CN101774684A - Filter material for water treatment and preparation method and application thereof - Google Patents

Filter material for water treatment and preparation method and application thereof Download PDF

Info

Publication number
CN101774684A
CN101774684A CN201010130887A CN201010130887A CN101774684A CN 101774684 A CN101774684 A CN 101774684A CN 201010130887 A CN201010130887 A CN 201010130887A CN 201010130887 A CN201010130887 A CN 201010130887A CN 101774684 A CN101774684 A CN 101774684A
Authority
CN
China
Prior art keywords
filter
filtrate
parts
water
water treatment
Prior art date
Application number
CN201010130887A
Other languages
Chinese (zh)
Other versions
CN101774684B (en
Inventor
刘晓勤
王灿运
孙林兵
刘定华
马正飞
Original Assignee
南京工业大学
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 南京工业大学 filed Critical 南京工业大学
Priority to CN2010101308878A priority Critical patent/CN101774684B/en
Publication of CN101774684A publication Critical patent/CN101774684A/en
Application granted granted Critical
Publication of CN101774684B publication Critical patent/CN101774684B/en

Links

Classifications

    • Y02W10/15

Abstract

The invention belongs to the field of environmental protection, and discloses a filter material for water treatment and a preparation method and application thereof. The filter material mainly adopts the following raw materials in parts by weight: 60-80 parts of fly ash, 0-20 part(s) of expanded perlite, 5-15 parts of binder and 5-50 parts of pore forming agent. The preparation method of the filter material mainly comprises mixing the raw materials, granulation, high-temperature shock heating of wet material balls to generate water vapor so that the material balls can expand to form pores, formation, high-temperature sintering and curing, and mechanical agitation for increase of holes on the surface. The filter material can be used for biological water treatment, and can be particularly used as a filter material for the biological aerated filter.

Description

A kind of filter material for water treatment and its production and application

Technical field

The invention belongs to the environmental protection field, relate to a kind of filter material for water treatment, be mainly used in Industrial Wastewater Treatment and aspect, urban sewage purification, in the biomembrance process water treatment procedure, as the filtrate in the BAF.

Background technology

China's water is seriously polluted, and water quality degenerates, and the Sustainable development of directly influence economy and people's is healthy, and especially organic pollutant has quickened the growth and breeding of algae substances in the water body, and water body is worsened fast.Biological water technology is applicable to Industrial Wastewater Treatment and urban sewage purification, is particularly useful for handling organic waste water.It is the sewage treatment process that rises at the end of the eighties and the beginning of the nineties that BAF (BAF) is disposed of sewage, widely popular America and Europe and Japan.In recent years, China has also launched research to BAF technology.As biomembranous carrier, filtrate is the core integral part of BAF, influences the operation control and the treatment effect of this technology.Therefore, filtrate is significant for applying of biological aerated filter process.

Advantage such as ceramic grain filter has light weight porous, surface irregularity, specific surface area is big, bio-film colonization is easy, intensity is high, anti-flushing, filtering velocity height, loss of pressure head are little, do not stop up is with a wide range of applications.Ceramic grain filter receives more and more closer concern because of its cheap price and excellent performance, especially utilizes microorganism that the organic pollutant in the water is adsorbed in the BAF of handling with oxygenolysis and is bringing into play important effect.Flyash is industrial residue, if can mainly utilize flyash to produce biofilter material, both can environmental protection, and can economize on resources again.

Baking ceramsite must possess two primary conditions: high temperature can produce suitable viscosity and surface tension down, makes pellet softening; Chemical reaction takes place, and produces an amount of gas.Traditional sintering process is: under 1000-1200 ℃ high temperature, material is near molten state, and pellet is softening; Carbon dust or organic additive burning, high temperature such as inorganic salt such as lime carbonate decompose, and the gas of generation expands, and part is overflowed formation expansion porous pellet.Traditional technology temperature requirement height, heat-up time is long, consumes the more energy; Additive increases cost, and discharge the gas contamination atmosphere.Require the pellet drying before the high temperature sintering, discharge combination water and volatile component in 200-500 ℃ of scope, moisture is regarded " unfavorable composition ".During high temperature sintering, requirement guarantees that as far as possible pellet is softening and gets angry and carry out simultaneously, increased operation easier.

Summary of the invention

The purpose of this invention is to provide that a kind of cost is low, save energy, easily manufactured filter material for water treatment.

