CN1594117A - Ceramic filtering material filter tank for water treatment - Google Patents
Ceramic filtering material filter tank for water treatment Download PDFInfo
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- CN1594117A CN1594117A CN 200410013438 CN200410013438A CN1594117A CN 1594117 A CN1594117 A CN 1594117A CN 200410013438 CN200410013438 CN 200410013438 CN 200410013438 A CN200410013438 A CN 200410013438A CN 1594117 A CN1594117 A CN 1594117A
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- filter material
- ceramic filter
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- filtrate
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Abstract
The invention discloses a ceramic filtering material filter tank for water treatment comprising a pool with filtrate laid thereon, a supporting layer is arranged below the filtrate layer, a water outlet is arranged on the lower portion of the pool, the filtrate is of ceramic type with an upper layer and a lower layer.
Description
Technical field
The present invention relates to the filtering basin that use in the extensive water treatment process, particularly use the filtering basin of media filtration.
Background technology
In water treatment process, filtration process is an extremely important link, and it not only can remove the tiny colloidal solid in the former water effectively, and is to intercept the disease caused by infectious water pathogenic microorganism to penetrate, thereby prevents aquatic pandemic outburst and the important leverage that spreads.
In the engineering of water treatment practice at home and abroad, extensive domestic water is handled, and generally is to adopt the filtering basin with filtrate, and existing filtering basin comprise the pond body, are covered with certain thickness filtrate in the body of pond, and the below of filter material layer is a supporting layer; The principle of work of filtering basin is: water to be filtered enters filtering basin from the top of filtering basin, and under action of gravity, the filtrate of water by laying in the body of pond flows out from body bottom, pond through supporting layer, and the dirt in the water is come out by media filtration.
Filtering basin are to adopt quartz sand as the filtrate in the filtering basin traditionally, but adopt quartz sand to have following defective: 1, owing to the reason of gravity and current as filtrate, the proportion of adding quartz sand is all consistent, being layered on the intravital quartz sand in pond often forms: the quartz sand size on upper strata is little, the situation that the quartz sand size of lower floor is big; Like this, the dirt in most of water is held back by upper strata small grain size quartz sand and is piled up, and forms the film that one deck is made up of dirt, this tunic has hindered flowing of water, head loss in filtration cycle is increased fast, reduce production efficiency, also make the filtrate retaining power reduce simultaneously.2, because the dirt that filters out concentrates on the upper strata of filtrate, make the cycle of operation of filtering basin very short, generally filter 4-5 after individual hour, its filter back water turbidity is in constantly rising of beginning, and filter back water quality begins to worsen; After reaching 24 hours filtration cycle, it goes turbid efficient that significant decline can take place.3, filtering basin go turbid decrease in efficiency when the certain value, must carry out back flushing to filtrate with clear water, be about to clear water and be pressed into the pond body from body bottom, pond, the clear water that is pressed into washes filtrate, the sewage after the flushing is discharged from body top, pond; Because dirt mostly concentrates in the filtrate of upper strata, and the water pressure that arrives the upper strata reduces greatly, so just need great back washing strength to make it recover regeneration, its regeneration effect may can't meet the demands, therefore the long-time flushing of needs could be with the filtrate wash clean, so not only unnecessarily increase back flushing energy consumption and water loss, and easily caused the wearing and tearing of filtrate, totally unfavorable to its long-time running.
For above-mentioned reasons, the complex art benefit of existing filtering basin is generally not high.
Summary of the invention
Technical problem to be solved by this invention is: a kind of ceramic filter material filtering basin that are used for water treatment are provided, and the production efficiency height of these filtering basin, retaining power is strong, and the cycle of operation is long, and the water loss of back flushing is little.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: it comprises the pond body, is covered with filtrate in the body of pond, and the below of filter material layer is provided with supporting layer, and the bottom of pond body is provided with water outlet; Filtrate is a ceramic filter material, and it is divided into two-layer, and it is the filtering material particle of 1.2-1.6mm that the upper strata ceramic filter material adopts particle diameter, and proportion is 0.8-1.8g/cm
3, it is the filtering material particle of 0.6-1.2mm that lower floor's ceramic filter material adopts particle diameter, proportion is 1.8-2.5g/cm
3
Filtering basin of the present invention adopt the mode of " the anti-granularity filtration " of original creation, and promptly the upper strata ceramic filter material adopts the big and less filtrate of proportion of particle diameter, and because the proportion of upper strata ceramic filter material is less, upper strata ceramic filter material void content is very big; The lower floor ceramic filter material adopts the less and big filtrate of proportion of particle diameter, and because the proportion of lower floor's ceramic filter material is bigger, lower floor's ceramic filter material is solid filtrate or the less filtrate of void content.
