CN102464443A - Method for turning sludge into building material with conditioner - Google Patents
Method for turning sludge into building material with conditioner Download PDFInfo
- Publication number
- CN102464443A CN102464443A CN2010105306509A CN201010530650A CN102464443A CN 102464443 A CN102464443 A CN 102464443A CN 2010105306509 A CN2010105306509 A CN 2010105306509A CN 201010530650 A CN201010530650 A CN 201010530650A CN 102464443 A CN102464443 A CN 102464443A
- Authority
- CN
- China
- Prior art keywords
- conditioner
- parts
- sludge
- dehydration
- molecular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention relates to a method for turning sludge into a building material with a conditioner. The method is characterized in that employment of the conditioner in a sludge conditioning and dehydration process can improve dehydration performance and adjust sludge components to be in line with the proportion of raw materials of a building material. The conditioner has a composite weight of: 80-95 parts of an inorganic high-molecular dehydration conditioner (comprising 75-85parts of a ferric salt and 5-10 parts of an aluminum salt), 0.5-5 parts of an organic high-molecular dehydration conditioner, 5-10 parts of lime powder (in terms of CaO), and 3-5 parts of another coagulant aid. The method of the invention integrates respective advantages of the inorganic high-molecular conditioner and the organic high-molecular conditioner, crushes and mixes them in certain proportion under certain temperature and humidity conditions, and produces a novel conditioner with excellent performance. The conditioner can be applied in pretreatment for turning sludge into a building material, so that adsorption and bridging abilities can be increased, sludge dehydration pretreatment can has a better effect and a faster rate, reagent consumption can be lowered, treatment cost can be reduced, and water content of treated sludge can be lower.
Description
Technical field
The present invention relates to the method that a kind of amendment carries out sludge building materialization, be applied to the utilization of sludge of sewage treatment plant building materials.
Background technology
Along with the urbanization process of China is accelerated, industrial developing rapidly, the increase of urban population, the quantity discharged of urban industry waste water and sewage is increasing, and treatment rate of domestic sewage also improves year by year, and the sludge yield of municipal sewage plant also sharply increases.According to statistics; The thousands of altogether seats of the town sewage treatment facility that puts into operation in the existing whole nation; The annual mud (dry weight) that produces is more than 1,000 ten thousand tons, and annual growth is nearly 10%, and the treatment and disposal expense of sewage sludge is higher; In whole construction costs of wastewater treatment in China factory, what be used to handle mud accounts for 20%～50%.The composition of sewage sludge is very complicated, and the aggregate that zoogloea that it is formed by multiple mikrobe and adsorbed organic matter thereof and inorganics are formed except that containing a large amount of moisture, also contains a large amount of useful resources.Mud generally is plastic state, and water ratio is very high, about about 80%.Solids component mainly comprises the organism that produces from some inorganicss in the sewage and the treating processes, and organism can reach more than 50% of solid amount, can produce the heat greater than 10000kJ/kg during roasting, and this is equivalent to the thermal value of 0.5kg standard coal equivalent; Inanimate matter in the mud mainly is a silicate clay mineral, is similar to clay component.China to the demand of building materials suddenly increase, also more and more difficult of clay brick raw material sources.
Have multiplely at present for the municipal sludge treatment process, landfill, burning and comprehensive utilization are generally arranged.The landfill method of disposal is simple, be prone to row, cost is low, and mud does not need again highly to dewater, and flexibility is strong.Landfill yard is generally depleted pit or natural bottom land.But also there are some problems in the mud landfill, refers to the formation of loading embeading percolation liquid and gas especially.Percolate is a kind of by the liquid of severe contamination, if landfill yard addressing or move improperly, this liquid will get into Water table, the polluted underground water environment, thus influence people's health.The gas that landfill yard produces mainly is methane, if do not take appropriate measures and can set off an explosion and burn.Chinese patent CN 200710137836 relates to the method for producing baking-free brick without odour and three-waste by using sewage plant sludge; It discloses a kind of with sewage plant sludge odorless, the non-burning brick method of three-waste free discharge manufacturing; Raw material is active sludge, cement, middle fine sand, microlith, adds reodorant, hardening accelerator, accelerating chemicals and exciting agent again, makes fragment of brick for building with unburned technology.Although this method can be cured processing to mud, exist and can not eliminate fully, and the adding medicament to be too many hazardous and noxious substances and pathogenic micro-organism, processing cost is high.
