Ouyi Tiancheng is an engineering technology environmental-protection company that uses independently developed process technologies to solve the three major pain points of difficult treatment, high concentration and high cost. The company provides clients with advanced processes and integrated environmental treatment solutions for wastewater and waste-gas projects.

The company has core technologies for wastewater and exhaust-gas treatment in petroleum, chemical, pharmaceutical and municipal industries. Based on rich engineering experience, it upgrades single-point solutions into full-chain comprehensive treatment plans. Services include technical consulting, process innovation, patented packaged equipment development and manufacturing, EPC contracting and operation support. Since its establishment, the company has completed hundreds of design and construction projects.

Ouyi Tiancheng takes pursuing advanced technology and professionally treating the environment as its mission. It follows the latest environmental-protection trends and has built long-term cooperation with domestic and overseas universities and design institutes, including the Research Center for Eco-Environmental Sciences of the Chinese Academy of Sciences, CNPC East China Design Institute, Sinopec Luoyang Engineering Co., Ltd., Purdue University, Qingdao University of Technology and Liaoning University of Engineering and Technology.

After more than ten years of independent R&D and upgrading, the company has formed technologies for difficult wastewater and exhaust-gas treatment, including HO advanced oxidation deep treatment, petrochemical wastewater and waste-gas biological purification, oily wastewater pretreatment, VOCs recovery and treatment, and autotrophic denitrification. These are supported by patented products such as ozone advanced oxidation equipment, mechanical oil separation equipment and high-efficiency dissolved-air flotation systems.

Guided by reliable service and high-quality products, and by an upstream-to-downstream model of process technology + customized equipment, the company helps each client reduce upfront investment, improve treatment performance and keep facilities stable in long-term operation. Every environmental project is delivered responsibly, in accordance with specifications and standards, so that the service meets user requirements and earns client recognition.
With technology as the guide, quality as the guarantee and credibility as the foundation, Ouyi Tiancheng sincerely looks forward to working with partners to create cleaner water and clearer skies.