Wastewater treatment systems in fish ponds include biological treatment of wastewater flowing directly into the pool. The treated water could be used for irrigation, but there are public health concerns to consider.

1. Assuming that fish pathogens do not endanger humans, what threats should be considered?why?

2. How would you characterize the causes of the hazards and how would you avoid them?

c. How will you assess the impact of biological treatment of the wastewater on the hazardous factors and their impact on the irrigated soil and crops?

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