Test method for remediation rate of saline-alkali soil

A saline-alkali soil and testing method technology, which is applied in the field of saline-alkali soil remediation rate testing, can solve problems such as unfavorable use by ordinary small and medium-sized enterprises or individual researchers, and expensive instruments.

Active Publication Date: 2022-06-07
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The soil samples obtained in the test contain very complex components after pretreatment, which is not suitable for testing with these large instruments, and these instruments are expensive, which is not conducive to the use of ordinary small and medium-sized enterprises or individual researchers.

Method used

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  • Test method for remediation rate of saline-alkali soil
  • Test method for remediation rate of saline-alkali soil
  • Test method for remediation rate of saline-alkali soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A small test is carried out to illustrate the test method of the present invention. In the following examples, the soil is selected in a certain saline-alkali land in Dagang District, Tianjin. According to the saline-alkali content in the soil, saline-alkali land can generally be divided into mild saline-alkali land, moderate saline-alkali land and severe saline-alkali land. In this embodiment, mild saline-alkali land is selected for the saline-alkali land.

[0038] Soil alkalinity is maintained at the original level; the purity of the test water is double-distilled water and the total soluble organic carbon is less than 1×10 -3 g / L; the purity of the reagent is from analytical to chromatographic purity; the glass instruments used in the test are all washed with washing liquid.

[0039] A method for testing the restoration rate of saline-alkali soil, the soil restoration rate is the total restoration rate W after the restoration of the oil-containing saline-alkali soil ...

Embodiment 2

[0076] In the embodiment 2, the technical scheme is basically the same as the embodiment 1, and the difference is: in the present embodiment, the saline-alkali land selects the moderate saline-alkali land in Dagang District, Tianjin, and in this moderately saline-alkali land, the indigenous microbial strains have Algibacteragarolyticus, Halomonas halodenirificans, Novosphingobium nitrogenifigens, Halomonas halmephilum, Roseiflexus castenholzii, Salinivibrio costicola, Spirochaeta halophila, a total of 7 species of microorganisms, 5 species were added to the soil, namely: Bacillus alcalophilus, Halomonas alkaliphila, Halovibrio variabilis, Pseudomonas guineae, Rhodoligotrophos appendicifer. That is, in the present embodiment, the operations that make soil contain 12 kinds of microorganisms are: add 100mL bacterial liquid to a part of this soil (the soil of a module), the bacterial species in the bacterial liquid are respectively: Bacillus alcalophilus, Halomonas alkaliphila, Hal...

Embodiment 3

[0093] The technical scheme in Example 3 is basically the same as that in Example 1, except that the saline-alkali land in the present embodiment selects the severe saline-alkali land of Da'an City, Jilin Province, and the indigenous microorganism strains in this moderately saline-alkali land include Algibacteragarolyticus, Bacillus alcalophilus, Halomonas halodenirificans, Halovibriovariabilis , Pseudomonas guineae, Roseiflexus castenholzii, Salinivibriocosticola, a total of 7 kinds of microorganisms, 5 kinds of bacteria were added to the soil, namely: Halomonas alkaliphila, Halomonas halmephilum, Novosphingobium nitrogenifigens, Rhodoligotrophosappendicifer, Spirochaeta halophila. That is, in this embodiment, the operations for making the soil contain 12 kinds of microorganisms are: adding 100 mL of bacterial liquid to a portion of the soil (one module of soil), and the bacterial species in the bacterial liquid are: Halomonasalkaliphila, Halomonas halmephilum, Novosphingobium...

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Abstract

The invention discloses a test method for the remediation rate of saline-alkali soil. The test method of the invention is specially used to detect the total remediation rate under multi-factors and the abiotic remediation rate under abiotic factors. The factors of crude oil pollution are taken into account, and the direct test obtains c s 、c n 、c a 、c x 、c y and c t , so the obtained soil remediation rate is highly accurate, and the addition of each substance can be adjusted in time according to the degree of pollution of the oil-containing saline-alkali soil to be tested, so that the subsequent remediation method is more in line with the actual situation of the soil to be remediated, so that the pollution remediation achieve better results. In addition, the test method is low in cost, can be used conveniently by both enterprises and individuals, has high accuracy, has broad application prospects, and has the advantages of technical feasibility and low cost.

Description

technical field [0001] The invention belongs to the technical field of remediation of crude oil-contaminated saline-alkali soil, in particular to a method for testing the remediation rate of saline-alkali soil. Background technique [0002] Judging from the existing literature, there have been many reports on the remediation of crude oil-contaminated saline-alkali soils. Most of these remediation works are carried out by microorganisms, but extreme saline-alkali soils have high salinity content, loss of nutrients such as organic matter, and poor soil. Most of the common microorganisms are difficult to survive, and there are very few types of microorganisms that can survive and remediate soil pollution, and they are all salt-tolerant () tolerant () alkalophilic microorganisms. These microorganisms can use the organic matter or exogenous organic matter in saline-alkali soil to grow and metabolize under extreme saline-alkali conditions, which provides the possibility for the de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/33G01N30/74
CPCG01N21/33G01N30/74
Inventor 吴新世冯澳胡鑫周婷
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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