CN101816917A - Filter aid containing organic matter sludge with high water and volume reducing ratio and use method thereof - Google Patents
Filter aid containing organic matter sludge with high water and volume reducing ratio and use method thereof Download PDFInfo
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- CN101816917A CN101816917A CN200910067959A CN200910067959A CN101816917A CN 101816917 A CN101816917 A CN 101816917A CN 200910067959 A CN200910067959 A CN 200910067959A CN 200910067959 A CN200910067959 A CN 200910067959A CN 101816917 A CN101816917 A CN 101816917A
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Abstract
The invention relates to a filter aid containing organic matter sludge with high water and volume reducing ratio, comprising slag micro-powder particles for steel-making, ferrous micro-powder particles and a pH value regulator. Core material component is replaced by squeezed sludge burn ash powder after casting filter aid and the ash powder are added to the filter aid of next group of sludge treatment. A large amount of metal compounds in the sludge containing the filter aid is reduced to core matters of the filter aid by using the process of sludge burn ash treatment skillfully and using the backmixing sludge burn ash which can replace about 10-18% of dosage in the filter aid to realize the conversion of solid waste resources and reduce the cost. In the embodiment, unit price of the filter aid in the sludge solid matters is low, the solid containing rate of the filter cake reaches 40% and the filter cake of the technology is reduced in weight by 39% compared with the filter cake with the solid containing rate of 20%. The total cost of transportation and landfill treatment is reduced by 26%, the moisture is reduced by 54% and total cost of filter cake burn treatment is reduced by 45% with the weight ratio of the water reducing amount of sludge and use level of 9.4 and the weight losing amount of filter cake and dosage of 8.4. Price of dehydrant agent for reducing a ton of water is 25 RMB and price of the dehydrant agent for reducing a ton of weight is 28 RMB.
Description
Technical field
The present invention relates to a kind of filter aid that contains organic matter sludge and using method thereof of high water and volume reducing ratio, be specially adapted to the filter aid of the Separation of Solid and Liquid of industries such as sanitary sewage disposal, livestock and poultry breeding industry pollutant processing disposal and organic Treatment of Sludge disposal.
Background technology
At present, annual sludge discharged amount (dry weight) about 1,400,000 tons of wastewater treatment in China factory, and with annual speed increment more than 10%.Mud is the very high cotton-shaped mud pellet of a kind of moisture content that produces in the sewage disposal process, it is actually by the suspension in the sewage, microorganism and adsorbed organic matter and the formed gathering veneer of microbial metabolism activity product, be defined as biosolids abroad, contain the organic matter about 50% in the dewatered sludge, wherein contain poisonous and harmful substances such as a large amount of heavy metal substances, pathogen, the mud that does not obtain safety, environmental protection treatment disposal is bigger to the harm of environment.Domestic mud more than 60% is to throw aside now, the 30%th, landfill, less than 10% be by being back to the soil after the technical finesses such as compost, finally be used for the soil and usually cause city and rural environment secondary severe contamination as resource, the continuous administration mud time limit did not generally allow above 25 years, from the soil utilization of the throwing aside of very long history mud, landfill even 25 years descendants's the value of environmental resource from generation to generation of all may having overdrawed, badly influence the sustainable development of city and rural economy, the offspring of let us compensates with very expensive cost in the future.According to the data investigation, the many abroad countries of the landfill of mud are limited gradually or have eliminated and used.The best practicable technology that " sludge of sewage treatment plant is handled and disposed best practicable technology guide rule (exposure draft) " clear and definite Treatment of Sludge of national environmental protection portion issue is recently disposed is followed the principle of " minimizing, stabilisation, innoxious "; embody the principle of energy-saving and emission-reduction and recycling economy, under the prerequisite of safety, environmental protection, realize the recycling sludge target.It is " diminishingization " that Treatment of Sludge is disposed one of core technology of best practicable technology, reaches reducing sludge volume by diminishingization, the task of finishing the Treatment of Sludge disposal that just can be most economical most effectively on the basis of reducing sludge volume.
