FIELD OF THE INVENTION

The present disclosure relates to a device and a method for conditioning industrial waste water and process water, by utilizing hydrodynamic cavitations in presence of magnetic field. In the method, water is introduced into water conditioning device, which contains local flow constriction element and magnetic field generating element. Local flow constriction element such as orifice, venturi and flow nozzle lead to formation of micro bubble followed by growth and collapse, due to swing of local static pressure. Micro bubbles implode violently due to the pressure recovery and result in generation of hydroxyl radical. Magnetic field overcomes the high energy barrier and enhances the initiation phase of hydroxyl radical formation; thereby enhances degradation and oxidation of organic substance. The magnetic field allows the dissolved solid to form in a suspended state; thereby reducing hardness of water, biological control and scale build up in pipes and equipment.
BACKGROUND OF THE INVENTION
The waste water generated in the refinery is dynamic in nature considering its characteristic and intensity to create nuisance in the environment. Mostly, the conventional technologies employed for waste water treatment emphasize on the biodegradable fraction of organic matter i.e., Biochemical Oxygen Demand (BOD), to analyze the degree of pollution. Other part i.e. non biologically degradable is often treated utilizing external oxidizing agent. Chemical oxygen demand (COD) measures both biodegradable as well as non biodegradable fraction of organic substance. Some of the effluent streams generated in refinery is highly toxic in nature with high COD and BOD content. They also contain high loads of sulphides, phenols and other contaminants which make it difficult to treat them in conventional biological system. The biological based system depends on the type of bacteria culture used in the treatment. These bacteria cultures have their own limitations when it comes to withstanding high amount of contaminant loads. In addition to that, high dissolved solid (DS) leads to scale build up in piping and associated equipment.
Therefore, a device and a method for in situ processes by virtue of hydrodynamic cavitations in presence of magnetic field has been developed in the present disclosure.
For instance, the document US7247244B2 discloses the processes and device by which organic substance in fluid is destroyed by combing oxidizing agent and ultraviolet light in

hydrodynamic cavitations environment. In this method, oxidizing agents is introduced into a local constriction of flow in a flow-through chamber. Cavitation bubbles which contain and /or are associated with the oxidizing agents form. Collapse of the cavitation bubbles produce pulses of ultraviolet light, thereby ionizing the oxidizing agents, producing hydroxyl radicals, and degrading and/or oxidizing the organic substances in the fluid. However, this device does not solve scaling issue in piping and associated equipment.
The present disclosure provides a device for non chemical water conditioning of industrial waste water. The disclosed device avoids any introduction of external oxidizing agent and enhances the formation of hydroxyl radical in presence of magnetic field. Magnetic field also reduces high dissolved solid (DS) content present in waste water.
Another document KR20160006583A discloses a water treatment apparatus using cavitations wherein, in order to generate mechanical and hydrodynamic cavitations, thousands of cavitations are generated in a short time by using an impeller rotating at a high speed, and micro bubbles generated herein and the activation energy are used to carry out water treatment. The use of rotating impeller at a high speed leads to high operating cost and does not address scale built up problem in pipes and associated equipments.
The present disclosure provides a cost effective method comprising of local constriction flow element such as orifice plate, venturi or flow nozzle and enhances the formation of hydroxyl radical in presence of magnetic field. On the other hand, magnetic field also reduces high dissolved solid (DS) content present in waste water; thereby reduces the scale build up in pipes and associated equipment.
The present disclosure addresses one or more problems as discussed above and other problems associated with the art by providing a device and a cost effective method for conditioning industrial waste water by virtue of hydrodynamic cavitations in presence of magnetic field.
SUMMARY OF THE INVENTION
The present disclosure relates to a device for conditioning industrial waste water and process water utilizing hydrodynamic cavitation in presence of magnetic field.

