CN105967496B - A kind of method for innocent treatment of sludge with high salt - Google Patents
A kind of method for innocent treatment of sludge with high salt Download PDFInfo
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- CN105967496B CN105967496B CN201610602645.1A CN201610602645A CN105967496B CN 105967496 B CN105967496 B CN 105967496B CN 201610602645 A CN201610602645 A CN 201610602645A CN 105967496 B CN105967496 B CN 105967496B
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- sludge
- washing step
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- oxidation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
Abstract
The invention discloses a kind of method for innocent treatment of sludge with high salt, it is related to field of environmental technology, including level-one filters pressing step, stirring and washing step, coagulant precipitation step and oxidation pressure filtration washing step, sewage sludge harmlessness is realized by the technique of " filters pressing+washing+oxidation+filters pressing ", pollutant in sludge is effectively removed, especially eliminate the wherein inorganic compositions such as chloride ion, medicament residue and organic pollutant, it is truly realized the innoxious of sludge, reduce the harm to environment, more serious pollution will not be generated using the method for washing, and the sewage after washing can also carry out harmless treatment together, it can also be recycled and not influence water washing effect, oxidation filters pressing effectively removes remaining harmful substance.
Description
Technical field
The present invention relates to field of environmental technology, relate in particular to a kind of method for innocent treatment of sludge with high salt.
Background technique
Oil gas field trade effluent mainly includes well-drilling waste water, acid fracturing waste water, workover treatment waste water, recover the oil (gas) waste water
Deng having the characteristics that high temperature, with high salt, high ammonia nitrogen, high COD, biodegradability is poor, is generally required to using flocculating setting and chemical oxygen
Change treatment process, a large amount of with high salt, high organic pollutant sludge can be generated in treatment process, is generally carried out according to hazardous waste
Management and disposition, there are mainly two types of approach for current each Sewage Disposal Treatment of Sludge, first is that filling out reason processing work according to hazardous waste
Skill carries out landfill stabilization, and site selection of landfill is difficult, builds and operational and administrative expenses is very high, and there are long-term hidden danger；Second is that with
Drilling well solid waste etc. carries out curing process together, but since sludge is complex in composition, contains the chemical agents residue such as oxidant, stone
The pollutant loads such as oils, chloride ion are also higher, after curing process, many percolate exudations still inevitably had, under peripherally
Water and soil cause larger hidden danger, and existing sludge disposal technology is difficult to remove or fixes the inorganic salts such as the chloride ion in sludge,
And chemical agent residue, it is be easy to cause underground water and soil pollution, such as Publication No. CN101172738, the time of disclosure is
On May 7th, 2008, the Chinese invention patent document of entitled " method of oily sludge harmless treatment " disclose a kind of dirt
The method of mud harmless treatment, the method comprising the steps of 1. by oily sludge centralized collection to together；2. by being collected into together
Liquid oily sludge, which carries out homogeneous, is sufficiently mixed various oily sludges by one section of mixing homogenizing process, forms physics and change
Learn liquid oily sludge of the property with respect to stable equilibrium；3. the liquid oily sludge after mixing homogeneous is transported to microorganism aerobic hair
Ferment processing unit carries out the aerobic microbiological oxidation first time fermentation process of oily sludge；4. oily sludge is converted into biological dirt
Mud carries out dehydration concentration；5. carrying out second of fermentation process；Change 6. converting organic fertilizer for the sludge after fermentation and being used for soil
Good, afforestation or Crops in Applying Fertilizer.Beneficial effect is the investment since method processing cost of the invention is cheap, easy to operate
Few, occupied area is small, and the cost of sludge dewatering is made to obtain very big reduction.Using this processing method, oily sludge can be made
It transforms into good organic fertilizer and protects the purpose of environment to realize clean manufacturing for agricultural production, have good
Promotion prospect, but this method carry out handling its effect using microbial process since content of chemical substances is higher in oily sludge
Fruit is more general, and higher cost, and treated, and sludge still contains many harmful substances.
For another example Publication No. CN102039301A, time of disclosure are on May 4th, 2011, a kind of entitled " oily sludge money
The Chinese invention patent document in source, Harmless and Comprehensive Disposal technique ", discloses a kind of processing method of oily sludge, mistake
Journey is divided into four steps: the pretreatment of first step oily sludge, oily sludge through plus water, heating and stirring after as liquefaction sewage sludge, and
It is sorted in stainless steel mesh；Quenched, the addition demulsification into the liquefaction sewage sludge by sorting of second step oily sludge
Agent and flocculant carry out oily sludge quenched；The three phase centrifugation of third step oily sludge separates, and the oil isolated enters grease
Separation system recycles crude oil, and the water isolated is delivered in oily sludge pre-treatment step and is recycled, and the residue isolated contains
The solid impurity and dross sub-elected in greasy dirt and greasy filth pretreatment enters Rotation error after drying；4th step is surplus
Remaining oily sludge and biomass multifuel combustion, remaining oily sludge and the solid impurity sub-elected and dross are returning after mixing with biomass
High temperature incineration processing is carried out in rotary kiln, eliminates the secondary pollution of oily sludge, and waste heat recycling, this side are carried out to high-temperature flue gas
In case, the water after three phase centrifugation separation directly reuses and separating effect can be made to weaken, and oily sludge, which is burned, can also generate
A large amount of dust and harmful vapors.
In conclusion problems of the prior art are as follows:
One, the prior art handles sludge, if filling out reason treatment process according to hazardous waste carries out landfill stabilization, landfill yard choosing
Location is difficult, builds and operational and administrative expenses is very high, and there are long-term hidden danger；If consolidated together with drilling well solid waste etc.
