Novel autotroph denitrification combined device and running parameter adjusting method

Abstract

The invention provides a novel autotroph denitrification combined device and a running parameter adjusting method. The device comprises an adjusting tank, an anaerobic digestion tank, a first sedimentation tank, a heterotrophic denitrification tank, a second sedimentation tank, an autotroph denitrification tank and a third sedimentation tank which are sequentially connected. The novel autotroph denitrification combined device has the beneficial effects that the adjusting tank adjusts raw water to make temperature, a pH value and nutrient substance concentrations meet the requirements of biological treatment; the anaerobic digestion tank removes 70-80% of organic matters in the raw water, and the anaerobic digestion tank and the heterotrophic denitrification tank remove 90%-95% of organic matters in the raw water; meanwhile, the heterotrophic denitrification tank can remove more than 90% of nitrate nitrogen generated by the autotroph denitrification tank; the autotroph denitrification tank can remove 95%-99% of ammonia nitrogen in the raw water. By means of the device, 95%-98% of total nitrogen in the raw water can be removed, and the nitrogen volume removal load rate reaches 2.5-10kg / (m3.d); after sewage treatment is conducted, the effluent quality can be up to national relative discharge standards.

Description

technical field [0001] The invention is applicable to the field of sewage biological treatment, and in particular relates to a novel autotrophic biological denitrification combined device and an operation parameter adjustment method. Background technique [0002] With the ever-growing industry and agriculture, the rapid concentration of urban population and the continuous improvement of residents' living standards, a large amount of sewage is produced. In order to treat sewage, a large number of sewage plants have been built to treat these sewage, but while treating these sewage A large amount of sludge will be produced. Sludge drying treatment evaporates the water in the sludge through thermal energy transfer, which can greatly reduce the volume of sludge, reduce the cost of disposal, transfer, storage, etc., and remove the pathogens contained in the sludge. However, sludge drying will produce a large amount of condensed wastewater. Due to the high temperature process, micr...

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Problems solved by technology

[0006] The technical problem mainly solved by the present invention is to provide a new type of autotrophic biological denitrification combined device and operation parameter adjustment method, to solve the influence of organic matter in the sludge drying condensate on the content and activity of autotrophic denitrification organisms, and the effect of autotrophic biological denitrification Low sludge concentration, high operating cost of autotrophic biological denitrification process, unstable operation of autotrophic biological denitrification device and high effluent total nitrogen index

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