CN214141717U - Feed water treatment system based on add medicine flocculation and precipitation - Google Patents
Feed water treatment system based on add medicine flocculation and precipitation Download PDFInfo
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- CN214141717U CN214141717U CN202022516625.7U CN202022516625U CN214141717U CN 214141717 U CN214141717 U CN 214141717U CN 202022516625 U CN202022516625 U CN 202022516625U CN 214141717 U CN214141717 U CN 214141717U
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Abstract
The utility model relates to a feed water treatment system based on dosing flocculation and precipitation, which comprises a water inlet pipeline, a dosing flocculation water inlet channel, a mixing tank, a flocculation tank and a sedimentation tank, wherein mechanical stirrers are arranged in the mixing tank and the flocculation tank, the flocculation tank is connected with the sedimentation water inlet channel, and the sedimentation water inlet channel is connected with the sedimentation tank through a pipeline; the inlet end of the pipeline is provided with a manual water inlet gate, and a rectification grid plate is arranged after the pipeline enters the settling zone. The beneficial effects are as follows: the mechanical flocculation treatment efficiency is high, the flocculation effect is good, the mechanical flocculation treatment device is not influenced by water quantity change, the water yield per unit area is large, and the mechanical flocculation treatment device has strong adaptability to water temperature and water quality change. The flocculation tanks are arranged in stages and separated by partition walls, so that short circuit of water flow is avoided, and the stirring strength is reduced one by one along with the growth of floccules. The sedimentation tank has strong adaptability to impact load and temperature change; the planar arrangement is compact.
Description
Technical Field
The utility model relates to a feedwater treatment field, in particular to feedwater treatment system based on add medicine flocculation and precipitation.
Background
Many areas of the world are facing the most severe water deficit. According to the statistics of world banks, 80% of countries and regions around the world lack fresh water for civil use and industrial use. According to united nations statistics, by 2025, two thirds of the world population may face water shortages, and water treatment technology will be increasingly appreciated.
From the perspective of water resources, China is a big country, but the water distribution in various regions of China is not perfect, the water distribution in various regions is not only uneven, but also the water supply construction is very lagged. In general, water supply in many cities is in serious shortage, and water-deficient cities occupy more than 1/2 in all countries, and another significant problem is the potential safety hazard of water use. The health of people is generally threatened due to poor water quality; some cities lack regional consideration in the aspect of construction of water supply projects, and repeated construction and resource waste are caused.
In recent years, urban water plants are continuously expanded and improved, water supply in villages and towns is popularized, the total water supply amount in China reaches a peak value in 2013, then the total water supply amount is increased and slowly reduced along with the coming out of the strict water resource management system of the central people government and each province, the water supply market is nearly saturated in recent years and enters a steady development state, and the total water supply amount in the whole country in 2019 still keeps on the level line of 6000 billions of cubic meters. However, it is a remarkable phenomenon that the urban environmental protection measures are relatively lagged behind and have a great distance compared with the advanced countries. Thus causing some of the water sources to become contaminated and creating significant waste. Therefore, the improvement of water treatment technology is urgently needed so as to enable the water supply engineering construction of China to be more storied.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a water supply treatment system which has high efficiency, good flocculation effect and compact planar arrangement and is based on chemical dosing flocculation precipitation.
The utility model provides a pair of feed water treatment system based on add medicine flocculation and precipitation, its technical scheme is:
a feed water treatment system based on dosing flocculation and precipitation comprises a water inlet pipeline, a dosing flocculation water inlet channel, a mixing tank, a flocculation tank and a sedimentation tank, wherein the water inlet pipeline is connected with the dosing flocculation water inlet channel; the inlet end of the pipeline is provided with a manual water inlet gate, and a rectification grid plate is arranged after the pipeline enters the settling zone.
Preferably, the mixing tank is formed by connecting and mixing a plurality of unit tanks step by step, and the flocculation tank is formed by connecting and flocculating a plurality of unit tanks step by step; the unit pools are separated by partition walls.
Preferably, the treatment system comprises more than two mixing tanks, including more than four flocculation tanks, and the stirring intensity decreases step by step as the floccules grow up.
Preferably, the sedimentation tank is connected with a triangular water outlet weir, the triangular water outlet weir is connected with a main water outlet channel, and the main water outlet channel is connected with a water outlet pipeline.
Preferably, a scum collecting device is arranged between the sedimentation tank and the triangular water outlet weir, and the scum collecting device is connected to a scum well outside the sedimentation tank through a scum pipe.
