Group 1 - The State Intellectual Property Office of China has granted a patent for a "wastewater treatment system" to China National Offshore Oil Corporation Chemical Co., Ltd. and China National Offshore Oil Corporation Hegang Coal Chemical Co., Ltd. The patent was announced with the authorization number CN223087715U, and the application date was August 2024 [1] - The wastewater treatment system includes a sequence of connected units: a biochemical unit, a reclaimed water unit, and an advanced oxidation unit. The biochemical unit consists of multiple connected biochemical treatment pools [1] - The reclaimed water unit features a series of connected ultrafiltration membrane devices and reverse osmosis membrane devices. The outlet of the biochemical unit connects to the inlet of the ultrafiltration device, and the reverse osmosis product water connects to the circulating water system [1] Group 2 - China National Offshore Oil Corporation Chemical Co., Ltd. was established in 2000, with a registered capital of 461 million RMB. The company has invested in 18 enterprises and participated in 2,959 bidding projects, holding 206 patents and 12 trademark registrations [2] - China National Offshore Oil Corporation Hegang Coal Chemical Co., Ltd. was founded in 2006, with a registered capital of 233.56 million RMB. The company has invested in 1 enterprise and participated in 1,378 bidding projects, holding 38 patents and 6 trademark registrations [2]
中海石油化学等取得污水处理系统专利，涉及废水处理技术领域