Slow-release carbon source, preparation method and wastewater treatment method

Abstract

The invention discloses a slow-release carbon source, a preparation method and a wastewater treatment method. The slow-release carbon source comprises agricultural waste powder, glutinous rice, waterand a release promoter, wherein the components are respectively 50-70 parts by weight, 4-15 parts by weight, 25-35 parts by weight and 4-7 parts by weight; the method for preparing the slow-release carbon source comprises the following steps: taking agricultural wastes, and crushing the agricultural wastes into powder; dissolving glutinous rice, a release promoter and the agricultural waste powderin water to prepare a mixed solution, feeding the mixed solution into a forming mold for forming, and preliminarily drying; drying for 70-80 DEG C, and the drying time is 50-70 min; baking the carbonsource at the baking temperature of 105 to 110 DEG C for 1.5 to 2.5 hours; preheating the carbon source under the condition of 300-500 DEG C, and heating the carbon source under the condition of 1100-1200 DEG C; and cooling to 1000 DEG C and then taking out the carbon source; the wastewater treatment method is a method for treating wastewater by adopting a slow-release carbon source, and has theadvantages of low cost, high carbon source release speed, high carbon source release efficiency, biodegradability, convenience in use and remarkable total nitrogen removal effect.

Description

technical field [0001] The invention relates to the technical field of enhanced purification of water quality, in particular to a slow-release carbon source, a preparation method and a wastewater treatment method. Background technique [0002] With the rapid development of social economy, the excessive discharge of nutrients in domestic sewage, industrial wastewater and agricultural non-point source pollution has caused the phenomenon of surface water eutrophication to become increasingly serious. The research on efficient and stable sewage treatment technology is of great importance to improve the quality of surface water environment is of great significance. [0003] With the advancement of environmental governance, the content of the total amount of wastewater pollution control by the corresponding environmental protection departments is constantly increasing and refining. It is manifested by paying more attention to the improvement of environmental quality, gradually sh...

AI Technical Summary

Problems solved by technology

At present, the common problem of high total nitrogen wastewater is C / N imbalance. There is and only way to add an external carbon source is the best solution. The lack of carbon source in wastewater, the type of carbon source, release rate, release condition, and Different factors such as utilization efficiency will affect the reaction efficiency of microorganisms in the denitrification process of the wastewater treatment system

The carbon sources available on the market are all chemically synthesized or inorganic carbon sources. Traditional carbon sources are mainly liquid organic matter, such as glucose, methanol, acetic acid, sodium acetate, etc., which are expensive to use, uncertain in dosage, difficult to transport, and single in nutrition. And it is not conducive to safety supervision; while synthetic solid-state carbon sources are based on copolymer derivatives of natural materials, the copolymers have poor bioaffinity, poor film-hanging effect, and even some copolymers cannot be fully biodegraded, causing secondary pollution, and Using copolymer synthesis, the overall manufacturing cost of carbon source is difficult to be greatly reduced, and the cost of use is high, especially for the purification and treatment of industrial wastewater. In order to pursue the discharge of total nitrogen up to the standard, the use of carbon source will account for 10% of the cost of the entire wastewater treatment system. / 2—2 / 3, so it is necessary to develop an organic carbon source that is ecological, highly efficient, and convenient to use to meet the market's demand for carbon source supply

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