Anaerobic Granular Sludge Rapid Cultivation Method Suitable for Oil Refining and Chemical Wastewater Treatment

Abstract

The invention relates to an anaerobic particle sludge rapid culture method suitable for oil refining and chemical engineering wastewater treatment. The method comprises the following steps: 1, domesticating: taking facultative sludge of a sewage treatment field biochemical technology as inoculation sludge, adopting a sodium acetate solution as an organic matrix in the initial culture stage, adding oil refining and chemical engineering wastewater to the organic matrix with the implementation of culture, and increasing the blending proportion of the oil refining and chemical engineering wastewater until the oil refining and chemical engineering wastewater is used as the complete organic matrix for culture; and 2, granulating: adding an polymer and turfy soil to domesticated anaerobic sludge in batches to promote granulation of the anaerobic sludge. The cultured anaerobic particle sludge obtained through the method has high concentration of microbes, large concentration and particle size, high organic volume load and hydraulic load, strong water quality and environment condition impact resistance and high organic pollutant degradation efficiency, and is especially suitable for anaerobic biochemical treatment of high concentration wastewater in the fields of petroleum and chemical engineering.

Description

technical field [0001] The invention relates to a rapid cultivation method of anaerobic granular sludge, in particular to a rapid cultivation method of anaerobic granular sludge suitable for anaerobic biochemical treatment of refractory oil refining and chemical wastewater, belonging to the technical field of petroleum and chemical wastewater treatment. Background technique [0002] The key to upgrading oil refining and chemical wastewater to meet standards is biochemical treatment, and the key to biochemical treatment process is anaerobic biochemical treatment. Anaerobic can not only recover energy through microbial reduction of COD, but also improve the biodegradability of refractory organic pollutants (such as polycyclic aromatic hydrocarbons and heterocyclic compounds) by changing the chemical structure to ensure the subsequent aerobic biochemical processing effect. [0003] The high-efficiency anaerobic reactor has higher microbial concentration, larger sludge concentr...

AI Technical Summary

Problems solved by technology

This is because: when UASB is applied to petroleum and chemical organic wastewater, the complex organic pollution composition and frequent impacts on water quality and quantity make it very difficult to form an efficient anaerobic sludge system, especially anaerobic granular sludge

Moreover, there are still defects such as anaerobic sludge loss, difficulty in increasing anaerobic sludge concentration, decline in microbial-pollutant mass transfer efficiency, and low organic volume loading rate, which restricts the improvement of biochemical system treatment efficiency.

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