Source of sewage and waste gas
(1) the peculiar smell waste gas of the sewage treatment station mainly comes from the grid room and anaerobic organism of sewage pretreatment, the latter has a large amount of peculiar smell waste gas and a pungent taste.
(2) in the process of anaerobic reaction of wastewater through anaerobic biological process, odor waste gas such as small molecule hydrocarbon, methane, hydrogen sulfide, ammonia, methylmercaptan and a small amount of volatile organic waste gas in wastewater are produced. These components not only stimulate the taste, but also have toxicity.
Composition of waste water and gas
(1) hydrogen sulfide
Colorless, stinky egg odor gas, soluble in water and ethanol, flammable, strong nerve poison, serious damage to the central nervous system, respiratory system and myocardial. Inflammable, it can cause combustion and explosion in case of open fire and high heat.
The irritating odor is colorless gas, which is very soluble in water. Ammonia water is corrosive to metals. Ammonia poisoning will inhibit the central nervous system, and there will be muscle random excitation, angle bow reflex and convulsion.
Inflammable. Steam and air can form explosive mixture. In case of heat source, open fire, etc., there is a risk of combustion and explosion. It reacts with water and steam to produce toxic and flammable gas. After absorption, it can cause headache, nausea and different degrees of anesthesia. High concentration inhalation can cause respiratory paralysis and death.