The present disclosure also relates to a cost effective method for conditioning industrial waste water and process water utilizing hydrodynamic cavitation in presence of magnetic field comprising the following steps:
- Flowing of industrial waste water containing high COD and high dissolved solid into local constriction of flow producing micro bubbles in the fluid and imploding the micro bubbles produce hydroxyl radical for degradation of organic substance.
- Magnetic field overcomes the high energy barrier and enhances the initiation phase of hydroxyl radical formation; thereby enhances degradation and oxidation of organic substance. On the other hand, magnetic field allows the dissolved solid to form in a suspended state; thereby reducing hardness of water.
BRIEF DESCRIPTIONS OF THE DRAWINGS
The accompanying drawings illustrate the flow chart and various embodiments of cavitation-based Industrial waste water conditioning in presence of magnetic field. More specifically, the purposes of drawings are to illustrate the preferred and alternate embodiments and are not to be construed as limitations. Furthermore, drawings are not drawn to scale.
FIG. 1 shows a flow chart illustrating the steps for cavitation-based industrial waste water conditioning in presence of magnetic field.
FIG. 2 illustrates a longitudinal cross-sectional view of device using orifice as local constriction flow element for cavitation-based industrial waste water conditioning in presence of magnetic field.
FIG. 3 illustrates a longitudinal cross-sectional view of device using venturi as local constriction flow element for cavitation-based industrial waste water conditioning in presence of magnetic field.
DETAILED DESCRIPTION OF THE INVENTION
While the disclosure is susceptible to various modifications and alternative forms, specific aspect thereof has been shown by way of example and will be described in detail below. It should be understood, however that it is not intended to limit the invention to the particular forms disclosed, but on the contrary, the invention is to cover all modifications, equivalents, and alternative falling within the spirit and the scope of the invention.

The present disclosure relates to a device and a method for conditioning industrial waste water and process water utilizing hydrodynamic cavitations in presence of magnetic field. In this method, water is introduced into water condition device which contains local flow constriction element and magnetic field generating element. Local flow constriction element such as orifice, venturi and flow nozzle produces low pressure zone in the fluid, resulting in formation of micro bubble followed by growth and collapse. Micro bubbles implode violently due to the pressure recovery and result in generation of hydroxyl radical. This hydroxyl radical oxidizes or partially oxidizes organic substances, resulting in reduction of COD. Magnetic field overcomes the high energy barrier and enhances the initiation phase of hydroxyl radical formation; thereby enhances degradation and oxidation of organic substance.
Further, magnetic field inhibits the natural scale forming tendency of CaCCh and MgCCb by temporarily altering their ionic charge identity. Instead of being attracted to one another, the molecules are caused to act like ions of similar charges and repel one another resulting in precipitate out of solution. This precipitate is a mixture of calcite, vaterite and aragonite of which aragonite is the most stable form in ambient temperature. This also help in biological control through encapsulation and electroporation. The precipitate can be physically separated through filtration and settling. Thus, magnetic field allows the dissolved solid to form in a suspended state; thereby reducing hardness of water and scale built up issue in pipes and associated equipments.
FIG. 1 is a flow chart illustrating the steps for cavitation-based industrial waste water conditioning in presence of magnetic field. This method includes, at 1A, introduction of industrial waste water into local constriction of flow along with application of static magnetic field by means of magnetic coil at IB. Local flow constriction element such as orifice, venturi and flow nozzle produces low pressure zone in the fluid resulting in formation of cavitation bubble followed by growth at 1C. Micro bubbles implode violently due to the pressure recovery and causes high temperature and pressure and result in generation of hydroxyl radical at ID. Magnetic field helps to overcome the high energy barrier and enhances the production of hydroxyl radical formation at IE. This hydroxyl radical oxidizes or partially oxidizes organic substances, resulting in reduction of COD at IF. On the other hand, magnetic field allows the dissolved solid to form in a suspended state; thereby reducing hardness of water at 1G. Process terminates and conditions the Industrial waste water at 1H.

