CN210367356U - Biological slow filtration equipment suitable for small centralized water supply water plant in mountain area - Google Patents
Biological slow filtration equipment suitable for small centralized water supply water plant in mountain area Download PDFInfo
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- CN210367356U CN210367356U CN201921282788.4U CN201921282788U CN210367356U CN 210367356 U CN210367356 U CN 210367356U CN 201921282788 U CN201921282788 U CN 201921282788U CN 210367356 U CN210367356 U CN 210367356U
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Abstract
The utility model relates to a biological slow filtration equipment that suitable mountain area small-size centralized water supply water factory, including high flush tank, slow filtering pond, three way water level regulator, porous water distributor, rain shelter is installed at slow filtering pond top, slow filtering pond internal fixation be provided with the bearing layer place the filter bed above the bearing layer, filter bed top is for going up the water zone, and the water inlet of water collecting zone bottom water piping connection three way water level regulator is passed through, three way water level regulator's water inlet is higher than filter bed top surface place plane, three way water level regulator's ventilative mouth is up, three way water level regulator's delivery port leads to pipe connection clean water basin. The utility model has the advantages that: the three-way water level regulator can keep a certain upper water-covering layer in the biological slow filter to ensure that the biological filter membrane cannot deteriorate or die. The rain shelter can prevent rain and other pollutants from entering the slow filtering device to pollute water and not affect the illumination effect.
Description
Technical Field
The utility model relates to an equipment technical field is strained slowly to biology, specific biological equipment of straining slowly that says so a small-size concentrated water supply water factory in suitable mountain area.
Background
The traditional conventional water treatment process water treatment structure is complex in construction, difficult in operation and maintenance, and not suitable for the construction of water plants in rural areas, and managers need to have relatively high cultural degree. The biological slow filtration technology has the advantages of simple construction, locally available filter materials, low investment cost, simple daily operation and maintenance and the like. The biological slow filtration water purification technology purifies mountain stream water, spring water and weir water (the turbidity needs to be lower than 20 NTU), and the water can reach the sanitary standard of drinking water after proper disinfection (GB 5749-.
The biological slow filtration technology for removing the pollutants in the raw water mainly has the functions of absorbing, utilizing and converting the pollutants by microorganisms in a biological membrane except the physical interception, adsorption and filtration of a filter material, so that the microbial membrane formed on the surface layer of the filter material is the key of the technology. Engineering practices show that in rural areas of China, particularly in southwest mountainous areas, water sources are greatly influenced by seasonality, and the situations of unstable water quantity and poor water quality of the water sources are easy to occur.
The existing biological slow filtration equipment mainly has the following defects:
1. the function of covering water depth is neglected in some brick slow filter tanks and devices, and because rural drinking water engineering management is untimely, the biofilm on the filter material surface layer is finally caused to deteriorate or die due to water shortage, if the engineering operation needs to be recovered, the operation cost is long, and the continuous operation of the biological slow filter tank cannot be ensured. On the other hand, the water level is manually regulated and controlled, all-weather supervision is needed, and the management cost is increased;
2. the microbial action of the slow filtration device requires enough dissolved oxygen in water, and many slow filtration devices are closed and cannot realize the oxygen increasing process of water without an oxygen trapping unit; moreover, a plurality of bricks are built or the slow filtering device is not maintained, so that a non-closed rain sheltering device is urgently needed, the illumination can be ensured, and pollutants can be prevented from entering the slow filtering device;
3. lack of disinfection function;
therefore, during the membrane hanging and operation, a certain water covering depth needs to be maintained above the filtering layer of the slow filtering device to keep the activity of the biological membrane, an ultraviolet disinfection unit which can regulate and control the intensity according to the water quantity needs to be arranged, and a protective measure which can provide illumination and prevent pollutants from entering the biological slow filtering device is also needed.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned prior art not enough, the utility model provides a biological slow filtration equipment that suitable mountain area small-size concentrated water supply water factory.
