Knowledgebase_Sci-Nano

新闻资讯

NEWS CENTER

Blog

Experiment report

Frequently Asked Questions

Knowledgebase

Blog

Experiment report

Frequently Asked Questions

Mar 31,2025

Why more and more customers using the air stripping methods are switching to membrane ammonia removal technology

More and more customers who previously used the air stripping method for ammonia-nitrogen wastewater treatment are switching to membrane-based ammonia removal technology. This is mainly because membrane-based ammonia removal offers significant advantages in economic efficiency, removal performance, environmental benefits, and adaptability compared to traditional air stripping.

Mar 17,2025

Challenges and Issues of Using Phosphoric Acid as an Absorption Liquid in Membrane-Based Ammonia Removal

While phosphoric acid can theoretically be used in membrane-based ammonia removal, its rapid pH fluctuation, limited absorption capacity, unstable reaction products, membrane fouling risks, and poor economic viability make it less suitable for practical applications. Currently, sulfuric acid (H₂SO₄), nitric acid (HNO₃), and hydrochloric acid (HCl) are more commonly used due to their higher efficiency and stability. When selecting an absorption liquid, it is essential to consider chemical stability, ammonia removal performance, and long-term operational costs to optimize the overall process.to resist.

Nov 20,2024

Ammonia Removal By TMCS Technology

We're excited to introduce you to TMCS (TransMembrane ChemiSorption) technology, which is based on SCINANO’s PTFE hollow fiber membrane contactor.

Jul 23,2024

Experimental Report III on PTFE Membrane Deamination Test at High Temperature

When the amount of alkali added to the raw water increases, the ammonium root in the raw water will fully react with the hydroxide to generate ammonia, which increases the air permeability of the deammoniated membrane, resulting in a decrease in the ammonia nitrogen produced in the water. When the influent flow rate decreases, the air permeability per unit area of the deamination membrane increases, and the deamination effect is enhanced, which causes the decrease of ammonia nitrogen in water production.

Jul 18,2024

Experimental Report on High Temperature PTFE Membrane Deamination Test II

Under the conditions of raw water temperature 70 ℃ and acid absorption solution pH = 1, when the alkali addition amount of wastewater is about 1.5g/L(pH = 9.03) and the raw water flow rate is 13.2L/h, the ammonia nitrogen content of water produced by primary membrane deamination after stable operation is 9.5mg/L, which meets the ammonia nitrogen requirement of drainage. The raw water is fed into 20L, and the sulfuric acid absorption solution is reduced by about 0.2L. In order to ensure the stable discharge of effluent up to standard, the alkali addition amount can be controlled to 1.5g/L, the raw water flow rate to 12.0L/h, and the ammonia nitrogen content of the water produced by the primary membrane deamination after stable operation is 7.2mg/L.

Jul 16,2024

Experimental Report on High Temperature PTFE Membrane Deamination Test

In this small-scale experiment, under the conditions of raw water temperature 70 ℃, alkali addition amount of wastewater about 2g/L(pH = 9.29), and acid absorption solution pH = 1.5: when the raw water flow rate is 16.8L/h, the ammonia nitrogen content of water produced by primary membrane deamination is 7.4mg/L after 10 minutes of stable operation, which meets the ammonia nitrogen requirement of drainage.

< 1 2 3 4 5 6 7 > proceed page

Contact Information

Phone: +86-136 0515 6371
WhatsApp: +60 10 393 4990

Mailbox: zili@scinanomem.com
Address: Building 17, Hefei High-tech International Enterprise Port, Liandong U Valley, No. 2899 Kongquetai Road, High-tech Zone, Hefei, China

Website construction:China Enterprise Power | Hefei |Label

Business License