Planting soil and preparation method thereof

A technology for fermenting bacteria and sludge, applied in the field of planting soil and its preparation, can solve the problems of polluted environment, large demand for foreign soil, occupation of land resources, etc. , to achieve the effect of resource utilization

Active Publication Date: 2018-03-23
DALIAN DEETOP ENVIRONMENTAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of planting soil and its preparation method, so that the land reclamation of abandoned mines can use this kind of planting soil in large quantities, and at the same time, the various indicators of the planting soil can reach the requirements of CJ / T 340-2011 "Green Planting Soil" Requirements of national standards to solve the technical problems of a large number of tailings that occupy land resources and pollute the environment, broaden the ways of sludge harmless treatment, and alleviate the problem of large demand for foreign soil in land reclamation

Method used

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  • Planting soil and preparation method thereof

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preparation example Construction

[0038] A preparation method of planting soil, comprising the following steps:

[0039] (1) Combine sludge, iron tailings, decomposed organic fertilizer, tailings-sludge activated carbon according to mass ratio: sludge 100~120: iron tailings 40~50: decomposed organic fertilizer 10~15: tailings-sludge Activated carbon 20~30 and mix well to get the mixture;

[0040] (2) Add the sludge fermentation bacteria into the mixture, mix evenly, and decompose for 10 to 15 days to obtain planting soil.

Embodiment 1

[0042] A kind of planting soil and preparation method thereof, comprises the following steps:

[0043] (1) Send the sludge to the thickener for dehydration and digestion, and then send it to the vibrating screen for screening to obtain the sludge raw material under the -10 mesh sieve;

[0044] (2) Send the iron tailings sand to the vibrating screen for screening to obtain +100 mesh iron tailings sand and -100 mesh iron tailings sand, and then mix the +100 mesh iron tailings sand and -100 mesh iron tailings sand according to the mass ratio: +100 mesh iron tailings sand 3: -100 mesh iron tailings 1.2 are mixed evenly to obtain iron tailings compound ingredients;

[0045] (3) Send the sludge to a thickener for concentration and dehydration, digestion, and natural air-drying, then send it to a cone crusher for crushing, and then sieve it through a vibrating screen to obtain sludge raw materials under a -10 mesh sieve; magnesite slag Send it to the jaw crusher for crushing, then s...

Embodiment 2

[0050] A kind of planting soil and preparation method thereof, comprises the following steps:

[0051] (1) Send the sludge to the thickener for dehydration and digestion, and then send it to the vibrating screen for screening to obtain the sludge raw material under the -10 mesh sieve;

[0052] (2) Send the iron tailings sand to the vibrating screen for screening to obtain +100 mesh iron tailings sand and -100 mesh iron tailings sand, and then mix the +100 mesh iron tailings sand and -100 mesh iron tailings sand according to the mass ratio: +100 mesh iron tailings 3.2: -100 mesh iron tailings 1.1 are mixed evenly to obtain iron tailings compound ingredients;

[0053] (3) Send the sludge to a thickener for concentration and dehydration, digestion, and natural air-drying, then send it to a cone crusher for crushing, and then sieve it through a vibrating screen to obtain sludge raw materials under a -10 mesh sieve; magnesite slag Send it to the jaw crusher for crushing, then send...

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Abstract

The invention provides a planting soil and a preparation method thereof. The planting soil comprises the following raw materials in parts by mass: 100-120 parts of sludge, 40-50 parts of iron tailingssand, 10-15 parts of a decomposed organic fertilizer and 20-30 parts of tailings-sludge activated carbon. The preparation method comprises the following steps: (1) uniformly mixing the sludge, iron tailings sand, the decomposed organic fertilizer and the tailings-sludge activated carbon according to a mass ratio of (100-120):(40-50):(10-15):(20-30) to obtain a mixture; and (2) adding a sludge fermentation strain into the mixture, uniformly mixing the materials, and decomposing the mixture for 10-15 days to obtain the planting soil. According to the planting soil provided by the invention, coal slime, molybdenum tailings, phosphorus tailings, magnesite slag and the iron tailings sand are widely applied in abandoned mines, so that the problems of land resource occupation and environmental pollution caused by tailings stacking are solved, the resource utilization of tailings is realized, wastes are changed into valuables, and the effective utilization rate of resources is improved; and meanwhile, the application of sludge to the planting soil also provides a solution for recycling, reduction and harmless treatment of sludge.

Description

technical field [0001] The invention relates to the technical field of planting soil preparation, in particular to a planting soil and a preparation method thereof. Background technique [0002] Tailings are the solid waste left after the ore has been selected and concentrated. With the rapid development of iron and steel, non-ferrous metals, coal and other industries, the amount of ore mining continues to increase, and the amount of tailings discharged from the concentrator is also increasing day by day. A large amount of stockpiling not only brings many problems to the mining environment and economy, but also occupies a large amount of land resources, which has become a major problem facing the sustainable development of the mining-metallurgical industry chain. [0003] Sludge is the product of sewage treatment, which is an extremely complex heterogeneous body composed of organic debris, bacterial cells, inorganic particles, colloids, etc. During the treatment of urban se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G24/10A01G24/12A01G24/17A01G24/20C05G1/00C05F17/00
CPCC05B17/00C05F17/00C05D5/00C05D9/00C05D9/02C05F7/00C05F11/08Y02W30/40
Inventor 马跃庞鹤王鞍山杨秋雨王洪志
Owner DALIAN DEETOP ENVIRONMENTAL TECH CO LTD
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