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This study proposes a coagulationdissolved air flotation and microwave drying processes based on biologic coagulant for harvesting cyanobacteria biomass, and a pilot system with a treatment capacity of 20 m³/h was developed. Continuous operation in Lake Tai demonstrated that the system achieved a harvesting efficiency of up to 95% for cyanobacterial biomass, with the moisture content of the biomass reduced to below 85% after dehydration. After 10 min of continuous microwave drying, the moisture content of the biomass was further reduced to below 10%, with no adverse effects on the main nutrients, such as proteins and sugars. Further technoeconomic and cost sensitivity analyses revealed that the total cost of harvesting and drying cyanobacterial biomass was 4 134.1 ¥/t dry biomass, with bioflocculant costs accounting for more than 50% of this total. The processing costs were found to be significantly influenced by the dosage and cost of bioflocculants, as well as the hourly microwave drying capacity.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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