City's Emergency Water Source Field in North China with the Example of Changchun City

Chang-lei, Dai; Chi, Baoming; Liu, Zhong-pei

doi:10.1016/j.proenv.2012.01.306

Cited by 5 publications

(3 citation statements)

References 3 publications

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“…Majority of attempts have focused on new materials, such as photocatalytic [7], electrodialysis [8], membrane [9], biological remediation [10], activated carbon [11], and ferrous iron [12]. Obviously, the above methods lack feasibility for removing bromate from suddenly polluted raw water because of short duration and high concentration of bromate [1]. Magnetic ion-exchange (MIEX) resin is a potential candidate as an adsorbent for removing bromate owing to its relatively small particle size (180 μm, 2-5 times smaller than traditional ion-exchange resin), providing much greater external surface area that allows rapid adsorptive removal of pollutant.…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

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Adsorption of bromate from emergently polluted raw water using MIEX resin: equilibrium, kinetic, and thermodynamic modeling studies

Ding

Luo

et al. 2015

Desalination and Water Treatment

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A B S T R A C TThis study investigated the kinetics, equilibrium, and thermodynamics of bromate adsorbed on magnetic ion-exchange (MIEX) resin by batch experiments. The pseudo-second-order kinetic model could well describe the adsorption process, and the film diffusion controlled the whole adsorption rate. The Langmuir and Redlich-Peterson isotherm models fitted well the equilibrium data. High removal efficiency of bromate was observed at neutral pH. Other coexistent anions present in raw water affected negatively the removal of bromate significantly. The thermodynamic studies showed the adsorption was a spontaneous thermodynamically, endothermic, and entropy driving process. These analyses on the average free energy, activation energy of adsorption, and quantity changes of bromate and chloride ions in solution before and after adsorption demonstrated that the removal mechanism of bromate adsorbed on MIEX resin was an ion-exchange reaction. Results of the findings suggested that MIEX resin could be utilized effectively to remove bromate from emergently polluted raw water.

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Section: Desalination and Water Treatmentmentioning

confidence: 99%

“…Recent years, sudden accidents of water source pollution are on the rise in China [1]. This poses a serious threat to the security of drinking water.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of bromate from emergently polluted raw water using MIEX resin: equilibrium, kinetic, and thermodynamic modeling studies

Ding

Luo

et al. 2015

Desalination and Water Treatment

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“…The results showed that short-term emergency water supply had little impact on the environment. According to the characteristics of emergency water supply, Dai et al [26] divided water sources into emergency water sources and backup water sources. Taking a northern city in China as an example, a systematic study was conducted on the factors affecting groundwater sources and the environmental effects caused by emergency withdrawal.…”

Section: Introductionmentioning

confidence: 99%

Water Level Prediction of Emergency Groundwater Source and Its Impact on the Surrounding Environment in Nantong City, China

Cai

Ping

Shen

et al. 2020

Water

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Based on the geological and hydrogeological conditions, and in situ hydrogeological tests of the emergency groundwater source in Nantong City, China, a 3D numerical model of the heterogeneous anisotropy in the study area was established and calibrated using data from pumping and recovery tests. The calibrated model was used to simulate and predict the water level of the depression cone during the emergency pumping and water level recovery. The results showed that after seven days of pumping, the water level in the center of the depression cone ranged from −51 m to −55 m, and compared with the initial water level, the water level dropped by 29 m to 32 m. The calculated water level has a small deviation compared with that of the analytical solution, which indicates the reliability and rationality of the numerical solution. Furthermore, during water level recovery, the water level of pumping wells and its surroundings rose rapidly, which was a difference of about 0.28 m from the initial water level after 30 days, indicating that the groundwater level had recovered to the state before pumping. Due to the emergency pumping time is not long, the water levels of Tonglu Canal, surrounding residential wells, and other aquifers will not be affected. After stopping pumping, the water level recovers quickly, so the change of water level in a short time will not lead to large land subsidence and has little impact on the surrounding environment.

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Development tendency analysis for the water resource carrying capacity based on system dynamics model and the improved fuzzy comprehensive evaluation method in the Changchun city, China

Wang

Xiao

et al. 2021

Ecological Indicators

134

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City's Emergency Water Source Field in North China with the Example of Changchun City

Cited by 5 publications

References 3 publications

Adsorption of bromate from emergently polluted raw water using MIEX resin: equilibrium, kinetic, and thermodynamic modeling studies

Adsorption of bromate from emergently polluted raw water using MIEX resin: equilibrium, kinetic, and thermodynamic modeling studies

Water Level Prediction of Emergency Groundwater Source and Its Impact on the Surrounding Environment in Nantong City, China

Development tendency analysis for the water resource carrying capacity based on system dynamics model and the improved fuzzy comprehensive evaluation method in the Changchun city, China

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