CN100418647C - Method for treating waste mud of drilling well by harmless process - Google Patents
Method for treating waste mud of drilling well by harmless process Download PDFInfo
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- CN100418647C CN100418647C CNB2006100220083A CN200610022008A CN100418647C CN 100418647 C CN100418647 C CN 100418647C CN B2006100220083 A CNB2006100220083 A CN B2006100220083A CN 200610022008 A CN200610022008 A CN 200610022008A CN 100418647 C CN100418647 C CN 100418647C
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- 238000005553 drilling Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000002699 waste material Substances 0.000 title claims abstract description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 54
- 238000003756 stirring Methods 0.000 claims abstract description 48
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 36
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims abstract description 19
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 18
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 18
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 16
- 229910021645 metal ion Inorganic materials 0.000 claims abstract description 16
- 231100000719 pollutant Toxicity 0.000 claims abstract description 16
- 239000007787 solid Substances 0.000 claims abstract description 16
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 claims abstract description 12
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 12
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000007844 bleaching agent Substances 0.000 claims abstract description 12
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims abstract description 11
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims abstract description 10
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 6
- 239000010440 gypsum Substances 0.000 claims abstract description 6
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 6
- 239000003463 adsorbent Substances 0.000 claims abstract description 3
- 235000006408 oxalic acid Nutrition 0.000 claims abstract description 3
- 239000007800 oxidant agent Substances 0.000 claims abstract description 3
- 230000001590 oxidative effect Effects 0.000 claims abstract description 3
- 239000002002 slurry Substances 0.000 claims description 120
- 230000000536 complexating effect Effects 0.000 claims description 15
- KBIWNQVZKHSHTI-UHFFFAOYSA-N 4-n,4-n-dimethylbenzene-1,4-diamine;oxalic acid Chemical compound OC(=O)C(O)=O.CN(C)C1=CC=C(N)C=C1 KBIWNQVZKHSHTI-UHFFFAOYSA-N 0.000 claims description 10
- 239000004115 Sodium Silicate Substances 0.000 claims description 8
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 8
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 8
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 8
- 229940037003 alum Drugs 0.000 claims description 7
- 239000001117 sulphuric acid Substances 0.000 claims description 6
- 235000011149 sulphuric acid Nutrition 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 4
- 150000007513 acids Chemical class 0.000 claims description 2
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 238000007711 solidification Methods 0.000 claims 1
- 230000008023 solidification Effects 0.000 claims 1
- 239000000839 emulsion Substances 0.000 abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000005416 organic matter Substances 0.000 abstract description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 abstract 1
- 239000005708 Sodium hypochlorite Substances 0.000 abstract 1
- 230000035515 penetration Effects 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 13
- 238000003912 environmental pollution Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- KQTVWCSONPJJPE-UHFFFAOYSA-N etridiazole Chemical compound CCOC1=NC(C(Cl)(Cl)Cl)=NS1 KQTVWCSONPJJPE-UHFFFAOYSA-N 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- Treatment Of Sludge (AREA)
Abstract
The innocent treating process of waste drilling mud includes the following steps: 1. adding industrial hydrochloric acid, sulfuric acid and/or oxalic acid into waste drilling mud through stirring in a mud pit to neutralize sodium hydroxide and sodium carbonate and complex metal ion; 2. adding oxidant bleaching powder, hydrogen peroxide and/or sodium hypochlorite through stirring to eliminate or reduce organic matter content, lower CODCr and chroma and eliminate sulfide; and 3. adding adsorbent polysodium silicate, aluminum sulfate, gypsum powder and/or magnesia through stirring to adsorb water, destroy emulsion balance of mud, alter mud performance, block outward penetration of pollutant and form solid. The present invention has relatively low treatment cost.
Description
Technical field
The present invention relates to a kind of processing method of drilling well discarded slurry, relate in particular to a kind for the treatment of waste mud of drilling well by harmless process.
