The concentration of NH 3 -N in the QR showed a trend of high levels in winter and low levels in summer, with the highest concentration in late November (11.7 mg/L) and the lowest concentration in mid-July (1.15 mg/L; Fig. 4 E).
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Innovative adaptation of coagulation-sedimentation-filtration process in lightly polluted urban rivers with seasonal high turbidity.
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