CN105985784A - Heavy metal repairing agent for improving ion exchange capacity of soil - Google Patents
Heavy metal repairing agent for improving ion exchange capacity of soil Download PDFInfo
- Publication number
- CN105985784A CN105985784A CN201610099300.9A CN201610099300A CN105985784A CN 105985784 A CN105985784 A CN 105985784A CN 201610099300 A CN201610099300 A CN 201610099300A CN 105985784 A CN105985784 A CN 105985784A
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- soil
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- heavy metal
- fermentation
- charcoal
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2109/00—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE pH regulation
Abstract
The invention discloses a heavy metal repairing agent for improving ion exchange capacity of soil. The heavy metal repairing agent is prepared from the following raw materials in parts by weight: 36-39 parts of activated sludge, 7-9 parts of ammonium nitrate, 2-3 parts of zinc sulfate, 5-7 parts of dextrin, 12-14 parts of soybean powder, 88-94 parts of sunflower husks without seeds, 32-34 parts of rice straw, 15-18 parts of kaolin, 9-11 parts of calcium carbonate, 24-25 parts of needles of pinus ellottii engeim and a proper amount of water. By adopting the soil repairing agent disclosed by the invention, problems that a conventional heavy metal polluted soil repairing method is high in cost, secondary pollution can be easily caused and the operation is complex can be solved; organic matters which are cheap and easy to obtain are adopted as raw materials, and under the action of a great amount of active groups in activated sludge and charcoal, the cation exchange capacity of soil can be increased, the effectiveness of heavy metals can be passivated, the capability that exchangeable nutrients are absorbed, held and supplied by soil can be improved, and furthermore the purpose of repairing and treating polluted soil can be achieved.
Description
Technical field
The present invention relates to technical field of soil remediation, particularly relate to a kind of heavy metal renovation agent improving soil ion exchange capacity.
Background technology
The source of China's heavy metal pollution mainly includes that Industrial " three Waste " discharge, house refuse are oozed out, family is coal-fired and motor vehicle exhaust emission etc..The industries such as plating, plastics, chemical industry, mineral smelting processing are the key industry sources of heavy metal, and coal-fired release is also one of major reason of heavy metal pollution of soil, and motor-vehicle tail-gas also can significantly cause the heavy metal pollution of roadside soil.In domestic waste, part contents of heavy metal elements exceeds standard, and long-term stacking also can make heavy metal leak in soil, causes regional soil local content of beary metal to increase.In addition the long-term unreasonable use such as chemical fertilizer, pesticide, muck also results in heavy metal pollution of soil.
The coercing of heavy metal can cause lacking and the reduction of activity of macronutrient in plant, has suppression plant to the absorption of the mineral element such as calcium, magnesium and turn-over capacity when heavy metal concentration is higher.The heavy metal element easily sulfydryl in the active part of enzyme is combined, the effect of the indispensable element in generation metallic element replacement sulfur albumen, biological essential elements such as such as Mg2+, Ca2+ etc., the activity reduction for want of causing antioxidase was even lost efficacy, and did great damage the antioxidant system in families of plant.
The recovery technique of heavy metal contaminated soil mainly uses chemical means at present, but a large amount of chemical agents used in repair process easily cause the recontamination of soil.Charcoal has good absorption property, stable chemical nature, it is possible to reduce the biological effectiveness of heavy metal in soil, can improve crop yield simultaneously, and raw material is extensive, low cost so that it is have clear superiority and using value in the soil administering heavy metal pollution.
To this end, current inventor provides a kind of with the heavy metal soil-repairing agent that charcoal is immobilized substrate, the reparation for soil pollution provides a kind of effective way.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of heavy metal renovation agent improving soil ion exchange capacity.
The present invention is achieved by the following technical solutions:
A kind of heavy metal renovation agent improving soil ion exchange capacity, is prepared by the raw materials in: activated sludge 36-39, ammonium nitrate 7-9, zinc sulfate 2-3, dextrin 5-7, Semen sojae atricolor powder 12-14, go seed sunflower plate 88-94, rice straw 32-34, Kaolin 15-18, calcium carbonate 9-11, Needle of Slash Pine 24-25, water appropriate.
