An effective method for surfactant wastewater treatment?

1. Conventional treatment methods 　　 mainly include foam separation method, adsorption method, coagulation method, and catalytic oxidation method. The processing cost is high, the removal rate is not good, and the system operation is unstable. Biological treatment has low cost, the most researched, and the most widely used. However, most surfactants have a strong inhibitory effect on the degradation activity of bacteria, so it is not easy to domesticate and cultivate a stable biochemical system.　　 2. Hatch treatment technology of surfactant wastewater 　　 composite catalytic micro-electrolysis + simplified biochemical combination process] is the core technology of Hatch environmental protection treatment of surfactant wastewater. After 　　 Hatch micro-electrolysis treatment, the reduction rate of COD in surfactant wastewater reaches 50%-90%, and the biological toxicity of wastewater is greatly reduced. The effluent of the micro-electrolysis is hydrolyzed and acidified + aerobic treatment to achieve discharge standards. At the same time, you can view more technical documents of China Wastewater Treatment Engineering Network.　　3. Application engineering 　　 Fine chemical plant wastewater treatment project, water volume is 50 m3/d, influent COD value is 3500mg/L, biodegradability is poor, COD value changes greatly, COD load impact is great, and it cannot be directly treated by biochemical method. 4. Treatment process surfactant wastewater-→ Regulating tank-→ Hatch Micro-electrolysis subsystem-→ Hydrolysis biochemical + aerobic system-→ Sedimentation-→ Sand filter-→ Discharge 5. Inlet and outlet water indicators and The total residence time of the process parameters HRT u003d 40 hours operating cost (direct cost) ≤ 2.5 yuan / ton.　　Surfactant has good washing, wetting, emulsifying and solubilizing properties. There are many sources of surfactant wastewater. For example, household kitchen wastewater, hotel wastewater, and laundry wastewater contain anionic surfactants (LAS). Washing, chemical, textile and other industries also produce a large amount of surfactant-containing wastewater. In addition to surfactants and colloidal pollutants carried by their emulsification, wastewater also contains additives, bleaching agents and oily substances. Wastewater is generally alkaline, and some of the surfactant content is as high as 1000 mg/L, such as wool scouring wastewater, and some are only a dozen mg/L, such as bathing wastewater; the COD value is also very different, ranging from hundreds to tens of thousands Even higher. Surfactant wastewater is widespread, and its treatment is of great significance for protecting resources, maintaining ecological balance, and promoting economic development.