CN105837370A - An environmental friendly soil ecology modifying agent and a preparing method thereof - Google Patents
An environmental friendly soil ecology modifying agent and a preparing method thereof Download PDFInfo
- Publication number
- CN105837370A CN105837370A CN201610216446.7A CN201610216446A CN105837370A CN 105837370 A CN105837370 A CN 105837370A CN 201610216446 A CN201610216446 A CN 201610216446A CN 105837370 A CN105837370 A CN 105837370A
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- modifying agent
- powder
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- type soil
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Classifications
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
An environmental friendly soil ecology modifying agent is disclosed. The modifying agent comprises 5-10% by mass of calcium bentonite, 50-60% by mass of acid-treated steel slag pulverized powder, 10-20% by mass of building waste pulverized powder, 20-30% by mass of ground mineral slag powder, 0.5-3% by mass of triethanolamine and 0.5-1.5% of FDN. The calcium bentonite is adopted as a component preserving water and nutrients, and the acid-treated steel slag pulverized powder and the building waste pulverized powder are used as main cementing materials. The prepared modifying agent is used for ecological remediation of polluted bottom mud of lakes and the like, has characteristics of good soil modifying effects, a low production cost and high engineering usability, and is low in requirements on production device. The prepared modifying agent can effectively overcome the demand of treating black and odorous bottom mud and a problem of resource utilization of industrial wastes, has important environment and economic benefit and is suitable for popularization and application.
Description
Technical field
The invention belongs to environmental protection technical field, relate to a kind of environment protection type soil ecological modifying agent, be specifically related to one and utilize work
Environment protection type soil ecological modifying agent for the training of channel or bottom mud in lake restoration of the ecosystem prepared by industry waste residue.
Background technology
China's industry achieves remarkable achievement through fast development decades, also creates substantial amounts of industrial solid simultaneously and gives up
Gurry, such as slag, grain slag and building waste etc..These garbages, along with the propelling of process of industrialization, day by day cause prominent
Social contradiction.On the other hand, along with the propelling of urbanization process of industrialization, cause most rivers and lakes seriously polluted,
Define the black and odorous water affecting people's lives, make environmental destruction and social development contradiction.
Existing black and odorous water sludge handling material is generally divided into dewatering and coagulating agent and chelate stabilizer both.Wherein, dehydration is solid
Knot agent is to make the organic matter in bed mud and moisture be fixedly arranged in induration by the means strengthening chemical modification, thus changes bed mud
Thing phase and state, reach the purpose of project treatment；Bed mud after consolidation can fill hilling as engineering, but universal alkali
Spending higher, easily draw the salinization of soil phenomenons such as scum, surrounding exists a certain degree of impact, additionally it is to raw and auxiliary material
Require and cost is the most of a relatively high, be unfavorable for that high-volume is promoted and industrialized production；Chelate stabilizer is then dependent on chemical agent
Chelating itself or coupled action are by form by chemical bond of the toxic component in bed mud such as persistent organism and heavy metal etc.
Being combined on chelating body, thus reach the stabilizing treatment to soil, the incorporation of this medicament itself is the most with high costs,
Being unfavorable for improving the Sludge Property of bed mud simultaneously, process in the later stage and still face bigger difficulty in terms of transport, domestic market should
Kind of medicament mostly is import, and core technology rests in developed country's hands, restricts this technology in the large-scale application of China and popularization.
Summary of the invention
In order to solve above-mentioned technical problem, it is an object of the invention to provide a kind of with environmental protection that trade waste is main raw and auxiliary material
Type soil ecology modifying agent, it has the advantages that soil modification fruit is good, production cost is low, engineering usability is strong, and sets production
Standby condition requires low, can synchronize to realize quick, recycling and the recycling of trade waste nearby of bottom mud in lake etc.,
There is important environment and economic benefit, be suitable for popularization and application.
For achieving the above object, the technical solution used in the present invention is:
A kind of environment protection type soil ecological modifying agent, mass percent shared by each component is: calcification bentonite 5-10%, acid treatment steel
Sizing fine powder 50-60%, building waste pulverized powder 10-20%, slag mill fine powder 20-30%, triethanolamine 0.5-3%, FDN
0.5-1.5%.
Preferably, described slag mill fine powder is 1:(1-3 with the mass ratio of acid treatment levigating steel slag powder).
In such scheme, described calcification bentonite is commercially available bentonite, and its CEC (Absorbance ratio-derivative method) value is not less than 80mg/g.
