Artigo de Periódico
Taking advantage of storm and waste water retention basins as part of water use minimization in industrial sites
Fecha
2011Registro en:
0921-3449
v. 55
Autor
Esquerre, Karla Patrícia Santos Oliveira Rodríguez
Kiperstok, Asher
Mattos, Mario Cezar
Cohim, Eduardo
Kalid, Ricardo de Araújo
Sales, Emerson Andrade
Pires, Victor Matta
Esquerre, Karla Patrícia Santos Oliveira Rodríguez
Kiperstok, Asher
Mattos, Mario Cezar
Cohim, Eduardo
Kalid, Ricardo de Araújo
Sales, Emerson Andrade
Pires, Victor Matta
Institución
Resumen
A methodology for water use minimization has been developed by the Clean Technology Network of
Bahia over a 10 year period in joint cooperative programs with the chemical, petrochemical and copper
metallurgy industries located in the largest Industrial Complex in Latin America, in Camac¸ ari, Bahia,
Brazil. The methodology comprises a set of tools including reconciled aqueous stream balances, database
of aqueous streams; large scale training leading to the identification of water minimization alternatives
in the processes, water reuse optimization approaches; geographical information systems as well as,
consideration of the region’s hydro and hydro-geological characteristics. The results of a study carried
out to assess the possibility of using storm and wastewaters for industrial use is presented in this paper.
The inorganic system is composed by three water reservoirs (basins) receiving stormwater contaminated
with inorganic effluents, and occasionally with organics. These basins have been operated to control
water flow inputs according to the capacity of the pumping outlet systems before their discharge to a
submarine outfall. A mass balance was performed with historical updated data to assess water availability
from the basins based on the daily volume variation and flow rate of inorganic effluent from 2001 to 2007.
The study identified the possibility of recovering about 1140m3/h of the overall 5400m3/h consumed
by the Industrial Complex at the moment. Organizational changes in the present effluent disposal and
stormwater harvest systems will be required in order to maximize water recovery for industrial use.