With the growing demand on energy, especially on clean energy, the marketing share of nuclear power has been steadily increased. Oily wastewater produced in the normal operation and maintenance of nuclear power plant mainly comes from the oil equipment and system, including transformer oil and lubricating oil. As direct discharging of oil wastewater into sewage treatment station would cause more difficulties and higher sewage treating capacity. Hence, it is very necessary to set up oily wastewater separation system in nuclear power plants. LAND ECO is qualified as one of the main suppliers of China Nuclear Power Engineering Co., Ltd. and China General Nuclear Power Corporation.