CN100579678C - A deodorizing method for biological pretreatment of urban waste - Google Patents

Abstract

The present invention discloses deodorizing method in biological pre-treatment of city waste. Mixed deodorizing bacteria seeds, including those with the preservation numbers of CGMCC 2.1614, CGMCC 2.277, CGMCC 3.1263 and CGMCC 4.1122, are added into primarily sorted waste to deodorize. The present invention can lower the concentration of ammonia and other compound in the waste.

Description

A deodorizing method for biological pretreatment of urban waste

Technical field:

The invention belongs to the technical field of urban garbage deodorization methods, in particular to the technical field of urban garbage biological pretreatment deodorization methods.

Background technique:

With the development of the economy, more and more urban garbage, the biological recycling of garbage has become a new trend, compared with the current landfill method and garbage incineration method, the biological recycling method of garbage occupies less land and does not pollute the environment Features. Waste biological recycling mainly includes rough sorting process, bag breaking process, biological pretreatment process, primary sorting process, re-fermentation process, secondary sorting process, drying process, selection process, and organic fertilizer process. Raw garbage first undergoes a rough sorting process, separating the bamboo and wood packaging boxes and rubber tires, and breaking the large pieces; the rough sorted garbage is broken into bags, and the broken bags are subjected to biological pretreatment. Treatment, the infiltration water produced by biological pretreatment enters the sewage treatment system, and the waste gas generated enters the waste gas treatment system; the garbage that has undergone biological pretreatment is sorted once, using wind force, gravity, magnetic force, bounce, shape, speed, etc. The technology sorts out bamboo and wood, waste batteries, plastics, glass, lighters, metals, fabrics, etc. for recycling, and uses inorganic materials such as bricks, tiles and stones for the manufacture of new building materials; the garbage that has been sorted for the first time is recycled. Re-fermentation, the re-fermented garbage is sorted for the second time, and the combustibles, sand and stones, fine glass, etc. in the garbage are sorted out, and the second-sorted garbage is dried, selected, and fertilized. During the pretreatment process and the re-fermentation process, there are often foul odors. Chinese patent 03118139 provides a deodorant, a deodorizing accelerator and a method for deodorizing the composting of garbage. The deodorant and deodorizing accelerator used in it are It is the same in the biological pretreatment and re-fermentation process, because the biological pre-treatment process and the re-fermentation process are different fermentation processes, so the deodorant and accelerator are not very targeted

Invention content:

The technical problem to be solved by the present invention is to provide a highly targeted deodorization method for biological pretreatment of urban waste.

The technical solution of the present invention to solve the technical problem is: a deodorization method for biological pretreatment of urban garbage, adding mixed deodorizing bacteria to the roughly sorted garbage, and the mixed deodorizing bacteria are Chinese Buhler bombs Bullera sinensis Li CGMCC 2.1614, Rhodotorula minuta CGMCC 2.277, Rhizopus oryzae CGMCC 3.1263, Streptoverticillium morookaense CGMCC 4.1122.

The preservation units of the above-mentioned strains are China Ordinary Microorganism Culture Collection and Management Center.

China Bullera sinensis Li CGMCC 2.1614, Rhodotorula minuta CGMCC 2.277, Rhizopus oryzae CGMCC 3.1263, Streptoverticillium morookaense CGMCC 4.1122, and its expanded The mixing volume ratio of the culture solution is 1-5:1-10:3-15:1-5.

In order to enhance the deodorizing effect of biological pretreatment, Streptomyces gougerotii CGMCC 4.28 can also be added to the mixed deodorizing bacteria, which is mixed with the expanded culture medium of Bullerasinensis Li CGMCC 2.1614 in China The volume ratio is 1:1-5.

The biological pretreatment process is to add mixed strains to the raw garbage, and the mixed strains are Alcaligenes xylosoxidans subsp CGMCC 1.768, Bacillus amyloliquefaciens CGMCC 1.1177, Debaryomyces hansenii CGMCC 2.1831; Issatchenkiascutulata CGMCC 2.1592, Aleuisma keratinophilum CGMCC3.3544, Nocardia pasteurii ( Nocardia brasiliensis) CGMCC 4.1128.

Alcaligenes xylosoxidans subsp CGMCC 1.768, Bacillus amyloliquefaciens CGMCC 1.1177, Debaryomyces hansenii CGMCC 2.1831; Issatchenkiascutulata) CGMCC 2.1592, Aleuisma keratinophilum (Aleuisma keratinophilum) CGMCC3.3544, Pasteur Nocardia (Nocardia brasiliensis) CGMCC 4.1128, the volume ratio of the mixed culture solution is 10-15:5-10:10- 20: 1-30: 5-15: 10-20.

