Biochemical Azadirachtin Extracted After The High Concentration Organic Wastewater Treatment Technology

It is researched the wastewater treatment technology that manage in the extraction of azadirachtin in the process of the wastewater in a company, with the aim of finding an effective handling of the high concentration of species, degradation of organic waste water is difficult. Neem in the production of raw materials for pesticides is the most respected low toxicity,low-residue, non-toxic to humans and animals to safety,strong selective, non-drug-resistant, pollution-free environment, natural pesticides, Its active ingredient is azadirachtin, but Azadirachtin in the process of extraction have had a high concentration of refractory, poor biodegradability of organic waste, COD concentration of its more than 300,000, The inspection of the literature has not yet found a similar high concentration of organic waste.Due to the special nature of water, has not yet found an organic wastewater treatment technology to deal with such a high concentration of organic waste,so the paper used refractory organic wastewater of chemical, physical and biological treatment of the study, summed out a framework for dealing with this type of waste water treatment process, That is, including the digestion process, oxidation, coagulation, anaerobic process. The results showed that:Digestion, oxidation, pre-coagulation not only to remove some of the organic matter in waste water, but also through the destruction of organic matter to improve structure of the biodegradability of waste water, reducing the follow-up to deal with the pressure, making anaerobic treatment has good results. The overall structure of the paper is that, First, a brief introduction to the mechanism of azadirachtin for pesticides and characteristics of refractory organic wastewater as well as some of the commonly used methods, And then through a small pilot test of the treatment carried out exploration studies to determine the initial pilot line, and in accordance with the trial process, the conditions of a pilot program conducted a study to find out the conditions for effective.Test the impact of these factors, the main research in the following areas:The process of digestion research the pH and the temperature factor. Test results, When the temperature is 80℃, pH value of 4:00, the water removal rate of COD better.The oxidation process research the pH of the hydrogen peroxide dosage factor. The results showed that when hydrogen peroxide dosage for 25ml, pH value of 4, the water removal rate of COD better.The coagulation process research the pH of the PAC dosage factor. Test results, as a PAC dosage to 1.0g, pH value of 8, the removal of COD in water better.Anaerobic biological treatment process studied water samples and anaerobic sludge volume ratio and the temperature factor. The results come when the temperature is 35℃, water and anaerobic sludge volume ratio of 1:3, water removal rate of COD better.After research, When the pH of the digestion process for 4,at a temperature of 80℃, the process of oxidation pH of 4, hydrogen peroxide dosage for 25ml, the process of coagulation pH of 8, the PAC dosage was 1.0g, tired of Biological oxygen to deal with a temperature of 35℃, water and anaerobic sludge volume ratio of 1:3, To deal with the ultimate test of the water concentration of COD dropped to about 9000 mg per liter,the removal rate reached 97.15 percent and color have been greatly Improvement.