CN105499265B - Waste water-base drilling liquid solid formation land resource method - Google Patents
Waste water-base drilling liquid solid formation land resource method Download PDFInfo
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- CN105499265B CN105499265B CN201510937949.9A CN201510937949A CN105499265B CN 105499265 B CN105499265 B CN 105499265B CN 201510937949 A CN201510937949 A CN 201510937949A CN 105499265 B CN105499265 B CN 105499265B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
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Abstract
The invention discloses a kind of waste water-base drilling liquid solid formation land resource technologies, for the characteristic of pollutant in waste drilling mud, it proposes and first carries out brokenly glue to waste drilling mud, chemistry separation of solid and liquid, the technique for recycling soil and plant to carry out soil processing to mud solid phase are realized in flocculation.The present invention successfully improves domestic existing dumping mud treatment technology at present, is stabilized using chemical method realization to the pollutant in waste mud；Waste drilling fluid soilization processing is being reached by soil environment quality secondary standard using chemistry and biological method；During avoiding discarded slurry curing process, the problem of land occupation resource；It solves solidified slip to increase at any time, the environmental risk of pollutant leakage.Have the advantages that compared with the domestic prior art treatment process it is simple, it is practical, have large-scale application.Therefore, the present invention has novelty, creativeness and advance and very high practical application value.
Description
Technical field
The present invention relates to pollution controls during oilfield drilling, and in particular to waste water-base drilling liquid solid formation soil money
Source technology.
Background technique
Rejected well drilling liquid has the characteristics that a little more, wide, pollutant kind is more, and at home, treatment process and method are more,
Do not form unified, specification processing method and technique.Curing process is mainly used at present.Curing process is mainly to drilling well
Curing agent is added in discarded slurry, so that rejected well drilling liquid is converted to solid phase, then fills, to avoid the pollution and danger to environment
Evil.The main component of curing agent is cement, waterglass, Al2(SO4)3Deng.Hardener dose is 150~200kg/m3, at solidification
Reason expense is in 250~300 yuan/m3, but volume increase about 1/3 after solidifying, and landfill needs to occupy certain land resource, and
As time increases, pollutant has the risk of leakage.
Application No. is 001243292 patent of invention disclose a kind of waste water-base drilling liquid solidification processing method and its
Curing agent, it is made of waste water-base drilling liquid and hardener formula.Inorganic molysite flocculating agent 1~6%, clay absorbent
0.1~0.6%, magnesia 1~6% and cementing agent 1~10%.Should match can be such that waste water-base drilling liquid solidified through 3~6 days
Form the solidified body that there is fine water resistant to impregnate ability and some strength afterwards, solidified body leach pH≤7.5 of water, total Cr≤
1.5mg/L, CODCr≤200mg/L, petroleum-type≤10mg/L.This solidification processing method treatment process is simple, with short when processing,
Curing agent is easy purchase, is suitble to high-volume harmless treatment rejected well drilling liquid.Curing process landfill needs to occupy certain soil
Resource, and as time increases, pollutant has risk of leakage.
Application No. is the patents of invention of CN02117325 to disclose a kind of coagulating and dewatering treatment method for waste drilling fluid, specifically
It is that inorganic aluminate flocculating agent and organic cation polyelectrolyte flocculant solution are added in rejected well drilling liquid, it is quiet after mixing evenly
Only coagulation 10~15 minutes；After the de- steady dehydration of rejected well drilling liquid chemistry completely, then by agglomerate flocculate and part wadding water outlet from
Heart dehydration；Inorganic aluminate flocculating agent is preferably alchlor, and usage amount is 2000~3500mg/L；The poly- electrolysis of organic cation
Matter flocculant is the organic cation polyelectrolyte with quaternary ammonium salt cationic functional group, in inorganic aluminate flocculating agent and organic sun
The cohesion of cationic polyelectrolyte flocculant promotes the fine particle to suspend to gather into bulk flocculate under flocculated synergistic effect,
Through centrifugal dehydration, it is finally reached the purpose of rejected well drilling liquid separation of solid and liquid.Although the good solid-liquid for realizing rejected well drilling liquid point
From, but harmless treatment rejected well drilling liquid is not carried out, there is also certain environmental risks.
