CN101732900A - Radiation side direction stream cascade stage fine filtering method and device thereof - Google Patents
Radiation side direction stream cascade stage fine filtering method and device thereof Download PDFInfo
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- CN101732900A CN101732900A CN200810197607A CN200810197607A CN101732900A CN 101732900 A CN101732900 A CN 101732900A CN 200810197607 A CN200810197607 A CN 200810197607A CN 200810197607 A CN200810197607 A CN 200810197607A CN 101732900 A CN101732900 A CN 101732900A
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Abstract
The invention discloses a radiation side direction stream cascade stage fine filtering method and a device thereof. The method comprises the following steps: the filter mode of a radiation type side direction stream multi-stage serial homogeneous filter bed structure is adopted, each stage of filtering layers is kept in a homogeneous structure, while a general reverse grain filter layer structure that filter material grain diameter at each stage of the filtering layers is decreased from great to little along water flow direction is adopted, namely different size grading is adopted to lead the intercepting sewage flow to be larger and more uniform. The device comprises radiation type side direction stream cascade stage filter tanks (3, 4) which are arranged from a central water inlet pipe (1) to each water outlet end; filter material layers (5, 6) with different grain sizes and a bearing layer (9) are arranged in the cascade stage filter tanks; and distributed water distributing holes (11) are arranged on the wall of a first stage of water outlet chamber.Compared with the traditional vertical stream filter form, the filter device effectively utilizes the largest filtering layer volume of the intercepting sewage flow as soon as possible, improves sewage intercepting efficiency of the whole filtering layer, and reduces the height of the whole filtering device, thus being beneficial for collocation with other treatment processes to prepare into integrated water treatment devices.
Description
Technical field
The present invention relates in natural former water and industrial cycle water treatment technology, special in radiation side direction stream cascade stage fine filtering method and device thereof in the water treatment process for purifying under the lower condition of earth surface water source raw water turbidity.
Background field
In the engineering practice of water treatment, traditionally annual winter-spring season temperature and all lower surface water of turbidity are called low temperature and low turbidity water both at home and abroad, change low temperature and low turbidity water is one of difficult problem of water supply purification processing always.If adopt conventional treatment technology can't reach drinking water standard, and the throwing amount way of the increase coagulant that adopts traditionally, it is little not only to produce effects, and brings serial problems such as the medicine consumption is high, sludge output is big, therefore is badly in need of improving.
Traditional filter type adopts the single or multiple lift filtrate vertically to flow to the water outlet form, can't realize anti-completely granularity filtration (promptly descending) along water inlet direction particle diameter of filter medium, layer phenomenon very easily appears mixing, both reduced effective holding filth capacity of filtering layer, difficulty when having increased backwash again makes that the work period of filter shortens, the system water consumption increases, water quality deterioration.Therefore need new filtered version to overcome these problems.
Summary of the invention
The objective of the invention is in order to overcome the defective of prior art, the radiation side direction stream cascade stage fine filtering method and the device thereof of a kind of low cost, less energy consumption, effluent quality consumption is provided.
One of the present invention's the radiant type side direction stream cascade stage fine filtering method with water treatment is achieved in that this method is to adopt radiant type lateral flow multi-stage series connection homogeneous filter bed structure filtered version, every grade of filtering layer keeps homogeneous texture, and filtering layer particle diameter of filter medium at different levels are along the descending overall anti-granularity structure of filtering layer of water (flow) direction, also promptly adopted different size grading, make the amount of damming of every lattice filtering layer bigger more even, effluent quality is better.
The present invention's two the radiant type side direction stream cascade stage fine filtering device with water treatment is achieved in that described radiant type lateral flow string fine filtering device comprises from the center water inlet pipe and is provided with radiant type side direction stream cascade stage filtering ponds to each water side, is provided with varigrained filter material layer and supporting layer in the tandem filtering ponds; Filter out in the first order and to be provided with the distribution water distributing pore on the hydroecium wall.Described filter material layer adopts porous pottery material or quartz sand and anthracite.
