Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for improving soil fertility through kitchen waste organic acid fermentation liquor

A technology for food waste and soil improvement, which is applied in the direction of organic fertilizer, bio-organic part treatment, climate change adaptation, etc., to achieve the effect of improving community structure, increasing soil fertility, and enhancing killing effect

Inactive Publication Date: 2017-04-26
TONGJI UNIV
View PDF6 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to seek a low-cost soil improver and solve the problem of recycling food waste fermentation liquid, the present invention aims to provide a method for improving soil fertility with food waste organic acid fermentation liquid

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for improving soil fertility through kitchen waste organic acid fermentation liquor
  • Method for improving soil fertility through kitchen waste organic acid fermentation liquor
  • Method for improving soil fertility through kitchen waste organic acid fermentation liquor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Take the kitchen waste squeezed from a school cafeteria in Shanghai, remove hard objects such as bones, plastic bags, chopsticks and other sundries, weigh 200g and mix it with tap water at a ratio of 1:1 by weight and grind it with an electric mixer to obtain food waste The slurry is poured into a 500mL serum bottle, and the serum bottle stopper is connected to the injection needle to form a micro-oxygen environment.

[0029] The serum bottle was placed in a constant temperature incubator, and the temperature was controlled at 25°C. After 25 days of fermentation, the fermentation bottle was taken out, collected and filtered after centrifugal filtration, and its physical and chemical indicators were measured as shown in Table 1.

[0030] Table 1 The main properties of the food waste fermentation broth

[0031]

[0032]

Embodiment 2

[0034] Take the food waste squeezed from a school canteen in Shanghai, remove hard objects such as bones and plastic bags, chopsticks and other debris, mix it with fruit and vegetable waste at a dry weight ratio of 1:1, add 2 times the volume of water, and place it for fermentation Fermentation in the tank, using a temperature controller to control the temperature to 25 °C. After 30 days of fermentation, take out the fermentation bottle, pump into a small plate and frame filter press, the operating pressure is 0.6Mpa, the filter press time is 1 hour, the temperature is 60°C, the water content of the filter cake is 49%, the filtrate is collected, and the filter cake is passed through Return to the anaerobic fermentation tank for re-fermentation after crushing.

[0035] The filtrate is pumped into an ultrafiltration membrane separator with a membrane pore cross-sectional molecular weight of 3000 Daltons. The operating pressure of the membrane is 0.3Mpa, the temperature is 60°C,...

Embodiment 3

[0039] Establish four flower pots with a diameter of 20 cm and a height of 20 cm, add 2 kg of planting soil, rake the soil surface, moisten and air for 3 to 5 days, and then transplant the leeks with a length of 15 cm, apply the fermented liquid fertilizer prepared in Example 2 to each flower pot every day. , 5, 10, 30ml. After application, water, air and temperature management shall be carried out according to the conventional requirements. Cultured for 30 days. The growth height of leek was 6.12%, 15.33% and 27.36% higher than that of the control, respectively.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
molecular weightaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for improving the soil fertility through kitchen waste organic acid fermentation liquor, and belongs to the field of soil improvement. The method comprises the steps that firstly, kitchen waste is pretreated, and smashed after being blended with water with the solid-to-liquid ratio being 1:1-1:2, so that kitchen waste slurry is obtained; secondly, an anaerobic fermentation tank is loaded with the kitchen waste slurry for anaerobic fermentation at the room temperature, and the kitchen waste organic acid fermentation liquor is obtained; and the kitchen waste organic acid fermentation liquor in the anaerobic fermentation tank is taken out, centrifuged or press-filtered, after supernate is filterd out of a film, and a fermentation liquor liquid fertilizer is obtained and used for improving the soil fertility. Compared with the prior art, the kitchen waste used in the method is low in price and easy to obtain, and waste utilization is achieved. The fermentation liquor liquid fertilizer obtained through the method can be used for increasing the contents of nitrogen, phosphorus, potassium, amino acid, organic acid and protein in soil, enhancing the effect of killing pathogenic bacteria in the soil, improving the microbial flora structure of the soil, and improving the soil fertility. According to the fermentation liquor liquid fertilizer obtained through the method, operation is easy, and large-scale preparation can be achieved.

Description

technical field [0001] The invention belongs to the technical field of soil improvement, and in particular relates to a method for improving soil fertility with organic acid fermentation liquid of kitchen waste. Background technique [0002] Food waste is an important part of municipal solid waste, with high moisture content and organic matter content, rich in biodegradable organic matter such as fat, protein, carbohydrates and a large amount of salt, and has been considered as a waste in developed countries. Common problems in economic, social and environmental fields with developing countries. According to statistics, there are 660 cities in my country, with more than 3.5 million restaurants of various types, and 512 cities with an average daily output of kitchen waste exceeding 50 tons. Catering companies produce about 40 million tons of kitchen waste every year, which can be used The total amount of kitchen waste is 30 million tons per year. [0003] At present, anaerob...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C05F9/00C05F9/04
CPCC05F9/00C05F9/04Y02W30/40Y02A40/20
Inventor 赵由才戴世金牛冬杰柴晓利李阳郑毅
Owner TONGJI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com