; Mischverfahren; Abwasserreinigung; Bioenergieerzeugung; Biogas; SBR-Verfahren; Mischen}, language = {en} }