CN104941993B - A kind of method for comprehensive repairing in serious pollution soil - Google Patents
A kind of method for comprehensive repairing in serious pollution soil Download PDFInfo
- Publication number
- CN104941993B CN104941993B CN201510433793.0A CN201510433793A CN104941993B CN 104941993 B CN104941993 B CN 104941993B CN 201510433793 A CN201510433793 A CN 201510433793A CN 104941993 B CN104941993 B CN 104941993B
- Authority
- CN
- China
- Prior art keywords
- soil
- planted
- earthworm
- organic fertilizer
- collection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a kind of method for comprehensive repairing in serious pollution soil, carry out as follows：Polluted soil is excavated, and moves to processing pond, is mixed with renovation agent, stir, 4~5h is reacted, mud-water separation is carried out after reaction, makes heavy metal formation precipitation separation, after repetition said process 5~10 times, molasses and beancake powder are added thereto, is stirred, and adjust moisture content 20%~40%, at a temperature of 20 DEG C~30 DEG C, isolation air care 1 month；Above-mentioned soil is moved back to original place, organic fertilizer is applied, is put into vermiculture, waters daily, it is ensured that after moisture content is 60~70%, two weeks, earthworm collection is carried out；State then up and sisal hemp and tall grass are planted in soil, with three months for a season, after plantation terminates per season, even root is collected, plantation of digging again, is added organic fertilizer, is planted again.
Description
Technical field
The invention belongs to environmental protection technical field, and in particular to a kind of method for comprehensive repairing in serious pollution soil.
Background technology
Soil be earth surface have fertility, can growing plant loose surface layer, it be the mankind depend on for existence development must
The means of production needed, are also most basic, most important, the irreplaceable natural resources of human society, therefore to the guarantor of soil environment
Shield has caused extensive concern.
By the species of pollutant, contaminated soil can be divided into the soil and inorganic matter contaminated soil of Organic Pollution.Soil
The organic compound that earth organic pollution fingering enters soil environment and polluted, mainly including petroleum-type, benzene homologues, agricultural chemicals,
Polycyclic aromatic hydrocarbon (PAHs), Polychlorinated biphenyls (PCBs) etc..Be related to organic pollution discharge industry mainly have petrochemical industry, coking,
Paint and coating manufacture, pesticide producing, rubber manufacture, leather shoes manufacture, wood-based plate and wood furniture manufacture, automobile and accessory
Spraying, Electronic products manufacturing, steel-making, manufacture of cement etc..In addition, China once largely produces and widely used POPs class desinsections
Agent DDT, hexachloro-benzene, Niran and mirex etc., although these agricultural chemicals have been disabled for many years, still there is residual in soil.It is inorganic
Thing contaminated soil is mainly heavy metal pollution, 1.5 ten thousand tons of mercury that the whole world is discharged every year on average, 3,400,000 tons of copper, 5,000,000 tons
Lead, 15,000,000 tons of manganese will all enter soil in a variety of ways, China by the heavy metal pollutions such as cadmium, arsenic, chromium, lead cultivated area
The 1/5 of total area under cultivation is accounted for, is related to 11 and saves 25 areas, the annual economic loss therefore caused is up to more than 200 hundred million yuan.It is this general
Store-through soil pollution, it is necessary to economy, safety ecological reestablishment can just solve extensively.
At present, for pollutant containing volatile organic matter (VOCs) and the soil of total petroleum hydrocarbon (TPH), reparation both domestic and external
Technology is more ripe (such as extracting of chemical oxidation, gas phase, biological compost, normal temperature parsing), and its repairing effect can also be obtained
Ensure；For the soil containing multiring aromatic hydrocarbon (PAHs) pollutant, mainly there are four kinds of recovery techniques：Microbial degradation, light degradation,
High-temperature heat treatment and chemical oxidation.Research finds that PAHs more than 4 rings makes it difficult to be degraded by microorganisms because of its poorly water-soluble.
