Chemical Flocculation for Suspended Solids Removal at Remote Mine Sites

1984 ◽  
Vol 27 (5) ◽  
pp. 1332-1338
Author(s):  
J. S. Tapp ◽  
B. J. Barfield ◽  
M. L. Griffm
2015 ◽  
Vol 10 (1s) ◽  
Author(s):  
Bruno Boz ◽  
Giuseppina Pipitone ◽  
Bruna Gumiero ◽  
Paolo Bazzoffi ◽  
Luigi Sansone

Several studies have described the effectiveness of vegetated buffer strips, interposed between the cultivated areas and water bodies, in removal of suspended solids and other pollutants such as Glyphosate conveyed through surface runoff. This monitoring study has quantified the effects of a 5-metre wide herbaceous buffer zone, adjacent to a vineyard, built according to the Standard 5.2 of Cross-compliance (M.D. 27417). The amount of runoff generated was 3.9% of the total annual rainfall, with negligible differences in terms of volume after flowing through the buffer zone. The effectiveness of the buffer zone in suspended solids removal was, in terms of mass balance, of 45.5%. The glyphosate outputs from the vineyard, unlike in other experiences, were negligible and therefore it was not possible to evaluate the efficiency of the buffer zone in removing it. This is due to the low rainfall occurred in the period following distribution that has favoured <em>in situ</em> degradation of Glyphosate.


2018 ◽  
Vol 44 ◽  
pp. 00072
Author(s):  
Małgorzata Komorowska-Kaufman ◽  
Filip Ciesielczyk ◽  
Alina Pruss ◽  
Teofil Jesionowski

The paper presents the results of analyzes of the granulometric composition of suspended solids in backwash water from biological activated carbon (BAC) filters and its changes during sedimentation. Backwash water samples were taken during backwashing of two pilot filters after different filtration time. It was found that regardless of the concentration of suspended solids in the collected backwash water, particle sizes vs. their percentage volume contributions for all samples were similar. Particle sizes were in the range of 2–100 μm. However, the two-hour sedimentation for most of the samples proved to be effective (total suspended solids removal up to 93%), which is caused by self-coagulation of the sample.


2020 ◽  
Vol 12 (17) ◽  
pp. 7196 ◽  
Author(s):  
Salvatore Falco ◽  
Giuseppe Brunetti ◽  
Giovanna Grossi ◽  
Mario Maiolo ◽  
Michele Turco ◽  
...  

At the outlet of the Vermicelli catchment—a peri-urban area located in the campus of University of Calabria (Cosenza, Southern Italy)—a sedimentation tank is located, aiming at collecting the basin surface runoff and improve its quality. First, experimental results of the treatment effects are here presented and analyzed. In addition, a monitoring campaign was conducted in order to characterize the particles transported by surface runoff and to determine the treatment efficiency of the tank. The analysis showed the presence of a pollutant load in the surface runoff of the Vermicelli basin and provided information on its particle-size distribution (PSD). Results were considered in terms of the treatment efficiency of the sedimentation tank, showing a good overall removal efficiency value, together with a high variability of the removal sedimentation efficiency. This variability is mainly due to the different grain size of the suspended solids and the characteristics of the rainfall event.


2018 ◽  
Vol 250 ◽  
pp. 06004
Author(s):  
Nur Sumaiyyah Supian ◽  
Johan Sohaili ◽  
Shantha Kumari Muniyandi ◽  
Athirah Othman ◽  
Nur Suraya Kamsano

Growing of mankind, society, science and technology in our world is reaching to higher level of human civilization. Therefore, a sustainable treatment procedures are required in order to prevent the consequences of growing civilized situation to the environment. Magnetism has been used as physical treatment for particles or contaminants removal from wastewater. In this experiment, comparison between locations of steel wool has been carried out in order to determine the highest suspended solid removal. Variables has been set such as magnetic strength was 1.4Tesla, flow rate was 1mL/s, 80 gram of steel wool and experiment took 24 hours of circulation time and data recorded for 24 hours. Data were recorded involving control, non-inverted magnet and inverted magnet structure. Non-inverted magnets consists of magnets on same poles while inverted magnet on different poles. As a result, steel wool located inside of pipe was exhibited the highest removal (88.2%) compared to outside of the pipe (83.3%) and both occurred in inverted magnet structure. Therefore, it was indicated that longer exposure time to magnet resulted in greater improvement in removing pollutant. The results obtained and suggests that steel wool located inside of tube with inverted magnet position can be successfully treat wastewater effectively.


Water ◽  
2017 ◽  
Vol 9 (6) ◽  
pp. 448 ◽  
Author(s):  
Margarita Jover-Smet ◽  
Jaime Martín-Pascual ◽  
Arturo Trapote

Author(s):  
S. Tsukuda ◽  
J. Davidson ◽  
E. Adkins ◽  
S. Summerfelt

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