The principle of work of filtering basin of the present invention is: the particle diameter of filtering basin upper strata filtrate is bigger, and therefore intergranular porosity is also bigger; The particle apparent porosity is bigger, granule interior has very big specific surface area and extremely strong adsorptive power, so retaining power is still stronger, bigger porosity of while also helps the impurity particle in the water to continue to be deep into the inside of filtering layer, makes holding filth capacity accomplish uniformly distributing.The particle diameter of filtering basin lower floor filtrate is less, therefore intergranular porosity is also less, the particle apparent porosity is also very little, can prevent the penetrating of fine particle in the sealing (these particles are the main source of colourity material in the waste water often) effectively, thereby reach splendid effluent quality.
Because the manufacture craft of ceramic filter material is simple, the big and proportion of the particle diameter of ceramic filter material can be in manufacture craft flexible, and the making raw material sources of ceramic filter material are abundant, therefore, the filtrate employing ceramic filter material that uses in the filtering basin of the present invention.
In addition, the ceramic filter material that uses in the filtering basin of the present invention, because the proportion of upper strata ceramic filter material is less, lower floor's ceramic filter material proportion is bigger, after back flushing, still can remain on the layering of whole filtrate, the mixed layer phenomenon of filtrate can not occur.The very big difficulty that also reduces back flushing of the intergranular porosity of upper strata ceramic filter material, make the adsorption and desorption process be retained in the impurity particle in the filtrate finish in fast all the time, this retaining power to the recovery regeneration of ceramic filter material and stable for extended periods of time is very favourable.
The filter material layer below of filtering basin of the present invention is a supporting layer, its objective is to guarantee to stablize structure of filtering layer in the process of filtration and back flushing.
Compared with prior art, the present invention also has the following advantages:
1, from filtering the cycle of operation, ceramic filter material filtering basin of the present invention have embodied more excellent performance than quartz sand filter media filtering basin, because it filters dirt being evenly distributed in whole filtering layer of getting off, thereby can in 57 hours the continuous cycle of operation, all keep the ability of impurity in the very high removal water, kept higher filtering velocity simultaneously, the increasing degree of head loss is less relatively.
2, from detersive efficiency, ceramic filter material is than the high 5-10% of quartz sand filter media, and along with the increase of filtration time, the advantage of ceramic filter material on retaining power is more obvious, this mainly is because ceramic filter material has bigger internal surface area, so fine particle impurity is very capable in the planar water, and this point traditional filtrate lacked just.
3, the regulating power that changes from raw water quality, when bigger fluctuation takes place in influent turbidity (50% rangeability), behind ceramic filter material filtering basin of the present invention, the water quality of filter back water still can keep stable, the rangeability of its delivery turbidity is about 5-8%, this explanation ceramic filter material layer is resisted the very capable of impact load, can guarantee to filter the stable of back water quality effectively.
4, from economic benefit, because filtering basin of the present invention have prolonged the filtering cycle effectively, so its required develop fee is more much smaller than traditional quartz sand filter media filtering basin with (comprising maintenance management expense of water consumption, power consumption and equipment or the like), and this part expense is the major portion of water factory's day-to-day operation expense, so the benefit highly significant of filtering basin of the present invention.On the other hand, owing to adopt ceramic filter material, the coagulant cost that water factory is used for the leading portion processing has also descended half, and the coagulating agent consumption is the major economic indicators of water factory's day-to-day operation equally.
So comprehensive, adopt filtering basin of the present invention, be expected to be the day-to-day operation of the water factory 25-30% that reduces expenses.Ceramic filter material detects through inspection center, its every performance index all reach and are better than the quality standard of national regulation fully, not only better than existing various media performance, what is more important, the stripping salts contg of ceramic filter material in water is extremely low, satisfies the sanitary standard for drinking water of national regulation fully.
Description of drawings
Fig. 1 is a filtering basin example structure synoptic diagram of the present invention.
Fig. 2 removes the efficiency diagram of turbidity for quartz sand filter media.
Fig. 3 schemes over time for water quality after the quartz sand filter media metafiltration.
Fig. 4 is the filtering velocity comparison diagram over time of quartz sand filter media layer and ceramic filter material layer, and the curve that is positioned at the top among the figure is the filtering velocity of ceramic filter material, and the curve that is positioned at the below is the filtering velocity of quartz sand filter media.
Fig. 5 schemes over time for the clearance of ceramic filter material.
Fig. 6 is the adjusting situation of ceramic filter material layer to the influent turbidity load variations, and the curve that is positioned at the top among the figure is a raw water turbidity, and the curve that is positioned at the below is filter back water turbidity.
