Abstract
The aim of this chapter is to evaluate if domestic wastewater treated by various wetland systems can be successfully recycled to irrigate generations of commercial crops such as Chili (Capsicum annuum) grown in compost within a laboratory environment to obtain a cultivar adapted to domestic wastewater. The vertical-flow wetlands treated domestic wastewater well, meeting the irrigation water quality standards for most water quality parameters, except for phosphorus, ammonia-nitrogen, potassium, and total coliforms. Chili generations were grown successfully when applying wastewater treated by wetlands and organic soil. High Chili generation yields concerning economic return were linked with wetlands containing small aggregates with long contact and resting times and fed with a high inflow loading rate (undiluted wastewater), releasing more nutrients into their effluent producing the best fruit quality with respect to weight, length, and width resulting in a greater marketable profit of about 46% compared with the others.
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