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New method for comprehensively utilizing food wastes

The technology of a kitchen waste and a new method, applied in the field of kitchen waste treatment, can solve the problems of complex fermentation control, low comprehensive utilization efficiency, etc., and achieve the effects of simple residue components, low production cost, and high utilization rate of raw materials

Inactive Publication Date: 2012-05-16
TAIZHOU VOCATIONAL & TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that additional catalytic enzymes need to be added during the production process, and the fermentation control is complicated, and the comprehensive utilization efficiency is low

Method used

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  • New method for comprehensively utilizing food wastes
  • New method for comprehensively utilizing food wastes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Take food waste for manual sorting, sort out large bones, metal objects, plastics, ceramics and other substances that cannot be used as fermentation raw materials, and then add 3 times the volume of water to the sorted food waste and then pass it through the pulverizer Carry out crushing and beating, and then pass through the oil-water separator to separate the oil layer and the water phase.

[0032] After weighing the grease layer obtained above, add sodium methoxide according to 1% of the weight of the grease layer, and react for 1.5 hours at a temperature of 40°C to 50°C, wash twice with water, separate layers, and distill the water phase , after drying the obtained organic layer, carry out distillation to obtain biodiesel.

[0033] Add 5% ammonia solution by the weight of the water phase to the water phase obtained above, and then use ultrasonic waves to break the crystals of the cellulose in the kitchen waste. After the end, use the obtained water phase as the fer...

Embodiment 2

[0035]Take the food waste for manual sorting, and pick out the large bones, metal objects, plastics, ceramics and other substances that cannot be used as fermentation raw materials, and then add the sorted food waste to 4 times the volume of water and grind it through the pulverizer Crush, beat, and then pass through the oil-water separator to separate the oil layer and water phase.

[0036] After weighing the grease layer obtained above, add sodium methoxide according to 0.8% of the weight of the grease layer, react for 1.0 hour at a temperature of 50°C to 70°C, wash with water three times, separate layers, and distill the water phase, The obtained organic layer is dried and then distilled to obtain biodiesel.

[0037] Add 8% ammonia solution by the weight of the water phase to the water phase obtained above, and then use ultrasonic waves to break the crystals of the cellulose in the kitchen waste. After the end, use the obtained water phase as the fermentation stock solution...

Embodiment 3

[0039] Take food waste for manual sorting, sort out large bones, metal objects, plastics, ceramics and other substances that cannot be used as fermentation raw materials, and then add 5 times the volume of water to the sorted food waste and grind it through a pulverizer Crushing and beating, and then through the oil-water separator to separate the oil layer and water phase.

[0040] After weighing the grease layer obtained above, add sodium methoxide according to 1.5% of the weight of the grease layer, and react for 1.5 hours at a temperature of 50°C, wash with water three times, separate layers, distill the water phase, and obtain the After the organic layer is dried, it is distilled to obtain biodiesel.

[0041] Add 10% ammonia solution according to the weight of the water phase to the water phase obtained above, and then use ultrasonic waves to break the crystals of the cellulose in the kitchen waste. After the end, use the obtained water phase as the fermentation stock sol...

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Abstract

The invention relates to a new method for comprehensively utilizing food wastes. The method comprises the following steps: processing the food wastes, preparing biodiesel with a grease phase, producing ethanol with a water phase through fermenting, and preparing a high protein feed with solid residue. The method has the advantages of simple technology, easy realization, food waste processing costreduction and energy saving; and the method which adopts a cofermentation technology mixing Aspergillus oryzae with Saccharomyces cerevisiae also has the advantages of high raw material utilization rate, completion of one-time fermentation, and no secondary pollution generation. The solid residue after fermentation, which has the advantages of simple component and high protein content, can be directly used as a protein feed.

Description

[0001] A new method of comprehensive utilization of kitchen waste technical field [0002] The invention relates to a method for treating kitchen waste, in particular to a new method for comprehensive utilization of kitchen waste, which belongs to the technical field of environmental protection. [0003] Background technique [0004] Food waste refers to food processing leftovers (kitchen waste) and edible residues (swill) generated in catering operations and residents’ lives. Food waste has the characteristics of high moisture content and high organic matter content, which is not suitable for traditional incineration, landfill and other methods; and the high salt content of food waste also limits its use as compost raw materials. Therefore, how to scientifically and rationally dispose and recycle food waste has become an urgent problem to be solved. [0005] The kitchen waste treatment methods in the prior art mainly include the Beijing Jiabo GBG model, the German BTA mod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11C3/10C11B13/00C10L1/02B09B3/00A23K1/10C12P7/08C12R1/865C12R1/69
CPCY02E50/13Y02E50/10Y02W30/74
Inventor 奚立民张昕欣柯中炉于红艳曹树勇闫启东
Owner TAIZHOU VOCATIONAL & TECHN COLLEGE
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