CN106673399B - Municipal sludge is mixed to adjust modification agent, sludge semi-dry method - Google Patents
Municipal sludge is mixed to adjust modification agent, sludge semi-dry method Download PDFInfo
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- CN106673399B CN106673399B CN201510758318.0A CN201510758318A CN106673399B CN 106673399 B CN106673399 B CN 106673399B CN 201510758318 A CN201510758318 A CN 201510758318A CN 106673399 B CN106673399 B CN 106673399B
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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
-
- 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
-
- 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
- C02F11/004—Sludge detoxification
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/10—Drying by heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/20—Dewatering by mechanical means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/12—Sludge, slurries or mixtures of liquids
Abstract
It adjusts upgraded products and method ineffective to mud decrement for sludge in the prior art is mixed, eventually leads to the practical defect for utilizing disposal efficiency to reduce of sludge, the present invention provides a kind of mixed tune modification agent of municipal sludge and its application methods.The mixed tune modification agent of municipal sludge of the present invention includes component A, component B, component C, and wherein component A is the mixed solution of bamboo-vinegar Yu lactobacillus-fermented stoste, and component B is 30% hydrogen peroxide solution, and component C is 30% multiple poly-aluminium solution.The application method of product is that each component is sequentially added into sludge, stirs and adjust pH value, adjusts and reform the sludge after matter after layering up to mixed.The present invention also provides sludge semi-dry method, be will mix adjust and reform matter after sludge through physics filters pressing.Product of the present invention component is simple, sludge modification effect is good, application method simple process is easily achieved, sludge semi-dry method can be such that the sterilization, deodorization, deep dehydration of Treatment of Sludge once completes, and dehydration reduced training is obvious, can be improved sludge treatment efficiency.
Description
Technical field
The present invention relates to a kind of municipal sludge processing product and methods, adjust modification agent more particularly to a kind of municipal sludge is mixed
And its application method and a kind of semi-oriented method of municipal sludge, belong to environmental chemical engineering, sludge treatment field.
Background technique
Municipal sludge is the product of sewage treatment, is mainly derived from primary sedimentation pond, the secondary precipitation of sewage treatment process
The process procedures such as pond, gravity concentration tank.With the continuous improvement of China's urban wastewater treatment rate, urban sewage treatment plant sludge is produced
Amount also sharply increases.According to incompletely statistics, national urban sewage treatment plant sludge only has fraction to carry out sanitary landfills, soil at present
Ground utilizes, burning and building materials utilize, and most of processing disposition not standardized.Sludge contains pathogen, heavy metal
Secondary dirt easily is caused to underground water, soil etc. without disposition is effectively treated with poisonous and harmful substances such as persistent organisms
Dye, direct threatening environment safety and public health, substantially reduce the environmental benefit of sewage treatment facility.Therefore at municipal sludge
Reason disposition becomes urgent problem during urban development.
Municipal sludge be a kind of moisture content it is high, it is bulky, often containing high concentration have a pollutant and easy smelly suspended of corruption
Liquid, also often containing poisonous and harmful toxic pollutants such as pathogen, parasitic ovum and heavy metals, hydrophily is strong, volatile solid content
Height, bigger than resistance value, dewatering is poor.Processing disposal technology to municipal sludge includes processing and two stages of disposition.Processing master
Refer to the process of sludge is stabilized, minimizing, harmless treatment.Disposition, which refers to, dissolves sludge after processing
Process is the ultimate aim of specific resistance to filtration.Sludge is a kind of clayey resource, and sludge treatment includes land use, burns
And building materials by, landfill etc. in the way of.
Building materialsization by be municipal sludge final disposal in the way of one of, and one of ideal mode.The building materials of sludge
It can be used for the material or product of engineering using manufacture construction material, final product using sludge as raw material is primarily referred to as.It builds
The major way that material utilizes has: sewage sludge sintering brickmaking, sludge for clinker firing (i.e. cement kiln collaboration processing disposition),
Sludge potting grain etc..
