CN101580336B - Processing method of sludge containing oil and methanol - Google Patents
Processing method of sludge containing oil and methanol Download PDFInfo
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- CN101580336B CN101580336B CN2009100857447A CN200910085744A CN101580336B CN 101580336 B CN101580336 B CN 101580336B CN 2009100857447 A CN2009100857447 A CN 2009100857447A CN 200910085744 A CN200910085744 A CN 200910085744A CN 101580336 B CN101580336 B CN 101580336B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The invention relates to a processing method of sludge containing oil and methanol in natural gas conditioning plants, comprising concentration treatment, centrifugal dehydration and incineration treatment, in particular comprising the following steps: the sludge is collected a the sludge concentration tank, dehydrating agent is added into an agent-feeding device which is arranged on the upper part the sludge concentration tank, simultaneously, two mixing devices are arranged on the upper part of the sludge concentration tank, thus being convenient for stirring the sludge so that the medicine can come into full play; the sludge after dehydration is transported into a centrifugal dehydrator or a screw sludge extruding-desiccation machine through a screw sludge pump, and the sludge after centrifugal dehydration is transported to a rotary incinerator for incineration, and the residues after incineration are used for repairing roads or embedded into the appointed solid waste landfill sites. All the steps of the method are continuous and are interacted into a whole body; the method further has the advantages of simple processing flow, convenience and promptness, is applicable to processing the sludge containing oil and methanol in the natural gas conditioning plant and has great application value and good promotion prospect.
Description
Technical field
The present invention relates to the non-harmful processing method of mud, particularly a kind of processing method that the oil-containing that produces in the sewage disposal system is contained methyl alcohol mud.
Background technology
There is a large amount of mud to produce in the sewage disposal system production process.Mud mainly is divided into sewage containing methanol and reaches not sewage containing methanol (individual well comes water, maintenance, production and sanitary sewage).Contain pollutants such as a certain amount of oil content, methyl alcohol, dissolved state organic matter, inorganic salts and heavy metal ion in the mud,, can cause bigger pollution surrounding soil, water body and vegetation if directly enter in the natural environment.Also wasted simultaneously a large amount of resources.Therefore, no matter be to consider from environmental protection or from the angle that reclaims the energy, all must contain methyl alcohol mud and handle oil-containing.
At present, the method for sludge treatment that domestic most mud purification plant adopts is regular labor cleaning, mud in each sewage disposal system is collected in the open type sludge drying pond, and mummification is carried out in the filtration of filtrate at the bottom of the evaporation of dependence natural conditions such as wind, Exposure to Sunlight etc. and the pond; After moisture percentage in sewage sludge drops to a certain degree, utilize the opened type incinerating kiln that Sludge Surface is carried out simple burning disposal.But, burning will inevitably make pollutants such as a large amount of light oils and methyl alcohol be dispersed in the surrounding air in mud drying process, cause environmental pollution, and the cycle that arrives the processing method at present is long, moisture percentage in sewage sludge is high, thus cause fuel (natural gas) utilization rate in the burning disposal process low, burn many drawbacks such as weak effect, energy consumption are big.
Summary of the invention
The purpose of this invention is to provide a kind of processing method of sludge containing oil and methanol, mud is carried out nuisanceless processing, handle that pollutant load meets pollutant control criterion (GB4284-84) in the agricultural mud in the residue later, meeting with the natural gas is that the mud purification plant of fuel handles the requirement that oil-containing contains pure mud.
The technical solution used in the present invention is: processing method of sludge containing oil and methanol is characterized in that:
Mud concentration: mud compiled or collect the dewaterer dosing tank, the dosing pipeline that set up through sludge concentration tank top in the sludge concentration tank and add dehydrating agent.Two agitating devices are set up on the top of sludge concentration tank simultaneously, be convenient to the mud stirring medicament is played one's part to the full; By further deviating from part free water wherein after the gravitational settling processing, the sedimentation time is 2-60 hour to mud in sludge concentration tank, and the mud waste water after concentrating enters cesspool.
Having optimized described dehydrating agent by test evaluation is that 900～1,200 ten thousand cationic degree is that 25% PAMC and molecular weight are that 400～6,000,000 cationic degree is that a kind of among 15% the PAMC or any two kinds or any 3 kinds are formed by ferrous sulfate, frerrous chloride, ferric sulfate, ferric nitrate, bodied ferric sulfate, poly-ferric chloride, molecular weight.
