GUO Nuo-wei,YU Tai-ping,TAN Bin,et al.Simultaneous Degradation of Coking Wastewater by Fractional Oxidation-Flocculation Coupling Process[J].China Water & Wastewater,2020,36(16 16):116-120.
Simultaneous Degradation of Coking Wastewater by Fractional Oxidation-Flocculation Coupling Process
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
16 16
Page:
116-120
Column:
Date of publication:
2020-08-17
- Abstract:
- Due to the unstable effluent quality of a coking wastewater treatment plant in Hubei Province, the original advanced treatment process was modified. The original coagulation tank was transformed into an oxidation tank, and the composite oxidant containing ferrate, NaClO and Na2CO3 was added to make full use of the intermediate products, the final products and the synergistic effect between agents in the reaction process. By optimizing the ratio of compound agents, the concentration and dosage of Na2CO3, and the adjustment of pH at different stages, the fractional oxidization-flocculation coupling was realized in the same tank, so as to remove multiple pollutants such as COD, NH3-N, cyanide, thiocyanide, and volatile phenol simultaneously. The operation result showed that the modified treatment process had a strong impact load resistance capability, and the effluent COD, NH3-N, cyanide, and volatile phenols reached the direct discharge limits in table 2 of the Emission Standard of Pollutants for Coking Chemical Industry (GB 16171-2012).
Last Update:
2020-08-17