CN107721375A - A kind of method that sewage treatment plant's dewatered sludge suppresses non-autoclaved and unburned wall bulk - Google Patents
A kind of method that sewage treatment plant's dewatered sludge suppresses non-autoclaved and unburned wall bulk Download PDFInfo
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- CN107721375A CN107721375A CN201711134150.1A CN201711134150A CN107721375A CN 107721375 A CN107721375 A CN 107721375A CN 201711134150 A CN201711134150 A CN 201711134150A CN 107721375 A CN107721375 A CN 107721375A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B30/00—Compositions for artificial stone, not containing binders
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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Abstract
The invention discloses a kind of method that sewage treatment plant's dewatered sludge suppresses non-autoclaved and unburned wall bulk, it is specially：Sludge of sewage treatment plant is dehydrated, modified sewage sludge is modified to obtain using seashell powder, ferrous sulfate, calcium hydroxide；Modified sewage sludge, seashell powder, calcium sulfate, silicon ash, slag charge, F14 liquid exciting agent and water are mixed into obtain compound；Compound, which is digested, must digest material；Digestion material, consolidating agent and YW type surfactants are mixed into obtain base material；Product blank is made in base material under stamping system；Product blank is entered into hot-air circular response after precuring to conserve, produces wall bulk.Have the beneficial effect that：The present invention solves the problems, such as effective processing of the dewatered sludge of sewage treatment plant and industrial residue or engineering dregs, recycling, cost is cheap, obtained non-burning brick compression strength is excellent, do not produce radioactivity, the wall bulk of plurality of specifications can be produced, moreover it is possible to be manufactured into the building element of various uses.
Description
Technical field
The present invention relates to a kind of sludge wall bulk, is suppressed more particularly, to a kind of sewage treatment plant's dewatered sludge non-evaporating
The method of unburned wall bulk.
Background technology
During the Collecting and dealing of municipal sewage, necessarily cause the generation of a large amount of sludge（According to statistics, the whole world is per annual meeting
Produce 1.75 hundred million tons of dewatered sludge amount）, China in development, population increase, the reinforcement of people's environmental consciousness and to environmental quality will
The raising asked, increasing waste water is set to need to handle.By the end of 2015, municipal sludge discharge capacity was up to 47,800,000 tons of t/
a（Dry）More than, the silt that is carried in raw sewage, fiber, plant and animal residues and its inhale organic matter attached to it, a huge sum of money
A kind of thick liquid matter-sludge that category, germ, virus, worm's ovum, colloid are formed, the municipal sludge of such enormous amount is as obtained not
To dealing carefully with, secondary pollution will be caused to environment, and bring the hidden danger of health.Meanwhile with the enhancing of nation-building,
Industrial to develop rapidly, industrial residue and engineering dregs quantity are growing day by day.Industrial residue is maximum as discharge capacity to be consolidated
The heavy metal such as body discarded object, the mercury included, chromium, lead, nickel, vanadium, molybdenum, iron, manganese and virus, germ, pathogen, to natural environment and
Health has serious harm and threat.China produces the industrial residue of more than one hundred billion ton every year and engineering waste residue, stacking account for
Ground area reaches millions of hectares, brings the environmental problems such as the pollution of dust and water body to turn into and restricts whole national economy health
The key factor of good circulation development.Sludge, the minimizing of industrial residue and engineering dregs, stabilisation, at innoxious, recycling
Put turns into extremely urgent problem.
The main method of processing sludge has at present：（1）Sludge landfill：Meeting polluted underground water source, endangers ecological environment；（2）
Sludge pours into marine：Marine site can be polluted, destroys marine ecological resources；（3）Sludge incineration：Processing cost is expensive, two poisonous evils
English carcinogen, exhaust emission air；（4）Fertilizer is made in sludge fermentation and desiccation：Waste time and energy, Accumulation of heavy metals pollution be present
Problem；（5）Sludge and clay mixed sintering common brick, a large amount of stench dioxin are produced during firing；（6）Sludge, waste residue natural curing,
Non-burning brick made of steam-cured, steam pressure technique, quality intensity is not high, during technology is just to be developed.It is non-burning brick at present to emerge in an endless stream, the skill
The product of art production is using industrial residue as primary raw material, and utilization ratio is high, and production cost accordingly reduces, but is only using passing
System technology, using the incorporation of cement as binder materials, product strength is improved with this, but unobvious, technology content are still effect
Traditional cement-based gelling material, using cement brickmaking, it is unfavorable for low energy expenditure, low environmental load, is less useful for realizing warp
The sustainable development of Ji, society and environment.Therefore, for more effectively using sludge and industrial residue or engineering dregs, it is necessary to
Seek a reliable and stable technological approaches, steady quality can be prepared, performance is excellent and security performance is good exempts from
Unburned wall bulk is steamed, to realize the sustainable development of economic, society and environment.
