Technology for treating waste water produced by rubber accelerator production

A rubber accelerator and treatment process technology, which is applied in natural water treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problems of long treatment process, high cost and complicated operation, and achieve The effect of compact process flow, reduced odor of wastewater, and easy industrialization

Active Publication Date: 2013-09-04
NANJING UNIV OF TECH
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  • Abstract
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  • Claims
  • Application Information

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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

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  • Technology for treating waste water produced by rubber accelerator production
  • Technology for treating waste water produced by rubber accelerator production
  • Technology for treating waste water produced by rubber accelerator production

Examples

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Comparison scheme
Effect test

Embodiment 1

[0022] The flow chart of the treatment process of rubber accelerator production waste water of the present invention is as figure 1 Shown:

[0023] The initial CODcr115246mg / L, TOC41057mg / L, ammonia nitrogen 6436mg / L, salinity 31.2% and chromaticity below 10 in the waste water produced by a certain rubber accelerator. First adjust the water quality, then adjust the pH value of the wastewater to 11.5, adjust the temperature of the constant temperature oscillator to 70°C, put the sealed glass vessel containing the waste water into the constant temperature oscillator for alkaline hydrolysis reaction, and continue for 2 hours; at this time, the pH of the alkali hydrolysis effluent value dropped to 8.0, fine-adjust the pH value to weakly acidic 6.0 with sulfuric acid, and then use a vacuum pump to perform decompression (vacuum degree of 0.05) evaporation and desalination treatment; dilute the above-mentioned treated wastewater by 2 times, fine-adjust the pH value to 7.0, and then e...

Embodiment 2

[0026] The initial CODcr115012mg / L, TOC41036mg / L, ammonia nitrogen 6430mg / L, salinity 32.5% and chromaticity below 10 in the waste water produced by a rubber accelerator. First, adjust the water quality, then adjust the pH value of the wastewater to 12.5, adjust the temperature of the constant temperature oscillator to 85°C, put the sealed glass vessel containing the wastewater into the constant temperature oscillator for alkaline hydrolysis reaction, and continue for 3 hours; at this time, the pH of the alkali hydrolysis effluent The pH value drops back to 7.2, fine-adjust the pH value to weakly acidic 5.0 with sulfuric acid, and then perform decompression (vacuum degree of 0.045) evaporation and desalination treatment; fine-adjust the pH value of the above-mentioned wastewater to 8.0, and then enter anaerobic and anaerobic sludge The concentration is maintained at 9500mg / L, the anaerobic HRT is maintained at 24h, and the sludge reflux ratio is 1.0; the effluent from anaerobic...

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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. ...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F103/38
Inventor 徐炎华刘志英程杰陆雪梅朱明新
Owner NANJING UNIV OF TECH
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