High-concentration degradation-resistant organic wastewater system and treatment process thereof

Abstract

The invention discloses a high-concentration degradation-resistant organic wastewater system and a treatment process thereof, and belongs to the technical field of industrial wastewater treatment. The system comprises a pretreatment unit, an anaerobic treatment unit, a resource recovery unit and an aerobic deoxidation and deep treatment unit. The pretreatment unit, the anaerobic treatment unit and the aerobic deoxidation and deep treatment unit are sequentially communicated, and the anaerobic treatment unit is communicated with the resource recovery unit. According to the invention, high-concentration degradation-resistant toxic organic wastewater can be effectively treated by combining advanced oxidation, advanced oxidation, coagulating sedimentation, hydrolytic acidification, efficient anaerobic treatment, high-load aerobic treatment, short-cut nitrification and denitrification and advanced treatment, industrial wastewater with complex water quality, various types of pollutants and high concentration is treated by a plurality of different units, and different units are coupled to treat wastewater with different characteristics, so that not only can operation management be facilitated to prevent the influence between the units, but also the process and treatment cost can be reduced.

Description

technical field [0001] The invention relates to a high-concentration refractory organic wastewater system and a treatment process thereof, belonging to the technical field of industrial wastewater treatment. Background technique [0002] With the rapid development of industrialization in our country, while factories bring great economic benefits, they also bring many environmental problems. Among them, the treatment of high-concentration, refractory and toxic organic industrial wastewater is currently recognized by domestic and foreign sewage treatment circles. problem. For this kind of wastewater, such as coking wastewater, pharmaceutical wastewater, petrochemical / oil wastewater, textile / printing and dyeing wastewater, chemical wastewater, paint wastewater and other industrial wastewater have been studied, but many technologies are not mature enough to be put into the market. This type of industrial wastewater generally has the characteristics of complex water quality, hig...

AI Technical Summary

Problems solved by technology

In the anaerobic process, microorganisms multiply slowly, so the reactor start-up process is slow, which takes 7 to 13 weeks, which increases the workload and operating costs.

The organic matter load at the head end of the aeration tank is relatively high, so the oxygen consumption rate is relatively high. In order to avoid the anaerobic state due to lack of oxygen, the concentration of organic matter in the influent should not be too high, which leads to the aeration tank having to be large in volume, Larger footprint, resulting in higher infrastructure costs

Biological treatment technology has low adaptability to changes in influent water quality and water quantity, and its operation results are easily affected by changes in water quality and water quantity, and the effect of nitrogen and phosphorus removal is not ideal.

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