The utility model provides a pair of biological slow filtration equipment that suitable small-size centralized water supply water works in mountain area is realized through following technical scheme:
a biological slow filtration device suitable for small centralized water supply water plants in mountain areas comprises a high-position water tank, a slow filter, a three-way water level regulator, a porous water distribution pipe and a rain shelter, wherein the high-position water tank is connected with the porous water distribution pipe arranged at the top of the slow filter through a water inlet pipe, the rain shelter is arranged at the top of the slow filter, a bearing layer is fixedly arranged in the slow filter, a filter material layer is arranged on the bearing layer, an upper water covering area is arranged above the filter material layer, a water covering overflow pipe is arranged at the position, where the side wall of the slow filter is arranged, of the slow filter, a water collecting area is formed between the bearing layer and the bottom of the slow filter, the bottom of the water collecting area is connected with a water inlet of the three-way water level regulator through a water pipe, a water inlet of the three-way water level regulator is higher than the plane where the top surface of the filter material layer is, the water outlet of the clean water tank is connected with a flowmeter, the water flow from the clean water tank passes through an ultraviolet disinfection device, the top surface of the rain shelter is a transparent film, and the side surface of the rain shelter is a filter screen.
And the water inlet pipe is provided with a flow control valve.
And a water tank overflow pipe is arranged on the side wall of the upper part of the high-level water tank.
The lateral wall of the water collecting area is connected with a drain valve.
The filter material layer is river sand, and the grain diameter of the river sand is within the range of 0.3-1.0 mm.
The utility model has the advantages that:
1. the three-way water level regulator is purely physical, does not need an electronic water level controller and does not need electric energy loss. Can ensure that a certain upper water covering layer is still kept in the biological slow filter under the condition of unstable water inlet amount so as to ensure that the biological filter membrane cannot deteriorate or die.
2. The rain shelter can prevent rain and other pollutants from entering the slow filtering device to pollute water without influencing the illumination effect, prevents the pollution to equipment caused by multiple fallen leaves and animals in mountainous areas, and is favorable for the continuous operation of the equipment. Meanwhile, the utility model has the function of ventilation.
3. The ultraviolet disinfection device is arranged, and the flow information is fed back through the flowmeter to regulate and control the ultraviolet disinfection intensity in real time, so that unnecessary power consumption is avoided.
4. Set up high flush tank, its advantage that usable mountain area relief is uneven is settled, and this mode flows into through gravity automatically and carries out water treatment in the slow filtering pond, has saved and has got into the device water pump of straining slowly, guarantees to have enough water supply, and unnecessary water flows out through the overflow, and economy is reliable, reduces the running cost.
5. The structure is convenient to disassemble, the manufacturing cost is lower than that of a bricklaying structure, and the construction and installation can be simplified. In the aspect of operation, the method reduces the uncontrollable factors of microbial action, reduces the consumption of electric energy as far as possible, simplifies management, basically does not need manual guard and ensures safe drinking water.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of the three-way water level regulator of the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely by the following embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
A biological slow filtration device suitable for small centralized water supply water plants in mountain areas comprises a high-position water tank 1, a slow filter 2, a three-way water level regulator 3, a porous water distribution pipe 6 and a rain shelter 7, wherein the high-position water tank 1 is connected with the porous water distribution pipe 6 arranged at the top of the slow filter through a water inlet pipe 5, the rain shelter 7 is arranged at the top of the slow filter 1, a bearing layer 8 is fixedly arranged in the slow filter 1, a filter material layer 9 is arranged on the bearing layer 8, an upper water covering area 10 is arranged above the filter material layer 9, a water covering overflow pipe 11 is arranged on the side wall of the slow filter at the water covering area, a water collecting area 12 is formed between the bearing layer and the bottom of the slow filter, the bottom of the water collecting area 12 is connected with a water inlet 31 of the three-way water level regulator 3 through a water pipe, the water inlet 31 of the three-way water level regulator is higher than the plane where the top surface, the water outlet 32 of the three-way water level regulator is connected with a clean water tank 13 through a water pipe, the water outlet of the clean water tank is connected with a flowmeter 14, the discharged water flows through an ultraviolet disinfection device 15, the top surface of the rain shelter 7 is a transparent film 71, and the side surface of the rain shelter is a filter screen 72. The ventilating port 33 is provided with a ventilating filter screen.