Another object of the present invention provides the preparation method of this filter material for water treatment.

A further object of the invention provides the purposes of this filter material for water treatment.

The objective of the invention is to realize by following technical proposal:

A kind of filter material for water treatment, this filtrate mainly adopts the raw material of following weight part:

Flyash 60-80 part, pearlstone 0-20 part, binding agent 5-15 part, 5~50 parts of pore-forming materials.

Described filtrate, wherein binding agent is a water glass, pore-forming material is a water.

The preparation method of described filtrate, this method may further comprise the steps:

(1) raw material mixing, granulation: get flyash 60-80 part by weight, pearlstone 0-20 part, binding agent 5-15 part, 5~50 parts of pore-forming materials mix binding agent earlier with an amount of pore-forming material, mix granulation with all the other compositions again;

(2) expansion molding: wet granular directly is put into shock heating expansion in the hot environment, and expansion temperature 300-900 ℃, time 2-10 minute;

(3) hot setting: the particle behind the expansion molding was through 900-1000 ℃ of roasting 2-10 minute;

(4) mechanical stirring: the particle behind the hot setting carries out mechanical stirring, makes the fragmentation of particle surface thin-walled small bubbles, increases perforate, promptly.

The application of described filtrate in biological water treatment is particularly as the application of filtrate in the BAF.

Below be the detailed description of technical solution of the present invention:

Flyash is industrial residue, utilization of waste material, and cost is low, increases its weight percentage in batching as far as possible.Under normal conditions, its fineness≤0.074mm.

Pearlstone, fineness scope 0.075~0.180mm, powder is thicker, mixes in the flyash, helps increasing the plasticity-(during granulation, pellet is soft, is easy to dilatational strain, prevents that again pellet is soft excessively, is difficult for spheroiding) of particle (also weighing ball).Pearlstone begins to expand about 900 ℃, can reduce the dense structure of pellet inside to a certain extent, reduce its density, and the intensity effect to material is little, and (shape substantially and constitutional features have been determined when the 400-700 ℃ of left and right sides, it can be to avoid the hole wall in the structure too fine and close that perlite after 900 ℃ expands, control perlitic content and fineness well, can not cause the pellet spalling; More than 900 ℃, pellet also can soften once more, can bear certain structure and change, and 900-1000 ℃ of roasting can allow hole wall fine and close more firm, may cause simultaneously the contraction of hole wall, be embedded in perlite on the hole wall structure that the contraction of offsetting hole wall brings that expands and shrink).

Water glass is made binding agent, can guarantee that pellet is easy to softening transform when heat build-up is expanded, and is difficult for bursting.

Flyash and pearlstone thorough mixing add the sodium silicate aqueous solution for preparing, and fully stir.Marumerizer directly tumbles warm pellet in the High Temperature Furnaces Heating Apparatus.Keep fire box temperature moderate, temperature Tai Gaotai is low all not too to be beneficial to the pellet expansion molding, and temperature is controlled at 300-900 ℃ generally speaking, preferably in 400-700 ℃ of scope.The pellet expansion molding time is shorter, and the pellet of expansion molding stopped 2-10 minute in stove, can finish the primary solidification of pellet.The wet feed ball has plasticity-and anti-capillary ability, under relatively lower temp, and the steam expansion pore-creating of shock heating generation, energy-saving and emission-reduction increase operability.Key of the present invention is embodied in the shock heating water vapor expansion pore-creating moulding process.

Pellet drops into the High Temperature Furnaces Heating Apparatus roasting, is advisable roasting time 2-10 minute for furnace temperature 900-1000 ℃.Too high maturing temperature and long roasting time can make pellet surface knot glaze.After the high-temperature roasting, naturally cooling.There is the thin-walled bubble on cooled pellet surface, puts into stirrer and mixes slightly, and the small bubbles on broken pellet surface increase surperficial perforate and roughness, increases specific surface area.

Beneficial effect of the present invention:

Filter material for water treatment provided by the invention is a main raw material with industrial residue flyash, is fired by special technology to form.The present invention adopts the wet feed ball to carry out the shock heating heating of high temperature, and the water in the pellet becomes water vapor rapidly, makes pellet expansion pore-creating, forms vesicular structure.The present invention carries out utilization of waste material to flyash, and adopts water vapor expansion pore-creating, does not need pellet is carried out dry in advance, need not to use additive, and overcome conventional sintering method temperature requirement height, heat-up time long, consume more shortcomings such as the energy.The particle performance testing index, and in the water treatment procedure, reducing COD and removing NH 3-N aspect has obtained very ideal effect, COD and NH 3The clearance of-N is all more than 90%.The raw materials cost that the present invention adopts is low, and the preparation method is simple, energy-conserving and environment-protective, and the water treatment effect is better, has good industrial applications prospect, is particularly suitable as filtrate in the BAF.