Desiccation/semi-oriented sludge incineration is to realize sludge by burning using the heat and additional auxiliary fuel in sludge
The process of thorough harmlessness disposing.It is to put into desiccation/semi-oriented sludge using steam power plant's cooperative disposal desiccation/semi-oriented sludge
Circulating fluidized bed boiler or coal-powder boiler burn, low using semi-oriented sludge ignition point caused by the loose bulk structure of semi-oriented sludge
The characteristics of, auxiliary heat supplying, and using steam power plant's waste heat as desiccation heat source, be at present ideal municipal sludge disposal options it
One.
Municipal sludge moisture content is very high.Under normal circumstances, sewage plant secondary settling tank moisture percentage in sewage sludge is 99% or more, sewage plant
Gravity concentration tank moisture percentage in sewage sludge is also 97% or so.Moisture percentage in sewage sludge is different, and state is not also identical, directly affects at it
The mode and means that reason, disposition can select.Therefore no matter any disposal options, all handled firstly the need of to sludge,
Its target is that municipal sludge stabilisation, minimizing are obtained desiccation/semi-oriented sludge.To solve this technical problem, the prior art
Mainly include two classes: one kind is to increase a variety of chemical reagent into primary sludge to facilitate chemical reaction, then to the sludge after reaction
The method that physics filters pressing, i.e. chemical modification are combined with physics filters pressing.The semi-oriented moisture percentage in sewage sludge that such methods obtain is about
It is 60%.Application number 2015101133096,104761116 A of application publication number CN Chinese invention patent application disclosed in one
The method of kind sludge normal-temperature deep dehydration joined 8 kinds of chemical reagent into sludge.This method is at high cost, and further makes sludge
Chemical property complicates, and further increases the difficulty of later-stage utilization.It is another kind of be added into primary sludge flyash, lime etc. with
Increase dry matter ratio in sludge.This method can not effectively reduce processing sludge quality, instead because of addition flyash, lime
The amount of pending mud and its mixed material is further increased, thus the practical of sludge is reduced using disposal efficiency, and
Increase subsequent sludge treatment amount and cost of disposal.
Summary of the invention
The purpose of the present invention is to the deficiencies in the prior art, provide that a kind of municipal sludge is mixed to adjust modification agent and its use
Method.The product can effectively change sludge glial state, facilitate sludge high-efficiency dehydration.The present invention also provides dirty using the municipal administration
The mixed sludge semi-dry method for adjusting modification agent to realize of mud.
To achieve the above object, present invention firstly provides a kind of mixed tune modification agent of municipal sludge, its technical solution is as follows:
A kind of municipal sludge is mixed to adjust modification agent, it is characterised in that: including component A, component B, component C；
The component A is the mixed solution of bamboo-vinegar Yu lactobacillus-fermented stoste, mixture
Product ratio is bamboo-vinegar 60%~80%, lactobacillus-fermented stoste 40%~20%；
The component B is the hydrogen peroxide solution of mass concentration 30%；
The component C is the multiple poly-aluminium solution of mass concentration 30%.
Above-mentioned municipal sludge is mixed to adjust modification agent to include three kinds of components.In component A, bamboo-vinegar is the process made charcoal in bamboo wood
The middle gas collecting bamboo wood and being generated in pyrolytic, and the liquids directly obtained after this gas is cooled down at normal temperature
Matter, without concentration or dilution.Lactobacillus-fermented stoste is the temperature and nutritional condition that artificial creation lactic acid bacteria is easy to breed, and is made
The liquid that lactic acid bacteria freely breeds under anaerobic fermentation state, without concentration or dilution.Municipal sludge of the present invention is mixed to be adjusted
A variety of natural polymer organic compounds, the inorganic compound of modification agent contained by by bamboo-vinegar in component A etc. and sludge
Middle component generation chemical reaction and the biodegrade activity of lactic acid bacteria, it is hydrophilic to reduce volatile solid content, reduction sludge
Property, reduce sludge smell.Component B, that is, 30% hydrogen peroxide solution of concentration is used for sludge oxidation disinfection.It is sulfuric acid that component C, which answers poly-aluminium,
Aluminium, hydrochloric acid, sulfuric acid, the preparation of nitrogen compound auxiliary agent a kind of common high polymer coagulant, by its macromolecule and institute's charging property,
It is being condensed into floccule with the colloidal particles and other suspended particulates promoted in sludge in sludge contact process and adsorbing, wind dirt
Dye object is separated with water body, to help to realize sludge dewatering.
