Deodorization technology for kitchen waste

NegotiableUpdate on 02/25

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

Deodorization technology for kitchen waste $n removes harmful components. Kitchen waste contains a significant amount of organic matter, such as leftovers, vegetable roots and leaves, poultry, animals, and a certain amount of moisture. During the accumulation process, due to poor ventilation and the action of microorganisms, odor gases are produced, which are commonly referred to as garbage odor. To use odorants to undergo chemical reactions in order to achieve deodorization

Product Details

Deodorization technology for kitchen waste

Removing odor components and selecting the correct dust removal and deodorization process can avoid and reduce the impact of odors on the physical and mental health of operators and the surrounding atmospheric environment, and reduce the occurrence of complaints. Various deodorization methods have their own advantages and disadvantages, taking into account factors such as treatment effectiveness, land area, investment amount, operating costs, and operation and maintenance.

The conventional odor gas treatment process for kitchen waste treatment plants mainly includes physical, chemical, biological, and plant liquid absorption technologies, each of which has its own scope of application and advantages and disadvantages. Among them, physical deodorization technology, such as masking agent technology and spray technology, mainly uses the principle of masking or dilution diffusion to reduce the generation of odor. This technology has simple equipment and strong flexibility, but it can not remove odorous substances, and is vulnerable to the restrictions of masking agent and meteorological conditions.

Chemical deodorization technology mainly utilizes odorants to undergo chemical reactions, thereby achieving the purpose of deodorization. Chemical technology has a fast deodorization speed, but it has disadvantages such as high cost and possible secondary pollution. UV photolysis technology utilizes high-energy UV light to irradiate and decompose odorous gases. Biological deodorization technology converts odorous substances into harmless or low harmful substances through the metabolic process of microorganisms, which has the characteristics of good treatment effect, low operating cost, and no secondary pollution, but the equipment occupies a large area; Plant liquid absorption technology utilizes natural plant extracts to absorb, capture, encapsulate, and remove odorous substances through the action of airflow dynamics or vibration in the absorption equipment. It has the characteristics of flexible use, fast effectiveness, and easy management.

Deodorization technology for kitchen waste

1) Anaerobic treatment

It is currently an environmentally friendly and profitable method. The investment is relatively large, and very few produce biogas through anaerobic fermentation. Anaerobic treatment can generate a large amount of biogas, which is a clean and renewable energy source that can be used for power generation and fuel production. Due to the fully enclosed system and no odor, anaerobic treatment of kitchen waste is the future development direction.

2) Microbial treatment

The process of decomposing and utilizing organic matter in kitchen waste through the metabolic growth activities of microorganisms. The fermentation methods mainly include solid-state fermentation and liquid fermentation. Due to its low energy consumption, short cycle, and high yield, solid-state fermentation is now widely used. During the fermentation process, a large amount of odor will be generated, so deodorization facilities need to be installed in the production workshop. Generally, biological deodorization technology is used to remove odors during the fermentation process. The principle is as follows:

The biggest difference between the biological purification process of odor and wastewater is that gaseous pollutants first undergo a mass transfer process from the gas phase to the liquid phase or solid surface in the liquid film, and then the pollutants are degraded by microorganisms on the liquid or solid surface.

According to the biofilm theory, the biological treatment of odors includes three stages: gas-liquid mass transfer stage, biological adsorption and absorption stage, and biological degradation stage.

(1) Gas liquid mass transfer stage

The odorous substances in the odor come into contact with the sprayed water and dissolve in the liquid phase. Through gas-liquid mass transfer, some small molecules in the exhaust gas are transferred to the liquid phase and enter the liquid film from the gas film.

(2) Biological adsorption and absorption stage

The pollutants dissolved in the liquid phase are further diffused into the biofilm by the concentration difference, and are absorbed and captured by microorganisms as nutrients.

(3) Biodegradation stage

Organic matter absorbed by microbial cells is degraded during microbial metabolism and converted into nutrients or CO2 and H2O required for microbial growth; At the same time, the gaseous products of biochemical reactions detach from the biofilm, undergo reverse diffusion through the liquid film and gas film, and finally enter the atmosphere for emission