Embodiment
Filtering basin embodiment of the present invention as shown in Figure 1, filtering basin comprise pond body 1, are covered with filtrate in the body of pond, and the below of filter material layer is a supporting layer 4, and supporting layer 4 is made up of pebbles; The bottom of pond body 1 is provided with water outlet 5; Filtrate is a ceramic filter material, and it is divided into two-layer, and it is the filtering material particle of 1.2-1.6mm that upper strata ceramic filter material 2 adopts particle diameter, and proportion is 0.8-1.8g/cm
3, it is the filtering material particle of 0.6-1.2mm that lower floor's ceramic filter material 3 adopts particle diameter, proportion is 1.8-2.5g/cm
3The ceramic filter material total thickness is 600-800mm, and ceramic filter material 2 thickness in upper strata are 400-500mm, and lower floor's ceramic filter material 3 thickness are 200-300mm.The thickness of supporting layer 4 is 150mm.
The concrete parameter of filtering basin embodiment 1-4 of the present invention sees the following form:
| Upper strata | Lower floor's | |||||
| Particle diameter (mm) | Proportion (g/cm 3) | Thickness (mm) | Particle diameter (mm) | Proportion (g/cm 3) | Thickness (mm) | |
| | ?????1.2-1.6 | ????0.8-1.8 | ??470 | ????0.6-1.2 | ?????1.8-2.5 | ??200 |
| | ?????1.2 | ????1.8 | ??500 | ????0.6 | ?????1.8 | ??300 |
| | ?????1.6 | ????0.8 | ??500 | ????1.2 | ?????2.5 | ??300 |
| Embodiment 4 | ?????1.2-1.6 | ????0.8 | ??400 | ????0.6-1.2 | ?????2.5 | ??200 |
Above-mentioned ceramic filter material can adopt following method manufacturing:
Prepare burden by following composition of raw materials (weight percent);
(1) oxygen aluminium red mud 26%, flyash 20%, coal gangue 20%, clay 10%, sawdust pore former 20% increases temperature cakingagent (nepheline potash feldspar) 4% outward.
(2) pulverize and mix with ball mill, sieve then (100-180 order) is standby;
(3) adopt the nodulizer balling-up.Before the balling-up, low temperature binder CMC is made into mixed solution with 1: 2 ratio (weight) in entry, sprays into gradually in the blank of nodulizer again.
(4) will become good ball to put into dry drawer, push dry base car, and, reinstall in the pallet saggar and burn till at 1100 ℃-1250 ℃ at 80-120 ℃ of dry 4-5 hour.
The grating of the various particle diameters among the filtering basin embodiment 1,4 of the present invention, the ceramic filter material of proportion can be uniformly, also can be arbitrarily.
Filtering basin embodiment of the present invention 1 and the filtering basin of making filtrate with quartz sand have carried out the contrast experiment of natural former water treatment.Experiment condition is as follows:
In this experiment, the turbidity of natural former water (what of impurity component in the reflection water) is controlled in the scope of 10-17 degree, and impurities particulate median size is 0.076mm in the former water.Quartz sand is homogeneous filtering material, and its mean particle size is 0.7-1.5mm, and thickness is 700mm.
This experiment adopts the online turbidimeter of U.S. Hach-1720 to come the variation of water of continuous monitoring filter back water, and regulate the filtering velocity that flows through filter material layer by spinner-type flowmeter, reflect the head loss changing conditions of whole filtration cycle of inner filtering layer by the head meter, thereby effectively the operation conditions of filtering basin of the present invention is made comprehensive assessment.
From Fig. 2 as seen, quartz sand filter media remains on about 75% the removal efficient of natural raw water turbidity, and after the filtration cycle reached 24 hours, it went turbid efficient that significant decline can take place.
From Fig. 3 as seen, quartz sand filter media can keep filter back water quality basicly stable in 4-5 hour, but along with the prolongation of filtration time, its filter back water turbidity begins continuous rising, illustrate that filter back water quality begins to worsen, and must stop filtration, carries out back flushing.
What Fig. 4 was represented is the changing conditions of quartz sand filter media layer filtering basin and the embodiment of the invention 1 filtering basin filtering velocity in whole filtration cycle, comparatively speaking, the filtering velocity decline scope of quartz sand filter media layer is faster, this explanation ceramic filter material keeps the ability of even filtering velocity stronger, filtration cycle is longer, water consumption rate is low, remarkable in economical benefits.
Shown in Figure 5 is the clearance changing conditions of the embodiment of the invention 1 filtering basin.As seen from the figure, continuous maturation along with filter material layer, its clearance also constantly rises, in 57 hours, can both reach the removal efficient about 80%, this and quartz sand filter media can only keep 24 hours preferred removal efficiency to form distinct contrast, and the removal efficient of filtering basin of the present invention will be higher than quartz sand filter media about 5%.
