Industrial Wastewater Treatment and Alkaline Recovery Electrodialysis Unit

Rubri mahir dalam teknologi dialisis resapan dan mahir dalam mereka bentuk dan melaksanakan penyelesaian tersuai, menyediakan pelanggan dengan penyelesaian pengeluaran hijau dan bersih yang komprehensif.

Rubri mahir dalam teknologi elektrodialisis membran bipolar dan mahir dalam mereka bentuk dan melaksanakan penyelesaian tersuai, menyediakan pelanggan dengan pelan pengeluaran hijau dan bersih yang komprehensif.

Prinsip Teras ElektrodialisisTeras teknologi elektrodialisis terletak pada gabungan medan elektrik dan teknologi membran terpilih, dengan prinsip khusus dibahagikan kepada dua bahagian:1. Kesan pemacu medan elektrik DCDi bawah tindakan medan elektrik DC, anion dan kation dalam larutan bergerak secara berarah: kation berhijrah ke arah elektrod negatif, manakala anion berhijrah ke arah elektrod positif.2. Kesan penapisan terpilih membran pertukaran ionDua jenis membran pertukaran ion digunakan dalam sistem untuk mencapai pemisahan ion:Membran pertukaran kation: Hanya membenarkan kation (contohnya, Na+, Ca2+, Mg2+) untuk melaluinya, sambil menyekat anion.Membran pertukaran anion: Hanya membenarkan anion (cth., Cl-, jadi42-) untuk melaluinya, sambil menyekat kation.

This technology is based on the principle of bipolar membrane electrodialysis. Under the action of a direct current electric field, it utilizes bipolar membranes to efficiently dissociate water molecules into hydrogen ions and hydroxide ions. This process then directionally converts salts in electroplating wastewater (such as sodium chloride, sodium sulfate, etc.) into corresponding acids (such as hydrochloric acid, sulfuric acid) and alkalis (such as sodium hydroxide), achieving the dual objectives of wastewater purification and resource recovery.

Core Principle of Electrodialysis The core of electrodialysis technology lies in the combination of electric field and selective membrane technology. Its specific principle is divided into two parts: Driving Effect of DC Electric Field and Concentration GradientUnder the action of a DC electric field or concentration gradient, anions and cations in the solution move directionally: cations migrate toward the negative electrode, while anions migrate toward the positive electrode; solutes move from high-concentration solutions to low-concentration ones. Selective Sieving Effect of Ion Exchange MembranesTwo types of ion exchange membranes are used in the system to achieve ion separation: Cation Exchange Membrane: Only allows cations (e.g., Na⁺, Ca²⁺, Mg²⁺) to pass through, while blocking anions. Anion Exchange Membrane: Only allows anions (e.g., Cl⁻, SO₄²⁻) to pass through, while blocking cations.

Core Principle of Bipolar Membrane Electrodialysis (BPED) The core of BPED technology lies in the combination of electric field, selective membrane technology, and the unique water-splitting capability of bipolar membranes. 1. Driving Effect of DC Electric FieldUnder a DC electric field, ions migrate directionally: cations move toward the cathode, while anions move toward the anode. 2. Membrane Functions Bipolar Membrane (BPM): Splits water ( H2​O ) into H+ and OH− ions under the electric field, providing a source for acid and base production. Cation Exchange Membrane (CEM): Selectively allows cations to pass through. Anion Exchange Membrane (AEM): Selectively allows anions to pass through. By arranging these membranes alternately, salts can be converted into corresponding acids and bases.