Evaluation of disinfection by-products (DBPs) formation
Trichloromethane (TCM) was the dominant product among all DBPs detected. The anammox euent has a low specic TCM formation potential of 0.778 mmol/mmol C and a trichloronitromethane (TCNM) formation potential of 0.0725 mmol/mmol C, leading to a TCM and TCNM formation potential ratio of 10.7.
Drivers of variability in disinfection by-product formation
Within each season, there was not any other observable clustering pattern, implying that seasonality was the main driver of variability of DBP formation potential, as already described earlier. However, the winter cluster for both FP and yield data showed clear sub-clusters based on system and reservoir depth (ESI Fig. S8 and S9).
Towards reducing DBP formation potential of drinking water by
DBP formation potential tests and in vitro bioassays were conducted after batch ozonation experiments of coagulated surface water with and without addition of tertiary butanol (t-BuOH, 10 mM) and hydrogen peroxide (H2O2, 1 mg/mg O3), and at different pH (6-8) and transferred ozone doses (0-1 mg/mg TOC).
Treatment of disinfection by-product precursors - PubMed
Formation of harmful disinfection by-products (DBPs), of which trihalomethanes (THMs) and haloacetic acids (HAAs) are the major groups, can be controlled by removal of natural organic matter (NOM) before disinfection. In the literature, removal of precursors is variable, even with the same treatment.
A Comparison of the Role of Two Blue-green Algae in THM and
The experiments examined the formation potential of these disinfection by-products 19 (DBPs) from both algae cells and extracellular organic matter (EOM) during four algal growth 20 phases. Algal cells and EOM of Anabaena and Microcystis exhibited a high potential for DBP 21 formation. Yields of total THMs (TTHM) and total HAAs (THAA) were
- What is the goal of developing a green economy in Tajikistan?
- The strategic goal of developing a green economy in the Republic of Tajikistan is to ensure economic development through the effective and rational use of natural resources, improving the standard of living and social stability of the population, as well as ensuring environmental balance in the long term.
- Are DBP precursors present in water a dominant role in formation potential?
- These results collectively indicate that the DBP precursors present in the water of each respective mesocosm type and/or the prevailing environmental conditions at the individual study site exerted a dominant role in the process of DBP formation potential within the scope of this investigation.
- Is Tajikistan a good country for energy security?
- According to the World Energy Trilemma Index ranking Tajikistan ranked top 10 countries on energy security. Also over the Independence period 2,400 km of roads, 326 bridges, 6 automobile tunnels, 219 km of railway were built to ensure rapid industrialization and infrastructure development of the country.
- Do DBP drivers influence water treatment decision-making?
- Lastly, relevant relationships between DBP drivers and formation have been identified in the literature (Valdivia-Garcia et al., 2019), but they have primarily aimed at aiding water treatment decision-making rather than monitoring and controlling the mobilization of DBP precursors in source waters from catchments and lakes.
- Which carbonaceous DBPs are covered by drinking water regulations?
- Nevertheless, current drinking water regulations primarily cover the better-characterized carbonaceous DBPs (C-DBPs), such as trihalomethanes (THMs) and haloacetic acids (HAAs), as well as chlorite, chlorate and bromate (Directive (EU), 2020/2184).
- What is the relationship between potential explanatory variables and DBP-FP?
- Arrows represent the relationship between potential explanatory variables and DBP-FP. Ellipses are shown with a 95 % confidence level and show the dispersion of the observations grouping by mesocosm type. Potential explanatory variables were overlaid on the NMDS plot as environmental vectors (Fig. 1).
