Views: 8 Author: Site Editor Publish Time: 2020-08-21 Origin: Site
1. The structure of ultrafiltration ceramic membrane
Ultrafiltration ceramic membrane has excellent chemical corrosion resistance, which is suitable for operation in pH range of 0-14, and oxidation resistance. It can be cleaned and regenerated with strong oxidant such as high nacio content. The ceramic membrane is made of - a1o2 / ZrO2. The pore diameter of the membrane is 0.1um. The membrane plate is composed of support, transition layer and film layer. The support rice was sintered with imported high purity a-a1o2 at high temperature, and the transition layer was sintered by ZrO2 at high temperature. The membrane was coated on the surface of transition layer by high temperature sintering with modified zo2 material.
2. Ceramic membrane filtration process
The operation mode of ultrafiltration ceramic membrane system is cross flow circulating filtration to avoid the continuous deposition of solid particles and other impurities in the system on the membrane surface, and the concentration solution is returned to the front pretreatment with mass fraction of 1% - 2% or concentrated solution collection tank. It is inevitable that some pollutants will be adsorbed on the membrane surface during long-term operation. After the membrane is polluted, the flux is recovered by cleaning, which is mainly divided into three parts: alkali washing, acid washing and rinsing. The acid and alkali used for cleaning only circulates inside the ceramic membrane system and will not affect the pipeline equipment outside the system.
3. The application of ceramic membrane
Secondary brine filtration, alkali liquor desalination filtration, decarbonization liquid filtration, dicyandiamide liquid fine filtration, nitric acid and sulfuric acid filtration, terminal solution fine filtration and purification, and raw material liquid fine filtration (acid, alkali, alcohol, ketone water, etc.). Filtration and clarification of pharmaceutical and biochemical liquid, decoloration filtration of activated carbon, filtration of catalyst (palladium, carbon, nickel, etc.), steam filtration. All kinds of domestic water, process water treatment, industrial wastewater purification (coking water, turbid circulating water, etc.), suitable for production and industrial oily wastewater treatment, industrial water treatment, industrial circulating cooling water purification, high-purity process water purification, production water treatment, ultrafiltration, reverse osmosis, electrodialysis, pre filtration before ion exchange resin, reclaimed water reuse treatment, equipment freezing Filtration of cooling circulating water, filtration and purification of industrial wastewater, precise filtration of river water, well water and lake water. Clarification, concentration and sterilization of wine, juice and beverage, and clarification, concentration and sterilization of various food flavoring agents.