Problem Statement

· Rapid Growth, Rising Waste:
The textile sector in Bangladesh it’s going to be booming. It brings in revenue, creates jobs, and puts the country on the global fashion map. But there’s a downside that’s not talked about enough. In this textile sector huge amount of water and chemicals it uses every day and it’s growing day by day.

· Heavy use of Chemicals
During the dyeing and finishing of textile factories it`s used loads of chemicals such as- dyes, brighteners, softeners you name it. These don’t going to disappear. They end up in the wastewater and mess up the natural balance of our rivers.

· Toxic Impact on Nature and People
This polluted water flows into the rivers and lakes without proper treatment as a result bad things happening such as- Fish die, water turns dark and smelly, and over time, people nearby may develop health issues skin rashes, breathing trouble, even worse and more on.

· Existing Treatment Methods
Sure, there are methods out there to clean textile wastewater:

• Adsorption
• Photolysis
• Precipitation
• Chemical treatment
• Electrochemical processes

· Limitations of Current Technologies
The big factories may install treatment plants, but what about the smaller units? Many of them can’t afford the tech or don’t follow the rules. As a result, a large chunk of untreated or half-treated water keeps getting dumped into natural sources every single day.

· So, What Can Be Done?
Maybe it’s time we look beyond just chemicals and machines. Some implicit fixes could be:

• Low-cost biological treatments
• Strict rules that are actually enforced
• Helping small factories adopt better practices
• More awareness at all levels from owners to workers

Research Question

• The quality of textile dye wastewater is improving by treating with Azolla pinnata?
• In which concentration of textile dye wastewater, Azolla pinnata works most efficiently to enhance the water quality?

Research Objectives

• To determine the efficacy of Azolla pinnata in improving the water quality of collected textile dye wastewater.
• To determine the concentration in which Azolla pinnata performs most effectively to treat the textile dye wastewater.

Outline of the Report

The next chapters are organized as follows

• Literature Review Chapter: Literature Review Under this chapter the local and international articles which are related to the thesis topic are reviewed and summarized and the research gaps are mentioned.
• Conceptual Framework Chapter:  Conceptual framework under this section the abstract representation of the research study was delineated which is connected with the research study goal that directs the collection and analysis of data. Methodology Under this section the detail information about samples and data collection as well as the methodology of experiment and data analysis is described.
• Results & Discussion Chapter: 7 Results and Discussions Under this chapter the results obtained from the experimental work and data analysis are interpreted and discussed elaborately.
• Conclusion Chapter: Conclusion Under this chapter some conclusions are given.
• References & Appendix: All supportive document, tables, figures are listed here.

 Conclusion

Now-a-days, Aquatic Macrophyte based Systems (AMS) are a significant modern technique for treating wastewater and eliminating adverse substances. The cultures of Azolla pinnata in the wastewater that contains dye elements in it, effectively eliminated Temperature, pH, BOD, COD, EC, TSS, TDS, Turbidity, Salinity and Absorbance in comparison to the control treatment and standards for industrial waste prescribed by DoE. Furthermore, the treatments increased the dissolved oxygen (DO) level in the wastewater.

However, among the three textile dye wastewater containing treatments, the T1 (30%) have shown the most efficient results in improving all the mentioned water quality parameters. This study suggests that Azolla pinnata can be a promising agent for the treatment of textile dye wastewater; which will ultimately benefit the surface water system.