Specifically comprising the following steps that of the preparation of described heavy metal-polluted soil renovation agent
(1) seed sunflower plate and rice straw will be gone to dry in sun underground, after pulverizing, mixing is placed in baking oven at 50-60 DEG C drying 10-12 hour, gained disintegrating slag is placed in sealed furnace, it is warming up to 620-640 DEG C with the speed of 20 DEG C/min, and it is incubated 120-140 minute, it is cooled to afterwards when 60-70 DEG C take out, obtains charcoal；
(2) Kaolin is mixed with calcium carbonate it is placed in calcining furnace, calcine 60-90 minute at 600-700 DEG C, take out after being cooled to room temperature, obtain calcined powder standby；
(3) step 1 gained charcoal and step 2 gained calcined powder are mixed, be laid in immediately below the low-pressure mercury gas lamp of peak value 253.7nm at 55-65mm, take out after irradiating 8-10 hour, obtain modification biological charcoal standby；
(4) putting in fermentation vat by activated sludge, dextrin, Semen sojae atricolor powder mixing, in fermentation 3-4 week, period constantly adds water and keeps fermentation heap water content at 50-60%, to fermentation materials squeeze and filter after having fermented, obtains fermentation solid residue and fermentation liquid；
(5) pull an oar after Needle of Slash Pine being mixed by weight 1:2 with water, and obtain serosity by filtered through gauze, serosity and fermentation liquid are mixed and added into ammonium nitrate, zinc sulfate, be incubated after stirring and being heated to 50-60 DEG C, until liquid is evaporated, obtain powder standby；
(6) mixing of charcoal, fermentation solid residue, step 5 gained powder and leftover materials is placed in comminutor, makes spheroidal particle, obtain heavy metal renovation agent of the present invention.
The using method of the present invention is for being embedded at upper soll layer 10-20cm by renovation agent after being turned over by contaminated soil, and every mu of soil uses 100-120kg renovation agent.
The invention have the advantage that
Kaolin coordinates the modified calcining of calcium carbonate to improve the shock-absorbing capacity of soil, adds the tolerance of soil heavy metal, improves activeness and the plant availability of heavy metal in soil.
Charcoal and calcined kaolin mixed radiation, both the superincumbent all kinds of miscellaneous bacterias of attachment had been eliminated, avoid secondary pollution, can be formed on charcoal surface simultaneously favourable surface then such as-OH, the hydrophilic atomic groups such as-COO ,-CO ,-COOH, improve the unit are adsorbance of charcoal, the sticking to pollutant shows higher surface adsorption efficiency.
The leaf juice energy activating soil heavy metal of highly acidity in pinus elliottii, chelating moiety heavy metal utilizes for plant, then adsorbs residual gravity metal by charcoal, reaches the reparation purpose of heavy metal-polluted soil.
The soil-repairing agent of the present invention solves current heavy-metal contaminated soil restorative procedure and there is the problem that cost is high, easily causes secondary pollution and operates complexity, using organic matter cheap and easy to get is raw material, and by the effect of active groups a large amount of in activated sludge and charcoal, increase the cation exchange capacity (CEC) of soil, heavy metal-passivated effectiveness, improve soil sticking and supply the ability of commutative nutrient, and then contaminated soil is played the purpose of repairing and treating.
Detailed description of the invention
A kind of heavy metal renovation agent improving soil ion exchange capacity, is made up of the raw material of following weight portion (kg): activated sludge 36, ammonium nitrate 7, zinc sulfate 2, dextrin 5, Semen sojae atricolor powder 12, go seed sunflower plate 88, rice straw 32, Kaolin 15, calcium carbonate 9, Needle of Slash Pine 24, water appropriate.
