Culturing device for formaldehyde degradation bacteria

Abstract

The invention belongs to the technical field of air purification equipment and particularly relates to a culturing device for formaldehyde degradation bacteria. A reaction tank which is of a box-type structure consists of a tank cover and a tank body; an air inlet pipeline reaches the bottom of the reaction tank through the tank cover; an aeration pump is arranged at the outer end of the air inlet pipeline; a swirl-mixing aerator is arranged at the inner end of the air inlet pipeline; a micro-porous biological filtering membrane is arranged at the end, close to the aeration pump, inside the air inlet pipeline; a temperature controller is arranged at the lower right part inside the tank body; a sampling hole is formed at the lower right part outside the tank body; a tail gas absorbing bottle is arranged in a central line at the top outside the tank cover; a tail gas pipeline is led out from the tail gas absorbing bottle, penetrates through the tank cover and then is provided with a tail gas collecting opening; a supplementing pipeline penetrates through the tank cover and then is provided with a valve and a supplementing opening in sequence. The culturing device is simple in structure, safe to use, convenient in preparation method, reliable in principle and low in cost, is capable of reducing the risk of exposure to surrounding people, and is applicable to screening, acclimatization and batch culture of formaldehyde degradation bacteria.

Description

Technical field: [0001] The invention belongs to the technical field of air purification equipment, and in particular relates to a formaldehyde-degrading bacteria culture device, which is used for screening and domesticating and cultivating formaldehyde-degrading bacteria in batches. The culture process does not release formaldehyde gas to the environment and reduces the exposure risk of surrounding people. Background technique: [0002] According to the information provided by the Chinese Academy of Preventive Medicine, people spend more than 80% of their time indoors, and the quality of the indoor environment directly affects people's health; The problem of indoor air pollution caused by man-made activities such as smoking and cooking cannot be ignored. Formaldehyde is one of the main substances of indoor air pollution; The formaldehyde that enters the human body combines with the protein amino group, denatures the protein, disrupts the metabolism of human cells, and has a g...

AI Technical Summary

Problems solved by technology

[0002] According to the information provided by the Chinese Academy of Preventive Medicine, people spend more than 80% of their time indoors, and the quality of the indoor environment directly affects people's health; The problem of indoor air pollution caused by man-made activities such as smoking and cooking cannot be ignored. Formaldehyde is one of the main substances of indoor air pollution; The formaldehyde that enters the human body combines with the protein amino group, denatures the protein, disrupts the metabolism of human cells, and has a great destructive effect on the cells. The 35-40% formaldehyde solution is commonly known as formalin, and is often used as a dipping specimen. Solution, formaldehyde is a highly toxic substance, ranking second on the priority list of toxic chemicals in my country. Formaldehyde was identified as a suspected carcinogen by IARC (International Agency for Research on Cancer) in 1995. The molecular structure of formaldehyde is under chemical conditions. Extremely stable, general oxidants cannot destroy its structure and eliminate its pollution

At present, the methods of removing formaldehyde mainly include chemical reaction method, physical adsorption technology, ozone negative ion technology, nano photocatalysis technology, plasma technology and plant purification, etc., but these methods have incomplete degradation, pollute the environment, long degradation time and high cost The disadvantages; microbial method is a method of removing formaldehyde that has just emerged in recent years. Foreign countries have begun the development of microbial products that degrade formaldehyde, but China has not yet started the development of this aspect. Microbial method uses organic matter and eutrophication in pollutants. The element is food, which grows and reproduces in large quantities, and accelerates the consumption of organic matter, pollutants and nutrients in pollutants, so as to completely control pollution. The specially selected microorganisms can maintain long-term activity, and use the toxic substances for decomposition as "food", quickly and in large quantities Breeding, forming a protective film of bacterial flora on the surface and shallow surface of pollutants, intercepting and killing pollutants infiltrated or volatilized from pollution sources at any time, so that it can work for a long time, because it can penetrate into pollution sources, without destroying the original material It is non-toxic and harmless, avoids harm to human health, and prevents secondary pollution of the environment; formaldehyde-degrading bacteria use formaldehyde as a carbon source, and formaldehyde in the medium is a good volatile Oxygen bacteria, the aeration and stirring process during the cultivation process will increase the volatilization speed of formaldehyde and increase the health risks of operators. At present, there are no patent documents and news reports on special cultivation devices for formaldehyde-degrading bacteria

Images