scholarly journals Water treatment sludge can be used as an adsorbent for heavy metals in wastewater streams

2010 ◽  
Author(s):  
Y.-F. Zhou ◽  
R. J. Haynes
Keyword(s):  
Heavy Metals ◽  
Water Treatment ◽  
Water Treatment Sludge

scholarly journals IMMOBILIZATION OF SOME HEAVY METALS IN GEOPOLYMER BASED ON WATER TREATMENT SLUDGE AND ALUM INDUSTRY SOLID WASTE

2020 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Ahmed Abdelaal ◽  
Mohammed Abdelmawla ◽  
Mokhtar Beheary ◽  
Nabil Abdullah ◽  
Taha Razek
Keyword(s):  
Heavy Metals ◽  
Water Treatment ◽  
Solid Waste ◽  
Water Treatment Sludge

scholarly journals Heavy metals in a degraded soil treated with sludge from water treatment plant

2005 ◽  
Vol 62 (5) ◽  
pp. 498-501 ◽  
Author(s):  
Sandra Tereza Teixeira ◽  
Wanderley José de Melo ◽  
Érica Tomé Silva
Keyword(s):  
Heavy Metals ◽  
Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
National Forest ◽  
Water Treatment Sludge ◽  
Retention Capacity ◽  
Degraded Soil ◽  
Metal Contents ◽  
Randomized Experimental Design

The application of water treatment sludge (WTS) to degraded soil is an alternative for both residue disposal and degraded soil reclaim. This study evaluated effects of the application of water treatment sludge to a Typic Hapludox soil degraded by tin mining in the National Forest of Jamari, State of Rondonia, Brazil, on the content of heavy metals. A completely randomized experimental design with five treatments was used: control (n = 4); chemical control, which received only liming (n = 4); and rates D100, D150 and D200, which corresponded to 100, 150 and 200 mg of N-sludge kg-1 soil (n = 20), respectively. Thirty days after liming, period in which soil moisture was kept at 70% of the retention capacity, soil samples were taken and analyzed for total and extractable Fe, Cu, Mn, Zn, Cd, Pb, Ni, and Cr. The application of WTS increased heavy-metal contents in the degraded soil. Although heavy metals were below their respective critical limits, sludge application onto degraded areas may cause hazardous environmental impact and thus must be monitored.

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