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  1. A PVC-pipe device as a sanitary barrier for improving rainwater quality for drinking purposes in the Brazilian semiarid region
  2. Hydraulic retention time influence on azo dye and sulfate removal during the sequential anaerobic–aerobic treatment of real textile wastewater
  3. The influence of excess sludge discharge on the performance of a full-scale UASB reactor
  4. Water quality and microbial diversity in cisterns from semiarid areas in Brazil
  5. Textile effluent treatment in a UASB reactor followed by submerged aerated biofiltration