In addition microbial degradation needs longer Deal with Time, and the control to temperature requires high, and the workload of early stage is big, the duration of engineering
Can be very long；For photooxidation technology, theoretical research stage is also only rested at present, the country is also without practical application example；For height
Treatment technology (such as high temperature thermal desorption) is warmed, both at home and abroad with relatively broad, all kinds of PAHs in soil can be carried out thoroughly
Remove, but the technology cost of disposal is high, and equipment debugging, run it is also relative complex；For chemical oxidation, the technology maturation, place
Put that the cycle is short, cost is relatively low.It is widely used and is repaiied in by VOCs, TPH and part PAHs (below 5 rings) contaminated soil at present
In multiple.And for the contaminated soil containing 5 rings and 5 ring above PAHs, chemical oxidation techniques repairing effect is not good.
Existing remediation of heavy metal-contaminated soil mainly includes chemical method, and (chemical immobilization and stabilisation, chemistry are also
It is former), isolation investment, hot smelting partition method, electric repairing method, microorganism remediation method, phytoremediation, absorption method and ablution etc.,
Chemical method changes the property of soil, and processing cost is high, and there is secondary pollution.In a word, current soil restoring technology is general all
Have that cost is high, secondary pollution is serious, complex operation, the defect of repairing efficiency length；Isolation investment is only carried out heavy metal
Isolation, potential danger is still suffered to soil ecology；It is less ripe that electricity repairs law technology；Hot smelting partition method is not suitable for execute-in-place,
Processing cost is high, narrow application range；The carrier that microorganism remediation method is utilized is living microorganisms, the discontinuous distribution meeting of pollutant
Separate microorganism motion, therefore long processing period, and make substrate with indigenous microorganism competition organic nutrient substance, easily lose work
Property；, there is the subsequent treatment of plant in phytoremediation repairing efficiency length (even centuries decades)；Electricity, which is repaired, to be only applicable
In small area pollution, execute-in-place difficulty is big；There is easy saturation, cost height, efficiency low land shortcoming in absorption method；Relative to it is above-mentioned its
His method, ablution has the cycle short, the low advantage of cost, but when using chemical reagent, easily influences soil environment, cause
Secondary pollution.
These above-mentioned methods in the prior art, although have its advantage, but function is relatively simple, and there is certain limitation
Property, it is impossible to the soil of the complicated serious pollution of processing, such as simultaneously by organic matter and inorganic matter contaminated land.
The content of the invention
Goal of the invention：For by the soil of a variety of pollution sources serious pollutions, single restorative procedure tends not to meet need
Will, the invention provides the method for comprehensive repairing that a kind of showering and animal-phytoremediation in situ are combined.
Technical scheme：The invention provides a kind of method for comprehensive repairing in serious pollution soil, specifically, being by following step
It is rapid to carry out：
Polluted soil is excavated, and moves to processing pond, mixes, stirs with renovation agent, 4~5h is reacted, after reaction
Mud-water separation is carried out, makes heavy metal formation precipitation separation, repeats after said process 5~10 times, molasses and soya-bean cake are added thereto
Powder, stirs, and adjusts moisture content 20%~40%, at a temperature of 20 DEG C~30 DEG C, isolation air care 1 month；
Above-mentioned soil is moved back to original place, organic fertilizer is applied, is put into vermiculture, waters daily, it is ensured that moisture content is 60~
70%, after two weeks, carry out earthworm collection；
State then up and sisal hemp and tall grass are planted in soil, with three months for a season, after per season, plantation terminates, Lian Gen
Collect, plantation of digging again, add organic fertilizer, plant again.
Described renovation agent is the mixture of EDTA and citric acid, the volume ratio 1: 4 of polluted soil and renovation agent consumption.
Described organic fertilizer is the mixture of cow dung and urea.
