Abdel-Raouf N, Al-Homaidan A A, Ibraheem I B M
Botany and Microbiology Department, Faculty of Science, Medical Studies and Sciences Sections, King Saud University, Riyadh, Saudi Arabia.
Botany and Microbiology Department, Faculty of Science, P.O. Box 2455, King Saud University, Riyadh, Saudi Arabia.
Saudi J Biol Sci. 2012 Jul;19(3):257-75. doi: 10.1016/j.sjbs.2012.04.005. Epub 2012 May 3.
Organic and inorganic substances which were released into the environment as a result of domestic, agricultural and industrial water activities lead to organic and inorganic pollution. The normal primary and secondary treatment processes of these wastewaters have been introduced in a growing number of places, in order to eliminate the easily settled materials and to oxidize the organic material present in wastewater. The final result is a clear, apparently clean effluent which is discharged into natural water bodies. This secondary effluent is, however, loaded with inorganic nitrogen and phosphorus and causes eutrophication and more long-term problems because of refractory organics and heavy metals that are discharged. Microalgae culture offers an interesting step for wastewater treatments, because they provide a tertiary biotreatment coupled with the production of potentially valuable biomass, which can be used for several purposes. Microalgae cultures offer an elegant solution to tertiary and quandary treatments due to the ability of microalgae to use inorganic nitrogen and phosphorus for their growth. And also, for their capacity to remove heavy metals, as well as some toxic organic compounds, therefore, it does not lead to secondary pollution. In the current review we will highlight on the role of micro-algae in the treatment of wastewater.
由于家庭、农业和工业用水活动而释放到环境中的有机和无机物质会导致有机和无机污染。为了去除易于沉降的物质并氧化废水中存在的有机物质，越来越多的地方引入了这些废水的常规一级和二级处理工艺。最终结果是产生一种清澈、看似干净的废水，排放到天然水体中。然而，这种二级废水含有无机氮和磷，并且由于排放的难降解有机物和重金属而导致富营养化以及更长期的问题。微藻培养为废水处理提供了一个有趣的步骤，因为它们提供了三级生物处理，同时还能生产有潜在价值的生物质，可用于多种用途。微藻培养为三级和四级处理提供了一个优雅的解决方案，因为微藻能够利用无机氮和磷进行生长。而且，由于它们有能力去除重金属以及一些有毒有机化合物，因此不会导致二次污染。在当前的综述中，我们将重点介绍微藻在废水处理中的作用。
