scholarly journals Behavior and Distribution of Heavy Metals Including Rare Earth Elements, Thorium, and Uranium in Sludge from Industry Water Treatment Plant and Recovery Method of Metals by Biosurfactants Application

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Lidi Gao ◽  
Naoki Kano ◽  
Yuichi Sato ◽  
Chong Li ◽  
Shuang Zhang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Rare Earth ◽  
Water Treatment ◽  
Rare Earth Elements ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Natural Soil ◽  
Recovery Method ◽  
Removal Of Heavy Metals ◽  
Fraction Bound

In order to investigate the behavior, distribution, and characteristics of heavy metals including rare earth elements (REEs), thorium (Th), and uranium (U) in sludge, the total and fractional concentrations of these elements in sludge collected from an industry water treatment plant were determined and compared with those in natural soil. In addition, the removal/recovery process of heavy metals (Pb, Cr, and Ni) from the polluted sludge was studied with biosurfactant (saponin and sophorolipid) elution by batch and column experiments to evaluate the efficiency of biosurfactant for the removal of heavy metals. Consequently, the following matters have been largely clarified. (1) Heavy metallic elements in sludge have generally larger concentrations and exist as more unstable fraction than those in natural soil. (2) Nonionic saponin including carboxyl group is more efficient than sophorolipid for the removal of heavy metals in polluted sludge. Saponin has selectivity for the mobilization of heavy metals and mainly reacts with heavy metals in F3 (the fraction bound to carbonates) and F5 (the fraction bound to Fe-Mn oxides). (3) The recovery efficiency of heavy metals (Pb, Ni, and Cr) reached about 90–100% using a precipitation method with alkaline solution.

UNJUK KERJA DAN EFISIENSI IPAL INDUSTRI BATIK CETAK DI MAKAMHAJI, SUKOHARJO DENGAN PROSES BAR SCREEN, SEDIMENTASI, DAN PROSES KOAGULASI-FLOKULASI TERHADAP PENURUNAN PARAMETER COD, BOD DAN LOGAM BERAT Cr

EKUILIBIUM ◽  
2011 ◽  
Vol 10 (1) ◽  
Author(s):  
Muljadi Muljadi
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Wastewater Treatment ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Waste Water Treatment Plant ◽  
Maximum Efficiency ◽  
The Village

<p><strong><em>Abstract</em></strong><strong>: </strong><em>Batik industry in general is equipped with the Waste Water Treatment Plant (WWTP) used for wastewater treatment in order not to endanger the environment. Printed batik industry in Makamhaji, Sukoharjo equipped Wastewater Treatment Plant (WWTP) with the bar screen, sedimentation and coagulation-flocculation for wastewater treatment in the process is simple and economical to manufacture.The research objective was to determine the magnitude of performance and efficiency of industrial WWTP batik print with the bar screen, sedimentation, and the process of coagulation - flocculation of the reduction parameters COD, BOD and heavy metals Cr. The method used is an experimental method is to perform experiments on WWTP wastewater treatment industry in the village batik print Butulan Makamhaji Sukoharjo district.Of research that has been made </em><em></em><em>known that the greater efficiency resulting from the units of the performance of the unit means that the better. And obtain maximum efficiency of the reduction parameters of COD, BOD is the bar screen unit for 37.61% and 27.22%. As for the maximum efficiency of the reduction of Cr metal pollutant parameters are in units of coagulation-flocculation of 23.66%.</em></p><p><em> </em><strong><em>Keywords</em></strong><em>: COD, BOD, heavy metals chromium, Efficiency WWTP, WWTP Performance</em></p>

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.

