Foul Condensate wastewater Technology

Foul Condensate Anaerobic Wastewater System

Foul Condensate Wastewater contains Highly concentration Reduced Sulfide. The main components are Methyl Mercaptan (CH3SH), Dimethyl Sulfide (CH3SCH3), Dimethyl Disulfide (CH3SCH3), Hydrogen Sulfide (H2S) and Volatile Sulfide, etc. The content of Sulfide is high. If the Reduced Sulfide without efficient processing in the general anaerobic treatment, it will not only make the wastewater with bad smell, but also inhibit the growth of Anaerobic bacteria and Methanogen. If the concentration of Sulfur substance is high, the system will collapse and it can’t run normally. Therefore, this wastewater is difficult to be treated by the ordinary Anaerobic Treatment.
Foul Condensate is designed to improve Anaerobic wastewater biological treatment system. This system can decrease the COD in pulp and decrease the content of Sulfide of Foul Condensate and save energy costs from steam stripping. It has obvious results on the treatment of Foul Condensate wastewater form pulping. It is a high efficiency and energy-saving process. (Patent Number: 201810904837.7)
It has the following features:
  1. Save energy cost caused by steam stripping.
  2. Produce methane as energy source.
  3. Reduce overall operational cost of subsequent wastewater treatment process (electricity, chemical consumption and sludge treatment cost). 
  4. Increase organic pollutant removal efficiency in wastewater treatment plant.
Laboratory Preliminary Test Conclusion
  • High concentrated foul condensate wastewater is excellent for COD biological degradation. After cultivation, COD removal could reach >90%.

  • After cultivation, it shows that the sludge become granular, has good sedimentation ability, and good resistant to pollutant as well.
Case Study (Guangdong Ding Feng Paper)

High Concentrated Foul Condensate Wastewater Design Quality & Quantity

ParameterRaw WastewaterEffluent Quality After TreatmentRemarks
Q (m3/day)≤ 636≤ 636
CODCr, T (mg/l)≤ 8500≤ 1275Effluent COD value is obtained from filtered supernatant of effluent wastewater. COD ≥ 85%
SS (mg/l)≤ 30≤ 150
Temperature (°C)< 40
pH (--)∼ 9∼ 7