Prior art such as Authorization Notice No. is CN102775101B Chinese invention patent, discloses waterworks aluminium sludge
Making burn-free bricks, its raw material weight proportioning of soup processed are：Aluminium-containing sludge 70%~80% after the desiccation of waterworks, cement 10%~15%, raw stone
Ash 0.5%~0.8%, gelling agent 0.3%~0.5%, accelerator 0.2%~0.4%, sodium metasilicate 0.1%~0.15%, water 7%~15%.On
State it is non-burning brick take full advantage of reluctant discarded object, turn waste into wealth, saved resource and the energy, eliminate environmental pollution,
Production cost is low, has conserved but than conventional non-burning brick 1/3 day in advance.But the non-burning brick utilization cement makes consolidation raw material, obtains
Non-burning brick compression strength it is poor, and it is non-burning brick in heavy metal ion, pathogen be easy to overflow, potential safety hazard be present.
The content of the invention
It is an object of the invention to provide a kind of method that sewage treatment plant's dewatered sludge suppresses non-autoclaved and unburned wall bulk,
It this method solve the dewatered sludge of sewage treatment plant and effective processing of industrial residue or engineering dregs, recycling asked
Topic, this method will not only cause environmental pollution, and cost is cheap, and obtained non-burning brick morning is strong, high-strength, and compression strength is excellent
It is different, radioactivity is not produced, while the wall bulk with plurality of specifications can also be produced, moreover it is possible to be manufactured into the building of various uses
Component.
The present invention is directed to the problem of being mentioned in above-mentioned technology, and the technical scheme taken is：
A kind of method that sewage treatment plant's dewatered sludge suppresses non-autoclaved and unburned wall bulk, including sludge dewatering are dried and are modified, are mixed
Rolling, compound digestion are closed, digests and expects that mixing repeats rolling, shaped by fluid pressure, the maintenance of product blank, specifically includes following steps：
Sludge dewatering, which is dried, to be modified：Sludge of sewage treatment plant is dehydrated to moisture content 75-85%, under the control of autmatic measuring device,
Dewatered sludge 90-96 parts, seashell powder 3-9 parts, ferrous sulfate 1-3 parts, calcium hydroxide 0-0.5 parts are taken by weight, using dirt
Dredge pump, powder are pumped in sludge drier, are well mixed, are then dehydrated, the dehydration rate of sludge is reached more than 90%,
Modified sewage sludge is produced, is cooperated between each raw material of the step, the stink of sludge can be removed, sludge conditioning is turned into neutrality
(pH7-8.5), while the calcium content of sludge is improved, promotes seashell powder aquation progress, excite sludge, slag charge active function；
Mix rolling：Under the control of autmatic measuring device, modified sewage sludge 25-40 parts, seashell powder 4-8 parts, sulphur are taken by weight
Sour calcium 1-3 parts, silicon ash 3-7 parts, slag charge 35-47 parts, F14 liquid exciting agent 4-7 parts, water 5-8 parts, using ribbon conveyer, powder
Body pump is added to mixing grinding 2-6min in Wheel mill mixer, produces compound, compound is rolled in rolling by rolling
Power, it can be compacted and volume-diminished so that end article bulk density greatly improves, and then improves the performance of product, simultaneously
The step can excite the SiO that sludge, slag charge, seashell powder include2、CaO、Al2O3Active component in hot-air circular response mistake
Hydrated calcium silicate, drated calcium aluminate, stratlingite gelatinous mass are formed in journey, prepares, can also assist in for compacting bulk
The further aquation of modified sewage sludge, improve the performance of sludge；
Compound digests：Compound is inputted to slaking silos with ribbon conveyer, digests 1-4h at being 40-70 DEG C in temperature,
Digestion material is produced, the step carries out material digestion using successive slaking silo, and material is put into digestion work after by grinding
Skill, it is because sludge, slag charge, seashell powder and calcium sulfate need to digest, this is important processing step, the effect master of digestion process
If promoting exciting agent activated sludge, waste residue, the activity of dregs, next to that molded plastic is improved, the third is eliminating f-CaO and f-