Assessment of a wastewater stabilization pond system for removal of arsenic, iron, and ammonia from reverse osmosis water treatment plant residual wastewater

2021 ◽  
Author(s):  
Harrison Bull ◽  
Ali Ekhlasi Nia ◽  
Mohsen Asadi ◽  
Kerry McPhedran
Keyword(s):  
Heavy Metals ◽  
Drinking Water ◽  
Water Treatment ◽  
Treatment Plant ◽  
Drinking Water Treatment ◽  
Water Treatment Plant ◽  
Depth Data ◽  
Water Treatment Plants ◽  
Removal Of Arsenic ◽  
Wastewater Stabilization Ponds

Drinking water treatment plants (DWTPs) produce wastewaters with elevated concentrations of heavy metals, metalloids, ammonia, and other contaminants. These wastewaters require treatment via processes including wastewater stabilization ponds (WSPs). This study assessed the arsenic (As), iron (Fe), and ammonia (NH3) concentrations in a Saskatchewan DWTP WSP system of five sequential ponds. Drone imaging combined with flow and depth data was used to estimate retention times which increased from 7-9 to 8-10 days after the DWTP upgrade. Concentration trends showed Fe decreased from Pond 1 to 3 and increased in Ponds 3 and 5, while As decreased from Pond 1 to 5. Average effluent As concentrations of 10.6 µg/L were over the 5.0 µg/L guideline, while both Fe and NH3 concentrations guidelines were easily met post-upgrade in 2020. Several actions are recommended to ensure adequate WSP operation including dredging, aeration, and installing macrophytes capable of As uptake.

scholarly journals Indigenous copper resistant bacteria isolated from activated sludge of water treatment plant in Surabaya, Indonesia

2020 ◽  
Vol 21 (11) ◽  
Author(s):  
Irawati Wahyu ◽  
REINHARD PINONTOAN ◽  
TRIWIBOWO YUWONO
Keyword(s):  
Heavy Metals ◽  
Wastewater Treatment ◽  
Water Treatment ◽  
Activated Sludge ◽  
Treatment Plant ◽  
Dry Weight ◽  
Water Treatment Plant ◽  
Industrial Plant ◽  
Resistant Bacteria ◽  
Biological Wastewater Treatment

Abstract. Irawati W, Pinontoan R, Yuwono T. 2020. Indigenous copper resistant bacteria isolated from activated sludge of water treatment plant in Surabaya, Indonesia. Biodiversitas 21: 5077-5084. Biological wastewater treatment using activated sludge is a promising wastewater treatment solution for removing heavy metals. To improve the effectiveness of biological wastewater treatment, activated sludge must consist of bacteria that can remove heavy metals through the process of bioaccumulation and biosorption. This study was aimed to isolate indigenous copper resistant bacteria and determining their resistance to copper, as well as analyzing their ability to accumulate and remove copper. Copper resistant bacteria were isolated from activated sludge of water treatment plant in industrial plant in Rungkut, Surabaya. Resistance to copper was analyzed by determining the value of minimum inhibitory concentration (MIC). The ability of bacterial isolates to remove copper was analyzed by atomic absorption spectrophotometer. A total of six highly copper resistant bacteria were isolated and designated as B6.1, C8.1, C9.3, C9.4, C9.5, C10.4 isolates. All isolates were categorized as high resistant bacteria with the MICs of 9-11 mM CuSO4. The two highest copper resistant bacteria were isolates C10.4 and C9.4. The ability of the two isolates to accumulate copper was 8.02 mg and 4.83 mg per gram dry weight of cells and to remove of copper up to 20.45% and 17.66%, respectively.

DESIGNING OF REMOTE TERMINAL UNIT (RTU) FOR MEASUREMENT OF pH IN WATER TREATMENT PLANT

2019 ◽  
Vol 10 (1) ◽  
pp. 16
Author(s):  
V. MANE-DESHMUKH PRASHANT ◽  
B. MORE ASHWINI ◽  
B. P. LADGAOKAR ◽  
S. K. TILEKAR ◽  
◽  
...  
Keyword(s):  
Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Terminal Unit ◽  
Remote Terminal ◽  
Remote Terminal Unit
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