Change processing, but since sludge is complex in composition, contain the chemical agents residue such as oxidant, the pollutant loads such as petroleum-type, chloride ion
Also higher, after curing process, many percolate exudations are still inevitably had, larger hidden danger is caused to underground water around and soil, and
And the biodegradability of sludge with high salt is poor, Biochemical Treatment is bad, and burning then generates even more serious secondary pollution.
Two, the scheme of sludge with high salt is handled in the prior art, and step is complicated, and the processing time is long, and processing cost is high, and imitates
Rate is general.
Summary of the invention
The purpose of the present invention is to provide a kind of innoxious high-efficient, structures simply, will not generate secondary pollution, technique is wanted
Seek the method for innocent treatment of not high and lower-cost sludge with high salt.
The purpose of the present invention is achieved through the following technical solutions:
A kind of method for innocent treatment of sludge with high salt, which is characterized in that walked including level-one filters pressing step, stirring and washing
Suddenly, coagulant precipitation step and oxidation pressure filtration washing step:
The level-one filters pressing step is to carry out filters pressing processing to sludge, and sludge is pressed into mud cake and drains into stirring and washing step
Suddenly；
The stirring and washing step is that clear water and demulsifier are added to mud cake then to be cleaned and stirred, and lower layer is left
Body refuse drain into oxidation pressure filtration washing step, by upper liquid continue water-oil separating processing, the grease of liquid surface will be floated on
It is collected separately, coagulant precipitation step will be delivered to by the upper liquid of water-oil separating processing；
The coagulant precipitation step is directed to the mixed of the upper liquid by stirring and washing step and by water-oil separating processing
It closes and draining agent, coagulant, flocculant and pH adjusting agent is added in liquid, make the abundant coagulating of mixed liquor, suspended matter is heavy through flocculating
Thickened sludge is drained into oxygen by shallow lake processing, the thickened sludge then isolating supernatant by the mode of inclined plate sedimentation and being settled out
Change pressure filtration washing step；
The oxidation pressure filtration washing step be added into thickened sludge the detergent that is mixed by clear water and oxidant into
Row cleaning, then carries out filters pressing processing, and continues to be pumped into the cleaning solution continuation oxidation processes containing oxidant into plate and frame filter press,
Until the indexs such as COD and chloride are up to standard in discharge pressing filtering liquid, body refuse is pressed into mud cake, that is, completes the innoxious place of sludge
Reason；Pressing filtering liquid is collected into water tank, reuse or discharge after processing is up to standard.The discharge standard of the pollutants such as COD in pressing filtering liquid
According to " integrated wastewater discharge standard " (GB8978-1996), or the requirement according to each department；The discharge standard of chloride according to
The requirement of each department.
Filters pressing operation is carried out in the level-one filters pressing step and oxidation pressure filtration washing step to use with pre-washing function
Filter press.
Carrying out the filter press of filters pressing operation in the oxidation pressure filtration washing step is the plate and frame filter press with pre-washing function, oxygen
Change cleaning solution is pumped into filter press by the water pump being connected with filter press flushing water inlet and carries out oxidation rinsing.
Water-oil separating processing is carried out in the stirring and washing step uses oil separation tank, and the stirring and washing step
In water-oil separating processing at least carry out twice.
The coagulant precipitation step, it is that the pH value of the mixed liquor is adjusted to 9-10, the coagulation that pH adjusting agent, which is added,
Reaction is carried out in coagulation reaction tank or coagulating tank, and the mode of the inclined plate sedimentation is realized by inclined plate settler
's.
In the oxidation pressure filtration washing step, the pressing filtering liquid by filters pressing processing discharge is collected into water tank, through handling
Reuse or discharge after up to standard.Reuse or discharge standard are according to the requirements of each department.
In the stirring and washing step, demulsifier additional proportion is 5~500ppm in cleaning solution；According to petroleum content height
Low appropriate adjustment.
The ratio between coagulant, flocculant and upper liquid being added in the coagulant precipitation step, coagulant according to 1~
5ppm is added, and flocculant is added according to 20~500ppm；And it is adjusted according to upper liquid water quality situation.
In the oxidation pressure filtration washing step, the mixed proportion of clear water and oxidant is 0.5~5kg/m3；Dosage of scour
Ratio with sludge quantity is 1:2 to 1:5.
Beneficial effects of the present invention are as follows:
One, the method for innocent treatment of a kind of sludge with high salt provided by the invention mainly includes level-one filters pressing step, stirring
Cleaning step, coagulant precipitation step and oxidation pressure filtration washing step are realized dirty by the technique of " washing+filters pressing+oxidation+filters pressing "
Mud is innoxious, has effectively removed pollutant in sludge, especially eliminates the wherein inorganic compositions such as chloride ion, medicament residue and has
Machine pollutant is truly realized the innoxious of sludge, reduces the harm to environment, will not be generated using the method for washing tighter
The pollution of weight, and the sewage after washing also can one it is logical carry out harmless treatment, can also be recycled and not influence
Water washing effect, oxidation filters pressing removal effectively remove remaining harmful substance.
Two, the method for innocent treatment of a kind of sludge with high salt provided by the invention carries out filters pressing operation and band is used to rush
The filter press of function is washed, this method and technology is mature effectively, is widely used, cost is not high.
Three, the method for innocent treatment of a kind of sludge with high salt provided by the invention carries out water-oil separating processing and uses
Oil separation tank, and the oil strain processing in the stirring and washing step at least carries out twice, and oil separation tank technology maturation is widely used in
In the processing of oleaginous material, effect is fine, and carrying out water-oil separating at least twice also more can thoroughly remove oil in sludge
Rouge.