Mgo and other factors leading to social instability influence；
Digestion material mixing repeats rolling：Under the control of autmatic measuring device, parts by weight are taken to digest material 82-94 parts, consolidating agent 5-
15 parts, YW type surfactant 1-7 parts, inputted to Wheel mill mixer, mixing and repeated using ribbon conveyer and pump type conveyer
Grinding 2-6min, the moisture content for adjusting digestion material with hot water produce base material, input reservoir tank is standby, above-mentioned YW to 10-17%
Type fluorine class surfactant is liquid aqueous solution, and it is to improve mix surface lubricity that it, which is acted on, reduces the dosage of water, the step
Seashell powder and industrial residue solubility can be increased so that exciting for the effective active component of silicon ash, slag powders, assist material
Chemical reaction mutually, increase sludge, industrial residue, dregs specific grain surface product and moisture, the touch opportunity of additive, fully swashs
Its activity is sent out, the base material can be carried out directly quick cementing to material granule at normal temperatures in addition, and the active component of consolidating agent is oozed
On the boundary for entering the basic granules of material, the hydrated calcium silicate that is inspired with exciting agent from sludge, seashell powder, industrial residue
Isogel collective effect, more powerful gelatification consolidation wall bulk is formed, using multicomponent super-composite effect, is assigned
Give the active component of mixing material to dilute peptizaiton, be allowed to form polycrystalline aggregate, while product can be made early strong, high-strength, Gu
Surely heavy metal ion, the pathogen included, Leaching is not exceeded, does not produce radioactivity, eliminates the hidden danger of harm；
Shaped by fluid pressure：Stamping system by base material from reservoir tank quantification input hydraulic pressure forming machine, product blank, punching press is made
Be molded wall bulk, standard tile product blank changes framed, mould, just can produce the hollow brick of all size, plurality of specifications
Decorative block kerbstone, retaining wall block, grass-planting brick, bank protection stone manufacture blank, hydroforming process pressure is according to product design
Intensity, pressure variable；
Product blank is supported：After product blank enters reative cell, nature precuring 45-50h during more than 10 DEG C of indoor temperature, indoor temperature
At less than 10 DEG C, hot-air is passed through, precuring time 7-9h is incubated at 40-50 DEG C, is supported after precuring into hot-air circular response
Shield, temperature slowly rise, and temperature is risen to 90-110 DEG C in 2-4h, slow cooling produces wall to 40-60 DEG C after constant temperature 2-4h
Body bulk, finished product storage, above-mentioned insulation precuring method are：Hot-air in reative cell is supplied by straight-through circulating hot-blast stove, is led directly to
Hot-air caused by circulating hot-blast stove is sent into reative cell by air-introduced machine and conveying airduct, and the cold air in reative cell is pumped into
Being heated in straight-through circulating hot-blast stove, the step promotes product blank to make further thermochemical reaction using heating power,
The gelling property of product is improved, assigns the higher intensity of product and excellent endurance quality.
To optimize above-mentioned technical proposal, the measure taken also includes：Dewatered sludge is dirty using municipal sewage plant's dehydration
The chemical composition of mud, its mineral composition and sludge is as described in table 1, table 2.
Table 1：The mineral composition of typical urban sludge of sewage treatment plant
The mineral composition of typical urban sludge of sewage treatment plant, because of regional economy, living condition is different and has any different, and this table belongs to non-
Statutory standards, only make reference.
Table 2：The chemical composition of typical urban sludge of sewage treatment plant
The chemical analysis of (industrial wastewater 40%, sanitary sewage 60%) sludge of typical urban sewage treatment plant, it is raw because of regional economy
Condition living and industrial wastewater are different with sanitary sewage discharge capacity ratio and have any different.
