Physico-Chemical Waste Water Treatment Technologies: An Overview

Bhargava, Akshey

doi:10.18535/ijsre/v4i05.05

Cited by 26 publications

(15 citation statements)

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“…The technology of industrial wastewater treatment uses both mechanical and physicochemical methods as well as biological ones (Figure 1) (Bhargava 2016).…”

Section: Wastewater Treatment Methodsmentioning

confidence: 99%

Wastewater Treatment Methods for Effluents from the Confectionery Industry – an Overview

Zajda¹,

Aleksander-Kwaterczak²

2019

J. Ecol. Eng.

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Wastewater from the confectionery industry is characterized by daily and seasonal variability of composition and quantity which adversely affects the process of their disposal. Confectionery plants discharge about 300-500 m 3 per month of technological wastewater. Sewage from the confectionery industry belongs to biologically degradable. It is characterized by high values of chemical oxygen demand (COD) and biological oxygen demand (BOD). The article reviews various methods used to treat wastewater from the confectionery industry. Attention was paid to the applicability of a particular method, its advantages and disadvantages and the costs of implementation. The technology of industrial wastewater treatment uses both mechanical and physicochemical methods as well as biological ones. Techniques of sewage treatment usually consist of several stages which use different processes. Low-cost materials such as natural minerals, agricultural waste, industrial waste, biosorbents, and others contribute to the improvement of aerobic sewage conditions. The main weakness of typical sewage treatment plants is their large area, high investment, and exploitation costs. Therefore, a good solution may be the use of the membrane biological reactor which combines the classical technique of activated sludge and filtration on micro-filtering membranes.

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“…The technology of industrial wastewater treatment uses both mechanical and physicochemical methods as well as biological ones (Figure 1) (Bhargava 2016).…”

Section: Wastewater Treatment Methodsmentioning

confidence: 99%

Wastewater Treatment Methods for Effluents from the Confectionery Industry – an Overview

Zajda¹,

Aleksander-Kwaterczak²

2019

J. Ecol. Eng.

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“…They are always used in conjunction with physical and biological treatment processes. The inherent disadvantage of chemical treatment process compared to physical treatment is seen in their additive nature (Bhargava, 2016). This often increases the dissolved constituents of the reclaimed water; this is, at times, accompanied with slight color and taste change.…”

Section: Verified Methods Of Wastewater Treatmentmentioning

confidence: 99%

Prospects of Wastewater Reclamation and Reuse for Water Scarcity Mitigation and Environmental Pollution Control in Sub-Saharan Africa

Alawode

Ogedengbe

Afolayan

et al. 2019

EMSD

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This paper discusses wastewater and proven techniques for wastewater remediation and reuses from the sub-Saharan Africa (SSA) perspective. Water scarcity and polluted water sources contribute to the death of a large population of people daily; most of whom are living in SSA. The vast availability of non-recycled wastewater and poor waste management infrastructures in SSA is the major contributing factor to environmental degradation and water pollution. In this paper, the challenges confronting wastewater treatment and reuse towards improving water resource management in SSA are discussed. One major issue identified in this work is the socio-cultural perception of people in SSA to the emerging trend of wastewater reuse for water resource conservation and management. One recognized approach by which wastewater reuse can be encouraged in SSA is by validating the quality of the reclaimed water through public sensitization. Another method is by introducing incentives that will motivate public acceptability of recycled water from wastewater treatment.

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“…Процесу гідролізу піддаються коагулянти, що утворюють гідроксиди, які є слабкими електролітами, і мають невисокі значення ступеня дисоціації -α<2%, в порівнянні з сильними електролітами -α>30%). Відповідно гідроліз солей заліза [20] повинен протікати повніше, ніж солей алюмінію і заліза [19], бо ДР(Fе(ОН)3) = 3.8 10 -38 , а ДР(А1(ОН)з) = 1.9 10 -33 , ДР(Fе(ОН)2) = 6.3 10 -16 [13].…”

Section: вступunclassified

“…За низьких температур у зимову пору року очищення води алюміній (ІІІ) сульфатом протікає незадовільно: процеси утворення пластівців й їх осадження сповільнюються; пластівці утворюються дуже дрібні; в очищеній воді з'являється помітна кількість залишкового алюмінію. Збільшення кількості солей Феруму [20] у складі змішаного коагулянту дозволяє зменшити негативні наслідки гідролізу алюмінію [19; 33].…”

Section: вступunclassified

Розробка Технології Одержання Коагулянту З Основного Відходу Титанового Виробництва

Barsukova¹,

Savchenko-Pererva²

2021

J. of Chem. and Tech.

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The study investigated the production of a mixed coagulant as a target product when utilizing ferrous sulfate, which negatively affects the technogenic load of the environment. Iron vitriol, in the form of large-tonnage acid waste of titanium production, is identified with a number of hazardous, producing environmental problems in places where enterprises for its manufacture are located. Due to the fact that in its composition it contains free sulfuric acid, solutions of which through underground waters fall on large areas of land, the structure of the soil changes. Contamination occurs with titanium and chromium ions, which are part of the waste. A common method of artificial clarification and discoloration of water, in which the color of water is increased, is the use of coagulants: aluminum sulfate Al2(SO4)3, aluminum chloride AlCl3, iron (II) sulfate FeSO4 and iron (III) sulfate Fe2(SO4)3, aluminum chloride pent hydroxide Аl2(ОН)5Сl, sodium aluminum oxide NaАlО2 and others, which form poorly soluble metal hydroxides Аl(ОН)3 and Fe(ОН)3 as a result of hydrolysis. The aim of the work is to develop a technology for the utilization of ferrous sulfate to obtain a mixed coagulant that will reduce the technogenic load. To achieve this goal, prototypes of a mixed coagulant with a different ratio of substances useful for coagulation (Аl2O3/Fe2O3) have been developed.

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Physico-Chemical Waste Water Treatment Technologies: An Overview

Cited by 26 publications

References 0 publications

Wastewater Treatment Methods for Effluents from the Confectionery Industry – an Overview

Wastewater Treatment Methods for Effluents from the Confectionery Industry – an Overview

Prospects of Wastewater Reclamation and Reuse for Water Scarcity Mitigation and Environmental Pollution Control in Sub-Saharan Africa

Розробка Технології Одержання Коагулянту З Основного Відходу Титанового Виробництва

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