CN103382098B - Light biological carrier for water treatment, and preparation method and application of light biological carrier - Google Patents

Light biological carrier for water treatment, and preparation method and application of light biological carrier Download PDF

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CN103382098B
CN103382098B CN201310304061.2A CN201310304061A CN103382098B CN 103382098 B CN103382098 B CN 103382098B CN 201310304061 A CN201310304061 A CN 201310304061A CN 103382098 B CN103382098 B CN 103382098B
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carrier
pore
forming material
water
lightweight bio
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CN103382098A (en
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黄瑞敏
刘欣
文淦斌
黄春梅
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GUANGZHOU JIAJING WATER TREATMENT TECHNICAL ENGINEERING Co Ltd
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GUANGZHOU JIAJING WATER TREATMENT TECHNICAL ENGINEERING Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/30—Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy

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  • Biological Treatment Of Waste Water (AREA)

Abstract

The invention discloses a light biological carrier for water treatment, and a preparation method and application of the light biological carrier. Raw materials for preparing the light biological carrier comprise, in weight percent, 40%-50% of clay, 20%-30% of sludge, 20%-30% of perlite, 5%-15% of biomass pore-forming agents and 1%-2% of chemical pore-forming agents. The biomass pore-forming agents serve as main pore-forming agents and are made of waste biomass materials, inexpensive and easy to obtain. The prepared light biological carrier has the advantages that the density of the carrier is close to that of water, the surface of the carrier is uniformly strewn with sharp-angled projections, the carrier is large in specific surface area, high in porosity and strength and fine in stability, microbial attachment and biofilm formation are easily realized and the like.

Description

A kind of lightweight bio-carrier for water treatment and its preparation method and application
Technical field
The invention belongs to water-treatment technology field, relate to a kind of lightweight bio-carrier for water treatment and its preparation method and application.
Background technology
BAF is a kind of biomembrance process sewage treatment process, the carrier that this technique mainly adopts granular filler to adhere to as microbial film, realizes removing water pollutant by absorption crown_interception, the microbiological oxidation Decomposition being attached to microbial film on carrier and extracellular polymeric.BAF microorganism concn is high, collects bio-oxidation and retains suspended solids one, have volumetric loading, hydraulic load is large, the advantages such as hydraulic detention time is short, and required initial cost is few, and effluent quality is good.
BAF filler used, adopts the difference of raw material according to it, can be divided into mineral filler, organic polymer filler, conventional mineral filler has: gravel, haydite, coke, quartz sand, gac, expansion silico-aluminate, zeolite etc.Organic polymer filler has: polystyrene, polyvinyl chloride, polypropylene PE, various types of resins, plastics (comprising various foam materials), fiber.Organic polymer material, due to reasons such as price are more expensive, carrier surface forming biofilm property is not good, is applied less in BAF.And mineral filler is due to low price, the reason such as porosity is high, specific surface area is large, physical strength is better, is used widely in recent years in BAF.Particularly haydite, because it is cheap and easy to get, carrier surface forming biofilm property good, becomes the filtrate that BAF application is the most general gradually.
But in BAF, application and ceramics filling density sold on the market are comparatively large at present, are generally 1.5-2.5g/cm 3in operational process, filler is easily deposited on the bottom of reaction tank, along with the prolongation of BAF working time, due to the mechanical retention of filtrate, contact and biological flocculation and precipitation effect, mineral colloid particle is made constantly to be trapped in the middle of the hole of filler, meanwhile, the gap between the filler of BAF can constantly diminish to the biomembranous crown_interception that comes off with it because microbial film constantly grows, and head loss is in continuous increase.The blocking of filler, can cause the minimizing of water amount, produces channel, uses and reveal water short circuit, have a strong impact on treatment effect.When the thickness of film exceedes this scope simultaneously, the transfer rate of oxygen reduces, and affect the breeding of microorganism, this also will produce tremendous influence power to treatment effect.On the other hand after packing layer blocking, back flushing must be carried out, the pressure of water or gas is utilized to wash open blocking the filler hardened, utilize hydraulic shear by aging microbial film and be blocked in the interstitial material of filler and recoil away in flushing process, because existing haydite density is large, the pressure-losses of back flushing is very large, causes sizable energy consumption.Meanwhile, due to will pressure head be met in backwash process, so the shearing force of water is very large, is easy to cause overdevelopment, causes beneficial organism film to come off, so generally also there is the phenomenon of effluent quality decline after back flushing.Therefore, develop the less lightweight biological ceramic particle of density and become the key improving BAF treatment effect.
