CN106512928A - Sludge carbon for treating garbage penetrating fluid and preparation method thereof - Google Patents
Sludge carbon for treating garbage penetrating fluid and preparation method thereof Download PDFInfo
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- CN106512928A CN106512928A CN201610850575.1A CN201610850575A CN106512928A CN 106512928 A CN106512928 A CN 106512928A CN 201610850575 A CN201610850575 A CN 201610850575A CN 106512928 A CN106512928 A CN 106512928A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
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Abstract
The invention discloses sludge carbon for treating garbage penetrating fluid. The sludge carbon is prepared by taking the sludge in an urban sewage plant as a main raw material, and preparing by adopting a ZnCl2 chemical activating method at suitable activating temperature, activating time, ZnCl2 concentration and raw material particle size. When the sludge carbon prepared by the invention is used, the garbage penetrating fluid can be treated; the treatment effect is good; the treatment cost is low; the waste of energy consumption is reduced; moreover, the sludge carbon is beneficial to protecting environment, saving resources, and feeding back to the society. Main pollutants can be removed within a short time. The sludge carbon is easy to operate, remarkable in effect and high in stability in a treatment process.
Description
Technical field
The invention belongs to technical field of waste water processing, is related to a kind of sludge carbon and sludge for processing refuse leachate
The preparation method of charcoal.
Background technology
Percolate refers to the moisture that rubbish contains in itself in refuse landfill, into the sleet water of landfill yard
And other moisture, deduct rubbish, the saturation moisture capacity of overburden layer, and a kind of high concentration for experiencing waste layer and overburden layer and being formed
Organic wastewater.The characteristics of percolate has different from general municipal sewage：BOD5 and COD concentration is high, tenor compared with
High, water quality and quantity change greatly, the content of ammonia nitrogen it is higher, microbial nutrition element ratio is lacked of proper care etc..
From the point of view of the situation of report is seen at present, waste incineration percolate treating process mostly be " pretreatment+biological treatment+
Advanced treating ".Biological treatment used as adopting anaerobic biological process+aerobe method the main part in technological process more.Percolate
The removable major part easily biodegradable organicses of Jing biological treatments, and remaining refractory organic, need to carry out advanced treating.It is deep
Degree process part much adopts membrane technology, especially nanofiltration (CNF), counter-infiltration (RO) or combinations thereof technique.Film
Isolation technics have it is safe and reliable, it is simple to operate, the advantages of separative efficiency is high, further can remove as further treatment technique
The polluters such as the undegradable organic matter of biochemical system, COD, BOD, are that effluent index reaches design requirement and provides safeguard.
In the processing method of percolate, it is most easy method by percolate and municipal sewage merging treatment.But fill out
Bury field and be typically remote from cities and towns, therefore its percolate has certain concrete difficulty with municipal sewage merging treatment, often has to certainly
Oneself is individually processed.The processing method of conventional percolate includes physical-chemical process and bioanalysis.Physical-chemical process mainly has
Charcoal absorption, chemical precipitation, Density Separation, chemical oxidation, electronation, ion exchange, film dialysis, air lift and wet oxidation
Various methods such as method, when COD is 2000～40000mg/L, the COD clearances of physical chemistry method are up to 50%～87%.And life
Thing process is compared, and materializing strategy is not changed by water quality and quantity and affected, and effluent quality is more stable, especially to BOD5/COD ratios
Value relatively low (0.07～0.20) is difficult to the percolate carried out a biological disposal upon, and has preferable treatment effect.But physical chemistry method is processed into
This is higher, is unsuitable for the process of big yield percolate.In practice with it is more be biochemical process, biological treatment is usual
The features such as with reliability, economical and efficient, be the common method for processing percolate.But the use of bioanalysis and efficiency can be because
A large amount of difficult degradations in percolate, the presence of toxic organic compound and be restricted.Percolate for example after biochemical treatment
In still suffer from a large amount of phenols, cycloalkane, carboxylic acid type organic, it is necessary to could qualified discharge after advanced treating.Both at home and abroad
Scholar proposes many theoretical and methods to the advanced treating of percolate, but these methods cut both ways, therefore searches out
A kind of environmentally friendly, efficient, energy-conservation leachate treatment technology is significant
Activated carbon is a kind of adsorbent of energy effective process percolate, in municipal sewage plant, activated sludge
It is the byproduct of sewage disposal system generation, containing available resources such as substantial amounts of organic matter, humus, through certain process
Afterwards, good sorbing material can be changed into.At present, its preparation technology includes carbonizing, activates two steps.Gas activation (vapor
Method) it is to remove the hydrocarbon between the carbon skeleton for being fixed on composition, form loose structure.Heating be from the beginning of outside raw material,
From table and inner formation micropore, and new micropore could can not be formed through considerable time, therefore number cells are limited.Also,
The sludge carbon obtained using said method process, the content of beary metal in active sludge carbon is compared with the content of beary metal in raw sewage simultaneously
Do not substantially reduce, i.e., its adsorption capacity is to a certain degree limited, had a strong impact on its extensive application.Additionally, processing rubbish
After percolate, often there is absorption not thoroughly, discharge standard problem not up to standard.
