CN107758658A - One kind shaping active sludge carbon preparation method - Google Patents
One kind shaping active sludge carbon preparation method Download PDFInfo
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- CN107758658A CN107758658A CN201710940805.8A CN201710940805A CN107758658A CN 107758658 A CN107758658 A CN 107758658A CN 201710940805 A CN201710940805 A CN 201710940805A CN 107758658 A CN107758658 A CN 107758658A
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- sludge
- embryo
- active sludge
- shaping
- carbon
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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
-
- 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
- C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention provides one kind to be molded active sludge carbon preparation method, belongs to sludge of sewage treatment plant and utilizes field, for solving the problems, such as that conventional carbon use cost is higher and sludge of sewage treatment plant is disposed.The preparation method, the wet cake that sewage treatment plant is formed after de-watering extrusion first is fabricated to the block sludge of certain particle diameter, then forced air drying, it is and cross-linking modified in liquor zinci chloridi, sludge embryo after finally will be cross-linking modified is dried and high temperature cabonization in Muffle furnace is placed in after cleaning, so as to which active sludge carbon be made.Shaping active sludge carbon prepared by the present invention can not only substitute amount of activated charcoal, reduce operating cost, for the advanced treating of sewage treatment plant, also achieve the recycling of sludge, the problem of outlet for solving sewage plant sludge.
Description
Technical field
The present invention relates to sludge of sewage treatment plant to utilize technical field, more particularly to a kind of shaping active sludge carbon preparation side
Method.
Background technology
With the enhancing increased with disposal ability of municipal sewage plant's quantity, sludge yield also increasingly increases.According to
Statistics, in terms of the sludge of moisture content 80%, sludge total output of the whole nation since 2010 is increased with 10% speed every year, and with
Break through 30,000,000 tons.Substantial residual product of the sludge as sewage treatment plant, its complicated component, includes fiber, silt, animals and plants
Residuum, microbial bacteria micelle, heavy metal, the material etc. of organic matter.The sludge of complicated component is arbitrarily buried without processing, thrown aside
Serious secondary pollution will be caused to environment.Even if the more popular processing mode such as agricultural sludge, sludge incineration several years ago,
Not only secondary pollution natural environment, also creates the serious waste of large amount of organic matter, and the remaining energy cannot effectively utilize.
It is that research both domestic and external is hot at present by the way that active sludge carbon will be prepared into after sludge of sewage treatment plant activation heat treatment
One of point.The activated carbon prepared using sludge has the physics and chemical property similar to conventional carbon, such as abundant hole
Degree and good adsorption effect.Active sludge carbon is combined with biomembrance process, adsorption effect and micro- life using active sludge carbon
The organic matter that the degradation collaboration of thing is gone in water removal.Active sludge carbon provides suitable growing environment for the growth of microorganism,
Promote the growth of microorganism；The microorganism of sludge activity carbon surface can degrade the organic matter of its adsorption, change sludge and live
The adsorption equilibrium of property charcoal, promotes the regeneration of active sludge carbon.Therefore, active sludge carbon is in pollution waste's reclamation and sewage
Biological treatment in have a wide range of applications.
The content of the invention
It is not high for sludge of sewage treatment plant utilization ratio, or even the problem of cause secondary pollution to environment, the present invention carries
Active sludge carbon preparation method is molded for one kind, obtained active sludge carbon is mainly used in the advanced treating rank of sewage plant
Section.The shaping active sludge carbon preparation method avoids sludge of sewage treatment plant secondary pollution to caused by environment, realizes simultaneously
The comprehensive utilization of resources of discarded object.
The technical solution adopted for the present invention to solve the technical problems is：
One kind shaping active sludge carbon preparation method, comprises the following steps：
Step 1: obtained wet cake is fabricated to 10~20mm of particle diameter block sludge after de-watering extrusion by sludge, from
Sludge embryo of the moisture content 30% or so is obtained after so air-drying；
Step 2: weight meter, according to certain solid-liquid mass ratio, the sludge embryo prepared in the step 1 is added and is modified
In agent, post-crosslinking modified 24h is stirred；Modified sewage sludge embryo is made after removing supernatant liquor, the acid-base value of regulation modified sewage sludge embryo makes
It is neutrality；
Necessarily contain Step 3: the modified sewage sludge embryo in the step 2 is placed in dry to be made in 120 DEG C of air dry ovens
The dewatered sludge embryo of water rate；
Step 4: the dewatered sludge embryo in the step 3 is placed in into 1~2h of calcining in 550 DEG C of Muffle furnaces, it is dirty that shaping is made
Mud activated carbon.
Further, the solid-liquid mass ratio in the step 2 is 1:1~2.
Further, the modifying agent in the step 2 is 3mol/L liquor zinci chloridi.
Further, the step 2 includes first being cleaned the modified sewage sludge embryo twice with 1~2mol/L hydrochloric acid,
Then multipass is rinsed with clear water, untill flushing water pH is 6~7.