Embodiment

The invention will be further elaborated by the following examples.

Every weight part is 100g in following examples.

Embodiment 1

Raw material (by weight): 80 parts in flyash, 20 parts of pearlstones, 9 parts of water glass, 21 parts in water.

The prepare silicon acid sodium aqueous solution, concentration 30wt%.Flyash and pearlstone thorough mixing add sodium silicate solution, fully stir.Marumerizer, particle diameter 6~8mm, wet feed ball render in 500 ℃ of High Temperature Furnaces Heating Apparatuss, constant temperature 10 minutes, the shock heating heating of wet feed ball warp high temperature produces water vapor and makes pellet expansion pore-creating, moulding.Pellet is rendered in 950 ℃ the High Temperature Furnaces Heating Apparatus, roasting 5 minutes.Naturally cool to room temperature after coming out of the stove.Cooled pellet is put into agitator stir a moment, make the small bubbles fragmentation of pellet surface, form perforate.

Tap density, apparent density, wear rate and surface-area are measured according to the method that standard C J/T299-2008 provides.Granule strength is to be measured by ZQJ-II intelligence granule strength trier.

Characteristic parameter Test result Index Tap density ??0.60g/cm 3 Apparent density ??1.05g/cm 3 Wear rate ??2.3% ??≤6% Surface-area ??2.8×10 4cm 2/g ??≥0.5×10 4cm 2/g Granule strength 142N/

Filtrate is deposited in the filled column, and packing layer highly is 1m approximately, and vexed exposing to the sun carried out bio-film colonization with active sludge, and about 3-7 of biofilm time days, biofilm efficient height.Former water COD=705.4mg/L, NH 3-N=35.8mg/L.26 ℃ of envrionment temperatures, the waste water filled column of flowing through from bottom to top, hydraulic detention time 1h, aeration, gas-water ratio=10: 1.Water outlet COD=21.6mg/L, NH 3-N=0.9mg/L, clearance are respectively 96.9.0% and 97.5%.

Embodiment 2

Raw material (by weight): 80 parts in flyash, 10 parts of pearlstones, 10 parts of water glass, 30 parts in water.

The prepare silicon acid sodium aqueous solution, concentration 25wt%.Flyash and pearlstone thorough mixing add sodium silicate solution, fully stir.Marumerizer, particle diameter 6~8mm, wet feed ball render in 550 ℃ of High Temperature Furnaces Heating Apparatuss, constant temperature 10 minutes, the shock heating heating of wet feed ball warp high temperature produces water vapor and makes pellet expansion pore-creating, moulding.The cooling of coming out of the stove, pellet are rendered in 975 ℃ the High Temperature Furnaces Heating Apparatus, roasting 3 minutes.Naturally cool to room temperature after coming out of the stove.With cooled pellet, put into agitator and stir a moment, make the small bubbles fragmentation of pellet surface, form perforate.

Tap density, apparent density, wear rate and surface-area are measured according to the method that standard C J/T299-2008 provides.Granule strength is to be measured by ZQJ-II intelligence granule strength trier.

Characteristic parameter Test result Index Tap density ??0.57g/cm 3 Apparent density ??1.06g/cm 3 Wear rate ??2.0% ??≤6% Surface-area ??2.4×10 4cm 2/g ??≥0.5×10 4cm 2/g Granule strength 150N/

Filtrate is deposited in the filled column, and packing layer highly is 1m approximately, and vexed exposing to the sun carried out bio-film colonization with active sludge, and about 3-7 of biofilm time days, biofilm efficient height.Former water COD=605.3mg/L, NH 3-N=30.5mg/L.28 ℃ of envrionment temperatures, the waste water filled column of flowing through from bottom to top, hydraulic detention time 1h, aeration, gas-water ratio=10: 1.Water outlet COD=18.5mg/L, NH 3-N=0.8mg/L, clearance are respectively 97.0% and 97.4%.