Application No. is the patents of invention of CN200710048288 to disclose a kind of waste drilling fluid cured resin preparation standard burning
The method for tying brick.Solidfied material after rejected well drilling liquid is solidified is mixed with clay minerals matter and interior fire coal, as brick-making raw material
By standard sintered brick technique brickmaking, the weight percent of mixed raw material each component is solidfied material 1~35%, clay minerals matter 48
~80%, interior coal-fired 15~20%.The present invention solves solidfied material will become lean property material in high-temperature sintering process, influence to make
Brick in terms of problem not up to standard, the present invention mixes solidfied material in brick-making raw material, and resulting fired brick is completely full
Sufficient national standard to reduce the discharge of solidfied material, processing, and turns waste into wealth.Although the invention is to waste drilling fluid cured resin
Harmless treatment is carried out, but the exhaust gas generated during baking bricks may contain poisonous and harmful substance, cause secondary pollution, simultaneously
Energy consumption is higher.
Application No. is the patents of invention of CN200910079166 to disclose a kind of Loess Tableland waste drilling fluid soil reparation
Process absolutely stirs the calcium aluminium salt for being added 1.0~2.0% containing solid weight by rejected well drilling liquid；It is quiet it is heavy completely after
Moisture is extracted out, containing solid weight by extraction water is that 0.015~0.02% compound calcium salt is absolutely added；Contain by rejected well drilling liquid
Gu weight is that absolutely the loess of 0.3~0.5% humic acid of addition and the sawdust of loess weight 2~6%, sawdust are grey or dry
The volume ratio of surplus drilling fluid solid is 1: 1 after grass, loess additional amount and dehydration；Using chemistry-microbial association processing method,
Using local natural loess resource, simple process does not add any solidification medicament, with lower expense by the nocuousness in drilling fluid
Substance is handled, and solves that Deal With Drilling Fluid is costly, handles not thorough enough problem, while not being destroyed after handling original
Soil system can reach the requirement of soil second ploughing.Although this method simple process, any solidification medicament is not added, it can after processing
Reach the requirement of soil second ploughing, but adding certain chemical agent can make rehabilitation cost increase, soil is using preceding famine
The useless time is long, ignores plant in recovery process and is unfavorable for sustainable development for the catharsis of soil.
Summary of the invention
The present invention provides waste water-base drilling liquid solid formation land resource method, there is that treatment process is simple, practicability
By force, has the advantages of large-scale application.
Waste water-base drilling liquid solid formation land resource technology, the chemistry including waste drilling mud are separated by solid-liquid separation skill
Art, separating liquid pollutant analysis technology, separating liquid solid-phase contaminants analytical technology, waste drilling mud soil technology, soil
Quality Index Analysis technology is observed and recorded with plant growth situation.
The chemical solid-liquid separation technique of the waste drilling mud includes waste drilling mud conventional parameter determination techniques, gives up
It abandons drilling mud and breaks glue, flocculated chemical solid-liquid separation technique.
The waste drilling mud conventional parameter determination techniques include waste drilling mud moisture determination, discarded brill
Well test for specific gravity of slip, the preparation of waste drilling mud leachate and waste drilling mud leachate suspended matter determination.
Method and step: the waste drilling mud moisture determination (1) claims about 10g sample (being accurate to 0.01g), sets
Enter in the aluminium box of known weight, be put into baking oven, drying to constant weight at a temperature of 105~110 DEG C (about 6h), is put into drying after taking-up
It is cooling in device；(2) aluminium box is taken out out of drier, weighing is accurate to 0.01g.；(3) calculation formula:
In formula: W- moisture content (%)；
g0Aluminium box weight (g)；
g1Aluminium box+wet sample weight (g)；
g2Aluminium box+drying sample weight (g).
Method and step: the waste drilling mud gravity test (1) weighs certain mass M original mud sample, is put into dress
There is known volume V1Water graduated cylinder in, read and liquid volume V in graduated cylinder be added after sample2；(2) calculation formula:
P=M/ (V2-V1) (2)
In formula: ρ-mud balance (g/L)；
M- quality of mud fluid (g)；
V1Graduated cylinder inner volume (L)；
V2Mud and water volume (L).
