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Tower Internals

  • Absorption and adsorption technology
  • Concentration, acid, distillation technology

Tower Internals

Solvent Recovery and Refining System

  • Absorption and adsorption technology

Solvent Recovery and Refining System

Temperature Swing Adsorption type Solvent recovery

Features

・Solvent absorption equipment using granular activated carbon.
・Absorbed solvent is desorbed in the tank under lower pressure, which saves energy and maintains solvent quality.
・A steam recovery system with enhanced heat recovery system can be provided as well.

Kiln Gasification System

  • Combustion and melting technology

Kiln Gasification System

Features

・The special sealing configuration if the kiln reduces air leakage from the sliding section to very low levels, maintaining furnace temperature below that for clinker generation even with large changes in the heating value of waste material, and allowing energy-saving operation.
・A prong equipped at the forward end of the kiln stirs waste materials, improving agitation.
・A nozzle installed in the secondary combustion chamber allows waste liquid treatment.

Catalytic WAO Effluent Water Treatment System

  • Reaction and reforming technology

Catalytic WAO Effluent Water Treatment System

Features

・Combustion is not applied, requiring no fuel, and exhaust gas does not include NOx, SOx, and dioxins.
・No secondary waste such as excess sludge as in biotreatment is generated. The system is applied to wastewater that is difficult to handle through biotreatment.

Biotreatment System/Anaerobic Treatment

  • Reaction and reforming technology

Biotreatment System/Anaerobic Treatment

Features

High load and high efficiency
?Organic volumetric loading rate: 50 to 80 kg/m??D
?Organic removal rate: 95% (based on tests with artificial glucose water)

Greatly reduces aerobic biotreatment (activated sludge) volume and eliminates activated-sludge bulking at subsequent stage.
(This system is produced by Tsukishima Kikai Co., Ltd.)

Biotreatment System/Aerobic Treatment

  • Reaction and reforming technology

Biotreatment System/Aerobic Treatment

Features

・Effectively reduces organic CODs as pretreatment for activated sludge.
・Reduces the treatment volume of activated sludge and excess sludge generated at the subsequent stage.
(This system is produced by Tsukishima Kikai Co., Ltd.)

BMB Stripper

  • Absorption and adsorption technology

BMB Stripper

Distillation effectively removes low level of VOCs in water, but large amount of steam energy is required. With the BMB stripper, steam energy consumption can be reduced by bringing the gas flow closer to the plug flow.
VOCs in water are removed by conventional aeration by releasing them into the air to prevent water contamination. Distillation method is effective for removing small levels of VOCs in water. However, large amounts of steam and energy are required for conventional methods because reducing the amount of steam causes the downward liquid to mix with the upward steam flow, so concentration becomes vertically uniform to the tower, disabling direction control/countercurrent flow of liquid and gas.
However with the BMB stripper, the gas flows closer to the plug flow, which maintains the vertical concentration difference. The liquid flows down in the tower as it contacts with gas and concentration of organic compounds decreases gradually to less than the permissible level, then discharged from the base of the tower. As steam flows upward, concentration of organic compounds increases, allowing for their recovery and reuse. Use of little steam allows increasing the concentration of organic compounds, so solvent phase and aqueous phase can be separated efficiently with a decanter.

Ammonia Separation and Recovery Process

  • Concentration, acid, distillation technology

Ammonia Separation and Recovery Process

Ammonia in wastewater is nitrified in the water environment by microorganisms and changes into nitrate-nitrogen or nitrite-nitrogen that adversely affects human beings.
In 2004, the 5th Water Quality Immutable Weight Control was enforced, which started control on nitrogen and phosphorus as substances for eutrophication. The control will be stricter year by year.
We have marketed high-performance packing for many years, and based on our expertise of packing, we have developed and marketed distillation separation equipment. Moreover, to decompose and treat separated ammonia, we provide separation recovery equipment and separation decomposition equipment, incorporating the catalyst technology of Nippon Shokubai.
 
Ammonia gas separated by the stripper is condensed, and then recovered as ammonia liquid. Moreover, it is possible to produce ammonium sulfate, ammonium chloride, or ammonium bicarbonate.

Ammonia Separation and Decomposition Process

  • Combustion and melting technology
  • Concentration, acid, distillation technology

Ammonia Separation and Decomposition Process

Ammonia in wastewater is nitrified in the water environment by microorganisms and changes into nitrate-nitrogen or nitrite-nitrogen that adversely affects human beings.
In 2004, the 5th Water Quality Immutable Weight Control was enforced, which started control on nitrogen and phosphorus as substances for eutrophication. The control will be stricter year by year.
We have marketed high-performance packing for many years, and based on our expertise of packing, we have developed and marketed distillation separation equipment. Moreover, to decompose and treat separated ammonia, we provide separation recovery equipment and separation decomposition equipment, incorporating the catalyst technology of Nippon Shokubai.
 
The temperature of ammonia gas, separated from the stripper by air diffusion, is increased up to a specified temperature for oxidative decomposition with a catalytic reactor. Heat after oxidative decomposition is used for air diffusion, which reduces running cost.

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