And the development of lightweight bio-carrier, be mainly the control of raw-material selection and internal voids rate.Existing lightweight biological ceramic particle is when burning is fired, and many employing chemical classes pore-forming materials, price is more expensive, pore-creating poor effect.Therefore, prior art has yet to be improved and developed.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of lightweight bio-carrier for water treatment and its preparation method and application, described lightweight bio-carrier is raw material primarily of clay, mud, perlite, pore-forming material, forms through high temperature sintering.Pore-forming material adopts waste biomass material, cheap and easy to get, and obtained lightweight bio-carrier has density and water is close, surface uniform is covered with tip-angled shape projection, specific surface area is large, porosity is high, intensity is high, good stability, be easy to the advantage such as microorganic adhesion and biofilm, be intended to solve existing employing chemical classes pore-forming material as pore-forming material, not only price is more expensive, and the problem of pore-creating poor effect.
Technical scheme of the present invention is as follows:
For a lightweight bio-carrier for water treatment, wherein, the raw materials of described lightweight bio-carrier, according to weight percent meter, comprises following component:
Clay 40% ~ 50%, mud 20% ~ 30%, perlite 20% ~ 30%, biomass pore-forming material 5% ~ 15%, chemical pore-forming material 1% ~ 2%.
The described lightweight bio-carrier for water treatment, wherein, described biomass pore-forming material is one or more in rice husk, Pericarppium arachidis hypogaeae, wood chip.
The described lightweight bio-carrier for water treatment, wherein, described chemical pore-forming material can be MgCO 3.
For a preparation method for the lightweight bio-carrier of water treatment, wherein, the preparation method of the described lightweight bio-carrier for water treatment comprises the following steps:
Raw material drying: clay, mud, perlite are dried under the sun or naturally dries, pore-forming material is dried or is dried under the sun;
Batch mixing proportioning: raw material is pressed clay 40% ~ 50%, mud 20% ~ 30%, perlite 20% ~ 30%, biomass pore-forming material 5% ~ 15%, the ratio of chemical pore-forming material 1% ~ 2% mixes;
Grinding is sieved: the raw material after batching is sent into ball mill grinding and becomes powder, and cross 200 mesh sieves;
Granulating and forming: add water in powder and stir, amount of water is 15% ~ 20% of powder weight; Put in tablets press and carry out granulation;
Pellet is dry: under the pellet made is placed in sunlight or dry under state of nature;
Pre-thermal sintering: put in rotary kiln by dried pellet, burns swollen vitrification;
Naturally cooling after kiln discharge.
The preparation method of the described lightweight bio-carrier for water treatment, wherein, the shape of described pellet is form of spherical particles, and particle diameter is 3 ~ 8mm.
The preparation method of the described lightweight bio-carrier for water treatment, wherein, the process of vitrification that described burning is swollen at 1000 ~ 1200 DEG C of temperature, burns swollen 20min to vitrification.
As above for an application for the lightweight bio-carrier of water treatment, wherein, the described lightweight bio-carrier being used for water treatment is applied in water treatment procedure as microbe carrier.
The application of the described lightweight bio-carrier for water treatment, wherein, is used as the microbe carrier in BAF by the described lightweight bio-carrier being used for water treatment.
