Biochemical Oxygen Demand (BOD) and Seasonal Lake Health Fluctuations
Introduction:
An introduction to topic “Biochemical Oxygen Demand (BOD) and Seasonal Lake Health Fluctuations” Biochemical Oxygen Demand (BOD) is a crucial indicator of water quality and pollution in freshwater ecosystems. It reflects the amount of oxygen required by microorganisms to decompose organic matter in the presence of oxygen.
Seasonal shifts — especially in temperature, rainfall, and organic input — significantly alter BOD levels, impacting aquatic biodiversity, including fish and plankton populations. This blog post explores the scientific literature on BOD fluctuations across Indian water bodies, with insights on how summer and winter seasons influence microbial activity and oxygen depletion.
Understanding these variations helps in assessing pollution load and managing freshwater ecosystems like Bichnaiyya Lake more effectively.
Table of Contents
Excerpt Section:
BOD, which stands for “Biochemical Oxygen Demand,” is the amount of oxygen that bacteria and other microorganisms use when the conditions are aerobic.
Parekh and Gadhvi (2015) investigated BOD is higher during September and lower during February which is varied from 4.68 mg/L to 5.98 mg/L in seawater, Mithivirdi coast Bhavnagar west coast of India.
Aher and Aher (2020) reported higher BOD in the summer and lower in the winters because of presence of less amount of solid water and few numbers of microorganisms in the Godavari River, Maharashtra.
Potharaju R. and Aruna M. (2021) investigated the maximum concentration of BOD 10 mg/l in April (summer) and the minimum of 2.62 mg/l in August in Medchal Lake in Telangana.
The metabolic activity of microbes increases because of the higher temperature of the aquatic body.
Adano Aminu Ja’afar et al. (2022) described that the BOD level in the Urban River in Abuja, Nigeria, ranged from 10.00 mg/dm3 to 25.00 mg/dm3 during the dry season (summer) and from 12.00 mg/dm3 to 20.00 mg/dm3 during the wet season.
The BOD level is also higher than 0.70 to 0.90 mg/dm3 in the Anguwar Liman Area of Samaru – Zaria, Nigeria, during the dry summer season (Othman et al., 2019).
The WHO recommended permissible value 100.00 mg/dm3 for BOD of water.
Source Citation:
Researcher’s full name: Chaudhary Narendra Kumar
Title: Seasonal variations in hydrological parameters and status of fish diversity in Bichnaiyya Lake wetland of District Basti, UP, India
Guide(s): Srivastav Susmita
University: Siddharth University
Completed Date: 2024
Excerpt Page Number: Page 13
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