Application and preparation method of novel high-universality efficient composite carbon source

Abstract

The invention provides application and a preparation method of a novel high-universality efficient composite carbon source. The novel high-universality efficient composite carbon source comprises a dominant carbon source for denitrifying bacterium growth, a growth promoting agent and anaerobic bacteria, and the growth and denitrification performance of denitrifying bacteria can be promoted. The carbon source accounts for 65%-75% of the total amount of the composite carbon source and comprises 45%-60% of small-molecular acid, 10%-20% of small-molecular alcohol, 5%-10% of saccharides, 5%-10% of sodium acetate and 0-30% of water, summing to 100%. The growth promoting agent accounts for 0.5%-5% of the total amount of the composite carbon source and comprises inorganic salt, compound enzyme, compound amino acid, compound vitamin and tap water, wherein the inorganic salt accounts for 0.1%-2%, the compound enzyme accounts for 0.5%-5%, the compound amino acid accounts for 0.5%-5%, the compound vitamin accounts for 0.5%-5%, and the tap water accounts for 83%-98.4%, totaling to 100%. The anaerobic bacteria account for 0.5%-5%. The COD of the composite carbon source provided by the invention is 500,000-600,000 mg / L. A high-universality efficient composite carbon source nutritional agent has the characteristics of high efficiency, environmental protection performance, stability and convenience in use, and can well adapt to and meet market requirements.

Description

technical field [0001] The invention relates to the field of sewage biochemical treatment, in particular to the application and preparation method of a novel highly universal and efficient composite carbon source. Background technique [0002] With the country's increasing emphasis on environmental protection and the increasing discharge standards of sewage treatment plants, the requirements for sewage treatment in all aspects are constantly increasing. At present, the first-level A discharge standards for pollutants in urban sewage treatment plants are chemical oxygen demand (COD: 50mg / L), total nitrogen (TN: 15mg / L, of which ammonia nitrogen 5mg / L), total phosphorus (TP: 0.5mg / L L). In some areas with high requirements for environmental protection, the content of TN should be below 10 mg / L. Therefore, it is very necessary to develop technologies and agents for efficient sewage treatment. As the receiving unit of urban drainage, the sewage treatment plant is also the mos...

AI Technical Summary

Problems solved by technology

Sodium acetate trihydrate has fast response speed and low risk, but the proportion of carbon and hydrogen is low, the transportation cost is high, it is easy to crystallize and precipitate, and the solubility is low at low temperature, so it is not suitable for use in northern water plants in winter

Glucose is generally an ideal carbon source, which is easy for microorganisms to absorb, but the control of the dosing position and dosage is relatively strict. If the control is not proper, it will easily cause the proliferation of filamentous bacteria, cause sludge swelling, and deteriorate the quality of the effluent from the sedimentation tank; organic Salt carbon sources are generally low-molecular straight-chain organic acid salts, which are beneficial to microbial absorption, but organic acid salt carbon supplements are likely to cause changes in pH and salinity, and the dosage will be affected by the Larger restrictions; Alcohol carbon supplements are generally ethanol or methanol, as hazardous chemicals, it is easy to cause safety problems, and its production, transportation, storage, use and other processes must strictly follow the management methods of hazardous chemicals. has great limitations in

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