In such scheme, described acid treatment levigating steel slag powder is soaked in the hydrochloric acid that mass concentration is 15% by graining steel slag and is not less than 4
Hour, then it is milled to grinding rate and is not less than 200 mesh and forms.Owing to slag is the solid waste produced under hot conditions, contain
The indefinite phase constitution surface compact of the burning compositions such as a lot of calcium, magnesium, silicon, aluminum, is unfavorable for activity excitation, and the present invention is by steel
Slag carries out being acidified erosion and processes, and is conducive to its activity excitation；Then proceed to utilize ball mill by the levigating steel slag after acidification extremely
Below 200 mesh, excite its potential pozzolanic activity further.It is applied to the ecological improvement such as bed mud, it is ensured that it is necessary
Mechanical property.
In such scheme, described building waste pulverized powder is formed through grinding by the build concrete discarded, mortar, masonry etc..
In such scheme, described slag mill fine powder can be selected for commercially available 95 grades of slag micropowders.
In such scheme, the specific surface area of described building waste pulverized powder and slag mill fine powder is not less than 400m2/kg。
The triethanolamine that the present invention uses acts primarily as peptizaiton, can reduce surface tension, promote the dispersion effect of various ion；
Its content is less than 1%, reduces capillary DeGrain, when content is higher than 3%, viscosity can be caused to increase, affect gained
The uniformity that consolidation thing is bonding, and cost increase.
Preferably, described FDN is 1:2 with the mass ratio of triethanolamine；The present invention by FDN and triethanolamine with the use of, the two
With the use of can also improve while dispersion effect in system pollute the group of molecule on material reaction interface improving powder body material
Gather and complexation effect.
The preparation method of above-mentioned a kind of environment protection type soil ecological modifying agent, comprises the steps:
1) each component is weighed by following mass percent: calcification bentonite 5-10%, acid treatment levigating steel slag powder 50-60%,
Building waste pulverized powder 10-20%, slag mill fine powder 20-30%, triethanolamine 0.5-3%, FDN 0.5-1.5%；
2), after each component weighed adding closing three axle blenders stirring 15-20min, overlay film is packed and is i.e. obtained described environment protection type soil
Earth ecological modifying agent.
In such scheme, described stir speed (S.S.) is not less than 30r/min.
Environment protection type soil ecological modifying agent described in such scheme can be applicable to carry out bottom mud in lake etc. improveing and ecological recovery in situ,
Or use it for after bottom mud in lake is dredged preparing the fields such as cultivated soil, it is achieved the recycling of bottom mud in lake.
The principle of the present invention is:
1) present invention uses calcification bentonite to keep component as crucial water conservation and nutrient, after can effectively keeping improveing in soil
The ecological recovery of free moisture and nutrient, beneficially soil self and improvement；And calcification bentonite can effective water holding fertilizer conservation, will have
Evil element is by the effects such as coupling/complexation, plant institute when harmful element can be converted into cultivation effect while holding soil moisture
The nutrient needed, it is achieved the ecological improvement of bottom mud in lake；Meanwhile, present invention volume bentonitic to calcification is applied further
Exploring, when its addition is less than 5%, after improvement, the water holding capacity of soil is poor, and soil fertility in improved, process is scattered and disappeared fast, if
Its addition is more than 10%, then the workability index of modifying agent declines substantially, is unfavorable for that industrialization promotion and cost increase are obvious.
2) present invention use acid treatment levigating steel slag powder and slag mill fine powder as major gelled material, wherein through peracid treatment
Levigating steel slag powder can reduce the alkali of gained Binder Materials system, and the lattice that simultaneously can increase slag material self is recessed
Falling into degree, the beneficially lifting of later strength, to maintaining the mechanical property that the follow-up gained improvement soil body is necessary；To levigating steel slag powder
Volume explore show, its volume higher than 60% time, soil acidity or alkalinity index can be affected, cause salinization of soil phenomenon, unfavorable
In the restoration of the ecosystem of modified soil, when its volume is less than 50%, then plasticity of soil can be caused to improve ability and to decline, be unfavorable for soil
The through engineering approaches operation of improvement.
