tailieunhanh - Waste Treatment in the Food Processing Industry - Chapter 9 (end)

Công nghiệp chế biến thực phẩm chiếm một vị trí quan trọng về kinh tế và tạo ra khối lượng lớn chủ yếu là chất thải có khả năng phân huỷ sinh học. Tuy nhiên, chất thải nguy hại cũng thỉnh thoảng tạo ra tùy thuộc vào tình huống như ô nhiễm bởi thuốc trừ sâu hoặc thuốc diệt cỏ, và các mầm bệnh. Thậm chí chỉ đơn giản là không cân bằng nội địa hóa có thể gây ra sự tích tụ không phù hợp hoặc sự thối rữa chất thải hữu cơ. Thực phẩm cho người sành ăn. | 9 Food Waste Treatment Masao Ukita and Tsuyoshi Imai Yamaguchi University Yamaguchi Japan Yung-Tse Hung Cleveland State University Cleveland Ohio . INTRODUCTION Food processing industries occupy an important position economically and generate large volumes of mostly biodegradable wastes. However hazardous wastes are also occasionally generated depending on situations such as contamination by pesticides or herbicides and pathogens. Even simply unbalanced localization may induce unsuitable accumulation or putrefaction of organic wastes. Discarded gourmet foods might also generate hazardous wastes. Wastes derived from food industries are categorized into three groups a manufacturing losses b food products thrown away as municipal solid waste MSW and c discarded wrappers and containers. These groups may be further divided into liquid and solid wastes. This chapter will focus on the background and issues surrounding food wastes from a structural point of view liquid wastes and wastewater treatment systems and solid wastes and hazardous wastes of the US and Japanese food industries. Although both countries are in developed stages they offer contrasting pictures of food waste treatment. Additionally several topics will be introduced regarding recent technologies relating to food wastes. These are a examples of fermentation factories b cassava starch industries c resource recovery by UASB up-flow anaerobic sludge bed reactor or EGSB extended granular sludge bed reactor d reduction and reuse of wastewater e zero-emission of beer breweries and f technology for garbage recycling. STRUCTURAL POINT OF VIEW The recycling of food wastes should be considered as part of the long-term sustainability of agriculture. As Japan is a typical island state the undesirable influence of oversea-dependent food production has become obvious. Although free trade systems are commonly accepted in the world today reconsideration of them may be necessary concerning food and feed from .