Impact of artificial infiltration on removal of surfactants in surface water treatment process

2020 ◽  
Vol 199 ◽  
pp. 241-251
Author(s):  
Dorota Cierniak ◽  
Zbysław Dymaczewski ◽  
Joanna Jeż-Walkowiak ◽  
Aleksandra Makała ◽  
Bogdan Wyrwas
Keyword(s):  
Water Treatment ◽  
Surface Water ◽  
Treatment Process ◽  
Surface Water Treatment ◽  
Water Treatment Process

Chlorination by-products in surface water treatment process

Desalination ◽  
2003 ◽  
Vol 151 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Junsung Kim ◽  
Yong Chung ◽  
Dongchun Shin ◽  
Myungsoo Kim ◽  
Yonghun Lee ◽  
...  
Keyword(s):  
Water Treatment ◽  
Surface Water ◽  
Treatment Process ◽  
Surface Water Treatment ◽  
Water Treatment Process ◽  
By Products

Removal of cyanobacteria, cyanotoxins, heterotrophic bacteria and endotoxins at an operating surface water treatment plant

2006 ◽  
Vol 54 (3) ◽  
pp. 23-28 ◽  
Author(s):  
J. Rapala ◽  
M. Niemelä ◽  
K.A. Berg ◽  
L. Lepistö ◽  
K. Lahti
Keyword(s):  
Water Treatment ◽  
Surface Water ◽  
Treatment Process ◽  
Heterotrophic Bacteria ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Bacterial Isolates ◽  
Sand Filtration ◽  
Surface Water Treatment ◽  
Guide Value

The removal of cyanobacteria, hepatotoxins produced by them (microcystins), phytoplankton, heterotrophic bacteria and endotoxins were monitored at a surface water treatment plant with coagulation, clarification, sand filtration, ozonation, slow sand filtration and chlorination as the treatment process. Coagulation–sand filtration reduced microcystins by 1.2–2.4, and endotoxins by 0.72–2.0 log10 units. Ozonation effectively removed the residual microcystins. The treatment process reduced phytoplankton biomass by 2.2–4.6 and heterotrophic bacteria by 2.0–5.0 log10 units. In treated water, the concentration of microcystins never exceeded the WHO guide value (1 μg/L), but picoplankton and monad cells were often detected in high numbers. The heterotrophic bacterial isolates from the treated waters belonged to genera Sphingomonas, Pseudomonas, Bacillus, Herbaspirillum and Bosea.

Oxidation of manganese in drinking water systems using potassium permanganate

2002 ◽  
Vol 2 (5-6) ◽  
pp. 173-178
Author(s):  
R. Raveendran ◽  
B. Chatelier ◽  
K. Williams
Keyword(s):  
Water Treatment ◽  
Surface Water ◽  
Potassium Permanganate ◽  
Treatment Process ◽  
Chemical Oxidation ◽  
Water Reservoirs ◽  
Advantages And Disadvantages ◽  
Water Treatment Process ◽  
Treatment Techniques ◽  
Treatment Facilities

South Gippsland Region Water Authority experience manganese problems in most of their surface water reservoirs. Manganese is present in the form of manganese(II) ions and manganic dioxide solids. At low dissolved oxygen levels, the manganic dioxide is reduced to the manganese(II) ion. If not oxidised, the manganese(II) ion escapes through water treatment facilities and enters the supply system. Once in the system, the manganese ions are gradually oxidised to insoluble manganic dioxide causing dirty water problems which can stain clothes and bathing equipment. As part of the water treatment process, manganese(II) can be oxidised to insoluble manganic oxide and then removed by clarification and filtration. Generally, oxidation can be achieved by aeration or chemical oxidation by addition of an oxidising agent such as potassium permanganate (KMnO4) or chlorine. However, due to fluctuations of manganese levels in raw water, treatment techniques are often very difficult. This paper shares the experiences of South Gippsland Water in using potassium permanganate as part of the water treatment process to remove manganese in its surface water reservoirs. Whilst consideration is given to the advantages and disadvantages of alternative oxidation methods, this paper primarily focuses on the use of KMnO4 to remove manganese and the resulting analytical problems associated with monitoring manganese levels.