The adding weight of ferrous sulfate, frerrous chloride, ferric sulfate, ferric nitrate, bodied ferric sulfate or poly-ferric chloride is respectively 100～450mg/L with mud cumulative volume ratio.
Molecular weight is that 900～1,200 ten thousand cationic degree is that 25% PAMC or molecular weight are that 400～6,000,000 cationic degree is that the adding weight of 15% PAMC is respectively 50mg/L with mud cumulative volume ratio.
Centrifugal dehydration treatment: the thickened sludge after concentration is transported in centrifugal dehydrator or the screw mud extruding-desiccation machine by slush pump and dewaters, and the waste water after the separation enters cesspool.The feed rate of centrifugal dehydrator is 2.4～3.05m
3/ h, centrifugal dehydrator rotating speed transfer to 2200～2400r/min, centrifugation time 2～5min for best.
Burning disposal: after mud mud cake after centrifugal dehydration treatment or body refuse are delivered to the feed hopper of rotary incinerator treatment system, carry out burning disposal in obturator, the residue after the burning disposal is used to repair the roads or imbeds the solid waste landfill site of appointment.The burning disposal temperature is 500～600 ℃.
Ferrous sulfate, frerrous chloride, ferric sulfate, ferric nitrate, bodied ferric sulfate, poly-ferric chloride play the chemical conditioning effect to mud on the one hand, on the other hand to mud particularly sulfur-bearing mud play deodorization functions.The dewatering of PAMC is not only relevant with its molecular weight, and relevant with its cationic degree.The PAMC neutralization that not only electrifies, and its bridging and curling effect are important too.
Chinese patent publication number CN1583607 discloses and dropped into poly-ferric chloride in waste water, carries out coagulating sedimentation; Publication number CN1789147 discloses that to prepare a kind of basicity be 8～16% poly-ferric chloride product.
Beneficial effect of the present invention: processing method of sludge containing oil and methanol of the present invention, the oil-containing that can satisfy the generation of gas field sewage treatment system contains the processing requirements of pure mud.Compared with prior art, have that treatment effect is good, non-secondary pollution, can effectively reclaim characteristics such as resource, energy consumption is low, operating cost is low.Pollutant (as cadmium, mercury, aluminium, chromium, arsenic, boron, copper, zinc, nickel, mineral wet goods) meets pollutant control criterion GB4284-84 in the agricultural mud in the residue after handling.Being a kind of economy, processing method of sludge containing oil and methanol effective, applied widely, is a kind of processing method that reduces public hazards.Oil-containing is contained methyl alcohol mud have positive effect and scalable, with respect to adopting the technical solution of burning, burying to have the effect that reduces public hazards in the prior art separately.
Description of drawings
Fig. 1 is a processing method of sludge containing oil and methanol schematic flow sheet of the present invention.
Wherein, 1. sludge concentration tank, 2. dewaterer dosing tank, 3. screw rod sludge pump, 4. centrifugal dehydrator, 5. cesspool, 6. rotary incinerator, 7. solid waste landfill site.
The specific embodiment
Embodiment 1: consult Fig. 1.
The present invention after proposing summary of the invention, and utilize the on-the-spot original centrifugal dehydrator of gas field second purification plant that pacifies the border region, the mud that newly cleans out carried out the The field operation, concrete condition is as follows:
Concentration: mud compiled or collect the dewaterer dosing tank 2 and the dosing pipeline that set up through sludge concentration tank 1 top in the sludge concentration tank 1 and add dehydrating agent; By further deviating from part free water wherein after the gravitational settling processing, the reaction time is 50 hours to mud in sludge concentration tank 1, and the mud waste water after concentrating enters cesspool 5.Through after the concentration, moisture percentage in sewage sludge can reduce to about 56%～60% by about 95%.
Processed: the thickened sludge after concentration is transported in the centrifugal dehydrator 4 (screw mud extruding-desiccation machine) by screw rod sludge pump 3, centrifugal dehydrator 4 rotating speeds are that 2200r/min, centrifugation time are 2min, and moisture content of the cake is smaller or equal to 60% after the centrifugal dehydration.Waste water after the separation enters cesspool.
