CN102060560A - Method for preparing haydite from wet sludge and incineration fly ash - Google Patents

Method for preparing haydite from wet sludge and incineration fly ash Download PDF

Info

Publication number
CN102060560A
CN102060560A CN2010105487398A CN201010548739A CN102060560A CN 102060560 A CN102060560 A CN 102060560A CN 2010105487398 A CN2010105487398 A CN 2010105487398A CN 201010548739 A CN201010548739 A CN 201010548739A CN 102060560 A CN102060560 A CN 102060560A
Authority
CN
China
Prior art keywords
sludge
blank
haydite
flying ash
temperature
Prior art date
Application number
CN2010105487398A
Other languages
Chinese (zh)
Inventor
高亮
张曙光
徐朝阳
郝永俊
韩檬
杨健
董楠
董珂
Original Assignee
天津泰达环保有限公司
天津渤海环保工程有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 天津泰达环保有限公司, 天津渤海环保工程有限公司 filed Critical 天津泰达环保有限公司
Priority to CN2010105487398A priority Critical patent/CN102060560A/en
Publication of CN102060560A publication Critical patent/CN102060560A/en

Links

Abstract

The invention discloses a method for preparing haydite from wet sludge and incineration fly ash, belonging to solid hazardous waste treatment and recycling technology. The method comprises the following steps: proportionally and uniformly mixing municipal sludge of which the water content is 75-85%, incineration fly ash and bentonite; carrying out extrusion forming on the mixture to obtain a haydite blank; drying the blank for a period of time; preheating the blank for a period of time; roasting the blank at high temperature for a period of time; and naturally cooling to room temperature to obtain the haydite product. In the invention, the wet sludge (municipal sludge of which the water content is 75-85%) and other raw materials are directly mixed, formed and granulated; and thus, the invention avoids the problem of sludge drying, and facilitates forming and granulation based on the viscosity of the wet sludge. The invention has the advantages of simple process, low investment, low operating cost, high demand for the haydite product and the like, thereby having wide development prospects and high popularization value.

Description

A kind of method of utilizing hygroscopic state sewage sludge and flying ash to prepare haydite

Technical field

The present invention relates to solid dangerous waste treatment and disposal and application technology as the second resource field, especially relate to a kind of method of utilizing hygroscopic state sewage sludge and flying ash to prepare haydite.

Background technology

Along with the rapid increase and the quickening of urbanization process of population, the quantity discharged of China's domestic waste generation and municipal wastewater grows with each passing day.According to statistics, China city resident produces per capita day the about 1.2kg of rubbish, and with the speed increase in every year 8%~10%, the domestic waste generation had reached 1.56 hundred million tons in 2005, expected 2010 and will reach 3.1 hundred million tons.Statistic data shows that China's quantity of wastewater effluent is by 432.9 hundred million tons of 536.8 hundred million tons of rising to 2006 of calendar year 2001, and annual growth reaches 4.39%, and wherein the municipal wastewater quantity discharged increases by 30.1%.

At present, the treatment and disposal technology of domestic waste is mainly based on sanitary landfill, compost and burning.Garbage incineration technology not only can reduce the volume of rubbish greatly, and the heat that produces can be used for generating or heat supply, and therefore burning has become the main mode that refuse treatment is disposed on the our times.Flying ash is meant the resistates of the flue gas purification system collection that rubbish, mud etc. burn.After measured, flying ash often contains lead (Pb), cadmium (Cd), the copper heavy metals such as (Cu) of higher leaching concentration, and the Dioxins of high density (PCDDs/PCDFs).The treatment and disposal method of flying dust mainly contains: cement solidification, bituminization, melting and solidification, chemical agent solidification and stabilization etc.These traditional methods all are that flying dust is handled as solid dangerous waste, not only do not realize the recycling of flying dust, and have significantly increased the volume of flying dust, have strengthened the difficulty of follow-up disposal.

Along with the pay attention to day by day of country to sewage treatment industry, wastewater treatment rate improves constantly, and sludge yield is also constantly soaring.According to statistics, national urban wastewater treatment firm produces about 1,800,000 tons/year of dewatered sludge (9,000,000 tons in moisture 80% mud).Contain pathogenic micro-organism, multiple organic and inorganic pollutant and heavy metal etc. in the mud, belong to Hazardous wastes.Main Sludge Disposal Techniques comprises sanitary landfill, agricultural utilization, burning etc. at present.The mud sanitary landfill is taken up an area of wide, length consuming time, and the easy polluted underground water of percolate, and landfill yard also can produce methane gas easily sets off an explosion and burns.The agricultural utilization of mud requires mud is carried out innoxious pre-treatment.Sludge incineration then needs high investment and running cost, and burns and easily cause heavy metal with flue dust diffuse pollution air.

