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Biological treatment method for municipal sludge

A technology of sludge treatment and municipal sludge, applied in the direction of biological sludge treatment, etc., can solve the problems of increased treatment cost, fast consumption of organic matter, secondary pollution of the environment, etc., achieve low cost, increase diversity, and eliminate harmful substances Effect

Active Publication Date: 2019-06-14
四川健全环境集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This not only increases the cost of treatment, but also causes secondary pollution to the environment due to excessive fertilization, and the organic matter applied is consumed very quickly

Method used

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  • Biological treatment method for municipal sludge
  • Biological treatment method for municipal sludge
  • Biological treatment method for municipal sludge

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The preparation method of embodiment 1 sludge treatment biological agent

[0035] 1. Composition of complex flora

[0036] 1. Compound yeast: beer yeast, sake yeast, wine yeast, and baker's yeast are compounded at a ratio of 1:1:1:1 (volume ratio).

[0037] 2. Bacillus subtilis.

[0038] 3. Beneficial recombinant Escherichia coli K12-tKtA (Eschericnia coli k-12) (purchased from China Agricultural Microorganism Culture Collection Management Center, preservation number is ACCC 03684), which has degradative effect on more than 20 kinds of heavy metal elements.

[0039] The composite flora consists of the above three bacteria in volume ratio: composite yeast: Bacillus subtilis: Escherichia coli K12-tKtA=2:1:1.

[0040] 2. Preparation method of complex flora

[0041] 1. Inject compound yeast, Bacillus, and Escherichia coli K12--tKtA into medium A in proportion.

[0042] 2. Preparation of culture medium A:

[0043] Ingredients by weight: 1000 parts of water, 200 parts of...

Embodiment 2

[0057] The compound of embodiment 2 rhizopus and the preparation and preservation of compound rhizopus preparation

[0058] 1. Compound of rhizopus group

[0059] Compound Rhizopus is composed of Rhizopus nigricans (R. nigricans), Rhizopus oryzae (R. oryzaewent etpr. Geerl), and Rhizopus arrhizus (R. arrhizus) in a ratio of 1:1:1 in the genus Rhizopus. .

[0060] Kaifeng: Clean the bottle body with 75% alcohol in absorbent cotton, heat the top bottle mouth (cover) with the flame of an alcohol lamp for about 0.5 minutes, drop a small amount of sterile water to the heated part, make it break when it is cold, and then Open with a file or tweezers.

[0061] Activation of strains: Use a sterile straw to draw 6ml of distilled water and drop it into the ampoule tube, then insert 6 grams of freeze-dried strains into the ampoule tube; shake gently to dissolve the freeze-dried bacteria into a suspension, at 6 ° C ~ 10 ° C activated under constant temperature conditions.

[0062] The...

Embodiment 3

[0077] The biological treatment of embodiment 3 municipal sludge

[0078] 1. Storage yard finishing: the municipal sludge storage yard shall be as flat as possible, the thickness of the sludge shall be about 2-3m, and the maximum thickness shall not exceed 5m. Ditches are dug around the storage yard to a depth of about 1m (separated from the outside and protected from flooding), and nets are added after slope protection around the yard to prevent landslides. During site preparation, if there are plastics and stones, they should be cleaned up and used in a centralized manner.

[0079] 2. Crush the surface layer 0.5m~1m to about 50 mesh. Simultaneously insert the sludge treatment biological agent prepared in Example 1 (inoculate 10 kilograms of sludge treatment biological agent per cubic meter and water to make the material moisture content 45% to carry out the first fermentation.

[0080] 3. Use a turning machine to turn the soil (automatically become a long strip pile with a...

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Abstract

The invention discloses a biological treatment method for municipal sludge. The invention firstly discloses a biological agent for treating sludge. The biological agent includes multiple microorganisms composed of compound saccharomycetes, bacillus subtilis and beneficial recombinant escherichia coli K-12. The invention further discloses the biological treatment method for municipal sludge. The biological treatment method comprises the following steps: (1) smashing municipal sludge surface, adding the biological agent for treating sludge provided by the invention, watering and turning over materials for performing first fermentation; (2) scattering a compound rhizopus preparation into the material after the first fermentation, performing second fermentation, and then planting pennisetum sinese. According to the biological treatment method for combining microbiological treatment with plant cultivation provided by the invention, organic content can be increased within a short period of time, harmful substances, such as heavy metal, can be degraded, the sludge can be activated, diversity of beneficial microflora in sludge can be increased, a sludge stock dump can be turned into a fertile farmland, and the problem of difficulty in treating municipal sludge can be fundamentally solved.

Description

technical field [0001] The invention relates to a treatment method of municipal sludge, which belongs to the field of biological treatment of municipal sludge. Background technique [0002] Municipal sludge refers to sludge other than domestic sludge produced by municipal sewage treatment plants. Such as: all kinds of sludge except garbage produced by municipal excavation of subways, dredging of rivers and lakes, etc. Such sludge exists in every city in China, and there are about 2 million cubic meters of it in the urban area of ​​Chengdu. This kind of sludge has various and complex components, but its common point is that it contains a lot of harmful substances and its resource utilization value is very low. Its storage yard not only occupies a large amount of land resources, but also pollutes the surrounding environment and endangers the health of residents. How to deal with this kind of sludge is a difficult point to be solved urgently. [0003] The removal of harmful...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/02
Inventor 袁登辉田茂明
Owner 四川健全环境集团有限公司
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