In one aspect of the present disclosure, a device for conditioning of industrial waste water, comprising
an inlet 2A to supply industrial waste water having high COD and high
dissolved solid to a flow chamber;
a local flow constriction element 2D producing low pressure zone in the fluid
2G resulting in formation of micro bubble 2F;
a cylindrical wall 2C, wherein micro bubbles 2F implode violently at the
cylindrical wall 2C due to the pressure recovery and causes high temperature
and pressure, resulting in generation of hydroxyl radicals;
a magnetic element 2E, wherein magnetic field helps to overcome the high
energy barrier and enhances the production of hydroxyl radical formation and
allows the dissolved solid to form in a suspended state; thereby reducing
hardness of water, biological growth and scale build up;
a discharge 2B, wherein the hydroxyl radical oxidizes or partially oxidizes
organic substances, resulting in reduction of chemical oxygen demand (COD);
wherein the cylindrical wall 2C, the orifice plate 2D and the magnetic element 2E, forms the flow chamber.
In another aspect of the present disclosure, wherein the local flow constriction element 2D comprises of orifice or venturi or flow nozzle.
In yet another aspect of the present disclosure, wherein industrial waste water is sent to the flow chamber with a velocity sufficient to generate hydrodynamic cavitations.
In yet another aspect of the present disclosure, wherein the orifice plate 2D is constructed in such a way that there is a converging part at inlet and a diverging part at discharge.
In yet another aspect of the present disclosure, wherein the converging part at inlet creates pressure drop sufficient to generate hydrodynamic cavitations.
In yet another aspect of the present disclosure, wherein the diverging part at discharge of orifice helps to recover the pressure of the system.
In yet another aspect of the present disclosure, wherein the local constriction element creates hydraulic resistance and causes hydrodynamic cavitations.

In yet another aspect of the present disclosure, wherein magnetic field is created by means of permanent magnet or magnetic coil.
In yet another aspect of the present disclosure, wherein the dissolved solid includes calcium and magnesium salts.
FIG. 2 illustrates a longitudinal cross-sectional view of device using orifice as local constriction flow element for cavitation-based industrial waste water conditioning in presence of magnetic field.
In this embodiment, the device comprises of cylindrical wall 2C along with orifice plate 2D and magnetic coil 2E, forms flow chamber. Orifice plate 2D is constructed in such a way that there is converging part at inlet and diverging part at discharge. In operation of device illustrated in FIG.2, industrial waste water is sent to the flow chamber via inlet 2A with a velocity sufficient to generate hydrodynamic cavitations. Orifice plate 2D acts as Local flow constriction element produces low pressure zone in the fluid 2G resulting in formation of micro bubble 2F followed by growth. The converging part at inlet creates pressure drop sufficient to generate hydrodynamic cavitations, on the other hand, diverging part at discharge of orifice helps to recover the pressure of the system. The micro bubbles 2F implode violently at wall 2C due to the pressure recovery and causes high temperature and pressure and result in generation of hydroxyl radical. Magnetic field helps to overcome the high energy barrier and enhances the production of hydroxyl radical formation by means of magnetic coil 2E. This hydroxyl radical oxidizes or partially oxidizes organic substances, resulting in reduction of COD at discharge 2B. On the other hand, magnetic field allows the dissolved solid to form in a suspended state; thereby reducing hardness of water.
FIG. 3 illustrates a longitudinal cross-sectional view of device using venturi as local constriction flow element for cavitati on-based industrial waste water conditioning in presence of magnetic field.
In this embodiment, the device comprises of venturi and magnetic coil 3E, forms flow chamber. Venturi forms converging part 3D at inlet and diverging part 3G at discharge. In operation of device illustrated in FIG.3, industrial waste water is sent to the flow chamber via inlet 3A with a velocity sufficient to generate hydrodynamic cavitations. Venturi acts as Local flow constriction element produces low pressure zone in the fluid 3H resulting in formation of micro bubble 3F followed by growth. The converging part at inlet creates

pressure drop and velocity sufficient to generate hydrodynamic cavitations; on the other hand, diverging part at discharge helps to recover the pressure of the system. The micro bubbles 3F implode violently at wall 3C due to the pressure recovery and causes high temperature and pressure and result in generation of hydroxyl radical. Magnetic field helps to overcome the high energy barrier and enhances the production of hydroxyl radical formation by means of magnetic coil 3E. This hydroxyl radical oxidizes or partially oxidizes organic substances, resulting in reduction of COD at discharge 3B. On the other hand, magnetic field allows the dissolved solid to form in a suspended state; thereby reducing hardness of water.
In yet another aspect of the present disclosure, orifice is designed in a variety of shapes to vary the extent and nature of cavitation in flow chamber. The shape of orifice such as circular, triangular or any other shape affects the nature of cavitations.
In yet another aspect of the present disclosure, orifice is designed in a variety of configuration to vary the extent and nature of cavitations in flow chamber. Multiple orifice on single plate and their orientation affects the nature of cavitations.
In yet another aspect of the present disclosure, hydraulic resistance is created by means of flow nozzle and causes hydrodynamic cavitations.
The present disclosure also relates to a method for conditioning industrial waste water, comprising steps of:
supplying industrial waste water having high COD and high dissolved solid into
a local constriction of flow element (2D);
applying static magnetic field by means of magnetic element (2E); wherein the
local flow constriction element (2D) produces low pressure zone in the fluid
resulting in formation of micro bubbles (2F);
generating a hydroxyl radical, wherein micro bubbles (2F) implode violently
due to the pressure recovery and causes high temperature and pressure;
enhancing production of the hydroxyl radical formation; wherein magnetic
element (2E) overcomes the high energy barrier and allows the dissolved solid
to form in a suspended state; thereby reducing hardness of water, biological
growth and scale build up;
oxidizing or partially oxidizing organic substances by the hydroxyl radical
resulting in reduction of chemical oxygen demand (COD).

