High Salinity Organic Chemical Industry Waste Water Biomembrane Processing Craft Experimental Study

The epoxypropane (PO) is the important organic industrial chemicals, may use in producing the polyurethane, the coating, the solvent and so on, the application domain involves the plastic processing and the fine chemical industry, Has the very good application prospect, The output increases year by year.At present the industrialization production epoxypropane method mainly is altogether the oxo-process and the chlorhydrin law, Our country produces the epoxypropane the method is the most classical chlorhydrin law, This method merit obvious, the flow short, the craft mature, the operation elasticity big, the selectivity good, the production rate is high, in addition, is lax to the raw material propylene purity request, the construction invests few, production relative security;But the shortcoming is the equipment is easy to corrode, produces contains NaCl or the CaCl₂ waste water and consumption quite many chlorine, the pollution quite is serious. It produces in particular the waste water, the high temperature (60 80℃), the high pH value (10 12), the high salt (CaCl₂ quality scores is 3.5% 4.0%), High SS (the SS density is 0.3% 0.5%), COD in 1000 2000mg/ L.This research was aimed at microbiological treatment of phenyl acetic acid manufacturing wastewater. This waster water was characterized by hypersalinity, high concentration of refractory organic pollutants.The acclimation course of salt-tolerant sludge was divided into two phases:First, hangs the membrane, uses is the fast platoon putty law.Second, after hangs the membrane to end, according to experiments the plan according to add the Cl^- quantity (mg/L), tarts the biomembrane to bear the salt to domesticate.The result indicated that:First, uses the fast platoon putty law is suitable in this kind of experiment hangs the membrane, only uses 29 day to hang the membrane to be successful.Second, take the salty share achievement choice pressure, enters water COD in the reactor as 200mg/L, Water leakage COD achieves 40mg/L, the volume loadachieves 1.55kgCOD/m3.d condition, Can domesticate the strong biomembrane.The sludge domesticates which with salt is insensitive to the salinity change, has the strong activeness in the different salinity environment.