Abstract: Waste gas/wastewater treatment equipment treats waste gas in a scrubber 18 by using micronanobubble water produced in a micronanobubble reaction vessel 31 as washing water. Waste gas is efficiently cleaned by the substance surface high-velocity cleaning function which micronanobubbles have. The washing water having been used in the waste gas treatment is reused in wastewater treatment in adjustment tank 1, denitrification tank 3 and nitrification tank 11 which constitute a wastewater treatment section. Thus, the micronanobubbles contained in the washing water are utilized in wastewater treatment, so that efficiency of wastewater treatment is enhanced.

Abstract: In a micronanobubble reaction vessel 3 of wastewater treatment equipment, wastewater containing organic matter is treated with micronanobubbles. Thereafter, the wastewater is introduced into an aeration tank 7. Part of organic matter in the wastewater is oxidized in the micronanobubble reaction vessel 3 by micronanobubble treatment prior to treatment with activity of microorganisms enhanced in the aeration tank 7. After organic matter load is thus reduced, the treatment water is introduced into the aeration tank 7, in which microorganisms exist in high concentration due to submerged membranes 17, so that the organic matter in wastewater can be effectively treated. This makes it possible to accomplish miniaturization of the aeration tank 7, reduction in scale of the whole equipment and therefore reduction in initial cost.

Abstract: A water treatment apparatus has a turbidity meter, which is a detection part, for detecting a generation state of bubbles in a micro/nano bubble generation state confirmation tank, as a turbidity of treatment water. The water treatment apparatus also has a controller, which is a control part, for receiving an signal representing the turbidity of treatment water detected by the turbidity meter, to control openings of air flow control valves in an interlocked manner in response to the signal, so that the amount of air flowing through the control valves is automatically controlled. The openings of the air flow control valves are controlled in an interlocked manner by the controller in such a way that the signal representing turbidity shows that the treatment water within the confirmation tank is whitely turbid (i.e., the turbidity shows not less than a specified value).

Abstract: In wastewater treatment equipment, a surfactant is added to a micronanobubble reaction vessel 3 by using a surfactant pump 8 and a surfactant tank 9 which constitute a surfactant adding section. Thereby, a micronanobubble generator 4 stably and efficiently produces micronanobubbles in the treatment water as raw water containing the surfactant in the micronanobubble reaction vessel 3. Thus, the micronanobubbles make it possible to efficiently pretreat the wastewater introduced into the micronanobubble reaction vessel. Consequently, it becomes possible not only to enhance efficiency of wastewater treatment but also to reduce a treatment load on wastewater treatment equipment 14 in a step subsequent to the pretreatment. Thereby, scale of the wastewater treatment equipment 14 is reduced.

Abstract: Waste gas/wastewater treatment equipment treats waste gas in a scrubber 18 by using micronanobubble water produced in a micronanobubble reaction vessel 31 as washing water. Waste gas is efficiently cleaned by the substance surface high-velocity cleaning function which micronanobubbles have. The washing water having been used in the waste gas treatment is reused in wastewater treatment in adjustment tank 1, denitrification tank 3 and nitrification tank 11 which constitute a wastewater treatment section. Thus, the micronanobubbles contained in the washing water are utilized in wastewater treatment, so that efficiency of wastewater treatment is enhanced.

Abstract: In a micronanobubble reaction vessel 3 of wastewater treatment equipment, wastewater containing organic matter is treated with micronanobubbles. Thereafter, the 5 wastewater is introduced into an aeration tank 7. Part of organic matter in the wastewater is oxidized in the micronanobubble reaction vessel 3 by micronanobubble treatment prior to treatment with activity of microorganisms enhanced in the aeration tank 7. After organic matter load is thus reduced, the treatment water is introduced into the aeration tank 7, in which microorganisms exist in high concentration due to submerged membranes 17, so that the organic matter in wastewater can be effectively treated. This makes it possible to accomplish miniaturization of the aeration tank 7, reduction in scale of the whole equipment and therefore reduction in initial cost.

Abstract: In wastewater treatment equipment, a surfactant is added to a micronanobubble reaction vessel 3 by using a surfactant pump 8 and a surfactant tank 9 which constitute a surfactant adding section. Thereby, a micronanobubble generator 4 stably and efficiently produces micronanobubbles in the treatment water as raw water containing the surfactant in the micronanobubble reaction vessel 3. Thus, the micronanobubbles make it possible to efficiently pretreat the wastewater introduced into the micronanobubble reaction vessel. Consequently, it becomes possible not only to enhance efficiency of wastewater treatment but also to reduce a treatment load on wastewater treatment equipment 14 in a step subsequent to the pretreatment. Thereby, scale of the wastewater treatment equipment 14 is reduced.

Abstract: A wastewater treatment device treats nitrogen wastewater containing hydrogen peroxide by using micro/nano bubbles generated in a micro/nano bubble reaction tank. Thereby, activity of microbes is increased in next denitrification tank and nitrification tank, so that microbial treatment efficiency can be increased and the denitrification tank and the nitrification tank can be downsized. Thus, the wastewater treatment device makes it possible to enhance treatment efficiency of nitrogen wastewater containing hydrogen peroxide and to reduce initial and running costs for wastewater treatment.

Abstract: A water treatment apparatus has a turbidity meter, which is a detection part, for detecting a generation state of bubbles in a micro/nano bubble generation state confirmation tank, as a turbidity of treatment water. The water treatment apparatus also has a controller, which is a control part, for receiving an signal representing the turbidity of treatment water detected by the turbidity meter, to control openings of air flow control valves in an interlocked manner in response to the signal, so that the amount of air flowing through the control valves is automatically controlled. The openings of the air flow control valves are controlled in an interlocked manner by the controller in such a way that the signal representing turbidity shows that the treatment water within the confirmation tank is whitely turbid (i.e., the turbidity shows not less than a specified value).

Abstract: A wastewater treatment device treats nitrogen wastewater containing hydrogen peroxide by using micro/nano bubbles generated in a micro/nano bubble reaction tank. Thereby, activity of microbes is increased in next denitrification tank and nitrification tank, so that microbial treatment efficiency can be increased and the denitrification tank and the nitrification tank can be downsized. Thus, the wastewater treatment device makes it possible to enhance treatment efficiency of nitrogen wastewater containing hydrogen peroxide and to reduce initial and running costs for wastewater treatment.