Minimization of Pollution Concentration on a Given Time Interval
for the Waste Water Cleaning Plant

<table>Region, which is guaranteed by Lemma <a href="https://static.hindawi.com/articles/jcse/volume-2010/712794/figures/#lem8">9</a>.</table>

Journal of Control Science and Engineering

Figure 3: Minimization of Pollution Concentration on a Given Time Interval
for the Waste Water Cleaning Plant 