Because there are many shortcomings in traditional flying ash and municipal sludge treatment and disposal technology, can not satisfy the requirement of environmental standard, so researcher making great efforts to seek better treatment and disposal technology.The patent of invention of highlighted ZL200610013336.7 number of Taida Environmental Protection Co., Ltd., Tianjin " utilizing incineration of refuse flyash to be haydite of raw material and preparation method thereof " is for the treatment and disposal and the recycling of flying ash provides new thinking.The patent of invention of the ZL200710121297.7 of the Jin Yiying of Tsing-Hua University number " method of sintering urban domestic sewage sludge haydite " is for novel method has been found in the processing of municipal sludge.Utilize the leca of traditional sinter process production at present since be subjected to the clay mineral price to influence its production cost higher, thereby limited the output of leca, also restricted the development of building trade.And be accompanied by the fast development of China's building trade, huge for high performance ceramic product demand.Therefore preparing haydite is a kind of treatment and disposal and the recycling mode that flying ash and municipal sludge have development prospect very much, and object is single but also there is disposal in the described method of above-mentioned patent, problems such as scope of application limitation.At present, the method for utilizing mud to prepare haydite mainly adopts sludge-drying as raw material, but the flow process complexity of sludge drying, investment working cost are high, have seriously limited popularizing and promoting of this method.

Summary of the invention

The invention discloses a kind of method of utilizing hygroscopic state sewage sludge and flying ash to prepare haydite, realized that effectively the synchronous processing of two kinds of Hazardous wastess is disposed and recycling.The present invention is achieved by the following technical programs:

(1) is that 75%~85% municipal sludge mixes with flying ash, wilkinite with water ratio, stirs;

(2) step (1) mixture after being mixed extrusion molding is obtained the haydite blank;

(3) with step (2) gained blank heating to bake out temperature and keep certain hour;

(4) with step (3) gained blank heating to preheating temperature and keep certain hour;

(5) with step (4) gained blank heating to maturing temperature and keep certain hour;

(6) step (5) products obtained therefrom is naturally cooled to room temperature, promptly get ceramic product.

Flying ash among the present invention is meant the resistates that gets in the collection of flue gas purification systems such as municipal solid waste incinerator, medical refuse burning factory, sludge incineration factory; Municipal sludge among the present invention is meant the dewatered sludge that city domestic sewage treatment plant, industrial sewage treatment plant etc. produce, and its water ratio is generally 75%~85%.

Therefore organic component content is higher in the municipal sludge, and the heat release of can burning under hot conditions improves municipal sludge shared ratio in mixture, can play the effect that reduces maturing temperature; CaO in the municipal sludge, MgO, K 2O, Na 2The fusing assistant content such as the content of composition and wilkinite of fluxing such as O are suitable, therefore improve municipal sludge shared ratio in mixture, can play the effect that reduces the fusing assistant usage quantity.But moisture percentage in sewage sludge is bigger for the influence of moulding, therefore must the control municipal sludge in mixture shared ratio.Municipal sludge, flying ash, bentonitic mass ratio are (30~50) among the present invention: (6~10): (1~4).

The too little meeting of blank forming pressure causes blank loose, and the ultimate compression strength of ceramic product can not satisfy the requirement of using as material of construction; The blank forming pressure is crossed conference and is caused the blank consolidation, the roasting time lengthening, and production cost increases.The pressure of extrusion molding is 5~7MPa among the present invention.

The drying process of blank can make moisture overflow, and prevents that blank from breaking because of moisture overflows in a large number at warm.The blank drying temperature is 100~110 ℃ among the present invention, time of drying 60~120min.

The warm of blank can make organic composition overflow internally, not only can prevent that blank from the high-temperature roasting stage explosion taking place, and a large amount of small pores of the inner formation of ceramic product, has the advantage of light skeletal building materials.The blank preheating temperature is 300~400 ℃ among the present invention, warm up time 20~40min.

