Method for recycling kitchen waste after salt removal

Abstract

The invention discloses a method for recycling kitchen waste after salt removal, and relates to the technical field of garbage disposal engineering. The method specifically comprises the following steps: (1) collecting the kitchen waste, performing recycling, performing sorting, and separating an oil layer in the recycled kitchen waste; (2) crushing kitchen waste generated after separation to formfine slurry; (3) performing instantaneous sterilization on the crushed slurry at high temperature of 100-120 DEG C, and adding a pH regulator into the sterilized slurry to make a pH value reach and maintained at 3.5-4.5 or 9-10; (4) electrolyzing the adjusted slurry obtained in the step 3, and electrolyzing the slurry obtained in the step 2 to form a hypochlorite; and (5) after the salt content in the kitchen waste reaches a standard value, adding a pH regulator to adjust the pH value to 6-8, and stopping electrolysis. According to the method provided by the invention, the obtained natural fertilizer can be recycled, and treated swill can meet a national emission standard in China.

Description

technical field [0001] The invention relates to the technical field of garbage treatment engineering, in particular to a method for recycling and treating kitchen garbage after desalination. Background technique [0002] Kitchen waste mainly refers to the organic waste generated in the catering industry, canteens and family cooking and dining, and generally includes leftovers, kitchen raw material scraps, melon peel and fruit scraps, etc. The main components include starch, protein, oil, dietary fiber and other organic components, which have the characteristics of high water content, high oil and salt content, and are easy to rot and smell. With the improvement and improvement of people's living standards, the amount of kitchen waste is increasing. [0003] Since food waste has three high attributes of "high moisture", "high salt" and "high fat", its first major feature is that it contains more than 75% moisture. Therefore it is difficult to carry out incineration and buri...

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to incinerate and bury, resulting in a great waste of resources and capital investment

If it can be processed locally to generate recyclable natural organic fertilizers, it will produce huge social environmental protection and economic benefits. How to convert these remaining wastes into fertilizers on the spot to meet the standards of recycling and reuse requires desalination. Garbage with salt content cannot be used as fertilizer, which will make the soil hard, which is not conducive to plant growth and development