Table of Contents
How can BOD affect pH?
Abnormal or irregular pH in biological treatment processes can result in a significant decrease in the rate of removal of organic compounds from the environment, which will affect the biochemical oxygen demand (BOD) measurements. pH approximates the concentration of hydrogen ions in a solution.
What happens when BOD increases?
The greater the BOD, the more rapidly oxygen is depleted in the stream. This means less oxygen is available to higher forms of aquatic life. The consequences of high BOD are the same as those for low dissolved oxygen: aquatic organisms become stressed, suffocate, and die.
What affects BOD in water?
Biological oxygen demand directly affects the amount of dissolved oxygen in rivers and streams. The rate of oxygen consumption is affected by a number of variables: temperature, pH, the presence of certain kinds of microorganisms, and the type of organic and inorganic material in the water.
What is the importance of BOD in water?
The BOD is an important parameter for assessing water quality. It deals with the amount of oxygen consumption (mg O2 L− 1) by aerobic biological organisms to oxidize organic compounds. Sewage with high BOD can cause a decrease in oxygen of receiving waters, which in turn can cause the death of some organism.
What causes low pH in wastewater?
If the influent pH is satisfactory, then the low effluent pH is usually caused by nitrification in combination with low natural alkalinity in the wastewater.
What causes high pH in wastewater?
Causes of High pH Levels in Water In general, chemicals, minerals, pollutants, soil or bedrock composition, and any other contaminants that interact with a water supply will create an imbalance in the water’s natural pH of 7. In short, environmental factors are the biggest contributor to water pH, whether high or low.
What is BOD and its environmental significance?
BOD measures the amount of oxygen consumed by microorganisms for the process of decomposition of the organic matters in the water bodies. It indicates the amount of organic pollution present in an aquatic ecosystem. BOD also measures the chemical oxidation (COD) of inorganic matter.
What causes high pH in wastewater effluent?
A low or decreasing pH is often caused by low dissolved oxygen (DO) or organic overloading. Algal activity is responsible for most of the variation in the lagoon; in fact, high effluent pH is almost always attributed to algae.
How does pH increase in wastewater?
Certain basic or alkaline chemicals used to raise wastewater pH are below: CaO (calcium oxide or lime), MgO (magnesium oxide), Ca (OH) (calcium hydroxide, a hydrated form of lime) or Mg (OH) (magnesium hydroxide) are the most commonly used chemicals because of availability, low cost, and high capacity.
What is the effect of BOD on dissolved oxygen?
BOD directly affects the amount of dissolved oxygen in rivers and streams. The rate of oxygen consumption is affected by a number of variables: temperature, pH, the presence of certain kinds of microorganisms, and the type of organic and inorganic material in the water. The greater the BOD, the more rapidly oxygen is depleted in the stream.
How does an unbalanced pH affect the body?
How an Unbalanced pH Affects the Body Having excess or deficient levels acidity can affect every system within the body, as well as its physical structures.
What happens when BOD is high or low?
The greater the BOD, the more rapidly oxygen is depleted in the stream. This means less oxygen is available to higher forms of aquatic life. The consequences of high BOD are the same as those for low dissolved oxygen: aquatic organisms become stressed, suffocate, and die.
What is the importance of pH balance in the body?
Restoring pH Balance in the Body. A pH balance is the ratio of acidity to basicity. In humans, one of the most important factors in determining pH levels is diet. Eating too many acidic foods can lead to conditions like diabetes and chronic kidney disease, among others.