Processing contains in the Separation of Solid and Liquid process of suspension of the organic solid phase of be difficult to separating, and people must carry out preliminary treatment to it, just can make to filter with squeezing to become easy.The dehydrating agent that usually uses for the Treatment of Sludge unit of sewage disposal carries out preliminary treatment, dehydrating agent comprises medicaments such as flocculant, filter aid, the slip in low concentration stage concentrates based on flocculant, the press dewatering of the slip on high concentration rank is based on medicaments such as filter aids, and the dehydrating agent of high water and volume reducing ratio is mainly studied filter aid.
Utilize the solid content of mud of flocculant output that existing dewatering machine uses prior art about 20%～25%, make follow-up disposal costs costlinesses such as transportation, landfill, composting, burning because of removing more moisture.The filter aid that contains organic matter sludge of selection high water and volume reducing ratio is based on existing ripe plant equipment and finishes one of effective, the most most economical approach of mud diminishingization, the data of the dehydrating agent of being made up of the specific filter aid of several interpolations at present according to data-searching is claimed and can be accomplished that the sludge filter cake solid content is more than 40%, but have some filter aids to have following shortcoming to lose use value: the one, the cost height, the bigger addition that unit sludge contains thing admittedly influences the volume reduction ratio that Treatment of Sludge is disposed; The 2nd, the higher price of filter aid, economy is relatively poor, and the 3rd, adopt the alkaline auxiliary filtering agent, cause difficulty for the resource of filter cake, for example adopt lime uncomfortable, and harden easily as fertilizer.
No matter adopt any method, the moisture content that reduces mud is the most basic approach that reduces the Treatment of Sludge disposal costs, seek efficient, cost is low, technology is simple, harmless, the filter aid that minimizing, stabilisation can recycle as far as possible has great application value to the Treatment of Sludge technology.
Summary of the invention
At above many disadvantages, the present invention proposes and solve in-problem technical scheme, provide a kind of and can significantly improve dewatering performance of sludge, efficiently, can obtain high mass dryness fraction filter cake, cost is low, and technology is simple, stabilisation, innoxious, the filter aid that can recycle as far as possible.This filter aid adds organic mud after concentrating with further water and volume reducing.
The filter aid of first kind of technical scheme of the present invention comprises following raw material components and percentage composition thereof: the slag micro powder particle 75%～100% of steel-making, iron content micro powder granule 0%～25%.The definition of keyword " slag " is: by converter that meets the standard code of YB/T002-2008 metallurgy industry or electric furnace slag (abbreviation slag), grinding reaches the product of certain fineness after the magnetic deironing.The main mineral facies of slag are the solid solution that the oxide of tricalcium silicate, dicalcium silicate, monticellite, calcium manganolite, iron calcium aluminate and silicon, magnesium, iron, manganese, phosphorus forms, and also contain small-amount free calcium oxide and metallic iron, fluor-apatite etc.Slag is a kind of industrial solid wastes that steel-making produces, and utilizes slag micro powder particle that slag can extract and iron content micro powder granule as the raw material of filter aid, realizes the steel-making conversion of useless resource admittedly.The filter aid significant feature has bridge formation, structure crack, absorption, flocculates and solidifies, and wherein topmost effect is the structure crack.The slag micro powder particle and the iron content micro powder granule of steel-making mix as solid phase with mud, this solid phase becomes the cake layer of adequate thickness and density by damming on filter medium in the unstable state filtration phase, this cake layer framework becomes another part of filter media systems; When filter aid reaches certain ratio in solid phase, the small rigid particles of some irregular contours in the filter aid overlaps in solid phase mutually, make up a series of penetrating passages, passage descends three one-tenth the filter cake resistivity of mud, especially when adopt filtering when vibration material shaking and squeezing half admittedly the backflow wriggling of formula cake layer of shape filter cake effect is doubled, the material effect that density is bigger in the filter aid is more obvious; On the other hand, will have time enough to dam to account for the tiny solid phase particles of enough ratios in total slip in the stable state phase of filtering on this medium system is to guarantee that solid content is up to standard desired in the filtrate, the cake layer of framework is thin excessively, less filtration resistance will make that tiny solid phase particles returns slip in a large number in the slip, can't be complete finish filtration duty.But the filter aid of excessive number, too much penetrating passage, not remarkable to dehydrating effect, and increase the cost that adds filter aid greatly, and cause the weight of filter cake to increase.