In consideration of it, a kind of preparation method of sludge carbon of research, while the method for processing the process of refuse leachate using which,
It is problem demanding prompt solution of the present invention.
The content of the invention
Therefore, the technical problem to be solved is to overcome above-mentioned technological deficiency in prior art, so as to propose
A kind of preparation method of sludge carbon, while the method for processing the process of refuse leachate using which.
For this purpose, the present invention provides a kind of preparation method of sludge carbon, comprise the following steps：
S1, the sludge fetched from Sewage Plant is spontaneously dried at the shady and cool ventilation, then dried sludge is put into into electric heating
Further dehydrate to constant weight at 115-120 DEG C in air dry oven；
S2 and then 60-70 mesh sieves are crossed after sludge after drying and dehydrating size-reduced machine is crushed, with solid-to-liquid ratio 1：5 2.5-
The ZnCl of 3.5mol/L2Activator solution hybrid infusion, dipping temperature are 50-60 DEG C, and dip time is 48h；
S3 and then sample is dried into 50-55h at 115-120 DEG C；
S4, dried sludge is placed in the quartz ampoule of OTL1200 type tube type resistance furnaces, with 200-240m1/min
Speed be passed through N in quartz ampoule2, in N2Under atmosphere, resistance furnace is warming up to 750 DEG C of pyrolysis temperature with the heating rate of 20 DEG C/min
Degree, and 80min is stopped at this temperature；
After S5, pyrolytic process terminate, sample is in N2Atmosphere under be cooled to room temperature；
S6, thermal decomposition product is washed with the hydrochloric acid solution of 5mol/L dipping 20min, then washed with 60 DEG C of deionized water repeatedly
Wash, until water outlet pH is 7；
Product after S7, washing is dried to constant weight, grinding at 120 DEG C, obtains final product sludge carbon finished product after sieving.
In said method, it is preferred that in S2, its solid-to-liquid ratio 1：The ZnCl of 5 3.0mol/L2Activator solution mixing leaching
Stain, dipping temperature are 55 DEG C, and dip time is 48h.
Preferably, in S1,3% lime, 5% flyash is additionally added in the sludge fetched from Sewage Plant.
Meanwhile, the present invention also provides a kind of technique for processing percolate, comprises the steps：By garbage filter
Liquid pump is continuously input into O3 contacted oxidation post, while being continuously passed through ozone, the water after ozone oxidation enters volume and is
The water butt of 1000L is temporarily stored and is removed residual ozone, is filled through the BAC filter tanks purification of described sludge carbon afterwards
Water outlet afterwards.
Preferably, the BAC filter tanks be PVC materials, diameter 0.14X1.6m；Supporting layer be 3-5cm cobblestones, high 10cm；
Filler, using the sludge carbon for completing biofilm, is 3-4mm column sludge carbons, and porosity 30%, filler floor height lm, volume 15.4L have
Effect volume 4.6L；Flow of inlet water is controlled by peristaltic pump；Water temperature is controlled at 20-25 DEG C.