Beneficial effect: lightweight bio-carrier provided by the invention, forms through high temperature sintering for raw material with clay, mud, perlite and pore-forming material.Pore-forming material adopts waste biomass material, cheap and easy to get, and the lightweight bio-carrier prepared has following features: (1) surface is covered with tip-angled shape projection, surfaceness is large, specific surface area is large, can promote attachment and the growth and breeding of microorganism, and surface attachment microbial biomass increases; (2) density is little, suitable with the density of water, expansion or suspension bed can be formed in filter bed, add the contact surface of gas, liquid, microbial film three-phase, improve the mass transfer coefficient between microbial film, gas, liquid contact surface, thus be conducive to reinforcing mass transfer effect, significantly improve pollutants removal rate; (3) porosity is large, not easily blocks, and reduces the backwashing water consumption energy consumption of BAF, reduces processing cost.
Embodiment
The invention provides a kind of lightweight bio-carrier for water treatment and its preparation method and application, for making object of the present invention, technical scheme and effect clearly, clearly, the present invention is described in more detail below.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Lightweight bio-carrier provided by the invention, forms through high temperature sintering for raw material with clay, mud, perlite and pore-forming material.Described pore-forming material comprises biomass pore-forming material and chemical pore-forming material.Described biological pore-forming material adopts waste biomass material, cheap and easy to get.Described biomass pore-forming material is one or more in rice husk, Pericarppium arachidis hypogaeae, wood chip.Described chemical pore-forming material can be MgCO 3.
Particularly, the raw materials of described lightweight bio-carrier, according to weight percent meter, comprises following component:
Clay 40% ~ 50%, mud 20% ~ 30%, perlite 20% ~ 30%, biomass pore-forming material 5% ~ 15%, chemical pore-forming material 1% ~ 2%.
The described preparation method for the lightweight bio-carrier of water treatment is also provided in the present invention, comprises raw material drying, is mixed, grind sieve, the drying of granulating and forming, pellet, preheating, high temperature sintering and process of cooling.Its concrete operations are as follows:
1, raw material drying: clay, mud, perlite are dried under the sun or naturally dries; Pore-forming material dries or dries under the sun;
2, batch mixing proportioning: raw material is pressed clay 40% ~ 50%, mud 20% ~ 30%, perlite 20% ~ 30%, biomass pore-forming material 5% ~ 15%, the ratio of chemical pore-forming material 1% ~ 2% mixes;
3, grinding is sieved: the raw material after batching is sent into ball mill grinding and becomes powder, and cross 200 mesh sieves;
4, granulating and forming: add water in the powder mixed and stir, amount of water is 15% ~ 20% of powder weight, puts in tablets press and carries out granulation, and its shape is form of spherical particles, and size controlling is at 3 ~ 8mm;
5, pellet is dry: dry under the pellet made is placed in sunlight or under state of nature;
6, pre-thermal sintering: dried pellet is put in rotary kiln, burns swollen 20min to vitrification at 1000 ~ 1200 DEG C of temperature;
7, naturally cooling after kiln discharge.
The lightweight bio-carrier obtained is the form of spherical particles that surface uniform is covered with tip-angled shape projection, and its particle diameter is 3mm ~ 8mm, and specific gravity range is 1.05 ~ 1.10g/cm 3.
Described lightweight bio-carrier is applicable to be applied in water treatment procedure as microbe carrier; Particularly be applicable to the application as microbe carrier in BAF, filler turgidity can be significantly improved, prevent the phenomenon such as blocking, channel that may occur in BAF operational process.
The distinguishing feature of described lightweight bio-carrier of the present invention is:
1, pore-forming material used is rice husk, Pericarppium arachidis hypogaeae, wood chip etc., is agricultural or forestry waste, cheap and easy to get, can reduce production cost, realize the recycling of waste.
2, pore-forming material used can be formed at the microporous carbon powder that pottery well-formed combines under 1000-1200 DEG C of rotary kiln firing condition, voidage is high, both can play adsorb organic compound in the treatment of waste water, also there is good biocompatibility and become the biological support material of high capacity amount.
3, the use of pore-forming material and the determination of each batch mixing ratio make the density of lightweight bio-carrier and water close, be distributed in 1.05 ~ 1.10g/cm more 3, in expanding or half suspended state in reaction tank, carrier mixes with water fully, and the phenomenon effectively avoiding filter tank blocking, channel and filtrate to harden, improves the clearance of pollutent, and the energy consumption that simultaneously can reduce back flushing saves running cost.