Burning disposal: after mud mud cake after centrifugal dehydration treatment or body refuse are delivered to the feed hopper of rotary incinerator 6 treatment systems, carry out burning disposal in obturator, the residue after the burning disposal is used to repair the roads or imbeds the solid waste landfill site 7 of appointment.
Used dehydrating agent is a kind of ferrous sulfate, and ferrous sulfate adds weight and presses the calculating of mud cumulative volume, and adding weight is 350mg/L.
| Dehydrating agent | Addition mg/ | |
| Embodiment | ||
| 2 | Frerrous chloride | 150 |
| |
Ferric sulfate | 230 |
| |
Ferric nitrate | 430 |
| |
Bodied ferric sulfate (basicity 10%) | 180 |
| |
Poly-ferric chloride (basicity is 8～16%) | 330 |
| |
PAMC (molecular weight 1,120 ten thousand, cationic degree 22%) | 50 |
| Embodiment 8 | PAMC (molecular weight 5,500,000, cationic degree 13%) | 50 |
Embodiment 9～14: with embodiment 1 difference be: dehydrating agent is made up of two kinds of materials.It adds weight and presses the calculating of mud cumulative volume, is listed as follows:
Embodiment 15～19: consult Fig. 1.
The present invention after proposing summary of the invention, and utilize the on-the-spot original centrifugal dehydrator of gas field first purification plant that pacifies the border region, the mud that newly cleans out carried out the The field operation, concrete condition is as follows:
Concentration: mud is compiled or collect in the sludge concentration tank 1, dewaterer dosing tank 2 that sets up through sludge concentration tank 1 top and dosing pipeline add dehydrating agent.By further deviating from part free water wherein after the gravitational settling processing, the reaction time is 40 hours to mud in sludge concentration tank 1, and the mud waste water after concentrating enters cesspool 5.Through after the concentration, moisture percentage in sewage sludge can reduce to about 50% by about 98%.
Processed: the thickened sludge after concentration is transported in the centrifugal dehydrator 4 by the screw rod sludge pump, and centrifugal dehydrator 4 rotating speeds are that 2400r/min, centrifugation time are 5min, and moisture content of the cake is smaller or equal to 56% after the centrifugal dehydration.Waste water after the separation enters cesspool.
Burning disposal: after mud mud cake after centrifugal dehydration treatment or body refuse are delivered to the feed hopper of rotary incinerator 6 treatment systems, carry out burning disposal in obturator, the residue after the burning disposal is used to repair the roads or imbeds the solid waste landfill site 7 of appointment.
The selection of dehydrating agent mainly according to the mud aftertreatment technology to the requirement that adds the dehydrating agent afterreaction time and the requirement of moisture percentage in sewage sludge.According to the sludge components that present cleaning system produces, under the condition that guarantees the continuous even running of mud subsequent treatment process, moisture content should maintain between the 45-55%.The dehydrating agent of single mode can not meet the demands.
The dehydrating agent that embodiment 15～19 uses is made up of 3 kinds of materials.Add weight and press the calculating of mud cumulative volume, be listed as follows:
In embodiment of the present invention, each treatment step be made into continuously and mutually as a whole, be provided be mutually related turnover pipeline or charging and discharging mouth between each handling process and even each equipment, guarantee that oil-containing contains methyl alcohol mud and directly becomes Powdered solid-state by the liquid state of moisture content 95% after whole process is handled.Adopt the situation of a certain processing mode separately for the entire process flow process being isolated come, the combination of its effect is far away from the obtainable technique effect of overall flow.For example, adopt separately the combination that concentrates or adopt separately centrifugal or the effect that adopts burning disposal separately and obtained be can't reach the present invention's processing method of sludge containing oil and methanol required for protection obtainable above-mentioned technique effect.
