Assessment of suspended solid and particles removal efficiency for hybrid systems connecting a technical BMP device to low impact development technology

2020 ◽  
Vol 200 ◽  
pp. 400-406
Author(s):  
Sung Min Cha ◽  
Taeyoon Kim ◽  
Sunghoon Hong ◽  
Hyun Suk Shin ◽  
Jong Bin Park ◽  
...  
Keyword(s):  
Hybrid Systems ◽  
Removal Efficiency ◽  
Low Impact Development ◽  
Suspended Solid ◽  
Development Technology

Experiment and Practice on the Wastewater Treatment in Tunnel Construction Processing

2013 ◽  
Vol 664 ◽  
pp. 13-18
Author(s):  
Rong Gui Fan ◽  
Hui Chuan Wang ◽  
Xian Li
Keyword(s):  
Water Quality ◽  
Wastewater Treatment ◽  
Removal Efficiency ◽  
Preliminary Test ◽  
Treatment Method ◽  
Suspended Solid ◽  
Tunnel Construction ◽  
Rotational Flow ◽  
Wastewater Discharge ◽  
Sedimentation Tank

The concentration of suspended solid (SS) was confirmed as the main pollutants in wastewater from the tunnel construction processing through wastewater source and water quality in the tunnel construction processing being analyzed. The rapid wastewater treatment device was designed which combined with rotational flow sedimentation tank and flocculation reaction pool that the cement was used as flocculants. The results showed at the preliminary test that the removal efficiency of SS was above 94%. The effluent can meet the wastewater discharge standard. It was the fact that the treatment method was fast and convenient processing.

scholarly journals Treatment of Al Doura Oil Refinery Wastewater Turbidity using Magnetic Flocculation

2019 ◽  
pp. 1-8
Author(s):  
Muzher Al doury ◽  
Hadeel Al samerrai
Keyword(s):  
Removal Efficiency ◽  
Suspended Solids ◽  
Suspended Solid ◽  
Operating Conditions ◽  
Oil Refinery ◽  
Refinery Wastewater ◽  
Turbidity Removal ◽  
Aluminum Sulphate ◽  
Solids Removal ◽  
Oil Refinery Wastewater

The use of conventional flocculants such as Aluminum sulphate (Alum) alone to treat the wastewater may be insufficient to get the required turbidity, suspended solids removal as well as it requires relatively a long residence time. Magnetic flocculation is one of the used techniques for increase the efficiency of the turbidity removal. In the present study, three sets of experiments are carried out in order to investigate the possibility of increasing the suspended solid removal efficiency from Al Doura oil refinery wastewater using iron oxide (Fe3O4), Nickel (Ni), and Cobalt (Co) ferromagnetic powders with alum. The following operating conditions namely, pH, alum dose, ferromagnetic powder dose, and initial turbidity are studied. The results revealed that an improvement in turbidity removal efficiency is satisfied, as well as, a reasonable reduction in the sedimentation period is achieved. The highest turbidity removal is 99.88% that obtained for 122NTU sample for alum dose 120 mg/L+ Nickel dose of 80mg/L and pH of 6.5.

scholarly journals Analysis of the influence of rapid filter cycle interruption on filtrate quality

2021 ◽  
Vol 11 (9) ◽  
Author(s):  
M. Zielina
Keyword(s):  
Removal Efficiency ◽  
Filtration Rate ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Suspended Solid ◽  
Particle Removal ◽  
Solid Concentration ◽  
Suspended Solid Concentration ◽  
Filter Cycle

