Design Strategy of Emergency Pools at Source Water Protection Areas

The pollution problem arising from the flushing of initial rainwater and wastewater from accidents while transporting dangerous goods to source water protection areas needs to be solved as soon as possible. Therefore, the design of corresponding environmental protection measures should be considered in the engineering design stage. It is necessary to analyze the specific work in combination with engineering examples. Under this background, this paper first briefly expounds the precautions in accident risk analysis and the design of tank capacity and tank body. Finally, by analyzing actual cases, this paper systematically studies the design strategy of emergency pool in source water protection area, hoping to provide new development ideas for the upgrading of relevant work.

Algae control in oligotrophic surface water under the joint effect of nutritional competition and microbial algae-lytic substance

Harmful algal abnormal proliferation presents the most severe threat to the quality of oligotrophic surface water even in source water such as South-to-North Water Diversion Project in China. A novel...

Measures to Provide Settlements with Quality Drinking Water: Assessment of the Potential by the Example of the Odessa Agglomeration

The rapid urbanisation of the settlements of the Odessa agglomeration has negatively affected the quality of the drinking water that is transported to consumers. The purpose of this study was to determine the most effective measures to provide settlements with quality drinking water. In order to achieve this goal, possible options for measures were considered, and an assessment and comparative analysis of the potential of the proposed options were executed. The most effective measures were evaluated on two criteria: compliance with the principles of sustainable development and whether the measures were effective, reliable and comfortable for consumers when implemented. The factors that influenced the decision-making were the situation and conditions of the implementation of the measures, laboratory tests of the source water and laboratory tests of the water after the treatment process and consumer awareness of participation. The findings demonstrated that a measure was effective if it met the stated criteria. The results of the study are planned to be used as reference material in the elaboration of an integrated plan for the development of settlements, for decision-making in the organisation of recreation and health-related areas and for other resource planning activities.

Effects of Seasonal Thermal Stratification on Ammonia Nitrogen Transformation in a Source Water Reservoir

Seasonal thermal stratification has a significant impact on water quality. In this paper, the variation of vertical distribution of ammonia nitrogen in a source water reservoir was studied, on the base of field monitoring data. The dominant factor of the variation in ammonia nitrogen is the anaerobic environment caused by the seasonal thermal stratification, which leads to the degradation of nitrogen-containing organic compounds in the sediments. To determine the rates of ammonia accumulation, an in situ experimental chamber was used. The results showed that, before the formation of thermal stratification in the reservoir, sediments in the bottom of the water have a high tendency to release ammonia; the rates of ammonia accumulation in the overlying water are 40.31–111.41 mg·m−2·d−1. However, thermal stratification causes changes in the physical and chemical properties of the sediment and reduction in the degradability of the nitrogen-containing compound in the sediment. The rates of ammonia accumulation (39.44–44.65 mg·m−2·d−1) after thermal stratification are lower than before. Considering the water pollution hazards caused by seasonal thermal stratification, it is necessary to take corresponding emergency response measures to cope with the possibility of water pollution risk.