Unveiling wastewater treatment methods in the petrochemical industry

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This post was last edited by Green Lotus on 2020-11-13 at 22:35. Introduction: As the \"blood of industry,\" oil continues to play a crucial role in the modern world. Whether as a power fuel or as a chemical raw material, there remains a significant shortage of various products from the petrochemical industry. However, environmental concerns pose restrictions on the production of various petrochemical products. The ability to overcome the challenges associated with the treatment of petrochemical wastewater will determine whether petrochemical companies can achieve further development in the future, and it is even related to their very survival. Challenges in the treatment of petrochemical wastewater: In the petrochemical industry, there is a great variety of wastewater types, which can generally be classified into the following categories: 1) Oil-containing wastewater. The volume of such wastewater is very large, and it contains crude oil, light oils, heavy oils, production catalysts, etc.; it often exists in the form of emulsions or oil-in-water systems, making it one of the most difficult types of wastewater to treat in the petroleum industry today. 2) Sulfur-containing wastewater: The volume of sulfur-containing wastewater is low, but the concentration of pollutants is high. In addition to containing large amounts of hydrogen sulfide and other substances that give off a pungent odor and are highly toxic to organisms, sewage cannot be processed by ordinary sewage treatment systems; it requires special methods and equipment for treatment. 3) Saline wastewater: Saline wastewater represents a type of wastewater for which there is an urgent need to reduce operating costs. Conventional three-effect evaporation or MVR technologies involve high operating costs and significant energy consumption; moreover, high-salinity wastewater is highly harmful to conventional biochemical systems, so other effective treatment methods need to be found. 4) Wastewater with high COD: In the petrochemical industry, especially in industries that produce downstream products such as synthetic plastics and synthetic rubbers, the wastewater contains large amounts of benzene derivatives and phenols. Such wastewater has a low B/C ratio, making it difficult to treat through biological methods. Traditional oxidation or advanced oxidation techniques cannot resolve the issue in just one step, and they may also generate large amounts of hazardous waste; therefore, new methods are needed to address this problem. 5) High-chroma wastewater: Some wastewater that has undergone partial biological treatment or other types of pretreatment still has a certain level of color. At this point, the effect of oxidation is minimal; biological treatment cannot effectively remove this color, so adsorption treatment becomes the best option. Heip’s customized processing technologies: Jiangsu Heip Functional Materials Co., Ltd. is dedicated to the research and development as well as industrialization of high-performance adsorbents and catalyst products. In 2018, it was recognized as the Suzhou Engineering Technology Research Center for Adsorption and Catalytic Functional Nanomaterials. Through years of independent research, the company has achieved international leadership in areas such as ion exchange technology, adsorption technology, and hybridization techniques for nanoinorganic materials. It has managed to develop a range of adsorption and catalytic products that are successfully applied in environmental protection and resource recycling fields. With its series of self-developed high-performance adsorbents and catalyst products as the core, along with its own proprietary process technologies, Haipu has become a professional provider of green environmental protection solutions. The special adsorption materials developed by Haipu Company are capable of selectively adsorbing various types of harmful substances present in wastewater. It is possible to design wastewater treatment methods specific to different process stages; for example, pollutants such as benzene and phenols, which are common in the petrochemical industry, can be adsorbed using specialized adsorbents. After reaching adsorption saturation, a specific desorbent is used to desorb the adsorbent material, allowing it to be regenerated, and this process is repeated continuously. The process flow for wastewater adsorption treatment is shown in the figure below. http://www.jshpfm.com/uploads/allimg/201101/1-201101224405449.png