Table 2 is visible, and the main chemical compositions of typical urban sewage treatment plant are silica (SO2), calcium oxide (CaO),
Alundum (Al2O3) (Al2O3)。
The particle diameter fineness of seashell powder is 150-200 mesh, CaCO in seashell powder3Component content is 95-98%, is utilized
CaCO3Active ingredient increases calcium, strengthens the intensity of matrix, seashell powder is a kind of shellfish of marine organisms on the very long coastline in China
Shell, amount is more, is a kind extremely abundant ocean waste resource, and conveniently, powder processed is easy for collection, SeaShell is dried, is calcined, ball milling just
Rich calcium substance can be obtained.
The particle diameter fineness of silicon ash is 100-400 mesh, and silicon ash is process of the industrial furnace in high melt industrial silicon and ferrosilicon
In the flue dust that is escaped with waste gas, the silicon ash of processing is collected through special capturing device, its effect is active reinforcing agent.
Particle diameter≤3mm of slag charge, slag charge are industrial residue or engineering dregs, and industrial residue is what is given off in industrial production
Solid waste, solid waste are slag or slag or red mud or silicon manganese slag or ferroalloy slag or flyash or clinker or nature
Gangue or chromium slag or granulated copper slag or lead skim or phosphorus slag or carbide slag or ardealite or CHARACTERISTICS OF TAILINGS SAND or the useless molding sand of foundry industry or stone
The artificial sand or building waste that English matter barren rock or leftover bits and pieces crush crush slag, and engineering dregs are selected from underground engineering dregs or ground work
Journey dregs, the chemical composition of part industrial residue is referring to table 3.
Table 3：The chemical composition of part industrial residue
Compared with prior art, the advantage of the invention is that：
1. the present invention suppresses the side of non-autoclaved and unburned wall bulk using sewage treatment plant's dewatered sludge, industrial residue, engineering dregs
Method, the silica included using sludge, waste residue, dregs, alundum (Al2O3) and calcium oxide are main chemical compositions, through chemistry with
The exciting method that physics is combined, strengthens the high intensity of wall bulk, will not generally under environment present in fixed sludge, waste residue
The metallic compound diffused out, radgas is not produced, while eliminate the pathogen in sludge, waste residue, dregs, virus, stench
Gas and organic humus, make up to four innoxious, minimizing, stabilisation, recycling standards；
2. the present invention is met using the non-autoclaved and unburned wall bulk of sludge compacting《People's Republic of China's solid waste pollution environment
Anti- therapy》Article 3, Article 4, the Policy Conditions of Article 5 and State Environmental Protection Administration are on issue《Hazardous Wastes Management is prevented and treated
Technical policy》Notice spirit.Meet State Council on《Novel wall reform policy》Adhere to that new wall material should " with saving native, province,
The principle of sharp useless, environmental protection ", caters to State Council, all departments and local people's governments on environmental protection, wall reform, building
The every policy and regulation of energy-conservation；
3. the present invention eliminates harm of the solid waste to ecological environment, the health of people is protected, solid waste is comprehensively utilized, become useless
For treasured, inexhaustible resource is provided for building manufacturing industry, is benefited the nation and the people, while saved waste solid waste and filled out
Bury, accumulate land used, protect farmland；
4. sludge of the invention, waste residue, dregs substitute clay-brickmaking, product quality technical indicator meets GB179-1999 standards,
Product has the premium properties such as lightweight, high-strength, insulation, sound insulation, and the wall bulk of manufacture has standard brick, hollow brick, multicolour
Decorative block, kerbstone, retaining wall block, grass-planting brick, the product such as bank protection stone, wide in variety, specification is complete, can be widely applied to hold
Weight, non-lbearing wall material, square, road, reclaim fields from the sea and water conservancy construction etc..
