1、 Water purification effect: key indicators accurately meet standards

The COD removal rate remains stable at over 90%. After treating high concentration chemical wastewater (COD 5000-50000mg/L), the effluent COD can be reduced to 50-300mg/L, meeting industry requirements such as the "Pollutant Discharge Standards for Petrochemical Industry".

The removal rate of salt content is over 99%. After treatment, high salt wastewater (with a salt content of 5% -20%) with a salt content of less than 0.1% can be directly reused for processes such as circulating cooling and production cleaning.

The removal rate of recalcitrant organic compounds (such as phenols, aromatic hydrocarbons, and heterocyclic compounds) exceeds 85%, avoiding the problem of substandard effluent caused by residual organic compounds in traditional processes.

Suspended solids (SS), heavy metal ions, and other indicators are all controlled below the emission standards. The effluent is clear and odorless, and can be directly discharged or deeply reused.

2、 Resource recycling effect: turning waste into treasure and improving efficiency

The water resource recovery rate reaches 80% -90%, and the treated standard effluent can be recycled for production processes, reducing the amount of fresh water purchased. A coal chemical enterprise processes 100 tons of high salt wastewater per day and recovers 85 tons of reclaimed water per day, saving over 400000 yuan in water bills annually.

The recovery rate of salt crystallization exceeds 90%. After evaporation and crystallization, the purity of salts such as sodium chloride and sodium sulfate in wastewater can reach over 95%. They can be used as industrial raw materials for production or external sales.

The potential for organic resource recovery is great. Some chemical wastewater containing solvents (such as alcohol and ester wastewater) can be recovered by low-temperature evaporation to recover organic solvents, with a recovery rate of 70% -80%, reducing raw material consumption costs.

3、 Reduction and Cost Control Effect: Significant Cost Reduction and Efficiency Increase

The reduction rate of wastewater reaches 90% -95%, and the original wastewater volume is concentrated to 5% -10%, significantly reducing the amount of hazardous waste disposal. A certain fine chemical enterprise processes 50 tons of reactor wastewater per day, and only needs to dispose of 3 tons of concentrated solution after concentration, reducing the cost of hazardous waste disposal by 94%.

The operating energy consumption is 40% -60% lower than traditional high-temperature evaporators. Combined with industrial waste heat or heat pump recovery technology, the energy consumption per ton of water treatment can be reduced to 50-80 kWh, far lower than the traditional process's 150-200 kWh/ton of water.

No need to add a large amount of chemical agents, reducing the cost of agent procurement and sludge treatment, while avoiding secondary pollution caused by chemical treatment.

4、 Environmental compliance and operational stability effect: avoiding risks and ensuring production

The fully enclosed operation mode avoids the emission of VOCs generated by wastewater volatilization, reduces air pollution, and meets the environmental protection requirements of the chemical industry.

Low temperature conditions (40-70 ℃) prevent chemical wastewater from undergoing decomposition and polymerization reactions at high temperatures, reduce the risk of toxic and harmful gas production, and ensure the safety of the treatment process.

The equipment has strong stability in continuous operation, with an annual effective operating time of over 8000 hours, suitable for the wastewater discharge characteristics of continuous production in the chemical industry, and does not require frequent shutdown maintenance.