Second kind of technical scheme, described filter aid comprise with the ashes of the sludge incineration Ex-all organic matter that squeezes behind adding of the same weight filter aid of the present invention replace take out in the slag micro powder granule content of steel-making of such scheme 10%～90%, remaining slag micro powder particle and iron content micro powder granule percentage composition 0%～25%.The component and percentage composition (unit the is mg/kg) scope of the ashes of the mud that does not add filter aid by burning mineralising are AL
2O
38～14, SiO
217～30, CaO 2～30, P
2O
58～20, Fe
2O
38～20, MgO1.3～3.2, K
2O 0.6～1.8, NaO 0～0.5, to add in the proper ratio the sludge incineration ashes that squeezes behind the filter aid substitute the core material component add again next group Treatment of Sludge filter aid in still play the effect of the filter aid that contains organic matter sludge of high water and volume reducing ratio, because raw material is taken from gurry and has been reduced cost, and can obtain dehydrating effect preferably.If independent burning sludge, general sludge filter cake burns ash and contains filter aid weight ratio about 30%, contain the composition of metallic compounds such as alundum (Al, iron oxide and di-iron trioxide generally more than 10% owing to wherein be hidden in the filter aid of filter cake, utilize next step incineration disposal process of mud cleverly, be reduced into core substance with containing metallic compounds a large amount of in the mud of filter aid as filter aid, saved like this and added expensive iron content micro mist in addition, realize the conversion of useless resource admittedly, further reduced cost.
The third technical scheme, described filter aid are 10%～100% of the iron constituent content in above-mentioned first and second kinds of technical schemes to be mixed into the molysite mixture with the sulfuric acid of same weight throw to join and join in the thing, and all the other components and percentage composition are identical.Because the molysite mixture can utilize the smart powder of the iron in the magnetic separation slag micro powder particle to make, smart powder of iron and sulfuric acid solution add thermal response and can produce ferrous sulfate, ferrous sulfate is the water purification agent of using always, inorganic flocculating agent, this flocculant adds in the mud slip as the key component in the filter aid, iron containing compounds has destroyed the hydrophilic layer of particle surface, with inorganic particles nuclear is the center, by collision, condensing has promoted growing up of particle condensation group, because the difference of organic matter quality in iron content industrial chemicals and the mud has been broken the mud colloid stability of floc sedimentation greatly, form little and fine and close floc sedimentation, play suction-operated.The production of this raw material can utilize the gurry of steel-making to be formed with the material of usefulness, and this programme can be saved the mud slurry and concentrate polyacrylamide (PAM) flocculant that adds.
The 4th kind of technical scheme, described filter aid are to add aluminium polychloride on the basis with claim 1 or 2 or 3 raw material components and percentage composition thereof, and the addition of aluminium polychloride is for containing the weight ratio 2%～10% of thing admittedly.
The 5th kind of technical scheme, described filter aid are with additional sulfuric acid or hydrochloric acid on the basis of above-mentioned first to fourth kind of technical scheme raw material components and percentage composition thereof, the pH value scope of regulating the mud slip downwards: 6～9.5.
First kind of using method that filter aid of the present invention is applied to the use of sludge dewatering is: add weight ratio 10%～60% filter aid that contains thing admittedly in the mud slurry of the slurry vessel of solid-liquid separating equipment charging; Percentage composition in the filter aid: the slag micro powder particle 75%～100% of steel-making, iron content micro powder granule 0%～25%; Pump in the solid-liquid separating equipment after filter aid and mud slurry stir and dewater.
Second method is: the filter aid that adds the weight ratio 10%～60% that contains thing admittedly in the mud slurry of the slurry vessel of solid-liquid separating equipment charging; Filter aid comprises that taking out percentage composition 10%～90% from the slag micro powder grain fraction of the steel-making of first kind of using method replaces with the ashes of the sludge incineration Ex-all organic matter that squeezes behind the usefulness filter aid of the present invention of same weight, remaining slag micro powder particle and iron content micro powder granule percentage composition 0%～20%; Pump in the solid-liquid separating equipment after filter aid and mud slurry stir and dewater.