Background technology
The drilling well discarded slurry is a kind of discarded object of industrial gas oil exploitation, usually be to retain in for a long time in the mud pit of drilling well field or buried in underground through the general back of handling, these methods are not owing to do harmless treatment, need take a large amount of soils, the severe contamination atmosphere, soil, groundwater resources cause the huge wasting of resources.Though some domestic after eighties oil gas fields adopt cement-based solidified method, lime base curing, the organic polymer curing is handled discarded slurry, but still has following problem:
1, in the acid of acid of no use or capacity and NaOH in the discarded slurry and sodium carbonate, make the leachate pH value of solidfied material be strong basicity, and As time goes on NaOH and sodium carbonate do not degrade, and the alkaline pollution source are embedded in the mud pit in well site for a long time or buried in underground;
2, the organic matter in the discarded slurry, sulfide is thoroughly handled, and makes the chemical oxygen demand cod of leachate
CrVery high, sometimes up to more than the 500mg/L, and it is dark especially to leach color, is brown or yellow green, and extension rate is hundreds of times, and also there is potential safety hazard in a large amount of leachings of sulfide simultaneously;
Though 3 some seal up for safekeeping, As time goes on, after confining bed destroyed, environmental pollution existed in the same old way;
4, disposal cost is higher, makes the easier selection of operator adopt simple natural air drying, simply buries mode, causes more serious environmental pollution.
Summary of the invention
The objective of the invention is to for not enough a kind for the treatment of waste mud of drilling well by harmless process, solution disposal cost height, the environmental pollution problems of providing of prior art is provided.
Method of the present invention realizes by following steps:
A, in mud pit, stir to add in hydrochloric acid or sulfuric acid or the oxalic acid at least a industrial acids and NaOH in the discarded slurry and sodium carbonate, the metal ion in the complexing mud;
B, add at least a oxidant in bleaching powder or hydrogen peroxide or the clorox in stirring and remove or reduce content of organics in the discarded slurry, reduce COD
CrAnd colourity, remove the sulfide in the mud;
Add the moisture content at least a adsorbents adsorb discarded slurry in poly sodium metasilicate or aluminum sulfate or alum or land plaster or the magnesia in C, the stirring, destroy the emulsion balance of discarded slurry, change mud property, stop pollutant, form powdery or blocks of solid to exosmosis.
The addition of said 31% technical hydrochloric acid is that the addition of 0.5～12%, 98% industrial sulphuric acid of percent by volume is that the addition of 0.5～8%, 98% industrial ethanedioic acid of percent by volume is 0.3～2.5% of a weight/volume percent.
The addition of said bleaching powder is 0.2～1% of a weight/volume percent, and the addition of hydrogen peroxide is 0.1～1% of a percent by volume, and the addition of clorox is 0.2～2.5% of a weight/volume percent.
The addition of said aluminum sulfate is 0.5～15% of a weight/volume percent, the addition of poly sodium metasilicate is 2～11% of a weight/volume percent, the addition of alum is 0.5～12% of a weight/volume percent, the addition of gypsum is 2～45% of a weight/volume percent, and magnesian addition is 2～15% of a weight/volume percent.
A kind for the treatment of waste mud of drilling well by harmless process of the present invention, according to the feature of discarded slurry own, adopt chemically treated method, with lower expense the harmful substance in the mud is handled one by one, made the leachate (by the preparation of GB5086 regulation) of drilling well discarded slurry solidfied material reach the GB8978-1996 integrated wastewater discharge standard.Discarded object after the processing is equivalent to the Chemical Physics performance of pan soil after a period of time.One deck planting soil is covered on the surface, or discarded object mixes by a certain percentage with planting soil, can satisfy the requirement of plant growth fully.Reached solution discarded slurry disposal cost height fully, the goal of the invention of problem of environmental pollution.The field trial result of use is as follows:
| Well location | Lotus flower 1-1 | Mound Xi16Jing | Chi63Jing |
| The mud that uses during drilling well | Polymer is water base | Poly-sulphur mud | Polymer is water base |
| Testing result after the processing | Up to standard | Up to standard | Up to standard |
The specific embodiment
For further disclosing technical scheme of the present invention, existing combination is implemented to be described in further detail:
Embodiment 1: the step of the drilling well discarded slurry being carried out method for innocent treatment is as follows:
A, in mud pit, stir to add in the technical hydrochloric acid (percent by volume) of discarded slurry volume 1.5% (31% concentration) and NaOH and sodium carbonate in the discarded slurry, the metal ion in the complexing mud;
B, the bleaching powder (weight/volume percent) that adds discarded slurry volume 0.2% in stirring are removed or are reduced content of organics in the discarded slurry, reduce COD
CrAnd colourity, remove the sulfide in the mud;
C, add the moisture content in poly sodium metasilicate (weight/volume percent) the absorption discarded slurry of discarded slurry volume 2% in stirring, destroy the emulsion balance of discarded slurry, change mud property, stop pollutant, form powdery or blocks of solid to exosmosis.