Claims (5)

1. filter material for water treatment is characterized in that this filtrate mainly adopts the raw material of following weight part:
Flyash 60-80 part, pearlstone 0-20 part, binding agent 5-15 part, 5~50 parts of pore-forming materials.
2. filtrate according to claim 1 is characterized in that binding agent is a water glass, and pore-forming material is a water.
3. the preparation method of filtrate according to claim 1 is characterized in that this method may further comprise the steps:
(1) raw material mixing, granulation: get flyash 60-80 part by weight, pearlstone 0-20 part, binding agent 5-15 part, 5~50 parts of pore-forming materials mix binding agent earlier with an amount of pore-forming material, mix granulation with all the other compositions again;
(2) expansion molding: wet granular directly is put into shock heating expansion in the hot environment, and expansion temperature 300-900 ℃, time 2-10 minute;
(3) hot setting: the particle behind the expansion molding was through 900-1000 ℃ of roasting 2-10 minute;
(4) mechanical stirring: the particle behind the hot setting carries out mechanical stirring, makes the fragmentation of particle surface thin-walled small bubbles, increases perforate, promptly.
4. the application of the described filtrate of claim 1 in biological water treatment.
5. application according to claim 4 is characterized in that this application is as filtrate in the BAF with the described filtrate of claim 1.
CN2010101308878A 2010-03-23 2010-03-23 Filter material for water treatment and preparation method and application thereof CN101774684B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010101308878A CN101774684B (en) 2010-03-23 2010-03-23 Filter material for water treatment and preparation method and application thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010101308878A CN101774684B (en) 2010-03-23 2010-03-23 Filter material for water treatment and preparation method and application thereof

Publications (2)

Publication Number Publication Date
CN101774684A true CN101774684A (en) 2010-07-14
CN101774684B CN101774684B (en) 2012-07-04

Family

ID=42511309

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010101308878A CN101774684B (en) 2010-03-23 2010-03-23 Filter material for water treatment and preparation method and application thereof

Country Status (1)

Country Link
CN (1) CN101774684B (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102060457A (en) * 2010-11-30 2011-05-18 哈尔滨工业大学 Method for manufacturing filter material for biological aerated filter by utilizing waste fly ash and waste coal gangue
CN102258913A (en) * 2011-06-10 2011-11-30 谭海燕 Low-density ceramsite filter material for biological aerated filter, and preparation method thereof
CN102350135A (en) * 2011-08-08 2012-02-15 杰成纯水设备科技(太仓)有限公司 Production method of pearlite filter element
CN102786191A (en) * 2012-07-13 2012-11-21 哈尔滨工业大学 Method for preparing water treatment filter material by using waterworks sludge and sewage sludge
CN103482754A (en) * 2013-08-29 2014-01-01 华侨大学 Shell ceramsite biological carrier and preparation method thereof
CN106512551A (en) * 2016-12-12 2017-03-22 浙江工业大学 Amino-functionalized regenerated glass filter material for water treatment and preparation and application thereof
CN108558368A (en) * 2018-06-13 2018-09-21 徐州世润德环保科技有限公司 Multiporous biological filtrate and preparation method thereof
CN108863310A (en) * 2018-06-15 2018-11-23 徐州世润德环保科技有限公司 Fiber micropore biological filtrate and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1285335A (en) * 2000-09-29 2001-02-28 唐山陶瓷集团有限公司 Process for preparation of foam ceramic spherulite
JP2002241183A (en) * 2001-02-14 2002-08-28 Kawashima:Kk Porous ceramic particle and its production process
CN1369464A (en) * 2001-02-15 2002-09-18 王泽生 Powdered coal powder-pearlite haydite and its preparing process
CN1569683A (en) * 2003-07-24 2005-01-26 中国地质科学院成都矿产综合利用研究所 Novel filter material used in process of bio-aeration filter tank

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1285335A (en) * 2000-09-29 2001-02-28 唐山陶瓷集团有限公司 Process for preparation of foam ceramic spherulite
JP2002241183A (en) * 2001-02-14 2002-08-28 Kawashima:Kk Porous ceramic particle and its production process
CN1369464A (en) * 2001-02-15 2002-09-18 王泽生 Powdered coal powder-pearlite haydite and its preparing process
CN1569683A (en) * 2003-07-24 2005-01-26 中国地质科学院成都矿产综合利用研究所 Novel filter material used in process of bio-aeration filter tank

