Method for preparing ecological bacterial fertilizer from aerobic pig manure wastewater

A pig manure and wastewater technology, applied in the directions of microorganism-based methods, fertilization methods, biochemical equipment and methods, etc., can solve the problems of limited improvement of plant growth and quality, complicated wastewater treatment process, and adverse effects on plant growth, etc. The effect of avoiding mutual interference and antagonism, low cost and low equipment requirements

Active Publication Date: 2020-12-18
CHINA AGRI UNIV +1
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Problems solved by technology

[0006]Livestock and poultry breeding sewage has the characteristics of high COD, high ammonia nitrogen content, and contains a variety of heavy metal ions. It is easy to have adverse effects on plant growth when directly used as fertilizer
In the prior art, the use of livestock and poultry breeding sewage to prepare ecological bacterial fertilizers usually requires the joint action of complex microbial systems composed of various anaerobic microorganisms such as nitrifying bacteria, various aerobic microorganisms such as Bacillus, and fungi, or through multi-stage fermentation. Treatment and preparation, strain cultivation process and wastewater treatment process are complicated and costly, and the strains and nutrient composition of the prepared ecological bacterial fertilizer have very limited effects on the growth and quality of plants, and are not suitable for large-scale application

Method used

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  • Method for preparing ecological bacterial fertilizer from aerobic pig manure wastewater
  • Method for preparing ecological bacterial fertilizer from aerobic pig manure wastewater
  • Method for preparing ecological bacterial fertilizer from aerobic pig manure wastewater

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Preparation and Application of Embodiment 1 Photosynthetic Bacteria Ecological Bacterial Fertilizer

[0048] 1. Preparation of photosynthetic bacteria ecological fertilizer

[0049] The raw material of aerobic pig manure wastewater used in this example is the effluent from the aerobic pool of the anaerobic-anoxic-aerobic three-stage wastewater treatment system for pig manure wastewater. The COD concentration is 1085mg / L and the total nitrogen concentration is 67.4 mg / L; the total phosphorus concentration is 72.9mg / L.

[0050] (1) Obtaining of pig manure wastewater raw material: After the above-mentioned pig manure wastewater raw material is centrifuged to get the supernatant, the pH is adjusted to be 6.8;

[0051] (2) Preparation and inoculation of photosynthetic bacteria seed solution: Cultivate Rhodopseudomonas palustris CGMCC NO.1.8929, Capsular Rhodobacter CGMCC NO.1.3366, and Rhodobacter sphaeroids CGMCC NO.1.5028 in the seed medium to logarithmic growth phase Ob...

Embodiment 2

[0063] The seedlings for testing are the same as in Example 1 in this example. This embodiment provides a method of using photosynthetic bacteria to prepare ecological bacterial fertilizer using the effluent of the anaerobic pool of the pig manure wastewater anaerobic-anoxic-aerobic three-stage wastewater treatment system as raw material, as follows:

[0064] The raw material of pig manure wastewater used in this example is the effluent from the aerobic pool of the pig manure wastewater anaerobic-anoxic-aerobic three-stage wastewater treatment system. The COD concentration is 1106 mg / L and the total nitrogen concentration is 66.1 mg / L. L; the total phosphorus concentration is 73.5mg / L.

[0065] (1) Obtaining of pig manure wastewater raw material: After the above-mentioned pig manure wastewater raw material is centrifuged to get the supernatant, the pH is adjusted to be 6.9;

[0066] The comprehensive treatment steps are as follows: the lettuce seedlings were transplanted in poo...

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Abstract

The invention relates to the technical field of wastewater treatment and bacterial fertilizer preparation, in particular to a method for preparing an ecological bacterial fertilizer from aerobic pig manure wastewater. The method comprises the following steps: culturing photosynthetic bacteria rhodopseudomonas palustris, rhodobacter capsulatus and rhodobacter sphaeroides by taking aerobic stage tank effluent of an anaerobic-anoxic-aerobic three-stage wastewater treatment system of pig manure wastewater as a raw material; the ecological bacterial fertilizer can be prepared from high-potassium-content aerobic pool pig manure wastewater effluent through one-time culture by compounding the same kind of bacteria, so that the degradation efficiency of organic matters, ammonia nitrogen and toxic and harmful substances in the wastewater is improved, and the method has the advantages of simple strain preparation and wastewater treatment processes, low cost and the like; the prepared ecological bacterial fertilizer is rich in various nutrient elements and photosynthetic bacteria, can significantly improve the metabolic activity of plant growth, photosynthesis and the like, quickly increases the contents of available phosphorus and available potassium in soil, effectively improves the yield and quality of plants, and improves phosphorus-deficient and potassium-deficient barren soil.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment and bacterial fertilizer preparation, in particular to a method for preparing ecological bacterial fertilizer using photosynthetic bacteria using aerobic treatment effluent in the process of aerobic pig manure wastewater treatment as a raw material. Background technique [0002] Since Japanese scientist M. Kobayashi and others discovered that photosynthetic bacteria (PSB) can purify water in the 1960s, photosynthetic bacteria have always been concerned by people. Photosynthetic bacteria are widely distributed in oceans, rivers, lakes and soils. Rhodobacter Sphaeroides, as the most widely used photosynthetic bacterial strain, is widely used in the treatment of soybean processing wastewater, sugar factory wastewater, light industrial wastewater, livestock and poultry wastewater, and the removal rate of COD can reach 70%-90%. Some extracts from photosynthetic bacteria obtained after was...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/80C05F17/20C05G5/20A01C21/00C12N1/20C12R1/01
CPCC05G3/00C05F3/00C05F17/00C12N1/20A01C21/005Y02W30/40
Inventor 卢海凤张欢何仕超沈自泉孟涛刘金辉张源辉李保明
Owner CHINA AGRI UNIV
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