4, perliticly add that the biology making to make carries the tiny projection of surface presentation, porosity is high, specific surface area is large, intensity is high, good stability, the attachment being easy to microorganism and growth and breeding, thus form thicker biological membranous layer, improve the removal effect of pollutent.
Below by way of embodiment, the invention will be further described.
Embodiment 1:
The raw material of the lightweight bio-carrier for water treatment in the present embodiment is calculated by mass percentage, is respectively: clay 40%, mud 25%, perlite 20%, husk (i.e. rice husk) 7%, wood chip 7%, MgCO 31%.
The lightweight bio-carrier that the present embodiment is used for water treatment obtains by the following method:
1, raw material is dried under the sun;
2, raw material is pressed clay 40%, mud 25%, perlite 20%, husk 7%, wood chip 7%, MgCO 3the ratio of 1% mixes;
3, the raw material after batching is sent into ball mill grinding and become powder, and cross 200 mesh sieves;
4, add water in the powder mixed and stir, amount of water is 15% of powder weight, puts in tablets press and carries out granulation, and its shape is form of spherical particles, and size controlling is at 3 ~ 8mm;
5, pellet is put in rotary kiln and at 1000-1200 DEG C of temperature, burn swollen 20min to vitrification, naturally cooling after kiln discharge.
Bio-carrier real density 1.05 ~ 1.10g/cm that the present embodiment is made 3, particle diameter is 4 ~ 8mm, and spheroidal particle surface uniform is covered with tip-angled shape projection.
Adopt the above-mentioned lightweight bio-carrier made as microorganism carrier in BAF, carry out the test of BAF advanced treatment printing and dyeing mill dyeing waste water.
This is tested seed sludge used and takes from this factory's aerobic biochemical pool mud, and first made lightweight bio-carrier is put into BAF and carry out vexed exposing to the sun, every day period adds nutritive substance by C:N:P=100:5:1.Change low discharge water inlet after 5 days into, sewage used is from this printing and dyeing mill's physico-chemical precipitation pond water outlet, and gas-water ratio maintains between 3:1 ~ 5:1, and after running 30 days continuously, it is velvet-like canescence microbial film that carrier surface attached to one deck as seen, and biofilm success is described.In biofilm process, COD clearance progressively rises, final outflow water COD is more stable, think that made lightweight bio-carrier porosity is high, surface irregularity, specific surface area are large, therefore adsorptive power is very strong, and starting stage pollutent is adsorbed by haydite very soon thus removed, along with biomembranous growth, the cutting mechanisms of pollutent changes the oxygenolysis of microorganism into, and its clearance constantly rises until stable.Through the time of about 20 days, water outlet COD was more stable, and clearance reaches more than 60%.
BAF enters normal operating phase after the startup biofilm of 30 days, runs two months continuously, to principal pollutant chemical oxygen demand (COD) (COD), ammonia nitrogen (NH 3-N) and suspended substance (SS) monitor.In this test, waste water is from this printing and dyeing mill's physico-chemical precipitation pond water outlet (this factory wastewater treatment process is anaerobic-aerobic-materialization), and gas-water ratio maintains between 3:1 ~ 5:1, and hydraulic load is 0.8m 3/ m 2h, hydraulic detention time is 3h, influent COD, ammonia nitrogen is respectively 95 ~ 120mg/L, 15.5 ~ 25.2mg/L, BAF is to COD, the clearance of ammonia nitrogen reaches 61.5% ~ 68.9% respectively, 58.9% ~ 72.3%, even if illustrate at wastewater biodegradability poor, when organic contamination substrate concentration is lower (COD is lower than 150mg/L), adopt the BAF of lightweight bio-carrier described in this patent still can keep higher clearance, particularly to the processing efficiency of ammonia nitrogen far away higher than existing general aerobic biological treatment process, contribute to meeting increasingly strict ammonia nitrogen emission standard.
