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Groundwater assessment of Narayanganj city of Bangladesh

Groundwater assessment of Narayanganj city of Bangladesh

M.I.I. Rabbi1*, P.M. Toma2

HIGHLIGHTS

  • Physicochemical quality of the groundwater in Narayanganj region was investigated.
  • Majority of the samples contain high concentrations of iron and hardness.
  • It was found that about 75% of samples have odor.
  • Many tube-wells have turbid water.
  • The groundwater in the studied area is not appropriate for drinking and household use.

ABSTRACT

Groundwater uses have escalated dramatically in Bangladesh over the past three decades, particularly for farming purposes, as large parts of the country have little access to surface water supplies. In the Narayanganj region, around 90% of the inhabitants use groundwater for drinking and household purposes. However, the majority of diseases in developing countries are caused by drinking contaminated water. Therefore, groundwater quality analysis and assessment are of utmost importance. In this study, the physicochemical quality of the groundwater supplied to Bangladesh’s Narayanganj region was investigated. A total of 25 samples were collected from different tube-wells of 12 wards among 27 wards for analysis purposes. To assess the physical and chemical contaminated content, various standard laboratory tests were performed and assimilated with WHO and BDS. Six physiochemical parameters namely pH, iron, hardness, turbidity, odor, and color were tested. By appraising the study, it was clear that the majority of the samples contain high concentrations of iron and hardness, and these samples deviated significantly from WHO and BDS standards. In terms of the odor, it was found that about 75% of samples have odor. pH of all samples dropped below the permissible limits. Many tube-wells have turbid water. Excess turbidity poses a risk to health and offers protection to pathogenic microorganisms. In the case of a few samples, the concentrations of hardness and conductivity are high too. The higher iron content can occur because of geological aquifer formation. Considering the higher concentration of these chosen parameters, the groundwater in the studied area is not appropriate for drinking and household use.

© 2020 Ababil Publishers. All rights reserved.

To cite this article: Rabbi MII, Toma PM. Groundwater assessment of Narayanganj city of Bangladesh. Journal of Desalination and Water Purification 2020;20:2-5.

To link this article: http://ababilpub.com/download/jdwp20-2/

Desalination to slake the thrust of people

Desalination to slake the thrust of people

Amimul Ahsan

Desalination provides a huge amount of potable water in many countries of the world, e.g. USA, KSA, UAE, Japan, Singapore, and Australia. The global Water Awards (GWA) declared recently the winner for 2020 Desalination Plant of the Year. That is Shoaiba 3 Exp. 2 IWP in KSA with a capacity of 250,000 m3/d. It fulfills the need of a million people in the regions of Jeddah, Makka and Taif. About $253 million plant was developed by ACWA Power with the Saudi Water Partnership Company (SWPC) [1]. It is 100% owned by the private sector as the first major infrastructure project in KSA. It reduces footprint and capital costs, while the operating cost on chemical dosing and post-treatment is minimized [1]….

© 2020 Ababil Publishers. All rights reserved.

To cite this article: Ahsan A. Desalination to slake the thrust of people. Journal of Desalination and Water Purification 2020;20:1.

To link this article: http://ababilpub.com/download/jdwp20-1/

Environmental audit of a textile effluent treatment plant in Gazipur, Bangladesh

Environmental audit of a textile effluent treatment plant in Gazipur, Bangladesh

Sk. Md. Imdadul Islam*, Mohammad Iqbal Hossain, Muhammad Raihan

HIGHLIGHTS

  • Existing condition of an ETP was observed.
  • Operational process of the ETP was evaluated.
  • Efficiency of BOD and COD removal was determined.
  • A simple but strong methodology was developed for evaluating the performance of the ETP.
  • Some techniques were suggested to augment the efficiency of the ETP.

ABSTRACT

Environmental auditing is a necessary tool for determining the impact on environment for industries or any productive sectors. Environmental auditing therefore provides a ‘snap-shot’ of looking, i.e. what is happening at that point in a certain time. The performance of the plant actually comes from the efficiency of individual units of an effluent treatment plant (ETP) and the final effluent quality. In this study, an ETP of a textile industry in Gazipur, Bangladesh was analyzed. Bangladesh is a globally renowned garment manufacturing center for its durability, quality and beauty. The textiles and garment industry contributes a lion part to the GDP. It is an initial attempt in Bangladesh to initiate the practice of environmental audit. The samples were collected from the central unit of ETP and were analyzed for the fundamental parameters, e.g. DO, BOD, COD, TSS, pH, color and turbidity. The outcomes were used to identify problems with the treatment units and to suggest modifications. Finally, a simple but strong methodology was developed for evaluating the performance of the different treatment units and the ETP as a whole. It could be implemented by ETP director so that the effluent meets the national standards and conforms to the requirements of global buyers. The audit was performed in three steps and the final outcome was prepared.

© 2020 Ababil Publishers. All rights reserved.

To cite this article: Islam SMI, Hossain MI, Raihan M. Environmental audit of a textile effluent treatment plant in Gazipur, Bangladesh. Journal of Desalination and Water Purification 2020;19:2-8.

To link this article: http://ababilpub.com/download/jdwp19-2/

Renewable energy and wastewater treatment: Environmental and economical benefits

Renewable energy and wastewater treatment: Environmental and economical benefits

Thamer Ahmad Mohammad

The main purpose of wastewater treatment plants is to control the environmental pollution particularly in natural water bodies. From energy point of view, wastewater treatment plants have high potentials for heat generation beyond common digester gas combustion. Anaerobic digestion is a popular and energy-efficient process in which microorganisms convert organic matter into biogas in the absence of oxygen. This naturally-occurring by-product can be used as a source of renewable energy, creating an incredible opportunity to convert waste into energy. The produced energy is depending on the quantity of wastewater being treated and the strength of that wastewater. Biogas can be used in boilers to produce heat, burned in cogeneration engines to produce both electricity and heat, or, in some cases, sold back to the local grid for utility credits. Biogas contains methane, a highly-flammable fuel with incredible money-saving potential….

© 2020 Ababil Publishers. All rights reserved.

To cite this article: Mohammad TA. Renewable energy and wastewater treatment: Environmental and economical benefits. Journal of Desalination and Water Purification 2020;19:1.

To link this article: http://ababilpub.com/download/jdwp19-1/