Preferably, be provided with the mud scraper in the sedimentation tank, the sedimentation tank bottom has inclination, and the bagger is connected to the one end of mud scraper, and the bagger is connected to the mud pipe through the mud pipe, is provided with the sleeve valve on the mud pipe, and the mud pipe is connected to the mudwell.
Preferably, the bottom of the mud bucket of each sedimentation tank is provided with an emptying pipe, and the emptying pipe is arranged in the bottom spaces of the water inlet channel and the mud discharge channel.
Preferably, the sedimentation tank is a horizontal flow sedimentation tank; the feedwater treatment system also includes a sump.
Preferably, the flocculation time in the flocculation tank is 20-30 min, the flow velocity of the flocculation tank is designed gradually from large to small, the initial flow velocity is 0.5-0.6 m/s, and the terminal flow velocity is 0.2-0.3 m/s.
Preferably, the settling time in the horizontal flow settling tank is 1.5-3.0 h.
The utility model discloses an implement including following technological effect:
(1) the mechanical flocculation treatment efficiency is high, the flocculation effect is good, the mechanical flocculation treatment device is not influenced by water quantity change, the water yield per unit area is large, and the mechanical flocculation treatment device has strong adaptability to water temperature and water quality change.
(2) The flocculation tanks are arranged in multiple stages and are separated by partition walls, so that the short circuit of water flow is avoided, and the stirring strength is reduced one by one along with the growth of floccules.
(3) The suspended particles in the water are separated out from the sediment under the action of gravity, so that the purposes of reducing head loss, improving flocculation effect and improving water quality of the water treatment plant are achieved. The sedimentation tank has strong adaptability to impact load and temperature change; the planar arrangement is compact.
Drawings
FIG. 1 is a schematic view of a planar structure of a water treatment system based on chemical-adding flocculation precipitation in the embodiment of the present invention.
FIG. 2 is a schematic view of the cross-sectional structure of a water treatment system based on chemical-adding flocculation precipitation in the embodiment of the present invention.
In the figure: 1. a water inlet pipe; 2. adding a medicine and flocculating the water inlet channel; 3. a mixing tank; 4. a flocculation tank; 5. water passing holes; 6. a mechanical stirrer; 7. settling the water inlet channel; 8. a manual water inlet gate; 9. a rectifying grid plate; 10. a sedimentation tank; 11. a scum collecting device; 12. a scum pipe; 13. a scum well; 14. a triangular effluent weir; 15. a main water outlet channel; 16. a water outlet pipeline; 17. a mud bucket; 18. a sleeve valve; 19. a mud discharge channel; 20; a sludge discharge pipe; 21. A mud scraper; 22. a sump; 23. and (5) emptying a pipe.
Detailed Description
The present invention will be described in detail with reference to the following embodiments and the accompanying drawings, wherein the described embodiments are only intended to facilitate the understanding of the present invention, and do not limit the present invention in any way.
Referring to fig. 1, the water supply treatment system based on dosing flocculation and precipitation provided by the present embodiment includes a water inlet pipe 1, a dosing flocculation water inlet channel 2, a mixing tank 3, a flocculation tank 4 and a precipitation tank 10, wherein the water inlet pipe 1 is connected to the dosing flocculation water inlet channel 2, the dosing flocculation water inlet channel 2 is connected to the mixing tank 3, the mixing tank 3 is connected to the flocculation tank 4 through a water through hole 5, mechanical stirrers 6 are disposed in the mixing tank 3 and the flocculation tank 4, the flocculation tank 4 is connected to the precipitation water inlet channel 7, and the precipitation water inlet channel 7 is connected to the precipitation tank 10 through a pipeline; the pipeline entry end is provided with manual gate 8 that intakes, and manual gate 8 that intakes is used for the inflow of control unit check, sets up rectification grid tray 9 after the pipeline gets into the settling zone to guarantee the homogeneity of rivers in the settling zone. The sedimentation tank 10 is connected with a triangular water outlet weir 14, the triangular water outlet weir 14 is connected with a main water outlet channel 15, and the main water outlet channel 15 is connected with a water outlet pipeline 16. A scum collecting device 11 is arranged between the sedimentation tank 10 and the triangular water outlet weir 14, and the scum collecting device 11 is connected to an outside scum well 13 through a scum pipe 12. Be provided with mud scraper 21 in the sedimentation tank 10, sedimentation tank 10 bottom has inclination, conveniently scrapes mud, and mud bucket 17 is connected to mud scraper 21's one end, and mud bucket 17 is connected to mud discharge canal 19 through mud pipe 20, is provided with cover tube valve 18 on the mud discharge pipe 20 for adjust the size of mud discharge, mud discharge canal 19 are connected to the mudwell, then carry out subsequent processing with mud to the interior sludge handling facility of factory through the stealthily dirty pump. The bottom of the mud bucket 17 of each sedimentation tank 10 is provided with an emptying pipe 23, and the emptying pipe 23 is installed in the bottom space of the water inlet channel and the mud discharge channel 19, namely in the pipe gallery, and is used for discharging sewage outside.