Embodiment
The present invention program is described further below by embodiment：
Embodiment 1：
A kind of method that sewage treatment plant's dewatered sludge suppresses non-autoclaved and unburned wall bulk, including sludge dewatering are dried and are modified, are mixed
Rolling, compound digestion are closed, digests and expects that mixing repeats rolling, shaped by fluid pressure, the maintenance of product blank, specifically includes following steps：
1）Sludge dewatering, which is dried, to be modified：It will be dehydrated using municipal sewage plant's dewatered sludge to moisture content 78%, in automatic gauge
Under the control of device, 92.25 parts of dewatered sludge, 6 parts of seashell powder, 1.5 parts of ferrous sulfate, calcium hydroxide 0.25 are taken by weight
Part, it is pumped to using sludge pump, powder in screw-type mud drier, is well mixed, then dehydrates, make the dehydration of sludge
Rate reaches more than 90%, produces modified sewage sludge；
2）Mix rolling：Under the control of autmatic measuring device, 35 parts of modified sewage sludge, 7 parts of seashell powder, calcium sulfate are taken by weight
2.1 parts, 6 parts of silicon ash, 13.26 parts of slag, 17.64 parts of silicon manganese slag, ground engineering soil 14 parts, 5 parts of F14 liquid exciting agent, water 8
Part, mixing grinding 5min in XLH-800 type planet-style wheel roller mixers is added to using ribbon conveyer, powder body pump, produced mixed
Close material；
3）Compound digests：Compound is inputted to successive slaking silo with ribbon conveyer, digested at being 55 DEG C in temperature
3h, produce digestion material；
4）Digestion material mixing repeats rolling：Under the control of autmatic measuring device, take parts by weight to digest and expect 83.74 parts, consolidating agent
12.26 parts, 4 parts of YW types surfactant, inputted using ribbon conveyer and pump type conveyer to XLH-800 type planet-style wheel rollers
Mixer, mixing repeat grinding 4min, and the moisture content for adjusting digestion material with hot water produces base material, input reservoir tank is standby to 15%
With above-mentioned YW types fluorine class surfactant is liquid aqueous solution；
5）Shaped by fluid pressure：Stamping system by base material from reservoir tank quantification input hydraulic pressure forming machine, in the case where pressure is 20MPa
Strike out the standard brick blank of 240 × 115 × 53mm specifications；
6）Product blank is supported：After product blank enters reative cell, indoor temperature is 23.5 DEG C, natural precuring 48h, is entered after precuring
Hot-air circular response conserves, and temperature slowly rises, and temperature is risen to 100 DEG C in 3h, after constant temperature 3h slow cooling to 50 DEG C,
Wall bulk is produced, finished product storage, its performance test is as shown in table 4, and the wall bulk meets《GB/T21144-2007 concrete
Solid brick》Performance requirement.
Table 4：The performance test of the wall bulk of embodiment 1
The particle diameter fineness of seashell powder is 150-200 mesh in above-mentioned steps 1 and step 2, CaCO in seashell powder3Component content is
95-98%, the particle diameter fineness of silicon ash is 100-400 mesh in step 2, particle diameter≤3mm of slag charge in step 2.
Embodiment 2：
A kind of method that sewage treatment plant's dewatered sludge suppresses non-autoclaved and unburned wall bulk, including sludge dewatering are dried and are modified, are mixed
Rolling, compound digestion are closed, digests and expects that mixing repeats rolling, shaped by fluid pressure, the maintenance of product blank, specifically includes following steps：
1）Sludge dewatering, which is dried, to be modified：It will be dehydrated using municipal sewage plant's dewatered sludge to moisture content 78%, in automatic gauge
Under the control of device, 92.25 parts of dewatered sludge, 6 parts of seashell powder, 1.5 parts of ferrous sulfate, calcium hydroxide 0.25 are taken by weight
Part, it is pumped to using sludge pump, powder in screw-type mud drier, is well mixed, then dehydrates, make the dehydration of sludge
Rate reaches more than 90%, produces modified sewage sludge；
2）Mix rolling：Under the control of autmatic measuring device, 37 parts of modified sewage sludge, 8 parts of seashell powder, calcium sulfate are taken by weight
2.3 parts, 6.5 parts of silicon ash, 14.76 parts of slag, 25.44 parts of ferroalloy slag, 6 parts of F14 liquid exciting agent, 8 parts of water, it is defeated using belt
Send machine, powder body pump to be added to mixing grinding 5min in XLH-800 types planet-style wheel roller mixer, produce compound；
3）Compound digests：Compound is inputted to successive slaking silo with ribbon conveyer, digested at being 55 DEG C in temperature
3h, produce digestion material；
4）Digestion material mixing repeats rolling：Under the control of autmatic measuring device, take parts by weight to digest and expect 83.74 parts, consolidating agent
12.26 parts, 4 parts of YW types surfactant, inputted using ribbon conveyer and pump type conveyer to XLH-800 type planet-style wheel rollers
Mixer, mixing repeat grinding 4min, and the moisture content for adjusting digestion material with hot water produces base material, input reservoir tank is standby to 15%
With above-mentioned YW types fluorine class surfactant is liquid aqueous solution；
5）Shaped by fluid pressure：Stamping system by base material from reservoir tank quantification input hydraulic pressure forming machine, in the case where pressure is 20MPa
Strike out the standard brick blank of 240 × 115 × 53mm specifications；
6）Product blank is supported：After product blank enters reative cell, indoor temperature is 23.5 DEG C, natural precuring 48h, is entered after precuring
Hot-air circular response conserves, and temperature slowly rises, and temperature is risen to 100 DEG C in 3h, after constant temperature 3h slow cooling to 50 DEG C,
Wall bulk is produced, finished product storage, its performance test is as shown in table 5, and the wall bulk meets《GB/T21144-2007 concrete
Solid brick》Performance requirement.