Four, the method for innocent treatment of a kind of sludge with high salt provided by the invention, the pH value of the mixed liquor is adjusted to
The weakly alkaline environment of 9-10 is more advantageous to the abundant progress of coagulant precipitation reaction, using the combination of coagulating tank and inclined plate sedimentation
Method is more advantageous to the sludge for effectively removing precipitating and sludge will not be stirred into supernatant again.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of preferred embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram of preferred embodiment of correspondence system of the present invention.
Specific embodiment
Below by way of several embodiment to further illustrate the technical scheme of the present inventions, it should be noted that realize this hair
The technical solution of improving eyesight includes but is not limited to following embodiment.
Embodiment 1
Such as Fig. 1, a kind of method for innocent treatment of sludge with high salt, which is characterized in that clear including level-one filters pressing step, stirring
Wash step, coagulant precipitation step and oxidation pressure filtration washing step:
The level-one filters pressing step is to carry out filters pressing processing to sludge, and sludge is pressed into mud cake and drains into stirring and washing step
Suddenly；
The stirring and washing step is that clear water and demulsifier are added to mud cake then to be cleaned and stirred, and lower layer is left
Body refuse drain into oxidation pressure filtration washing step, by upper liquid continue water-oil separating processing, the grease of liquid surface will be floated on
It is collected separately, coagulant precipitation step will be delivered to by the upper liquid of water-oil separating processing；
The coagulant precipitation step is directed to the mixed of the upper liquid by stirring and washing step and by water-oil separating processing
It closes and draining agent, coagulant, flocculant and pH adjusting agent is added in liquid, make the abundant coagulating of mixed liquor, suspended matter is heavy through flocculating
Thickened sludge is drained into oxygen by shallow lake processing, the thickened sludge then isolating supernatant by the mode of inclined plate sedimentation and being settled out
Change pressure filtration washing step；
The oxidation pressure filtration washing step be added into thickened sludge the detergent that is mixed by clear water and oxidant into
Row cleaning, then carries out filters pressing processing, and continues into plate and frame filter press to be pumped into the cleaning solution containing oxidant and continue at oxidation
Body refuse is pressed into mud cake, that is, completes the harmless of sludge by reason until the indexs such as COD and chloride are up to standard in discharge pressing filtering liquid
Change processing.
This is most basic embodiment of the invention.By the technique of " washing+filters pressing+oxidation+filters pressing " realize sludge without
Evilization, has effectively removed pollutant in sludge, especially eliminates the wherein inorganic compositions such as chloride ion, medicament residue and organic dirt
Object is contaminated, the innoxious of sludge is truly realized, reduces the harm to environment, will not be generated using the method for washing more serious
Pollution, and the sewage after washing also can one it is logical carry out harmless treatment, can also be recycled and not influence to wash
Effect, oxidation filters pressing removal effectively remove remaining harmful substance.
Embodiment 2
Such as Fig. 1, a kind of method for innocent treatment of sludge with high salt, which is characterized in that clear including level-one filters pressing step, stirring
Wash step, coagulant precipitation step and oxidation pressure filtration washing step:
The level-one filters pressing step is to carry out filters pressing processing to sludge, and sludge is pressed into mud cake and drains into stirring and washing step
Suddenly；
The stirring and washing step is that clear water and demulsifier are added to mud cake then to be cleaned and stirred, and lower layer is left
Body refuse drain into oxidation pressure filtration washing step, by upper liquid continue water-oil separating processing, the grease of liquid surface will be floated on
It is collected separately, coagulant precipitation step will be delivered to by the upper liquid of water-oil separating processing；
The coagulant precipitation step is directed to the mixed of the upper liquid by stirring and washing step and by water-oil separating processing
It closes and draining agent, coagulant, flocculant and pH adjusting agent is added in liquid, make the abundant coagulating of mixed liquor, suspended matter is heavy through flocculating
Thickened sludge is drained into oxygen by shallow lake processing, the thickened sludge then isolating supernatant by the mode of inclined plate sedimentation and being settled out
Change pressure filtration washing step；
The oxidation pressure filtration washing step be added into thickened sludge the detergent that is mixed by clear water and oxidant into
Row cleaning, then carries out filters pressing processing, and continues into plate and frame filter press to be pumped into the cleaning solution containing oxidant and continue at oxidation
Body refuse is pressed into mud cake, that is, completes the harmless of sludge by reason until the indexs such as COD and chloride are up to standard in discharge pressing filtering liquid
Change processing.
Filters pressing operation is carried out in the level-one filters pressing step and oxidation pressure filtration washing step to use with pre-washing function
Filter press.
This is a kind of preferred embodiment of the invention.It is realized by the technique of " washing+filters pressing+oxidation+filters pressing " dirty
Mud is innoxious, has effectively removed pollutant in sludge, especially eliminates the wherein inorganic compositions such as chloride ion, medicament residue and has
Machine pollutant is truly realized the innoxious of sludge, reduces the harm to environment, will not be generated using the method for washing tighter
The pollution of weight, and the sewage after washing also can one it is logical carry out harmless treatment, can also be recycled and not influence
Water washing effect, oxidation filters pressing removal effectively remove remaining harmful substance；It carries out filters pressing operation and uses filter press, this method
Technology maturation is effective, is widely used, and cost is not high.
