Method for measuring formation potential of novel nitrogen-containing disinfection by-product trichloroacetamide in drinking water

Abstract

The invention belongs to the technical field of municipal water supply and drainage engineering and environmental engineering, and discloses a method for measuring a formation potential of a novel nitrogen-containing disinfection by-product trichloroacetamide in drinking water. The method comprises the following steps of: determining the pH value of a culturing solution, determining the adding amount of chlorine and the culturing time, and measuring the concentration of the generated trichloroacetamide, wherein the step of determining the pH value of the culturing solution comprises the following steps of: controlling the temperature of the culturing solution at 23+ / -2 DEG C and experimenting without lights, and utilizing acid or alkali to adjust the pH value of the culturing solution to 4-6 under the condition that the adding amount of the trichloroacetamide is 0.5 micromole / liter; and the step of determining the adding amount of the chlorine and the culturing time comprises the following steps of: measuring values of soluble organic nitrogen and ammonia nitrogen in a water sample and calculating the adding amount of C12, and culturing for 3 days. According to the special method which is applicable to measuring the formation potential of the trichloroacetamide, established by the invention, the precursor level of the trichloroacetamide can be sufficiently represented and effective source control of the TCAcAm (Trichloroacetamide) can be carried out on water supply plants, thus the safety of the drinking water is improved.

Description

technical field [0001] The invention belongs to the technical field of municipal water supply and drainage and environmental engineering, and relates to a method for measuring the formation potential of trichloroacetamide, a novel nitrogen-containing disinfection by-product in drinking water. Background technique [0002] With the continuous concern on drinking water safety and the rapid development of water analysis technology and toxicology research, a large number of drinking water disinfection by-products (DBPs) have been identified. Recent studies have found that some newly discovered DBPs that have not yet been included in the corresponding national management regulations may be far more harmful to the human body than DBPs that have been included in regulations such as trihalomethanes (THMs) and haloacetic acids (HAAs) (Richardson, S.D., et al., Occurrence, genotoxicity, and carcinogenicity of regulated and emerging disinfection by-products in drinking water: A review ...

AI Technical Summary

Problems solved by technology

The disadvantage is that the cultivation time is too long and the dosage of chlorine is too large, which will lead to the hydrolysis of unstable halogenated N-DBPs such as TCAcAm, and cannot reflect the maximum production amount of TCAcAm (that is, the production potential)

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