The expansion culture medium of bacterial classification used in the present invention all refers to " CGMCC bacterial classification catalogue ".

The method of using the mixed deodorizing bacteria is as follows:

Dilute the mixed deodorizing bacteria with water according to the volume ratio of 1:50-100, add the diluted mixed deodorizing bacteria according to 0.5-5% (V/W) of the weight of the garbage, and carry out fermentation according to the garbage biological pretreatment process. Can.

Compared with the prior art, the present invention utilizes a variety of bacterial groups to biologically remove the stench released during the biological pretreatment process, and can effectively reduce the concentration of ammonia compounds in the garbage gas.

Description of drawings:

Fig. 1 is a flow chart of the garbage biological recovery method of the present invention.

Detailed ways:

Below in conjunction with embodiment the present invention is described in detail.

Example 1:

Raw garbage first undergoes a rough sorting process, separating the bamboo and wood packaging boxes and rubber tires, and breaking the large pieces;

The coarsely sorted garbage is broken into bags, and the broken bags are mixed and weighed. During the mixing process, mixed bacteria are added. After the bacteria are expanded and cultivated, they are mixed according to the following volume ratio: Alcalibacter xylosoxidans Alcaligenes xylosoxidans subsp CGMCC 1.768: Bacillus amyloliquefaciens CGMCC 1.1177: Deinococcus radiodurans CGMCC 1.633: Debaryomyces hansenii CGMCC 2.1831: Issatchenkia scutulata CGMCC 2.1592, Aleuisma keratinophilum CGMCC 3.3544: Nocardia brasiliensis CGMCC 4.1128=10:5:10:1:5:10. (There are more than 2×10 ⁷ active bacteria in every milliliter of liquid).

During the mixing process, the mixed deodorizing bacteria are also added together. After the bacteria are expanded and cultivated, they are mixed according to the following volume ratio:

China Bullera sinensis Li CGMCC 2.1614, Rhodotorula minuta CGMCC 2.277, Rhizopus oryzae CGMCC 3.1263, Streptoverticillium morookaense CGMCC 4.1122, and its expanded The mixing volume ratio of the culture solution is 1:1:3:1. (There are more than 2× ¹⁰⁷ active bacteria in each milliliter of liquid)

Dilute the above two strains with water according to the volume ratio of 1:50, add the diluted mixed strains according to 0.5% (V/W) of the weight of the garbage, and ferment for 5 days with ventilation and oxygen supply, and the temperature is controlled at 40-50°C. ℃, the percolation water produced by biological pretreatment enters the sewage treatment system through the pipeline at the bottom of the fermentation tank, and the waste gas generated enters the waste gas treatment system through the pipeline at the upper part of the fermentation tank; the fermented garbage is weighed and transported to the primary sorting sorting in the system.

Example 2:

Raw garbage first undergoes a rough sorting process, separating the bamboo and wood packaging boxes and rubber tires, and breaking the large pieces;

The coarsely sorted garbage is broken into bags, and the broken bags are mixed and weighed. During the mixing process, mixed bacteria are added. After the bacteria are expanded and cultivated, they are mixed according to the following volume ratio: Alcalibacter xylosoxidans Alcaligenes xylosoxidans subsp CGMCC 1.768: Bacillus amyloliquefaciens CGMCC 1.1177: Deinococcus radiodurans CGMCC 1.633: Debaryomyces hansenii CGMCC 2.1831: Issatchenkia scutulata CGMCC 2.1592, Aleuisma keratinophilum CGMCC 3.3544: Nocardia brasiliensis CGMCC 4.1128=12:7:15:15:10:15. (There are more than 2×10 ⁷ active bacteria in every milliliter of liquid).