Preferably, ozone dosage 292mg03/ L water, when the sludge-based activated carbon time of staying is 4.3h, ozone-sludge base
Activated carbon advanced treating waste incineration percolate bio-chemical effluent, can make water outlet COD be less than discharge standard in 2/3 run time
100mg/L, colourity then can stably reaching standards.
The above-mentioned technical proposal of the present invention has advantages below compared to existing technology：
(1) a kind of sludge carbon for processing percolate that the present invention is provided, by based on municipal sewage sludge
Raw material is wanted, using ZnCl2Chemical activation method, in suitable activation temperature, soak time, ZnCl2Prepare when concentration, raw material granularity
And come, particularly add a small amount of lime, flyash so that the property indices of sludge carbon have clear improvement.
(2) high treating effect：Percolate is processed with the sludge carbon, can accomplish to realize that one-level A is discharged at short notice,
More than 15000 COD is reduced to into 2500 or so；
(3) processing cost is low：The sludge carbon for preparing in this way, preparation cost are low, and the chemical Treatment that the compares cycle is more
Short, sludge volume needed for the waste water of the same volume of process is less, with obvious cost advantage, with the popularity for adapting to.
(4) the method processes percolate, the waste of reducing energy consumption, and is beneficial to environmental protection, economizes on resources, favorably
In repaying debt to society；Nitrogen-containing heterocycle compound, aromatic compound, nitrile, ether, organic acid and olefines chemical combination can effectively be removed
Thing.
Description of the drawings
Fig. 1 is the surface texture figure of 2 sludge carbon of raw sewage and embodiment of the present invention.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, with reference to embodiments, to the present invention
Technical scheme be clearly and completely described, it is clear that described embodiment be only a part of embodiment of the invention, and
It is not all, of embodiment.Specific embodiment described herein only to explain the present invention, is not intended to limit the present invention.
Based on the embodiment in the present invention, it is all that those of ordinary skill in the art are obtained under the premise of creative work is not made
Other embodiment, belongs to the scope of protection of the invention.
The preparation of 1 sludge carbon of embodiment
S1, the sludge fetched from Sewage Plant is spontaneously dried at the shady and cool ventilation, then dried sludge is put into into electric heating
Further dehydrate to constant weight at 120 DEG C in air dry oven；
S2 and then 65 mesh sieves are crossed after sludge after drying and dehydrating size-reduced machine is crushed, with solid-to-liquid ratio 1：5 3mol/L's
ZnCl2Activator solution hybrid infusion, dipping temperature are 55 DEG C, and dip time is 48h；
S3 and then sample is dried into 55h at 120 DEG C；
S4, dried sludge is placed in the quartz ampoule of OTL1200 type tube type resistance furnaces, with the speed of 240m1/min
Rate is passed through N in quartz ampoule2, in N2Under atmosphere, resistance furnace is warming up to 750 DEG C of pyrolysis temperature with the heating rate of 20 DEG C/min,
And 80min is stopped at this temperature；
After S5, pyrolytic process terminate, sample is in N2Atmosphere under be cooled to room temperature；
S6, thermal decomposition product is washed with the hydrochloric acid solution of 5mol/L dipping 20min, then washed with 60 DEG C of deionized water repeatedly
Wash, until water outlet pH is 7；
Product after S7, washing is dried to constant weight, grinding at 120 DEG C, obtains final product sludge carbon finished product after sieving.
The preparation of 2 sludge carbon of embodiment
S1, the sludge fetched from Sewage Plant is added 3% lime of sludge weight, 5% flyash, the nature at the shady and cool ventilation
It is dried, then dried sludge is put in electric drying oven with forced convection further dehydrates to constant weight at 120 DEG C,；
S2 and then 65 mesh sieves are crossed after sludge after drying and dehydrating size-reduced machine is crushed, with solid-to-liquid ratio 1：5 3mol/L's
ZnCl2Activator solution hybrid infusion, dipping temperature are 55 DEG C, and dip time is 48h；
S3 and then sample is dried into 55h at 120 DEG C；
S4, dried sludge is placed in the quartz ampoule of OTL1200 type tube type resistance furnaces, with the speed of 240m1/min
Rate is passed through N in quartz ampoule2, in N2Under atmosphere, resistance furnace is warming up to 750 DEG C of pyrolysis temperature with the heating rate of 20 DEG C/min,
And 80min is stopped at this temperature；
After S5, pyrolytic process terminate, sample is in N2Atmosphere under be cooled to room temperature；
S6, thermal decomposition product is washed with the hydrochloric acid solution of 5mol/L dipping 20min, then washed with 60 DEG C of deionized water repeatedly
Wash, until water outlet pH is 7；
Product after S7, washing is dried to constant weight, grinding at 120 DEG C, obtains final product sludge carbon finished product after sieving.