Existing research to sludge conditioning mainly concentrates in the exploitation of amendment, especially to the exploitation of organic polymer conditioning thorn, aspect the influence of sludge building material utilization, then lacks research in inorganic conditioner.For the sludge building material metallization processes, require on the one hand moisture percentage in sewage sludge to reduce as far as possible, require the composition of dewatered sludge to meet the ratio of building materials raw material on the other hand.This just requires mud in the conditioning dehydration, to adopt the chemical amendment that dewatering is good, can adjust sludge components, inorganicization of raising mud degree.
Summary of the invention
The present invention relates to the method that a kind of amendment carries out sludge building materialization, it is characterized in that mud adopts this kind amendment dewatering is improved, can adjust the ratio that sludge components meets the building materials raw material in the conditioning dehydration.Increased the adsorption bridging ability, made the sludge dewatering pretreating effect good, speed is faster, dosing still less, processing cost reduces, and makes the moisture percentage in sewage sludge after the processing lower.
The present invention combines the advantage separately of inorganic polymer amendment and organic polymer amendment, under certain temperature and humidity condition, pulverizes mixing according to certain ratio, produces the novel amendment of excellent property, is applied to the sludge building material pre-treatment.Compare with the organic polymer amendment, add the low-molecular inorganic amendment and also can make mud reach comparatively ideal dehydrating effect, all there are best feed rate in molysite and aluminium salt when conditioning mud, and the best feed rate of molysite is littler than aluminium salt.
Its compound weight is counted:
80～95 parts of inorganic polymer dehydrating and conditioning agent, (wherein molysite accounts for 75～85 parts, 5～10 parts of aluminium salt)
0.5～5 part of organic polymer dehydrating and conditioning agent
5～10 parts of lime powders (CaO meter)
3～5 parts of other coagulant aidss
Novel amendment according to aforementioned proportion production carry out sludge building materialization, has following characteristics:
1, rational Application low-molecular inorganic amendment can reach the requirement of sludge treatment technique, can reduce the water ratio and the resistivity thereof of mud mud cake effectively, improves the dewatering efficiency of mud, more helps the subsequent disposal and the building materials utilization of mud.
2, compare with used organic polymer amendment, the low-molecular inorganic amendment also can reach close conditioning effect, because the conditioning process mechanism is different, more helps reducing the mud resistivity, thereby improves the dewatering efficiency of mud.
3, for the mud of building materials utilization, the Financial cost of low-molecular inorganic amendment is lower, can on the basis that reaches the dewatering process requirement, suitably reduce the organic content of mud, regulates sludge components, makes it more to meet the requirement of building materialsization.
4, have complementarity, brought into play the big and neutralising capacity of inorganic conditioner flco intensity after compound, and brought into play organic amendment adsorption bridging ability, dosage reduces, and cost reduces.
5, since with mud as the building materials raw material, adobe is through high-temperature firing, can eliminate in the mud pathogenic micro-organism etc.
Embodiment
Below in conjunction with specific embodiment the present invention is further specified.
Embodiment 1:
Its compound weight is counted:
Inorganic polymer dehydrating and conditioning agent iron(ic)chloride (FeCl
3) 85 parts
3 parts of organic polymer dehydrating and conditioning agent SEPIGEL 305s (PAM)
7 parts of lime powders (CaO meter)
5 parts in zeyssatite
According to the amendment that above proportioning is produced, along with the increase of throwing amount, moisture content of the cake continues to be reduced to about 78% by 93%, and visible adding in a large number contains inorganic salt and can continue the reduction moisture content of the cake.
Embodiment 2:
FeCl
3The throwing amount is when 1.75g/L, and the moisture content of the cake after mud is centrifugal has reached Schwellenwert, and aluminium salt throwing amount moisture content of the cake when 2.5g/L also can reach lower level, and the organic polymer amendment just can reach best dehydration conditions when the throwing amount is merely 0.05g/L.The dosage that can find out molysite is littler than aluminium salt, and molysite adds quantitative change and can influence treatment effect when big, therefore has complementarity.
