Fine Bubble Delivery For Potable Water, Wastewater, And Clean Water Treatment

A method of manufacturing a flexible tubing for fine bubble aeration, comprising:

• providing a raw tubing material;
• extruding the tubing material into a flexible tubing having an upper portion of a given cross-sectional area, a lower portion of a selected cross-sectional area larger than said given cross-sectional area of the upper portion, and a longitudinal air passageway defined by the upper and lower portions;
• curing the flexible tubing;
• and
• cutting micro-slits through the upper portion of the flexible tubing, wherein said extruding, curing, and cutting are performed by an automated, one-stage production line.

A flexible tubing for fine bubble aeration, comprising:

• an upper portion and a lower portion generally defining the tubing, the tubing having a proximal end and a distal end;
• an air passageway defined by the upper portion and the lower portion;
• a plurality of micro-slits through the upper portion and communicating with the air passageway and the outside environment;
• and
• a substantially hollow secondary lumen defined by the lower portion and adapted for passing a fluid therethrough when the tubing is submerged in a body of water.

A flexible tubing for fine bubble aeration, comprising:

• an upper portion and a lower portion generally defining the tubing, the tubing having a proximal end and a distal end;
• an air passageway defined by the upper portion and the lower portion;
• a plurality of micro-slits through the upper portion and communicating with the air passageway and the outside environment;
• and
• a tether embedded in one of the upper and lower portions, extending beyond at least one of the proximal and distal ends of the tubing, and adapted for securing the tubing when submerged in a body of water.