Embodiment 3
Such as Fig. 1, a kind of method for innocent treatment of sludge with high salt, which is characterized in that clear including level-one filters pressing step, stirring
Wash step, coagulant precipitation step and oxidation pressure filtration washing step:
The level-one filters pressing step is to carry out filters pressing processing to sludge, and sludge is pressed into mud cake and drains into stirring and washing step
Suddenly；
The stirring and washing step is that clear water and demulsifier are added to mud cake then to be cleaned and stirred, and lower layer is left
Body refuse drain into oxidation pressure filtration washing step, by upper liquid continue water-oil separating processing, the grease of liquid surface will be floated on
It is collected separately, coagulant precipitation step will be delivered to by the upper liquid of water-oil separating processing；
The coagulant precipitation step is directed to the mixed of the upper liquid by stirring and washing step and by water-oil separating processing
It closes and draining agent, coagulant, flocculant and pH adjusting agent is added in liquid, make the abundant coagulating of mixed liquor, suspended matter is heavy through flocculating
Thickened sludge is drained into oxygen by shallow lake processing, the thickened sludge then isolating supernatant by the mode of inclined plate sedimentation and being settled out
Change pressure filtration washing step；
The oxidation pressure filtration washing step be added into thickened sludge the detergent that is mixed by clear water and oxidant into
Row cleaning, then carries out filters pressing processing, and continues into plate and frame filter press to be pumped into the cleaning solution containing oxidant and continue at oxidation
Body refuse is pressed into mud cake, that is, completes the harmless of sludge by reason until the indexs such as COD and chloride are up to standard in discharge pressing filtering liquid
Change processing.
Filters pressing operation is carried out in the level-one filters pressing step and oxidation pressure filtration washing step to use with pre-washing function
Filter press.
Carrying out the filter press of filters pressing operation in the oxidation pressure filtration washing step is the plate and frame filter press with pre-washing function, oxygen
Change cleaning solution is pumped into filter press by the water pump being connected with filter press flushing water inlet and carries out oxidation rinsing.
This is a kind of preferred embodiment of the invention.It is realized by the technique of " washing+filters pressing+oxidation+filters pressing " dirty
Mud is innoxious, has effectively removed pollutant in sludge, especially eliminates the wherein inorganic compositions such as chloride ion, medicament residue and has
Machine pollutant is truly realized the innoxious of sludge, reduces the harm to environment, will not be generated using the method for washing tighter
The pollution of weight, and the sewage after washing also can one it is logical carry out harmless treatment, can also be recycled and not influence
Water washing effect, oxidation filters pressing removal effectively remove remaining harmful substance；It carries out filters pressing operation and uses filter press, this method
Technology maturation is effective, is widely used, and cost is not high；It carries out oil strain processing and uses oil separation tank, and the stirring and washing walks
Oil strain processing in rapid at least carries out twice, and oil separation tank technology maturation is widely used in the processing of oleaginous material, and effect is very
Good, carrying out oil strain at least twice also more can thoroughly remove grease in sludge.
Embodiment 4
Such as Fig. 1, a kind of method for innocent treatment of sludge with high salt, which is characterized in that clear including level-one filters pressing step, stirring
Wash step, coagulant precipitation step and oxidation pressure filtration washing step:
The level-one filters pressing step is to carry out filters pressing processing to sludge, and sludge is pressed into mud cake and drains into stirring and washing step
Suddenly；
The stirring and washing step is that clear water and demulsifier are added to mud cake then to be cleaned and stirred, and lower layer is left
Body refuse drain into oxidation pressure filtration washing step, by upper liquid continue water-oil separating processing, the grease of liquid surface will be floated on
It is collected separately, coagulant precipitation step will be delivered to by the upper liquid of water-oil separating processing；
The coagulant precipitation step is directed to the mixed of the upper liquid by stirring and washing step and by water-oil separating processing
It closes and draining agent, coagulant, flocculant and pH adjusting agent is added in liquid, make the abundant coagulating of mixed liquor, suspended matter is heavy through flocculating
Thickened sludge is drained into oxygen by shallow lake processing, the thickened sludge then isolating supernatant by the mode of inclined plate sedimentation and being settled out
Change pressure filtration washing step；
The oxidation pressure filtration washing step be added into thickened sludge the detergent that is mixed by clear water and oxidant into
Row cleaning, then carries out filters pressing processing, and continues into plate and frame filter press to be pumped into the cleaning solution containing oxidant and continue at oxidation
Body refuse is pressed into mud cake, that is, completes the harmless of sludge by reason until the indexs such as COD and chloride are up to standard in discharge pressing filtering liquid
Change processing.
Filters pressing operation is carried out in the level-one filters pressing step and oxidation pressure filtration washing step to use with pre-washing function
Filter press.
Carrying out the filter press of filters pressing operation in the oxidation pressure filtration washing step is the plate and frame filter press with pre-washing function, oxygen
Change cleaning solution is pumped into filter press by the water pump being connected with filter press flushing water inlet and carries out oxidation rinsing.
Water-oil separating processing is carried out in the stirring and washing step uses oil separation tank, and the stirring and washing step
In water-oil separating processing at least carry out twice.
The coagulant precipitation step, it is that the pH value of the mixed liquor is adjusted to 9-10, the coagulation that pH adjusting agent, which is added,
Reaction is carried out in coagulation reaction tank or coagulating tank, and the mode of the inclined plate sedimentation is realized by inclined plate settler
's.
