Method and device for evaporate/reverse osmosis concentrate and other liquid solidification
View Patent ↗A Method and Device for solidification of waste liquids and fluids is disclosed, which is particularly well suited to processing radioactive waste fluids. Set forth is a receiving unit or subassembly for housing solidification agent, and one or more manifold units or subassemblies positioned within the receiving unit for providing waste fluid. The subassemblies operate in relation to each other to provide, position and mix solidification agent or polymer with waste fluid so that a dirt-like polymerized waste product is produced and positioned in the container for removal or later safe shipment or storage. Mathematical relationships, in preferred embodiments or aspects are utilized in determining number and sizing of manifold openings, and pressure of waste to be provided, to meet the requirements of waste fluids to be transported through these openings into the receiving unit.
1. A method for mixing polymer and waste materials for solidification, comprising the steps of:
positioning a polymer fluid within a container at, at least one preselected level during a cycle of time;
deploying or installing at least one distribution manifold system, communicating with the supply of waste fluid and defining a plurality of openings, at a first position within said container proximate positionally to the at least one preselected level of polymer,
supplying the waste materials through said openings for admixture and combination of the waste materials with at least a portion of the polymer fluid in said container.
2. The method of claim 1 , further comprising the step of dimensioning the openings in the manifold in accordance with the waste materials to be supplied and the pressure under which the waste material is to be supplied.
3. The method of claim 2 , wherein, the size and dimension of each of said openings is determined in accordance with the formula:
r =( w/K π(2 g c ( p 1 −p 2 )ρ) 0.5 ) 0.5 ,
where:
r=radius (ft.) of each of the openings,
w=mass of waste per opening or mass flow rate per opening (lb/sec),
K=constant (K=C/1−β 4 ) 0.5 ), and where K (for water) has a value of about 0.62 for Reynolds Numbers greater than (>) 1,000,
β=diameter of the opening divided by the diameter of the at least one outlet arm member (ft),
g c =gravitational constant (32.17 ft/sec 2 ),
p 1 =pressure inside the manifold system (lbs/ft 2 ),
p 2 =pressure outside the manifold system (lbs/ft 2 ),
ρ=density of waste (lbs/ft 3 ), and
C=coefficient of discharge based on Reynolds number (dimensionless) and is a function of β.
4. The method of claim 3 , wherein, p 1 (the pressure inside the manifold system), to be utilized in said method, is determined, when the radius of each of the openings (r) and the mass flow rate (w) are known, in accordance with the formula:
p 1 ={( w/Kπr 2 ) 2 /2 g c ρ}−p 2 .
5. The method of claims 2 , wherein, the number of holes to be utilized, or required, in the at least one distribution manifold system is determined in accordance with the formulas:
w=Kr 2 π(2 g c ρ( p 1 −p 2 )) 0.5 and
N=W/w,
where:
W=total flow rate (gpm or lb/sec), and
N=the number of holes to be utilized, or required.
6. The method of claims 4 , wherein, the number of holes to be utilized, or required, in the at least one distribution manifold system is determined in accordance with the formulas:
w=Kr 2 π(2 g c ρ( p 1 −p 2 )) 0.5 and
N=W/w,
where:
W=total flow rate (gpm or lb/sec), and
N=the number of holes to be utilized, or required.
7. The method of claim 1 , wherein said method further comprises the step of positionally pivoting the at least one distribution manifold system from the first position to a second position within the container, contemporaneous with the addition of a further level of polymer fluid and supply of further waste materials through the openings of the manifold.
8. The method of claim 2 , further comprising the step of blowing the openings clear with air or other pressurized or cleaning fluid at the completion of the waste fluid delivery by the at least one distribution manifold.
9. The method of claim 1 , wherein additional levels of polymer fluid are added to the container.
10. The method of claim 1 , wherein a plurality of manifold systems are deployed or installed in the container proximate to anticipated positions of respective polymer levels.
11. A method for mixing a polymer and a waste material to produce a solid product, polymerized and dirt-like in nature, for safe disposal; said method comprising the steps of meterably mixing and flowably positioning the polymer and the waste material in relation to a container.
12. The method of claim 11 , further comprising the step of:
metering a polymer volume and a waste fluid volume in relation to each other along an angled surface prior to their positioning in the container, such that the polymer volume makes contact and mixes with the waste fluid volume in a flowable and moving manner prior to the polymer volume and the waste fluid volume entering, and final solidifying within, the container.