Further, certain moisture content is moisture content≤30% in the step 3.
Compared with prior art, the beneficial effects of the present invention are：
Shaping active sludge carbon preparation method provided by the invention, first forms sewage treatment plant after de-watering extrusion
Wet cake is fabricated to the block sludge of certain particle diameter, cross-linking modified in liquor zinci chloridi after natural air drying, afterwards changes crosslinking
Property after sludge embryo be cleaned and dried after be placed in high temperature cabonization in Muffle furnace, so as to be made active sludge carbon.The present invention makes full use of
Shaping active sludge carbon prepared by sewage treatment plant's dewatered sludge and organic matter therein can be used for the depth of sewage treatment plant
Processing stage, the recycling of waste sludge is realized, solve the problem of outlet after Treatment of Sludge.The shaping of the present invention is dirty
Mud method for preparation of active carbon, easy to operate, recycling sludge utilizes, and has preferable promotional value.
Brief description of the drawings
Fig. 1 is the SEM image of the shaping active sludge carbon of one embodiment of the invention.
Embodiment
A kind of shaping active sludge carbon preparation method proposed by the present invention is made below in conjunction with the drawings and specific embodiments into
One step describes in detail.According to following explanation, advantages and features of the invention will become apparent from.Below will be by cited embodiment
With reference to accompanying drawing, technology contents of the invention and feature are described in detail.It need to illustrate in addition, accompanying drawing is using very simplified shape
Formula and non-accurately ratio is used, only for the purpose of facilitating and clarifying the purpose of the embodiments of the invention.For narration side
Just, described below " on ", " under " the upper and lower direction with accompanying drawing is consistent, but this can not turn into technical solution of the present invention
Limitation.
The present invention principle be：The wet cake that sludge caused by sewage plant is formed after de-watering extrusion is fabricated to certain grain
Footpath bulk sludge, it is cross-linking modified in liquor zinci chloridi after natural air drying, after cleaned drying in Muffle furnace high temperature cabonization,
Active sludge carbon is made.Shaping active sludge carbon avoids sludge of sewage treatment plant to environment made of the preparation method of the present invention
Caused by secondary pollution, while realize the comprehensive utilization of resources of discarded object.
Modifying agent is 3mol/L liquor zinci chloridi in the embodiment of the present invention.
Embodiment one
One kind shaping active sludge carbon preparation method, the preparation method comprise the following steps：
By sludge, the obtained wet cake after de-watering extrusion is fabricated to 10~20mm of particle diameter block sludge to step S1, natural
Sludge embryo of the moisture content 30% or so is obtained after air-drying；
Step S2 weight meters, according to 1:1 solid-liquid mass ratio, the sludge embryo prepared in step S1 is added in modifying agent,
Stir post-crosslinking modified 24h；Modified sewage sludge embryo is made after removing supernatant liquor；
Step S3 is first cleaned the sludge embryo in step S2 twice with 1mol/L hydrochloric acid, is then rinsed with clear water more
Time, untill flushing water pH is 6~7, so as to obtain modified sewage sludge embryo；
Modified sewage sludge embryo in step S3 is placed in drying in 120 DEG C of air dry ovens and moisture content≤30% is made by step S4
Dewatered sludge embryo；
Dewatered sludge embryo in step S4 is placed in 1~2h of calcining in 550 DEG C of Muffle furnaces by step S5, and shaping sludge activity is made
Charcoal.
After tested, obtained shaping active sludge carbon performance is as follows according to the method described above：
The particle diameter for being molded active sludge carbon is 15mm, and shaping active sludge carbon is 10mg/g to the adsorbance of methylene blue,
With good absorption property.
Embodiment two
One kind shaping active sludge carbon preparation method, the preparation method comprise the following steps：
By sludge, the obtained wet cake after de-watering extrusion is fabricated to 10~20mm of particle diameter block sludge to step S1, natural
Sludge embryo of the moisture content 30% or so is obtained after air-drying；
Step S2 weight meters, according to 1:2 solid-liquid mass ratio, the sludge embryo prepared in step S1 is added in modifying agent,
Stir post-crosslinking modified 24h；Modified sewage sludge embryo is made after removing supernatant liquor；
Step S3 is first cleaned the sludge embryo in step S2 twice with 1mol/L hydrochloric acid, is then rinsed with clear water more
Time, untill flushing water pH is 6~7, so as to obtain modified sewage sludge embryo；
Modified sewage sludge embryo in step S3 is placed in drying in 120 DEG C of air dry ovens and moisture content≤30% is made by step S4
Dewatered sludge embryo；
Dewatered sludge embryo in step S4 is placed in 1~2h of calcining in 550 DEG C of Muffle furnaces by step S5, and shaping sludge activity is made
Charcoal.
After tested, obtained shaping active sludge carbon performance is as follows according to the method described above：
The particle diameter for being molded active sludge carbon is 15mm, and shaping active sludge carbon is 12mg/g to the adsorbance of methylene blue,
With good absorption property.