The waste drilling mud leachate preparation, mainly in conjunction with mud feature and referring to HJ557-2010, " solid is useless
Object Leaching leaching method horizontal vibration method ", obtained mud leaches liquid and preparation method thereof.Its method and step: (1) accurate to measure
Two parts of 50ml or 100g waste drilling mud samples are respectively placed in the stuffed conical flask of 2L, then according to 10: 1 ratio of liquid-solid ratio
It is each that deionization pure water is added；(2) stuffed conical flask is vertically fixed on reciprocating horizontal oscillator, adjusts oscillator frequency
For 110 ± 10 times/min, amplitude 40mm, conical flask is removed after shaking 8h at room temperature, stands 16h；(3) filtering tool plug taper
Bottle in upper liquid (use suction filtration mode, filter sizes be 0.45 μm) to get arrive waste drilling mud leachate.
Method and step: the waste drilling mud leachate suspended matter determination method (1) is measured and is sufficiently mixed uniformly
Sample 100ml suction filtration is made moisture all pass through filter membrane, then is continuously washed three times with each 10ml distilled water, and suction strainer is continued
To remove traces of moisture.Stop after filtering, the filter membrane that carefully taking-up is loaded with suspended matter is placed in the weighing bottle of former constant weight, is moved into and is dried
It is moved into drier after drying 1h at 103~105 DEG C in case, makes to be cooled to room temperature, claim its weight.It dries repeatedly, is cooling, claiming
Amount, until the weight difference < 0.4mg weighed twice；(2) calculation formula:
C=(A-B) * 106/V (3)
In formula: concentration of suspension (mg/L) in C- water；
A- suspended matter+filter membrane+weighing bottle weight (g)；
B- filter membrane+weighing bottle weight (g)；
V- volume of sample (ml).
The waste drilling mud breaks glue, flocculated chemical solid-liquid separation technique, method and step: (1) to adjust discarded
Concentration of hydraulic mixture；(2) a certain amount of gel breaker for being configured to solution is added, 5min is stirred quickly with 100r/min speed, stands broken glue
After 1h；(3) a certain amount of PAC is added, 5min is mixed slowly with 50r/min speed；(4) PAM solution is added after stirring, with 50r/
Min speed mixes slowly until the mud formation in beaker after standing 30min, moves into centrifuge, using 3000r/ compared with big flocculating body
The revolving speed of min is centrifuged 10min, obtains being separated by solid-liquid separation phase.
Discarded slurry density after the adjusting concentration is 1.2~1.3g/ml
Best gel breaker when handling waste drilling mud is HGDJ-1, and dosage is 1.8~3g/ mud
100ml, gel breaking time 30min.
Optimum flocculent when the described processing waste drilling mud is PAC and PAM, and dosage is respectively 1.2~2.4g/
Mud 100ml, 0.01~0.05g/ mud 100ml.
The separating liquid pollutant analysis technology, mainly using extension rate method, dichromate titration, glass electrode method,
Silver nitrate titration method, spectrophotometry, gravimetric method, atomic absorption spectrophotometry and flame atomic absorption method, respectively to separation
Coloration, CODcr, pH, Cl-, oil content, suspended matter, lead and copper in liquid are measured, with evaluating chemical method to mud solid-liquid point
From effect.
The separating liquid solid-phase contaminants analytical technology, separating liquid solid-phase contaminants extracting method use HJ557-2010
" solid waste Leaching leaching method horizontal vibration method ", and Cl-, Pb, Cu, Cd, Cr, CODcr, stone in Detection and Extraction object
Oil content obtains the ratio of mud solid formation and soil mixing, makes after mixing that every pollutant index meets soil in soil
Environmental quality standards requirement.
The ratio that the mud solid formation and soil are mixed is soil: mud is 2: 1~6: 1.
The plant-microorganism combined remediation technology coexists system using plant and rhizospheric microflora of soil and purifies soil
Organic and inorganic pollution in earth, the i.e. mycorrhizal fungi Yu plant of plant root zone form synbiosis, and have unique enzyme way
Diameter, to the organic matter that cannot be individually converted by bacterium of degrading；Plant root exudation have stimulated the transformation of bacterium；Plant
Existence place and transferable oxidation can be also provided for microorganism, the aerobic transformation of root zone is enable to be normally carried out.
The heavy metal-polluted soil determination techniques, using NY/T1613-2008, " soil quality determining heavy metals chloroazotic acid flows back
Clear up atomic absorption method ", measure wherein heavy metal Pb, Cu, Cd, Cr content；Using HJ557-2010 " solid waste Leaching
Leaching method horizontal vibration method " leachate is extracted, measure CODcr, petroleum content.
