Typical Case

CNOOC Tianye Chemical’s Polyformaldehyde Wastewater Treatment Project

Project Name: Polyformaldehyde Wastewater Treatment Project of CNOOC Tianye Chemical

Project scale: 2500 m 3/d

Commissioning date: Oct, 2007

Treatment process: Anaerobic + aerobic

Project Overview: Formaldehyde-containing wastewater generated during polyformaldehyde production is characterized by high organic concentration, complex organic compounds, and significant toxicity, which can adversely affect biological treatment processes. Therefore, these factors must be fully considered in the process design. Drawing on our company’s proven experience in treating formaldehyde wastewater for the Yuntianhua Group, BODA employs a combined UASB reactor–aerobic treatment process. With proper control of key technical parameters throughout the process, the treated effluent can meet either discharge standards or water-recycling standards.

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Coal-to-Natural-Gas Technological Transformation Project of Yunnan Yuntianhua Co., Ltd.

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