The idea of spreading the wastewater into the scrub forest after the wastewater had been cleaned off the inorganic sediments and materials and removing the toxicant chemicals is indeed a very creative idea as it will have more positive ecological effects.
First, the scrub forest will become very productive and there will be the growth of several species of flora thus the beauty of the land. The presence of beautiful green vegetation will on the other hand provide food for the fauna. Therefore the forest will be inhabited by different herbivorous animals since there is ready food. The existence of herbivores will consequently attract carnivores in the forest that will feed on the herbivores.
The presence of animals in the forest also promotes the growth and nourishment of the forest. The waste product from the animals provides manure that boosts the growth of the vegetation. The animals also die and decay thus providing manure creating rich soils.
The presence of precipitation from the trees will be a source of rain and the temperatures in the area will also go down due to convection currents. The occurrence of rain in the area will lead to the formation of streams in the forest. Some of the plants in the forest can also be a source of food for the community living around the forest. The plants may also be a source of herbs for treating various diseases in the community. In addition, the forest will provide fuel and timber.
The forest can also be used for economic activities. The forests can later be transformed into a game park or an animal zoo which can earn the government a substantial amount of revenue. All these economic activities will create employment opportunities for the general populace.