Urivald Pawlowsky

Avaliação de tecnologias avançadas para o reúso de água em indústria metal-mecânica

With the objective to reduce the water consumption and the discharge of effluents in a metal industry, a technical and economical evaluation of five treatment technologies was proposed in order to reuse the effluents. Four sites for water reuse were chosen and for each of them criteria were suggested. It was evidenced that in the adsorption with activated carbon and reverse osmosis the effluent treated by these processes could be reused and, with the flowrate projected of 2.5m3/h, the cost attained US

Alternativas de minimização de resíduos em uma indústria de alimentos da região metropolitana de Curitiba

1.14/m3 and US

Oily diatomite and galvanic wastes as raw materials for red ceramics fabrication

1.70/m3 respectively. For the ozone and chlorine dioxide, even so the effluent was disinfected, gave only satisfactory results and the cost attained US

Incorporation of industrial wastes as raw materials in brick's formulation

0.54/m3 and US

Manufacture of a construction material using the physicochemical properties of ash and sludge wastes from MDF board production

0.71/m3 respectively. For the treatment with coagulation/flocculation, all the analyzed parameters were successful in two reuse places, with exception of the TDS. The cost for this technology attained US

Environmental performance evaluation – A proposed analytical tool for an industrial process application

1.57/m3

Environmentally clean ceramics from printed circuit board sludge, red mud of bauxite treatment and steel slag

This work was developed in a food industry located in the metropolitan area of Curitiba, Parana State. It is based in a reduction of quantity and/or toxicity of the generated polutants in the factory and has as basis the pollution control in its source. If the reduction of the waste in its source is not possible, the recycling strategy would be used. This work was developed in four stages. The first stage was the description of the industrial plant. In the second stage was done the assessment and characteristics of the wastes. The third stage was the waste priorization with a mathematical model to obtain the order of minimization. The organic natural waste, even from the productive process as from the wastewather treatment plant, were selected as priorities. The fourth stage of the waste minimization programme was the proposition of the minimization measures. The main recomendations were:: training the employers, ajustment and control at the time of the equipments, temperature, flow, and raw material specification control at the time of reception. The waste minimization is a good option for the environmental management of the food industry because besides reducing costs with waste disposal and treatment, it also increases production process efficiency.