The method that the earthworm is collected is：Using natural lighting collecting method, 24h waters in advance, then by the soil collection on upper strata
In on cement flooring or plastic cloth, successively push aside, soil scratched clean, earthworm is concentrated on bottom, reach collection purpose, and will
Vermis and soil sieving separating, soil returns paving after collection；After three months, then it will be collected within depth of soil 20cm into earthworm.
When sisal hemp and tall grass is planted, sisal hemp seedling is planted according to 6 plants/square metre, plants high according to 30 plants/square metre
Fescue.
Whole repairing efficiency is completed for 18 months.
Beneficial effect：The present invention be repaired with biology in situ based on, the complex repairation technology supplemented by chemical leaching, and organic
The effect for combining microorganism, can effectively handle by the soil of a variety of pollution sources severe contaminations.
The present invention is ingested using the wriggling of earthworm, and related soil intake is internal so that heavy metal is stopped in earthworm body with
Enrichment, while removing heavy metal pollution of soil to the super enrichment ability of organic matter and heavy metal using sisal hemp and tall grass.
Strengthen complex repairation with reference to animals and plants, it is environment-friendly, the secondary pollution to soil is not produced.
Embodiment：
Technical scheme is described in further detail with reference to embodiment, protection scope of the present invention is not limited to following
Embodiment.
Restorative procedure：
Polluted soil will be excavated, and move to processing pond, polluted soil and renovation agent (EDTA：Citric acid=4:
1) 1: 4 mixing by volume, stirs, and reacts 4.5h, mud-water separation is carried out after reaction, makes heavy metal formation precipitation separation,
Chemical leaching time control was at 1 month.The mass ratio of addition molasses and beancake powder into above-mentioned soil, beancake powder and molasses is 1：
2~9, stir, adjust moisture content 20%~40%, at a temperature of 20 DEG C~30 DEG C, isolation air care 1 month.
Above-mentioned soil is moved back to original place, organic fertilizer is applied, is put into vermiculture, waters daily, it is ensured that moisture content is 60~
70%, after two weeks, using natural lighting collecting method, 24h is watered in advance, then the soil on upper strata is concentrated on into cement flooring or modeling
Expect on cloth, successively push aside, soil is scratched clean, earthworm is concentrated on bottom, reach collection purpose, and vermis and soil are crossed into screening
From soil returns paving after collection；After three months, then it will be collected within depth of soil 20cm into earthworm.
State then up and sisal hemp and tall grass planted in soil, sisal hemp seedling is planted according to 6 plants/square metre, according to 30 plants/
Square metre plantation tall grass.With three months for a season, after per season, plantation terminates, even root is collected, and plantation of digging again is added with
Machine fertilizer, it is 18 months to complete whole repairing efficiency.
Embodiment 1
Handled soil object, containing volatile organic matter pollutant (VOCs) 5510mg/kg, contains polycyclic aromatic hydrocarbon
(PAHs) 785mg/kg, 2400mg/kg containing manganese, 758mg/kg containing chromium.
After being handled by above-mentioned restorative procedure, containing volatile organic matter pollutant (VOCs) 0mg/kg, contain polycyclic aromatic hydrocarbon
(PAHs) 10mg/kg, 54mg/kg containing manganese, 8mg/kg containing chromium.
Embodiment 2
Handled soil object, containing volatile organic matter pollutant (VOCs) 4522mg/kg, 1540mg/kg containing manganese,
311mg/kg containing chromium.
After being handled by above-mentioned restorative procedure, containing volatile organic matter pollutant (VOCs) 0mg/kg, 14mg/kg containing manganese,
0mg/kg containing chromium.
Embodiment 3
Handled soil object, containing volatile organic matter pollutant (VOCs) 7500mg/kg, contains polycyclic aromatic hydrocarbon
(PAHs) 580mg/kg, 300mg/kg containing chromium.
After being handled by above-mentioned restorative procedure, containing volatile organic matter pollutant (VOCs) 16mg/kg, 0mg/kg containing manganese,
0mg/kg containing chromium.
