CN103253787A - Season metal polluted low-turbidity high-alga raw water strengthening treatment apparatus and technology thereof - Google Patents
Season metal polluted low-turbidity high-alga raw water strengthening treatment apparatus and technology thereof Download PDFInfo
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- CN103253787A CN103253787A CN2012100361975A CN201210036197A CN103253787A CN 103253787 A CN103253787 A CN 103253787A CN 2012100361975 A CN2012100361975 A CN 2012100361975A CN 201210036197 A CN201210036197 A CN 201210036197A CN 103253787 A CN103253787 A CN 103253787A
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Abstract
The invention discloses a season metal polluted low-turbidity raw water combination strengthening treatment technology. The technology is characterized in that the quality of raw water at the raw water monitoring center is detected by a water quality monitoring center, and a management control center controls all valves and an aeration mixing pipeline and a mixing stirrer in a mixing pool according to the detected raw water quality to realize flow switching. According to the invention, the combination technology is implemented according to the practical water quality condition, and a coagulation deposition-ultrafiltration short-flow technology is adopted when the quality of raw water is good, so energy-saved operation and simplified production management purposes are realized; and the whole technological flow is adopted when the season water quality change appears, so the quality of finished water is ensured, and the production operation flexibility and the adaptability to the water quality change of the total flow are embodied.
Description
Technical field
A kind of water treatment combination reinforcing process of the present invention for relating in the water supply engineering, a kind of low turbid algae concentrated feeding water strengthening and processing device and technology thereof that is applied to seasonal metallic pollution specifically, at former water winter low temperature low turbid and the metal ion rising of short period of time in summer and high algae, adopt seasonal combination to strengthen the target that conventional processing realizes energy-efficient processing.
Background technology
China's surface water water intaking source quality differs greatly, and is the low turbid former water of representative with lake and large reservoir wherein, and its water quality causes certain puzzlement often along with seasonal variation presents larger difference to production run.Winter low turbid during the coagulating sedimentation weak effect, cause the settling tank delivery turbidity sometimes even be higher than influent turbidity, increase the weight of the burden of filtration process; Cause the materials such as metal ion of in water bottom mud enrichment from water in to separate out because water temperature rises summer, and oxygen in water is also relatively low, also takes place with high algae situation sometimes.The variation of raw water quality is easy to cause the effluent quality instability, causes output water colourity, metal ion to exceed standard, and algae breakthrough process technology enters clear-water reservoir and pipe network.
At present, low turbid algae concentrated feeding water at seasonal metallic pollution adopts general conventional treatment process as the waterworks of drinking water source, when winter turbidity less than 10NTU and temperature less than 5 ℃, summer oxygen in water less than 7mg/l, iron ion greater than 0.6 mg/l, mn ion greater than 0.3 mg/l, algae greater than 1,000,000/when rising, be difficult to the effluent water quality standard that reaches new, need make up and strengthen the conventional processing measure.So process combination of water factory, must adapt to seasonal change of water quality, realize the strengthening treatment process of conventional coagulating sedimentation, aeration or air supporting, sand filtration and ultrafiltration, determine whether to surmount operation by monitoring water quality center and management control center are collaborative, performance combination process advantage, overcome the influence of factors such as technical process algal suspension, turbidity and temperature variation, reach satisfactory treatment effect.
Summary of the invention
An object of the present invention is to provide a kind of low turbid algae concentrated feeding water strengthening and processing device of seasonal metallic pollution, the factors such as metal ion, algae, turbidity and temperature variation that can solve are to the influence for the treatment of effect.
To achieve these goals, technical scheme of the present invention is: a kind of low turbid former water combination strengthening and processing device of seasonal metallic pollution, comprise the water inlet pipe network that connects successively, mixing pit, flocculation sedimentation tank, air flotation pool, lift pump room, the aeration tank, sand filter, the ultra-filtration membrane group, clean water basin, conveying pump room and the distribution system of water supply, it is characterized in that arranging simultaneously in the described mixing pit aeration mixed pipe line and mixing and blending machine, first valve is set between flocculation sedimentation tank and air flotation pool, between the output terminal of flocculation sedimentation tank and ultra-filtration membrane group, second valve is set, between the input terminus of the output terminal of flocculation sedimentation tank and lift pump room, the 3rd valve is set, between the input terminus of the output terminal of lift pump room and aeration tank, the 4th valve is set, between the input terminus of the output terminal of lift pump room and sand filter, the 5th valve is set, at the water inlet pipe network raw water quality monitoring point is set, this device also comprises monitoring water quality center and management control center, described monitoring water quality center is connected with the raw water quality monitoring point, and the aeration mixed pipe line in management control center and described each valve and the mixing pit is connected with mixing and blending machine.
Another object of the present invention provides a kind of low turbid algae concentrated feeding water strengthening treatment process of seasonal metallic pollution, and the factors such as metal ion, algae, turbidity and temperature variation that can solve are to the influence for the treatment of effect.