The preparation of 3 sludge carbon of embodiment
S1, the sludge fetched from Sewage Plant is spontaneously dried at the shady and cool ventilation, then dried sludge is put into into electric heating
Further dehydrate to constant weight at 100 DEG C in air dry oven；
S2 and then 100 mesh sieves are crossed after sludge after drying and dehydrating size-reduced machine is crushed, with solid-to-liquid ratio 1：3 2mol/L
ZnCl2Activator solution hybrid infusion, dipping temperature are 75 DEG C, and dip time is 24h；
S3 and then sample is dried into 48h at 100 DEG C；
S4, dried sludge is placed in the quartz ampoule of OTL1200 type tube type resistance furnaces, with the speed of 160m1/min
Rate is passed through N in quartz ampoule2, in N2Under atmosphere, resistance furnace is warming up to 600 DEG C of pyrolysis temperature with the heating rate of 15 DEG C/min,
And 60min is stopped at this temperature；
After S5, pyrolytic process terminate, sample is in N2Atmosphere under be cooled to room temperature；
S6, thermal decomposition product is washed with the hydrochloric acid solution of 3mol/L dipping 20min, then washed with 80 DEG C of deionized water repeatedly
Wash, until water outlet pH is 6；
Product after S7, washing is dried to constant weight, grinding at 100 DEG C, obtains final product sludge carbon finished product after sieving.
The preparation of 4 sludge carbon of embodiment
S1, the sludge that will be fetched from Sewage Plant, add 3% lime of sludge weight, 5% flyash, at the shady and cool ventilation from
So it is dried, then dried sludge is put in electric drying oven with forced convection further dehydrates to constant weight at 100 DEG C；
S2 and then 100 mesh sieves are crossed after sludge after drying and dehydrating size-reduced machine is crushed, with solid-to-liquid ratio 1：3 2mol/L
ZnCl2Activator solution hybrid infusion, dipping temperature are 75 DEG C, and dip time is 24h；
S3 and then sample is dried into 48h at 100 DEG C；
S4, dried sludge is placed in the quartz ampoule of OTL1200 type tube type resistance furnaces, with the speed of 160m1/min
Rate is passed through N in quartz ampoule2, in N2Under atmosphere, resistance furnace is warming up to 600 DEG C of pyrolysis temperature with the heating rate of 15 DEG C/min,
And 60min is stopped at this temperature；
After S5, pyrolytic process terminate, sample is in N2Atmosphere under be cooled to room temperature；
S6, thermal decomposition product is washed with the hydrochloric acid solution of 3mol/L dipping 20min, then washed with 80 DEG C of deionized water repeatedly
Wash, until water outlet pH is 6；
Product after S7, washing is dried to constant weight, grinding at 100 DEG C, obtains final product sludge carbon finished product after sieving.
