Gas-liquid dispersion devices provided with partitioning members, gas-liquid contact apparatus, and wastewater treatment systems provided with the same

A gas-liquid dispersion device, which comprises:

• a flow device in which a liquid forms a continuous phase and a gas flows upward;
• and
• a perforated plate which is positioned above and downstream of a gas-liquid passage in said flow device in which the mixed phase of the gas and liquid is produced, and which forms a separated liquid-conducting channel extending from said perforated plate toward a gas inflow opening side thereof, wherein the gas is dispersed upon passing through the perforated plate and the liquid is guided to and passed through the liquid-conducting channel, the liquid-conducting channel is formed between a partitioning plate which extends from a peripheral portion of the perforated plate and an inside surface of the gas-liquid passage of said flow device;
• and wherein the cross-sectional area of the liquid-conducting channel is so determined that the liquid flows at a velocity of 0.02 to 10 meters per second through the liquid-conducting channel.

A gas-liquid dispersion device;

• which comprises:
• a flow device in which a liquid flows upwardly forming a continuous phase and in which a gas flows upward, said gas-liquid dispersion device comprising at least two partitioning members positioned above and downstream said flow device arranged with a specific distance therebetween so as to interrupt a gas-liquid passage, in which a mixed phase of the gas and liquid is produced, each of the partitioning members comprising one of (a) a perforated plate having a plurality of through holes wherein a top of each of said through holes is on a downstream-side surface of said perforated plate, (b) a single-hole plate having a single through hole provided with a collision plate fitted close to an outflow opening of the through hole wherein a top of said through hole is on a downstream-side surface of said single-hole plate, and (c) a perforated plate having a plurality of through holes provided with a collision plate fitted close to outflow openings of the through holes wherein a top of said through holes is on a downstream-side surface of said single-hole plate;
• and
• wherein a liquid supply member and a gas supply member are provided below said at least two partitioning members.

A gas-liquid dispersion device, which comprises:

• a flow device in which a liquid forms a continuous phase and a gas flows upward;
• and
• a perforated plate which is positioned above and downstream of a gas-liquid passage in said flow device in which the mixed phase of the gas and liquid is produced, and which forms a separated liquid-conducting channel extending from said perforated plate toward a gas inflow opening side thereof, wherein the gas is dispersed upon passing through the perforated plate and the liquid is guided to and passed through the liquid-conducting channel, the liquid-conducting channel is formed between a partitioning plate which extends from a peripheral portion of the perforated plate and an inside surface of the gas-liquid passage of said flow device;
• and a baffle is provided on the upstream side of the liquid-conducting channel.

A gas-liquid dispersion device, which comprises:

• a flow device in which a liquid forms a continuous phase and a gas flows upward;
• and
• a perforated plate which is positioned above and downstream of a gas-liquid passage in said flow device in which the mixed phase of the gas and liquid is produced, and which forms a separated liquid-conducting channel extending from said perforated plate toward a gas inflow opening side thereof, wherein the gas is dispersed upon passing through the perforated plate and the liquid is guided to and passed through the liquid-conducting channel, the liquid-conducting channel is formed between a partitioning plate which extends from a peripheral portion of the perforated plate and an inside surface of the gas-liquid passage of said flow device;
• and wherein said flow device comprises a device causing an upward flow of the liquid.