Application of the EGSB-CMBR Process to High-Concentration Organic Wastewater Treatment
Abstract
:1. Introduction
2. Materials and Methods
2.1. Water Volumes and Water Quality
2.2. Analytical Methods
2.3. Inoculating Sludge and Starting Method
2.4. Process Flow Diagrams
2.4.1. EGSB
2.4.2. CMBR
3. Results and Discussion
3.1. Operational Effect of the EGSB Reactor in the Commissioning Stage
3.2. Formation of Granular Sludge
3.3. CMBR
3.4. Operation Phase
4. Operation Cost Analysis
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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pH | COD (mg/L) | NH4+-N (mg/L) | Suspended Solids (SS) (mg/L) | |
---|---|---|---|---|
Inlet | 4.74–6.88 | 65,000–80,000 | 200–400 | 2290–3440 |
Effluent | 6-9 | 300 | 50 | 200 |
Time | Average Particle Size/ mm | Sludge State | The Rising Flow Rate of Liquid in the Reactor (m/h) |
---|---|---|---|
Start | 0.392 | Flocculent | 1 |
14 days | 0.436 | Flocculent (small amounts of fine particles) | 1 |
43 days | 0.668 | Partially granulated sludge | 2 |
86 days | 1.556 | Uniform granular sludge | 3 |
120 days | 1.542 | Uniform granular sludge | 3 |
pH | COD (mg/L) | NH4+-N (mg/L) | SS (mg/L) | |
---|---|---|---|---|
EGSB anaerobic section | 6.42 | 16,800 | – | 2020 |
EGSB microscopic section | 6.37 | 941 | 178.33 | 241 |
CMBR | 7.59 | 162 | 33.79 | 143 |
Total discharge | 7.55 | 141 | 33.03 | 83 |
Project | Details | Fees (RMB 10,000/Year) | Cost per Ton of Water (CNY/Ton) |
---|---|---|---|
Electricity costs | Electricity Tariff (0.75 CNY/kwh) | 4.25 | 4.66 |
Pharmacy costs | Potassium dihydrogen phosphate, urea, sodium bicarbonate, microbial promoter (added as appropriate for the operation) Other agents (flocculant polyacrylamide, coagulant polymeric aluminum chloride, ferric chloride, etc. used in sludge dewatering machines) | 3.83 | 4.2 |
Repair costs | Discounted at 2.2% of the original value of fixing assets | 1.21 | 1.33 |
Daily maintenance costs | Routine maintenance of fixed assets, including maintenance of automatic control systems, a strong inspection of dosage instruments, preventive testing of electrical equipment, and the cost of materials used for some routine repairs. At 1% of the original value of fixed assets | 0.55 | 0.60 |
Depreciation costs | Set useful life of 20 years, the residual value of assets at 10% | 2.475 | 2.71 |
Sludge disposal costs | Costs for sludge discharge, sludge dewatering, sludge compaction, off-site transport, and environmentally sound landfill disposal during reactor operation | 560 | 0.08 |
Other costs | For example, the water treatment process is used to flush various types of structures, membrane modules, treatment equipment water consumption, reactor operation, commissioning and routine maintenance of sewage, sludge test fee, greening costs, etc. | 1 | 1.48 |
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Zhang, X.; Wang, D.; Jin, Y. Application of the EGSB-CMBR Process to High-Concentration Organic Wastewater Treatment. Processes 2022, 10, 1039. https://doi.org/10.3390/pr10051039
Zhang X, Wang D, Jin Y. Application of the EGSB-CMBR Process to High-Concentration Organic Wastewater Treatment. Processes. 2022; 10(5):1039. https://doi.org/10.3390/pr10051039
Chicago/Turabian StyleZhang, Xuli, Dunqiu Wang, and Yue Jin. 2022. "Application of the EGSB-CMBR Process to High-Concentration Organic Wastewater Treatment" Processes 10, no. 5: 1039. https://doi.org/10.3390/pr10051039