Water quality impact of high BOD value
BOD (biochemical oxygen demand) value is an important indicator to measure the degree of organic pollution in water bodies. When the BOD value is too high, it will have a series of negative effects on water quality and ecological environment.
1. Hypoxia in water body
A high BOD value means that there are a large amount of organic matter in the water body, which will be decomposed by microorganisms, and a large amount of dissolved oxygen will be consumed in the process. If the dissolved oxygen in the water body is over-consumed, it will cause hypoxia in the water body, which will affect the survival of aquatic organisms.
2. Black and smelly water body
Due to lack of oxygen, organic matter in the water body cannot be completely decomposed, which can easily cause the water body to become black and smelly, affecting the sensory quality of the water body, and may also have adverse effects on the surrounding environment and residents' lives.
3. Ecological imbalance
Water bodies with high BOD values will destroy the original ecological balance. Many aquatic organisms, especially those fish with high oxygen demand, may die due to lack of oxygen. In addition, the structure of the microbial community will also change, which may lead to the reproduction of harmful microorganisms.
4. Impact on water treatment effect
For sewage treatment plants, it is more difficult to treat wastewater with high BOD values, which requires more processing time and resources. If not effectively treated, wastewater with high BOD values will be directly discharged into the environment, which will aggravate water pollution and affect the self-purification capacity of water bodies.
5. Health risks
Water bodies polluted by high BOD values may contain harmful pathogens. If these water bodies are used as drinking water sources or for irrigation, they may pose a threat to human health and cause various diseases.
In summary, water quality with high BOD values will have many negative effects on the environment and human health. Therefore, monitoring and controlling the BOD value of water bodies is crucial to protecting water resources and the ecological environment.