A carbon and nitrogen removal device and method for wastewater with high ammonia nitrogen and high organic matter

Abstract

The invention discloses a carbon and nitrogen removal device for waste water with high ammonia nitrogen and high organic matter, which comprises an anaerobic fermentation tank, a high DO decomposition tank, a medium DO nitrification tank, a denitrification filter tank, a sedimentation tank and a disinfection tank connected in sequence; The top of the oxygen fermentation tank communicates with the bottom of the denitrification filter; the bottoms of the anaerobic fermentation tank, high DO decomposition tank, medium DO nitrification tank and sedimentation tank are all equipped with mud discharge ports, and each mud discharge port is connected to the denitrification tank through the mud discharge pipe respectively. The mud storage tank is connected; the mud discharge port of the mud storage tank is connected with the sludge hydrolysis tank, and the sludge hydrolysis tank is connected with the denitrification filter tank. The beneficial effects of the present invention are: the use of anaerobic fermentation to treat the original wastewater not only improves the biodegradability of the wastewater, but also reduces the biological load of subsequent treatment; the process of removing COD and the nitrification process can be separated to avoid the excessive organic load on the nitrification reaction Inhibition; the methane produced by anaerobic fermentation and the hydrolyzate of excess sludge are used as denitrification carbon sources, which not only saves operating costs, but also contributes to energy conservation and emission reduction.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a carbon and nitrogen removal device and method for waste water with high ammonia nitrogen and high organic matter. Background technique [0002] With the rapid development of my country's economy and the continuous improvement of people's living standards, people's demand for meat and medicine continues to rise, accompanied by the continuous discharge of livestock and poultry wastewater, slaughter wastewater and various pharmaceutical wastewater. [0003] Livestock and poultry breeding wastewater includes livestock and poultry urine, manure, etc. produced during the breeding process, as well as flushing water generated by flushing pens, water for cleaning facilities, domestic water for workers, and rainwater flowing through the farm. The composition of livestock and poultry breeding wastewater is complex and belongs to high-concentration breeding wastewater. The main fe...

AI Technical Summary

Problems solved by technology

Aiming at the current problem that wastewater with high ammonia nitrogen and high organic matter is difficult to meet the discharge standards, exploring low-cost and high-efficiency carbon and nitrogen simultaneous removal methods has become one of the main development directions for this type of water treatment.

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