Apparatus and method for reduction in ammoniacal nitrogen from waste waters

Patent metadata

Field	Value
Publication number	US-9725338-B2
Application number	US-201615227428-A
Country	US
Kind code	B2
Filing date	Aug 3, 2016
Priority date	Oct 11, 2011
Publication date	Aug 8, 2017
Grant date	Aug 8, 2017

Abstract

A method for treating effluent provides the effluent as an input to an apparatus having a vortex diode with aeration. The apparatus induces a cavitation assisted with aeration for the high rates of ammoniacal nitrogen in an orifice and the vortex diode with or without inserts/stabilizers to generate radicals, which reduce ammoniacal nitrogen of wastewater effectively during effluent treatments.

First claim

What is claimed is:

1. A method for treating effluent by providing the effluent as an input to an apparatus comprising a vortex diode with aeration, said vortex diode comprising:
i. a chamber provided with at least one inlet as a tangential port, wherein a flow entering from the tangential port sets up a resistance mode of an operation;
ii. a vortex stabilizer connected to the chamber, wherein said vortex stabilizer comprises a base with or without threads and an insert which lies within the chamber, the insert being symmetrical around an axis of an axial port having a geometrical shape formable by revolving either a straight connecting line having slope or a curved line between a point on the axis and a point lying on the base opposite to the axial port; and
iii. the axial port provided in the chamber for discharging treated effluent water,
wherein the vortex stabilizer has a diameter in a range of 10 to 40% of a diameter of the chamber and has a height less than 15% of the diameter of the chamber such that the method enhances reduction of an ammoniacal nitrogen content of the effluent.

2. The method according to claim 1 , wherein said vortex diode is used in combination with at least one selected from the group consisting of ion exchange, alum treatment, Fenton, electro-Fenton, photo-Fenton, H 2 O 2 , Ozone, Cl 2 , ClO 2 , and anaerobic or aerobic biological oxidation.

3. The method according to claim 1 , wherein said treatment enhances gas yield of anaerobic digestion.

4. The method according to claim 1 , wherein the effluent comprises at least one selected from the group consisting of industrial waste, domestic waste, chemical waste, paper industry waste, distilleries waste, textile waste, and dyeing industries waste.

5. The method according to claim 1 , wherein the aeration is carried out with air or oxygen.

6. An apparatus for treating effluent, said apparatus comprising a vortex diode with aeration, said vortex diode comprises:
i. a chamber provided with at least one inlet as a tangential port, wherein a flow entering from the tangential port sets up a resistance mode of an operation;
ii. a vortex stabilizer connected to the chamber, wherein said vortex stabilizer comprises a base with or without threads and an insert which lies within the chamber, the insert being symmetrical around an axis of an axial port having a geometrical shape formable by revolving either a straight connecting line having slope or a Curved line between a point on the axis and a point lying on the base opposite to the axial port; and
iii. the axial port provided in the chamber for discharging treated effluent water,
wherein the vortex stabilizer has a diameter in a range of 10 to 40% of a diameter of the chamber and has a height less than 15% of the diameter of the chamber such that the apparatus enhances reduction of an ammoniacal nitrogen content of the effluent.

7. The apparatus according to claim 6 , wherein said vortex diode is used in combination with at least one selected from the group consisting of ion exchange, alum treatment, Fenton, electro-Fenton, photo-Fenton, H 2 O 2 , Ozone, Cl 2 , ClO 2 , and anaerobic or aerobic biological oxidation.

8. The apparatus according to claim 6 , wherein the effluent comprises at least one selected from the group consisting of industrial waste, domestic waste, chemical waste, paper industry waste, distilleries waste, textile waste, and dyeing industries waste.

9. The apparatus according to claim 6 , wherein the aeration is carried out with air or oxygen.

Assignees

• Council Scient Ind Res

Inventors

• Ranade Vivek Vinayak
• Kulkarni Amol Arvind
• Bhandari Vinay Manoharrao

Classifications

• C02F2103/28

  from the paper or cellulose industry · CPC title

• F15D1/0015

  Whirl chambers, e.g. vortex valves · CPC title

• C02F1/722

  Oxidation by peroxides · CPC title

• C02F3/02

  Aerobic processes · CPC title

• C02F2305/026

  Fenton's reagent · CPC title