Novel composite carbon source

Abstract

The invention discloses a novel composite carbon source which comprises the following raw materials: 20 to 25 percent of C2-C4 hydrocarbon, 20 to 30 percent of a solid fatty alcohol mixture, 4 to 6 percent of sodium acetate, 4 to 6 percent of sodium propionate and the balance of methanol; and the C2-C4 hydrocarbon contains 1 to 10% of C2H2; 10 to 20% of C2H4; 10 to 20% of C2H6, 10 to 20% of C3H6,10 to 20% of C3H8, 10 to 20% of C4H8, 10 to 20% of C4H10; the solid fatty alcohol mixture comprises 50-70% of octadecanol and 20-40% of hexadecanol, and the concentration of methanol is 90-95%. The novel composite carbon source has the advantages that COD and BOD equivalent values are increased, so that the load can be greatly increased, the metabolic activity of bacteria can be enhanced, the speed of synthesizing new cell substances is increased, and the sewage treatment load is further increased.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a novel composite carbon source. Background technique [0002] Due to the continuous acceleration of urbanization, the discharge of domestic sewage and eutrophication substances have increased, resulting in increasingly serious eutrophication of lakes and reservoirs. At present, relevant departments have required sewage treatment plants to first use biological nitrogen and phosphorus removal before discharging sewage into receiving water bodies to prevent environmental pollution. Nitrification and denitrification denitrification is an efficient biological denitrification technology, which is widely used in the field of sewage treatment. In terms of microbial nitrogen removal, when denitrification is performed, heterotrophic denitrifiers need to consume additional organic matter as a carbon source and provide energy. The current sewage treatment plants in my country, es...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a new type of composite carbon source, which can increase the equivalent value of COD and BOD, so that the load can be greatly increased, and the metabolic activity of bacteria can be enhanced, thereby increasing the speed of synthesizing new cell substances, and then increasing the sewage treatment load. Advantages, solve the problem At present, a series of studies have been carried out on the types and amounts of external carbon sources added at home and abroad, and it is found that different external carbon sources have different effects on the denitrification process of the system. The effect is also different