(real density is 1.5 ~ 2.5g/cm for lightweight bio-carrier for water treatment provided by the invention and ordinary ceramsite filtrate 3) under identical back washing strength condition during (operating mode 1) back flushing, ordinary ceramsite, under the effect of air water stream, moves on the bulk that hardens, and is difficult to scatter; Lightweight bio-carrier moves in dispersion fluidized state, is beneficial to back flushing.All identical in the gentle amount of the back flushing water yield, when lightweight bio-carrier turgidity is 30%, ordinary ceramsite turgidity is but less than 10%.For reaching the backwash effect of turgidity 20%, the backwashing strength of ordinary ceramsite BAF must meet the requirement of operating mode 2.As can be seen here, lightweight bio-carrier due to its proportion and water close to and demonstrate clear superiority: recoil air consumption with wash that water loss is little, developing result good, back flushing is easy, can save energy consumption.The concrete backwash rate condition of operating mode 1 and operating mode 2 is as shown in table 1.
Table 1
Embodiment 2:
The raw material of the lightweight bio-carrier for water treatment in the present embodiment is calculated by mass percentage, is respectively: clay 50%, mud 20%, perlite 20%, Pericarppium arachidis hypogaeae 7%, wood chip 2%, MgCO 31%.
The lightweight bio-carrier that the present embodiment is used for water treatment obtains by the following method:
1, raw material is dried under the sun;
2, raw material is pressed clay 50%, mud 20%, perlite 20%, Pericarppium arachidis hypogaeae 7%, wood chip 2%, MgCO 3the ratio of 1% mixes;
3, the raw material after batching is sent into ball mill grinding and become powder, and cross 200 mesh sieves;
4, add water in the powder mixed and stir, amount of water is 20% of powder weight, puts in tablets press and carries out granulation, and its shape is form of spherical particles, and size controlling is at 3 ~ 8mm;
5, pellet is put in rotary kiln and at 1000-1200 DEG C of temperature, burn swollen 20min to vitrification, naturally cooling after kiln discharge.
Bio-carrier real density 1.05 ~ 1.10g/cm that the present embodiment is made 3, particle diameter is 4 ~ 8mm, and spheroidal particle surface uniform is covered with tip-angled shape projection.
Adopt the above-mentioned lightweight bio-carrier made as microorganism carrier in BAF, carry out the test of BAF advanced treatment printing and dyeing mill dyeing waste water.
This is tested seed sludge used and takes from this factory's aerobic biochemical pool mud, and first made lightweight bio-carrier is put into BAF and carry out vexed exposing to the sun, every day period adds nutritive substance by C:N:P=100:5:1.Change low discharge water inlet after 5 days into, sewage used is from this printing and dyeing mill's physico-chemical precipitation pond water outlet, and gas-water ratio maintains between 3:1 ~ 5:1, and after running 30 days continuously, it is velvet-like canescence microbial film that carrier surface attached to one deck as seen, and biofilm success is described.In biofilm process, COD clearance progressively rises, final outflow water COD is more stable, think that made lightweight bio-carrier porosity is high, surface irregularity, specific surface area are large, therefore adsorptive power is very strong, and starting stage pollutent is adsorbed by haydite very soon thus removed, along with biomembranous growth, the cutting mechanisms of pollutent changes the oxygenolysis of microorganism into, and its clearance constantly rises until stable.Through the time of about 20 days, water outlet COD was more stable, and clearance reaches more than 60%.
BAF enters normal operating phase after the startup biofilm of 30 days, runs two months continuously, to principal pollutant chemical oxygen demand (COD) (COD), ammonia nitrogen (NH 3-N) and suspended substance (SS) monitor.In this test, waste water is from this printing and dyeing mill's physico-chemical precipitation pond water outlet (this factory wastewater treatment process is anaerobic-aerobic-materialization), and gas-water ratio maintains between 3:1 ~ 5:1, and hydraulic load is 0.8m 3/ m 2h, hydraulic detention time is 3h, influent COD, ammonia nitrogen is respectively 95 ~ 120mg/L, 15.5 ~ 25.2mg/L, BAF is to COD, the clearance of ammonia nitrogen reaches 61.5% ~ 68.9% respectively, 58.9% ~ 72.3%, even if illustrate at wastewater biodegradability poor, when organic contamination substrate concentration is lower (COD is lower than 150mg/L), adopt the BAF of lightweight bio-carrier described in this patent still can keep higher clearance, particularly to the processing efficiency of ammonia nitrogen far away higher than existing general aerobic biological treatment process, contribute to meeting increasingly strict ammonia nitrogen emission standard.
