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- Protein Skimming is accomplished
by injecting (with a venturi injector) "Micro-Fine" air bubbles into the water stream as it enters the contact reactor.
- The "Water-Air" mixture is held inside of the contact reactor for a predetermined retention time (60-120 seconds). During this retention time, the fine air bubbles are given the chance to accumulate dissolved organic wastes and tiny particles on their bubble walls.
- The many "Micro-Fine" air bubbles,
laden with organic waste, eventually
rise to the top of the contact reactor where a dense foam collimates.
- Once the foam accumulates at the top
of the reactor, it begins to slowly, but continuously, climb upward through
the foam collimation tube where it
works its way out of the reactor and
into the waste collector. When foam
exits the reactor, the protein skimming process is complete.
- Note: Waste effluent will vary from a light colored, yellowish liquid to a dark green. A dark color effluent has less water content, representing a more concentrated waste. Lowering the water level inside the reactor and increasing the foam collimation time will produce a more concentrated waste effluent.
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Note: Waste effluent will vary from a light colored, yellowish liquid to a dark green. A dark color effluent has less water content, representing a more concentrated waste. Lowering the water level inside the reactor and increasing the foam collimation time will produce a more concentrated waste effluent.
Protein Skimming in Freshwater with Ozone
The benefits of protein skimming are well known. No other form of filtration removes dissolved organic wastes (fats/phenols) while at the same time re-oxygenates the water. In the past, the protein skimming process was thought to be only possible in heavier saltwater, as opposed to freshwater; however, this is a misconception. Protein skimming is well-suited for freshwater applications.
Protein Skimming, used with a smaller freshwater home aquarium, is probably impractical. However, when applied to commercial recirculating systems, the benefits are quite extraordinary. For example, consider the waste production of a single 10,000 gallon tilapia recirculation system without the use of protein skimming. The resulting color of the water would most likely be orange since enormous amounts of both solid and dissolved organic waste are constantly being produced. Contrast this to systems using properly sized protein skimmers where the water would be substantially clearer.
Removing solid waste is easily accomplished with separators and screens, but fine solids and dissolved organic material are different. On a large scale installation, there are essentially two choices: either large water changes (to dilute) or protein skimming (to remove).
Combining a small amount of ozone with protein skimming enhances its performance in freshwater by oxidizing the available organic contaminants. This ultimately enhances flocculation and absorption onto the bubble wall.
When considering the use of ozone, be certain that the air (preferably pure oxygen) that is used to feed the ozone generator is dry and clean. The feed gas to the ozone generator ultimately establishes the efficiency and operating life of the equipment. Managing ozone dosing can be achieved by implementing an ORP (Oxygen Reduction Potential) Meter.
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Delzone Corona Discharge Ozone Generators
Features include 20 kHz frequency, ceramic tube dielectric
ozone generator cells for consistent, reliable ozone production. Delzone models CD-2 to CD-45 feature configurable feed gas options, multiple safety features and sturdy reliable construction.
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AquaFoam PVC Series Advantages:
1. Our exclusive "Dual-Venturi Air Injection Manifold” allows precise air/ozone injection adjustments. This dual venturi injector arrangement allows one injector to be adjusted to the ozone equipment’s precise requirements while the other injector operates independently.
2. The inlet’s pressure gauge allows for precise adjustments between the venturi injectors and the manifold’s raw water feed to the contact vessel.
3. The waste collector can be easily disassembled for periodic cleaning, if required, and is constructed of durable PVC.
4. Connect our waste collector’s wash-down nozzle to a pressurized fresh water source to remove solids that will accumulate on the foam collimating tubes inside the waste collector.
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5. The outlet port’s valve controls the column height inside the reactor vessel during operation. An outlet stand-pipe can be added to ensure a precise water level.
6. The Opaque Heavy-Wall PVC construction eliminates algae growth inside the vessel while increasing durability and longevity. The PVC body’s durability also lends itself to resistance from shipping damage.
Note: Easy to assemble, disassemble, and operate.
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AquaFoam Poly Series Advantages:
1. Water flowing through the contact vessel is recirculated by the “Dual Venturi Air Injection Manifold”. This dual venturi injector arrangement allows for independent, precise injector adjustments that are critical especially with the use of ozone.