During the mixing process, the mixed deodorizing bacteria are also added together. After the bacteria are expanded and cultivated, they are mixed according to the following volume ratio:

China Bullera sinensis Li CGMCC 2.1614, Rhodotorula minuta CGMCC 2.277, Rhizopus oryzae CGMCC 3.1263, Streptoverticillium morookaense CGMCC 4.1122, and its expanded The mixing volume ratio of the culture solution is 3:5:10:2. (There are more than 2× ¹⁰⁷ active bacteria in each milliliter of liquid)

Dilute the above two mixed strains with water according to the volume ratio of 1:75, add the diluted mixed strains according to 2.5% (V/W) of the weight of the garbage, ventilate and supply oxygen for fermentation for 6 days, and the temperature is controlled at 40- 50°C, the infiltration water produced by biological pretreatment enters the sewage treatment system through the bottom pipeline of the fermentation tank, and the waste gas generated enters the waste gas treatment system through the pipeline on the upper part of the fermentation tank; after weighing the fermented garbage, it is transported to the primary separation sorting in the selection system,

Example 3:

Raw garbage first undergoes a rough sorting process, separating the bamboo and wood packaging boxes and rubber tires, and breaking the large pieces;

The coarsely sorted garbage is broken into bags, and the broken bags are mixed and weighed. During the mixing process, mixed bacteria are added. After the bacteria are expanded and cultivated, they are mixed according to the following volume ratio: Alcalibacter xylosoxidans Alcaligenes xylosoxidans subsp CGMCC 1.768: Bacillus amyloliquefaciens CGMCC 1.1177: Deinococcus radiodurans CGMCC 1.633: Debaryomyces hansenii CGMCC 2.1831: Issatchenkia scutulata CGMCC 2.1592, Aleuisma keratinophilum CGMCC 3.3544: Nocardia brasiliensis CGMCC 4.1128=15:10:20:30:15:20. (There are more than 2×10 ⁷ active bacteria in every milliliter of liquid).

During the mixing process, the mixed deodorizing bacteria are also added together. After the bacteria are expanded and cultivated, they are mixed according to the following volume ratio:

China Bullera sinensis Li CGMCC 2.1614, Rhodotorula minuta CGMCC 2.277, Rhizopus oryzae CGMCC 3.1263, Streptoverticillium morookaense CGMCC 4.1122, and its expanded The mixing volume ratio of culture solution is 5:10:15:10. (There are more than 2× ¹⁰⁷ active bacteria in each milliliter of liquid)

Dilute the above two mixed strains with water according to the volume ratio of 1:100, add the diluted mixed strains according to 5% (V/W) of the weight of the garbage, and ferment for 7 days with ventilation and oxygen supply, and the temperature is controlled at 40- 50°C, the waste gas generated enters the waste gas treatment system through the pipeline on the upper part of the fermentation tank; after weighing the fermented waste, it is transported to the primary sorting system for sorting,

Example 4:

In addition to adding Streptomyces gougerotii CGMCC 4.28 to the mixed deodorizing strains, the volume ratio of the expanded culture medium mixed with Chinese Bullera sinensis Li CGMCC 2.1614 is 1:1, and the rest Same as Example 2.

Example 5:

In addition to adding Streptomyces gougerotii CGMCC 4.28 to the mixed deodorizing strains, the volume ratio of the expanded culture medium mixed with Chinese Bullera sinensis Li CGMCC 2.1614 is 1:5, and the rest Same as Example 2.

The gas after the treatment of Examples 1-5 is detected, and the removal rate of ammonia reaches 85%, the removal rate of methylamine reaches 80%, and the removal rate of ethylamine reaches 82%.

Claims (2)

1, the pretreated deodorizing method of a kind of town refuse biology adds in the rubbish that ragging is crossed and mixes the deodorizing bacterial classification, it is characterized in that:

Described mixing deodorizing bacterial classification is that Chinese cloth is reined in bullet spore yeast CGMCC 2.1614, little rhodotorula CGMCC 2.277, Rhizopus oryzae CGMCC3.1263, teacher hilllock streptoverticillium CGMCC 4.1122, its volume ratio that enlarges the nutrient solution mixing is 1-5: 1-10: 3-15: 1-5.

2, the pretreated deodorizing method of a kind of town refuse biology adds in the rubbish that ragging is crossed and mixes the deodorizing bacterial classification, it is characterized in that:

Described mixing deodorizing bacterial classification is that Chinese cloth is reined in bullet spore yeast CGMCC 2.1614, little rhodotorula CGMCC 2.277, Rhizopus oryzae CGMCC3.1263, teacher hilllock streptoverticillium CGMCC 4.1122, its volume ratio that enlarges the nutrient solution mixing is 1-5: 1-10: 3-15: 1-5;

Add Gu Shi streptomycete CGMCC 4.28 at described mixing deodorizing bacterial classification, it reins in the volume ratio that the expansion nutrient solution of bullet spore yeast CGMCC 2.1614 mixes with Chinese cloth is 1: 1-5.