Based on our independently developed S-TE thermophilic bacteria sludge hydrolysis technology, we have successfully screened and domesticated Bacillus thermophilus AT07-1. High-temperature cell disruption at 60-70℃ achieves optimal SS reduction of 31.2%-45.96% and VSS reduction of 45%-66% under optimal conditions. In the Haipo River pilot project, this reduced sludge by 58,000 tons annually, saving 20 million yuan annually in sludge transportation and disposal costs, and directly halving the pressure on sludge disposal.
Industrial Wastewater Treatment
Industrial wastewater has high salinity and large load fluctuations. The thermophilic bacteria exhibit significant salt tolerance; at salinity ≤2%, SCOD and protein dissolution show no decrease. At 2% salinity, using 0.05g/gTSS biosurfactant to break up sludge EPS significantly improves the efficiency of extracellular enzyme contact with substrates, resulting in a significant increase in COD dissolution.
Mining Wastewater Treatment
Mining wastewater is characterized by high salinity, high heavy metal content, and low C/N ratio. Front-end treatment utilizes self-employed water treatment agents (heavy metal precipitants and flocculants) to pre-precipitate heavy metals for interception.
Paper Mill Wastewater Treatment
Paper mill wastewater contains large amounts of cellulose, lignin, and macromolecular organic matter. A 1:3 mixture of primary fiber sludge and secondary biochemical sludge achieves optimal hydrolysis results. Fiber flocs are decomposed by extracellular enzymes of thermophilic bacteria, reducing suspended solids (SS) by 27%–45%. This significantly reduces the difficulty of dewatering fiber sludge and substantially decreases the amount of sludge transported off-site.