The maturing temperature of blank is high more, and the roasting hold-time is long more, and the performance of ceramic product is good more, but must consider to produce the required cost problem of pyritous.The blank maturing temperature is 1050~1150 ℃ among the present invention, roasting time 10~30min.

Advantage and positively effect that the present invention has are: synchronous minimizing, harmless treatment disposal and the recycling of effectively having realized flying ash and two kinds of Hazardous wastess of municipal sludge; Adopt hygroscopic state sewage sludge (water ratio is 75%~85% municipal sludge) directly with other raw material mixing aftershaping granulations, not only avoided this difficult problem of sludge drying, utilize the viscosity of hygroscopic state sewage sludge to make things convenient for molding, granulating again; The preheating of blank has effectively prevented the explosion phenomenon of high-temperature roasting, has reduced fraction defective; Thoroughly killed the pathogenic micro-organism in the mud by high-temperature roasting, the Dioxins in the flying dust etc. is also decomposed fully; Heavy metal in flying dust and the mud is melted and is solidificated in the haydite, leaches concentration well below the relevant criterion requirement; The product of producing is the light-high-strength haydite, has the advantage of light skeletal building materials, and the building trade demand is big.

Embodiment

Embodiment 1

Flying ash in the present embodiment derives from Tianjin Dual dock garbage incinerating power plant flue gas purification system, and its main chemical compositions sees Table 1.

The main chemical compositions of table 1 Tianjin Dual dock garbage incinerating power plant flying ash

Chemical ingredients SiO 2 Al 2O 3 Fe 2O 3 CaO MgO K 2O Na 2O SO 3 Cl- Loss on ignition Content (%) 45.05 15.84 4.27 13.28 3.36 2.81 2.26 3.23 1.72 8.28

Municipal sludge in the present embodiment derives from the Tianjin Economic Technology Development Zone Sewage Disposal Facatory dewatered sludge, and water ratio is 79.6%, and its main chemical compositions sees Table 2.

The main chemical compositions of table 2 Tianjin Economic Technology Development Zone Sewage Disposal Facatory dewatered sludge

Chemical ingredients SiO 2 Al 2O 3 Fe 2O 3 CaO MgO K 2O Na 2O Loss on ignition Content (%) 24.37 7.95 6.09 10.68 10.69 2.46 3.21 43.28

The wilkinite that uses in the present embodiment is Powdered, and its main chemical compositions sees Table 3.

The bentonitic main chemical compositions of table 3

Chemical ingredients SiO 2 Al 2O 3 Fe 2O 3 CaO MgO K 2O Na 2O Loss on ignition Content (%) 71.78 13.92 0.75 1.91 3.43 0.18 0.24 5.43

Dewatered sludge, flying dust, wilkinite are mixed according to mass ratio at 50: 7: 3, use the extrusion molding of spiral tablets press then; Forming pressure 6.5MPa obtains the about 2cm of diameter, the cylinder of high about 1cm; Blank is through 105 ℃ of dryings after the moulding, time of drying 120min; ℃ preheating of the blank heating to 350 of drying, warm up time 30min; Through blank heating to the 1150 ℃ roasting of preheating, roasting time 25min; Be cooled to room temperature and promptly get ceramic product A.

The ceramic product that present embodiment obtains is leaden, and there is the glaze layer of one deck densification on its surface, and inside has a large amount of small pores, cylindrical compress strength 5.91MPa, apparent density 1.2g/cm 3, water-intake rate 12%, physicals meets " light-weight aggregate and test method thereof " (GB/T 17431-1998).Adopt " solid waste leaches toxicity leaching method sulfuric acid nitrate method " (HJ/T299-2007) to handle haydite sample, adopt atomic absorption spectrophotometry test heavy metal concentration to see Table 4 with " solid waste leaches the horizontal succusion of toxicity leaching method " (GB 5086.2-1997).

The heavy metal of table 4 ceramic product A leaches concentration

The heavy metal kind Cu Zn Pb Cd Cr Hg Leach concentration (mg/L) 0.29 1.26 0.7 0.53 0.142 Do not detect Leaching standard (mg/L) 100 100 5 15 1 0.1

Embodiment 2

Flying ash in the present embodiment derives from Tianjin Dual dock garbage incinerating power plant flue gas purification system, and its main chemical compositions sees Table 1.