Embodiment 3:
The raw material of the lightweight bio-carrier for water treatment in the present embodiment is calculated by mass percentage, is respectively: clay 45%, mud 20%, perlite 28%, Pericarppium arachidis hypogaeae 3%, wood chip 2%, MgCO 32%.
The lightweight bio-carrier that the present embodiment is used for water treatment obtains by the following method:
1, raw material is dried under the sun;
2, raw material is pressed clay 45%, mud 20%, perlite 28%, Pericarppium arachidis hypogaeae 3%, wood chip 2%, MgCO 3the ratio of 2% mixes;
3, the raw material after batching is sent into ball mill grinding and become powder, and cross 200 mesh sieves;
4, add water in the powder mixed and stir, amount of water is 17% of powder weight, puts in tablets press and carries out granulation, and its shape is form of spherical particles, and size controlling is at 3 ~ 8mm;
5, pellet is put in rotary kiln and at 1000-1200 DEG C of temperature, burn swollen 20min to vitrification, naturally cooling after kiln discharge.
Bio-carrier real density 1.05 ~ 1.10g/cm that the present embodiment is made 3, particle diameter is 4 ~ 8mm, and spheroidal particle surface uniform is covered with tip-angled shape projection.
Adopt the above-mentioned lightweight bio-carrier made as microorganism carrier in BAF, carry out the test of BAF advanced treatment printing and dyeing mill dyeing waste water.
This is tested seed sludge used and takes from this factory's aerobic biochemical pool mud, and first made lightweight bio-carrier is put into BAF and carry out vexed exposing to the sun, every day period adds nutritive substance by C:N:P=100:5:1.Change low discharge water inlet after 5 days into, sewage used is from this printing and dyeing mill's physico-chemical precipitation pond water outlet, and gas-water ratio maintains between 3:1 ~ 5:1, and after running 30 days continuously, it is velvet-like canescence microbial film that carrier surface attached to one deck as seen, and biofilm success is described.In biofilm process, COD clearance progressively rises, final outflow water COD is more stable, think that made lightweight bio-carrier porosity is high, surface irregularity, specific surface area are large, therefore adsorptive power is very strong, and starting stage pollutent is adsorbed by haydite very soon thus removed, along with biomembranous growth, the cutting mechanisms of pollutent changes the oxygenolysis of microorganism into, and its clearance constantly rises until stable.Through the time of about 20 days, water outlet COD was more stable, and clearance reaches more than 60%.
BAF enters normal operating phase after the startup biofilm of 30 days, runs two months continuously, to principal pollutant chemical oxygen demand (COD) (COD), ammonia nitrogen (NH 3-N) and suspended substance (SS) monitor.In this test, waste water is from this printing and dyeing mill's physico-chemical precipitation pond water outlet (this factory wastewater treatment process is anaerobic-aerobic-materialization), and gas-water ratio maintains between 3:1 ~ 5:1, and hydraulic load is 0.8m 3/ m 2h, hydraulic detention time is 3h, influent COD, ammonia nitrogen is respectively 95 ~ 120mg/L, 15.5 ~ 25.2mg/L, BAF is to COD, the clearance of ammonia nitrogen reaches 61.5% ~ 68.9% respectively, 58.9% ~ 72.3%, even if illustrate at wastewater biodegradability poor, when organic contamination substrate concentration is lower (COD is lower than 150mg/L), adopt the BAF of lightweight bio-carrier described in this patent still can keep higher clearance, particularly to the processing efficiency of ammonia nitrogen far away higher than existing general aerobic biological treatment process, contribute to meeting increasingly strict ammonia nitrogen emission standard.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.

