Biological treatment synergistic method for degradation-resistant organic wastewater

Abstract

The invention discloses a degradation-resistant organic wastewater biological treatment synergistic method, which comprises the following steps: S1, carrying out enhanced wastewater pretreatment; S2,adding special biological bacteria; and S3, adding a biological spherical filler. After improvement, a Fenton treatment process is added, and special synergistic bacteria and the biological filler areadded, so that most of toxic substances such as long-chain organic matters and phenol can be effectively broken and decomposed, the biodegradability of wastewater is improved, the reproduction of bacteria is greatly promoted; the effluent of the biochemical treatment system is obviously improved, the operation stability is maintained, and the effluent index is lower than the discharge standard.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a method for synergizing biological treatment of refractory organic wastewater. Background technique [0002] As more and more people pay attention to environmental protection issues and the country's improvement of environmental protection discharge standards, stricter requirements have been imposed on the sewage discharge produced by many existing chemical plants. The wastewater produced by traditional chemical plants has complex components, and the water contains Alkylphenols, polyaldehydes, methanol, toluene and other organic substances; this kind of organic wastewater not only has a high concentration of organic substances, but also is difficult to degrade and is toxic, which is easy to be unfavorable to subsequent biological treatment; although the original treatment process can treat this type of water to meet the discharge standards , but after biochemical tr...

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Problems solved by technology

[0002] As more and more people pay attention to environmental protection issues and the country's improvement of environmental protection discharge standards, stricter requirements have been imposed on the sewage discharge produced by many existing chemical plants. The wastewater produced by traditional chemical plants has complex components, and the water contains Alkylphenols, polyaldehydes, methanol, toluene and other organic substances; this kind of organic wastewater not only has a high concentration of organic substances, but also is difficult to degrade and is toxic, which is easy to be unfavorable to subsequent biological treatment; although the original treatment process can treat this type of water to meet the discharge standards , but after biochemical treatment, the effluent stability is poor, and the effluent often exceeds the standard; the original discharge water has to be returned to the water treatment system for retreatment, resulting in a decrease in the water treatment efficiency of the factory, which in turn has an important impact on production. The process of water treatment system stability is particularly important

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