The present invention also provides the mixed application methods for adjusting modification agent of above-mentioned municipal sludge, and its technical solution is as follows:
The mixed application method for adjusting modification agent of above-mentioned municipal sludge, it is characterised in that: component A is added into municipal sludge, fills
Divide stirring, component B is added, is sufficiently stirred, is adjusted to pH=7~11；Component C is added, is sufficiently stirred, it is dirty to supernatant and flocks
Mud layering, flocks sludge blanket are to mix to adjust and reform the sludge after matter.
Above-mentioned municipal sludge is mixed to adjust modification agent application method under optimum condition, each component additional amount are as follows: component A and municipal administration
Sludge volume ratio=0.5%~3%, component B and municipal sludge volume ratio=0.5%~1%, component C and municipal sludge volume
Than=0.1%~0.5%.Under usual conditions, adjusts pH value and use CaO, Ca (OH)2、Na2CO3、NaHCO3Any.
Through experiment test display, method for modifying is adjusted using the mixed municipal sludge for adjusting modification agent to realize of municipal sludge of the present invention is mixed
Obtained mixed matter sludge of adjusting and reforming due to having passed through chemical reaction reduces hydrophily, eliminates stink substances and sterilization,
It thus can further be sterilized by the deep dehydration of mechanism filter-pressing, the semi-oriented sludge of odorless.
The present invention further provides a kind of municipal administration realized using the mixed application method for adjusting modification agent of above-mentioned municipal sludge is dirty
The semi-oriented method of mud, its technical solution is as follows:
A kind of semi-oriented method of municipal sludge realized using the mixed application method for adjusting modification agent of above-mentioned municipal sludge, it is special
Sign is: by above-mentioned flocks sludge blanket sludge through filter press filters pressing.
It is mixed to adjust and reform matter sludge after filter press filters pressing through experiment test display, the semi-oriented moisture content of the cake of gained 46%~
52%, and odorless.The semi-oriented moisture percentage in sewage sludge of gained is further reduced to 40% or less after broken, natural air drying again.Sludge
Dehydration, reduction are fairly obvious, can further building materialsization utilize.Air-drying after semi-oriented cake crushing can use tunnel
Road formula forced ventilation drying or natural air drying.
Semi-oriented sludge obtained by the semi-oriented method of municipal sludge of the present invention can be used for incineration disposal, such as steam power plant, rubbish
Power generation by waste combustion factory cooperative disposal etc., it can also be used to the building materials utilization of resources such as produces fired brick, haydite, cement cooperative disposal,
Complete more complete sludge treatment.Accordingly, the present invention further provides a kind of sludge incineration method of disposal, technical solution is such as
Under:
A kind of municipal sludge incineration disposal method realized using the semi-oriented method of above-mentioned municipal sludge.This method is by this
The semi-oriented sludge that invention sludge semi-dry method obtains cooperates with power generation by waste combustion for garbage incinerating power plant.
