Wastewater treatment system suitable for active coke desulfurization and denitrification technology

Abstract

The invention discloses a wastewater treatment system suitable for an activated coke desulfurization and denitrification technology. The wastewater treatment system comprises a pH regulating system, asedimentation system and a distillation denitrification system, wherein the pH regulating system comprises a water collection regulating pool, an accident pool and a pH regulating pool, the water collection regulating pool and the accident pool are respectively connected to the pH regulating pool through pipelines; and the sedimentation system comprises a primary sedimentation pool, a high-efficiency sedimentation pool, an air flotation machine, a sand filtration system and an intermediate water pool which are sequentially connected through pipelines, the pH regulating pool is connected to the primary sedimentation pool, and the sand filtration system is connected to the high-efficiency sedimentation pool through a pipeline. The wastewater treatment system is small in occupied area and high in land utilization rate; chemical separation wastewater generated in the activated coke process and residual ammonia water are distilled in combination with distillation denitrification, the NH3-Ncontent of the wastewater is reduced, and removal of wastewater sludge and high deamination efficiency can be guaranteed at the same time.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a wastewater treatment system suitable for active coke desulfurization and denitrification technology. Background technique [0002] The flue gas purification system of the sintering machine and briquettes usually adopts the integrated desulfurization and denitrification technology of activated coke, and the pollutants in the wastewater produced by this technology are mainly high-concentration COD and NH 3 -N, Cl - , suspended matter and a small amount of heavy metal ions, etc. The composition of wastewater produced by desulfurization and denitrification is complex. Most of the wastewater is dark black, with high salt content and acidic wastewater. The ammonia nitrogen content of wastewater produced by different denitrification processes varies greatly, some are as high as 5000mg / L, and some are below 200mg / L; Therefore, the existing ammonia nitrogen wastewater treatment system o...

AI Technical Summary

Problems solved by technology

The composition of wastewater produced by desulfurization and denitrification is complex. Most of the wastewater is dark black, with high salt content and acidic wastewater. The ammonia nitrogen content of wastewater produced by different denitrification processes varies greatly, some are as high as 5000mg / L, and some are below 200mg / L; Therefore, the existing ammonia nitrogen wastewater treatment system often has problems such as complex structure, large area occupation, and low ammonia removal efficiency.

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