During the production of energy from large combustion plants will cause the combustion process to air pollution stands out various gases. That gases are quite harmful on the urban ecosystem. Wet flue gas desulphurisation systems are preferred because of their applicability and easily operable structures without a deep information. The Station flue gas purification systems are designed as a gas desulphurisation process. Each of these units has their own chimney and fluepurification systems. In flue gas purification systems, SO2, SO3, dust and heavy metals are purified. SO2 which occurs by fuel burning can be increased in flue gas purification systems with 98% efficiency. The process is worked on the basis of spraying the lime milk produced by grinding the limestone in the mill and mixing it with water, into the waste gas in the washing tower. The lime milk polluted after spraying process is segregated by way of hydro cyclones and discarded. The lime milk which diminishes is taken from the stock tank and given to the system. SO2 gas which enters in the flue gas purification system can be increased to 500 mg/Nm3. It is seen how important the gas desulphurisation process in preventing environment pollution and for a healty landscape. This study has been presented at the II. International Sustainable Buildings Symposium in the same form.