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Electrochemical Wastewater Treatment Equipment: Designed for Treating Oil-Containing Petrochemical Wastewater

Quick Details

The oily wastewater generated during petrochemical refining, oilfield exploitation, and oil product storage and transportation processes has an extremely complex composition, containing free oil, dispersed oil, emulsified oil, and soluble petroleum hydrocarbon organics. Characterized by high chemical oxygen demand (COD) and difficult oil-water separation, such wastewater also presents multiple challenges to traditional treatment processes (e.g., dissolved air flotation, demulsification, biochemical methods), including high consumption of demulsifiers, large sludge output, limited treatment efficiency for emulsified oil, and significant vulnerability of operational stability to shock loads.

To address the treatment difficulties of petrochemical oily wastewater, we have launched our Electrochemical Wastewater Treatment Equipment. Adopting a synergistic technology of electrochemical advanced oxidation and demulsification, this system is specially designed for efficient emulsion breaking and degradation of various petroleum hydrocarbon pollutants, providing a clean and high-efficiency treatment solution that eliminates reliance on large doses of chemical agents and avoids the risk of secondary solid waste.

Core Advantages of the Equipment

High-Efficiency Electro-demulsification & Advanced Oxidation for Source Pollution Reduction

Driven by electrochemical reactions, the equipment generates micro-bubbles and strong oxidizing species, enabling highly efficient electro-demulsification to disrupt stable oil-water interfaces and facilitate effective aggregation and separation of oil substances. Meanwhile, the produced hydroxyl radicals and other reactive species can deeply oxidize and decompose refractory organics such as soluble petroleum hydrocarbons and polycyclic aromatic hydrocarbons (PAHs). The entire process requires no addition of traditional chemical demulsifiers or large amounts of flocculants, eliminating the generation of chemical sludge and secondary pollution at the source, and achieving cleaner oil-water separation and pollutant degradation.

Compact Skid-Mounted Design for Harsh Industrial Environments

Featuring robust, factory pre-assembled skid-mounted modules, the equipment has a highly integrated structure with a small footprint. It can be fully and rapidly deployed in petrochemical plants with limited space and stringent environmental requirements, allowing quick installation and commissioning. This design is particularly suitable for retrofitting existing facilities, offshore platforms, temporary treatment stations, or as an emergency response system.

Flexible Multi-Functional Configuration to Fully Cover Treatment Requirements

The equipment’s operational strategy can be flexibly adjusted according to influent water quality and final discharge or reuse standards:

As a Core Pretreatment Unit: It efficiently breaks down emulsified oil, significantly reduces oil content and COD levels, and alleviates the load and pollution risks of subsequent biochemical or membrane treatment systems.

As an Advanced Polishing Unit: It performs advanced oxidation on the effluent from preceding processes, ensuring that key indicators such as petroleum content and COD stably meet strict discharge or reuse standards.

As a Standalone Integrated Treatment System: For specific oily wastewater streams (e.g., equipment rinse water, initial rainwater, small-flow process wastewater), it can operate independently to achieve full-process purification from influent to direct discharge compliance.

Intelligent Control, Stable Operation & On-Demand Startup

The system features high automation and an intelligent control system that adapts to fluctuations in water quality and volume. With rapid startup capability, it can meet the continuous or intermittent wastewater discharge demands of petrochemical production, enabling convenient on-demand operation. The elimination of chemical dosing systems greatly simplifies operation and management, reducing the safety risks and long-term costs associated with chemical storage, dosing, and subsequent sludge disposal.

Our electrochemical wastewater treatment equipment provides an innovative solution for the petrochemical and related energy industries, delivering efficient, clean, energy-saving, and rapidly deployable treatment for oily wastewater. It serves as a reliable technological choice to help enterprises achieve stable compliance amid stringent environmental regulations, improve water resource recycling rates, and practice green production.

Petrochemical wastewater treatment process

Petrochemical wastewater

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Pretreatment System (Optional)

(Improves the efficiency of the electrochemical oxidation system)

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CQDHX SERIES EO Electrochemical Oxidation Equipment
(Deep demulsification, degradation of dissolved oils and toxic organic matter, removal of sulfides, degradation of COD)

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Emission

Treatment Capacity of Electrochemical Oxidation Wastewater Treatment Equipment