Table 5：The performance test of the wall bulk of embodiment 2
The particle diameter fineness of seashell powder is 150-200 mesh in above-mentioned steps 1 and step 2, CaCO in seashell powder3Component content is
95-98%, the particle diameter fineness of silicon ash is 100-400 mesh in step 2, particle diameter≤3mm of slag charge in step 2.
Embodiment 3：
A kind of method that sewage treatment plant's dewatered sludge suppresses non-autoclaved and unburned wall bulk, including sludge dewatering are dried and are modified, are mixed
Rolling, compound digestion are closed, digests and expects that mixing repeats rolling, shaped by fluid pressure, the maintenance of product blank, specifically includes following steps：
1）Sludge dewatering, which is dried, to be modified：It will be dehydrated using municipal sewage plant's dewatered sludge to moisture content 78%, in automatic gauge
Under the control of device, 92.25 parts of dewatered sludge, 6 parts of seashell powder, 1.5 parts of ferrous sulfate, calcium hydroxide 0.25 are taken by weight
Part, it is pumped to using sludge pump, powder in screw-type mud drier, is well mixed, then dehydrates, make the dehydration of sludge
Rate reaches more than 90%, produces modified sewage sludge；
2）Mix rolling：Under the control of autmatic measuring device, 39 parts of modified sewage sludge, 8.5 parts of seashell powder, sulfuric acid are taken by weight
2.4 parts of calcium, 6.7 parts of silicon ash, 14 parts of slag, 22.9 parts of clinker, 6.5 parts of F14 liquid exciting agent, 8 parts of water, using belt conveying
Machine, powder body pump are added to mixing grinding 5min in XLH-800 types planet-style wheel roller mixer, produce compound；
3）Compound digests：Compound is inputted to successive slaking silo with ribbon conveyer, digested at being 55 DEG C in temperature
3h, produce digestion material；
4）Digestion material mixing repeats rolling：Under the control of autmatic measuring device, take parts by weight to digest and expect 83.74 parts, consolidating agent
12.26 parts, 4 parts of YW types surfactant, inputted using ribbon conveyer and pump type conveyer to XLH-800 type planet-style wheel rollers
Mixer, mixing repeat grinding 4min, and the moisture content for adjusting digestion material with hot water produces base material, input reservoir tank is standby to 15%
With above-mentioned YW types fluorine class surfactant is liquid aqueous solution；
5）Shaped by fluid pressure：Stamping system by base material from reservoir tank quantification input hydraulic pressure forming machine, in the case where pressure is 20MPa
Strike out the standard brick blank of 240 × 115 × 53mm specifications；
6）Product blank is supported：After product blank enters reative cell, indoor temperature is 8 DEG C, hot-air is passed through, first at 48 DEG C of temperature
Precuring 8h is incubated, hot-air circular response is entered after precuring and is conserved, temperature slowly rises, and temperature is risen to 100 DEG C in 3h, perseverance
Slow cooling produces wall bulk, finished product storage, its performance test is as shown in table 6, and the wall bulk meets to 50 DEG C after warm 3h
《GB/T21144-2007 solid concrete bricks》Performance requirement.
Table 6：The performance test of the wall bulk of embodiment 3
The particle diameter fineness of seashell powder is 150-200 mesh in above-mentioned steps 1 and step 2, CaCO in seashell powder3Component content is
95-98%, the particle diameter fineness of silicon ash is 100-400 mesh in step 2, particle diameter≤3mm of slag charge in step 2.