Specifically comprising the following steps that of the preparation of described heavy metal-polluted soil renovation agent
(1) seed sunflower plate and rice straw will be gone to dry in sun underground, and after pulverizing, mixing is placed in baking oven at 50 DEG C drying 10 hours, is placed in sealed furnace by gained disintegrating slag, it is warming up to 620 DEG C with the speed of 20 DEG C/min, and it is incubated 120 minutes, it is cooled to afterwards when 60 DEG C take out, obtains charcoal；
(2) Kaolin is mixed with calcium carbonate it is placed in calcining furnace, calcine 60 minutes at 600 DEG C, take out after being cooled to room temperature, obtain calcined powder standby；
(3) step 1 gained charcoal and step 2 gained calcined powder are mixed, be laid in immediately below the low-pressure mercury gas lamp of peak value 253.7nm at 55mm, take out after irradiating 8 hours, obtain modification biological charcoal standby；
(4) activated sludge, dextrin, Semen sojae atricolor powder mixing being put in fermentation vat, ferment 3 weeks, period constantly adds water and keeps fermentation heap water content 50%, to fermentation materials squeeze and filter after having fermented, obtains fermentation solid residue and fermentation liquid；
(5) pull an oar after Needle of Slash Pine being mixed by weight 1:2 with water, and obtain serosity by filtered through gauze, serosity and fermentation liquid are mixed and added into ammonium nitrate, zinc sulfate, be incubated after stirring and being heated to 50 DEG C, until liquid is evaporated, obtain powder standby；
(6) mixing of charcoal, fermentation solid residue, step 5 gained powder and leftover materials is placed in comminutor, makes spheroidal particle, obtain heavy metal renovation agent of the present invention.
In order to further illustrate the using value of the present invention, inventor chooses one piece of heavy-metal contaminated soil the checking using renovation agent of the present invention to carry out repairing effect, applying renovation agent in soil 60 days, soil sampling carries out the detection of content of beary metal mensuration and soil physico-chemical property respectively after 180 days, and data are as follows:
| Before reparation | Repair latter 60 days | Repair latter 180 days | |
| P in soil H-number | 7.09 | 7.02 | 7.07 |
| Soil TOC content (g/kg) | 43.69 | 51.17 | 57.49 |
| Soil CEC(cmol/kg) | 8.93 | 9.80 | 11.09 |
| Cadmium in Soil content (mg/kg) | 40 | 8 | 3 |
| Content of Pb in Soil (mg/kg) | 984 | 221 | 83 |
| Soil Cr content (mg/kg) | 1833 | 288 | 164 |
| Mercury in Soil content (mg/kg) | 1411 | 166 | 34 |
Be can be seen that by data above, after employing soil-repairing agent of the present invention, in soil, various heavy content substantially reduces, and in soil, organic carbon level and Cation Exchange Capacity in Soils are all improved simultaneously, illustrates that heavy metal-polluted soil renovation agent of the present invention has significant improved effect to soil.
Claims (2)
1. the heavy metal renovation agent improving soil ion exchange capacity, it is characterized in that, be prepared by the raw materials in: activated sludge 36-39, ammonium nitrate 7-9, zinc sulfate 2-3, dextrin 5-7, Semen sojae atricolor powder 12-14, go seed sunflower plate 88-94, rice straw 32-34, Kaolin 15-18, calcium carbonate 9-11, Needle of Slash Pine 24-25, water appropriate.
