Evaluation of Optimal Conditions for the Application of Capillary Materials for the Purpose of Water Deironing

Трус, Інна; Radovenchyk, Іaroslav; Halysh, Vita; Krysenko, Tamara; Chuprinov, Evhen; Іванченко, А. В.

doi:10.12912/27197050/133256

Cited by 6 publications

(2 citation statements)

References 22 publications

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“…Ефективність використання коагулянтів при очищенні води в значній мірі залежить від типу хімічних допоміжних речовин, їх дози, конкретної партії стічної води [18,19]. Для досліджень використовували партію оборотних вод ПрАТ "Київський картонно-паперовий комбінат" від виробництва макулатурного картону.…”

Section: виклад основного матеріалуunclassified

Study of the Processes of Wastewater Treatment for Reuse in the Pulp and Paper Industry

HALYSH¹,

RADOVENCHYK²,

GOMELYA³

et al. 2022

Herald KhmNU.TS

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Nowadays, more than 80% of cardboard and paper products of Ukrainian mills are made from waste paper – secondary fibers that differ in their chemical and physical properties from primary cellulosic fibers. Characteristic feature of secondary fibers is the presence of a large number of small fibers, which negatively affects the quality of finished products, mass retention on the grid during the formation of paper or cardboard, which leads to pollution of wastewaters. Despite its environmental friendliness and economy, waste paper is also characterized by the presence of various pollutants, the formation of which is associated with the process of paper formation, storage of finished products, and their use. As a result of the preparation of the mass from secondary fibers, there is a transition of pollutants from the waste paper to the wastewater in the form of colloidally dispersed and soluble substances, which lead to the pollution of circulating water. Purification of water and its reuse in technological processes is an important task of paper industry mills. The results show that more than 90% of the secondary fibers have a length that does not exceed 1 mm, while in the primary cellulose fiber from coniferous wood about 53% of the fibers have a length of more than 1 mm. The high content of short fibers in the paper mass affects the processes of paper formation, worsening them, and a decrease in the retention of the fiber on the grid of the paper or cardboard machine is observed, causing the pollution of wastewater. The results of the study of coagulation of industrial wastewater with the content of suspended solids 1520 and 3200 mg/dm3 from the production of cardboard from recycling paper show that the best coagulants are A1(OH)C12 and A12(OH)5C1. The maximum efficiency of water purification of only 92.5% was achieved at the suspended solids content of 1520 mg/dm3, while for wastewater with a suspended solids concentration of 3200 mg/dm3 98.0% was obtained. To develop a scheme for deep purification of wastewaters, it is important to understand which components are removed from water more easily and which are more difficult during coagulation. For this purpose, studies on coagulation of model suspensions of starches, bentonite and kaolin using inorganic coagulants were conducted. It was established that coagulation of native corn starch suspension with inorganic coagulants is effective. However, in the case of using modified starches, the removal of cationic starches is reduced. The efficiency of water purification in the removal of bentonite by sedimentation-filtration with the use of coagulants is quite high. The degree of purification reaches 80.8-98.1%. The filtering stage allows the degree of purification to be further increased. Research on the processes of purification of model kaolin suspensions shows that mechanical and physico-chemical methods are ineffective in removing this mineral filler.

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Section: виклад основного матеріалуunclassified

Study of the Processes of Wastewater Treatment for Reuse in the Pulp and Paper Industry

HALYSH¹,

RADOVENCHYK²,

GOMELYA³

et al. 2022

Herald KhmNU.TS

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“…Recently, in industrial densely populated areas, the problem of water pollution and a sharp increase in water mineralization of surface waters has become more acute (Biggs et al 2015, Radovenchyk et al 2021, Trus et al 2017). This is caused by the discharge of mine and industrial wastewater, as well as effluents from thermal power plants (DiGiulio et al 2015, Abualhaija and Mohammad 2021, Trus and Gomelya 2021).…”

Section: Introductionmentioning

confidence: 99%

Development of Resource-Saving Technologies in the Use of Sedimentation Inhibitors for Reverse Osmosis Installations

Трус¹,

Gomelya²,

Скіба³

et al. 2022

J. Ecol. Eng.

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The processes of desalination of weakly mineralized waters using a reverse osmosis membrane were studied. The operational efficiency of membranes is limited mainly by membrane contamination. It was shown that the preliminary mechanical water purification helps to increase the productivity and selectivity of the membrane. One of the main causes of membrane contamination is the formation of carbonate deposits on their surface. One way to prevent membrane contamination is to dose antiscalants. It was established that the use of hydrolyzed polyacrylonitrile (HPAN) and hydrolyzed polyacrylamide (HPAA) as a stabilizer of scale formation is effective for concentrates of reverse osmosis desalination of water.

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Modeling and optimization of atmospheric CO2 capture for neutralization of high alkaline wastewaters using response surface methodology

Madeira,

Ribau Teixeira,

Carvalho

2024

Journal of CO2 Utilization

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Evaluation of Optimal Conditions for the Application of Capillary Materials for the Purpose of Water Deironing

Cited by 6 publications

References 22 publications

Study of the Processes of Wastewater Treatment for Reuse in the Pulp and Paper Industry

Study of the Processes of Wastewater Treatment for Reuse in the Pulp and Paper Industry

Development of Resource-Saving Technologies in the Use of Sedimentation Inhibitors for Reverse Osmosis Installations

Modeling and optimization of atmospheric CO2 capture for neutralization of high alkaline wastewaters using response surface methodology

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