The invention relates to a process for treating high-concentration
pyridine waste water, which comprises the following steps of: regulating
raw water of waste water to be acidic, and treating the
raw water in electro-
catalytic oxidation equipment; leading
effluent to a micro-
electrolysis device for treatment under the condition of maintaining the acidity and
oxygen enrichment of the waste water; regulating the
effluent to be meta-alkalescent, and adding chemicals to perform coagulating
sedimentation; and controlling the
salinity of the waste water to be below 2 percent, and performing biochemical treatment in an anaerobic hydrolyzing device and a pressurizing biological contact oxidation device, so that the
effluent reaches the conventional first-level standards for
sewage discharge. Due to the adoption of a physico-
chemical treatment process serving electro-
catalytic oxidation as a core,
pyridine pollutants can be decomposed effectively, the
toxicity of the waste water can be reduced, and the biodegradability of the waste water can be improved; for biochemical treatment is realized by a combination process of anaerobic
hydrolysis and pressurizing biological contact oxidation, the organic loads, treatment efficiency and salt-tolerant capacity of the biochemical treatment are improved; and the process has the characteristics of high
impact load resistant capacity, good
treatment effect and low
operating cost, and the treated high-concentration
pyridine waste water can reach the standard stably before
discharge.