CN104623935A - Small rapid filter equipped with air and water backwash system and filtering and backwashing technology thereof - Google Patents
Small rapid filter equipped with air and water backwash system and filtering and backwashing technology thereof Download PDFInfo
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- CN104623935A CN104623935A CN201310543532.5A CN201310543532A CN104623935A CN 104623935 A CN104623935 A CN 104623935A CN 201310543532 A CN201310543532 A CN 201310543532A CN 104623935 A CN104623935 A CN 104623935A
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Abstract
The invention discloses a small rapid filter equipped with an air and water backwash system. The small rapid filter comprises a filter body and is characterized in that the filter body is provided with a filter material layer, and the bottom of the filter material layer is provided with air and water distribution pipes which are also used as water collecting devices and water and air distribution devices for air and water backwashing; and the top and side wall of each water and air distribution pipe are provided with backwashing air holes, and each pipe bottom is provided with backwashing water holes. From the bottom to the top, the bottom of the filter is respectively provided with a lower supporting layer, water and air distribution pipes, an upper supporting layer and a filter material layer. One side of the filter is communicated with an intake canal, and the other side is communicated with the a water and air distribution chamber through the water and air distribution pipes; one end of the intake canal is provided with a water inlet pipe, and the other end is provided with a backwashing drainage pipe; and one end of the water and air distribution chamber is provided with a backwashing air pipe and a backwashing water pipe, and the other end is provided with a water outlet pipe. In operation, the fast filter reaches a filtration rate of 8 m/h, filtration period of 24-48 h, and water treatment amount of 700 m<3>/d. According to water supply demand, multi-group fast filters can be arranged for parallel operation, and the capacity expanding is convenient with basically no building work amount.
Description
Technical field
The present invention relates to water treatment field of purification, be specifically related to a kind of be equipped with air-water backwashing system small-sized rapid filter and filtration and backwash technique, can be applicable to the filtration water-purifying process of water system on a small scale.
Background technology
Along with health ministry and the new standard promulgation of Ministry of Construction's Drinking Water water quality, domestic each water undertaking all using raising effluent quality as cardinal task.In the process for purifying of drinking water, filter and be not only the turbidity reducing water further, and the turbidity with water reduces and is partially removed by Organic substance in water, bacterium and even virus etc., it is the important measures improving effluent quality, ensure water hygiene safety.The backwash in filter tank is the committed step in whole filtration engineering, and good douching technique effectively can not only remove the deposition in filtering layer, makes the filtering function that filter tank recovers desirable, and can extend filter cycle, saving flushing water, reduction energy consumption.
Samll cities and towns' water supply is the important component part of Small town economy and social sustainable development.And at present, the problem such as be on the rise for pollution of waterhead in the water system of China's Small Towns, construction of water supply facilities imperfection, water supply scale are less than normal, country proposes the construction accelerating samll cities and towns' water system, ensure the water quality safety of drinking water, the present invention should supply water for samll cities and towns the feature of small scale, invent a kind of integrated technique being applicable to samll cities and towns' filtration water-purifying process, there is floor space little, substantially civilwork engineering quantity is not had, the dilatation of water supply scale is simple and easy to do, thus ensures the fast development of samll cities and towns' water system.
Summary of the invention
An object of the present invention is to provide a kind of small-sized rapid filter being equipped with air-water backwashing system, samll cities and towns' needs that are intensive, water system on a small scale can be met.
To achieve these goals, technical scheme of the present invention is as follows: a kind of small-sized rapid filter being equipped with air-water backwashing system, comprise filter tank main body, it is characterized in that being provided with bottom filter material layer, filter material layer in this filter tank main body being provided with water and air distributing pipe, this water and air distributing pipe is simultaneously as the water and air distributing device of captation and air-water backwashing, water and air distributing Guan Guanding and sidewall have backwash pore, have backwash water hole at the bottom of pipe.Supporting layer is set respectively from bottom to top bottom filter tank, water and air distributing pipe, upper supporting layer, filter material layer, side, described filter tank is communicated with inlet channel, and opposite side is communicated with water and air distributing room by water and air distributing pipe, described inlet channel one end arranges water inlet pipe, the other end arranges backwash drainpipe, and one end, described water and air distributing room arranges backwash tracheae and backwash water pipe, and the other end sets out water pipe.
Another object of the present invention is to provide a kind of filtration and backwash technique of small-sized rapid filter, can meet samll cities and towns' needs that are intensive, water system on a small scale.
