WATER TREATMENT APPARATUS AND METHOD

• US 3,598,726 A
• Filed: 08/27/1968
• Issued: 08/10/1971
• Est. Priority Date: 08/27/1968
• Status: Expired due to Term

• Current Assignee: Envirex Incorporated
• Original Assignee: Fredrick M. Welch
• Inventors: Welch, Fredrick M.
• Application Number:
  US04/755,616
• Time in Patent Office: 1,078 Days
• US Class Current: 210/602
• CPC Class Codes: C02F 3/082 Rotating biological contactors
• CPC Class Codes: C02F 3/32 characterised by the animals or plants used, e.g. algae
• CPC Class Codes: Y02W 10/10 Biological treatment of water, waste water, or sewage
• CPC Class Codes: Y02W 10/37 using solar energy

Abstract

AN APPARATUS FOR AND METHOD OF REMOVING NUTRIENTS SUCH AS NITRATES, PHOSPHATES OR CARBONACEOUS MATERIALS FROM WATER. THE WATER TO BE TREATED IS CONTACTED BY ROTATINGS DISKS HAVING TAPERED SURFACES. ALGAE ARE SUPPLIED TO THE WATER AND ARE PICKED UP BY THE ROTATING DISKS, BEING SUPPORTED BY THE TAPERED SURFACES OF THE DISKS. THE ALGAE ON THE DISKS ARE EXPOSED TO THE COMBINED EFFECTS OF SUNLIGHT, EITHER NATURAL OR ARTIFICIAL, AND TO AN ATMOSPHERE OF CARBON DIOXIDE (CO2). THE ALGAE REMOVE THE NUTRIENTS FROM THE WATER, AND REDUCE THE CARBON DIOXIDE PRESENT IN THE ATMOSPHERE ABOVE THE LIQUID TO OXYGEN (O2).

Claims