Resumo:
The granting of the right to use water resources is an important instrument for the
management of the Water Resources Policy, as its objective is to guarantee the
quantitative and qualitative control of water uses and the effective exercise of rights of
access to water. Among the many multiple uses of water, there is aquaculture, which plays
an important role in providing high-quality proteins and is the sector that has grown the
most in the last 20 years. The expansion of the activity has caused a series of
environmental impacts, mainly those related to the inadequate disposal of untreated
effluents, contributing to the pollution of water resources. The general objective of this
work is to contribute to the improvement of the criteria adopted for granting the release
of dilution of aquaculture effluent. It presents an assessment of the conditions and
standards for releasing aquaculture effluents and the criteria for analyzing grant requests
for effluent dilution, from the 8 Brazilian states that led the aquaculture production
ranking in Brazil, in 2022, through the evaluation of current legislation, covering both
national and state levels. As a result, it was identified that among the 8 states studied, only
Paraná and Ceará have specific legislation on the conditions and standards for releasing
aquaculture effluents, of which the parameters adopted and the maximum value for
releasing the effluents were analyzed. effluents for aquaculture activities. Regarding the
effectiveness of these management instruments, the concentrations of the standards,
quantification of the parameters adopted in each state and the maximum concentrations
most used were compared. With all the data generated, a draft technical note was prepared
with proposals for improving the conditions and standards for releasing effluents and the
criteria adopted for the analysis of grant applications for the dilution of aquaculture
effluents in excavated ponds. In order to contribute to the management and regulation of
water resources.
