WU Peng-kun,CUI Chang-gui,ZHA Kai,et al.Effect of Polychloride Ferric Sulfate on Methane Desulfurization of Sludge Anaerobic Digestion[J].China Water & Wastewater,2020,36(17 17):75-78.
Effect of Polychloride Ferric Sulfate on Methane Desulfurization of Sludge Anaerobic Digestion
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
17 17
Page:
75-78
Column:
Date of publication:
2020-09-01
- Keywords:
- polychloride ferric sulfate (PFS); desulfurization of biogas; hydrogen sulfide; sludge anaerobic digestion
- Abstract:
- Dosing of polychloride ferric sulfate(PFS) in sewage treatment process could significantly reduce the content of hydrogen sulfide (H2S) produced in sludge anaerobic digestion while achieving denitrification and phosphorus removal, and the desulfurization effect was better than the traditional wet and dry desulfurization process. By comparing the content of H2S produced by sludge digestion before and after adding PFS to the sewage treatment system of a sewage treatment plant in North China, it was found that the content of H2S in biogas could be averagely reduced from 7 696 mg/m3 to 1 476 mg/m3 after traditional wet and dry desulfurization. After adding 19.13-24.60 mg/L of PFS to the MSBR, the content of H2S in biogas produced by sludge digestion could be reduced to below 100 mg/m3, and the lowest was 48 mg/m3, indicating that the biogas could be directly used for power generator without traditional desulphurization.
Last Update:
2020-09-01