广州化工
廣州化工
엄주화공
GUANGZHOU CHEMICAL INDUSTRY AND TECHNOLOGY
2012年
11期
122-123,158
,共3页
光催化氧化%无机膜%分离技术
光催化氧化%無機膜%分離技術
광최화양화%무궤막%분리기술
光催化高级氧化技术在深度水处理方面具有降解无选择性、高效、无二次污染的独特优势,光催化反应器是光催化反应高效进行的关键。在众多反应器中悬浮式反应器体现出传质优良、光源利用率高的特点,但催化剂细微颗粒的分离回收难以实现。本文利用自行设计的无机陶瓷膜分离组件对催化剂进行分离回收,对原生粒径21nm的二氧化钛催化剂颗粒的分离效率达到99%,在操作压力为0.4MPa时的膜渗透通量约为200L·m-2.h-1。
光催化高級氧化技術在深度水處理方麵具有降解無選擇性、高效、無二次汙染的獨特優勢,光催化反應器是光催化反應高效進行的關鍵。在衆多反應器中懸浮式反應器體現齣傳質優良、光源利用率高的特點,但催化劑細微顆粒的分離迴收難以實現。本文利用自行設計的無機陶瓷膜分離組件對催化劑進行分離迴收,對原生粒徑21nm的二氧化鈦催化劑顆粒的分離效率達到99%,在操作壓力為0.4MPa時的膜滲透通量約為200L·m-2.h-1。
광최화고급양화기술재심도수처리방면구유강해무선택성、고효、무이차오염적독특우세,광최화반응기시광최화반응고효진행적관건。재음다반응기중현부식반응기체현출전질우량、광원이용솔고적특점,단최화제세미과립적분리회수난이실현。본문이용자행설계적무궤도자막분리조건대최화제진행분리회수,대원생립경21nm적이양화태최화제과립적분리효솔체도99%,재조작압력위0.4MPa시적막삼투통량약위200L·m-2.h-1。
Photocatalysis, an advanced oxidation technology, attracted more and more attention in sewage treatment for its advantages in no selectivity, no secondary pollution and high efficiency, etc. Photocatalytic reactor was the key of the reaction efficiency. Slurry reactor had special advantages of high efficiency and high mass transfer effect among these photocatalytical reactores, but the primary weakness was the difficulty to separate the powder photocatalyst from suspen- sion. The liquid - solid separation technology using inorganic ceramic membrane was developed to solve this technical dif- ficulty. The results revealed that the separation efficiency of nanometer photocatalyst powder can reach more than 99.2%, and the infiltration flux was 200 L m -2 . h -1 when the operation press was 0.4 MPa.