The plant growth situation observes and records, essential record plant germination rate and growing height, and at one section of plant
After period, harvesting, sunning dry doubling are crushed.Content of beary metal in measurement resolution sample, analysis plant is to Metal uptake rate and soil
Repair situation in ground.
Beneficial effects of the present invention:
The present invention successfully improves domestic existing dumping mud treatment technology at present, is realized using chemical method to waste mud
In pollutant stabilized；Waste drilling fluid soilization processing is being reached by soil environment using chemistry and biological method
Mass secondary standard；During avoiding discarded slurry curing process, the problem of land occupation resource；Solve solidified slip with
Time increases, the environmental risk of pollutant leakage., the tool simple, practical with treatment process compared with the domestic prior art
The advantages of standby large-scale application.Therefore, the present invention has novelty, creativeness and advance and very high practical application valence
Value.
Detailed description of the invention
Fig. 1 is techniqueflow chart of the invention.
Specific embodiment
As shown in Figure 1, waste water-base drilling liquid solid formation land resource method, the chemistry including waste drilling mud is solid
Liquid isolation technics, separating liquid pollutant analysis technology, separating liquid solid-phase contaminants analytical technology, waste drilling mud soil skill
Art, Soil Quality Indexes analytical technology and plant growth situation observe and record.
Conventional parameter measurement is carried out to waste drilling mud first, includes waste drilling mud moisture determination, discarded brill
Well test for specific gravity of slip, the preparation of waste drilling mud leachate and waste drilling mud leachate suspended matter determination, four kinds of routines
Parametric measurement method is listed below:
1, waste drilling mud moisture determination, method and step: (1) claiming about 10g sample (being accurate to 0.01g), merging
In the aluminium box of known weight, it is put into baking oven, drying to constant weight at a temperature of 105~110 DEG C (about 6h), is put into drier after taking-up
Interior cooling；(2) aluminium box is taken out out of drier, weighing is accurate to 0.01g.；(3) calculation formula:
In formula: W- moisture content (%)；
g0Aluminium box weight (g)；
g1Aluminium box+wet sample weight (g)；
g2Aluminium box+drying sample weight (g).
2, method and step: waste drilling mud gravity test (1) weighs certain mass M original mud sample, is put into and is equipped with
Known volume V1Water graduated cylinder in, read and liquid volume V in graduated cylinder be added after sample2；(2) calculation formula:
P=M/ (V2-V1) (2)
In formula: ρ-mud balance (g/L)；
M- quality of mud fluid (g)；
V1Graduated cylinder inner volume (L)；
V2Mud and water volume (L).
3, prepared by waste drilling mud leachate, mainly in conjunction with mud feature and referring to HJ557-2010 " solid waste
Leaching leaching method horizontal vibration method ", obtained mud leaches liquid and preparation method thereof.Its method and step: (1) two are accurately measured
Part 50ml or 100g waste drilling mud sample is respectively placed in the stuffed conical flask of 2L, then each according to 10: 1 ratio of liquid-solid ratio
Deionization pure water is added；(2) stuffed conical flask is vertically fixed on reciprocating horizontal oscillator, adjusting oscillator frequency is
110 ± 10 times/min, amplitude 40mm remove conical flask after shaking 8h at room temperature, stand 16h；(3) stuffed conical flask is filtered
Interior upper liquid (using suction filtration mode, filter sizes are 0.45 μm) is to get arriving waste drilling mud leachate.
4, method and step: waste drilling mud leachate suspended matter determination method (1) measures and is sufficiently mixed uniform examination
Sample 100ml suction filtration, makes moisture all pass through filter membrane, then is continuously washed three times with each 10ml distilled water, continue suction strainer with
Remove traces of moisture.Stop after filtering, the filter membrane that carefully taking-up is loaded with suspended matter is placed in the weighing bottle of former constant weight, moves into baking oven
In at 103~105 DEG C dry 1h after move into drier in, make to be cooled to room temperature, claim its weight.It dries repeatedly, is cooling, claiming
Amount, until the weight difference < 0.4mg weighed twice；(2) calculation formula:
C=(A-B) * 106/V (3)
In formula: concentration of suspension (mg/L) in C- water；
A- suspended matter+filter membrane+weighing bottle weight (g)；
B- filter membrane+weighing bottle weight (g)；
V- volume of sample (ml).