Embodiment 2: the step of the drilling well discarded slurry being carried out method for innocent treatment is as follows:
A, in mud pit, stir to add in the industrial sulphuric acid (percent by volume) of discarded slurry volume 0.8% (98% concentration) and NaOH and sodium carbonate in the discarded slurry, the metal ion in the complexing mud;
B, the hydrogen peroxide (percent by volume) that adds discarded slurry volume 0.1% in stirring are removed or are reduced content of organics in the discarded slurry, reduce COD
CrAnd colourity, remove the sulfide in the mud;
C, add the moisture content in aluminum sulfate (weight/volume percent) the absorption discarded slurry of discarded slurry volume 0.5% in stirring, destroy the emulsion balance of discarded slurry, change mud property, stop pollutant, form powdery or blocks of solid to exosmosis.
Embodiment 3: the step of the drilling well discarded slurry being carried out method for innocent treatment is as follows:
A, in mud pit, stir to add in the industrial ethanedioic acid (weight/volume percent) of discarded slurry volume 1.3% (98% concentration) and NaOH and sodium carbonate in the discarded slurry, the metal ion in the complexing mud;
B, the clorox (weight/volume percent) that adds discarded slurry volume 0.2% in stirring are removed or are reduced content of organics in the discarded slurry, reduce COD
CrAnd colourity, remove the sulfide in the mud;
C, add the moisture content in alum (weight/volume percent) the absorption discarded slurry of discarded slurry volume 0.5% in stirring, destroy the emulsion balance of discarded slurry, change mud property, stop pollutant, form powdery or blocks of solid to exosmosis.
Embodiment 4: the step of the drilling well discarded slurry being carried out method for innocent treatment is as follows:
A, in mud pit, stir to add in the industrial ethanedioic acid (weight/volume percent) of discarded slurry volume 0.7% (98% concentration) and NaOH and sodium carbonate in the discarded slurry, the metal ion in the complexing mud;
B, the bleaching powder (weight/volume percent) that adds discarded slurry volume 0.2% in stirring are removed or are reduced content of organics in the discarded slurry, reduce COD
CrAnd colourity, remove the sulfide in the mud;
C, add the moisture content in gypsum (weight/volume percent) the absorption discarded slurry of discarded slurry volume 2% in stirring, destroy the emulsion balance of discarded slurry, change mud property, stop pollutant, form powdery or blocks of solid to exosmosis.
Embodiment 5: the step of the drilling well discarded slurry being carried out method for innocent treatment is as follows:
A, in mud pit, stir to add in the industrial ethanedioic acid (weight/volume percent) of discarded slurry volume 0.5% (98% concentration) and NaOH and sodium carbonate in the discarded slurry, the metal ion in the complexing mud;
B, the bleaching powder (weight/volume percent) that adds discarded slurry volume 0.2% in stirring are removed or are reduced content of organics in the discarded slurry, reduce COD
CrAnd colourity, remove the sulfide in the mud;
C, add the moisture content in magnesia (weight/volume percent) the absorption discarded slurry of discarded slurry volume 2% in stirring, destroy the emulsion balance of discarded slurry, change mud property, stop pollutant, form powdery or blocks of solid to exosmosis.
Embodiment 6: the step of the drilling well discarded slurry being carried out method for innocent treatment is as follows:
A, in mud pit, stir to add in the technical hydrochloric acid (percent by volume) of discarded slurry volume 12% (31% concentration) and NaOH and sodium carbonate in the discarded slurry, the metal ion in the complexing mud;
B, the bleaching powder (weight/volume percent) that adds discarded slurry volume 1% in stirring are removed or are reduced content of organics in the discarded slurry, reduce COD
CrAnd colourity, remove the sulfide in the mud;
C, add the moisture content in poly sodium metasilicate (weight/volume percent) the absorption discarded slurry of discarded slurry volume 11% in stirring, destroy the emulsion balance of discarded slurry, change mud property, stop pollutant, form powdery or blocks of solid to exosmosis.