Compared with prior art, the beneficial effects of the present invention are: (1) municipal sludge of the present invention is mixed to adjust the letter of modification agent component
Single, chemical reaction is few, is conducive to the chemical stability for improving sludge.(2) adjust modification agent can using municipal sludge of the present invention is mixed
Mixed to municipal sludge to adjust and reform matter, the mixed matter sludge of adjusting and reforming of gained can direct plunge into diaphragm filter press progress mechanism filter-pressing dehydration, can
So that the sterilization of Treatment of Sludge, deodorization, deep dehydration are once completed.(3) half-dried obtained by the semi-oriented method of municipal sludge of the present invention
Change moisture percentage in sewage sludge and be substantially below 50%, sludge reduction effect is obvious, can satisfy the requirement of further treatment and use.(4)
Municipal sludge of the present invention is mixed to adjust modification agent component simple, common, and processing cost is low；Its application method operating procedure is succinct, technique
Standard is low, and implementation cost is low, convenient for promoting.
Specific embodiment
Below with reference to embodiment, preferred embodiment of the invention is further described.
Embodiment one
Prepare a kind of mixed tune modification agent of municipal sludge.
1, raw material
Hydrogen peroxide: concentration 30%, technical grade
Bamboo-vinegar: commercially available
Lactobacillus-fermented stoste: commercially available
Multiple poly-aluminium: commercially available, technical grade adds water to be configured to the multiple poly-aluminium solution of mass concentration 30%.
2, it prepares
2.1 component A (bamboo vinegar lactic acid mixed liquor) preparation
Bamboo-vinegar, lactobacillus-fermented stoste are taken, is uniformly mixed according to 1.1 ratio of table.Gained bamboo vinegar lactic acid mixed liquor is independent
Packaging, is component A1, component A2, component A3 respectively.
1.1 bamboo vinegar lactic acid mixed liquor of table matches (unit: percent by volume)
| Number 1 | Number 2 | Number 3 | |
| Proportion, % | Proportion, % | Proportion, % | |
| Bamboo-vinegar | 60 | 70 | 80 |
| Lactobacillus-fermented stoste | 40 | 30 | 20 |
2.2 mixed tune modification agent component B preparations
Take 30% hydrogen peroxide independent packaging.
2.3 mixed tune modification agent component C preparations
Take 30% multiple poly-aluminium solution independent packaging.
Component A1, component B, component C, component A2, component B, component C, component A3, component B, component C, each composition municipal administration are dirty
Mud is mixed to adjust modification agent.
Embodiment two
The mixed use for adjusting modification agent of one gained municipal sludge of embodiment and sludge semi-dry.
1, raw material, equipment
The mixed modification agent of adjusting of municipal sludge: embodiment one is made
Municipal sludge: certain city's sludge of sewage treatment plant, moisture content 90%~97%
CaO: commercially available, technical grade
Diaphragm filter press: commercially available " Jing Jin " board full-automatic high-pressure diaphragm filter press XMAZGF20/800-U.
2, municipal sludge is mixed adjusts upgrading operation
Take 3 parts of each 5m of municipal sludge sample N1, N2, N33, component A1 or component A2 are separately added into sludge sample or component A3 is each
150L, uniform stirring 15min；It is separately added into component B 25L, uniform stirring 15min；CaO conditioning of mud is separately added into pH=7
~9；It is separately added into component C5L, uniform stirring 15min, stands 60min.It is clearly separated, pumps to supernatant and flocks sludge
Clear liquid, remaining flocks layer sludge are 9 parts of mixed output sludge adjust and reform after the completion of matter respectively.
Table 2.1 is mixed to adjust modifying process sludge sample
3, sludge press filtration operates
The mixed output sludge adjust and reform after the completion of matter is pumped into diaphragm filter press filters pressing respectively, filtration pressure 0.8Mpa,
Squeeze operating pressure 2.0Mpa.Sludge after filters pressing completes deep dehydration, obtains 9 parts of semi-oriented sludge sample.Semi-oriented sludge
Sample number is numbered with the mixed matter sludge sample of adjusting and reforming of table 2.1.
4, semi-oriented sludge detection
It is each from resulting 9 parts semi-oriented sludge samples respectively to take 3 samples to be detected at random, it is average to calculate testing result
Value.Testing result such as table 2.2.
