STUDY CLEANSING EFFLUENT FROM THE TEXTILE INDUSTRY THROUGH A MEMBRANE BIOREACTORSummary: The objective of this thesis is to study the purification of effluent from the cotton textile industry through a membrane bioreactor, and their evaluation compared with a conventional activated sludge treatment. To achieve these goals and establish a design methodology effluent synthetic textile sector dyeing and finishing of cotton textiles and blends, the results obtained to assess the effluent synthetic get that is a representative of the effluent textile fabrics and finishes cotton fibers and their mixtures, composed mainly of the fraction of the COD is slowly biodegradable, so the treatment of waste water are required to individuals operating conditions as high and low SRT relations food / microorganisms. Once the effluent has been characterized synthetic began assessing their treatment in two types of process and the same relationship with food / microorganisms, the first is the conventional activated sludge process (FA). In this evaluation we get the process of BRM, removal efficiencies obtained from: 90% COD, 95% OSH, 87 â 92% NKT. The activated sludge process has a range of disposal: 54 â 70% COD, 32-43% TSS and 58 â 62% NKT. From the comparison of the two processes concluded that the process BRM is a 22% more efficient in removing the organic load that the conventional process sludge activados.El process BRM removes a 33% more than a conventional color AF also according to the analysis of the fouling of membranes, there was no fouling irreversible and recommends a time filtration 40 minutes. It is important to determine the kinetic constants of biomass, from this analysis that we have to get the process BRM values: Maximum utilization of substrate k = 0.47 mgCOT / mgSSLM, steady average speed Ks = 584 mgCOT / L ratio maximum output of sludge Y = 0.39 mgSSLM / mgCOT, coefficient of decomposition endogenous kd = 0.01 d-1, maximum specific growth rate mm = 0.16 d-1. The kinetic constants of biomass activated sludge process are: Maximum utilization of substrate k = 0.09 mgCOT / mgSSLM, steady average speed Ks = 108 mgCOT / L, maximum output coefficient sludge Y = 0.67 mgSSLM / mgCOT, coefficient of decomposition endogenous kd = 0.03 d-1, maximum specific growth rate mm = 0.06 d-1. The pilot activated sludge plant produces 43% more sludge, a membrane bioreactor. The utilization rate of substrate from biomass process of membrane bioreactor is a 80% higher than that of an activated sludge process. Finally believe developing all kinetic parameters and mathematical modeling of the two processes and used in the design of two purification plants, the first consisting of a primary process, activated sludge treatment, physico-chemical treatment of coagulation and flocculation line sludge; the second consists of a primary treatment, a membrane bioreactor and line sludge. In this design, we can conclude that the volume of biological reactor in a process of FA is a 62% higher than the BRM process. Besides the area for the implantation of the WPP AF is much larger than the area needed to implement the WPP BRM. And with the design conducted a study of costs of the two processes where we concluded that the constructive cost of the WPP FA is a 20% cheaper than the WPPs of BRM, however even though the cost is higher constructive with the WPP BRM is very possible that it can be amortized taking into account operating costs.