This is a kind of preferred embodiment of the invention.It is realized by the technique of " washing+filters pressing+oxidation+filters pressing " dirty
Mud is innoxious, has effectively removed pollutant in sludge, especially eliminates the wherein inorganic compositions such as chloride ion, medicament residue and has
Machine pollutant is truly realized the innoxious of sludge, reduces the harm to environment, will not be generated using the method for washing tighter
The pollution of weight, and the sewage after washing also can one it is logical carry out harmless treatment, can also be recycled and not influence
Water washing effect, oxidation filters pressing removal effectively remove remaining harmful substance；It carries out filters pressing operation and uses filter press, this method
Technology maturation is effective, is widely used, and cost is not high；It carries out oil strain processing and uses oil separation tank, and the stirring and washing walks
Oil strain processing in rapid at least carries out twice, and oil separation tank technology maturation is widely used in the processing of oleaginous material, and effect is very
Good, carrying out oil strain at least twice also more can thoroughly remove grease in sludge；The pH value of the mixed liquor is adjusted to
The weakly alkaline environment of 9-10 is more advantageous to the abundant progress of coagulant precipitation reaction, using the combination of coagulating tank and inclined plate sedimentation
Method is more advantageous to the sludge for effectively removing precipitating and sludge will not be stirred into supernatant again.
Embodiment 5
Such as Fig. 1, a kind of method for innocent treatment of sludge with high salt, which is characterized in that clear including level-one filters pressing step, stirring
Wash step, coagulant precipitation step and oxidation pressure filtration washing step:
The level-one filters pressing step is to carry out filters pressing processing to sludge, and sludge is pressed into mud cake and drains into stirring and washing step
Suddenly；
The stirring and washing step is that clear water and demulsifier are added to mud cake then to be cleaned and stirred, and lower layer is left
Body refuse drain into oxidation pressure filtration washing step, by upper liquid continue water-oil separating processing, the grease of liquid surface will be floated on
It is collected separately, coagulant precipitation step will be delivered to by the upper liquid of water-oil separating processing；
The coagulant precipitation step is directed to the mixed of the upper liquid by stirring and washing step and by water-oil separating processing
It closes and draining agent, coagulant, flocculant and pH adjusting agent is added in liquid, make the abundant coagulating of mixed liquor, suspended matter is heavy through flocculating
Thickened sludge is drained into oxygen by shallow lake processing, the thickened sludge then isolating supernatant by the mode of inclined plate sedimentation and being settled out
Change pressure filtration washing step；
The oxidation pressure filtration washing step be added into thickened sludge the detergent that is mixed by clear water and oxidant into
Row cleaning, then carries out filters pressing processing, and continues into plate and frame filter press to be pumped into the cleaning solution containing oxidant and continue at oxidation
Body refuse is pressed into mud cake, that is, completes the harmless of sludge by reason until the indexs such as COD and chloride are up to standard in discharge pressing filtering liquid
Change processing.
Filters pressing operation is carried out in the level-one filters pressing step and oxidation pressure filtration washing step to use with pre-washing function
Filter press.
Carrying out the filter press of filters pressing operation in the oxidation pressure filtration washing step is the plate and frame filter press with pre-washing function, oxygen
Change cleaning solution is pumped into filter press by the water pump being connected with filter press flushing water inlet and carries out oxidation rinsing.
Water-oil separating processing is carried out in the stirring and washing step uses oil separation tank, and the stirring and washing step
In water-oil separating processing at least carry out twice.
The coagulant precipitation step, it is that the pH value of the mixed liquor is adjusted to 9-10, the coagulation that pH adjusting agent, which is added,
Reaction is carried out in coagulation reaction tank or coagulating tank, and the mode of the inclined plate sedimentation is realized by inclined plate settler
's.
In the stirring and washing step, demulsifier additional proportion is 5~500ppm in cleaning solution；According to petroleum content height
Low appropriate adjustment.
The ratio between coagulant, flocculant and upper liquid being added in the coagulant precipitation step, coagulant according to 1~
5ppm is added, and flocculant is added according to 20~500ppm；And it is adjusted according to upper liquid water quality situation.
In the oxidation pressure filtration washing step, the mixed proportion of clear water and oxidant is 0.5~5kg/m3；Dosage of scour
Ratio with sludge quantity is 1:2 to 1:5.
The testing result for carrying out Treatment of Sludge using this method is as follows:
Embodiment 6
Such as Fig. 1, a kind of method for innocent treatment of sludge with high salt, which is characterized in that clear including level-one filters pressing step, stirring
Wash step, coagulant precipitation step and oxidation pressure filtration washing step:
The level-one filters pressing step is to carry out filters pressing processing to sludge, and sludge is pressed into mud cake and drains into stirring and washing step
Suddenly；
The stirring and washing step is that clear water and demulsifier are added to mud cake then to be cleaned and stirred, and lower layer is left
Body refuse drain into oxidation pressure filtration washing step, by upper liquid continue water-oil separating processing, the grease of liquid surface will be floated on
It is collected separately, coagulant precipitation step will be delivered to by the upper liquid of water-oil separating processing；
The coagulant precipitation step is directed to the mixed of the upper liquid by stirring and washing step and by water-oil separating processing
It closes and draining agent, coagulant, flocculant and pH adjusting agent is added in liquid, make the abundant coagulating of mixed liquor, suspended matter is heavy through flocculating
Thickened sludge is drained into oxygen by shallow lake processing, the thickened sludge then isolating supernatant by the mode of inclined plate sedimentation and being settled out
Change pressure filtration washing step；
The oxidation pressure filtration washing step be added into thickened sludge the detergent that is mixed by clear water and oxidant into
Row cleaning, then carries out filters pressing processing, and continues to be pumped into the cleaning solution continuation oxidation processes containing oxidant into plate and frame filter press,
Until the indexs such as COD and chloride are up to standard in discharge pressing filtering liquid, body refuse is pressed into mud cake, that is, completes the innoxious place of sludge
Reason.
Filters pressing operation is carried out in the level-one filters pressing step and oxidation pressure filtration washing step to use with pre-washing function
Filter press.
Carrying out the filter press of filters pressing operation in the oxidation pressure filtration washing step is the plate and frame filter press with pre-washing function, oxygen
Change cleaning solution is pumped into filter press by the water pump being connected with filter press flushing water inlet and carries out oxidation rinsing.