13. The method of claim 12 , wherein: the step of metering a polymer volume and a waste fluid volume in relation to each other, comprises supplying within a range of from about 1% to about 20% of polymer by weight.
14. The method of claim 12 , wherein: the step of metering a polymer volume and a waste fluid volume in relation to each other, comprises supplying within a range of from about 2% to about 5% of polymer by weight.
15. The method of claim 12 , wherein: the step of metering a polymer volume and a waste fluid volume in relation to each other, comprises supplying within a range of from about 2% to about 20% of polymer by volume.
16. The method of claim 12 , wherein the polymer is chosen from a group consisting of poly(maleic anhydride), polyvinyl alcohol, poly (ethylene oxide), poly (hydroxymethylene), polyacrylamide, polyacrylate, starch-g-poly(acrylonitrile), ionic polysaccharides, and guar gum.
17. The method of claim 12 , wherein: the angled surface being a trough member onto which the polymer volume and the waste fluid volume are supplied.
18. The method of claim 12 , wherein: the angled surface having a triangularly surfaced area onto which the polymer volume and the waste fluid volume are supplied.
19. The method of claim 12 , wherein: the angled surface having an arcuate surface onto which the polymer volume and the waste fluid volume are supplied.
20. The method of claim 12 , wherein: the angled surface defining a channel therewithin.
21. The method of claim 17 , further comprising the step while along the trough member of further directing and mixing the polymer volume and the waste fluid volume therewithin.
22. The method of claim 12 , further comprising the step of forming a gelation on, and proximal to, the angled surface.
23. The method of claim 12 , further comprising the step of supplying the polymer volume through a meterable flow control valve.
24. The method of claim 23 , further comprising the step of supplying the waste fluid through a meterable flow control valve.
25. The method of claim 12 , further comprising the step of supplying the polymer volume through a polymer nozzle.
26. The method of claim 25 , further comprising the step of supplying the waste fluid through a waste nozzle.
27. The method of claim 12 , further comprising: mechanical mixing of the polymer and the waste material prior to positioning in the container.
28. The method of claim 12 , further comprising mixing the polymer and the waste material in the container.
29. The method of claim 28 , wherein the mixing and flowably positioning further comprise placing a polymer or solidification agent into the container, and flowably passing an aqueous waste fluid through the container, to initiate polymerization and substantially complete solidification therewithin.
30. The method of claim 29 , wherein the aqueous waste fluid comprises water and a small quantity of particulate solids.
31. The method of claim 30 , wherein the aqueous waste fluid being a primary side ion exchange resin sluice water from a PWR nuclear plant.
32. The method of claim 28 , further comprising: vortically mixing the polymer and the waste material in the container.
33. The method of claim 12 , wherein prior to metering a polymer volume and a waste fluid volume, the step of supplying the angled surface dimensioned in accordance with the equation,
L (Max)= t (gel)× v /3,
where,
L(Max) equals the length of the angled surface
t(gel) equals time to gelation upon addition of polymer agent in seconds, and
v equals velocity of liquid in and on the angled surface, in ft/sec.
34. The method of claim 12 , wherein, as a part of the metering step: supplying the polymer, through a means for catching and directing the polymer, in a downward flow toward the angled surface.
35. The method of claim 34 wherein:
the angled surface being a waste trough through which the waste material is provided, and onto which the polymer is directed; and
the means for catching and directing the polymer having a funneled portion and a polymer chute portion.
36. The method of claim 35 , wherein as a part of the step of supplying the polymer, further including the step of passing the polymer through a metering valve.
37. The method of claim 36 , wherein the metering valve is generally positioned between the funneled portion and the polymer chute portion.
38. The method of claim 37 , wherein: the metering valve being a slide valve.
39. The method of claim 37 , further comprising the step of cross- sectionally dimensioning the polymer chute portion in relation to the waste trough in accordance with the equation:
a/A≅b/B≅c/C,
where:
“a” equals the first cross-sectional lateral dimensional magnitude of the polymer chute portion,
“b” equals the center cross-sectional dimensional magnitude of the polymer chute portion, and
“c” equals the second cross-sectional lateral dimensional magnitude, opposite and opposing the first cross-section lateral dimensional magnitude, of the polymer chute portion; and
“A” equals the first cross-sectional lateral dimensional magnitude of the waste trough,
“B” equals the center cross-sectional dimensional magnitude of the waste trough, and
“C” equals the second cross-sectional lateral dimensional magnitude, opposite and opposing the first cross-section lateral dimensional magnitude of the waste trough.