Rapid evaluation method of carbon releasing performance of slowly-releasing carbon source material

Abstract

The invention discloses a rapid evaluation method of a carbon releasing performance of a slowly-releasing carbon source material and belongs to the technical field of a carbon source slowly-releasing material in water treatment. The rapid evaluation method comprises the following steps of: preparing the slowly-releasing carbon source material; measuring pure water and adding the pure water into a testing container; adding weighed slowly-releasing carbon source material into the testing container filled with the pure water; closing the testing container and shaking the testing container so that the slowly-releasing carbon source material is uniformly dispersed in the pure water; moving a water sample in the testing container after 1 hour and 24 hours; measuring a COD (Chemical Oxygen Demand) of the moved water sample by utilizing a rapid tight catalytic resolution method; establishing a relation curve of 1 / c and 1 / t according to the secondary dynamics process of the carbon releasing process of the slowly-releasing carbon source material and solving cm and K; and evaluating the carbon releasing performance of the carbon releasing performance of the slowly-releasing carbon source material through cm and K values. According to the rapid evaluation method, the COD in a solution is considered to be changed along time so that the carbon releasing performance of the slowly-releasing carbon source material is rapidly evaluated; and the accuracy is higher so that the preparation formula of the slowly-releasing carbon source material is optimized and an optimal formula is determined.

Description

technical field [0001] The invention belongs to the technical field of slow-release carbon source materials in water treatment, and more specifically relates to a method for quickly evaluating the carbon release performance of slow-release carbon source materials. Background technique [0002] Since most denitrifying bacteria are heterotrophs, they need to use external carbon sources to grow and metabolize. However, there are generally insufficient carbon sources in sewage treatment plants and nitrate-polluted water bodies in southern cities in my country, which often become an important factor restricting the efficiency of biological nitrogen removal. To obtain the ideal denitrification and denitrification effect, an external carbon source is needed to supplement the denitrification and denitrification electron donor. The existing external carbon sources can generally be divided into two categories: one is the traditional carbon source based on liquid organic matter such a...

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Problems solved by technology

[0008] The purpose of the present invention is to overcome the disadvantages in the prior art that the carbon release performance evaluation methods are not uniform and require a long time, resulting in the inability to quickly evaluate the carbon release performance and complicated operation, and provide a slow-release carbon source material. A rapid evaluation method for carbon release performance, the present invention is based on the second-order kinetic process satisfied by the carbon-release material carbon release process, and obtains the parameters in the second-order kinetic equation by investigating the change of COD in the solution with time c m and K Value, and then can quickly evaluate the carbon release performance of the slow-release carbon source material, with high accuracy, so that the preparation formula of the slow-release carbon source material can be optimized, and the optimal formula can be quickly determined

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