Water-oil separating processing is carried out in the stirring and washing step uses oil separation tank, and the stirring and washing step
In water-oil separating processing at least carry out twice.
The coagulant precipitation step, it is that the pH value of the mixed liquor is adjusted to 9-10, the coagulation that pH adjusting agent, which is added,
Reaction is carried out in coagulation reaction tank or coagulating tank, and the mode of the inclined plate sedimentation is realized by inclined plate settler
's.
In the stirring and washing step, demulsifier additional proportion is 5~500ppm in cleaning solution；According to petroleum content height
Low appropriate adjustment.
The ratio between coagulant, flocculant and upper liquid being added in the coagulant precipitation step, coagulant according to 1~
5ppm is added, and flocculant is added according to 20~500ppm；And it is adjusted according to upper liquid water quality situation.
In the oxidation pressure filtration washing step, the mixed proportion of clear water and oxidant is 0.5~5kg/m3；Dosage of scour
Ratio with sludge quantity is 1:2 to 1:5.
The testing result for carrying out Treatment of Sludge using this method is as follows:
Embodiment 7
Such as Fig. 1, a kind of method for innocent treatment of sludge with high salt, which is characterized in that clear including level-one filters pressing step, stirring
Wash step, coagulant precipitation step and oxidation pressure filtration washing step:
The level-one filters pressing step is to carry out filters pressing processing to sludge, and sludge is pressed into mud cake and drains into stirring and washing step
Suddenly；
The stirring and washing step is that clear water and demulsifier are added to mud cake then to be cleaned and stirred, clear water and demulsification
The ratio of agent is 5ppm, and the body refuse that lower layer is left drains into oxidation pressure filtration washing step, upper liquid is continued water-oil separating
Processing, the grease for floating on liquid surface is collected separately, and will be delivered to coagulant precipitation step by the upper liquid of water-oil separating processing
Suddenly；
The coagulant precipitation step is directed to the mixed of the upper liquid by stirring and washing step and by water-oil separating processing
It closes addition draining agent, coagulant, flocculant and pH adjusting agent, coagulant in liquid to be added according to 1ppm, flocculant adds according to 20ppm
Enter；Make the abundant coagulating of mixed liquor, suspended matter is handled through flocculation sedimentation, then isolates supernatant by the mode of inclined plate sedimentation
Thickened sludge is drained into oxidation pressure filtration washing step by liquid and the thickened sludge being settled out；
The oxidation pressure filtration washing step be added into thickened sludge the detergent that is mixed by clear water and oxidant into
The mixed proportion of row cleaning, clear water and oxidant is 0.5kg/m3, the ratio of dosage of scour and sludge quantity is 1:2；Then into
Row filters pressing processing, and continue to be pumped into the cleaning solution continuation oxidation processes containing oxidant into plate and frame filter press, until discharge filters pressing
The indexs such as COD and chloride are up to standard in liquid, and body refuse is pressed into mud cake, that is, completes the harmless treatment of sludge.
Filters pressing operation is carried out in the level-one filters pressing step and oxidation pressure filtration washing step to use with pre-washing function
Filter press.
Carrying out the filter press of filters pressing operation in the oxidation pressure filtration washing step is the plate and frame filter press with pre-washing function, oxygen
Change cleaning solution is pumped into filter press by the water pump being connected with filter press flushing water inlet and carries out oxidation rinsing.
Water-oil separating processing is carried out in the stirring and washing step uses oil separation tank, and the stirring and washing step
In water-oil separating processing at least carry out twice.
The coagulant precipitation step, it is that the pH value of the mixed liquor is adjusted to 9-10, the coagulation that pH adjusting agent, which is added,
Reaction is carried out in coagulation reaction tank or coagulating tank, and the mode of the inclined plate sedimentation is realized by inclined plate settler
's.
The testing result for carrying out Treatment of Sludge using this method is as follows:
Embodiment 8
Such as Fig. 1, a kind of method for innocent treatment of sludge with high salt, which is characterized in that clear including level-one filters pressing step, stirring
Wash step, coagulant precipitation step and oxidation pressure filtration washing step:
The level-one filters pressing step is to carry out filters pressing processing to sludge, and sludge is pressed into mud cake and drains into stirring and washing step
Suddenly；
The stirring and washing step is that clear water and demulsifier are added to mud cake then to be cleaned and stirred, clear water and demulsification
The ratio of agent is 250ppm, and the body refuse that lower layer is left drains into oxidation pressure filtration washing step, and upper liquid is continued grease point
From processing, the grease for floating on liquid surface is collected separately, coagulant precipitation will be delivered to by the upper liquid of water-oil separating processing
Step；
The coagulant precipitation step is directed to the mixed of the upper liquid by stirring and washing step and by water-oil separating processing
It closes addition draining agent, coagulant, flocculant and pH adjusting agent, coagulant in liquid to be added according to 3ppm, flocculant is according to 300ppm
It is added；Make the abundant coagulating of mixed liquor, suspended matter is handled through flocculation sedimentation, is then isolated by the mode of inclined plate sedimentation
Thickened sludge is drained into oxidation pressure filtration washing step by clear liquid and the thickened sludge being settled out；
The oxidation pressure filtration washing step be added into thickened sludge the detergent that is mixed by clear water and oxidant into
The mixed proportion of row cleaning, clear water and oxidant is 2.5kg/m3, the ratio of dosage of scour and sludge quantity is 1:3；Then into
Row filters pressing processing, and continue to be pumped into the cleaning solution continuation oxidation processes containing oxidant into plate and frame filter press, until discharge filters pressing
The indexs such as COD and chloride are up to standard in liquid, and body refuse is pressed into mud cake, that is, completes the harmless treatment of sludge.
