JAUE2017-124: Effects of Different Pollution Loads on the Efficiency of Constructed Wetland in Cold Region

Abstract

As China's sewage treatment capacity is very limited, artificial wetland workers are widely used, which is easy
to operate and maintain, and the purification effect is remarkable. The effect of different pollution load on the
treatment of constructed wetland is different, Specific performance is High ammonia water pollution load
condition, to the substrate without gravel plants, canna, Lythrum wetland removal efficiency of NH4+
-N, TP and
COD influent ammonia below the low load. The removal efficiency of NH4+
-N and TP was improved under the
condition of high ammonia nitrogen influent, and the removal efficiency of COD was decreased. The removal
efficiency of NH4+
-N and COD was lower than that of low TP water loading. The removal efficiency of NH4+
-N
and COD was lower than that of low phosphorus. Under the condition of high COD and high COD pollution load,
the removal efficiency of COD was lower than that of low COD in the artificial wetland with no slag as the
substrate. The removal efficiency of NH4+
-N and TP was also affected by the low efficiency of COD removal
under low pollution load