Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Development of Wastewater Reuse System to Eliminate the Risk of Microbial Infection and Toxicity to Fish

Israt Aman Aurpa
Department of Fisheries & Marine Bioscience, Jessore University of Science & Technology, Jessore-7400, Bangladesh.

Md. Mer Mosharraf Hossain
Assistant Professor
Department of Fisheries and Marine Bioscience, Jessore University of Science and Technology, Jessore-7408, Bangladesh.

Md. Hasan-Uj-Jaman
Department of Fisheries & Marine Bioscience, Jessore University of Science & Technology, Jessore-7400, Bangladesh.

Hironmoy Sovon Roy
Department of Fisheries & Marine Bioscience, Jessore University of Science & Technology, Jessore-7400, Bangladesh

Hafeza Sultana Rosny
Department of Fisheries & Marine Bioscience, Jessore University of Science & Technology, Jessore-7400, Bangladesh.

Shoumo Khondoker
Department of Fisheries & Marine Bioscience, Jessore University of Science & Technology, Jessore-7400, Bangladesh.

Abstract/ Executive Summary:

The Recirculating Aquaculture Systems (RAS) with a biological filter is the most noticeable representative which treats internally the water polluted with dissolved organics and ammonia. It also decreases the amount of water use. This study showed lower microbial content and lesser toxic element in treated water than non-treated water. Among the treatment 1, 2 and 3, treatment 3 showed lower microbial content; Aeromonus, Pseudomonus (20 × 10-4 CFUml-1, 30 × 10-3 CFUml-1) with low toxic elements; total ammonia nitrogen concentration 0.69 ± 0.3 gm, Nitrite-N concentration 2.1±1.5 gm, Nitrate 0.69 mg/L, CO2 5- 10 mg/L, pH 7.16 ± 0.14 than other treatments 1 (35 × 10 CFU ml-1 , 45 × 10-3 CFUml-1) and treatment 2 (50 × 10 CFUml-1 , 30 × 10 CFUml-1). Usually maximum microbial content; Aeromonus, Pseudomonus (250 × 10³ CFUml-1, 190 × 10³ CFUml-1) and maximum toxic effect (total ammonia nitrogen concentration 1.20 gm-3 , Nitrite-N concentration 6.66 gm/³, Nitrate 5.0 mg/L, CO2 15 mg/L, pH 7.48) was observed in the control condition (Non-treated water). This study indicates that the wastewater treatment using biological filter in case of microbial infection and toxic elements. Contents difference has the potentiality to fish production in aquaculture industry.

Keywords: Recirculating aquaculture systems (RAS), Biological filters, Toxicity, Microbial infection, Total Ammonia Nitrogen (TAN), Dissolve organic substance.

Location: Laboratory of Fisheries & Marine Bioscience department

Start Date: 00-03-2015

End Date: 00-05-2015

Program Area: Resource Development and Management

Commodity: Poison, Water pollution

Objectives:

Usually, in a Recirculating Aquaculture Systems (RAS), autotrophic nitrifying bacteria (AB) remove ammonia at and maintain a sufficient rate of water quality at a level adequate and prevent ammonia toxicity to the fish (Zhu and Chen, 1999). There are three ways to deal with this problem. By removing most of the carbonaceous BOD (biochemical oxygen demand) before the water enters, providing sufficient extra capacity and having a very long plug flow path through the biofilter. So the aim of this study is to reduce the risk of toxicity affect and microbial infection of fish.

Methodology:

2.1. Technical feasibility The experimental tests were conducted on the laboratory of Fisheries & Marine Bioscience department to March to May, 2015. The technical feasibility of the water reuse system was evaluated in terms of eliminate the risk of microbial infection and toxicity to fish by using biological filter. Four identical biological filters filled with a pre-colonized packing media (gravels, marbel rock, pebbels, coarse sand, charcoal, cotton, net) were used. The filters functioned in parallel and received the same influent water quality, constituted from heated (20±1 °C), sand-filtered. The pH remained between 7.5 and 8.

Source of Information: International Journal of Fisheries and Aquatic Studies 2016; 4(2): 186-190

Article Link (Online Journal): DOI: https://doi.org/10.22271/fish.2016.v4.i2c.687

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Water treatment technology has seen a dynamic development in recent years with new treatment methods rapidly emerging. This study shows that the water re-use system or recirculating water system (RAS) for the removal of microbial content and toxicity from water, is technically feasible and environmentally friendly which is the most unique and important feature of this system.

Knowledge Management: Journal