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102060457A (en) * 2010-11-30 2011-05-18 哈尔滨工业大学 Method for manufacturing filter material for biological aerated filter by utilizing waste fly ash and waste coal gangue
CN102060457B (en) * 2010-11-30 2012-09-05 哈尔滨工业大学 Method for manufacturing filter material for biological aerated filter by utilizing waste fly ash and waste coal gangue
CN102258913A (en) * 2011-06-10 2011-11-30 谭海燕 Low-density ceramsite filter material for biological aerated filter, and preparation method thereof
CN102258913B (en) * 2011-06-10 2013-07-17 谭海燕 Low-density ceramsite filter material for biological aerated filter, and preparation method thereof
CN102350135A (en) * 2011-08-08 2012-02-15 杰成纯水设备科技(太仓)有限公司 Production method of pearlite filter element
CN102350135B (en) * 2011-08-08 2013-09-18 杰成纯水设备科技(太仓)有限公司 Production method of pearlite filter element
CN102786191A (en) * 2012-07-13 2012-11-21 哈尔滨工业大学 Method for preparing water treatment filter material by using waterworks sludge and sewage sludge
CN103482754A (en) * 2013-08-29 2014-01-01 华侨大学 Shell ceramsite biological carrier and preparation method thereof
CN106512551A (en) * 2016-12-12 2017-03-22 浙江工业大学 Amino-functionalized regenerated glass filter material for water treatment and preparation and application thereof
CN106512551B (en) * 2016-12-12 2018-09-21 浙江工业大学 For the amino functional repeat glass filtrate of water process and its preparation and application
CN108558368A (en) * 2018-06-13 2018-09-21 徐州世润德环保科技有限公司 Multiporous biological filtrate and preparation method thereof
CN108863310A (en) * 2018-06-15 2018-11-23 徐州世润德环保科技有限公司 Fiber micropore biological filtrate and preparation method thereof

Also Published As

Publication number Publication date
CN101774684B (en) 2012-07-04

Similar Documents

Publication Publication Date Title
CN103467018B (en) Preparation method for preparing low-density oil well cementing cement briquettes by vermiculites
CN101948166B (en) Preparation method of modified biologically-activated filter fillings
CN106467387A (en) A kind of magnesium processes desulfurization produces the device and method of magnesium sulfate foamed bricks
CN101935195B (en) Porous phosphorus removing ceramic granules with function of slowly releasing alkali and preparation method thereof
CN100371303C (en) High porosity porous ceramics preparation method
CN103253925A (en) Plant ash concrete air-entrapping heat-insulating brick and production method thereof
KR100551249B1 (en) A construction material and composition
CN106278373B (en) Utilize the water-permeable brick and preparation method thereof of heavy metal sewage sludge preparation
Wu et al. Preparation of ceramic filler from reusing sewage sludge and application in biological aerated filter for soy protein secondary wastewater treatment
CN101585714B (en) Preparing method of ceram site fully using biosolid and sludge
CN101838034B (en) High efficiency hardening resistant micro-electrolysis material and preparation method thereof
CN101224972A (en) Lightweight ceramicite and preparation method thereof
CN101215149B (en) Low-temperature burning method for sludge glass ultra-light haydite
CN104788050B (en) A kind of haydite light-weight aggregate structural concrete and preparation method thereof
CN100528768C (en) Industrial residue based compound dephosphorization material
CN102078791A (en) Sludge activated carbon and preparation method thereof
KR101546240B1 (en) Antimicrobial porous ceramic tile and method of manufacturing the same
KR100994781B1 (en) Filling material having bottom ash of constructed wetland for the treatment of polluted water and preparation methods thereof
CN102674530B (en) Suspended electrobiological filler for removing ammonia nitrogen from water, preparation method for suspended electrobiological filler and application of suspended electrobiological filler
CN101314536A (en) Energy-conservation environment-friendly type EPS light aggregate concrete and manufacture method thereof
CN102400527B (en) Environment-friendly mineral wool board with functions of humidity adjustment and air purification and production method thereof
CN1150975C (en) Spherical porous light haydite for treating waste water and its production method
CN104944862B (en) Energy-saving wall material produced by using construction solid wastes and producing method of wall material
US10737238B2 (en) Ceramsite produced by using river/lake/sea sludge and seashell powder as raw materials and preparation method thereof
CN102815965A (en) Porous ceramsite made of low-silicon iron tailings and preparation method of porous ceramsite

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120704

Termination date: 20180323

CF01 Termination of patent right due to non-payment of annual fee