The third method is: the filter aid that adds the weight ratio 10%～60% that contains thing admittedly in the mud slurry of the slurry vessel of solid-liquid separating equipment charging; Filter aid is 10%～100% of the iron constituent content in above-mentioned first and second kinds of technical schemes to be mixed into the molysite mixture with the sulfuric acid of same weight join and join in the thing, and all the other components and content are identical.When adding molysite mixture and other component mixing back are added and stir in the mud slurry of the slurry vessel of solid-liquid separating equipment charging, pump in the solid-liquid separating equipment after filter aid and mud slurry stir and dewater.
The 4th kind of method is: the filter aid that adds the weight ratio 10%～60% that contains thing admittedly in the mud slurry of the slurry vessel of solid-liquid separating equipment charging; Filter aid is that the sulfuric acid with the iron constituent content percentage in above-mentioned first and second kinds of technical schemes 10%～100% and same weight is mixed into the molysite mixture and joins and join in the thing, and all the other components and content are identical.Add aluminium salt or molysite mixture when adding earlier, add all the other components and content thereof again, pump in the solid-liquid separating equipment after all filter aid components and mud slurry stir and dewater.
The 5th kind of method is: the pH value of test mud slip after finishing above-mentioned first to fourth kind of method respectively to add filter aid, regulate the pH value of mud slip downwards with adding sulfuric acid or hydrochloric acid, pump into the pH value scope of the mud slip in the solid-liquid separating equipment: 6～9.5.
Filter aid of the present invention is applied to high-pressure compressing solid-liquid separation device of flexible pipe and plate and frame filter press carries out sludge dewatering, and squeeze pressure is 0.5～2.5Mpa, and 20～180 minutes squeezing time, discharging is convenient in the stiff moulding of the outward appearance of filter cake.
Filter aid of the present invention is applied to belt filter press and carries out sludge dewatering, dehydration strainer speed 1～2m/min, and dehydration strainer tension force is 0.1～0.4Mpa.
Filter aid of the present invention beneficial effect compared with prior art is:
1, since in the filter aid component major part utilized the ash of sludge incineration of the slag of steel-making and back-mixing as raw material, the cost of raw material is very low, does not need long-distance transport, though the filter aid component requires average grain diameter less, but the particle diameter of raw material itself is just less, raw material conglomeration intensity is very low, and processing charges are cheap, and part material can be taken from the gurry burning again and remove organic matter, back-mixing is back to mud in filter aid again, move in circles, go round and begin again, the cost of cheap filter aid further reduces.
2, the filter cake solid content is higher, it is fast to have given full play to boosting of equipment for separating liquid from solid, pressure height, filter cake approach, peel off fast and the fast characteristics of discharging with filter medium, in the darker filter chamber of equipment for separating liquid from solid, the mud sedimentation downwards rapidly that density is big, for new suspension exposes new filter cloth area, thereby whole filter efficiency is increased.
3, the more content of neutral substance such as quartz sand, aluminium and iron compound are higher in Lian Gang the slag, so the alkalescence in this filter aid is lower than adding lime merely, provide future widely for the resource of sludge dewatering, for example, brickmaking can be gained in strength, and composting can increase fertilizer efficiency.
The specific embodiment
Below in conjunction with accompanying drawing filter aid of the present invention is further described.
Filter aid of the present invention is an inorganic compositions, can be according to " the slag part that is used for cement and concrete " GBT20491-2006 standard, adopt the conventional production process device fabrication, smart powder fineness 150～200 orders of the iron in the filter aid, all the other mineralizer specific areas are 350～500m
2/ kg.For the ease of comparing, throwing the preceding mud solid content that contains organic matter that concentrates of this filter aid in following examples is 5%, the concentrated polyacrylamide flocculant that adopts, and practical application can design according to technological requirement.Use the method for dehydrating agent and the characteristics of solid-liquid separating equipment to concern very big, pliable and tough pipe high-pressure compressing Separation of Solid and Liquid is a kind of novel solid-liquid separating equipment, boost squeezing and staged attenuate filter cake of the staged that pliable and tough pipe high-pressure compressing Separation of Solid and Liquid adopts squeezes and is particularly suitable for using this filter aid, the particulars of relevant devices to see that " fast squeezing solid-liquid separation device of flexible pipe " application number is 2008101539714.