According to the conventional parameter of surveyed waste drilling mud, carries out waste drilling mud and break glue, flocculated chemical solid-liquid point
From method and step: (1) adjusting discarded slurry concentration；(2) a certain amount of gel breaker for being configured to solution is added, with 100r/min
Speed quickly stirs 5min, after standing broken glue 1h；(3) a certain amount of PAC is added, 5min is mixed slowly with 50r/min speed；(4)
PAM solution is added after stirring, is mixed slowly with 50r/min speed until the mud in beaker is formed compared with big flocculating body, standing
After 30min, centrifuge is moved into, 10min is centrifuged using the revolving speed of 3000r/min, obtains being separated by solid-liquid separation phase.
Discarded slurry density after adjusting concentration in practical operation is 1.2~1.3g/ml.
Best gel breaker when handling waste drilling mud is HGDJ-1, and dosage is 1.8~3g/ mud 100ml, breaks glue
Time 30min.
Optimum flocculent when handling waste drilling mud is PAC and PAM, and dosage is respectively 1.2~2.4g/ mud
100ml, 0.01~0.05g/ mud 100ml.
The pollutant of separating liquid is analyzed after separation of solid and liquid, mainly uses extension rate method, dichromate titration, glass
Electrode method, silver nitrate titration method, spectrophotometry, gravimetric method, atomic absorption spectrophotometry and flame atomic absorption method, respectively
Coloration, CODcr, pH, Cl-, oil content, suspended matter, lead and copper in separating liquid is measured, with evaluating chemical method to mud
Solid-liquid separation effect.
Then separating liquid solid-phase contaminants are analyzed, separating liquid solid-phase contaminants extracting method uses HJ557-2010
" solid waste Leaching leaching method horizontal vibration method ", and Cl-, Pb, Cu, Cd, Cr, CODcr, stone in Detection and Extraction object
Oil content obtains the ratio of mud solid formation and soil mixing, makes after mixing that every pollutant index meets soil in soil
Environmental quality standards requirement.
The ratio that mud solid formation and soil are mixed in Practical Project is soil: mud is 2: 1~6: 1.
Conventional soil is mixed in proportion with through coagulation, the waste drilling mud solid portion being obtained by filtration, is sufficiently mixed
After can planting plants in the soil, before plantation the vegetable seeds that will be planted is impregnated a few hours in water, is conducive to germination.
Sample segment is taken to dry in the sun again 2 days.Mud block wait dry in comminution and does not glue after finger kneading
Hand, the mud moisture content after showing sunning is very low, and the rejecting of the sundries such as crushed stone, branch in soil dry
Fall, pulverized with small shovel soil and carry out sieving with the sieve of 10 mesh, pack carries out Soil Quality Indexes detection, and solid mud is used
Same method processing.
Heavy metal-polluted soil determination techniques, using NY/T1613-2008, " the reflux resolution of soil quality determining heavy metals chloroazotic acid is former
Sub- absorption process ", measure wherein heavy metal Pb, Cu, Cd, Cr content；Using " the solid waste Leaching leaching side HJ557-2010
Method horizontal vibration method " leachate is extracted, measure CODcr, petroleum content.
Chloroazotic acid reflux resolution NY/T1613-2008 extracts heavy metal-polluted soil method: (1) accurately weighing about 1g and (be accurate to
The pedotheque for 0.0001g) passing through 0.149mm aperture sieve adds a little distilled water wetting soil sample, adds 3~4 small beades；Add
Enter 10ml nitric acid solution, infiltrate entire sample, (nitric acid and organic matter in soil are anti-by heating 20min under slight boiling condition on electric hot plate
Remainder about 6~7ml after answering is added 20ml hydrochloric acid with next step and still remains about chloroazotic acid ratio)；20ml hydrochloric acid, lid is added
Upper surface ware, is placed on electric hot plate and heats 2h, and chloroazotic acid is kept to be in obvious slight boiling condition；Surface plate is removed, whole acid solutions are caught up with
Matter wet salt state is added the dissolution of 10ml water, is filtered hot to constant volume in 50ml volumetric flask.
