236 results about "Perturbateurs endocriniens" patented technology

The invention discloses a scale advanced treatment method for livestock and poultry farming waste water. The method of the invention comprises the following steps: (1) adding acid to the livestock and poultry farming waste water after biological treatment, and regulating the pH value of the waste water to be less than or equal to 5.0; (2) adding H2O2 and soluble ferrite to the waste water to carry out oxidation reaction, wherein the mol ratio of the H2O2 to the Fe<2+> in the soluble ferrite is between 1:1 to 2:1; and (3) after carrying out reaction for not less than 10 minutes, adding alkali to reaction liquid, regulating the pH of the reaction liquid to be greater than or equal to 6.0, carrying out flocculating and depositing, and then discharging deposit and waste water according with the discharge standard. By controlling the pH value of the reaction system, the adding proportion of the H2O2 to the FeSO4, and the running time, the invention achieves the treatment effect and optimization of energy consumption. The process effectively oxidizes and decomposes the trace organic pollutants (incretion interferents, antibiotics and the like), simultaneously removes various heavy metals and phosphorus by coagulating sedimentation, inactivates pathogenic bacteria in the waste water, and realizes integrated high-efficiency reinforcement treatment of the livestock and poultry farming waste water.

The invention belongs to the technical field of wastewater treatment, and discloses a preparation method of carbon and oxygen co-doped graphite phase carbon nitride, and an application of the carbon and oxygen co-doped graphite phase carbon nitride in the catalytic activation of persulfate to degrade pollutants in water. The carbon and oxygen co-doped graphite phase carbon nitride is prepared by high-temperature calcining of succinic acid and urea, is used as a catalyst to activate the persulfate to effectively degrade dyes, endocrine interferents, pesticides and other organic pollutants, hasa very good removal effect at a pH value of 3.0-9.0, and has an excellent stability, and a result of detection shows that active substances in the reaction system are hydroxy free radicals (<.>OH) andsulfate radicals (SO<4><.->) and singlet oxygen (<1>O2). The carbon and oxygen co-doped graphite phase carbon nitride has the advantages of no secondary pollution, convenience in separation from water and recycling, and broad application prospect when used for activating the persulfate to degrade the organic pollutants in water as a nonmetal catalyst.