Claims (2)
1. the present invention relates to the method that a kind of amendment carries out sludge building materialization, its compound weight is counted:
80～95 parts of inorganic polymer dehydrating and conditioning agent, (wherein molysite accounts for 75～85 parts, 5～10 parts of aluminium salt),
0.5～5 part of organic polymer dehydrating and conditioning agent,
5～10 parts of lime powders (CaO meter),
3～5 parts of other coagulant aidss.
2. a kind of amendment according to claim 1, its optimum weight is counted:
Inorganic polymer dehydrating and conditioning agent iron(ic)chloride (FeCl
3) 85 parts
3 parts of organic polymer dehydrating and conditioning agent SEPIGEL 305s (PAM)
7 parts of lime powders (CaO meter)
5 parts in zeyssatite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105306509A CN102464443A (en) | 2010-11-03 | 2010-11-03 | Method for turning sludge into building material with conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105306509A CN102464443A (en) | 2010-11-03 | 2010-11-03 | Method for turning sludge into building material with conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102464443A true CN102464443A (en) | 2012-05-23 |
Family
ID=46068610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105306509A Pending CN102464443A (en) | 2010-11-03 | 2010-11-03 | Method for turning sludge into building material with conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102464443A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106746482A (en) * | 2017-01-19 | 2017-05-31 | 安徽省通源环境节能股份有限公司 | The compound conditioner of sludge dewatering and mud dewatering method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1621371A (en) * | 2003-11-24 | 2005-06-01 | 曾智勇 | Highly effective amendment for sludge dehydration |
-
2010
- 2010-11-03 CN CN2010105306509A patent/CN102464443A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1621371A (en) * | 2003-11-24 | 2005-06-01 | 曾智勇 | Highly effective amendment for sludge dehydration |
Non-Patent Citations (1)
| Title |
|---|
| 郭智倩,0: "改性硅藻土调理剩余污泥沉降性能", 《辽宁化工》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106746482A (en) * | 2017-01-19 | 2017-05-31 | 安徽省通源环境节能股份有限公司 | The compound conditioner of sludge dewatering and mud dewatering method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101823825B (en) | Sludge dehydrating and drying process method and device | |
| CN104310960B (en) | A kind of haydite utilizing building waste and cullet to prepare and preparation method thereof | |
| CN101148346A (en) | Method for preparing haydite from urban sewage plant sludge | |
| CN104261652B (en) | High-effective sludge dehydration flocculation agent | |
| CN101823768B (en) | Method for preparing flocculant, fertilizer and methane with algae-containing sludge | |
| CN102161562B (en) | Process for treating excess sludge by utilizing fly ash | |
| CN107721375A (en) | A kind of method that sewage treatment plant's dewatered sludge suppresses non-autoclaved and unburned wall bulk | |
| CN102070352A (en) | Method for recycling dewatered sludge, channel sediment and fly ash | |
| CN101624293A (en) | Method for making ceramsites by utilizing slush and urban garbage | |
| CN101381212B (en) | Sludge building material and preparation method thereof | |
| CN102329147B (en) | Lightweight porcelain granule manufactured by utilizing printing and dyeing sludge and manufacturing method thereof | |
| CN100528778C (en) | Simple and low energy consumption method for making brick from sludge | |
| CN110871050A (en) | Application of lanthanum modified ecological filler adsorbent and preparation method thereof | |
| CN101623619A (en) | Foaming-type industrial waste residue base compound dephosphorization material | |
| CN104311128B (en) | A kind of porous adsorptive type haydite and preparation method thereof | |
| CN102173557B (en) | Method for treating low-heating value excess sludge | |
| CN101265009B (en) | Clean energy-saving sludge drying method for reclaiming and utilizing tail gas residual heat | |
| CN107129270A (en) | A kind of method for mixing cinder and firing ceramsite by using sludge | |
| CN105236707A (en) | Sewage treatment plant waste mud immobilization agent, and preparation method and application thereof | |
| CN103936256B (en) | A kind of method of mud and mud mixing mummification under normal temperature | |
| CN103936241B (en) | A kind of recycling sludge of sewage plant treatment process | |
| Gong et al. | Phosphorus removal from sewage by flocculated foamed lightweight aggregate: Performance optimisation, adsorption kinetics and mechanisms | |
| CN103663920B (en) | A kind of molysite sludge dehydrating agent and mud dewatering method | |
| CN105967752B (en) | Utilize the method for municipal sludge and carbide slag preparation low pollution plate | |
| CN107381990A (en) | A kind of method of sludge curing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120523 |