The other is halogenated products wastewater, the use of synergistic catalytic oxidation + inflow aeration biofilter, with absolute advantages, such as the production of Chongqing Pig Bafu Foods pickled pepper phoenix claws and pickled pepper duck palms, goose palms, etc., because of the wastewater containing oil, salt are high, pigmentation, BOD in more than 9,500mg / l, COD in more than 4,800mg / l, SS in 600mg / l, ammonia nitrogen in SS in more than 600mg / l, ammonia nitrogen in the SS in more than 600mg / l. Ammonia nitrogen in SS in 2880mg/l or more, due to a single biochemical method can not be resolved, the final choice of synergistic catalytic oxidation + inflow aeration biofilter, the treated sewage to meet the water standard.
There is also pickled wastewater, the use of co-catalytic oxidation method, but also, with absolute advantages, such as the Chongqing fish spring pickle group of pickled wastewater, the company's first anaerobic + aerobic biochemical treatment, due to the treatment does not meet the standards, and then three times after the renovation, has invested more than 3,000,000 yuan, the treatment effect is not satisfactory, and finally the use of synergistic catalytic oxidation method + inflow aeration Biofilter, after treatment of sewage to reach the first A standard.
Synergistic catalytic oxidation and inflow aeration biofilter in the Guizhou Great Wall Environmental Protection Science and Technology Co.