Banca de DEFESA: PATRÍCIA SANTOS SILVA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : PATRÍCIA SANTOS SILVA
DATA : 06/11/2019
HORA: 00:08
LOCAL: sala 319
TÍTULO:

BIOLOGICAL TREATMENT OF CASSAVA PROCESSING: INCENTIVE SUSTAINABLE FLOUR PRODUCING UNITS

PALAVRAS-CHAVES:

 anaerobic process, quality of life, agroindustrial, treatment

PÁGINAS: 107
GRANDE ÁREA: Outra
ÁREA: Multidisciplinar
RESUMO:

Cassava is a prominent crop in Brazil, with high production and consumption. From their processing flour or starch comes as final products, from different types of processing. In this context, waste is generated without proper disposal, such as handling and wastewater from the tub. These effluents are rich in organic matter, with low pH and cyanide presence. Thus, the objective of this study was to evaluate the efficiency of biological treatment of effluents, as a form of sustainable incentive to flour producing units. The experiment consisted of three systems, using facultative lagoons (L1, L2 and L3) and UASB reactors (U1, U2 and U3) where each one treated tributary with the following proportions: (A1) raw sewage and tub water (6: 4); (A2) raw and handling sewage (9: 1) and (A3) raw and sewage sewage (6: 3: 1). All were monitored and evaluated by physical and chemical analyzes, which were diluted to 150 liters / per week of preparation. The characterization of the manipueira presented the following results: pH (28,7 ° C) 4,51; total cyanide 297 mg. L-1 and COD of 42101 mg. L-1. While the results of puba water were found: pH (27,2 ° C) 3,85; total cyanide 27.6 mg. L-1 and COD of 11124 mg. L-1. The pH stabilization of the ponds in relation to the tributary presented in all five treatment start cycles within the recommended for the buffer capacity of the UASB reactors. Regarding CN, the lagoons (L1, L2 and L3) removed 79%, 70% and 69% respectively. COD removal was obtained around 60% for system 1 (L1 - U1), 59% for system 2 (L2 - U2) and 55% removal in system 3 (L3 - U3). The treated effluents from the UASB reactors demonstrated important NTK, NH4 +, Pt and PO43- contents for reuse in fertigation. Therefore the treatment systems showed technical and economical viability in the use of biological processes in the elevation of the pH and the removal of cyanide, as well as in the environmental quality with the removal of most of the biodegraded organic matter.

MEMBROS DA BANCA:
Interno - 2142681 - BRUNO APOLO MIRANDA FIGUEIRA
Externo ao Programa - 2137442 - CARLOS CELIO SOUSA DA CRUZ
Presidente - 2143922 - ISRAEL NUNES HENRIQUE
Externo à Instituição - JOSÉ TAVARES DE SOUSA - UEPB