Diseño y construcción de un sistema prototipo de electrocoagulación para tratamiento de aguas residuales de procesos de tinturado de empresas textiles

Abstract

Design and construction of a prototype system by waste water treatment of textile industry tincture process is presented in this document by electrocoagulation method and electrolytic effect, industrial control, electronic and mechanic. The system begins with the feeding residual water by hydraulic pump action, it makes waste water flows through middle inch pipeline to homogenization container, then a flowmeter detects water movement and it proportionally changes a pulse width modulated signal and control Buck converter, which in turn, gives energy to electrodes arranged into electrolytic cell in which to circulates current through the solution, destabilizing the tincture molecules and getting electrocoagulation process. Later, the Flow is directed to a container where it’s dosed a flocculant liquid facilitating the filter process which starts when second hydraulic pump send residual water with pressure to filter, where flocs formed are recollected leaving the liquid ready to its evacuation without ambiently damages. The system is configured by electronic controls and interfaces to stablishes needed parameters. Mechanic parts, electronic cards and electrical circuitry have been developed as part of the system. The tests have been carried out with waste water samples coming from different textile companies to evaluate DBO and DQO levels of residual water, after treatment and to check if these are between 120 and 240 mg/l respectively.