Significantly reduce surplus sludge while also lowering environmental impact. Reduction in costs for chemicals, management, and industrial waste disposal. Successful real machine tests. This introduces the load mitigation device "NIIKURA AERATION SYSTEM" and the sludge volume reduction device "NIIKURA Oni Taiji," which contribute to reducing surplus sludge generated from wastewater treatment, thereby helping to control costs and lessen environmental impact. **Features of "NIIKURA AERATION SYSTEM":** - Stabilizes wastewater by increasing dissolved oxygen in unstable wastewater, thereby reducing generated sludge. - Low environmental impact as it does not use chemicals. - Capable of reducing costs for coagulants, sludge treatment, and maintenance. - Reduces unpleasant odors from wastewater and improves the working environment. **Features of "NIIKURA Oni Taiji":** - Ozone completely dissolves in wastewater within the device, so there is no "waste ozone." - Significant reduction of surplus sludge is possible. - Contributes to reducing sludge treatment costs. - When used in conjunction with "NIIKURA AERATION SYSTEM," surplus sludge can be reduced to nearly zero.