To achieve these goals, technical scheme of the present invention is as follows: a kind of filtration of small-sized rapid filter and backwash technique, it is characterized in that: during filtration, backwash drainpipe is closed, and backwash water pipe and backwash tracheae are closed, and before filter, water enters inlet channel from water inlet pipe, filter tank is overflowed into by washed-out sand rhone, after filter material layer, supporting layer, enter water and air distributing room by water and air distributing pipe, by the outlet pipe water outlet of water and air distributing room; During backwash, outlet pipe is closed, water inlet pipe is closed backwashing water self counter flushing water pipe and is entered water and air distributing room, air compressor machine compressed air self counter flushing tracheae enters water and air distributing room, backwashing water and backwash gas are after water and air distributing tube section forms stable gas-water interface face, and be evenly distributed in filter material layer by the water and air distributing hole of water and air distributing pipe, backwashing wastewater falls into inlet channel by washed-out sand rhone, discharged by drainpipe, backwash waste gas directly overflows.
Small-sized rapid filter of the present invention effectively can remove the turbidity of pending water, meets " Code for design of outdoor water supply engineering " requirement about filter tank design parameter, ensures the operational reliability of water system.Be equipped with the small-sized rapid filter of air-water backwashing system, developing result is better, and filter cycle is longer, and washing water quantity is less.Particularly so small-sized rapid filter is very suitable for the construction of the small-scale water system such as samll cities and towns, rural area, and the water supply quality in guarantee samll cities and towns, rural area is significant.The invention has the advantages that the water and air distributing device as captation and air-water backwashing while of adopting water and air distributing pipe, samll cities and towns' needs that are intensive, water system on a small scale can be met.
Accompanying drawing explanation
Fig. 1 is installation sectional view and the filter tank floor plan that the connection of water and air distributing room starved by water and air distributing pipe of the present invention.
Fig. 2 is the profile in filter tank.
Fig. 3 is the structural representation of water and air distributing pipe.
Fig. 4 is the A-A sectional view of Fig. 3.
Fig. 5 is the installation sectional view of water and air distributing pipe.
Detailed description of the invention
As depicted in figs. 1 and 2, a kind of small-sized rapid filter being equipped with air-water backwashing system, comprise filter tank main body 1, it is characterized in that being provided with in this filter tank main body bottom filter material layer 5, filter material layer 5 and be provided with water and air distributing pipe 3, this water and air distributing pipe is simultaneously as the water and air distributing device of captation and air-water backwashing, water and air distributing Guan Guanding and sidewall have backwash pore, have backwash water hole at the bottom of pipe.This rapid filter adopts water and air distributing pipe as the water and air distributing device of air-water backwashing.The filter area of rapid filter is 4m
2, planar dimension is 1.00m × 4.00m, establishes supporting layer 2 under 0.21m from bottom to top respectively, water and air distributing pipe 3, upper supporting layer 4,1.20m filter material layer 5 bottom filter tank.Rapid filter is also equipped with an inlet channel 6, washed-out sand rhone 9 and a backwash water and air distributing room 10.Inlet channel 6 arranges the water inlet pipe 7 of a DN150 and the backwash drainpipe 8 of a DN200, and inlet channel 6 is connected with washed-out sand rhone 9, and DN200 backwash drainpipe 8 discharges backwashing wastewater.Water and air distributing room 10 arranges a DN100 outlet pipe 11, DN250 backwash water pipe 12, DN80 backwash tracheae 13, four DN40 distribution arms 16.Water and air distributing pipe 3 amounts to four, is arranged on supporting layer II, manages wide 12 ~ 15mm, tube hub spacing 230 ~ 270mm along filter tank main body 1 is parallel longitudinal.Single water and air distributing pipe is connected with water and air distributing room with a water hole interface 20 by the pore interface 21 of a DN40, and wherein pore interface is connected with backwash tracheae 13 by distribution arm 16, water hole interface and backwash cross current.This filter tank main body is also provided with overflow pipe 14 and enters sand hole 15.
Fig. 3 is the structural representation of water and air distributing pipe, described water and air distributing pipe 3 top is provided with air distribution hole 17, is provided with distributing hole 18 bottom water and air distributing pipe, and described water and air distributing pipe one end is provided with water hole interface 20 and pore interface 21, the other end is provided with shrouding, and shrouding is provided with shrouding air distribution hole 19.Described water and air distributing pipe Top section is trapezoidal, trapezoidal hypotenuse and horizontal angle is 40 ~ 50
o, described water and air distributing pipe bottom section is rectangle.The top of this water and air distributing pipe is trapezium structure, can increase it by bearing capacity.The top of described water and air distributing pipe is provided with a row side air distribution hole 22, the both sides of described water and air distributing pipe offer a row side air distribution hole 22 respectively, described side air distribution hole is arranged on Jin Ding slope place, described water and air distributing pipe side, is provided with two deploying water holes bottom water and air distributing pipe.For ensureing the uniformity of distributing hole water distribution, offer some assembly water holes along pipe range direction bottom this water and air distributing pipe, from water inlet end, aperture, described some assembly water holes increases gradually.