The observation of plant growth situation, essential record plant germination rate and growing height, and after one period of plant, it receives
It cuts, dry dry doubling crushing.Content of beary metal in measurement resolution sample, analyzes plant to Metal uptake rate and land remediation feelings
Condition.
After the growth in one period, harvesting, sunning dry doubling are crushed.Content of beary metal in measurement resolution sample, analysis
Plant is to Metal uptake rate.Plant is cleared up using GB/T5009.12-2003 Ashing auxiliary method: (1) weighing and dries plant
Sample 1.0g~5.0g is in porcelain crucible for strain, and 1ml~2ml excellent pure grade nitric acid is added, and impregnates 1h or more, crucible is placed in adjustable
It on electric furnace, is carefully evaporated, carbonizes until not smoldering；(2) it is transferred in high temperature furnace, 550 DEG C of constant temperature 2h, after taking out, being cooling, adds
Few drops of concentrated nitric acids are in the sample ash in crucible, then are transferred in 550 DEG C of high temperature furnaces, continue to be ashed 1h~2h, to sample at lime
Shape；(3) after taking-up is let cool in high temperature furnace, with concentrated nitric acid (volume fraction 1%) dissolved samples ash, solution is quantified into immigration
It in 5ml or 10ml volumetric flask, is mixed well after constant volume, as test solution.Meanwhile blank control is done according to the above method.
Embodiment 1
Before plantation, the mud that volume is 5L is added in water spinach potted plant experiment in every plastic tub by Anti-seeping technology
With soil mixture, mud: soil ratio (volume ratio mixing) is 0: 1,1: 1,1: 2,1: 4,1: 6, and each proportion does two in parallel
Part.By selecting, the seed that wherein particle is smaller, not full abandons the water spinach seed of plantation.Then water is being filled with
5h is impregnated in beaker, plants 100 water spinach seeds in every basin.When plantation, 100 water spinach seeds are uniformly spread on soil layer
On, then after cover about 2cm soil sample again, gently uniformly watering.
The sprouting of water spinach seed need to control temperature and be maintained at 15 DEG C or more, and thermophilic is 25~30 DEG C, and 2d watering is primary, make soil
Earth moisture content periodically loosens the soil to upper layer of soil hardened to prevent up to 60%.
Water spinach initial planting observes and records germination situation, periodic measurement plant strain growth height daily.It grew
The abnormal phenomenon that journey occurs, record and analyze reason in time.Observe the first bud of water spinach germinating time, the budding situation after 7d,
It germinates period, relative germination rate, record the results are shown in Table 1.
1 discarded slurry of table germinates to water spinach and growth effect
As can be seen from Table 1: (1) solid formation after dumping mud treatment has water spinach germination apparent unfavorable
It influences；(2) since the mud addition germination period is extended, illustrate heavy metal in mud and organic pollutant to water spinach
Seed development has inhibiting effect.
By the growing height measurement periodically to water spinach, obtain mud additive amount and water spinach growing height have it is close
System.Therefore, as long as mud and soil mixed proportion control in the reasonable scope, land treatment systems Discarded Drilling Materials mud can be can use
Slurry, and the reduction of water spinach yield will not be made.
It after plantation, leaies through to soil in basin, water spinach well developed root system is stretched over every nook and cranny in basin, and soil is by firmly solid
It is fixed.Since root system of plant and Soil Microorganism act on, soil color is than becoming deep before plantation.Simultaneously because root system acts on,
The water-holding capacity of soil is remarkably reinforced.
Soil sample after acquisition plantation, soil sample is put and is spread out on the plastic film, natural air drying picks sundries, in quartz
It is ground in mortar, it is spare by 100 mesh nylon mesh.2 see the table below to pollutant analysis result in soil sample:
Soil root system analyzes result mg/kg after the plantation of table 4-3 water spinach
As shown in Table 2, the content of beary metal of (1) after plantation in soil sample has different degrees of decline.Due to,
Water spinach is different to different heavy metal tolerance degrees, therefore also has gap to the purifying rate of heavy metal, wherein to the purifying rate of Cd
It is lower；(2) CODcr decline is obvious in soil sample, and after illustrating water spinach plantation, soilization processing is to the organic contamination in mud
Object purification is obvious；(3) also declining by the oil content in the drilling mud of land treatment systems, showing micro- life in water spinach and soil
Object also has degradation catharsis very well to petroleum-type.
