OHR MIXER
DAF / Micro-nano bubbles / Emulsification / Uniform dispersion / Ozone treatment / Neutralization & pH control / Others
OHR AERATOR
Air diffuser for wastewater treatment / Prevention of sludge accumulation / VOC removal, Degassing / Gas-Liquid reaction
Disadvantages and limitations of conventional technologies : |
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Inside the pressure tank it is difficult to keep the optimal pressure, so operator has to make daily pressure adjustments. Regular pressure tank replacement is also necessary. |
No pressure tank is used at all. Operation adjustment is needed only once during the first time. No additional adjustments necessary and optimal conditions are always maintained. |
High pressure water pump and high pressure air are necessary. | The pressure of injection air is very low at 0.1MPa. The pump uses the same electric power as a normal water pump. |
They only generate low quality microbubbles which have low ability to separate SS, so it is necessary to add a large amount of flocculants. |
High quality microbubbles can be generated so flocculants are normally reduced by 20 to 30% (*up to 50% in some cases) compared with the conventional DAF systems. |
Many conventional units are necessary for large scale wastewater treatment plants causing complications and extra expense. |
One OHR MIXER and one pump generate up to 15,000L/min of microbubbled water. Minimum pump power and the simplest piping configuration. |
Disadvantages and limitations of conventional technologies : |
OHR Technology : |
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Most technologies can only generate very small amounts of microbubbled water for laboratory tests or small plants. |
From small amounts (10L/min) to very large amounts (15,000L/min) of microbubbled water can be generated with one OHR MIXER. It can be used in many situations from laboratory-scale to large-scale. |
Conventional technologies can generate micro-nano bubbles from only a few kinds of gas. Also microbubbles can not be made in pure water. |
All type of gas / liquid can be broken down into micro-nano size particles. |
The equipment is complicated and uses a pressure tank or a high pressure pump. Some technologies can only generate microbubbles in a water filled container. |
With only the OHR MIXER and pump, micro-nano bubbles can be generated consistently. |
Most equipment can only generate one kind of bubble such as microbubbles or nanobubbles. |
Three kinds of bubbles microbubbles / nano-bubbles / coarse-bubbles can be made by a simple valve operation. |
Relies on pressure difference only to generate micro-nano bubbles, there is no function to actively mix and react the gas and liquid. |
Inside the OHR MIXER, micro-nano bubble generation and gas-liquid mixing / reaction takes place simultaneously. Therefore, the OHR MIXER can replace conventional reaction equipment. |
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Disadvantages and limitations of conventional technologies : |
OHR Technology : |
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To emulsify without adding emulsifier (chemical), very high pressure is necessary. |
In the case of light oil and water emulsification, it can be emulsified with one-pass without adding an emulsifier at a pump pressure of only 0.3MPa. |
Large size, complicated and expensive emulsification equipment is necessary. |
One OHR MIXER + one pump replaces high pressure emulsification equipment. |
Regular specialist maintenance and parts replacement are required. Therefore, impractical in rural areas. |
The OHR MIXER has no moving and replacement parts. So completely maintenance free. |
A lot of emulsification equipment is needed when making a large amount of emulsified liquid because treatment capacity per unit is small. |
One OHR MIXER + one pump can treat up to 15,000L/min. |
Disadvantages and limitations of conventional technologies : |
OHR Technology : |
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Continue mixing by rotating the impellers in a large tank until uniform dispersion is completed. |
Instantaneously disperses uniformly with one pass. Just pass A fluid and B fluid through the OHR MIXER. |
Mixing over a long period of time with large, complicated and expensive equipment. |
By using OHR MIXER and a pump, uniform mixing is completed in one pass. |
Periodic disassembling and cleaning requires a lot of time and labor because there are many components. |
The OHR MIXER has a self-cleaning function. So in most cases disassembling and cleaning is unnecessary, and washing is completed by passing the washing solution through the OHR MIXER. |
Disadvantages and limitations of conventional technologies : |
OHR Technology : |
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Adjust the pH by rotating the impellers in a large tank. However there are rapid-wide pH fluctuations between acidic and alkaline regions due to inadequate mixing. It’s very difficult to adjust the pH as needed. |
The liquid and the pH adjusting agents are completely and uniformly mixed in the OHR MIXER, so rapid-wide pH fluctuations due to inadequate mixing can be minimized. |
The pH of the liquid in the tank is uneven due to poor mixing between the liquid and the pH adjusting agents, repeatedly adding pH adjusting agents is necessary based on the unstable pH value. So much time and chemicals are wasted. |
The injected pH adjusting agent is uniformly mixed at the moment of passing through the OHR MIXER, so the agent is not wasted. |
Disadvantages and limitations of conventional technologies : |
OHR Technology : |
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When the porous air diffusers or agitators are used, they can’t generate strong water flow that is sufficient to prevent sludge accumulation in the tank. So sludge accumulates inevitably on the tank bottom. |
A powerful suction force is created inside the OHR AERATOR due to powerful spiral flows generated by “guide vane” in the OHR AERATOR. So even heavy substances rise easily. |
Disadvantages and limitations of conventional technologies : |
OHR Technology : |
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Bubbling using submerged mechanical aerators or porous air diffusers is the most common method. Excessive air and electricity costs are necessary because these aerators have low efficiency. Hard to remove substances can not be removed. |
VOC and dissolved gas are removed out from liquid by the powerful gas-liquid mixing function of the OHR AERATOR. Therefore, its removal efficiency is much higher than submerged mechanical aerators which look powerful but actually are not. (*You can also use the OHR MIXER for inline processing.) |
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Disadvantages and limitations of conventional technologies : |
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A common gas-liquid reaction method is to discharge gas from the bottom of a bubble column reactor (vertical tank), and liquid flows from top to bottom in the opposite direction and make contact. However, simply blowing gas in a tank is very inefficient because most of discharged gas is released outside the tank without contacting/reacting the liquid. |
Inside the OHR AERATOR, gas and liquid are powerfully mixed by two special structures. Therefore, the OHR AERATOR’s efficiency is far superior to simple bubbling. (*You can also use the OHR MIXER for inline processing.) |
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