Further, set up flow control valve 16 on inlet tube 5, flow control valve 16 application choke valve controls the filtration rate through controlling the flow of intaking and is in 0.1~0.4m/h within range, guarantees certain dwell time to the effect of getting rid of organic matter, ammonia nitrogen and turbidity.
Furthermore, a water tank overflow pipe 17 is arranged on the side wall of the upper part of the high-level water tank 1. Its advantage of usable mountain area relief of high-order water tank 1 is uneven is settled, flows into through gravity automatically and carries out water treatment in the slow filtering pond, has saved and has got into the device water pump of straining slowly, guarantees to have enough water supply, and unnecessary water flows out through water tank overflow pipe 17, and economy is reliable, reduces the running cost.
Furthermore, the water-covered overflow pipe 11 is arranged, if the algae floating on the water surface is not discharged, the function of the algae is weakened and even can be rotten, the algae floating on the water surface can shield sunlight, so that the illumination can not reach the surface of the filter layer, the water-covered overflow pipe 11 needs to be arranged to discharge redundant floating algae, the filter tank can become a continuous culture system of the algae, and the position of the water-covered overflow pipe 11 needs to be slightly higher than the height of the three-way water level regulator.
Further, a drain valve 18 is connected to the side wall of the water collecting area 12.
Furthermore, the thickness of the filter material layer 9 is 1 meter, the filter material is river sand, and the grain size of the river sand is within the range of 0.3-1.0 mm. The water flow direction passes through the filter bed from top to bottom in order to achieve effective filtration of the passing water flow.
Further, the supporting layer 8 is used for preventing the filter material in the filter material layer from blocking the water outlet, is arranged below the filter material layer, the water outlet is positioned at the water collecting area, and water passing through the filter material layer enters the water collecting area and is prevented from falling into the water collecting area. The thickness of the bearing layer is 0.4m, and the bearing layer is composed of gravels arranged from small to large with the particle size of 1-32 mm. The bottom of the supporting layer can be supported by a thicker filter screen.
Furthermore, in order to prevent the water shortage in the tank caused by unstable water source and influence the normal life activity of the biomembrane microorganisms, a three-way water level regulator is arranged to maintain the 0.4m overlying water depth of the slow filter. The filtered water is collected in the water collecting area, guided upwards to the height of the position of the three-way water level regulator and then discharged. When the water level of the initial slow filter tank does not reach the position of the three-way water level regulator, the principle of the U-shaped pipe is adopted, and the slow filter tank is only in water inlet state and is not in water outlet state. When the water level of the slow filter tank reaches the position of the three-way water level regulator, water can flow out through the water outlet, the stability of the water level is guaranteed, if the water cut-off phenomenon occurs again, a certain water depth can still be kept, and the biofilm of the slow filter tank is prevented from being dead due to water shortage.
The adjusting principle of the three-way water level adjuster is shown in fig. 2, when the water level height of the upper water covering area does not reach the water level A of the water inlet 31, the slow filter tank and the DAC form a U-shaped pipe principle, the water level of the upper water covering area is consistent with the water level in the AD, water cannot flow out at the moment, and the water level in the slow filter tank is lifted.
When the water level in the overlying water area reaches the point A and the water outlet amount is increased, the outlet water flows into the water level point C of the ventilation opening 33 from the point A, but under the action of gravity, the water falls down and does not reach the water level point C, but flows out from the water level point B of the water outlet 32, so that the water is always kept on the water level A. After the process, the water cut-off can also maintain the water level height of the overlying water area.
The ventilation opening 33 plays a role of protecting the water level, and because E is at a lower position, if the ventilation opening 33 is not arranged, water in an upper water covering area can flow dry, so that the biological membrane is deteriorated or killed due to water shortage.
