Demulsifier for Power Plant Wastewater

A key solution for efficient water-oil separation

During the power generation process, the wastewater generated by power plants often contains a large amount of emulsified oil, which forms a stable oil-water emulsion, posing a great challenge to wastewater treatment. In order to achieve efficient water-oil separation and emulsion demulsification, chemical demulsifiers have become an important means of treating power plant wastewater.

Main components of power plant wastewater demulsifier

Power plant wastewater demulsifiers are usually high-efficiency composite agents compounded with a variety of chemical substances. Its core components include cationic polymers, surfactants and inorganic flocculants. Cationic polymers carry a large amount of positive charge, which can neutralize the negative charge on the surface of emulsified oil droplets and weaken the electrostatic repulsion between oil droplets; surfactants have a unique amphiphilic structure, which can reduce the oil-water interfacial tension and destroy the stable structure of the emulsion; inorganic flocculants can aggregate the demulsified oil droplets and suspended matter to form larger flocs through adsorption bridging and netting, which is convenient for subsequent separation.

Characteristics of power plant wastewater demulsifier

Fast demulsification speed

Faced with the complex wastewater system of power plants, the demulsifier can quickly penetrate into the emulsion in a short time, destroy the stable structure of the emulsified oil, greatly shorten the demulsification time, and generally achieve obvious demulsification effect within a few minutes, significantly improving the wastewater treatment efficiency.

Wide range of application

It can adapt to power plant wastewater from different sources and properties, whether it is high-temperature and high-turbidity desulfurization wastewater from coal-fired power plants, or oil-containing wastewater with complex components from gas-fired power plants, it can play a good demulsification role.

Strong temperature resistance

The temperature of power plant wastewater is often high, and the demulsifier has excellent temperature resistance. It can still maintain a stable demulsification effect under high temperature environment and is not significantly affected by temperature fluctuations.

Advantages of power plant wastewater demulsifier

High-efficiency separation

It can achieve efficient separation of oil and water, greatly reduce the oil content of the treated wastewater, effectively reduce the load of subsequent treatment processes, and improve the treatment capacity and effluent quality of the overall wastewater treatment system.

Environmental protection and safety

The use of green and environmentally friendly raw materials will not produce secondary pollution during the demulsification process. Its chemical properties are stable and it is less corrosive to the equipment, which prolongs the service life of the wastewater treatment equipment and reduces the equipment maintenance cost.

Economic and practical

Compared with traditional demulsification methods, the use of chemical demulsifiers can simplify the process flow, reduce equipment investment and operating costs, and at the same time improve the reuse rate of water resources, achieving a win-win situation of economic and environmental benefits.

Application case in power plant wastewater

In the process of wastewater treatment, a large coal-fired power plant has long faced the problem of difficult removal of emulsified oil, resulting in frequent blockage of subsequent deep treatment units and failure of effluent water quality to meet the standards. After the plant introduced a new type of power plant wastewater demulsifier, it first conducted a small sample test on the wastewater. Under laboratory conditions, an appropriate amount of demulsifier was added to the wastewater containing emulsified oil. After stirring evenly, in just 3 minutes, the originally turbid and stable emulsion quickly stratified, and the upper floating oil was obviously aggregated. Subsequently, the plant applied the demulsifier to actual production and treated it according to the optimized dosage and operation process. Operation data show that after treatment, the oil content in the wastewater has dropped from the original 200mg/L to below 15mg/L, and the effluent quality has reached the national emission standards. At the same time, the operation stability of the subsequent treatment unit has been significantly improved, and the equipment cleaning cycle has been extended by 3 times, saving millions of yuan in equipment maintenance costs and treatment costs each year.

Power plant wastewater demulsifiers provide reliable solutions for water-oil separation and emulsion demulsification in power plant wastewater treatment with their unique composition, significant characteristics and outstanding advantages. They show great value in both environmental protection and economic aspects, and will play a more important role in the field of wastewater treatment in the power industry.