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Method for preparing high-quality biological organic fertilizer through municipal sewage sludge

A technology of urban domestic sludge and bio-organic fertilizer, applied in the application, fertilization device, fertilizer mixture and other directions, can solve the problems of high content of harmful organisms, poor fertilizer efficiency, low content of organic matter, etc. Low content, the effect of improving soil

Inactive Publication Date: 2015-11-25
SHANDONG WOKEQI IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention patent with the patent number of 201310277347.6 discloses a method of using urban domestic sludge to produce bio-organic fertilizer and its special starter, but the starter provided by this invention can only achieve some preliminary sludge harmless treatment, and the prepared biological The quality of organic fertilizer is poor, and it cannot play the role of many nutrients in the sludge well
[0005] The method for preparing bio-organic fertilizer from municipal domestic sludge in the prior art has the following defects: (1) the content of harmful organisms is high, especially the mortality rate of fecal coliform bacteria and roundworm eggs is low; (2) the number of effective viable bacteria is low , the survival rate of beneficial microorganisms is low; (3) the content of organic matter is low, and the content of heavy metal chromium is high; (4) when used in planting, the fertilizer efficiency is poor, and the planting effect is not good

Method used

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  • Method for preparing high-quality biological organic fertilizer through municipal sewage sludge
  • Method for preparing high-quality biological organic fertilizer through municipal sewage sludge
  • Method for preparing high-quality biological organic fertilizer through municipal sewage sludge

Examples

Experimental program
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Embodiment 1

[0029] Embodiment 1 A kind of method utilizing municipal domestic sludge to prepare high-quality bio-organic fertilizer

[0030] Described method comprises the following steps:

[0031] Step 1. Raw material preparation

[0032] Main material: municipal domestic sludge;

[0033] Accessory materials: straw powder, wax gourd peel powder, sea asparagus powder, quicklime powder;

[0034] The water content of the municipal domestic sludge is 70% (mass percentage);

[0035] The fineness of the straw powder is 50 mesh;

[0036] The water content of the wax gourd peel powder is 13%, and the fineness is 100 mesh;

[0037] The fineness of the sea asparagus powder is 120 mesh;

[0038] The fineness of the quicklime powder is 80 mesh.

[0039] Step 2, preparation of fermented material

[0040] Mix the prepared raw materials according to the following weight ratio: municipal domestic sludge: straw powder: wax gourd skin powder: sea asparagus powder: quicklime powder=100:10:13:10:5;...

Embodiment 2

[0056] Embodiment 2 A kind of method utilizing municipal domestic sludge to prepare high-quality bio-organic fertilizer

[0057] Step 1. Raw material preparation

[0058] Step 2, preparation of fermented material

[0059] Step 3. Sterilization

[0060] The above-mentioned steps are all operated according to the method of Example 1.

[0061] Step 4, anaerobic fermentation

[0062] Operate by the anaerobic fermentation step of embodiment 1, only change the anaerobic fermentation agent that uses;

[0063] The anaerobic leavening agent that embodiment 2 uses is solid powder, is carrier with potato starch, contains following microorganism: micrococcus methane thermophiles 13 * 10 9 CFU / g, Lactobacillus plantarum 9×10 9 CFU / g, Thermoanaerobacterium metalophilus 8.5×10 9 CFU / g, white high temperature actinomycetes 5.8×10 9 CFU / g.

[0064] Step 5. Add fermentation aids

[0065] Operate by adding the fermentation aid step of embodiment 1, only change the fermentation aid use...

Embodiment 3

[0072] Embodiment 3 A kind of method utilizing municipal domestic sludge to prepare high-quality bio-organic fertilizer

[0073] Step 1. Raw material preparation

[0074] Step 2, preparation of fermented material

[0075] Step 3. Sterilization

[0076] The above-mentioned steps are all operated according to the method of Example 1.

[0077] Step 4, anaerobic fermentation

[0078] Operate by the anaerobic fermentation step of embodiment 1, only change the anaerobic fermentation agent that uses;

[0079] The anaerobic leavening agent that embodiment 3 uses is solid powder, is carrier with potato starch, contains following microorganism: micrococcus methane thermophiles 15 * 10 9 CFU / g, Lactobacillus plantarum 10×10 9 CFU / g, Metalophilic Thermoanaerobacteria 8.9×10 9 CFU / g, white thermoactinomycetes 6.3×10 9 CFU / g.

[0080] Step 5. Add fermentation aids

[0081] Operate by adding the fermentation aid step of embodiment 1, only change the fermentation aid used;

[0082...

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Abstract

The invention provides a method for preparing high-quality biological organic fertilizer through municipal sewage sludge. The method includes the steps of raw material preparing, fermented material preparing, sterilization, anaerobic fermentation, fermentation promoter injection, aerobic fermentation and finished product preparing. Anaerobic fermentation agents used in the anaerobic fermentation step contain methane thermophilic micrococcocci, lactobacillus planetarium, metallophilic thermoanaerobacter ethanolicus and white high-temperature actinomycetes. Aerobic fermentation agents used in the aerobic fermentation step contain trichoderma reese, lactobacillus delbruckii and vibrio proteolyticus. According to the prepared bio-organic fertilizer, the number of fecal coliform bacteria ranges from 23 to 26 per g, the death rate of ova of roundworm ranges from 99.2% to 99.8%, and the number of effective living bacteria ranges from 440 millions CPF / g to 52 millions CPF / g.

Description

technical field [0001] The invention belongs to the field of crop fertilizers, in particular to a method for preparing high-quality bio-organic fertilizers from urban domestic sludge. Background technique [0002] Municipal domestic sludge is the sludge discharged after urban domestic sewage treatment. These sludges are highly viscous, eutrophic, smelly and unpleasant, and contain a large number of harmful microorganisms; the treatment and disposal technology of urban domestic sludge has just started in my country , Secondary pollution caused by direct discharge of sludge must be given full attention. [0003] my country's traditional sludge treatment methods require large investment, low load, and difficult operation and management. How to effectively utilize urban domestic sludge, eliminate pollution, and turn waste into wealth is an important direction of current research. [0004] The invention patent with the patent number of 201310277347.6 discloses a method of using ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/04C05G3/80
Inventor 卢洪亮彭志强张连鹏郭学阳
Owner SHANDONG WOKEQI IND CO LTD
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