The preparation of 5 sludge carbon of embodiment
S1, the sludge fetched from Sewage Plant is added 1% lime of sludge weight, 2% flyash, the nature at the shady and cool ventilation
It is dried, then dried sludge is put in electric drying oven with forced convection further dehydrates to constant weight at 120 DEG C,；
S2 and then 65 mesh sieves are crossed after sludge after drying and dehydrating size-reduced machine is crushed, with solid-to-liquid ratio 1：5 3mol/L's
ZnCl2Activator solution hybrid infusion, dipping temperature are 55 DEG C, and dip time is 48h；
S3 and then sample is dried into 55h at 120 DEG C；
S4, dried sludge is placed in the quartz ampoule of OTL1200 type tube type resistance furnaces, with the speed of 240m1/min
Rate is passed through N in quartz ampoule2, in N2Under atmosphere, resistance furnace is warming up to 750 DEG C of pyrolysis temperature with the heating rate of 20 DEG C/min,
And 80min is stopped at this temperature；
After S5, pyrolytic process terminate, sample is in N2Atmosphere under be cooled to room temperature；
S6, thermal decomposition product is washed with the hydrochloric acid solution of 5mol/L dipping 20min, then washed with 60 DEG C of deionized water repeatedly
Wash, until water outlet pH is 7；
Product after S7, washing is dried to constant weight, grinding at 120 DEG C, obtains final product sludge carbon finished product after sieving.
The preparation of 6 sludge carbon of embodiment
S1, the sludge fetched from Sewage Plant is added 5% lime of sludge weight, 7% flyash, the nature at the shady and cool ventilation
It is dried, then dried sludge is put in electric drying oven with forced convection further dehydrates to constant weight at 120 DEG C,；
S2 and then 65 mesh sieves are crossed after sludge after drying and dehydrating size-reduced machine is crushed, with solid-to-liquid ratio 1：5 3mol/L's
ZnCl2Activator solution hybrid infusion, dipping temperature are 55 DEG C, and dip time is 48h；
S3 and then sample is dried into 55h at 120 DEG C；
S4, dried sludge is placed in the quartz ampoule of OTL1200 type tube type resistance furnaces, with the speed of 240m1/min
Rate is passed through N in quartz ampoule2, in N2Under atmosphere, resistance furnace is warming up to 750 DEG C of pyrolysis temperature with the heating rate of 20 DEG C/min,
And 80min is stopped at this temperature；
After S5, pyrolytic process terminate, sample is in N2Atmosphere under be cooled to room temperature；
S6, thermal decomposition product is washed with the hydrochloric acid solution of 5mol/L dipping 20min, then washed with 60 DEG C of deionized water repeatedly
Wash, until water outlet pH is 7；
Product after S7, washing is dried to constant weight, grinding at 120 DEG C, obtains final product sludge carbon finished product after sieving.
The process of 7 percolate of embodiment
S8, percolate pump is continuously input into into O3 contacted oxidation post, while ozone is continuously passed through, through ozone oxygen
Water after change enters the water butt that volume is 1000L and is temporarily stored and removed residual ozone, has been filled through embodiment afterwards
Water outlet after the BAC filter tanks purification of the sludge carbon described in one of 1-6.
Wherein described BAC filter tanks be PVC materials, diameter 0.14X1.6m；Supporting layer be 3-5cm cobblestones, high 10cm；Fill out
Material, using the sludge carbon of biofilm is completed, is 3-4mm column sludge carbons, porosity 30%, filler floor height lm, volume 15.4L, effectively
Volume 4.6L；Flow of inlet water is controlled by peristaltic pump；Water temperature is controlled at 20-25 DEG C.
Wherein, ozone dosage 292mg03/ L water, when the sludge-based activated carbon time of staying is 4.3h, ozone-sludge base is lived
Property charcoal advanced treating waste incineration percolate bio-chemical effluent, can make water outlet COD in 2/3 run time be less than discharge standard
100mg/L, colourity then can stably reaching standards.
Because volatile matter can be decomposed so as to form volatile matter in pore space structure, therefore sludge carbon during pyrolysis
Content is to judge whether sludge is properly prepared into an important indicator of activated carbon.Further, will be prepared in the embodiment of the present invention
Sludge carbon carry out Industrial Analysis, concrete outcome is shown in Table 1.
The Industrial Analysis of 1 raw sewage of table and sludge carbon
| Raw material | Volatile matter | Ash content | Fixed carbon |
| Sludge | 70.34 | 20.11 | 9.55 |
| Embodiment 1 | 32.90 | 35.12 | 31.98 |
| Embodiment 2 | 21.00 | 30.13 | 48.87 |
| Embodiment 3 | 25.90 | 33.45 | 40.65 |
| Embodiment 4 | 32.78 | 35.46 | 31.76 |
| Embodiment 5 | 37.90 | 38.23 | 23.87 |
| Embodiment 6 | 35.27 | 31.09 | 33.64 |
From 1 result of table, the sludge carbon that embodiment 2 is prepared, which fixes carbon content highest, relative to embodiment 1,
3-6 is significantly improved.