Embodiment 1
Filter aid of the present invention is applied to the using method that plate and frame filter press carries out sludge dewatering: the filter aid that adds the weight ratio that contains thing admittedly and be 28% (14 kilograms) in the activated sludge slurry of post precipitation stirs, each constituent content percentage in the filter aid: the slag micro powder particle 93% of steel-making (13.02 kilograms), iron content micro powder granule 7% (0.98 kilogram), stirred 12 minutes, and pumped in the plate and frame filter press after stirring and dewater.The squeeze pressure of plate and frame filter press is 2Mpa, and 130 minutes squeezing time, the solid content of dehydration activity sludge filter cake reaches 35%, and discharging is convenient in the stiff moulding of the outward appearance of filter cake.
Embodiment 2
Filter aid of the present invention is applied to the using method that high-pressure compressing solid-liquid separation device of flexible pipe carries out sludge dewatering: the filter aid that adds the mass fraction ratio and be 30% (15 kilograms) in the activated sludge slurry of post precipitation stirs; Each constituent content percentage in the filter aid: be to replace 70% (9.765 kilograms) that take out in the slag micro powder grain fraction content of steel-making of such scheme with the ashes that the activated sludge that squeezes behind adding of the same weight filter aid of the present invention burns the Ex-all organic matter, the slag micro powder grain fraction (4.185 kilograms) of steel-making, iron content micro powder granule 7% (1.05 kilograms); Stirred 10 minutes, and pumped in the high-pressure compressing solid-liquid separation device of flexible pipe after stirring and dewater.The squeeze pressure of high-pressure compressing solid-liquid separation device of flexible pipe is 1.2Mpa, and 85 minutes squeezing time, the solid content of dehydration activity sludge filter cake reaches 36%, and discharging is convenient in the stiff moulding of the outward appearance of filter cake.
Embodiment 3
Filter aid of the present invention is applied to the using method that high-pressure compressing solid-liquid separation device of flexible pipe carries out sludge dewatering: the filter aid (15 kilograms) that adds the weight ratio 24% that contains thing admittedly in the mud slurry of the slurry vessel of solid-liquid separating equipment charging; Filter aid is that the sulfuric acid with 90% (0.945 kilogram) of iron content micro powder granule 7% (1.05 kilograms) content and same weight is mixed into the molysite mixture and joins and join in the thing, and the ratio of all the other constituent contents is identical with embodiment 2.When adding molysite mixture and other component mixing back are added and stir in the mud slurry of the slurry vessel of solid-liquid separating equipment charging, stirred 15 minutes, pump in the high-pressure compressing solid-liquid separation device of flexible pipe after filter aid and mud slurry stir and dewater.The squeeze pressure of high-pressure compressing solid-liquid separation device of flexible pipe is 1.5Mpa, and 75 minutes squeezing time, the solid content of dehydration activity sludge filter cake reaches 40%, and discharging is convenient in the stiff moulding of the outward appearance of filter cake.
Embodiment 4
Filter aid of the present invention is applied to the using method that belt filter press carries out sludge dewatering: the filter aid that adds the weight ratio 50% (25 kilograms) that contains thing admittedly in the mud slurry of the slurry vessel of solid-liquid separating equipment charging; Filter aid is that the sulfuric acid with 100% (1.75 kilograms) of iron content micro powder granule 7% content and same weight is mixed into the molysite mixture and joins and join in the thing, and the ratio of all the other constituent contents is identical with embodiment 1.Add aluminium polychloride and molysite mixture in the filter aid when adding earlier, aluminium polychloride adds the weight ratio 2% (1 kilogram) that mud contains thing admittedly; Stirred 4 minutes, and added all the other components in the filter aid again, stirred 15 minutes, pump in the belt filter press after stirring and dewater.Dehydration strainer speed 1.5m/min, dehydration strainer tension force is 0.35Mpa, the solid content of dehydration activity sludge filter cake reaches 36%.