Shown in Figure 6 is the regulating power that filtering basin of the present invention change raw water quality.As seen from the figure, when bigger fluctuation takes place in influent turbidity (50% rangeability), behind the embodiment of the invention 1 filtering basin, the water quality of filter back water still can keep stable, the rangeability of its delivery turbidity is about 5-8%, this explanation filtering basin of the present invention are resisted the very capable of impact load, keep stable effluent quality can play the effect of highly significant to water processing establishment.
Can see that from above experiment filtering basin of the present invention prolong filtration cycle ensureing the stable of Drinking Water water quality, reduce the aspects such as daily consumption of water processing establishment, all than traditional filtering basin more excellent performance are arranged.
Filtering basin of the present invention can be according to demand, every indexs such as the particle diameter of flexible ceramic filter material, proportion and distribution thereof.
Claims (3)
1, the ceramic filter material filtering basin that are used for water treatment, it comprises pond body (1), is covered with filtrate in the body of pond, and the below of filter material layer is provided with supporting layer (4), and the bottom of pond body (1) is provided with water outlet (5); It is characterized in that: filtrate is a ceramic filter material, and it is divided into two-layer, and it is the filtering material particle of 1.2-1.6mm that upper strata ceramic filter material (2) adopts particle diameter, and proportion is 0.8-1.8g/cm
3, it is the filtering material particle of 0.6-1.2mm that lower floor's ceramic filter material (3) adopts particle diameter, proportion is 1.8-2.5g/cm
3
2, filtering basin as claimed in claim 1 is characterized in that: the ceramic filter material total thickness is 600-800mm, and upper strata ceramic filter material (2) thickness is 400-500mm, and lower floor's ceramic filter material (3) thickness is 200-300mm.
3, filtering basin as claimed in claim 1 is characterized in that: supporting layer (4) is made up of pebbles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410013438 CN1283559C (en) | 2004-07-08 | 2004-07-08 | Ceramic filtering material filter tank for water treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410013438 CN1283559C (en) | 2004-07-08 | 2004-07-08 | Ceramic filtering material filter tank for water treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1594117A true CN1594117A (en) | 2005-03-16 |
| CN1283559C CN1283559C (en) | 2006-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410013438 Expired - Fee Related CN1283559C (en) | 2004-07-08 | 2004-07-08 | Ceramic filtering material filter tank for water treatment |
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| CN (1) | CN1283559C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935113A (en) * | 2010-09-26 | 2011-01-05 | 武汉理工大学 | Method and device thereof for treating cascade adsorbed water by radiating lateral and vertical flows |
| CN103028278A (en) * | 2011-09-29 | 2013-04-10 | 同济大学 | Method for optimization selection of water treatment filter material |
| CN111453782A (en) * | 2019-01-21 | 2020-07-28 | 宝山钢铁股份有限公司 | Steel plant water treatment filter material and application thereof |
| CN112274979A (en) * | 2020-09-30 | 2021-01-29 | 倍杰特集团股份有限公司 | Pre-filter for resin oil removal equipment, water treatment filtering system and method |
| CN112919738A (en) * | 2021-01-28 | 2021-06-08 | 安徽拓水环境工程科技有限公司 | Assembly type deep bed filter system and working method thereof |
-
2004
- 2004-07-08 CN CN 200410013438 patent/CN1283559C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935113A (en) * | 2010-09-26 | 2011-01-05 | 武汉理工大学 | Method and device thereof for treating cascade adsorbed water by radiating lateral and vertical flows |
| CN103028278A (en) * | 2011-09-29 | 2013-04-10 | 同济大学 | Method for optimization selection of water treatment filter material |
| CN111453782A (en) * | 2019-01-21 | 2020-07-28 | 宝山钢铁股份有限公司 | Steel plant water treatment filter material and application thereof |
| CN111453782B (en) * | 2019-01-21 | 2022-07-19 | 宝山钢铁股份有限公司 | Steel plant water treatment filter material and application thereof |
| CN112274979A (en) * | 2020-09-30 | 2021-01-29 | 倍杰特集团股份有限公司 | Pre-filter for resin oil removal equipment, water treatment filtering system and method |
| CN112919738A (en) * | 2021-01-28 | 2021-06-08 | 安徽拓水环境工程科技有限公司 | Assembly type deep bed filter system and working method thereof |
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| Publication number | Publication date |
|---|---|
| CN1283559C (en) | 2006-11-08 |
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| C06 | Publication | ||
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| C14 | Grant of patent or utility model | ||
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hubei Zhongbi Environmental Protection Technology Co., Ltd. Assignor: Wuhan University of Technology Contract record no.: 2010420000160 Denomination of invention: Ceramic filtering material filter tank for water treatment Granted publication date: 20061108 License type: Exclusive License Open date: 20050316 Record date: 20100914 |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061108 Termination date: 20120708 |