Furthermore, the rain shelter mainly prevents rain and other pollutants from entering the slow filtering device to pollute water and not affect the illumination. The upper part of the rain shelter is made of a transparent film to ensure enough illumination, and the periphery of the rain shelter is provided with a breathable filter screen with a net structure, so that pollutants can be prevented from entering the rain shelter. Linear algae is beneficial to the operation of biological slow filtration, where photosynthesis of algae supplies oxygen to the water, promoting the decomposition of aerobic organisms. The rain sheltering device needs to be arranged to be detachable, so that the sand on the surface of the filtering layer can be scraped conveniently.
Furthermore, investigation shows that a clean water tank for secondary storage arranged in rural areas is easy to cause secondary pollution of effluent, the effluent of the device flows through the ultraviolet disinfection device 15, and a flowmeter is additionally arranged before the effluent enters the ultraviolet disinfection device 15. The flowmeter and the ultraviolet disinfection device can be electrically connected with the controller, and the flow information is fed back by the flowmeter to regulate and control the ultraviolet disinfection intensity in real time.
Furthermore, the surface of the filter material is periodically scraped according to the quality of raw water and the running condition. When the filtering speed is lower than 0.1m/h or the removal of pollutants is not up to the standard, or when the filter bed is blocked, sand should be scraped immediately, a drain valve is opened to drain water, a sand layer with the surface layer of 1-2cm is scraped, and a new sand filter material is backfilled or filled to the designed height after cleaning, wherein the operation needs to consider microorganisms active in water and is completed in a short time as much as possible.
Furthermore, the porous water distribution pipe 6 is a water pipe with a plurality of holes.
The above-described embodiments are merely illustrative of embodiments of the present invention, which are described in detail and detail, but are not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (5)
1. The utility model provides a biological slow filtration equipment that suitable mountain area is small-size to concentrate water supply water works which characterized in that: the device comprises a high-level water tank, a slow filter, a three-way water level regulator, a porous water distribution pipe and a rain shelter, wherein the high-level water tank is connected with the porous water distribution pipe arranged at the top of the slow filter through a water inlet pipe, the rain shelter is arranged at the top of the slow filter, a bearing layer is fixedly arranged in the slow filter, a filter material layer is arranged on the bearing layer, an upper water covering area is arranged above the filter material layer, a water covering overflow pipe is arranged at the side wall of the slow filter at the water covering area, a water collecting area is formed between the bearing layer and the bottom of the slow filter, the bottom of the water collecting area is connected with a water inlet of the three-way water level regulator through a water pipe, a water inlet of the three-way water level regulator is higher than the plane of the top surface of the filter material layer, a ventilation port of the three-way water level regulator faces upwards, a water outlet of the three, the top surface of the rain shelter is a transparent film, and the side surface of the rain shelter is a filter screen.
2. The slow biological filter equipment for small centralized water supply plants in mountain areas as claimed in claim 1, wherein the water inlet pipe is provided with a flow control valve.
3. The slow biological filter equipment for small centralized water supply plants in mountain areas as claimed in claim 1, wherein a tank overflow pipe is provided on the upper side wall of the high-level tank.
4. The slow biological filter equipment suitable for small centralized water supply plants in mountain areas as claimed in claim 1, wherein a drain valve is connected to the side wall of the water collecting area.
5. The biological slow filtration device suitable for the small centralized water supply plant in the mountainous area as claimed in claim 1, wherein the filter material layer is river sand, and the grain size of the river sand is in the range of 0.3-1.0 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921282788.4U CN210367356U (en) | 2019-08-09 | 2019-08-09 | Biological slow filtration equipment suitable for small centralized water supply water plant in mountain area |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921282788.4U CN210367356U (en) | 2019-08-09 | 2019-08-09 | Biological slow filtration equipment suitable for small centralized water supply water plant in mountain area |
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| CN210367356U true CN210367356U (en) | 2020-04-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110282838A (en) * | 2019-08-09 | 2019-09-27 | 北京环渤利水科技有限公司 | A kind of slow filter equipment of the biology of the small-sized central water supply water factory in suitable mountain area |
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2019
- 2019-08-09 CN CN201921282788.4U patent/CN210367356U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110282838A (en) * | 2019-08-09 | 2019-09-27 | 北京环渤利水科技有限公司 | A kind of slow filter equipment of the biology of the small-sized central water supply water factory in suitable mountain area |
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