After plantation in 50 days, water spinach is gathered in, sunning dry doubling crushes.Plant is cleared up, was cleared up
Sample metal assay weight result afterwards see the table below 3.
Analysis of Heavy Metal result mg in 3 water spinach plant of table
As shown in Table 3: (1) in mud and soil mixed system, 90% or more of heavy metal reduction amount is due to water spinach
To its absorption.(2) water spinach is kept substantially same level to same heavy metal species yield, illustrates higher concentration weight
Metal soil will not cause heavy metal in water spinach to increase.(3) when mud: after soil reaches 1: 4, pollutant is to plant in mud
Growth effect is little；(4) COD in drilling mud and petroleum-type have in the preferable degradation effect of soil, will not influence water spinach
And corn growth；(5) it is planted after discarded slurry is mixed with soil after processing, land resource can be converted to, reduced at solidification
Reason is to appropriation of land.
Embodiment 2
Corn potted plant experiment, before plantation, be added in every plastic tub by Anti-seeping technology mud that volume is 5L with
Soil mixture, mud and soil ratio (volume ratio mixing) are respectively 0: 1,1: 1,1: 2,1: 4,1: 6, and each proportion is done in parallel
Two parts.By selecting, the seed that wherein particle is smaller, not full abandons the water spinach seed of plantation.Then water is being filled with
Beaker in impregnate 5h, in every basin in basin plant 50 corn seeds.When plantation, 50 seeds are uniformly spread on soil layer
On, then after cover about 4cm soil sample again, gently uniformly watering.
The optimum temperature of corn seed germination is 25~30 DEG C, and 2d pours a water, and soil moisture content is made to reach 60% or more,
It periodically loosens the soil to upper layer of soil hardened to prevent.
Corn planting initial stage observes and records germination situation, periodic measurement plant strain growth height daily.Growth course
The abnormal phenomenon of appearance will record and analyze reason in time.Budding situation after observing corn seed the first bud germinating time and 7d,
Experimental result is shown in the following table 4.
4 discarded slurry of table is to corn germination and growth effect
Available by table 4: (1) solid phase after dumping mud treatment has more significant influence to corn seed germination, with
Mud addition and the increase of ratio, germination percentage gradually decreases；(2) when mud additive amount is big in soil, heavy metal therein
And organic pollutant has compared with high inhibition effect corn seed development.
Pollutant inhibits the bioactivity of corn seed in mud, and sprouting time and germination period is caused to be extended.
Corn has certain tolerance degree to pollutant in mud simultaneously, both can benefit as long as controlling mud and soil adding proportion
With land treatment systems waste drilling mud, and will not excessive influence corn growth.
It after plantation, leaies through to soil in basin, since root system of plant and Soil Microorganism act on, soil color is than kind
Have before plant and is obviously improved.Simultaneously because root system acts on, the enhancing of soil water storage ability.
Soil sample after acquisition plantation, soil sample is put and is spread out on the plastic film, natural air drying picks sundries, in quartz
It is ground in mortar, it is spare by 100 mesh nylon mesh.5 see the table below to pollutant analysis result in soil sample.
Soil root system analyzes result mg/kg after 5 corn planting of table
As shown in Table 5: (1) content of beary metal after plantation in soil sample has different degrees of decline.Due to,
Corn is different to different heavy metal tolerance degrees, therefore also has gap to the purifying rate of heavy metal, wherein to the clean-up effect of Cu
Preferably；(2) for same heavy metal after planting, the amount of reduction is close, illustrate corn be to its absorptivity it is similar, not because of its concentration
Variation and change, illustrate that corn absorbs the needs of mainly nutrition to it, rather than excess accumulation；(3) after planting, soil sample
Middle CODcr decline is obvious, and it is obvious to illustrate that soilization processing purifies the organic pollutant in mud；(4) by land treatment systems
Oil content in drilling mud is also declining, and shows that plant and Soil Microorganism also have degradation purification very well to make to petroleum-type
With.
After plantation in 60 days, plant is gathered in, sunning dry doubling crushes.Plant is cleared up, is cleared up
Later sample determining heavy metals result see the table below 6.