Filters pressing operation is carried out in the level-one filters pressing step and oxidation pressure filtration washing step to use with pre-washing function
Filter press.
Carrying out the filter press of filters pressing operation in the oxidation pressure filtration washing step is the plate and frame filter press with pre-washing function, oxygen
Change cleaning solution is pumped into filter press by the water pump being connected with filter press flushing water inlet and carries out oxidation rinsing.
Water-oil separating processing is carried out in the stirring and washing step uses oil separation tank, and the stirring and washing step
In water-oil separating processing at least carry out twice.
The coagulant precipitation step, it is that the pH value of the mixed liquor is adjusted to 9-10, the coagulation that pH adjusting agent, which is added,
Reaction is carried out in coagulation reaction tank or coagulating tank, and the mode of the inclined plate sedimentation is realized by inclined plate settler
's.
The testing result for carrying out Treatment of Sludge using this method is as follows:
Embodiment 9
Such as Fig. 1, a kind of method for innocent treatment of sludge with high salt, which is characterized in that clear including level-one filters pressing step, stirring
Wash step, coagulant precipitation step and oxidation pressure filtration washing step:
The level-one filters pressing step is to carry out filters pressing processing to sludge, and sludge is pressed into mud cake and drains into stirring and washing step
Suddenly；
The stirring and washing step is that clear water and demulsifier are added to mud cake then to be cleaned and stirred, clear water and demulsification
The ratio of agent is 500ppm, and the body refuse that lower layer is left drains into oxidation pressure filtration washing step, and upper liquid is continued grease point
From processing, the grease for floating on liquid surface is collected separately, coagulant precipitation will be delivered to by the upper liquid of water-oil separating processing
Step；
The coagulant precipitation step is directed to the mixed of the upper liquid by stirring and washing step and by water-oil separating processing
It closes addition draining agent, coagulant, flocculant and pH adjusting agent, coagulant in liquid to be added according to 5ppm, flocculant is according to 500ppm
It is added；Make the abundant coagulating of mixed liquor, suspended matter is handled through flocculation sedimentation, is then isolated by the mode of inclined plate sedimentation
Thickened sludge is drained into oxidation pressure filtration washing step by clear liquid and the thickened sludge being settled out；
The oxidation pressure filtration washing step be added into thickened sludge the detergent that is mixed by clear water and oxidant into
The mixed proportion of row cleaning, clear water and oxidant is 5kg/m3, the ratio of dosage of scour and sludge quantity is 1:5；Then it carries out
Filters pressing processing, and continue to be pumped into the cleaning solution continuation oxidation processes containing oxidant into plate and frame filter press, until discharge pressing filtering liquid
The indexs such as middle COD and chloride are up to standard, and body refuse is pressed into mud cake, that is, completes the harmless treatment of sludge.
Filters pressing operation is carried out in the level-one filters pressing step and oxidation pressure filtration washing step to use with pre-washing function
Filter press.
Carrying out the filter press of filters pressing operation in the oxidation pressure filtration washing step is the plate and frame filter press with pre-washing function, oxygen
Change cleaning solution is pumped into filter press by the water pump being connected with filter press flushing water inlet and carries out oxidation rinsing.
Water-oil separating processing is carried out in the stirring and washing step uses oil separation tank, and the stirring and washing step
In water-oil separating processing at least carry out twice.
The coagulant precipitation step, it is that the pH value of the mixed liquor is adjusted to 9-10, the coagulation that pH adjusting agent, which is added,
Reaction is carried out in coagulation reaction tank or coagulating tank, and the mode of the inclined plate sedimentation is realized by inclined plate settler
's.
The testing result for carrying out Treatment of Sludge using this method is as follows:
Embodiment 10
Such as Fig. 2, a kind of innocuity disposal system of sludge with high salt, it is characterised in that: including the level-one filters pressing set gradually
Mechanism, stirring and washing mechanism, coagulant precipitation mechanism and oxidation filters pressing wiper mechanism；Be additionally provided with to the stirring and washing mechanism,
The medicating mechanism of coagulant precipitation mechanism and oxidation filters pressing wiper mechanism dosing；The stirring and washing mechanism includes agitator tank, oil removal
Tank and receipts oil tank, the agitator tank and oil separation tank are set gradually, and the receipts oil tank is connected with the oil separation tank.
The stirring and washing mechanism includes at least level-one oil separation tank and second level oil separation tank the two oil separation tanks, the level-one every
Oil tank and second level oil separation tank set gradually and are connected with receipts oil tank.The oil separation tank is known in those skilled in the art one
Kind petroleum waste water processing equipment.
The medicating mechanism includes at least three dispensing mouths.
One dispensing mouth of the medicating mechanism is connected with the agitator tank of the stirring and washing mechanism.Medicating mechanism is to stirring
The medicament of wiper mechanism addition is incorporated into agitator tank.
The level-one pressure filtration mechanism includes an at least plate and frame filter press.Plate and frame filter press is that those skilled in the art institute is public
A kind of solid-liquid separating equipment known.
The coagulant precipitation mechanism includes at least one set of coagulating tank and inclined plate settler set gradually, the dosing
One dispensing mouth of mechanism is connected with the coagulating tank.The coagulating tank and inclined plate settler are those skilled in the art
Effective equipment of a kind of physical-chemical process processing sewage well known to member.
The oxidation filters pressing wiper mechanism includes oxidant pond and plate and frame filter press, and the oxidant pond is provided with clear water and enters
One dispensing mouth at the mouth of a river, the medicating mechanism is connected with the oxidant pond.