Embodiment 5
Filter aid of the present invention is applied to the using method that high-pressure compressing solid-liquid separation device of flexible pipe carries out sludge dewatering: to add the stir pH value of back test mud slip of filter aid be 10.5 finishing the foregoing description 3 respectively, with adding the pH value to 8.1 that sulfuric acid is regulated the mud slip downwards.Pug stock pump after the dosing goes in the high-pressure compressing solid-liquid separation device of flexible pipe to dewater.The squeeze pressure of high-pressure compressing solid-liquid separation device of flexible pipe is 1.2Mpa, 65 minutes squeezing time, the solid content of dehydration activity sludge filter cake reaches 40%, and discharging is convenient in the stiff moulding of the outward appearance of filter cake, and the sludge incineration ash content of dispersion ratio that is used for the back-mixing filter aid is 30%.
Technology and economic indicator: 160 yuan per ton of the filter aid of present embodiment, mud contain thing admittedly and throw 36.3 yuan/ton of this filter aid unit prices, and the expense of the PAM flocculant that mud simmer down to 5% is thrown is that 25 yuan/mud contains the thing ton admittedly; Transportation is calculated 35 yuan of freight charges by 20 kilometers, and landfill takes 15 yuan.Because the sludge filter cake solid content has reached 40%, this sludge filter cake is the filter cake loss of weight 40% of this process program of filter cake of solid content 20% relatively, and relatively solid content 20% this process program of filter cake filter cake transportation landfill cost of disposal total cost reduces 26%; Because relatively this technology of filter cake filter cake moisture of solid content 20% reduces 54%, for follow-up mummification or the incineration disposal wanted, the generating of sludge filter cake and coal multifuel combustion is per ton presses 120 yuan of calculating, because it is energy-saving and cost-reducing, compare solid content 20% water filter cake, this process program filter cake cost of disposal total cost reduces by 45.4%.Mud diminishing amount is 9.4 with the weight ratio that adds dose, sludge filter cake loss of weight amount and the weight ratio 8.4 that adds dose, and per 1 to subtract a ton water dispensing valency be 25.2 yuan, whenever subtracts 28.2 yuan of ton weight dispensing valencys, sludge filter cake burns grey content of dispersion than about 30%.Time of filter pressing shortens 10 minutes than embodiment 3, and production capacity improves 15%.Because labour cost, price such as chemicals and enterprise operation profit are according to the fluctuation of factors such as the time and the market demand, and the data of this index are only for reference.
Obviously, the relevant technologies feature among the various embodiment can reasonably exchange and omit in the rights protection scope.
Claims (10)
1. the filter aid that contains organic matter sludge of a high water and volume reducing ratio, this filter aid adds and contain organic mud with further water and volume reducing after concentrating, it is characterized in that, this filter aid comprises following raw material components and percentage composition thereof: the waste micro powder granule 75%～100% of steel-making, iron content micro powder granule 0%～25%.
2. the filter aid that contains organic matter sludge of high water and volume reducing ratio according to claim 1, it is characterized in that, described filter aid be take out in the slag micro powder grain fraction content of the ashes of the sludge incineration Ex-all organic matter that squeezes behind this filter aid with adding of the same weight steel-making of replacing such scheme 10%～90%, remaining slag micro powder particle and iron content micro powder granule percentage composition 0%～25%.
3. the filter aid that contains organic matter sludge of high water and volume reducing ratio according to claim 1 and 2, it is characterized in that, described filter aid is 10%～100% of iron constituent content to be mixed into the molysite mixture with the sulfuric acid of same weight throw to join and join in the thing, and all the other components and percentage composition are identical.
4. according to the filter aid that contains organic matter sludge of claim 1 or 2 or 3 described high water and volume reducing ratios, it is characterized in that, described filter aid is to add aluminium polychloride on the basis with claim 1 or 2 or 3 raw material components and percentage composition thereof, and the addition of aluminium polychloride is the weight ratio 2%～10% that mud contains thing admittedly.
5. according to the filter aid that contains organic matter sludge of claim 1 or 2 or 3 or 4 described high water and volume reducing ratios, it is characterized in that, described filter aid is with additional sulfuric acid or hydrochloric acid on the basis of claim 1 or 2 or 3 raw material components and percentage composition thereof, the pH value scope of regulating the mud slip downwards: 6～9.5.
