ewce09.azraftaohid.me/L3T2/GERM 352/2026-01-22, 2026-01-26, 2026-01-29/Research Methodology.md

Created: 2026/01/22 09:31 share_link: https://notesx.azraftaohid.me/tku24rym share_updated: 2026-01-28T21:50:03+06:00

Title: Low-Cost Household-scale Greywater Treatment Solutions Applicable to Dhaka City Region

Subject paper: A Critical Analysis of Feasibility of Mixing Waste Water in Cement Mortar and Concrete

Methodology

1. Materials: 53 Grade OPC, Fine Aggregate, Wastewater and distilled water
2. Data collection:
   1. Existing standards
      1. Current limits of polluting substances in blending water
   2. Sand
      1. Collected pre-sampled, from Tamilnadu Minerals Ltd
      2. Laboratory testing of i) grain-size analysis, ii) specific gravity, iii) adsorption, iv) bulk density
   3. Wastewater
      1. Collected from 14 treatment plants
      2. Laboratory testing of i) alkalinity, ii) acidity, iii) chloride content, iv) sulphate content, v) solidsin (total, organic, inorganic solids), vii) pH
   4. Concrete
      1. Experimented concrete mixture procedure
      2. Laboratory testing of i) setting time, ii) normal consistency, iii) compressive strength test, and iv) flexural strength test
3. Data analysis:
   1. Sand
      1. Experimental data analysis: particle size distribution curve
   2. Concrete
      1. Experimental data analysis: i) effect on normal consistency, ii) change in strength (3 days, 7 days, 28 days, 90 days), iii) effect on setting time, iv) change in flexural strength (3 days, 7 days, 28 days, 90 days), v) x-ray diffraction analysis (28 days)

Subject paper: Greywater reuse as a key enabler for improving urban wastewater management

Methodology:

1. Materials:
   1. Computer
2. Data collection:
   1. From existing studies and standards
      1. Characteristics of mixed grey-water from existing publishings and papers
         1. Microbial compositions
         2. Organic matters
         3. Xenobiotics
      2. Papers on the analysis of existing technologies of treatment
         1. Biochemical technologies
         2. Physio-chemical technologies
         3. Nature based solutions
      3. Legal aspect
   2. Surveys
      1. Consumer perspective on installations
   3. Energy cosumptions
      1. Household level
      2. Centralized water management system
      3. Grey water treatment technology based
3. Data analysis:
   1. Classification of energy consumptions
   2. Energy recovery
      1. In terms of decentralized greywater reuse system and centralized water management system
      2. Within various reuse systems
   3. Assessment
      1. Within various reuse systems

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