Embodiment 4：
A kind of method that sewage treatment plant's dewatered sludge suppresses non-autoclaved and unburned wall bulk, including sludge dewatering are dried and are modified, are mixed
Rolling, compound digestion are closed, digests and expects that mixing repeats rolling, shaped by fluid pressure, the maintenance of product blank, specifically includes following steps：
1）Sludge dewatering, which is dried, to be modified：It will be dehydrated using municipal sewage plant's dewatered sludge to moisture content 78%, in automatic gauge
Under the control of device, 92.25 parts of dewatered sludge, 6 parts of seashell powder, 1.5 parts of ferrous sulfate, calcium hydroxide 0.25 are taken by weight
Part, it is pumped to using sludge pump, powder in screw-type mud drier, is well mixed, then dehydrates, make the dehydration of sludge
Rate reaches more than 90%, produces modified sewage sludge；
2）Mix rolling：Under the control of autmatic measuring device, 35 parts of modified sewage sludge, 7 parts of seashell powder, calcium sulfate are taken by weight
2.1 parts, 6 parts of silicon ash, 13.26 parts of slag, 17.64 parts of silicon manganese slag, ground engineering soil 14 parts, 5 parts of F14 liquid exciting agent, water 8
Part, mixing grinding 5min in XLH-800 type planet-style wheel roller mixers is added to using ribbon conveyer, powder body pump, produced mixed
Close material；
3）Compound digests：Compound is inputted to successive slaking silo with ribbon conveyer, digested at being 55 DEG C in temperature
3h, produce digestion material；
4）Digestion material mixing repeats rolling：Under the control of autmatic measuring device, take parts by weight to digest and expect 83.74 parts, consolidating agent
12.26 parts, nucleus element 0.22 part, 0.17 part of hydantoins, 4 parts of YW types surfactant, it is defeated using ribbon conveyer and pump type
Send machine to input to XLH-800 type planet-style wheel roller mixers, mixing and repeat grinding 4min, the moisture content of digestion material is adjusted with hot water
To 15%, base material is produced, input reservoir tank is standby, and above-mentioned YW types fluorine class surfactant is liquid aqueous solution, nucleus element and second
Interior uride synergy, can promote the active component of consolidating agent to penetrate on the boundary of feed particles, and then improves particle and connect
Touch reinforced structure to be coupled, further enhancing the network structure of gelling, making one has the higher entirety of intensity, improves
The compression strength of wall bulk, while more reliable the consolidating of heavy metal ion, pathogen is contained in wall bulk；
5）Shaped by fluid pressure：Stamping system by base material from reservoir tank quantification input hydraulic pressure forming machine, in the case where pressure is 20MPa
Strike out the standard brick blank of 240 × 115 × 53mm specifications；
6）Product blank is supported：After product blank enters reative cell, indoor temperature is 23.5 DEG C, natural precuring 48h, is entered after precuring
Hot-air circular response conserves, and temperature slowly rises, and temperature is risen to 100 DEG C in 3h, after constant temperature 3h slow cooling to 50 DEG C,
Wall bulk is produced, finished product storage, its performance test is as shown in table 7, and the wall bulk meets《GB/T21144-2007 concrete
Solid brick》Performance requirement.
Table 7：The performance test of the wall bulk of embodiment 4
The particle diameter fineness of seashell powder is 150-200 mesh in above-mentioned steps 1 and step 2, CaCO in seashell powder3Component content is
95-98%, the particle diameter fineness of silicon ash is 100-400 mesh in step 2, particle diameter≤3mm of slag charge in step 2.
Routine operation in the operating procedure of the present invention is well known to those skilled in the art, herein without repeating.
Technical scheme is described in detail embodiment described above, it should be understood that it is described above only
For the specific embodiment of the present invention, it is not intended to limit the invention, all any modifications made in the spirit of the present invention,
Supplement or similar fashion replacement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of method that sewage treatment plant's dewatered sludge suppresses non-autoclaved and unburned wall bulk, including sludge dewatering drying modification,
Rolling, compound digestion are mixed, digests and expects that mixing repeats rolling, shaped by fluid pressure, the maintenance of product blank, it is characterised in that：It is described
Modification procedure is dried in sludge dewatering：Sludge of sewage treatment plant is dehydrated, takes dewatered sludge, seashell powder, ferrous sulfate, hydrogen-oxygen
Change calcium, be well mixed, then dehydrate, produce modified sewage sludge.
