Low-consumption nitrification and denitrification coal chemical wastewater advanced treatment device

Abstract

The invention discloses a low-consumption nitrification and denitrification coal chemical wastewater advanced treatment device, comprising a catalytic oxidation pond, an oxidation stabilization pond and a rear biochemical BAF pond, wherein the catalytic oxidation pond is filled with ozone-catalytic particles in a static bed form, and a comprehensive dilution tank is provided with a charging hole and a stirrer; the ozone-catalytic particles are prepared from 88.7-91.3 parts of activated aluminium oxide particles, 1.2-1.5 parts of copper oxide, 4-7 parts of polyethylene glycol, 1.5-2 parts of polyvinyl alcohol, 0.8-1 part of titanium dioxide, 0.3-0.5 part of hydroxyl propyl cellulose and 0.2-0.4 part of manganese dioxide; the lower part and the upper part of an aerobic tank in the rear biochemical BAF pond are respectively provided with a lower sieve plate and an upper sieve plate, the lower sieve plate, the upper sieve plate and the side wall of the aerobic tank form an aerobic cavity, and a plurality of aerobic activated sludge particles and a plurality of second masson pines as a filler are arranged in the aerobic cavity. The low-consumption nitrification and denitrification coal chemical wastewater advanced treatment device oxidizes a macromolecular organic matter hard to degrade into a micromolecular organic matter easy to biochemically treat, and the biochemical property of effluent is further improved.

Description

technical field [0001] The invention relates to a low-consumption nitrification and denitrification coal chemical sewage advanced treatment device, which belongs to the technical field of wastewater treatment. Background technique [0002] Most coal gasification plants in China adopt the Lurgi gas production process. The waste water pollutants produced by this process have a high concentration and complex organic components, mainly including phenolic compounds, polycyclic aromatic compounds, and heterocyclic compounds containing nitrogen, oxygen, and sulfur. Compounds and fatty compounds are highly toxic and difficult to biodegrade. If the coal-to-gas wastewater is not properly treated and discharged beyond the standard, it will cause serious pollution to the ecological environment. Therefore, how to effectively treat the coal-to-gas wastewater and achieve wastewater discharge standards has become an international problem. [0003] At present, high concentrations of ammonia...

AI Technical Summary

Problems solved by technology

At present, most of the research on coal gasification wastewater treatment technology stays in the small-scale experimental stage. Most scholars are only conducting research on the application of a single technology, and there are few studies on the coupling process of physicochemical treatment and biochemical treatment.

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