Rubber accelerant NOBS production wastewater treatment method

Abstract

The invention belongs to the technical field of environmental-protection water treatment, and particularly relates to a rubber accelerant NOBS production wastewater treatment method. The rubber accelerant NOBS production wastewater treatment method comprises the following steps: (1) adding an acid in wastewater, neutralizing to the pH of 6.5-7.5, and then carrying out multi-effect evaporation desalination treatment; (2) adding a defoaming agent into the wastewater in the step (1), and then carrying out aeration defoaming treatment for 3-6 h; (3) adding a microbial water purifying agent into the wastewater in the step (2); (4) adding an enzyme preparation into the wastewater in the step (3); and (5) oxidizing and adsorbing the wastewater in the step (4). The wastewater treatment method is good in water purification effect, fast in water purification speed, high in safety and wide in use range, has no secondary pollution, and treats the wastewater with a material having the adsorption capacity as raw material and with supplement of microorganisms; and the treated water has extremely high transparency and can be recycled.

Description

technical field [0001] The invention belongs to the technical field of environmental protection water treatment, and in particular relates to a method for treating waste water produced by rubber accelerator NOBS. Background technique [0002] With the development of the rubber industry, the rubber additives industry has also been rapidly developed and expanded, and is marching towards the direction of scale and intensification, and has a pivotal position in the global industry. The rubber industry is one of the major drainage households in the petrochemical industry. Its drainage water quality is complex and changes greatly. For example, the rubber accelerator NOBS wastewater contains more refractory organic matter. It is difficult to achieve the ideal by direct physical clarification or chemical reagent treatment. governance effect. The wastewater produced in the synthetic rubber production process has a large amount of discharge and strong toxicity. If it is discharged di...

AI Technical Summary

Problems solved by technology

The biggest disadvantage of this method of physical chemistry + biochemical combination is that it only simply transfers or dilutes the pollutants, which consumes a lot of water treatment chemicals, which not only costs high, but also causes secondary pollution, and a large amount of inorganic salts are discharged into the environment. It will cause the harm of soil salinization. Some auxiliary wastewater such as vulcanization accelerator NS wastewater will change color and increase in chroma after biochemical treatment, which cannot meet the relevant discharge requirements.

The resin adsorption method will fail due to pore blockage; membrane separation technology has high requirements for suspended solids and acidity and alkalinity, and it is not suitable to pretreat the wastewater; the salt content of the wastewater treated by the extraction method has not changed; if the wastewater is only used Simple distillation and evaporation treatment can separate inorganic salts and water, but the effluent will still contain some organic pollutants, and the water quality still cannot meet the discharge requirements