Applying a modified aluminum sulfate solution in the processes of drinking water preparation

Dushkin, Stanislav; Shevchenko, Tamara

doi:10.15587/1729-4061.2020.210096

Cited by 8 publications

(4 citation statements)

References 9 publications

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“…Coefficient value K 2 is obtained experimentally and is 15-20 1/h. The concentration of iron in the filtrate during the iron removal from water at polystyrene foam filters with the growing layer of suspended sediment is determined by substituting equations ( 1) and (2) into equation (3).…”

Section: Resultsmentioning

confidence: 99%

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Groundwater treatment using polystyrene foam filters with upflow filtration

Martynov,

Orlova,

Zoshchuk

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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The groundwater is less susceptible to anthropogenic influence and the water quality of these sources is more stable. At the same time, the groundwater often has an increasing iron concentration. Despite the sufficient availability of proven methods for iron removal from water, it becomes necessary to search for more resource and energy saving technologies which is due to the constant rise in the cost of resources for the construction and operation of water treatment plants. The aeration methods for the iron removal from groundwater are often used, as cheaper ones. The polystyrene foam filters with upflow filtration are of particular interest, as the most reliable in operation among the developed types of filters with floating medium. A further reduction the cost of water is possible by using granules of foam polystyrene obtained by a production method, which ensures an increased grain size in comparison with the traditional method of their obtaining. The positive experience in such filters implementation allowed to recommend the placement of iron removal equipment in the existing water towers.

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Section: Resultsmentioning

confidence: 99%

“…The availability of sufficient water amount of adequate quality is one of the main factors of safe living conditions and sustainable development of the state [1,2]. However, human activity negatively affects the environment, including water resources, which leads to their significant pollution and exhaustion [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Groundwater treatment using polystyrene foam filters with upflow filtration

Martynov,

Orlova,

Zoshchuk

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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show abstract

“…Аналіз літературних даних показує, що зниження екологічної безпеки систем питного водопостачання обумовлюється такими причинами, як зменшення запасу води, погіршення якості природних вод [7,8].…”

Section: аналіз останніх досліджень і публікаційunclassified

Contact Clarifiers in Drinking Water Treatment Processes

Dushkin

2022

MEC

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The article deals with the issues of resource-saving technology in the preparation of drinking water on contact clarifiers. One of the methods of water purification from coarse and colloidal contaminants is the method of contact coagulation using aluminum sulfate coagulant. It is advisable to use contact clarifiers in single-stage treatment schemes for low-turbid colored and cloudy-colored waters, when the total content of suspended solids in the water entering the contact clarifiers, including the suspension formed as a result of introducing reagents into the water, does not exceed 150 mg/l. With a higher content of suspended matter in water, the water consumption for washing contact clarifiers increases sharply. To intensify the preparation of drinking water on contact clarifiers, a resource-saving technology is proposed using contact clarifiers using a modified aluminum sulfate coagulant solution, which makes it possible to: reduce the consumption of coagulants used in water purification, improve the quality of water clarification by weighing substances, and reduce the cost of water treatment. Theoretical prerequisites for improving the operation of contact clarifiers with a modified coagulant solution are considered. The use of a modified coagulant solution allows, without deteriorating the quality of water clarification, to reduce the calculated doses of the coagulant by an average of 25-30%, which confirms the feasibility of using a modified aluminum sulfate coagulant solution when clarifying water on contact lights. It has been established that the treatment of clarified water with a modified aluminum sulfate coagulant solution during contact coagulation makes it possible to reduce the residual aluminum content in clarified water by an average of 50-60%, the quality of water purification in terms of bacteriological and hydrobiological indicators is much higher than when treating water with a conventional coagulant solution.

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“…Перспективним методом очищення колоїднодисперсних систем є обробка їх модифікованими розчинами реагентів. Метод можна застосовувати для очищення більшості домішок колоїдного ступеня дисперсності і починає використовуватися в промисловій технології очищення природних і стічних вод [9].…”

Section: аналіз останніх досліджень і публікаційunclassified

Use of Modified Reagents Solutions When Preparing Drinking Water

Dushkin

Shevchenko

Galkina

2021

MEC

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Currently, attention is paid to the intensification of the process of natural and wastewater treatment, improvement of technology, development of new effective methods of intensification of water treatment. This will simplify the existing technology of water treatment, reduce labor-intensive processes of preparation and dosing of reagents, reduce the cost of operating treatment plants, increase their productivity, improve quality and reduce the cost of treated water. Treatment of water with a modified coagulant solution allows to increase the hydraulic size of the coagulated suspension. The strongest effect of the modified coagulant solution has on the hydraulic suspension size of 0.2 mm/s and less, i.e. the smallest and the suspension, which is difficult to remove, which creates conditions for more intensive sedimentation in settling tanks and improve the quality of water clarification and fed to fast filters. It has been experimentally determined that the treatment of water with a modified solution of aluminum sulfate coagulant should be performed when the content of suspended solids in the clarified water is up to 100–150 mg / dm3. The color of the clarified water during treatment with a modified solution of aluminum sulfate coagulant does not depend on the content of suspended solids and is 1.5-1.6 times lower than the color than when using a conventional coagulant solution. It is established that the use of a modified solution of aluminum sulfate coagulant in water purification can reduce the residual aluminum content in clarified water by an average of 50-60%. The results of researches of the modified solutions of reagents which are used at preparation of drinking water are presented. It is established that water treatment with a modified solution of aluminum sulfate coagulant allows to improve the quality of drinking water preparation by suspended solids, color, reduce the content of aluminum salts in the clarified water, thereby increasing the environmental safety of drinking water.

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Applying a modified aluminum sulfate solution in the processes of drinking water preparation

Cited by 8 publications

References 9 publications

Groundwater treatment using polystyrene foam filters with upflow filtration

Groundwater treatment using polystyrene foam filters with upflow filtration

Contact Clarifiers in Drinking Water Treatment Processes

Use of Modified Reagents Solutions When Preparing Drinking Water

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