Distributing hole increases with water inlet end distance and increases, and its theoretical foundation is considered by following formula:
Wherein q is orifice flow; μ is overcurrent coefficient; A is orifice area; H is water and air distributing pipe port head; X is the distance between water and air distributing pipe port to aperture; L is the length of water and air distributing pipe; G is acceleration of gravity; K is constant.
Longer by the distance formula visible water and air distributing pipe port to aperture, orifice flow is less, therefore, with the increase of water and air distributing pipe port to the spacing in aperture, suitably increases port size and can increase water distribution uniformity, make orifice flow as far as possible evenly.
When rapid filter filters, before filter, water enters inlet channel (closedown of backwash drainpipe) from water inlet pipe, filter tank is overflowed into by washed-out sand rhone, after filter material layer, supporting layer, enter water and air distributing room by water and air distributing pipe, flow out rapid filter (DN250 backwash water pipe, DN40 gas-distribution pipe are closed) by the outlet pipe of water and air distributing room.During rapid filter backwash, backwashing water enters water and air distributing room from DN250 backwash water pipe, air compressor machine compressed air enters water and air distributing room (closedown of DN100 outlet pipe) from DN80 backwash tracheae, backwashing water and backwash gas are after the bread tube section of water and air distributing pipe forms stable gas-water interface face, be evenly distributed in filter material layer by the water and air distributing hole of bread pipe, backwashing wastewater falls into inlet channel by washed-out sand rhone, discharge rapid filter (50 water inlet pipes are closed) by DN200 drainpipe, backwash waste gas directly overflows.
In prior art, water factory adopts strainer head+water and air distributing room to realize water and air distributing mostly, is mainly used in larger water factory.The present invention adopts the water and air distributing pipe of special cross section form (adopting top domatic section structure, upper strata distribution, lower floor's water distribution), realizes stable gas-water interface face, is mainly used in the rapid filter transformation of old water factory and small-sized filter tank.The water and air distributing pipe of this completes the rear water collecting function of water of filter and the water and air distributing function of backwash simultaneously, and during filtration, water and air distributing pipe plays water collecting function; Water and air distributing function is played during backwash.
The present invention effectively can remove the turbidity of pending water, meets " Code for design of outdoor water supply engineering " requirement about filter tank design parameter, ensures the operational reliability of water system.When rapid filter runs, filtering velocity 8m/h, filter cycle, 24 ~ 48h, processed water yield 700m
3/ d.According to water requirements, rapid filter can arrange many sets in parallel operation, and dilatation is convenient, does not substantially have civilwork engineering quantity.
Claims (5)
1. one kind is equipped with the small-sized rapid filter of air-water backwashing system, comprise filter tank main body, it is characterized in that being provided with bottom filter material layer, filter material layer in this filter tank main body being provided with water and air distributing pipe, this water and air distributing pipe is simultaneously as the water and air distributing device of captation and air-water backwashing, water and air distributing Guan Guanding and sidewall have backwash pore, have backwash water hole at the bottom of pipe.
2. small-sized rapid filter as claimed in claim 1, it is characterized in that setting supporting layer respectively from bottom to top bottom filter tank, water and air distributing pipe, upper supporting layer, filter material layer, side, described filter tank is communicated with inlet channel, opposite side is communicated with water and air distributing room by water and air distributing pipe, and described inlet channel one end arranges water inlet pipe, and the other end arranges backwash drainpipe, one end, described water and air distributing room arranges backwash tracheae and backwash water pipe, and the other end sets out water pipe.
3. small-sized rapid filter as claimed in claim 1, it is characterized in that described water and air distributing pipe one end is provided with water hole interface and pore interface, the other end is provided with shrouding, and shrouding is provided with shrouding air distribution hole, and water and air distributing pipe is connected with water and air distributing room with water hole interface by pore interface.
4. small-sized rapid filter as claimed in claim 2, is characterized in that water and air distributing pipe 3 amounts to four, is arranged on lower supporting layer, manages wide 12 ~ 15mm, tube hub spacing 230 ~ 270mm along filter tank main body is parallel longitudinal.
