Technology for treating waste water produced by rubber accelerator production

Abstract

The invention relates to a technology for treating waste water produced by rubber accelerator production. The technology comprises the following steps of 1, adjusting quality and an amount of waste water produced by rubber accelerator production, adjusting pH value of the waste water to 11-13, adjusting a temperature of the waste water to 60-90 DEG C, and carrying out stirring for 2-4h for alkaline hydrolysis, 2, adjusting a pH value of the waste water to 5.0-6.0 by sulfuric acid, and carrying out evaporation desalination, 3, carrying out anaerobic treatment on the waste water subjected to evaporation desalination, 4, orderly carrying out anaerobic treatment, aerobic treatment and secondary precipitation of the anaerobic precipitation product water, wherein a mixed solution and sludge backflow process is carried out between the secondary precipitation and the anaerobic treatment, and 5, orderly carrying out Fenton catalytic oxidation, coagulating sedimentation and filtration deep treatment on the secondary precipitation product water. According to the characteristic of quality and amount of waste water produced by rubber accelerator production, the technology combines a physicochemical treatment method and a biochemical treatment method, realizes that COD and ammonia nitrogen indexes of waste water stably reach corresponding emission standards, has a compact process, is convenient for operation, has low energy consumption and strong practicality, and can be industrialized easily. The waste water treated deeply can be used as recycled water so that waste water recycle is realized.

Description

technical field [0001] The invention belongs to the field of waste water treatment, and in particular relates to a process for treating waste water produced by rubber accelerators. Background technique [0002] Rubber vulcanization accelerator production wastewater has the characteristics of complex components, many types of organic pollutants, high concentration, high toxicity and high salt content, and has become a high-concentration organic wastewater that is difficult to treat at home and abroad. Therefore, how to effectively treat this type of wastewater has become one of the problems faced by my country's water environment protection. [0003] The wastewater produced in the rubber accelerator production process contains a large amount of refractory heterocyclic organic matter, which belongs to high-concentration refractory organic wastewater. It has large molecular weight, strong toxicity, complex structural components, stable properties, and easy enrichment. effect. ...

AI Technical Summary

Problems solved by technology

Due to the high salinity and a large amount of toxic substances in wastewater, it is difficult to meet the discharge requirements by purely using biochemical treatment, so the combined treatment of physicochemical-biochemical groups and processes is the development direction of wastewater treatment

[0005] Patent CN201210362562.1 provides a rubber vulcanization accelerator MBTS wastewater treatment method, which is mainly composed of six parts: acid-base flocculation, micro-electrolysis, Fenton oxidation, coagulation precipitation, activated carbon adsorption, and resin adsorption. Its advantage is the degradation of organic matter in wastewater More sufficient and less toxic, but this patented technology has a long treatment process, complicated operation, high treatment cost, and is not suitable for treating high-concentration accelerator production wastewater

Patent CN102311156A provides a method for photocatalytically treating waste water from rubber accelerator production, specifically using titanium oxide catalyst to assist ultraviolet light to treat rubber accelerator production waste water. Better, but the catalyst preparation procedure is more complicated and the cost is higher. Long-term exposure to ultraviolet light is easy to damage equipment and endanger human health. In addition, it is difficult to treat the waste water produced by rubber accelerator with large flow rate and high concentration to meet the standard.

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