2. according to the heavy metal renovation agent improving soil ion exchange capacity described in claims 1, it is characterised in that specifically comprising the following steps that of preparation method
(1) seed sunflower plate and rice straw will be gone to dry in sun underground, after pulverizing, mixing is placed in baking oven at 50-60 DEG C drying 10-12 hour, gained disintegrating slag is placed in sealed furnace, it is warming up to 620-640 DEG C with the speed of 20 DEG C/min, and it is incubated 120-140 minute, it is cooled to afterwards when 60-70 DEG C take out, obtains charcoal；
(2) Kaolin is mixed with calcium carbonate it is placed in calcining furnace, calcine 60-90 minute at 600-700 DEG C, take out after being cooled to room temperature, obtain calcined powder standby；
(3) step 1 gained charcoal and step 2 gained calcined powder are mixed, be laid in immediately below the low-pressure mercury gas lamp of peak value 253.7nm at 55-65mm, take out after irradiating 8-10 hour, obtain modification biological charcoal standby；
(4) putting in fermentation vat by activated sludge, dextrin, Semen sojae atricolor powder mixing, in fermentation 3-4 week, period constantly adds water and keeps fermentation heap water content at 50-60%, to fermentation materials squeeze and filter after having fermented, obtains fermentation solid residue and fermentation liquid；
(5) pull an oar after Needle of Slash Pine being mixed by weight 1:2 with water, and obtain serosity by filtered through gauze, serosity and fermentation liquid are mixed and added into ammonium nitrate, zinc sulfate, be incubated after stirring and being heated to 50-60 DEG C, until liquid is evaporated, obtain powder standby；
(6) mixing of charcoal, fermentation solid residue, step 5 gained powder and leftover materials is placed in comminutor, makes spheroidal particle, obtain heavy metal renovation agent of the present invention.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610099300.9A CN105985784A (en) | 2016-02-24 | 2016-02-24 | Heavy metal repairing agent for improving ion exchange capacity of soil |
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| CN201610099300.9A CN105985784A (en) | 2016-02-24 | 2016-02-24 | Heavy metal repairing agent for improving ion exchange capacity of soil |
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| CN105985784A true CN105985784A (en) | 2016-10-05 |
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| CN201610099300.9A Pending CN105985784A (en) | 2016-02-24 | 2016-02-24 | Heavy metal repairing agent for improving ion exchange capacity of soil |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106701097A (en) * | 2016-12-23 | 2017-05-24 | 镇江华域环保设备制造有限公司 | Repair agent for treating heavy metal contaminated soil and application thereof |
| CN113201346A (en) * | 2021-04-20 | 2021-08-03 | 中国科学院南京土壤研究所 | Acid soil biomass charcoal modifier and preparation method and application thereof |
| CN113714270A (en) * | 2020-05-25 | 2021-11-30 | 中国环境科学研究院 | Remediation device and remediation method for soil radioactive element pollution |
| CN113714275A (en) * | 2020-05-24 | 2021-11-30 | 中国环境科学研究院 | Soil layer multistage inoculation microorganism regulation and control method |
| CN113714274A (en) * | 2020-05-24 | 2021-11-30 | 中国环境科学研究院 | Plunger pump for microorganism soil layer dispersion mixing inoculation |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105330408A (en) * | 2015-10-30 | 2016-02-17 | 马鞍山市心洲葡萄专业合作社 | Organic polluted soil remediation fertilizer |
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2016
- 2016-02-24 CN CN201610099300.9A patent/CN105985784A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105330408A (en) * | 2015-10-30 | 2016-02-17 | 马鞍山市心洲葡萄专业合作社 | Organic polluted soil remediation fertilizer |
Non-Patent Citations (3)
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| 何连生等: "《重金属污染调查与治理技术》", 31 December 2013, 中国环境出版社 * |
| 周建利等: ""活化土壤重金属天然植物螯合剂的筛选"", 《生态学报》 * |
| 陈健康: ""紫外辐射改性碳材料对水中重金属的吸附研究"", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106701097A (en) * | 2016-12-23 | 2017-05-24 | 镇江华域环保设备制造有限公司 | Repair agent for treating heavy metal contaminated soil and application thereof |
| CN113714275A (en) * | 2020-05-24 | 2021-11-30 | 中国环境科学研究院 | Soil layer multistage inoculation microorganism regulation and control method |
| CN113714274A (en) * | 2020-05-24 | 2021-11-30 | 中国环境科学研究院 | Plunger pump for microorganism soil layer dispersion mixing inoculation |
| CN113714270A (en) * | 2020-05-25 | 2021-11-30 | 中国环境科学研究院 | Remediation device and remediation method for soil radioactive element pollution |
| CN113201346A (en) * | 2021-04-20 | 2021-08-03 | 中国科学院南京土壤研究所 | Acid soil biomass charcoal modifier and preparation method and application thereof |
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