Composite carbon source for sewage denitrification as well as preparation and using methods of composite carbon source

Abstract

The invention discloses a composite carbon source for sewage denitrification as well as preparation and using methods of the composite carbon source. The composite carbon source comprises the following raw materials in parts by weight: 15 parts of sodium acetate solution with the concentration being 35%, 8 parts of glucose solution with the concentration being 45%, 6 parts of xylitol solution withthe concentration being 65%, 28 parts of glycerol, 25 parts of methanol with the purity being 99%, 4 parts of ethanol, 15 parts of glycol, 6 parts of glacial acetic acid, 5 parts of active peptide and 14 parts of composite amino acid solution with the concentration being 48%. The composite carbon source disclosed by the invention is a carbon source product more easily absorbed and utilized by microorganisms, all the raw materials of the composite carbon source are common substances, however, the compounded carbon source avoids the phenomenon that a single carbon source results in microbial acclimation to affect decarburization, therefore, the phenomenon that nutrient absorption of other microorganisms is inhibited due to mass propagation of a certain single microorganism cannot appear, and adverse effects on other bacteria can be avoided while denitrification is promoted; and the conversion rate of the composite carbon source from COD to BOD5 can reach up to about 85%.

Description

technical field [0001] The invention relates to the technical field of supplementary carbon source for sewage denitrification treatment, in particular to a composite carbon source for sewage denitrification and its preparation method and use method. Background technique [0002] Microbial nitrogen and phosphorus removal is an important part of water treatment. Almost all the work of nitrogen and phosphorus removal is done by microorganisms in water, which is what we often call activated sludge. [0003] After the promulgation of the Water Ten Regulations and the new environmental protection law, since the implementation of the first-level A discharge standard by the water plant, it has become more and more difficult to fully meet the discharge standards of total nitrogen and total phosphorus, and the most direct environmental pollution caused by nitrogen and phosphorus is water eutrophication Algae blooms and the ecology is severely damaged. For example, since the BOD5 of m...

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Problems solved by technology

[0009] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a composite carbon source for denitrification of sewage and its preparation method and use method, to avoid the problem of singleness of microorganisms, and to play a role in the carbon sources required by various microorganisms. Supplementary effect, and supplement the amino acids necessary for microorganisms, so that microorganisms can maintain good absorption, development, reproduction and activity, improve the effect of nitrogen removal in sewage without affecting phosphorus removal, and the conversion rate of COD to BOD is increased to 85% about

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