High-Gravity Ammonia Removal-Zhejiang Xinchuangxing Technology Co.,Ltd.

High-Gravity Ammonia Removal

High-gravity ammonia removal operates by generating intense centrifugal forces through high-speed rotation. This process disperses liquid into ultra-thin films or micro-droplets, significantly enhancing gas-liquid contact area and mass transfer rates. It efficiently treats dilute ammonia solutions (1-5% concentration) or ammonia-containing wastewater, reducing residual ammonia content to ≤0.05% while simultaneously recovering concentrated ammonia water (15-20%) and gaseous ammonia as valuable byproducts. The technology achieves efficient ammonia separation through synergistic mechanisms: heating promotes ammonia desorption, vacuum operation alters the relative volatility of ammonia/water, and countercurrent gas flow strips ammonia within the high-gravity field. These integrated approaches enable highly effective ammonia removal from dilute solutions.

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Technical Parameters

High-Gravity Ammonia Removal vs. Conventional Ammonia Removal Technologies

Parameter	High-Gravity Ammonia Removal	Conventional Ammonia Removal (Packed/Stripping Towers)
Mass Transfer Efficiency	Extremely High	Low (dependent on packing type and column height)
Equipment Height	≈1m (compact)	10-20m (tall structure)
Energy Consumption	Low (30%-50% energy saving)	High (requires significant air/steam)
Residence Time	Millisecond-level	Minute-level
Applicable Concentration Range	Low concentrations	High concentrations

Flow Diagram:

Typical process flow

(1) High-Gravity Stripping Deammonification (for Wastewater Treatment)
1. Adjust pH: Add alkali (such as NaOH) to raise the pH of wastewater to 10~11, so that NH₄⁺ is converted into free NH₃.
2. High-gravity stripping: Wastewater and air are in countercurrent contact in the RZB, and NH₃ is stripped to the gas phase.
3. Ammonia recovery: Gaseous NH₃ can be recovered by acid absorption (such as H₂SO₄→ (NH₄)₂SO₄ fertilizer) or condensation.
(2) High-Gravity Absorption Deammonification (for Waste Gas Treatment)
1. Waste gas pretreatment: After dust removal and cooling, enter the RZB.
2. Acid absorption liquid: Use dilute sulfuric acid or phosphoric acid solution to absorb NH₃ in countercurrent.
3. Purified gas emission: The tail gas that meets the standard is discharged, and the ammonia-rich liquid is further treated (such as evaporation and crystallization).

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