Municipal sludge in the present embodiment derives from Jizhuangzi Waste Water Treatment Plant, Tianjin's dewatered sludge, and water ratio is 81.4%, and its main chemical compositions sees Table 5.

The main chemical compositions of table 5 Jizhuangzi Waste Water Treatment Plant, Tianjin dewatered sludge

Chemical ingredients SiO 2 Al 2O 3 Fe 2O 3 CaO MgO K 2O Na 2O Loss on ignition Content (%) 20.75 7.10 8.55 4.19 3.42 1.33 0.68 52.98

The wilkinite that uses in the present embodiment is Powdered, and its main chemical compositions sees Table 3.

Dewatered sludge, flying dust, wilkinite are mixed according to mass ratio at 15: 5: 2, use the extrusion molding of spiral tablets press then; Forming pressure 6.5MPa obtains the about 2cm of diameter, the cylinder of high about 1cm; Blank is through 105 ℃ of dryings after the moulding, time of drying 180min; ℃ preheating of the blank heating to 350 of drying, warm up time 30min; Through blank heating to the 1100 ℃ roasting of preheating, roasting time 25min; Be cooled to room temperature and promptly get ceramic product B.

The ceramic product that present embodiment obtains is leaden, and there is the glaze layer of one deck densification on its surface, and inside has a large amount of small pores, cylindrical compress strength 6.22MPa, apparent density 1.3g/cm 3, water-intake rate 10%, physicals meets " light-weight aggregate and test method thereof " (GB/T 17431-1998).Adopt " solid waste leaches toxicity leaching method sulfuric acid nitrate method " (HJ/T299-2007) to handle haydite sample, adopt atomic absorption spectrophotometry test heavy metal concentration to see Table 6 with " solid waste leaches the horizontal succusion of toxicity leaching method " (GB 5086.2-1997).

The heavy metal of table 6 ceramic product B leaches concentration

The heavy metal kind Cu Zn Pb Cd Cr Hg Leach concentration (mg/L) 0.13 0.87 0.1 0.28 0.045 Do not detect Leaching standard (mg/L) 100 100 5 15 1 0.1

The present invention utilizes hygroscopic state sewage sludge and flying ash to prepare haydite, has effectively realized synchronous minimizing, harmless treatment disposal and the recycling of two kinds of Hazardous wastess.Flow process of the present invention is simple, investment and working cost are low, and the ceramic product demand of production is big, has development prospect and promotional value preferably.

Although above the preferred embodiments of the present invention are described; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away under the scope situation that aim of the present invention and claim protect, can also make a lot of forms, these all belong within protection scope of the present invention.

Claims (8)

1. a method of utilizing hygroscopic state sewage sludge and flying ash to prepare haydite is characterized in that, carries out according to following step:
(1) is that 75%~85% municipal sludge mixes with flying ash, wilkinite with water ratio, stirs;
(2) step (1) mixture after being mixed extrusion molding is obtained the haydite blank;
(3) with step (2) gained blank heating to bake out temperature and keep certain hour;
(4) with step (3) gained blank heating to preheating temperature and keep certain hour;
(5) with step (4) gained blank heating to maturing temperature and keep certain hour;
(6) step (5) products obtained therefrom is naturally cooled to room temperature, promptly get ceramic product.
2. a kind of method of utilizing hygroscopic state sewage sludge and flying ash to prepare haydite according to claim 1, it is characterized in that, in the described step (1), municipal sludge is meant the dewatered sludge that city domestic sewage treatment plant, industrial sewage treatment plant etc. produce, and its water ratio is generally 75%~85%.
3. a kind of method of utilizing hygroscopic state sewage sludge and flying ash to prepare haydite according to claim 1, it is characterized in that, in the described step (1), flying ash is meant at flue gas purification systems such as municipal solid waste incinerator, medical refuse burning factory, sludge incineration factories collects the resistates that obtains.
4. a kind of method of utilizing hygroscopic state sewage sludge and flying ash to prepare haydite according to claim 1 is characterized in that, in the described step (1), municipal sludge, flying ash, bentonitic mass ratio are (15~20): (4~5): (1~2).
5. a kind of method of utilizing hygroscopic state sewage sludge and flying ash to prepare haydite according to claim 1 is characterized in that, in the described step (2), the pressure of extrusion molding is 5~7MPa.
6. a kind of method of utilizing hygroscopic state sewage sludge and flying ash to prepare haydite according to claim 1 is characterized in that, in the described step (3), the blank drying temperature is 100~110 ℃, time of drying 120~180min.
7. a kind of method of utilizing hygroscopic state sewage sludge and flying ash to prepare haydite according to claim 1 is characterized in that, in the described step (4), the blank preheating temperature is 300~400 ℃, warm up time 20~40min.
8. a kind of method of utilizing hygroscopic state sewage sludge and flying ash to prepare haydite according to claim 1 is characterized in that, in the described step (5), the blank maturing temperature is 1050~1150 ℃, roasting time 10~30min.
CN2010105487398A 2010-11-18 2010-11-18 Method for preparing haydite from wet sludge and incineration fly ash CN102060560A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010105487398A CN102060560A (en) 2010-11-18 2010-11-18 Method for preparing haydite from wet sludge and incineration fly ash

