Sieving and processing of kitchen waste is an important means to achieve waste reduction, resource utilization and harmlessness. By adopting advanced screening technology and other treatment methods, different components in kitchen waste can be effectively separated, and the efficiency of waste treatment and the degree of resource utilization can be improved. In the future, with the improvement of environmental awareness and the advancement of technology, the field of kitchen waste screening and processing will usher in more development opportunities and challenges.

1. Components and equipment of comprehensive kitchen waste treatment system

The comprehensive kitchen waste treatment system usually integrates multiple core processing modules, each of which has a specific function and is committed to achieving the goal of waste reduction, harmlessness and resource utilization. The following is an overview of the main equipment and functions included in the system:

The automatic feeding unit is responsible for receiving and delivering kitchen waste. Some equipment is also equipped with a weighing mechanism to accurately measure the weight of the waste to ensure accurate delivery to the subsequent processing process.

The pretreatment facility includes components such as hoppers, conveyor belts and crushers, which are used to remove large-volume debris (such as tableware, plastic bags, bones, etc.) and crush the garbage to a particle size suitable for the next step of processing.

The sorting equipment group uses tools such as sorting tables, drum screens, vibrating screens, etc. to carefully classify materials according to their different physical properties (shape, size, weight, magnetism, etc.), effectively removing non-biodegradable inorganic and metal impurities.

The dehydration system, such as a screw extrusion dehydrator or a bar screen, is mainly used to dehydrate the crushed kitchen waste, separate the solid and liquid parts, reduce the water content of the waste, and improve the subsequent processing efficiency.

The oil-water separation module specifically handles the separated liquid part, and completely separates the oil and water through the oil-water separator, so that the oil can be recovered and refined into biodiesel, and the sewage meets the emission standards after deep treatment.

The fermentation and degradation stage uses a bioreactor or fermentation tank, adds beneficial microorganisms for the biodegradation process, and converts organic waste into valuable biomass energy such as fertilizer and biogas.

The drying system connects the dehydrated solid residue for drying treatment to further reduce the moisture content, which is convenient for storage and subsequent resource reuse.

The deodorization and air purification system combines activated carbon adsorption, UV photolysis and biofilter technologies to effectively remove odorous gases generated during the treatment process and ensure the environmental quality of the treatment site.

The control system adopts a PLC automatic control system to monitor and control the operating status of each treatment unit in real time to ensure the safe and efficient operation of the entire system.

The detection and monitoring system monitors and analyzes key indicators (such as temperature, humidity, gas concentration, etc.) in the treatment process in real time, and dynamically optimizes process parameters based on data feedback.

2. The significance of kitchen waste treatment and screening

In view of the differences in kitchen waste characteristics and treatment targets in various places, corresponding equipment will be selected in actual applications. Kitchen waste treatment has far-reaching impacts on many fields such as environmental protection, resource recycling, food safety and public health, economic benefits, and implementation of laws and policies:

Environmental protection: Proper treatment of kitchen waste can avoid environmental pollution caused by it, such as water source, soil pollution and air odor; at the same time, by reducing the large amount of methane and other greenhouse gas emissions generated by the decomposition of kitchen waste, it helps to cope with global climate change.

Resource recycling: Kitchen waste is rich in organic matter. Through anaerobic digestion, composting and other technologies, it can be converted into biogas, organic fertilizer and other resources, replacing some traditional fertilizers and mineral energy, and reducing the pressure of over-exploitation of natural resources.

Food safety and public health: Scientific treatment of kitchen waste can inhibit the reproduction of bacteria and pests, reduce the risk of infectious diseases, and help promote the garbage classification system, improve the level of urban garbage management, and improve the environmental sanitation of the community.

Economic benefits: The kitchen waste treatment industry not only creates employment opportunities, but also builds a complete industrial chain covering collection, transportation, treatment and resource utilization, bringing certain economic benefits.

Legal and policy response: With the widespread implementation of household waste classification policies in various countries and regions, kitchen waste treatment has become one of the important actions to implement environmental protection laws and regulations and achieve sustainable development goals.

In summary, kitchen waste treatment is of vital importance to multiple dimensions such as environmental protection, resource recycling, public health attitudes, economic development and policy implementation.

In short, kitchen waste screening and treatment is a complex and important field that requires comprehensive consideration of technical, economic, environmental and other factors. By continuously innovating and improving processing technologies and management methods, we can better achieve the reduction, resource utilization and harmless treatment of kitchen waste and make positive contributions to environmental protection.