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Composite biological bacterial fertilizer for petroleum-contaminated soil and preparation method thereof

A technology of complex biological bacteria and oil pollution, applied in the field of fertilizers, can solve the problems of low nutrient absorption, slow crop growth, low economic efficiency, etc., and achieve the effects of promoting degradation, promoting dispersion, and reducing losses

Pending Publication Date: 2021-01-15
贵州盈丰原生态肥业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the oil-contaminated soil has been repaired for a long time, and can only be used for the cultivation of economic plants after passing the qualification, which is low in economic efficiency.
Although the joint restoration technology of microbial remediation and agricultural crops has realized the planting of agricultural crops, there are problems of low nutrient absorption and difficulty in fertilization, slow growth of crops, and harmful substances in the planted crops.

Method used

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  • Composite biological bacterial fertilizer for petroleum-contaminated soil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1 Composite biological bacterial fertilizer for oil-contaminated soil

[0027] 1. Preparation of modified composite carrier:

[0028] The modified composite carrier is made of soybean meal, rapeseed meal and nanoscale fly ash in a mass ratio of 5:5:2.

[0029] Preparation process: mixing soybean meal and rapeseed meal, after superfine grinding, adding 0.5% phytic acid by mass, standing for 20-25min, adding water to prepare a 40w% slurry; then adding 3% phytic acid by mass to the slurry Stearic acid and sodium hexametaphosphate with a mass of 0.1% are treated at 80-90° C. for 2 hours and dried to obtain a composite carrier.

[0030] 2. Immobilized bacterial agent

[0031] 2.1 Preparation of immobilized carrier:

[0032] The fixed carrier is made of inorganic nanoparticles, phosphite, and chitosan at a mass ratio of 0.5:2:10; wherein the inorganic nanoparticles are made of nano-Fe 3 o 4 , Nano-calcium borate is composed of 1:1 mass ratio.

[0033]Preparat...

Embodiment 2

[0041] Embodiment 2 Composite biological bacterial fertilizer for oil-contaminated soil

[0042] 1. Preparation of modified composite carrier:

[0043] The modified composite carrier is made of soybean meal, rapeseed meal and nanoscale fly ash at a mass ratio of 5:7:3.

[0044] Preparation process: mix soybean meal and rapeseed meal, after superfine grinding, add 0.8% phytic acid by mass, let it stand for 20-25 minutes, add water to prepare 45w% slurry; then add 4% phytic acid by mass to the slurry Stearic acid and sodium hexametaphosphate with a mass of 0.2% are treated at 80-90° C. for 2.5 hours, and dried to obtain a composite carrier.

[0045] 2. Immobilized bacterial agent

[0046] 2.1 Preparation of immobilized carrier:

[0047] The fixed carrier is made of inorganic nanoparticles, phosphite, and chitosan at a mass ratio of 0.8:2.5:12; wherein the inorganic nanoparticles are made of nano-Fe 3 o 4 , Nano-calcium borate is composed of 1:1 mass ratio.

[0048] Prepara...

Embodiment 3

[0056] Embodiment 3 Composite biological bacterial fertilizer for oil-contaminated soil

[0057] 1. Preparation of modified composite carrier:

[0058] The modified composite carrier is made of soybean meal, rapeseed meal and nanoscale fly ash in a mass ratio of 8:5:3.

[0059] Preparation process: mixing soybean meal and rapeseed meal, after superfine grinding, adding 1% phytic acid by mass, standing for 25 minutes, adding water to make a 50w% slurry; then adding 5% stearin by mass to the slurry The acid and its mass of 0.3% sodium hexametaphosphate are treated at 80-90° C. for 3 hours and dried to obtain a composite carrier.

[0060] 2. Immobilized bacterial agent

[0061] 2.1 Preparation of immobilized carrier:

[0062] The fixed carrier is made of inorganic nanoparticles, phosphite, and chitosan at a mass ratio of 1:2:10; wherein the inorganic nanoparticles are made of nano-Fe 3 o 4 , Nano-calcium borate is composed of 1:1 mass ratio.

[0063] Preparation process: Pu...

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Abstract

The invention belongs to the technical field of fertilizers, and particularly relates to a composite biological bacterial fertilizer for petroleum-contaminated soil and a preparation method thereof. The composite biological bacterial fertilizer for petroleum-contaminated soil is prepared from an immobilized microbial agent, a base fertilizer and a modified composite carrier according to the mass ratio of (3-4): (8-15): (10-15). The immobilized microbial agent is prepared by immobilizing compound bacteria of serratia marcescens, candida tropicalis and pseudomonas fluorescens. The modified composite carrier is prepared from soybean meal, rapeseed meal and nanoscale fly ash according to a mass ratio of (5-8): (5-8): (2-3). The composite biological bacterial fertilizer provided by the invention can effectively degrade micromolecular and macromolecular hydrocarbons in petroleum-contaminated soil, and has good adsorption, intermiscibility and dispersion effects with a petroleum layer outsidesoil particles, so that the dispersion and permeation effects of a composite microbial agent and nutrients in the petroleum layer are realized, the inhibition effect of the petroleum layer on microorganisms and nutrients is reduced, and the composite microbial agent is promoted to degrade petroleum, and absorption of nutrients by plants in the contaminated soil is promoted.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and in particular relates to a compound biological bacterial fertilizer for petroleum-contaminated soil and a preparation method thereof. Background technique [0002] Soil is an important natural resource that humans rely on for production and development, and it will also affect one of the elements of the natural ecosystem. Organic matter pollution is one of the main causes of soil pollution. According to relevant research reports, the farmland polluted by organic matter in my country has reached 3.6×10 7 square hectares, of which the oil-contaminated soil area reached 1,000 square hectares. [0003] Petroleum is a complex multi-component homogeneous mixture, known as the "blood" of today's industry and the "black gold" of today's society. Its main components are alkanes, naphthenes and aromatic hydrocarbons, and a small amount of oxygen-containing Compounds, sulfur-containing compounds, ...

Claims

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Application Information

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IPC IPC(8): C05G3/80C05G3/00A01B79/02A01G17/00
CPCA01B79/02A01G17/005C05B7/00C05G3/00C05G3/80C05B17/00C05D3/00C05D9/00C05D9/02C05F5/006C05F9/04
Inventor 曾明贵
Owner 贵州盈丰原生态肥业科技有限公司
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