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010105487398A CN102060560A (en) 2010-11-18 2010-11-18 Method for preparing haydite from wet sludge and incineration fly ash

Publications (1)

Publication Number Publication Date
CN102060560A true CN102060560A (en) 2011-05-18

Family

ID=43996086

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010105487398A CN102060560A (en) 2010-11-18 2010-11-18 Method for preparing haydite from wet sludge and incineration fly ash

Country Status (1)

Country Link
CN (1) CN102060560A (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102249730A (en) * 2011-06-03 2011-11-23 南京工业大学 Method for preparing haydite from sludge incineration ash in chemical industry
CN102351559A (en) * 2011-08-22 2012-02-15 中山建华墙体材料有限公司 Haydite and preparation method thereof
CN105562423A (en) * 2016-01-04 2016-05-11 中国科学院武汉岩土力学研究所 Melting treatment method for waste incineration flying ash
CN105601315A (en) * 2016-03-16 2016-05-25 河北建筑工程学院 Light aggregate and preparation method thereof
CN106082963A (en) * 2016-06-13 2016-11-09 曹树梁 Leather-making mud ceramic aggregate and manufacture method thereof
CN106083130A (en) * 2016-06-13 2016-11-09 曹树梁 Copper fumes slag ceramic aggregate and manufacture method thereof
CN106082966A (en) * 2016-06-13 2016-11-09 曹树梁 Electroplating sludge ceramic aggregate and manufacture method thereof
CN106082978A (en) * 2016-06-13 2016-11-09 曹树梁 Nickel metallurgy waste slag ceramics aggregate and manufacture method thereof
CN106082964A (en) * 2016-06-13 2016-11-09 曹树梁 Hydrargyrum mine tailing ceramic aggregate and manufacture method thereof
CN106892617A (en) * 2017-01-24 2017-06-27 内蒙古科韵环保材料股份公司 A kind of environmentally friendly seepage brick and its manufacture method
CN107235709A (en) * 2017-06-21 2017-10-10 上海大学 A kind of method that incineration of refuse flyash is granulated with sludge mixing low temp
CN107721455A (en) * 2017-10-13 2018-02-23 天津天盈新型建材有限公司 A kind of haydite, its preparation method and application prepared by solid waste
CN108687106A (en) * 2018-05-02 2018-10-23 中国恩菲工程技术有限公司 The cooperative processing method of flying dust and sludge
CN108726989A (en) * 2017-04-25 2018-11-02 宝山钢铁股份有限公司 The cooperative processing method of waterworks sludge, flying ash and heavy metal sewage sludge
CN109336636A (en) * 2018-11-21 2019-02-15 浙江大东吴集团建设有限公司 Using sludge and its combustion by-products as the haydite of raw material

