4Vema A K, Dash R R Bhunia P. A review on chemical eoagulation/flocculation technologies for removal of col- our from textile wastewaters [ J ]. Journal of. Enriron- mental Management 2012,93 : 154 - 168.
6Mohan D Pittman C U. Activated carbons and low cost adsorbents for remediation of tfi - andhexavalent chro- mium from Water[ J ]. Journal of Hazardous Materials, 2006 : B137:762 - 811.
7Rahman M A Hasegawa H. Aquatic arsenic:Phytore- medlution using floating macrophytes [ J ]. Chemo- sphere ,2011,83:633 - 649.