Claims (7)
1. a processing method of sludge containing oil and methanol comprises concentration, centrifugal dehydration treatment and burning disposal step, it is characterized in that:
A, mud concentration: mud is pooled to the dewaterer dosing tank (2) that sets up through sludge concentration tank (1) top in the sludge concentration tank (1) adds dehydrating agent, simultaneously set up two agitating devices on the top of sludge concentration tank (1), stir mud dehydrating agent is fully mixed with mud, dehydrating agent plays one's part to the full; By deviating from part free water wherein after the gravitational settling processing, the sedimentation time is 2～60 hours to mud in sludge concentration tank (1), and the mud waste water after concentrating enters cesspool (5);
B, centrifugal dehydration treatment: the thickened sludge after concentration is transported in centrifugal dehydrator (4) or the screw mud extruding-desiccation machine by screw rod sludge pump (3) and dewaters, and the waste water after the separation enters cesspool (5); In the centrifugal dehydration treatment step, feed rate is 2.4～3.05m
3/ h, centrifugal dehydrator (4) rotating speed is 2200～2400r/min, centrifugation time 2～5min;
In C, the burning disposal: after mud mud cake after centrifugal dehydration treatment or body refuse are delivered to the feed hopper of rotary incinerator (6) treatment system, in obturator, carry out burning disposal, residue after the burning disposal is used to repair the roads or imbeds the solid waste landfill site (7) of appointment, and the temperature of burning in the burning disposal step is 500～600 ℃.
2. processing method of sludge containing oil and methanol according to claim 1 is characterized in that: described dehydrating agent is that ferrous sulfate, frerrous chloride, ferric sulfate, ferric nitrate, bodied ferric sulfate, poly-ferric chloride, molecular weight are that 900～1,200 ten thousand cationic degree is that 25% PAMC and molecular weight are that 400～6,000,000 cationic degree is a kind of among 15% the PAMC.
3. processing method of sludge containing oil and methanol according to claim 1 is characterized in that: described dehydrating agent is that 900～1,200 ten thousand cationic degree is that 25% PAMC and molecular weight are that 400～6,000,000 cationic degree is that among 15% the PAMC any two kinds are formed by ferrous sulfate, frerrous chloride, ferric sulfate, ferric nitrate, bodied ferric sulfate, poly-ferric chloride, molecular weight.
4. processing method of sludge containing oil and methanol according to claim 1 is characterized in that: described dehydrating agent is that 900～1,200 ten thousand cationic degree is that 25% PAMC and molecular weight are that 400～6,000,000 cationic degree is that among 15% the PAMC any 3 kinds are formed by ferrous sulfate, frerrous chloride, ferric sulfate, ferric nitrate, bodied ferric sulfate, poly-ferric chloride, molecular weight.
5. according to claim 2,3 or 4 described processing method of sludge containing oil and methanol, it is characterized in that: the adding weight of ferrous sulfate, frerrous chloride, ferric sulfate, ferric nitrate, bodied ferric sulfate or poly-ferric chloride is respectively 100～450mg/L with mud cumulative volume ratio.
6. according to claim 2,3 or 4 described processing method of sludge containing oil and methanol, it is characterized in that: molecular weight is that 900～1,200 ten thousand cationic degree is that 25% PAMC or molecular weight are that 400～6,000,000 cationic degree is that the adding weight of 15% PAMC is respectively 50mg/L with mud cumulative volume ratio.
7. according to claim 2,3 or 4 described processing method of sludge containing oil and methanol, it is characterized in that: the basicity of poly-ferric chloride is 8～16%.
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| CN2009100857447A CN101580336B (en) | 2009-05-27 | 2009-05-27 | Processing method of sludge containing oil and methanol |
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| CN101580336B true CN101580336B (en) | 2011-04-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515461A (en) * | 2011-12-30 | 2012-06-27 | 深圳市能源环保有限公司 | Sludge treatment system, sewage and sludge treatment system and treatment method |
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| CN101832566A (en) * | 2010-04-23 | 2010-09-15 | 浦华环保有限公司 | Anaerobic sludge digestion and dehydrated incineration method |
| CN102039301B (en) * | 2010-09-30 | 2013-04-10 | 昆明理工大学 | Oily sludge resource-innocent comprehensive treatment process |
| CN102690040B (en) * | 2011-03-25 | 2013-12-25 | 中国石油化工股份有限公司 | Method for treating municipal sludge |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515461A (en) * | 2011-12-30 | 2012-06-27 | 深圳市能源环保有限公司 | Sludge treatment system, sewage and sludge treatment system and treatment method |
| WO2013097461A1 (en) * | 2011-12-30 | 2013-07-04 | 深圳市能源环保有限公司 | Sewage and sludge treatment system and treatment method thereof |
| CN102515461B (en) * | 2011-12-30 | 2013-09-11 | 深圳市能源环保有限公司 | Sludge treatment system, sewage and sludge treatment system and treatment method |
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