The appropriate sewage management is the second important problem, which has to be solved. As we have mentioned earlier, we have gray water as sewage only. Almost the whole content of nitrogen — compounds originates from black water, which is eliminated in our case. In our case the household sewage contains water from the kitchen and from the bathroom only. So, our sewage contains only remainders of soap and different tenzio active materials. This materials can be decomposed easily through biological method. This water is collected into a large tank and cleaned with the help of microorganisms. The wasted water is circulated and aired with the help of an electrical pumps. Solar cells supply the electrical energy for these pumps. We have installed four moduls of amorphous silicon solar cells type DS40 maden by Dunasolar [3]. These solar cells serve not only as power supplies but serve as shadowing over the windows, too.

References

[1] A. Nemcsics; KukaBuvar IX 2003/4 pp. 16-17 (in Hungarian)

[2] A. Nemcsics; KukaBuvar X 2004/1 pp. 14-16 (in Hungarian)

[3] www. dunasolar. hu