Claims (2)

1. for a lightweight bio-carrier for water treatment, it is characterized in that the raw materials of described lightweight bio-carrier, according to weight percent meter, comprises following component:
Clay 40% ~ 50%, mud 20% ~ 30%, perlite 20% ~ 30%, biomass pore-forming material 5% ~ 15%, chemical pore-forming material 1% ~ 2%;
Described biomass pore-forming material is one or more in rice husk, Pericarppium arachidis hypogaeae, wood chip; Described chemical pore-forming material is MgCO 3;
The lightweight bio-carrier obtained is the form of spherical particles that surface uniform is covered with tip-angled shape projection, and its particle diameter is 3mm ~ 8mm, and specific gravity range is 1.05 ~ 1.10g/cm 3.
2. for a preparation method for the lightweight bio-carrier of water treatment, it is characterized in that, the preparation method of the described lightweight bio-carrier for water treatment comprises the following steps:
Raw material drying: clay, mud, perlite are dried under the sun or naturally dries, pore-forming material is dried or is dried under the sun;
Batch mixing proportioning: raw material is pressed clay 40% ~ 50%, mud 20% ~ 30%, perlite 20% ~ 30%, biomass pore-forming material 5% ~ 15%, the ratio of chemical pore-forming material 1% ~ 2% mixes; Described biomass pore-forming material is one or more in rice husk, Pericarppium arachidis hypogaeae, wood chip; Described chemical pore-forming material is MgCO 3;
Grinding is sieved: the raw material after batching is sent into ball mill grinding and becomes powder, and cross 200 mesh sieves;
Granulating and forming: add water in powder and stir, amount of water is 15% ~ 20% of powder weight; Put in tablets press and carry out granulation;
Pellet is dry: under the pellet made is placed in sunlight or dry under state of nature;
Pre-thermal sintering: put in rotary kiln by dried pellet, burns swollen vitrification; The process of vitrification that described burning is swollen at 1000 ~ 1200 DEG C of temperature, burns swollen 20min to vitrification;
Naturally cooling after kiln discharge;
The lightweight bio-carrier obtained is the form of spherical particles that surface uniform is covered with tip-angled shape projection, and its particle diameter is 3mm ~ 8mm, and specific gravity range is 1.05 ~ 1.10g/cm 3.
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CN104341168B (en) * 2014-10-28 2016-04-06 宁夏天纵泓光余热发电技术有限公司 Light thermal-shield refractory castable
CN105060459B (en) * 2015-08-05 2017-05-17 四川建环科技有限公司 Water treatment enzymatic biological stuffing and preparation method thereof
CN107487836A (en) * 2017-08-25 2017-12-19 兰州铁道设计院有限公司 A kind of preparation method of city sludge bio-carrier
CN109607778A (en) * 2019-01-31 2019-04-12 北京潮白环保科技股份有限公司 The processing method of the carrier of nitrate in a kind of removal water body
CN113121259A (en) * 2021-03-17 2021-07-16 宜兴摩根热陶瓷有限公司 Light heat-insulating refractory material and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003225688A (en) * 2002-02-05 2003-08-12 Toray Eng Co Ltd Water purifying material and water purifying method
CN1792411A (en) * 2005-11-28 2006-06-28 哈尔滨工业大学 Filtering material used for water-treatment made from waste mud and its prodn. method
CN101798140A (en) * 2010-03-26 2010-08-11 河海大学 Filter material for biological aerated filter and preparation method thereof
CN102266752A (en) * 2011-06-24 2011-12-07 东北师范大学 Method for preparing carbonizing absorption grains used for purifying water

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003225688A (en) * 2002-02-05 2003-08-12 Toray Eng Co Ltd Water purifying material and water purifying method
CN1792411A (en) * 2005-11-28 2006-06-28 哈尔滨工业大学 Filtering material used for water-treatment made from waste mud and its prodn. method
CN101798140A (en) * 2010-03-26 2010-08-11 河海大学 Filter material for biological aerated filter and preparation method thereof
CN102266752A (en) * 2011-06-24 2011-12-07 东北师范大学 Method for preparing carbonizing absorption grains used for purifying water

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