3) building waste pulverized powder is as the Binder Materials mineralizer in described modifying agent and structure embryos supplier, is mainly used in
Improve the mineralising of Binder Materials, be used for reducing gelling material interfacial reaction heat, reduce the drying shrinkage index of material, be also simultaneously
The crystallization idiosome supplier of system structure；When the addition of building waste pulverized powder is less than 10%, its remineralization efficacy is poor, and system crystallizes
Nucleation rate is slow, and after gelling reaction, system drying shrinkage is big, is easily formed crack and causes intensity to reduce, and when its addition is higher than 20%, is
The absorption bridge chain even crystallization channel of system is easily filled blocking, relatively big to water-retaining property Index Influence, the most also reduces system itself
Physical property.
The invention have the benefit that
1) present invention uses calcification bentonite to keep component as crucial water conservation and nutrient, after can effectively keeping improveing in soil
Free moisture and nutrient, and control ecological reply and the improvement of the harmful substances, beneficially bottom mud in lake such as free state heavy metal simultaneously.
2) present invention uses acid treatment levigating steel slag powder and slag mill fine powder as the major gelled material in modifying agent, is applied
In the restoration of the ecosystem of bottom mud in lake, after can ensureing to a certain extent to improve, the intensity of gained soil, can be used for the original position of bottom mud in lake
The recycling (as cultivated soil etc.) of bed mud after restoration of the ecosystem and dredging.
3) component and the content of environment protection type soil ecological modifying agent are furtherd investigate by the present invention, and the modifying agent of preparation is to soil
Earth modification fruit is good, production cost is low, engineering usability is strong, and low to producing equipment requirements, can effectively solve black and odorous water bed mud
Process demand and the problem of industrial waste recycling, have important environment and economic benefit.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with specific embodiment, to the present invention
It is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to limit
Determine the present invention.As long as additionally, technical characteristic involved in each embodiment of invention described below is the most not
The conflict of composition just can be mutually combined.
In following example, described calcification bentonite is commercially available bentonite, and its Absorbance ratio-derivative method is 90mg/g；Described acid treatment slag grinds
Fine powder is soaked 4 hours in the hydrochloric acid that mass concentration is 15% by graining steel slag, is then milled to fineness and is not less than 200 mesh and forms；
Described building waste pulverized powder is formed through grinding by the build concrete discarded, and its specific surface area is 280m2/g；Slag mill fine powder
Specific surface area be 400m2/g。
In following example, take from Huangmei County, Huanggang City Ruyi Lake gained after dredging for the bottom mud in lake carrying out improved treatment dirty
Dye bed mud, its water content is 105%.
Embodiment 1～3
Environment protection type soil ecological modifying agent
Described in embodiment 1～3, the preparation method of environment protection type soil ecological modifying agent comprises the steps:
1) match ratio described in table 1 is weighed each component；
2) after each component weighed is added the rotating speed stirring 15-20min of closing three axle blender 30r/min, overlay film packing respectively
Obtain described environment protection type soil ecological modifying agent.
The match ratio (%) of environment protection type soil ecological modifying agent described in table 1 embodiment 1～3
Bottom mud in lake ecology improves
It is applied to environment protection type soil ecological modifying agent prepared by embodiment 1～3 polluted bed mud carries out ecological improvement, wherein environment-friendly type
The addition of soil ecology modifying agent accounts for the 5% of polluted bed mud quality, by mixed with polluted bed mud stirring for environment protection type soil ecological modifying agent
Close uniformly, and the pedotheque after the improvement obtained is detected: select three groups of samples respectively it to be improved, after improveing
Pedotheque detect, find fairly obvious to reclamation result, concrete testing result is as shown in table 2:
The performance test results of gained pedotheque after table 2 improvement
The above results shows, environment protection type soil ecological modifying agent prepared by the present invention is good to soil modification fruit, production cost is low, work
Journey usability is strong, and low to producing equipment requirements, can effectively solve black and odorous water sludge handling demand and industrial waste resource
The problem utilized, has important environment and economic benefit.Environment protection type soil ecological modifying agent of the present invention can equally be well applied to
Original position restoration of the ecosystem to polluted lake bed mud.
As it will be easily appreciated by one skilled in the art that and the foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention,
All any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, should be included in the guarantor of the present invention
Within the scope of protecting.
Claims (7)
1. an environment protection type soil ecological modifying agent, mass percent shared by each component is: calcification bentonite 5-10%, acid treatment
Levigating steel slag powder 50-60%, building waste pulverized powder 10-20%, slag mill fine powder 20-30%, triethanolamine 0.5-3%, FDN
0.5-1.5%.