Embodiment 4
Handled soil object, containing volatile organic matter pollutant (VOCs) 3414mg/kg, contains polycyclic aromatic hydrocarbon
(PAHs) 589mg/kg, 1100mg/kg containing manganese, 411mg/kg containing chromium.
After being handled by above-mentioned restorative procedure, containing volatile organic matter pollutant (VOCs) 0mg/kg, contain polycyclic aromatic hydrocarbon
(PAHs) 0mg/kg, 7mg/kg containing manganese, 0mg/kg containing chromium.
Claims (3)
1. a kind of method for comprehensive repairing in serious pollution soil, it is characterised in that carry out as follows：
Polluted soil is excavated, and moves to processing pond, mixes, stirs with renovation agent, 4~5h is reacted, carried out after reaction
Mud-water separation, makes heavy metal formation precipitation separation, repeats after said process 5~10 times, molasses and beancake powder are added thereto, is stirred
Mix uniform, adjust moisture content 20%~40%, at a temperature of 20 DEG C~30 DEG C, isolation air care 1 month；
Above-mentioned soil is moved back to original place, organic fertilizer is applied, is put into vermiculture, waters daily, it is ensured that moisture content is 60~70%,
After two weeks, earthworm collection is carried out；
State then up and sisal hemp and tall grass are planted in soil, with three months for a season, after per season, plantation terminates, Lian Genshou
Collection, plantation of digging again is added organic fertilizer, planted again；
Described renovation agent is the mixture of EDTA and citric acid, the volume ratio 1: 4 of polluted soil and EDTA consumptions；
When planting sisal hemp and tall grass, sisal hemp seedling is planted according to 6 plants/square metre, Festuca Arundinacea is planted according to 30 plants/square metre
Grass；
The method that the earthworm is collected is：Using natural lighting collecting method, 24h is watered in advance, then the soil on upper strata is concentrated on
On cement flooring or plastic cloth, successively push aside, soil is scratched clean, earthworm is concentrated on bottom, reach collection purpose, and by vermis
With soil sieving separating, soil returns paving after collection；After three months, then it will be collected within depth of soil 20cm into earthworm.
2. restorative procedure as claimed in claim 1, it is characterised in that described organic fertilizer is the mixture of cow dung and urea.
3. restorative procedure as claimed in claim 1, it is characterised in that it is 18 months to complete whole repairing efficiency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510433793.0A CN104941993B (en) | 2015-07-22 | 2015-07-22 | A kind of method for comprehensive repairing in serious pollution soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510433793.0A CN104941993B (en) | 2015-07-22 | 2015-07-22 | A kind of method for comprehensive repairing in serious pollution soil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104941993A CN104941993A (en) | 2015-09-30 |
| CN104941993B true CN104941993B (en) | 2017-09-12 |
Family
ID=54157352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510433793.0A Active CN104941993B (en) | 2015-07-22 | 2015-07-22 | A kind of method for comprehensive repairing in serious pollution soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104941993B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107695087A (en) * | 2017-10-19 | 2018-02-16 | 福州清河源环保科技有限公司 | A kind of method of restoration of the ecosystem heavy-metal contaminated soil |
| CN108080407A (en) * | 2018-02-01 | 2018-05-29 | 上海盛弘环境科技有限公司 | A kind of moveable-type soil pollution is the same as position restorative procedure |
| CN109759440B (en) * | 2019-02-27 | 2021-01-05 | 安徽科技学院 | Green planting device for repairing heavy metal soil in mining area |
| CN110153171B (en) * | 2019-06-03 | 2021-06-25 | 四川农业大学 | Method for remedying soil polluted by heavy metal cadmium |
| CN110180875B (en) * | 2019-06-13 | 2021-04-09 | 生态环境部南京环境科学研究所 | Cultivation method of cogongrass for soil remediation |