Effect of drinking water treatment process parameters on biological removal of manganese from surface water

2014 ◽  
Vol 66 ◽  
pp. 31-39 ◽  
Author(s):  
Victoria W. Hoyland ◽  
William R. Knocke ◽  
Joseph O. Falkinham ◽  
Amy Pruden ◽  
Gargi Singh
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Surface Water ◽  
Process Parameters ◽  
Treatment Process ◽  
Drinking Water Treatment ◽  
Water Treatment Process ◽  
Biological Removal

scholarly journals Eco-Friendly Coagulant versus Industrially Used Coagulants: Identification of Their Coagulation Performance, Mechanism and Optimization in Water Treatment Process

2021 ◽  
Vol 18 (17) ◽  
pp. 9164
Author(s):  
Nadiah Khairul Zaman ◽  
Rosiah Rohani ◽  
Izzati Izni Yusoff ◽  
Muhammad Azraei Kamsol ◽  
Siti Aishah Basiron ◽  
...  
Keyword(s):  
Water Treatment ◽  
Treatment Process ◽  
Process Time ◽  
Polyaluminum Chloride ◽  
Surface Water Treatment ◽  
Water Treatment Process ◽  
Optimization Study ◽  
Coagulation Performance ◽  
Acidic Conditions ◽  
Complex Organic

The evaluation of complex organic and inorganic coagulant’s performances and their relationships could compromise the surface water treatment process time and its efficiency. In this work, process optimization was investigated by comparing an eco-friendly chitosan with the industrially used coagulants namely aluminum sulfate (alum), polyaluminum chloride (PAC), and aluminum chlorohydrate (ACH) in compliance with national drinking water standards. To treat various water samples from different treatment plants with turbidity and pH ranges from 20–826.3 NTU and 5.21–6.80, respectively, 5–20 mg/L coagulant dosages were varied in the presence of aluminum, ferum, and manganese. Among all, 10 mg/L of the respective ACH and chitosan demonstrated 97% and 99% turbidity removal in addition to the removal of the metals that complies with the referred standard. However, chitosan owes fewer sensitive responses (turbidity and residual metal) with the change in its input factors (dosage and pH), especially in acidic conditions. This finding suggested its beneficial role to be used under the non-critical dosage monitoring. Meanwhile, ACH was found to perform better than chitosan only at pH > 7.4 with half dosage required. In summary, chitosan and ACH could perform equally at a different set of optimum conditions. This optimization study offers precise selections of coagulants for a practical water treatment operation.

Investigation of the Treatment Processes Effectiveness of the Surface Water at the Pilot Station and in a Technical Scale

2009 ◽  
Vol 4 (2) ◽  
Author(s):  
Adam Rak
Keyword(s):  
Water Treatment ◽  
Surface Water ◽  
Active Carbon ◽  
Treatment Process ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Technology System ◽  
Water Treatment Process ◽  
Technology Systems

The article focuses on both results of analysing the quality of the surface water taken from the reservoir and effectiveness of the water treatment process' technological examinations carried out both on a pilot station and in a technical scale. The research was carried out on the basis of the water taken from the reservoir named “Sosnowka” which is located at the Karkonosze mountain range bottom. There were 27 physical and chemical factors that underwent the examination. The effectiveness of the water treatment process was assessed basing on such factors as follows colour reduction, turbidity and such indicators as: alkalinity, total hardness, oxidability and conductivity. The 1st stage carried out throughout the water year included examining of the water treatment process' effectiveness in a pilot station in various technology systems by means of such unitary process as: sieving, pre-ozonation, pH correction, coagulation, filtration on anthracite and sand bed, final ozonation and sorption on active carbon. The other stage concerned examination carried out in a technology system in a technical scale of a new water treatment plant. The good quality of the examined water at that time (pH = 6,9; colour = 15 mgPt/L-1) allowed for using a simple technology system with the use of such processes as: sieving, pre-ozonation, filtration on anthracite and sand bed, final ozonation and sorption on active carbon and final correction of the water quality with Na2CO3 and MgCl2. The results aquired while carrying out laboratory technological examinations and those in technical scale allowed for establishing 3 optimal technology systems to be implemented while the water treatment plant operates.

COMPARATIVE STUDY ON SURFACE WATER TREATMENT USING ALUMINIUM SULPHATE AND POLYALUMINIUM CHLORIDES AS COAGULANT REAGENTS

2009 ◽  
Vol 8 (4) ◽  
pp. 859-863 ◽  
Author(s):  
Daniela Simina Stefan ◽  
Cristina Costache ◽  
Viorica Ruxandu ◽  
Monica Balas ◽  
Mircea Stefan
Keyword(s):  
Water Treatment ◽  
Surface Water ◽  
Comparative Study ◽  
Aluminium Sulphate ◽  
Surface Water Treatment

PRELIMINARY EVALUATION OF THE ENVIRONMENTAL IMPACT OF WATER TREATMENT PROCESS

2016 ◽  
Vol 15 (8) ◽  
pp. 1867-1872
Author(s):  
Florina Fabian ◽  
Silvia Fiore ◽  
Giuseppe Genon ◽  
Deborah Panepinto ◽  
Valentin Nedeff ◽  
...  
Keyword(s):  
Water Treatment ◽  
Environmental Impact ◽  
Treatment Process ◽  
Preliminary Evaluation ◽  
Water Treatment Process
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