5. one kind is equipped with filtration and the backwash technique of the small-sized rapid filter of air-water backwashing system, it is characterized in that: during filtration, backwash drainpipe is closed, backwash water pipe and backwash tracheae are closed, before filter, water enters inlet channel from water inlet pipe, overflows into filter tank, by washed-out sand rhone after filter material layer, supporting layer, water and air distributing room is entered, by the outlet pipe water outlet of water and air distributing room by water and air distributing pipe; During backwash, outlet pipe is closed, water inlet pipe is closed backwashing water self counter flushing water pipe and is entered water and air distributing room, air compressor machine compressed air self counter flushing tracheae enters water and air distributing room, backwashing water and backwash gas are after water and air distributing pipe forms stable gas-water interface face, and be evenly distributed in filter material layer by the water and air distributing hole of water and air distributing pipe, backwashing wastewater falls into inlet channel by washed-out sand rhone, discharged by drainpipe, backwash waste gas directly overflows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310543532.5A CN104623935B (en) | 2013-11-06 | 2013-11-06 | It is equipped with the small-sized rapid filter and its filtering and backwash technique of air-water backwashing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310543532.5A CN104623935B (en) | 2013-11-06 | 2013-11-06 | It is equipped with the small-sized rapid filter and its filtering and backwash technique of air-water backwashing system |
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| CN104623935A true CN104623935A (en) | 2015-05-20 |
| CN104623935B CN104623935B (en) | 2017-07-21 |
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| CN201310543532.5A Active CN104623935B (en) | 2013-11-06 | 2013-11-06 | It is equipped with the small-sized rapid filter and its filtering and backwash technique of air-water backwashing system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104860480A (en) * | 2015-05-22 | 2015-08-26 | 浙江海洋学院 | Large-scale eutrophication degradation method |
| CN107055771A (en) * | 2017-06-02 | 2017-08-18 | 上海同济环境工程科技有限公司 | A kind of water and air distributing system and its backwash technique |
| CN110124378A (en) * | 2019-06-17 | 2019-08-16 | 河南蔚蓝水处理技术有限公司 | A kind of 360 degree of filter blocks |
| CN110124385A (en) * | 2019-06-17 | 2019-08-16 | 河南蔚蓝水处理技术有限公司 | A kind of filter tank |
| CN115925015A (en) * | 2023-02-17 | 2023-04-07 | 上海水业设计工程有限公司 | Water and gas distribution system and sewage filtering room |
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| CN201257323Y (en) * | 2008-07-21 | 2009-06-17 | 张海波 | Fiber filter material high-speed filter |
| CN201361473Y (en) * | 2009-01-16 | 2009-12-16 | 宁波德安生态环保工程有限公司 | Circular fiber filtration pond |
| CN201558585U (en) * | 2009-11-23 | 2010-08-25 | 厦门飞华环保器材有限公司 | Filter tank structure |
| CN102407037A (en) * | 2011-09-21 | 2012-04-11 | 成都碧水齐力市政工程有限公司 | Air-water backwash filter and air-water backwash method |
| US8871093B2 (en) * | 2012-01-12 | 2014-10-28 | Xylem Water Solutions Zelienople Llc | Filter media retainer assembly |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201257323Y (en) * | 2008-07-21 | 2009-06-17 | 张海波 | Fiber filter material high-speed filter |
| CN201361473Y (en) * | 2009-01-16 | 2009-12-16 | 宁波德安生态环保工程有限公司 | Circular fiber filtration pond |
| CN201558585U (en) * | 2009-11-23 | 2010-08-25 | 厦门飞华环保器材有限公司 | Filter tank structure |
| CN102407037A (en) * | 2011-09-21 | 2012-04-11 | 成都碧水齐力市政工程有限公司 | Air-water backwash filter and air-water backwash method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104860480A (en) * | 2015-05-22 | 2015-08-26 | 浙江海洋学院 | Large-scale eutrophication degradation method |
| CN107055771A (en) * | 2017-06-02 | 2017-08-18 | 上海同济环境工程科技有限公司 | A kind of water and air distributing system and its backwash technique |
| CN107055771B (en) * | 2017-06-02 | 2023-03-31 | 上海同济环境工程科技有限公司 | Water and gas distribution system and backwashing process thereof |
| CN110124378A (en) * | 2019-06-17 | 2019-08-16 | 河南蔚蓝水处理技术有限公司 | A kind of 360 degree of filter blocks |
| CN110124385A (en) * | 2019-06-17 | 2019-08-16 | 河南蔚蓝水处理技术有限公司 | A kind of filter tank |
| CN110124385B (en) * | 2019-06-17 | 2023-10-13 | 河南蔚蓝水处理技术有限公司 | Filter tank |
| CN110124378B (en) * | 2019-06-17 | 2024-06-04 | 河南蔚蓝水处理技术有限公司 | 360-Degree filter brick |
| CN115925015A (en) * | 2023-02-17 | 2023-04-07 | 上海水业设计工程有限公司 | Water and gas distribution system and sewage filtering room |
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| CN104623935B (en) | 2017-07-21 |
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