Rongxuan environmental protection in the field of waste liquid concentration treatment through a variety of innovative technologies and scenario-based solutions to achieve efficient resource utilization, the specific technology path and practice are as follows:
I. Core technology
Low temperature evaporation technology
Low-temperature normal pressure evaporation process (below 55℃) is adopted to realize acid concentration and recovery for chemical, electroplating and other difficult wastewater, avoiding decomposition or volatilization at high temperature, and the acid recovery rate can be up to 10.5%.
The main body of the equipment is made of PP material, and the key components are made of corrosion-resistant materials such as silicon carbide and Hastelloy, which are suitable for strong acid (sulfuric acid, hydrochloric acid, phosphoric acid, etc.) environment.
Waste Acid Recycling Process
For the phosphoric acid/sulfuric acid waste liquid in the anodizing slurry, it is concentrated and reused through low-temperature evaporation to reduce the cost of hazardous waste disposal. Combined with heat pump waste heat recovery technology to reduce energy consumption, distilled water can be recycled.
Biological treatment coupling system
Integrating biochemical process and membrane technology (e.g., MBR+RO), the system converts wastewater into “new water” that meets the reuse standard, and improves the reuse rate of water resources.
Key Application Scenarios
Electroplating industry
Separate quality treatment for wastewater containing heavy metals (copper, nickel), recovering more than 500 tons of metals annually, with the reclaimed water used directly in the production line cooling system.
Chemical industry
Customized “pretreatment + membrane separation + evaporation crystallization” full-process solution to achieve 100% reuse of wastewater, salt crystallization products can be used as industrial raw materials secondary sales
Metal processing/acid washing
Processing stainless steel pickling mixed acid, aluminum sulfuric acid waste liquid, etc., the concentrate can be reused in the production tank, reducing the cost of new acid procurement.
Equipment and cost advantages
Support fully automatic operation, one key start and stop and real-time monitoring parameters, reduce the intensity of manual operation.
Low-temperature evaporation equipment with low investment and low energy consumption, especially suitable for small and medium-sized enterprises to realize zero discharge of waste liquid.
Concentrate treatment program
For the concentrated liquid generated from high salt and high COD wastewater, the curing system is used for harmless treatment to avoid secondary pollution and lower energy consumption.
Through the integration of the above technologies, Rongxuan Environmental Protection has formed a whole chain waste liquid treatment system covering pretreatment, concentration and separation, and resource recovery, taking into account the environmental compliance and economic benefits.