AbstractThe article presents research carried out on a sand/anthracite filter in a water treatment plant in Cracow in the south of Poland. These studies show that shutting down the filter after only three hours of operation, setting it aside for four hours and restarting without backwashing did not cause any visible deterioration in the quality of the produced filtrate. Stopping the same filter for four hours, however, after 68 h of operation, visible deterioration in the quality of the filtrate can be observed. After a significant initial deterioration, the quality of the filtrate slowly improved and after a few hours, it reached a level comparable to that before the filter was taken out of service. This was probably the result of characteristic changes in shear stress at the boundary of the deposit and flowing water in the capillaries, which accompanied changes of filtration rate. Decrease in the removal efficiency of coarser particles lasted longer and was greater than that of finer particles. Decrease in particle removal efficiency after restarting the dirty filter was difficult to identify by turbidity measurements, but clearly identifiable by measuring suspended solid concentration and the number of coarser particles. Interrupting the operation of a rapid filter shortly after it has been backwashed should not significantly reduce its efficiency, but after prolonged operation, it may adversely affect the quality of the filtrate.

scholarly journals Treatment of Domestic Wastewater with Fixed Bed Biofilm Reactor

2018 ◽  
Vol 7 (4.35) ◽  
pp. 22
Author(s):  
Gasim Hayder ◽  
Puniyarasen Perumulselum ◽  
Hitham Alhussian
Keyword(s):  
Removal Efficiency ◽  
Fixed Bed ◽  
Oxygen Demand ◽  
Domestic Wastewater ◽  
Total Suspended Solid ◽  
Suspended Solid ◽  
Biofilm Reactor ◽  
Scale Model ◽  
Mixed Liquor Suspended Solid ◽  
Biofilm Reactors

Fixed bed biofilm reactors were evaluated with three different arrangements of bio-balls. The performance of different arrangements was evaluated based on chemical oxygen demand (COD), total suspended solid (TSS) and mixed liquor suspended solid (MLSS). The three rectors were fabricated and operated in lab scale model with real domestic wastewater. Considering the TSS removal efficiency, arrangement one was the best followed by arrangement two and arrangement three. While for COD, arrangement one recorded the highest removal efficiency followed by arrangement two and column. The average COD concentration for arrangement one was 23 while for arrangement two and arrangement three was 25 and 36 mg/l respectively. The overall average effluent TSS concentrations for the arrangement one, two and three were 25, 32 and 45 mg/l respectively. TSS and COD removal was almost the same for arrangement one and arrangement two but arrangement one has the highest among them, and all removal is acceptable under Malaysian standards. Besides that, all the three arrangements have the differences in terms of maintenance and installation. There was no clogging occurred in all the three arrangements.

Bioretention cell efficacy in cold climates: Part 1 — hydrologic performance

2012 ◽  
Vol 39 (11) ◽  
pp. 1210-1221 ◽  
Author(s):  
U.T. Khan ◽  
C. Valeo ◽  
A. Chu ◽  
B. van Duin
Keyword(s):  
Field Experiments ◽  
Peak Flow ◽  
Low Impact Development ◽  
High Volume ◽  
Simulation Experiments ◽  
Flow Rates ◽  
Development Technology ◽  
Cold Condition ◽  
Urban Stormwater Runoff

Bioretention cells are an emerging low impact development technology that address urban stormwater runoff concerns. Field and column experiments were conducted to assess the efficacy of bioretention cells in cold conditions. Field experiments in a prairie environment demonstrated a significant decrease (91.5%) in effluent volumes compared to influent volumes. The majority (∼60%) of the runoff percolated to the surrounding soils or evapotranspirated. Cold condition performance significantly impacted high volume events and was characterized by significantly higher effluent volumes, significantly lower runoff storage, higher effluent peak flow rates, and longer peak delays. A partially frozen surface layer caused the changes in performance. Long-term simulation experiments on the columns indicated a significant decrease in saturated hydraulic conductivity over the first 4 equivalent years of operation, before levelling to a constant value.

scholarly journals A Fast Predicting Neural Fuzzy Model for Suspended Solid Removal Efficiency in Multimedia Filter

2010 ◽  
Vol 01 (04) ◽  
pp. 438-447
Author(s):  
Rusul Naseer ◽  
Alaa' Abdulrazaq Jassim ◽  
Saad AbuAlhail
Keyword(s):  
Removal Efficiency ◽  
Fuzzy Model ◽  
Suspended Solid ◽  
Neural Fuzzy
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