As can be seen from Figure 1：Relatively raw sewage and 2 sludge carbon of embodiment understand that sludge carbon surface roughness substantially increases,
Hole increases change greatly and is randomly distributed, and this causes which to have very excellent adsorption capacity.In addition, although omit in the present invention
The surface texture of sludge carbon in embodiment 1,3-6, but during practice examining, it was observed that compared with Example 2, embodiment 1,3-
In 6, be not as obvious as embodiment 2, hole increases the degree for becoming big and is also not so good as embodiment 2 for the surface roughness increase of sludge carbon.
Further, sludge carbon prepared in the embodiment of the present invention is carried out into specific surface area contrast, concrete outcome is shown in Table 2 for original
Sludge, sludge carbon, the specific surface area contrast of commodity charcoal.
2 raw sewage of table carries out specific surface area contrast with sludge carbon
| Raw material | Specific surface area | Average pore size |
| Raw sewage | 3.12 | 25.34 |
| Commodity charcoal | 678.1 | 3.45 |
| Embodiment 1 | 230.4 | 8.12 |
| Embodiment 2 | 343.1 | 4.09 |
| Embodiment 3 | 289.2 | 7.78 |
| Embodiment 4 | 256.9 | 10.12 |
| Embodiment 5 | 278.3 | 6.99 |
| Embodiment 6 | 220.3 | 9.34 |
2 result of table shows that the specific surface area of sludge carbon prepared by different condition is significantly larger than the specific surface area of raw sewage, puts down
Aperture is obviously reduced compared with raw sewage, but still is below the specific surface area of commodity charcoal.Especially, the sludge that prepared by embodiment 2
, compared to sludge carbon in embodiment 1,3-6, its specific surface area is significantly superior with the improvement of average pore size for charcoal.
Further, sludge carbon prepared in the embodiment of the present invention is used for the process of percolate, concrete grammar to be shown in
Embodiment 7, concrete outcome is shown in Table 3.
2 raw sewage of table and content of beary metal contrast in sludge carbon leachate
3 result of table shows, after sludge carbon prepared by different condition processes percolate, the weight in its sludge carbon leachate
Tenor greatly reduces compared with the content of beary metal in raw sewage.Especially, the sludge carbon that prepared by embodiment 2 is compared to embodiment
1st, the content of beary metal in 3-6 in sludge carbon leachate is reduced and is become apparent from.
Obviously, the experiment condition for adopting in above-described embodiment is only intended to clearly illustrate example, and not right
The restriction of embodiment.For those of ordinary skill in the field, which can also be made on the basis of the above description
The change or variation of its multi-form.There is no need to be exhaustive to all of embodiment.And thus it is extended
Obvious change or change still in the protection domain of the invention among.
Claims (6)
1. a kind of preparation method of sludge carbon, comprises the following steps：
S1, the sludge fetched from Sewage Plant is spontaneously dried at the shady and cool ventilation, then dried sludge is put into into electric heating air blast
Further dehydrate to constant weight at 115-120 DEG C in drying box；
S2 and then 60-70 mesh sieves are crossed after sludge after drying and dehydrating size-reduced machine is crushed, with solid-to-liquid ratio 1：5 2.5-
The ZnCl of 3.5mol/L2Activator solution hybrid infusion, dipping temperature are 50-60 DEG C, and dip time is 48h；
S3 and then sample is dried into 50-55h at 115-120 DEG C；
S4, dried sludge is placed in the quartz ampoule of OTL1200 type tube type resistance furnaces, with the speed of 200-240m1/min
Rate is passed through N in quartz ampoule2, in N2Under atmosphere, resistance furnace is warming up to 750 DEG C of pyrolysis temperature with the heating rate of 20 DEG C/min,
And 80min is stopped at this temperature；
After S5, pyrolytic process terminate, sample is in N2Atmosphere under be cooled to room temperature；
S6, thermal decomposition product is washed with the hydrochloric acid solution of 5mol/L dipping 20min, then with 60 DEG C of deionized water cyclic washing,
Until water outlet pH is 7；
Product after S7, washing is dried to constant weight, grinding at 120 DEG C, obtains final product sludge carbon finished product after sieving.