2. the method that a kind of sewage treatment plant's dewatered sludge according to claim 1 suppresses non-autoclaved and unburned wall bulk, its
It is characterised by：The moisture content that dewatered sludge in modification procedure is dried in the sludge dewatering is 75-85%, modified sewage sludge raw material
Composition and its parts by weight are：Dewatered sludge 90-96 parts, seashell powder 3-9 parts, ferrous sulfate 1-3 parts, calcium hydroxide 0-0.5 parts.
3. the method that a kind of sewage treatment plant's dewatered sludge according to claim 1 suppresses non-autoclaved and unburned wall bulk, its
It is characterised by：It is described mixing rolling step be：Modified sewage sludge 25-40 parts, seashell powder 4-8 parts, calcium sulfate 1-3 are taken by weight
Part, silicon ash 3-7 parts, slag charge 35-47 parts, F14 liquid exciting agent 4-7 parts, water 5-8 parts, grinding 2- is mixed in Wheel mill mixer
6min, produce compound.
4. the method that a kind of sewage treatment plant's dewatered sludge according to claim 1-3 suppresses non-autoclaved and unburned wall bulk,
It is characterized in that：The particle diameter fineness of seashell powder is 150-200 mesh in the mixing rolling step, CaCO in seashell powder3Into
Part content is 95-98%.
5. the method that a kind of sewage treatment plant's dewatered sludge according to claim 3 suppresses non-autoclaved and unburned wall bulk, its
It is characterised by：The particle diameter fineness of silicon ash is 100-400 mesh in the mixing rolling step.
6. the method that a kind of sewage treatment plant's dewatered sludge according to claim 3 suppresses non-autoclaved and unburned wall bulk, its
It is characterised by：Particle diameter≤3mm of slag charge in the mixing rolling step, the slag charge is industrial residue or engineering dregs, described
Industrial residue is the solid waste that gives off in industrial production, solid waste be slag or slag or red mud or silicon manganese slag or
Ferroalloy slag or flyash or clinker or natural gangue or chromium slag or granulated copper slag or lead skim or phosphorus slag or carbide slag or phosphorus stone
The artificial sand or building waste that cream or CHARACTERISTICS OF TAILINGS SAND or the useless molding sand of foundry industry or quartziferous barren rock or leftover bits and pieces crush crush slag, described
Engineering dregs are selected from underground engineering dregs or ground engineering dregs.
7. the method that a kind of sewage treatment plant's dewatered sludge according to claim 1 suppresses non-autoclaved and unburned wall bulk, its
It is characterised by：The compound digestion step is：Compound is inputted to slaking silos, digests 1- at being 40-70 DEG C in temperature
4h, produce digestion material.
8. the method that a kind of sewage treatment plant's dewatered sludge according to claim 1 suppresses non-autoclaved and unburned wall bulk, its
It is characterised by：The digestion material mixing repeats rolling step and is：Parts by weight are taken to digest material 82-94 parts, consolidating agent 5-15 parts, YW
Type surfactant 1-7 parts, mixing repeat grinding 2-6min, and the moisture content for adjusting digestion material with hot water produces system to 10-17%
Blank.
9. the method that a kind of sewage treatment plant's dewatered sludge according to claim 1 suppresses non-autoclaved and unburned wall bulk, its
It is characterised by：The shaped by fluid pressure step is：By the stamping system of base material input hydraulic pressure forming machine, product blank is made.
10. the method that a kind of sewage treatment plant's dewatered sludge according to claim 1 suppresses non-autoclaved and unburned wall bulk, its
It is characterised by：The product blank supports step：After product blank enters reative cell, nature precuring during more than 10 DEG C of indoor temperature
45-50h, when below 10 DEG C of indoor temperature, hot-air is passed through, precuring time 7-9h is incubated at 40-50 DEG C, heat is entered after precuring
Air circulation reaction conserves, and temperature is risen to 90-110 DEG C in 2-4h, slow cooling produces to 40-60 DEG C after constant temperature 2-4h
Wall bulk.
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