DALTRO FILHO, J.; http://lattes.cnpq.br/6181106295956780; DALTRO FILHO, José.
Resumen:
Experiments with the Jar-Test equipament are carried out to simulate the physico chemical treatment (,coagulation, flocculation and sedimentation) of pilot lagoon effluents (one facultative and one maturation lagoon) , in order to evaluate the efficiency of the treatment in terms of removal of biochemical oxygen demand , suspended solids,
feacal coliforms , turbidity and total phosphate. The applied coagulants were aluminium sulphate, calcium and magnesium hydroxyd e and the polyetectrolyte wisprofloc 20. Differents values of the pH were tested. The minimum concentrations of biochemical oxygen demand and suspend solids defined the optimum coagulants doses and the optimum pH. A study is carried out to choose the most efficient and economical coagulant. A comparation is made between the efficiencies of the physico chemical treatment and the biological maturation process.