Dissolved Oxygen Oxygen is only slightly soluble in water Dissolved oxygen levels tend to be more critical in the summer months The presence of dissolved oxygen in wastewater is desirable because it prevents the formation of noxious odors Hydrogen Sulfide Hydrogen sulfide is formed from the reduction of mineral sulfites and sul fates. This gas is a colorless, inflammable compound having the characteristic odor of rotten eggs The loss of smell can lead to a false sense of security that is very dangerous. The blackening of wastewater and sludge usually results from the formation of hydrogen sulfide various other metallic sulfides are also formed
Dissolved Oxygen Oxygen is only slightly soluble in water. Dissolved oxygen levels tend to be more critical in the summer months. The presence of dissolved oxygen in wastewater is desirable because it prevents the formation of noxious odors. Hydrogen Sulfide Hydrogen sulfide is formed from the reduction of mineral sulfites and sulfates . This gas is a colorless, inflammable compound having the characteristic odor of rotten eggs. The loss of smell can lead to a false sense of security that is very dangerous. The blackening of wastewater and sludge usually results from the formation of hydrogen sulfide .Various other metallic sulfides are also formed
Methane Methane is a colorless, odorless, combustible hydrocarbon of high fuel value Because methane is highly combustible and the expolosion hazard is high, access ports(manholes) and sewer junctions or junction chambers where there is an opportunity for gas to collect should be ventilated with a portable blower during and before the time required for operating personnel to work in them for inspection renewals, or repairs
Methane Methane is a colorless, odorless, combustible hydrocarbon of high fuel value. Because methane is highly combustible and the expolosion hazard is high, access ports (manholes) and sewer junctions or junction chambers where there is an opportunity for gas to collect should be ventilated with a portable blower during and before the time required for operating personnel to work in them for inspection renewals, or repairs
Odors Odors in domestic wastewater usually are caused by gases produced by the decomposition of organic matter or by substances added to the wastewater Industrial wastewater may contain either odorous compounds or compounds that produce odors during the process of wastewater treatment
Odors Odors in domestic wastewater usually are caused by gases produced by the decomposition of organic matter or by substances added to the wastewater. Industrial wastewater may contain either odorous compounds or compounds that produce odors during the process of wastewater treatment
Odors have been rated as the foremost concern of the public relative to the implementation of wastewater treatment facilities Within the past few years the control of odors has become a major consideration in the design and operation of wastewater collection, treatment, and disposal facilities especially with respect to the public acceptance of these facilities In many areas, projects have been rejected because of the concern over the potential for odors
Odors have been rated as the foremost concern of the public relative to the implementation of wastewater treatment facilities. Within the past few years, the control of odors has become a major consideration in the design and operation of wastewater collection, treatment, and disposal facilities, especially with respect to the public acceptance of these facilities. In many areas, projects have been rejected because of the concern over the potential for odors
Effects of odors Effects of odors is related primarily to the psychological stress rather than to the harm they do to the body Offensive odors can cause poor appetite for food, lowered water consumption, impaired respiration, nausea and vomiting, and mental perturbation, and can lead to the deterioration of personal and community pride, interfere with human relations, discourage capital investment, lower socioeconomic status, and deter growth These problems can result in a decline in market and rental property values, tax revenues, payrolls, and
Effects of Odors Effects of odors is related primarily to the psychological stress rather than to the harm they do to the body. Offensive odors can cause poor appetite for food, lowered water consumption, impaired respiration, nausea and vomiting, and mental perturbation,and can lead to the deterioration of personal and community pride, interfere with human relations, discourage capital investment, lower socioeconomic status, and deter growth. These problems can result in a decline in market and rental property values, tax revenues, payrolls, and sales