| CN111229807A (en) * | 2019-10-18 | 2020-06-05 | 杭州罗松贸易有限公司 | Soil remediation method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101947539B (en) * | 2010-08-06 | 2012-02-22 | 浙江博世华环保科技有限公司 | Soil remediation method for treating heavy metal pollutants |
| CN102934580B (en) * | 2012-11-21 | 2014-04-09 | 中国科学院亚热带农业生态研究所 | Planting method of jute in heavy-metal contaminated soil |
| KR20130000366A (en) * | 2012-11-21 | 2013-01-02 | 주식회사 하이드 | Artificial soil by vermicomposting method of treat sewage sludge using compound microorganism |
| CN104070057B (en) * | 2014-06-20 | 2016-08-17 | 杭州蓝天园林生态科技股份有限公司 | A kind of administering method improving cadmium pollution soil repairing effect |
| CN104624635B (en) * | 2014-12-15 | 2016-06-08 | 山东省环境保护科学研究设计院 | A kind of microbial nutrition agent for repairing chromium-polluted soil and deposit |
-
2015
- 2015-07-22 CN CN201510433793.0A patent/CN104941993B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104941993A (en) | 2015-09-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104941993B (en) | A kind of method for comprehensive repairing in serious pollution soil | |
| He et al. | Impact of vermiculite on ammonia emissions and organic matter decomposition of food waste during composting | |
| Muhammad et al. | Changes in microbial community structure due to biochars generated from different feedstocks and their relationships with soil chemical properties | |
| Ren et al. | Effect of sewage sludge hydrochar on soil properties and Cd immobilization in a contaminated soil | |
| CN100534651C (en) | Agent for phytoremediation of soil polluted by heavy metals using the waste active Sludge as the original material and the method of the phytoremediation of soil polluted by heavy metals | |
| CN102085529A (en) | Method for repairing polycyclic aromatic hydrocarbon polluted soil by using residual active sludge | |
| CN101618394A (en) | Method for restoring polycyclic aromatic hydrocarbon contaminated soil by charcoal | |
| CN104226679B (en) | A kind of method using antimicrobial plant combine d bioremediation manufactured coal gas plant contaminated soil | |
| CN103864542A (en) | Soil restoration agent made from feces of livestock and poultry as well as preparation method and application thereof | |
| CN101664756A (en) | Passivation material for in-situ restoration of soil polluted by heavy metal, and preparation and use method thereof | |
| CN108188162A (en) | A kind of serious pollution land method | |
| Chen et al. | Sustainable application for agriculture using biochar-based slow-release fertilizers: a review | |
| CN102786195A (en) | Method for synchronously treating hydrocotyle verticillata and dewatered sludge by utilizing Peace-II earthworms | |
| CN100457693C (en) | Environmental organic nutrient soil as well as preparation technique and application thereof | |
| CN104492797A (en) | Remediation method of heavy metal contaminated acidic soil | |
| CN103058717A (en) | Heavy metal treatment technology for heavy metal adsorption, dehydration and fertilizer preparation | |
| Streubel | Biochar: Its characterization and utility for recovering phosphorus from anaerobic digested dairy effluent | |
| Elkhlifi et al. | Potential role of biochar on capturing soil nutrients, carbon sequestration and managing environmental challenges: a review. Sustainability. 2023; 15: 2527 | |
| CN103539493A (en) | Preparation method of polycyclic aromatic hydrocarbon contaminated soil composting conditioner | |
| CN107626732A (en) | The method for repairing chromium-polluted soil using mineralized waste and/or composting production | |
| CN107135702B (en) | A method of cultivating rye grass on lead-polycyclic aromatic hydrocarbon pollution | |
| Lee et al. | Changes of soil properties through the remediation processes and techniques for the restoration of remediated soils | |
| CN104529101A (en) | City sludge heavy metal passivation method by using hydroxyapatite as passivating agent | |
| CN104402179A (en) | Method for passivating heavy metal in municipal sludge by adopting urea as passivator | |
| CN113149757A (en) | Method for preparing ecological restoration nutritive cube based on sludge quality of town sludge compost |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |