The components, equipment, and functions of the kitchen waste treatment system

Food waste screening and processing play a crucial role in realizing the objectives of waste reduction, resource utilization, and harmlessness. By adopting advanced screening technologies and other treatment methods, it effectively separates various components in food waste, enhancing the efficiency of waste management and increasing the degree of resource recovery. In the future, with heightened environmental awareness and advancing technology, the field of food waste screening and processing will witness more opportunities and challenges.

Intermediate production Trommel Screen

I. Composition of Integrated Kitchen Waste Processing System An integrated kitchen waste processing system typically integrates several core processing modules, each fulfilling specific functions aimed at attaining waste reduction, harmlessness, and resource utilization. The following outlines the main equipment and their functionalities:

Automatic feeding units are responsible for receiving and conveying food waste. Some machines also feature weighing mechanisms to accurately measure waste quantities, ensuring precise delivery to subsequent processing stages.

Pretreatment facilities consist of hoppers, conveyors, and crushers that remove bulky items like tableware, plastic bags, and bones, and crush the waste to a size suitable for further processing.

Sorting equipment uses sorting tables, drum screens, and vibrating screens to meticulously categorize materials based on their physical properties such as form, size, weight, and magnetism, effectively eliminating non-biodegradable inorganic substances and metal impurities.

Dewatering systems, such as screw presses or bar grate screens, primarily serve to dehydrate crushed food waste, separating solid and liquid fractions to reduce moisture content and enhance the efficiency of later treatments.

Oil-water separation modules specialize in treating the separated liquid part, thoroughly dividing oils and water via oil-water separators, allowing the oil to be recovered and refined into biodiesel while wastewater undergoes deep treatment before being discharged according to standards.

Fermentation degradation employs bioreactors or fermentation tanks where beneficial microorganisms facilitate the biological decomposition process, transforming organic waste into fertilizers, biogas, and other valuable biomass energy.

Drying systems dry the solid residue after dewatering, further reducing moisture levels for convenient storage and subsequent resource recycling.

Odor control and air purification combine activated carbon adsorption, UV photolysis, and biofilters to effectively eliminate odorous gases produced during the processing, ensuring high-quality environmental conditions at the processing site.

Control systems use PLC automatic control systems to monitor and regulate the operating status of each processing unit, guaranteeing the overall safety and efficiency of the system.

Monitoring and control systems continually monitor and analyze critical indicators throughout the processing (e.g., temperature, humidity, gas concentration), dynamically optimizing process parameters based on data feedback.

II. Significance of Food Waste Screening and Processing Given the varying characteristics of food waste and processing targets across regions, practical applications may require configuring appropriate equipment. Food waste processing has profound implications in multiple domains, including environmental protection, resource recycling, food safety and public health, economic benefits, and legal and policy implementation:

Environmental Protection: Properly managing food waste helps prevent environmental pollution from sources like water, soil contamination, and foul air. Moreover, processing food waste reduces the emission of large amounts of methane, a potent greenhouse gas, contributing to global climate change mitigation.

Resource Cycling: Rich in organic matter, food waste can be transformed into resources like biogas and organic fertilizers through anaerobic digestion and composting techniques, replacing some traditional chemical fertilizers and mineral energies, thereby reducing the pressure on excessive exploitation of natural resources.

Food Safety and Public Health: Scientifically treating food waste curbs the proliferation of pathogens and pests, lowering the risk of infectious diseases. Furthermore, it promotes垃圾分类 practices, enhances urban waste management standards, and improves community and city hygiene conditions.

Economic Benefits: The food waste processing industry not only generates job opportunities but also establishes a complete industrial chain encompassing collection, transportation, processing, and resource utilization, generating certain economic returns.

Legal and Policy Response: With widespread promotion of household waste sorting policies across countries and regions, food waste processing has become a pivotal action in complying with environmental regulations and achieving sustainability goals.

In conclusion, food waste processing is of paramount importance in terms of environmental conservation, resource recycling, public health maintenance, economic development, and policy enforcement.

Overall, food waste screening and processing constitute a complex yet significant domain, necessitating consideration of multiple factors such as technology, economics, and the environment. By continuously innovating and refining processing technologies and management approaches, we can better achieve the goals of waste reduction, resource utilization, and harmlessness in food waste treatment, ma