The groundwater system is polluted by chlorinated hydrocarbon pollution
in eastern Jinan, Shandong province, China, exceeding the limit of
pollutants concentration in class Ⅲ of Groundwater Quality Standards
(GQS, GB/T 14848-2017). In order to improve the current situation of
chlorinated hydrocarbon pollutants in groundwater system of eastern
Jinan, the optimization study of the pollution control is carried out.
In this paper, the pollutant of carbon tetrachloride in groundwater
system is taken as the main research object. By using GMS numerical
simulation software to establish the solute transport model of carbon
tetrachloride. The simulation results illuminate that with the passage
of time, the concentration of carbon tetrachloride decreases, but the
acreage of pollution plume in groundwater still has little change, and
it is hard to reach the limit standard of 2.0μg/L in class Ⅲ of GQS
within a short time. Sequentially, on the basis of simulation model, the
optimization of pumping and injection wells is conducted in the
pollution control field of research region. The results turn out that
the layout of 8 pumping and 5 injection wells has the best control
effect of carbon tetrachloride in groundwater system, the pollutant
concentration reached the limit standard of 2.0μg/L in only 1187d, and
the acreage of pollution plume in control field reduced from 21.80km2 to
12.21km2. In summary, through the optimal pollution control scheme of
carbon tetrachloride, the time for pollutant concentration to reach
2.0μg/L has been reduced, and the acreage of pollution plume has been
effectively controlled. This work further investigates the promoting
effect of injection wells on hydraulic control of groundwater pollution,
which can accelerate the circulation of the groundwater system and save
the treatment time, providing a relatively practical way for the
prevention and control of chlorinated hydrocarbon pollutants.
Fabricating rutile nanopins on an anatase hollow sphere structure with enhanced photoactivity performance