In the oxidation pressure filtration washing step, the pressing filtering liquid by filters pressing processing discharge is collected into water tank, through handling
Reuse or discharge after up to standard.
This is a kind of preferred embodiment of the invention.System includes the level-one pressure filtration mechanism set gradually, stirs clearly
Washing machine structure, coagulant precipitation mechanism and oxidation filters pressing wiper mechanism；It is additionally provided with to the stirring and washing mechanism, coagulant precipitation mechanism
With the medicating mechanism of oxidation filters pressing wiper mechanism dosing, pass through " washing+filters pressing+oxidation+filters pressing " in sludge handling process
Technique realizes sewage sludge harmlessness, has effectively removed pollutant in sludge, has especially eliminated the wherein inorganic compositions such as chloride ion, medicine
Agent residue and organic pollutant are truly realized the innoxious of sludge, reduce the harm to environment；Stirring and washing mechanism includes
Two oil separation tanks can more thoroughly remove lipid phase in sludge；Medicating mechanism includes three dispensing mouths, can be respectively to stirring
Wiper mechanism, coagulant precipitation mechanism and oxidation filters pressing wiper mechanism dosing, drug is mixed separately to store and control respectively, be conducive to reach
Optimization process effect；Coagulant precipitation mechanism includes the coagulating tank and inclined plate settler set gradually, is conducive to adequately mixed
Retrogradation drop, inclined plate sedimentation technique are then more advantageous to the sludge for effectively removing precipitating and sludge will not be stirred into supernatant again
In；Oxidant pond is provided with clear water water inlet, and dispensing mouth is connected with the oxidant pond, oxidant and clear water can be made to exist in this way
It is sufficiently mixed before into filter press as detergent, the effect that oxidation is cleaned maximizes.
Claims (8)
1. a kind of method for innocent treatment of sludge with high salt, which is characterized in that including level-one filters pressing step, stirring and washing step,
Coagulant precipitation step and oxidation pressure filtration washing step:
The level-one filters pressing step is to carry out filters pressing processing to sludge, and sludge is pressed into mud cake and drains into stirring and washing step；
The stirring and washing step is that clear water and demulsifier are added to mud cake then to be cleaned and stirred, the mud that lower layer is left
Slag drains into oxidation pressure filtration washing step, and upper liquid is continued water-oil separating processing, and the grease for floating on liquid surface is independent
It collects, coagulant precipitation step will be delivered to by the upper liquid of water-oil separating processing；
The coagulant precipitation step is directed to the mixed liquor of the upper liquid by stirring and washing step and by water-oil separating processing
Middle addition draining agent, coagulant, flocculant and pH adjusting agent, it is that the pH value of the mixed liquor is adjusted to 9- that pH adjusting agent, which is added,
10, make the abundant coagulating of mixed liquor, coagulating is carried out in coagulation reaction tank or coagulating tank, and suspended matter is through wadding a quilt with cotton
Solidifying precipitation process, the concentration then isolating supernatant in such a way that inclined plate settler is using inclined plate sedimentation and being settled out are dirty
Thickened sludge is drained into oxidation pressure filtration washing step by mud；
The oxidation pressure filtration washing step is to be added to be carried out clearly by the detergent that clear water and oxidant are mixed into thickened sludge
It washes, then carries out filters pressing processing, and continue to be pumped into the cleaning solution continuation oxidation processes containing oxidant into plate and frame filter press, until
COD and chloride index are up to standard in discharge pressing filtering liquid, and body refuse is pressed into mud cake, that is, completes the harmless treatment of sludge.
2. a kind of method for innocent treatment of sludge with high salt as described in claim 1, it is characterised in that: the level-one filters pressing step
Filters pressing operation, which is carried out, in rapid and oxidation pressure filtration washing step uses filter press.
3. a kind of method for innocent treatment of sludge with high salt as claimed in claim 1 or 2, it is characterised in that: the oxidation pressure
It is the plate and frame filter press with pre-washing function that the filter press of filters pressing operation is carried out in filter washing step, oxidation rinsing liquid by with filters pressing
The connected water pump of machine flushing water inlet, which is pumped into filter press, carries out oxidation rinsing.
4. a kind of method for innocent treatment of sludge with high salt as described in claim 1, it is characterised in that: the stirring and washing step
Carry out water-oil separating processing in rapid and use oil separation tank, and the water-oil separating processing in the stirring and washing step at least into
Row is twice.
5. a kind of method for innocent treatment of sludge with high salt as described in claim 1, it is characterised in that: the oxidation pressure filtering cleaning
It washs in step, the pressing filtering liquid by filters pressing processing discharge is collected into water tank, reuse or discharge after processing is up to standard.
6. a kind of method for innocent treatment of sludge with high salt as described in claim 1, it is characterised in that: the stirring and washing step
In rapid, demulsifier additional proportion is 5~500ppm in cleaning solution.
7. a kind of method for innocent treatment of sludge with high salt as described in claim 1, it is characterised in that: the coagulant precipitation step
The ratio between coagulant, flocculant and upper liquid being added in rapid, coagulant are added according to 1~5ppm, and flocculant is according to 20
~500ppm is added.
8. a kind of method for innocent treatment of sludge with high salt as described in claim 1, it is characterised in that: the oxidation pressure filtering cleaning
It washs in step, the mixed proportion of clear water and oxidant is 0.5~5kg/m3；The ratio of dosage of scour and sludge quantity arrives for 1:2
1:5。
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| CN108083588A (en) * | 2017-12-06 | 2018-05-29 | 北京联众华禹环保科技有限公司 | The cleaning treatment system and treatment process of a kind of waste water-base drilling mud |
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