This filter is compared with traditional filter form that vertically flows through, effectively utilized the filtering layer volume of holding filth capacity maximum as far as possible, improved the dirty efficient of cutting of whole filtering layer, and reduced the height of whole filter, help arranging in pairs or groups, be prepared into integrated water treatment equipment with other treatment process.
Simultaneously, this filter solves the blockage problem that the conventional quartz sand filtering material occurs between continuous operating period, for subsequent technique lightens the load, thereby in this filter tank, can reach the effect (tradition) of high-rate fitration with littler thickness of filter bed and higher filtering velocity condition, satisfy the leading indicator requirement of strict national drinking water effluent quality, obtain desirable technology and economic benefit.The backwash system of this multi-level fine filter also has its advantage, can wash separately and does not interfere with each other between level and the level, and the required water consumption of every grade of filtrate flushing is all fewer like this, has saved power consumption water in a large number and has consumed.And the impurity holding filth capacity distribution situation that this lateral flow water intake mode is brought also more helps filtrate backwash from bottom to top.In addition, when raw water quality is relatively good, can reduce progression, energy savings easily.In natural former water and industrial water supply filtration treatment technology, domesticly do not see this kind form.
Description of drawings
Fig. 1 is a radiant type side direction stream cascade stage fine filtering schematic representation of apparatus of the present invention,
Fig. 2 is the vertical view of Fig. 1.
Among the figure: the 1-water inlet pipe, the former hydroecium of 2-, 3,4-tandem filtering ponds, 5, the 6-filter material layer, 7, first, second level of 8-filters out hydroecium, the 9-supporting layer, 10-filters out water pipe, 11-distribution water distributor, 12-backwash water inlet pipe, 13, first, second grade of 14-backwash rhone, 15-backwash main sewer.
The specific embodiment
The present invention is further described below in conjunction with accompanying drawing, among Fig. 1,2, a kind of radiation side direction stream cascade stage fine filtering method, it is characterized in that this method is to adopt radiant type lateral flow multi-stage series connection homogeneous filter bed structure filtered version, every grade of filtering layer keeps homogeneous texture, and filtering layer particle diameter of filter medium at different levels has also promptly adopted different size grading along the descending overall anti-granularity structure of filtering layer of water (flow) direction, make the amount of damming of every lattice filtering layer bigger more even, effluent quality is better.
Described radiant type lateral flow string fine filtering device comprises from center water inlet pipe 1 and is provided with radiant type side direction stream cascade stage filtering ponds 3,4 to each water side, is provided with varigrained filter material layer 5,6 and supporting layer 9 in the tandem filtering ponds 3,4; Filter out in the first order and to be provided with distribution water distributing pore 11 on the hydroecium wall.Described filter material layer 5,6 adopts porous pottery material or quartz sand and anthracite.
The inventive method embodiment 1: former water is in elevator pump is promoted to background radiation formula cascade stage fine filtering device, and this device adopts porous haydite as filtrate, utilizes the seal-off pressure formula to filter and the lateral flow water intake mode, and filtering velocity is 30m/h.This device is divided into 2 parts of symmetry, and every part is divided into 3 sections again, can guarantee that every grade of filter material layer can both obtain abundant backwash, has also saved energy consumption simultaneously.The concrete grating of these 3 sections inner filtering layers is: first section particle diameter is 1.25-1.6mm, and laying depth is 400mm; Second section particle diameter is 0.9-1.25mm, and laying depth is 250mm; The 3rd section particle diameter is 0.8-1.25mm, and laying depth is 200mm.The backwash water inlet flows into from the water distribution eyelet of tank base, and reflexive wash-water gutter flows out behind the whole from bottom to top flushing filtering layer.Backwash can be adopted single lattice flushing, also can wash simultaneously by symmetrical two lattice, and backwash rate is 12L/s.m2, and washing length is 5 minutes.