Environment protection type soil ecological modifying agent the most according to claim 1, it is characterised in that described calcification bentonite is commercially available swollen
Profit soil, its Absorbance ratio-derivative method is not less than 80mg/g.
Environment protection type soil ecological modifying agent the most according to claim 1, it is characterised in that described acid treatment levigating steel slag powder by
Graining steel slag soaks in the hydrochloric acid that mass concentration is 15% and is not less than 4 hours, is then milled to fineness and is not less than 200 mesh and forms.
Environment protection type soil ecological modifying agent the most according to claim 1, it is characterised in that described building waste pulverized powder is by giving up
One or more in the build concrete abandoned, mortar, masonry form through grinding.
Environment protection type soil ecological modifying agent the most according to claim 1, it is characterised in that described building waste pulverized powder and ore deposit
The specific surface area of sizing fine powder is not less than 400m2/kg。
6. the preparation method of environment protection type soil ecological modifying agent described in any one of claim 1-5, it is characterised in that include walking as follows
Rapid:
1) each component is weighed by following mass percent: calcification bentonite 5-10%, acid treatment levigating steel slag powder 50-60%,
Building waste pulverized powder 10-20%, slag mill fine powder 20-30%, triethanolamine 0.5-3%, FDN 0.5-1.5%；
2), after each component weighed adding closing three axle blenders stirring 15-20min, overlay film is packed and is i.e. obtained described environment protection type soil
Earth ecological modifying agent.
Preparation method the most according to claim 6, it is characterised in that step 2) described in stir speed (S.S.) be not less than 30r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610216446.7A CN105837370A (en) | 2016-04-08 | 2016-04-08 | An environmental friendly soil ecology modifying agent and a preparing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610216446.7A CN105837370A (en) | 2016-04-08 | 2016-04-08 | An environmental friendly soil ecology modifying agent and a preparing method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106416684A (en) * | 2016-09-12 | 2017-02-22 | 巢湖春友种业科技有限公司 | Planting method for purple sweet potatoes |
| CN108947425A (en) * | 2018-08-21 | 2018-12-07 | 武汉锐索思环境科技有限公司 | A kind of dredging silt ecological modifier and the preparation method and application thereof |
| CN110668899A (en) * | 2019-10-28 | 2020-01-10 | 湖北大学 | Rapid domestic sludge fertilizing and maturing method |
| CN110668900A (en) * | 2019-10-28 | 2020-01-10 | 湖北大学 | Preparation method of compost balls for dredging black and odorous bottom mud in river, lake and reservoir |
| CN110698008A (en) * | 2019-10-30 | 2020-01-17 | 湖北大学 | Sludge deodorization drying agent and preparation method thereof |
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| CN105367009A (en) * | 2015-10-26 | 2016-03-02 | 广东工业大学 | Sludge curing agent and preparing method and application thereof |
| CN105363772A (en) * | 2015-11-24 | 2016-03-02 | 湖北金宝马环保科技有限公司 | Contaminated soil consolidation remediator and preparation method |
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| CN1944324A (en) * | 2006-10-19 | 2007-04-11 | 上海大学 | Method for treating city ditch mud |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106416684A (en) * | 2016-09-12 | 2017-02-22 | 巢湖春友种业科技有限公司 | Planting method for purple sweet potatoes |
| CN108947425A (en) * | 2018-08-21 | 2018-12-07 | 武汉锐索思环境科技有限公司 | A kind of dredging silt ecological modifier and the preparation method and application thereof |
| CN108947425B (en) * | 2018-08-21 | 2021-03-30 | 武汉锐索思环境科技有限公司 | Dredged sludge ecological modifier and preparation method and application thereof |
| CN110668899A (en) * | 2019-10-28 | 2020-01-10 | 湖北大学 | Rapid domestic sludge fertilizing and maturing method |
| CN110668900A (en) * | 2019-10-28 | 2020-01-10 | 湖北大学 | Preparation method of compost balls for dredging black and odorous bottom mud in river, lake and reservoir |
| CN110668899B (en) * | 2019-10-28 | 2021-09-14 | 湖北大学 | Rapid domestic sludge fertilizing and maturing method |
| CN110668900B (en) * | 2019-10-28 | 2021-09-14 | 湖北大学 | Preparation method of compost balls for dredging black and odorous bottom mud in river, lake and reservoir |
| CN110698008A (en) * | 2019-10-30 | 2020-01-17 | 湖北大学 | Sludge deodorization drying agent and preparation method thereof |
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Application publication date: 20160810 |
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