Embodiment 7: the step of the drilling well discarded slurry being carried out method for innocent treatment is as follows:
A, in mud pit, stir to add in the industrial sulphuric acid (percent by volume) of discarded slurry volume 5% (98% concentration) and NaOH and sodium carbonate in the discarded slurry, the metal ion in the complexing mud;
B, the hydrogen peroxide (percent by volume) that adds discarded slurry volume 1% in stirring are removed or are reduced content of organics in the discarded slurry, reduce COD
CrAnd colourity, remove the sulfide in the mud;
C, add the moisture content in poly sodium metasilicate (percentage by weight) the absorption discarded slurry of discarded slurry volume 2% in stirring, destroy the emulsion balance of discarded slurry, change mud property, stop pollutant, form powdery or blocks of solid to exosmosis.
Embodiment 8: the step of the drilling well discarded slurry being carried out method for innocent treatment is as follows:
A, in mud pit, stir to add in the industrial ethanedioic acid (weight/volume percent) of discarded slurry volume 2.5% (98% concentration) and NaOH and sodium carbonate in the discarded slurry, the metal ion in the complexing mud;
B, the clorox (weight/volume percent) that adds discarded slurry volume 2.5% in stirring are removed or are reduced content of organics in the discarded slurry, reduce COD
CrAnd colourity, remove the sulfide in the mud;
C, add the moisture content in alum (weight/volume percent) the absorption discarded slurry of discarded slurry volume 12% in stirring, destroy the emulsion balance of discarded slurry, change mud property, stop pollutant, form powdery or blocks of solid to exosmosis.
Embodiment 9: the step of the drilling well discarded slurry being carried out method for innocent treatment is as follows:
A, in mud pit, stir to add in the industrial ethanedioic acid (weight/volume percent) of discarded slurry volume 2.5% (98% concentration) and NaOH and sodium carbonate in the discarded slurry, the metal ion in the complexing mud;
B, the clorox (weight/volume percent) that adds discarded slurry volume 2.5% in stirring are removed or are reduced content of organics in the discarded slurry, reduce COD
CrAnd colourity, remove the sulfide in the mud;
C, add the moisture content in gypsum (weight/volume percent) the absorption discarded slurry of discarded slurry volume 45% in stirring, destroy the emulsion balance of discarded slurry, change mud property, stop pollutant, form powdery or blocks of solid to exosmosis.
Embodiment 10: the step of the drilling well discarded slurry being carried out method for innocent treatment is as follows:
A, in mud pit, stir to add in the industrial ethanedioic acid (weight/volume percent) of discarded slurry volume 2.5% (98% concentration) and NaOH and sodium carbonate in the discarded slurry, the metal ion in the complexing mud;
B, the clorox (weight/volume percent) that adds discarded slurry volume 2.5% in stirring are removed or are reduced content of organics in the discarded slurry, reduce COD
CrAnd colourity, remove the sulfide in the mud;
C, add the moisture content in magnesia (weight/volume percent) the absorption discarded slurry of discarded slurry volume 15% in stirring, destroy the emulsion balance of discarded slurry, change mud property, stop pollutant, form powdery or blocks of solid to exosmosis.
Embodiment 11: the step of the drilling well discarded slurry being carried out method for innocent treatment is as follows:
A, in mud pit, stir to add technical hydrochloric acid and the NaOH in the discarded slurry and the sodium carbonate of the industrial sulphuric acid (percent by volume), 0.5% (31% concentration) of discarded slurry volume 5% (98% concentration), the metal ion in the complexing mud;
B, the bleaching powder (weight/volume percent) that adds discarded slurry volume 0.2% in stirring, 1% clorox (weight/volume percent) is removed or reduce content of organics in the discarded slurry, reduces COD
CrAnd colourity, remove the sulfide in the mud;
C, the alum (weight/volume percent) that adds discarded slurry volume 2% in stirring, the moisture content in 30% gypsum (weight/volume percent) the absorption discarded slurry, destroy the emulsion balance of discarded slurry, change mud property, stop pollutant, form powdery or blocks of solid to exosmosis.