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102249730B (en) * 2011-06-03 2013-04-10 南京工业大学 Method for preparing haydite from sludge incineration ash in chemical industry
CN102249730A (en) * 2011-06-03 2011-11-23 南京工业大学 Method for preparing haydite from sludge incineration ash in chemical industry
CN102351559A (en) * 2011-08-22 2012-02-15 中山建华墙体材料有限公司 Haydite and preparation method thereof
CN105562423B (en) * 2016-01-04 2018-03-13 中国科学院武汉岩土力学研究所 A kind of incineration of refuse flyash melting process for the treatment of
CN105562423A (en) * 2016-01-04 2016-05-11 中国科学院武汉岩土力学研究所 Melting treatment method for waste incineration flying ash
CN105601315A (en) * 2016-03-16 2016-05-25 河北建筑工程学院 Light aggregate and preparation method thereof
CN105601315B (en) * 2016-03-16 2018-12-28 河北建筑工程学院 A kind of lightweight aggregate and preparation method thereof
CN106082963A (en) * 2016-06-13 2016-11-09 曹树梁 Leather-making mud ceramic aggregate and manufacture method thereof
CN106083130A (en) * 2016-06-13 2016-11-09 曹树梁 Copper fumes slag ceramic aggregate and manufacture method thereof
CN106082966A (en) * 2016-06-13 2016-11-09 曹树梁 Electroplating sludge ceramic aggregate and manufacture method thereof
CN106082978A (en) * 2016-06-13 2016-11-09 曹树梁 Nickel metallurgy waste slag ceramics aggregate and manufacture method thereof
CN106082964A (en) * 2016-06-13 2016-11-09 曹树梁 Hydrargyrum mine tailing ceramic aggregate and manufacture method thereof
CN106892617A (en) * 2017-01-24 2017-06-27 内蒙古科韵环保材料股份公司 A kind of environmentally friendly seepage brick and its manufacture method
CN108726989A (en) * 2017-04-25 2018-11-02 宝山钢铁股份有限公司 The cooperative processing method of waterworks sludge, flying ash and heavy metal sewage sludge
CN107235709A (en) * 2017-06-21 2017-10-10 上海大学 A kind of method that incineration of refuse flyash is granulated with sludge mixing low temp
CN107721455A (en) * 2017-10-13 2018-02-23 天津天盈新型建材有限公司 A kind of haydite, its preparation method and application prepared by solid waste
CN108687106A (en) * 2018-05-02 2018-10-23 中国恩菲工程技术有限公司 The cooperative processing method of flying dust and sludge
CN109336636A (en) * 2018-11-21 2019-02-15 浙江大东吴集团建设有限公司 Using sludge and its combustion by-products as the haydite of raw material

Similar Documents

Publication Publication Date Title
Świerczek et al. The potential of raw sewage sludge in construction industry–a review
Chiou et al. Lightweight aggregate made from sewage sludge and incinerated ash
CN102617107B (en) Building silt soil non-sintered ceramic aggregate and preparation method thereof
Zabaniotou et al. Green energy at cement kiln in Cyprus—Use of sewage sludge as a conventional fuel substitute
CN103172347B (en) Sintered porous light-weight insulating brick produced from ceramic waste mud and manufacturing method thereof
CN100371287C (en) Ceramicite using ash from incineration of refuse as raw material and its prodn. method
CN105712733B (en) Porous biological ceramsite prepared from waste incineration fly ash and biomass pyrolysis gasification residues and preparation method thereof
CN101486550B (en) Domestic garbage prefabricated part and method of manufacturing the same
CN101475361B (en) Preparation of clay haydite
Liu et al. Production of lightweight ceramisite from iron ore tailings and its performance investigation in a biological aerated filter (BAF) reactor
CN103145442B (en) Method for preparing non-sintered ceramisites by using chemical sludge
CN100336758C (en) Method for preparing ecological concrete using burning fly ash as admixture
KR100562169B1 (en) Manufacturing method of lightweight aggregate using ash from municipal and industrial solid waste incinerators
CN100528768C (en) Industrial residue based compound dephosphorization material
CN103132483B (en) Light brick capable of purifying water quality
CN101823825B (en) Sludge dehydrating and drying process method and device
CN102515834B (en) Preparation method of waterworks sludge ceramsites for pretreating micro-polluted water
CN102173850B (en) Energy-saving consumption-reducing technique for preparing haydite by co-disposing polluted soil and desilting sediment
CN101503643B (en) Solid fuel for sludge anhydration
CN102875003B (en) Integrated technology of thermal decomposing, dry distilling and gasifying sludge and preparing of ceramsite
CN103613362B (en) Light brick and preparation method thereof
CN101875555B (en) Energy-saving sintering heat-reserving brick
JP5658270B2 (en) Manufacturing method of lightweight construction materials using sludge waste
CN100584794C (en) Method for producing porcelain granule light weight aggregate with sewage sludge
CN101565297B (en) Sludge steel slag ultra light ceramsite and method for preparing same

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20110518