In summary, shaping active sludge carbon preparation method provided by the invention, first squeezes sewage treatment plant through being dehydrated
The wet cake formed after pressure is fabricated to the block sludge of certain particle diameter, cross-linking modified in liquor zinci chloridi after natural air drying, most
Sludge embryo after afterwards will be cross-linking modified cleans and high temperature cabonization in Muffle furnace is placed in after drying, so as to which active sludge carbon be made.This
The shaping active sludge carbon that invention makes full use of sewage treatment plant's dewatered sludge and organic matter therein to prepare can be used for sewage
In the advanced treating stage for the treatment of plant, the recycling of waste sludge is realized, solves the problem of outlet after Treatment of Sludge.This
The shaping active sludge carbon preparation method of invention, easy to operate, recycling sludge utilizes, and has preferable promotional value.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair
Any change, the modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims
Scope.
Claims (5)
1. one kind shaping active sludge carbon preparation method, it is characterised in that comprise the following steps：
Step 1: obtained wet cake is fabricated to 10~20mm of particle diameter block sludge, natural wind after de-watering extrusion by sludge
Sludge embryo of the moisture content 30% or so is obtained after dry；
Step 2: according to certain solid-liquid mass ratio, the sludge embryo prepared in the step 1 is added in modifying agent, after stirring
Cross-linking modified 24h；Remove modified sewage sludge embryo is made after supernatant liquor, the acid-base value for adjusting the modified sewage sludge embryo is
Property；
Step 3: the modified sewage sludge embryo in the step 2 is placed in into drying in 120 DEG C of air dry ovens is made certain moisture content
Dewatered sludge embryo；
Step 4: the dewatered sludge embryo in the step 3 is placed in into 1~2h of calcining in 550 DEG C of Muffle furnaces, shaping sludge is made and lives
Property charcoal.
2. shaping active sludge carbon preparation method according to claim 1, it is characterised in that the solid-liquid in the step 2
Mass ratio is 1:1~2.
3. shaping active sludge carbon preparation method according to claim 1, it is characterised in that the modification in the step 2
Agent is 3mol/L liquor zinci chloridi.
4. shaping active sludge carbon preparation method according to claim 1, it is characterised in that the step 2 is included first
The modified sewage sludge embryo is cleaned twice with 1~2mol/L hydrochloric acid, then rinses multipass with clear water, until flushing water pH is 6
Untill~7.
5. shaping active sludge carbon preparation method according to claim 1, it is characterised in that necessarily contain in the step 3
Water rate is moisture content≤30%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710940805.8A CN107758658A (en) | 2017-10-11 | 2017-10-11 | One kind shaping active sludge carbon preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710940805.8A CN107758658A (en) | 2017-10-11 | 2017-10-11 | One kind shaping active sludge carbon preparation method |
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| Publication Number | Publication Date |
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| CN107758658A true CN107758658A (en) | 2018-03-06 |
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| CN201710940805.8A Pending CN107758658A (en) | 2017-10-11 | 2017-10-11 | One kind shaping active sludge carbon preparation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112661385A (en) * | 2020-12-31 | 2021-04-16 | 江苏大学 | Treatment method for deep dehydration of sludge |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1644495A (en) * | 2004-12-14 | 2005-07-27 | 南开大学 | Method for preparing active carbon from urban sewage treatment plant mud |
| CN100418621C (en) * | 2006-11-02 | 2008-09-17 | 上海交通大学 | Prepn of wet sludge carbonizing adsorbent |
| CN101391766A (en) * | 2008-10-21 | 2009-03-25 | 广西大学 | Method for preparing active carbon from pulping paper mill sludge |
| CN102701200A (en) * | 2012-05-14 | 2012-10-03 | 北京工业大学 | Method for preparing active carbon from municipal sludge by two-step thermal decomposition |
| CN102757047A (en) * | 2012-05-31 | 2012-10-31 | 北京林业大学 | Method for preparing cylindrical sludge-based activated carbon |
-
2017
- 2017-10-11 CN CN201710940805.8A patent/CN107758658A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1644495A (en) * | 2004-12-14 | 2005-07-27 | 南开大学 | Method for preparing active carbon from urban sewage treatment plant mud |
| CN100418621C (en) * | 2006-11-02 | 2008-09-17 | 上海交通大学 | Prepn of wet sludge carbonizing adsorbent |
| CN101391766A (en) * | 2008-10-21 | 2009-03-25 | 广西大学 | Method for preparing active carbon from pulping paper mill sludge |
| CN102701200A (en) * | 2012-05-14 | 2012-10-03 | 北京工业大学 | Method for preparing active carbon from municipal sludge by two-step thermal decomposition |
| CN102757047A (en) * | 2012-05-31 | 2012-10-31 | 北京林业大学 | Method for preparing cylindrical sludge-based activated carbon |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112661385A (en) * | 2020-12-31 | 2021-04-16 | 江苏大学 | Treatment method for deep dehydration of sludge |
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