6. according to the using method of the filter aid that contains organic matter sludge of claim 1 or 4 described high water and volume reducing ratios, it is characterized in that, in the mud slurry of the slurry vessel of solid-liquid separating equipment charging, add the filter aid of the weight ratio 10%～60% that contains thing admittedly; Filter aid constituent content percentage: the slag micro powder particle 80%～97% of steel-making, iron content micro powder granule 0%～25%; Pump in the solid-liquid separating equipment after filter aid and mud slurry stir and dewater.
7. according to the using method of the filter aid that contains organic matter sludge of claim 2 or 4 described high water and volume reducing ratios, it is characterized in that, in the mud slurry of the slurry vessel of solid-liquid separating equipment charging, add the filter aid of the weight ratio 10%～60% that contains thing admittedly; Filter aid comprises that taking out 10%～90% of content from the slag micro powder grain fraction of the steel-making of first kind of using method replaces with the ashes of the sludge incineration Ex-all organic matter that squeezes behind the usefulness filter aid of the present invention of same weight, remaining slag micro powder particle and iron content micro powder granule percentage composition 0%～25%; Pump in the solid-liquid separating equipment after filter aid and mud slurry stir and dewater.
8. according to the using method of the filter aid that contains organic matter sludge of claim 3 or 4 or 5 described high water and volume reducing ratios, it is characterized in that, in the mud slurry of the slurry vessel of solid-liquid separating equipment charging, add the filter aid of the weight ratio 10%～60% that contains thing admittedly; Filter aid is 10%～100% of the iron constituent content in above-mentioned first and second kinds of technical schemes to be mixed into the molysite mixture with the sulfuric acid of same weight join and join in the thing, and all the other components and percentage composition are identical.When adding molysite mixture and other component mixing back are added and stir in the mud slurry of the slurry vessel of solid-liquid separating equipment charging, pump in the solid-liquid separating equipment after filter aid and mud slurry stir and dewater.
9. according to the using method of the filter aid that contains organic matter sludge of claim 4 or 5 or 6 or 7 or 8 described high water and volume reducing ratios, it is characterized in that, in the mud slurry of the slurry vessel of solid-liquid separating equipment charging, add the filter aid of the weight ratio 10%～60% that contains thing admittedly; Filter aid is 10%～100% of the iron constituent content in above-mentioned first and second kinds of technical schemes to be mixed into the molysite mixture with the sulfuric acid of same weight join and join in the thing, and all the other components and content are identical.Add aluminium polychloride or molysite mixture when adding earlier, add all the other components and content thereof again, pump in the solid-liquid separating equipment after all filter aid components and mud slurry stir and dewater.
10. according to the using method of the filter aid that contains organic matter sludge of claim 4 or 5 or 6 or 7 or 8 or 9 described high water and volume reducing ratios, it is characterized in that, the pH value of test mud slip after four kinds of methods finishing claim 6 or 7 or 8 or 9 respectively add filter aid, regulate the pH value of mud slip downwards with adding sulfuric acid or hydrochloric acid, pump into the pH value scope of the mud slip in the solid-liquid separating equipment: 6～9.5.
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| CN200910067959A CN101816917A (en) | 2009-02-26 | 2009-02-26 | Filter aid containing organic matter sludge with high water and volume reducing ratio and use method thereof |
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|---|---|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110092562A (en) * | 2019-04-10 | 2019-08-06 | 广州市新之地环保产业股份有限公司 | A kind of sludge dewatering by plate-frame method and conditioner used |
| CN112113823A (en) * | 2019-06-19 | 2020-12-22 | 山东蓬勃生物科技有限公司 | Application of enzyme-linked immunosorbent assay to detection of trace synergist content in solid synergistic fertilizer |
-
2009
- 2009-02-26 CN CN200910067959A patent/CN101816917A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110092562A (en) * | 2019-04-10 | 2019-08-06 | 广州市新之地环保产业股份有限公司 | A kind of sludge dewatering by plate-frame method and conditioner used |
| CN112113823A (en) * | 2019-06-19 | 2020-12-22 | 山东蓬勃生物科技有限公司 | Application of enzyme-linked immunosorbent assay to detection of trace synergist content in solid synergistic fertilizer |
| CN112113823B (en) * | 2019-06-19 | 2024-01-16 | 山东蓬勃生物科技有限公司 | Application of enzyme linked immunosorbent assay to detection of trace synergist content in solid-state synergistic fertilizer |
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