Alternative to reduce drinking water consumption in the plastics processing industry
DOI:
https://doi.org/10.6008/CBPC2179-6858.2020.001.0012Keywords:
Capture, Payback, Reception, Roof, Economic viabilityAbstract
The utilization of rainwater has been used to reduce the environmental impacts caused by the most diverse industrial sectors, since these waters can be used in a part of the process or in total replacement of the required water, varying according to the demands and size of the plant or system used. This work aimed to evaluate the economic and technical feasibility of the use of rainwater in the process of production of preforms (PET) reducing about 20% of drinking water consumption in a manufacturing industry located in the municipality of Cabo de Santo Agostinho, state of Pernambuco. For this purpose, different design methods were tested, as well as physical-chemical analyzes of the water collected in the region. The choice of the most appropriate method was based on the criteria of higher confidence index, percentage of service demand about than 20% and lower payback. The obtained results indicated that the water demand of the evaluated industry presents a daily average of consumption equal to 47.04 m3 and the possibility of implantation of the system with capacity of 250 m3, with rainwater harvesting potential of the order of 20.0 % of total demand, with an estimated savings of $ 14.695,5 per year and payback of 30 months
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