The detection of the semi-oriented sludge sample of table 2.2
Testing result shows that the sludge that product mixes after adjusting and reforming matter through the invention can be dehydrated through one-time mechanical filters pressing to 50%
Left and right, and sterilization, deodorization is completed in gained sludge, shows that the sludge semi-dry technique implemented using this method can make municipal dirt
Mud sterilization, deodorization, deep dehydration are once completed.Moisture content is further reduced to gained sludge after broken, natural air drying again
40% or less.
Embodiment three
The mixed use for adjusting modification agent of one gained municipal sludge of embodiment, is not repeated with two something in common of embodiment,
The difference is that municipal sludge is mixed to adjust modification agent additional amount.
Municipal sludge is mixed to adjust upgrading operation: taking 3 parts of each 5m of municipal sludge sample M1, M2, M33, it is separately added into mud sample
Component A1 or component A2 or component A3 each 25L, uniform stirring 15min；Component B 50L, uniform stirring 15min is added；CaO is added
Conditioning of mud is to pH=9~11；Component C 25L, uniform stirring 15min is added, stands 60min.To supernatant and flocks sludge
It is clearly separated, pumps supernatant, remaining flocks layer sludge is 9 parts of mixed output sludge adjust and reform after the completion of matter respectively.
Table 3.1 is mixed to adjust modifying process sludge sample
Sludge press filtration operation: the output sludge mixed after the completion of adjusting and reforming matter is pumped into diaphragm filter press filters pressing, filterer respectively
Make pressure 0.8Mpa, squeezes operating pressure 2.0Mpa.Sludge after filters pressing completes deep dehydration, obtains semi-oriented sludge sample 9
Part.Semi-oriented sludge sample number is numbered with the mixed matter sludge sample of adjusting and reforming of table 3.1.
To the semi-oriented sludge after adjusting and reforming matter deep dehydration is mixed three times above, respectively takes three samples to be detected at random, tie
Fruit table 3.2.
The detection of the semi-oriented sludge sample of table 3.2
Testing result is shown, can make municipal sludge sterilization, deodorization, depth using the sludge semi-dry technique that this method is implemented
Degree dehydration is primary to be completed.Moisture content is further reduced to 40% or less to gained sludge after broken, natural air drying again.
Claims (7)
1. municipal sludge is mixed to adjust modification agent, it is characterised in that: including component A, component B, component C；
The component A is the mixed solution of bamboo-vinegar Yu lactobacillus-fermented stoste, and mixed volume ratio is bamboo-vinegar 60%
~80%, lactobacillus-fermented stoste 40%~20%；Component A and pending mud volume ratio=0.5%~3%；
The component B is the hydrogen peroxide solution of mass concentration 30%；Component B and pending mud volume ratio=0.5%~1%；
The component C is the multiple poly-aluminium solution of mass concentration 30%；Component C and pending mud volume ratio=0.1%~
0.5%.
2. mixed tune modification agent according to claim 1, it is characterised in that: bamboo-vinegar and lactic acid bacteria send out in the component A
The volume ratio of ferment stoste is bamboo-vinegar 70%, lactobacillus-fermented stoste 30%.
3. the mixed application method for adjusting modification agent of municipal sludge according to claim 1 or 2, it is characterised in that: to municipal dirt
Component A is added in mud, is sufficiently stirred, component B is added, is sufficiently stirred, is adjusted to pH=7~11, component C is added, is sufficiently stirred,
It is layered to supernatant and flocks sludge, flocks sludge blanket is to mix to adjust and reform the sludge after matter.
4. according to the method described in claim 3, it is characterized by: the municipal sludge moisture content 90%~97%.
5. the semi-oriented method of municipal sludge realized using the mixed application method for adjusting modification agent of municipal sludge described in claim 3,
It is characterized by: by the flocks sludge blanket sludge press filtration.
6. the semi-oriented method of municipal sludge according to claim 5, it is characterised in that: municipal sludge moisture content
90%~97%.
7. method according to claim 5 or 6, it is characterised in that: be adjusted to pH=9.
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