2. Our inlet pressure gauge, critical to operating efficiency, identifies the pressure before the venturi injectors.
3. The venturi injector manifold’s pump supplies water to the venturi manifold and waste collector wash-down nozzle.
4. The outlet port’s valve controls the column height inside the reactor vessel during operation. An outlet stand-pipe can be added to ensure a precise water level.
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5. The waste collector can be easily disassembled for periodic cleaning, if required, and is constructed of durable PVC.
6. Connect our waste collector’s wash-down nozzle to a pressurized fresh water source to remove solids that will accumulate on the foam collimating tubes inside the waste collector. Cleaning can be automated with our timer initiated solenoid valve.
7. Durable polyethylene construction increases longevity and virtually eliminates the possibility of shipping damage to the contact vessel.
Note: Easy to assemble, disassemble, and operate.
Dual Venturi Air Injection
Our dual venturi injection manifold allows ozone injection through a dedicated venturi injector without disturbing the main air venturi injector. Using a dedicated injector will maximize ozone solubility, because it allows for precise air/oxygen adjustments through the ozone generator.
Protein Skimming / Foam Fractionation Applications:
Brood Stock/Grow-Out – Whether your application is fresh or saltwater, protein skimming offers tremendous benefits like increased dissolved oxygen levels in high bio density recirculating systems. Retail Tropical Fish Holding Systems – Saltwater retail fish holding systems require a constant high water quality level. Protein Skimming separates dissolved wastes before they mineralize, in turn reducing the load on the biofilter. Exhibits – Fish, reptile and mammal exhibits can benefit from protein skimming with improved water clarity.
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Custom Skimmers / Fractionators to Your Specifications:
Emperor Aquatics, Inc. is proficient with equipment customization for specific and unique applications. Whether your requirements are integrated ozone injections with controls, specific port sizes, specific vessel dimensions or unique injector requirements, we welcome your special requests.
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AquaFoam (PVC) Protein Skimmer Specifications
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Model # |
Dimensions
Dia x Height |
Venturi Style/
Inlet Port Size |
Outlet Style/
Port Size |
Water Flow
Rate
1.5 Min
Dwell Time |
Venturi
Manifold
Pump
(optional) |
| COM3006 |
7" x 94" |
Dual / 1" |
Base / 1.5" |
11 GPM |
340036 |
| COM3008 |
9" x 96" |
Dual / 1.5" |
Base / 1.5" |
22 GPM |
340036 |
| COM3010 |
11" x 120" |
Dual / 1.5" |
Base / 2" |
34 GPM |
340038 |
| COM3012 |
13" x 120" |
Dual / 2" |
Base / 2" |
55 GPM |
340039 |
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AquaFoam (Polyethylene)) Protein Skimmer
Specifications
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| Model
# |
Dimensions
Diam. x Height |
Venturi
Style/
Inlet Port Size |
Outlet
Style/
Port Size |
Water
Flow
Rate
1.5 Min
Dwell Time |
Venturi
Manifold
Pump |
| COM3020-NP |
20"
x 75" |
Single
/ 1.5" |
S.P.
/ 2" |
50
GPM |
Option* |
| COM3020 |
20"
x 80 " |
Single
/ 1.5" |
S.P.
/ 2" |
50
GPM |
340036 |
| COM3024 |
24"
x 105" |
Dual
/ 2" |
S.P.
/ 3" |
80
GPM |
340036 |
| COM3028-2005 |
28"
x 110" |
Dual
/ 2" |
S.P.
/ 3" |
115
GPM |
340036 |
| COM3031 |
31"
x 130" |
Dual
/ 3" |
S.P.
/ 4" |
175
GPM |
340036 |
| COM3036 |
36"
x 130" |
Dual
/ 3" |
S.P.
/ 4" |
225
GPM |
340037 |
| COM3045 |
45"
x 105" |
Dual
/ 4" |
S.P.
/ 6" |
285
GPM |
340038 |
| COM3046 |
46"
x 170" |
Dual
/ 4" |
S.P.
/ 6" |
570
GPM |
340038 |
*COM3020-NP does
not include venturi manifold pump or auto-washdown valve.
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