Study On Resource Utilization Of High Concentraion Organic Phosphorus Wastewater

Thesis, the most typical of high concentration phosphorus wastewater from glyphosate-mother liquor for the study, first use a variety of methods to determine the mother liquor of main components and the basic physical and chemical properties, then developed a "wastewater-directional conversion of organic phosphorus phosphorus recovery-refined and deep processing of phosphate" process and resource utilization of mother liquor of glyphosate.(1) the liquor pretreatment method of glyphosate. Mainly chemical oxidation and membrane separation technology study the pretreatment effect. Method of comparing different oxidation of glyphosate from the organic phosphorus removal effect and thickening, chemical Catalytic oxidation for organic phosphate and COD removal rate appropriate, mild conditions, the advantages of higher concentration ratio, suitable for large-tonnage organic phosphorus wastewater applications.(2) high concentrations of organic phosphorus concentration directed into experimental study on phosphorus recovery. Concentrate in the COD, TP content characteristics, low sodium chloride content, try directional conversion method research on high-temperature thermal decomposition, polymerization, will concentrate on high temperature dehydration, oxidation and decomposition, polymerization, poly-phosphate raw. The element is regulated through the concentrated liquid, can get sodium pyrophosphate, Tripolyphosphate, sodium hexametaphosphate and TRIS and other crude products. Control of reaction temperature, reaction time, product content can be reached 90%.(3) phosphate/phosphate product refining and downstream process development. According to the solubility of sodium pyrophosphate, sodium phosphate chemical properties, developed the "solution-precision filter-cooling crystallization" purification process, sodium pyrophosphate, sodium phosphate product into industrial grade sodium pyrophosphate, sodium phosphate products. Also tried the step by steppolymerization of sodium tripolyphosphate, one-step synthesis of linsuanna and other products. To improve the value of recycled products, paper with pyrophosphate as raw materials, synthesis of phosphate potassium dihydrogen pyrophosphate, copper pyrophosphate, melamine and other derivatives.(4) on phosphorus recovery technologies of industrialization running situation analysis, has built the 80,000 tons of glyphosate/year glyphosate treatment of mother liquor production plant, the principal device with an average running time of more than 3 years, so far, in good operating condition, confirmed the technology mature and reliable.(5) the resource utilization of mother liquor of glyphosate technical analysis of the economic and social benefits. In terms of per ton of glyphosate, creating economic benefits for 181, corresponds to 80,000 tons/year of 14.48 million yuan of the cost effectiveness of glyphosate; annual savings of 85,200 tons of phosphorus ore resource (phosphorus ore grade 16.9%). Promotion on the domestic production capacity of 450,000 tons of glyphosate a year, its economic and social benefits will be more obvious.High concentration organic phosphorus wastewater resources of using technology of development and the industrialization application, for domestic organic phosphorus industry of wastewater processing created has new way, the technology of development not only can from essentially solution has high concentration organic phosphorus wastewater of way problem, elimination has wastewater row into water of huge environment security hidden, and on save valuable of p mine resources, and development new of industrial phosphate of production process are has important value. In addition, the technology also has good economic and social benefits and application prospects.