Analysis of Heavy Metal result mg in 6 plant of table
As shown in Table 6: (1) in mud and soil mixed system, 91% or more of heavy metal reduction amount is due to corn pair
Its absorption；(2) corn is kept substantially same level to same heavy metal species yield；(3) mud is mixed with soil
In system, 90% or more of heavy metal reduction amount is the absorption due to plant to it；(4) work as mud: soil reaches 1: 4
Afterwards, pollutant influences less plant growth in mud；(5) COD in drilling mud and petroleum-type have preferably drops in soil
Effect is solved, will not influence water spinach and corn growth；(6) it plants, can convert after discarded slurry is mixed with soil after processing
At land resource, curing process is reduced to appropriation of land.
Claims (6)
1. waste water-base drilling liquid solid formation land resource method, chemical solid-liquid separation technique including waste drilling mud,
Separating liquid pollutant analysis technology, separating liquid solid-phase contaminants analytical technology, waste drilling mud soil technology, soil quality
Index analysis technology is observed and recorded with plant growth situation；
The chemical solid-liquid separation technique of the waste drilling mud includes waste drilling mud conventional parameter determination techniques, discarded brill
Well mud breaks glue, flocculated chemical solid-liquid separation technique；The waste drilling mud conventional parameter determination techniques include discarded bore
The moisture determination of well mud, waste drilling mud gravity test, the preparation of waste drilling mud leachate are soaked with waste drilling mud
Liquid suspended matter determination out；
Waste drilling mud soil technology includes plant-microorganism combined remediation technology；
The Soil Quality Indexes analytical technology includes the horizontal vibration method skill of heavy metal-polluted soil determination techniques and Petroleum Determination
Art；
" solid waste Leaching leaching method is horizontal using HJ557-2010 for the separating liquid solid-phase contaminants extracting method
Succusion ", and Cl-, Pb, Cu, Cd, Cr, CODcr, petroleum content in Detection and Extraction object, obtain mud solid formation and soil
Mixed ratio, makes after mixing that every pollutant index meets standard of soil environment quality requirement in soil；
The ratio that the mud solid formation and soil are mixed is soil: mud is 2: 1~6: 1；
The growing height of plant growth situation the record plant germination rate and plant, and after one period of plant, it gathers in, dry in the air
Dry doubling is shone to crush；Content of beary metal in measurement resolution sample, analyzes plant to Metal uptake rate and land remediation situation.
2. waste water-base drilling liquid solid formation land resource method according to claim 1, which is characterized in that the place
Manage waste drilling mud when flocculant be PAC and PAM, dosage be respectively 1.2~2.4g/ mud 100ml, 0.01~
0.05g/ mud 100ml.
3. waste water-base drilling liquid solid formation land resource method according to claim 1, which is characterized in that described point
Chaotropic pollutant analysis technology is surveyed to coloration, CODcr, pH, Cl-, oil content, suspended matter, lead and the copper in separating liquid
It is fixed, with evaluating chemical method to mud solid-liquid separation effect.
4. waste water-base drilling liquid solid formation land resource method according to claim 1, which is characterized in that the plant
Organic in system purification soil and inorganic pollution coexists using plant and rhizospheric microflora of soil in object-microbial association recovery technique
Object.
5. waste water-base drilling liquid solid formation land resource method according to claim 1, which is characterized in that the soil
Earth determining heavy metals technology uses NY/T1613-2008 " soil quality determining heavy metals chloroazotic acid reflux resolution atomic absorption method ",
Measure wherein content of beary metal.
6. waste water-base drilling liquid solid formation land resource method according to claim 1, which is characterized in that the soil
The horizontal oscillations law technology of earth Petroleum Determination uses HJ557-2010 " solid waste Leaching leaching method horizontal oscillations
Method " leachate is extracted, measure CODcr and petroleum content.
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| CN112282679A (en) * | 2020-11-16 | 2021-01-29 | 陕西延长石油（集团）有限责任公司 | Method and device for generating water-based drilling waste residue curing treatment formula |
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Application publication date: 20160420 Assignee: Shaya new oil energy environmental protection technology Co.,Ltd. Assignor: SOUTHWEST PETROLEUM University Contract record no.: X2021510000051 Denomination of invention: Land resource utilization method of solid matter of waste water-based drilling fluid Granted publication date: 20190222 License type: Common License Record date: 20211011 |