2. the preparation method of sludge carbon according to claim 1, it is characterised in that in S2, its solid-to-liquid ratio 1：5
The ZnCl of 3.0mol/L2Activator solution hybrid infusion, dipping temperature are 55 DEG C, and dip time is 48h.
3. the preparation method of sludge carbon according to claim 1, it is characterised in that in S1, what is fetched from Sewage Plant
3% lime, 5% flyash is additionally added in sludge.
4. a kind of technique for processing percolate, comprises the steps：Percolate pump is continuously input into into ozone
Catalytic oxidation post, while being continuously passed through ozone, the water after ozone oxidation enters the water butt that volume is 1000L and carries out temporarily
Residual ozone is stored and removes, water outlet after the BAC filter tanks purification of the sludge carbon for being filled through afterwards having the right described in requirement 1.
5. the technique for processing percolate according to claim 4, it is characterised in that the BAC filter tanks are PVC
Material, diameter 0.14X 1.6m；Supporting layer be 3-5cm cobblestones, high 10cm；Filler, using the sludge carbon for completing biofilm, is 3-
4mm column sludge carbons, porosity 30%, filler floor height lm, volume 15.4L, effective volume 4.6L；Flow of inlet water passes through peristaltic pump
To control；Water temperature is controlled at 20-25 DEG C.
6. the technique for processing percolate according to claim 5, it is characterised in that ozone dosage
292mg03/ L water, when the sludge-based activated carbon time of staying is 4.3h, ozone-sludge-based activated carbon advanced treating waste incineration is oozed
Filtrate bio-chemical effluent, can make water outlet COD in 2/3 run time less than discharge standard 100mg/L, and colourity then stably can reach
Mark.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI643815B (en) * | 2017-09-13 | 2018-12-11 | 國立宜蘭大學 | Method for preparing high specific surface area sewage sludge carbon material, active carbon material and the use thereof |
| CN110092553A (en) * | 2019-04-10 | 2019-08-06 | 浙江清风源环保科技有限公司 | A method of based on pyrolyzing sludge curing heavy metal |
| CN110282624A (en) * | 2019-07-10 | 2019-09-27 | 广州市净水有限公司 | A method of active carbon is prepared using sludge |
| CN110327881A (en) * | 2019-07-09 | 2019-10-15 | 南京永能新材料有限公司 | A kind of garbage deodorant and preparation method thereof |
| CN113117654A (en) * | 2021-05-21 | 2021-07-16 | 江西中江环保集团股份有限公司 | Preparation method of adsorbent based on municipal sludge |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI643815B (en) * | 2017-09-13 | 2018-12-11 | 國立宜蘭大學 | Method for preparing high specific surface area sewage sludge carbon material, active carbon material and the use thereof |
| CN110092553A (en) * | 2019-04-10 | 2019-08-06 | 浙江清风源环保科技有限公司 | A method of based on pyrolyzing sludge curing heavy metal |
| CN110327881A (en) * | 2019-07-09 | 2019-10-15 | 南京永能新材料有限公司 | A kind of garbage deodorant and preparation method thereof |
| CN110327881B (en) * | 2019-07-09 | 2022-09-30 | 南京永能新材料有限公司 | Garbage deodorant and preparation method thereof |
| CN110282624A (en) * | 2019-07-10 | 2019-09-27 | 广州市净水有限公司 | A method of active carbon is prepared using sludge |
| CN113117654A (en) * | 2021-05-21 | 2021-07-16 | 江西中江环保集团股份有限公司 | Preparation method of adsorbent based on municipal sludge |
| CN115739066A (en) * | 2022-10-31 | 2023-03-07 | 西安建筑科技大学 | Biochar catalyst, preparation method thereof, and landfill leachate treatment system and method |
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