The inventive method embodiment 2: former water is in elevator pump is promoted to background radiation formula cascade stage fine filtering device, and the quartz sand of this device employing different-grain diameter and anthracite utilize the seal-off pressure formula to filter and the lateral flow water intake mode as filtrate, and filtering velocity is 25m/h.This device is divided into 2 parts of symmetry, and every part is divided into 3 sections again, can guarantee that every grade of filter material layer can both obtain abundant backwash, has also saved energy consumption simultaneously.The concrete grating of these 3 sections inner filtering layers is: first section filling ANTHRACITE FILTER MEDIA, and particle diameter is 1.25-1.6mm, laying depth is 400mm; Second section filling quartz sand filter media, particle diameter is 0.9-1.25mm, laying depth is 250mm; The 3rd section filling quartz sand filter media, particle diameter is 0.6-0.8mm, laying depth is 150mm.The backwash water inlet flows into from the water distribution eyelet of tank base, and reflexive wash-water gutter flows out behind the whole from bottom to top flushing filtering layer.Backwash can be adopted single lattice flushing, also can wash simultaneously by symmetrical two lattice, and backwash rate is 15L/s.m2, and washing length is 4 minutes.
Claims (3)
1. radiation side direction stream cascade stage fine filtering method, it is characterized in that this method is to adopt radiant type lateral flow multi-stage series connection homogeneous filter bed structure filtered version, every grade of filtering layer keeps homogeneous texture, and filtering layer particle diameter of filter medium at different levels are along the descending overall anti-granularity structure of filtering layer of water (flow) direction, also promptly adopt different size grading, make the amount of damming of every lattice filtering layer bigger more even, effluent quality is better.
2. radiation side direction stream cascade stage fine filtering device, it is characterized in that: described radiant type lateral flow string fine filtering device comprises from center water inlet pipe (1) and is provided with radiant type side direction stream cascade stage filtering ponds (3,4) to each water side, is provided with varigrained filter material layer (5,6) and supporting layer (9) in the tandem filtering ponds (3,4); Filter out in the first order and to be provided with distribution water distributing pore (11) on the hydroecium wall.
3. radiation side direction stream cascade stage fine filtering device according to claim 2 is characterized in that: described filter material layer (5,6) adopts porous pottery material or quartz sand and anthracite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810197607A CN101732900A (en) | 2008-11-12 | 2008-11-12 | Radiation side direction stream cascade stage fine filtering method and device thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810197607A CN101732900A (en) | 2008-11-12 | 2008-11-12 | Radiation side direction stream cascade stage fine filtering method and device thereof |
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| CN101732900A true CN101732900A (en) | 2010-06-16 |
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| CN200810197607A Pending CN101732900A (en) | 2008-11-12 | 2008-11-12 | Radiation side direction stream cascade stage fine filtering method and device thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102451580A (en) * | 2010-10-25 | 2012-05-16 | 湖北中碧环保科技有限公司 | Water treatment drawer-type filtering method and device thereof |
| CN103432785A (en) * | 2013-08-30 | 2013-12-11 | 佛山市水业集团有限公司 | Lateral flow rapid filter |
| CN108654154A (en) * | 2018-06-04 | 2018-10-16 | 广东科学技术职业学院 | Lateral flow filter tank |
| CN110054268A (en) * | 2019-04-11 | 2019-07-26 | 湖南锦佳环保科技有限公司 | A kind of sewage disposal system |
-
2008
- 2008-11-12 CN CN200810197607A patent/CN101732900A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102451580A (en) * | 2010-10-25 | 2012-05-16 | 湖北中碧环保科技有限公司 | Water treatment drawer-type filtering method and device thereof |
| CN103432785A (en) * | 2013-08-30 | 2013-12-11 | 佛山市水业集团有限公司 | Lateral flow rapid filter |
| CN108654154A (en) * | 2018-06-04 | 2018-10-16 | 广东科学技术职业学院 | Lateral flow filter tank |
| CN110054268A (en) * | 2019-04-11 | 2019-07-26 | 湖南锦佳环保科技有限公司 | A kind of sewage disposal system |
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Application publication date: 20100616 |