Embodiment 12: the step of the drilling well discarded slurry being carried out method for innocent treatment is as follows:
A, in mud pit, stir to add in industrial ethanedioic acid (weight/volume percent), 0.8% (31% concentration) technical hydrochloric acid of discarded slurry volume 2% (98% concentration) and NaOH and sodium carbonate in the discarded slurry, the metal ion in the complexing mud;
B, the clorox (weight/volume percent) that adds discarded slurry volume 1% in stirring, 0.8% bleaching powder (weight/volume percent) is removed or reduce content of organics in the discarded slurry, reduces COD
CrAnd colourity, remove the sulfide in the mud;
C, the aluminum sulfate (weight/volume percent) that adds discarded slurry volume 5% in stirring, the moisture content in 8% magnesia (weight/volume percent) the absorption discarded slurry, destroy the emulsion balance of discarded slurry, change mud property, stop pollutant to exosmosis, form powdery or blocks of solid.
Embodiment 13: the step of the drilling well discarded slurry being carried out method for innocent treatment is as follows:
A, in mud pit, stir to add in the industrial sulphuric acid of industrial ethanedioic acid (weight/volume percent), 0.6% (98% concentration) of discarded slurry volume 1% (98% concentration) and NaOH and sodium carbonate in the discarded slurry, the metal ion in the complexing mud;
B, the hydrogen peroxide (percent by volume) that adds discarded slurry volume 0.5% in stirring, 0.8% bleaching powder (percentage by weight) is removed or reduce content of organics in the discarded slurry, reduces COD
CrAnd colourity, remove the sulfide in the mud;
C, the aluminum sulfate (weight/volume percent) that adds discarded slurry volume 6% in stirring, the moisture content in 6% poly sodium metasilicate (weight/volume percent) the absorption discarded slurry, destroy the emulsion balance of discarded slurry, change mud property, stop pollutant to exosmosis, form powdery or blocks of solid.
Claims (4)
1. treating waste mud of drilling well by harmless process, its concrete steps are as follows:
(1) in mud pit, stir to add in hydrochloric acid or sulfuric acid or the oxalic acid at least a industrial acids and NaOH and sodium carbonate in the discarded slurry, the metal ion in the complexing mud;
(2) add at least a oxidant in bleaching powder or hydrogen peroxide or the clorox in stirring and remove or reduce content of organics in the discarded slurry, reduce COD
CrAnd colourity, remove the sulfide in the mud;
(3) add the moisture content at least a adsorbents adsorb discarded slurry in poly sodium metasilicate or aluminum sulfate or alum or land plaster or the magnesia in the stirring, the adhesive solidification discarded slurry stops pollutant to exosmosis, forms powdery or blocks of solid.
2. according to the said a kind for the treatment of waste mud of drilling well by harmless process of claim 1, it is characterized in that: the addition of said 31% technical hydrochloric acid is 0.5～12% of a percent by volume, the addition of 98% industrial sulphuric acid is that the addition of 0.5～8%, 98% industrial ethanedioic acid of percent by volume is 0.3～2.5% of a weight/volume percent.
3. according to the said a kind for the treatment of waste mud of drilling well by harmless process of claim 1, it is characterized in that: the addition of said bleaching powder is 0.2～1% of a weight/volume percent, the addition of hydrogen peroxide is 0.1～1% of a percent by volume, and the addition of clorox is 0.2～2.5% of a weight/volume percent.
4. according to the said a kind for the treatment of waste mud of drilling well by harmless process of claim 1, it is characterized in that: the addition of said aluminum sulfate is 0.5～15% of a weight/volume percent, the addition of poly sodium metasilicate is 2～11% of a weight/volume percent, the addition of alum is 0.5～12% of a weight/volume percent, the addition of gypsum is 2～45% of a weight/volume percent, and magnesian addition is 2～15% of a weight/volume percent.
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| CNB2006100220083A CN100418647C (en) | 2006-09-30 | 2006-09-30 | Method for treating waste mud of drilling well by harmless process |
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| CNB2006100220083A CN100418647C (en) | 2006-09-30 | 2006-09-30 | Method for treating waste mud of drilling well by harmless process |
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| CN101538096B (en) * | 2009-04-24 | 2011-04-06 | 司军 | Method for processing waste slurry |
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|---|---|---|---|---|
| US5108226A (en) * | 1990-10-18 | 1992-04-28 | Mobil Oil Corporation | Technique for disposal of drilling wastes |
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| CN1944280A (en) | 2007-04-11 |
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