ADVANTAGES
The device and method of the present invention for conditioning industrial waste water provide following advantages:
• The device reduces chemical oxygen demand (COD) mechanically without utilizing external oxidizing agent.
• The device enhances degradation and oxidation of organic substance by virtue of hydrodynamic cavitations in presence of magnetic field; thereby enhances the reduction of COD.
• Magnetic field allows the dissolved solid to form in a suspended state; thereby reducing hardness of water.
• The device controls and reduces the scale build up, biological growth in pipes and associated equipments.
While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope and spirit being indicated by the description.

WE CLAIM:

1. A device for conditioning of industrial waste water, comprising
an inlet 2A to supply industrial waste water having high COD and high
dissolved solid to a flow chamber;
a local flow constriction element 2D producing low pressure zone in the fluid
2G resulting in formation of micro bubble 2F;
a cylindrical wall 2C, wherein micro bubbles 2F implode violently at the
cylindrical wall 2C due to the pressure recovery and causes high temperature
and pressure, resulting in generation of hydroxyl radicals;
a magnetic element 2E, wherein magnetic field helps to overcome the high
energy barrier and enhances the production of hydroxyl radical formation and
allows the dissolved solid to form in a suspended state; thereby reducing
hardness of water, biological growth and scale build up;
a discharge 2B, wherein the hydroxyl radical oxidizes or partially oxidizes
organic substances, resulting in reduction of chemical oxygen demand (COD);
wherein the cylindrical wall 2C, the orifice plate 2D and the magnetic element 2E, forms the flow chamber.
2. The device as claimed in claim 1, wherein the local flow constriction element 2D
comprises of orifice or venturi or flow nozzle.
3. The device as claimed in claim 2, wherein the orifice plate is constructed in such a
way that there is a converging part at inlet and a diverging part at discharge.
4. The device as claimed in claim 1, wherein industrial waste water is sent to the flow chamber with a velocity sufficient to generate hydrodynamic cavitations.
5. The device as claimed in claim 4, wherein the converging part at inlet creates pressure drop sufficient to generate hydrodynamic cavitations.
6. The device as claimed in claim 4, wherein the diverging part at discharge of orifice helps to recover the pressure of the system.
7. The device as claimed in claim 1, wherein circular, triangular or any other shape affect
the nature of cavitations.

8. The device as claimed in claim 1, wherein orifice is designed in a variety of configuration
such as multiple orifice on single plate and their orientation to vary the extent and nature of
cavitations in flow chamber.
9. The device as claimed in claim 1, wherein the local constriction element creates hydraulic resistance and causes hydrodynamic cavitations.
10. The device as claimed in claim 1, wherein magnetic field is created by means of permanent magnet or magnetic coil.
11. The device as claimed in claim 1, wherein the dissolved solid includes calcium and magnesium salts.
12. A method for conditioning industrial waste water, comprising steps of:
supplying industrial waste water having high COD and high dissolved solid into
a local constriction of flow element (2D);
applying static magnetic field by means of magnetic element (2E); wherein the
local flow constriction element (2D) produces low pressure zone in the fluid
resulting in formation of micro bubbles (2F);
generating a hydroxyl radical, wherein micro bubbles (2F) implode violently
due to the pressure recovery and causes high temperature and pressure;
enhancing production of the hydroxyl radical formation; wherein magnetic
element (2E) overcomes the high energy barrier and allows the dissolved solid
to form in a suspended state; thereby reducing hardness of water, biological
growth and scale build up;
oxidizing or partially oxidizing organic substances by the hydroxyl radical
resulting in reduction of chemical oxygen demand (COD).