Preferably, the mixing tank 3 is formed by connecting and mixing a plurality of unit tanks step by step, and the flocculation tank 4 is formed by connecting and flocculating a plurality of unit tanks step by step; the unit pools are separated by partition walls. The treatment system comprises more than two mixing tanks 3, including more than four flocculation tanks 4, and the stirring intensity is gradually reduced along with the growth of the floccules. Examples of which are shown in figure 1 are two-stage mixing and four-stage flocculation. The settling tank 10 is a horizontal flow settling tank 10. The feedwater treatment system also includes a sump 22.
The water treatment system optimization technical standard based on dosing flocculation and precipitation of the embodiment is as follows:
1. the flocculation time in the flocculation tank 4 is 20-30 min.
2. The flow velocity of the flocculation tank 4 is gradually changed from large to small, the initial flow velocity is 0.5-0.6 m/s, and the tail end flow velocity is 0.2-0.3 m/s.
3. The settling time in the horizontal flow type settling pond 10 is 1.5-3.0 h.
4. The removal rate of suspended matters (SS) can reach 80-85%.
In the dosing flocculation section: coagulant is added into raw water to ensure that suspended matters and colloidal particles which are difficult to naturally precipitate and separate in the water are mutually polymerized to form large-particle flocs (commonly called alum flocs). The suspended substances in the water include algae, bacteria, fine particles, silt and the like. The coagulant used in the present invention includes aluminum salt and iron salt (aluminum sulfate, polyaluminum chloride, ferric chloride, ferrous sulfate, polyferric sulfate, alum, etc.). The dosing flocculation section adopts a mechanical mixing flocculation tank 4.
A precipitation section: the method is a method for separating suspended substances heavier than water, alum floc generated by coagulation, and the like from water under the action of gravity.
The above scheme of the embodiment has the following advantages:
(1) the mechanical flocculation treatment efficiency is high, the flocculation effect is good, the mechanical flocculation treatment device is not influenced by water quantity change, the water yield per unit area is large, and the mechanical flocculation treatment device has strong adaptability to water temperature and water quality change.
(2) The flocculation tank 4 is arranged according to 4 grades and is separated by a partition wall, thereby avoiding the short circuit of water flow and reducing the stirring strength lattice by lattice along with the growth of a flocculating constituent.
(3) The suspended particles in the water are separated out from the sediment under the action of gravity, so that the purposes of reducing head loss, improving flocculation effect and improving water quality of the water treatment plant are achieved. The sedimentation tank 10 has strong adaptability to impact load and temperature change; the planar arrangement is compact.
The embodiment also provides a feed water treatment method based on dosing flocculation and precipitation, raw water enters a mixing tank 3 of a dosing flocculation section through a dosing flocculation inlet channel 2, a mechanical stirrer 6 is arranged in the mixing tank 3, the raw water is mixed with a coagulant in the mixing tank 3 and contacts with suspended matters to form fine alum flocs and then enters a flocculation tank 4, and the mechanical stirrer 6 is arranged in the flocculation tank 4 to enable the alum flocs to form large compact flocs; the mixing tank 3 is formed by mixing a plurality of unit tanks step by step, the flocculation tank 4 is formed by flocculating the plurality of unit tanks step by step, and the stirring intensity is reduced step by step along with the growth of a flocculating constituent; the coagulation is more sufficient, and the flow rate is more convenient to adjust;
the effluent in the flocculation tank 4 enters a horizontal flow sedimentation tank 10 through a sedimentation water inlet channel 7, water is distributed to each sedimentation tank 10 through the water inlet channel, a manual water inlet gate 8 is arranged at the front section of the pipeline and used for controlling the water inlet amount of each cell, and a rectification grid plate 9 is arranged after the pipeline enters a sedimentation area to ensure the uniformity of water flow in the sedimentation area;
the sedimentation tank 10 scrapes the sludge at the bottom of the tank into mud hoppers 17 at the front end of the sedimentation tank through a chain type mud scraper 21, the sludge in each mud hopper 17 is discharged into a mud discharge channel 19 through a mud discharge pipe 20 in a static pressure mode, and the mud discharge pipe 20 is provided with a sleeve valve 18 for adjusting the mud discharge amount; discharging the sludge in the sludge discharge channel 19 into a sludge discharge well, and then conveying the sludge to a sludge treatment facility in the plant area for subsequent treatment through a submersible sewage pump;
after passing through the scum collecting device 11, the water in the sedimentation tank 10 passes through a triangular water outlet weir 14 and a main water outlet channel 15 in sequence, and is finally discharged through a water outlet pipeline 16.
