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Organic bacterium fertilizer taking sludge as raw material and preparation method thereof

A technology of organic bacteria and sludge, applied in organic fertilizers, sewage/sludge fertilizers, fertilization devices, etc., can solve the problems of small consumption, uneven technology, and increased cost.

Inactive Publication Date: 2017-07-14
上海安而信环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

(3) Utilization of building materials currently generally includes cement additives, brick making and lightweight aggregate making, etc. In addition, the use of sludge building materials also includes processes such as sludge-made biochemical fiberboards, roadbed materials, and fences. At present, there are still problems that the technology is not mature enough or the consumption volume is too small to meet the sludge discharge volume.
(4) For agricultural use, it can solve a large amount of sludge. There are many types of sludge treatment and disposal technologies, but the technologies are uneven. There is no uniform standard to guide sludge treatment, which leads to increased costs, and even worse, environmental damage. secondary pollution
[0004] Although biofloc has been known in the field of aquaculture for a long time, it has never been used in the preparation of organic bacterial fertilizer from sludge, and at the same time, there has not been any report on the composition and preparation process of this type of organic bacterial fertilizer , the application provides an organic bacterial fertilizer prepared from biological flocs combined with sludge and a preparation method thereof, the obtained organic bacterial fertilizer has excellent fertilizer efficiency

Method used

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  • Organic bacterium fertilizer taking sludge as raw material and preparation method thereof
  • Organic bacterium fertilizer taking sludge as raw material and preparation method thereof
  • Organic bacterium fertilizer taking sludge as raw material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] The preparation of embodiment 1 decomposed straw

[0073] 1. Main raw materials

[0074] 1. The first microbial agent, by weight:

[0075]

[0076] Requirements for the prepared compound bacterial agent: acid protease ≥ 2000u / g, neutral protease ≥ 10000u / g, cellulase ≥ 10000u / g, and the corresponding enzyme preparation is added to the insufficient part.

[0077] Bacillus subtilis KX-1 can survive and reproduce at 2-8°C.

[0078] 2. Volcanic rock biological agents

[0079] Volcanic rock biological preparations are made of porous and large surface area structural properties of volcanic rocks, containing a large amount of silicon, potassium, sodium, iron, magnesium, aluminum, silicon, calcium, titanium, manganese, iron, nickel, cobalt and other dozens of minerals and trace elements, as well as the chelation of heavy metals, using it as a carrier, implanting a variety of beneficial microbial flora that has been verified to be harmless to humans, animals and other orga...

Embodiment 2

[0140] The preparation of embodiment 2 biofloc

[0141] Biofloc preparation includes the following steps:

[0142] (1) The decomposed stalks obtained according to the method of Example 1 are pulverized into about 80 orders with a pulverizer to obtain decomposed stalk powder (such as figure 1 );

[0143] (2) Add 200 grams of the first microbial bacterial agent per kilogram of decomposed straw powder Add the first microbial bacterial agent to the decomposed straw powder, and then spray nitrifying bacteria and denitrifying bacteria in turn, the addition of nitrifying bacteria and denitrifying bacteria is 100ml Every kilogram of decomposed straw powder can get biofloc.

[0144] For a picture of the resulting biofloc see figure 2 .

[0145] The organic indicators of the biofloc obtained in this example and the biofloc produced by a foreign company were tested, and the results are shown in Table 4. In addition, the trace elements of the biofloc in this example were tested, and...

Embodiment 3

[0150] The preparation of embodiment 3 organic fertilizer

[0151] This example provides an organic bacterial fertilizer, in parts by weight, whose raw material formula includes 1 part of biofloc; 5 parts of sludge and 0.25 part of fermentation bacteria, wherein the biofloc is prepared according to the method in Example 2; the sludge is taken from The basic requirements for the activated sludge of the aged sludge in the urban domestic sewage treatment plant (the domestic sewage should be mainly treated by the urban sewage treatment plant (> 70%): 1. The activated sludge is selected from the aeration tank and discharged Aged sludge, and no PAC, PAM and other coagulants and flocculants were added before the filter press drying; 2. The sludge was tested for heavy metals, and the content of various heavy metals could not exceed the national standard: NY884-2012; the fermentation bacteria were A mixture composed of Bacillus subtilis KX-1 with the preservation number CCTCC NoM208057...

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Abstract

The invention provides application of biological floc to harmless treatment of sludge, organic bacterium fertilizer and a preparation method thereof. The formula of the organic bacterium fertilizer is prepared from the following raw materials: sludge, the biological floc and zymophyte, wherein the biological floc comprises composted straw powder, a first microorganism bacterium agent, nitrifying bacteria and denitrifying bacteria; the first microorganism bacterium agent comprises first bacillus subtilis and selective actinomyces; the preparation method comprises the following steps: step (1): composting and fermenting; step (2): turning over and supplementing water; step (3): fermenting again; and step (4): granulating. The biological floc is applied to waste sludge from a municipal sewage treatment plant and the waste sludge is subjected to the harmless treatment to prepare organic fertilizer; stacking, pollution and waste problems of agriculture wastes can be rapidly solved and recycling of resources can also be realized; and the prepared organic bacterium fertilizer also has unexpected fertilizer efficiency.

Description

technical field [0001] The invention belongs to the technical field of harmless treatment of sludge in sewage treatment plants, and in particular relates to the application of biological flocs in the harmless treatment of sludge in sewage treatment plants, in particular to an organic bacterial fertilizer with sludge as raw material and its preparation method. Background technique [0002] The amount of sludge discharged by my country's sewage treatment plants is increasing year by year, and the environmental pollution caused by sludge has become increasingly prominent, which has caused great safety hazards, environmental pressure and economic burden. Sludge contains a large amount of toxic and harmful substances such as heavy metals and pathogenic bacteria. Sludge that has not been treated in a safe and environmentally friendly manner is more harmful to the environment. The sludge treatment process unit mainly includes sludge concentration, dehydration, digestion, fermentat...

Claims

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Application Information

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IPC IPC(8): C05G3/04C05G3/80
CPCC05F7/00C05G3/80C05F11/00C05F11/08C05F17/40
Inventor 郭大磊柳永平
Owner 上海安而信环保科技有限公司
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