The sedimentation tank 10 is established blow-down pipe 23 in mud bucket 17 bottom, and blow-down pipe 23 is installed in inlet channel and the 19 bottom spaces of mud discharging channel, and in the piping lane promptly, the blowdown sewage is arranged outward. In addition, the sedimentation tank 10 is provided with a scum well 131 seat, scum is discharged to a scum well 13 outside the tank through a scum collecting device 11 arranged on the tank surface, and supernatant is discharged from the scum well 13.
The suspended particles in the water are separated out from the sediment under the action of gravity, so that the purposes of reducing head loss, improving flocculation effect and improving water quality of the water treatment plant are achieved.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. The utility model provides a feedwater processing system based on add medicine flocculation and precipitation, includes the inlet channel, adds medicine flocculation inlet channel, mixing tank, flocculation basin and sedimentation tank, its characterized in that: the water inlet pipeline is connected with the dosing flocculation water inlet channel, the dosing flocculation water inlet channel is connected with the mixing tank, the mixing tank is connected with the flocculation tank through a water through hole, mechanical stirrers are arranged in the mixing tank and the flocculation tank, the flocculation tank is connected with the sedimentation water inlet channel, and the sedimentation water inlet channel is connected with the sedimentation tank through a pipeline; the inlet end of the pipeline is provided with a manual water inlet gate, and a rectification grid plate is arranged after the pipeline enters the settling zone.
2. The medicated flocculation sedimentation based feedwater treatment system of claim 1, wherein: the mixing tank is formed by connecting and mixing a plurality of unit tanks step by step, and the flocculation tank is formed by connecting and flocculating a plurality of unit tanks step by step; the unit pools are separated by partition walls.
3. The medicated flocculation sedimentation based feedwater treatment system of claim 2, wherein: the treatment system comprises more than two mixing tanks, including more than four flocculation tanks, and the stirring intensity is gradually reduced along with the growth of the floccules.
4. The medicated flocculation sedimentation based feedwater treatment system of claim 1, wherein: the sedimentation tank is connected with a triangular water outlet weir, the triangular water outlet weir is connected with a main water outlet channel, and the main water outlet channel is connected with a water outlet pipeline.
5. The medicated flocculation sedimentation based feedwater treatment system of claim 4, wherein: and a scum collecting device is arranged between the sedimentation tank and the triangular water outlet weir and is connected to a scum well outside the tank through a scum pipe.
6. The medicated flocculation sedimentation based feedwater treatment system of claim 1, wherein: be provided with mud scraper in the sedimentation tank, the sedimentation tank bottom has inclination, mud bucket is connected to mud scraper's one end, and mud bucket is connected to the mud discharging canal through the mud pipe, is provided with the sleeve valve on the mud discharging pipe, and the mud discharging canal is connected to the mudwell.
7. The medicated flocculation sedimentation based feedwater treatment system of claim 1, wherein: the bottom of the mud bucket of each sedimentation tank is provided with a vent pipe, and the vent pipe is arranged in the bottom space of the water inlet channel and the mud discharge channel.
8. The medicated flocculation sedimentation based feedwater treatment system of claim 1, wherein: the sedimentation tank is a horizontal flow sedimentation tank; the feedwater treatment system also includes a sump.
9. The medicated flocculation sedimentation based feedwater treatment system of claim 1, wherein:
the flocculation time in the flocculation tank is 20-30 min.
10. The medicated flocculation sedimentation based feedwater treatment system of claim 1, wherein: the settling time in the advection type settling pond is 1.5-3.0 h.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022516625.7U CN214141717U (en) | 2020-11-04 | 2020-11-04 | Feed water treatment system based on add medicine flocculation and precipitation |
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| CN202022516625.7U CN214141717U (en) | 2020-11-04 | 2020-11-04 | Feed water treatment system based on add medicine flocculation and precipitation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112429824A (en) * | 2020-11-04 | 2021-03-02 | 岭南水务集团有限公司 | Feed water treatment system and method based on dosing flocculation and precipitation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112429824A (en) * | 2020-11-04 | 2021-03-02 | 岭南水务集团有限公司 | Feed water treatment system and method based on dosing flocculation and precipitation |
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