To achieve these goals, technical scheme of the present invention is: a kind of low turbid former water combination strengthening treatment process of seasonal metallic pollution, it is characterized in that, detected the raw water quality of raw water quality monitoring point by the monitoring water quality center, management control center is controlled aeration mixed pipe line and mixing and blending machine in each valve and the mixing pit according to detected raw water quality, and realization flow switches.
When raw water turbidity more than or equal to 10NTU, temperature more than or equal to 5 ℃, dissolved oxygen more than or equal to 7mg/l, iron ion smaller or equal to 0.6 mg/l, mn ion smaller or equal to 0.3 mg/l and algae smaller or equal to 1,000,000/liter condition under, first valve and the 3rd valve closes and second valve open, start mixing and blending machine simultaneously, close the aeration mixed pipe line, namely mixing pit adopts the mode of mechanically mixing; When raw water turbidity less than 10NTU or temperature less than 5 ℃ or dissolved oxygen less than 7mg/l or iron ion greater than 0.6 mg/l or mn ion during greater than 0.3 mg/l, and algae is smaller or equal under 1,000,000/liter the condition, first valve and second valve closes, the 3rd valve open, the 4th valve open, the 5th valve closes, close mixing and blending machine simultaneously, start the aeration mixed pipe line, namely mixing pit adopts the mode that aeration aerating mixes; When the monitoring water quality center monitors to algae greater than 1,000,000/when rising, first valve open, second valve closes, the 3rd valve closes, the 4th valve closes, the 5th valve open are closed mixing and blending machine simultaneously, start the aeration mixed pipe line, namely mixing pit adopts the mode that aeration aerating mixes.
The characteristic that the present invention is directed to the seasonal metallic pollution of raw water quality and low turbid high algae is optimized combination to conventional coagulating sedimentation, lifting, aeration, air supporting, filtration and ultrafiltration technology, form and strengthen the conventional processing system, by the monitoring water quality center former water, settling tank water outlet and ultrafiltration water outlet are monitored, switched and added amount of chemical control by the management control center realization flow.The advantage of this combination process is and can adopts the abbreviated system of coagulating sedimentation+ultrafiltration when raw water quality is better according to the water quality practical situation, realizes the target of energy-saving run and simplification production management; When seasonal change of water quality, adopt a complete set of technical process, guarantee the water quality of dispatching from the factory, overall procedure embodies the handiness of production run and to the adaptability of change of water quality.Mechanically mixing and aeration are set in the mixing pit mix two cover facilities, and consider that coagulant aids adds.Filler can be set in the aeration tank improve oxygen-transfer efficiency.The lift pump room water side can consider that the head of certain height difference falls, and plays and falls oxygenation.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the mixing pit synoptic diagram.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is a kind of low turbid former water combination strengthening and processing device of seasonal metallic pollution, comprise the water inlet pipe network 1 that connects successively, mixing pit 2, flocculation sedimentation tank 3, air flotation pool 11, lift pump room 4, aeration tank 5, sand filter 6, ultra-filtration membrane group 7, clean water basin 8, conveying pump room 9 and the distribution system of water supply 10, it is characterized in that arranging simultaneously in the described mixing pit aeration mixed pipe line 18 and mixing and blending machine 23, first valve 12 is set between flocculation sedimentation tank and air flotation pool, between the output terminal of flocculation sedimentation tank and ultra-filtration membrane group, second valve 13 is set, between the input terminus of the output terminal of flocculation sedimentation tank and lift pump room, the 3rd valve 14 is set, between the input terminus of the output terminal of lift pump room and aeration tank, the 4th valve 15 is set, between the input terminus of the output terminal of lift pump room and sand filter, the 5th valve 16 is set, at the water inlet pipe network raw water quality monitoring point is set, this device also comprises monitoring water quality center 19 and management control center 20, described monitoring water quality center 19 is connected with the raw water quality monitoring point, and the aeration mixed pipe line in management control center 20 and described each valve and the mixing pit is connected with mixing and blending machine.
The present invention includes a kind of low turbid algae concentrated feeding water combination strengthening treatment process of seasonal metallic pollution, detected the raw water quality of raw water quality monitoring point by the monitoring water quality center, when raw water turbidity more than or equal to 10NTU, temperature is more than or equal to 5 ℃, dissolved oxygen is more than or equal to 7mg/l, iron ion is smaller or equal to 0.6 mg/l, mn ion smaller or equal to 0.3 mg/l and algae smaller or equal to 1,000,000/when rising, management control center switches motor-operated control valve, make the valve 12 and the 3rd valve 14 is closed and second valve 13 is opened of winning, start mixing and blending machine 23 simultaneously, close aeration mixed pipe line 18, be to adopt mixing pit 2 to carry out mechanically mixing after the former water 1 first dosing, water outlet enters flocculation sedimentation tank 3 and precipitates, directly enter ultra-filtration membrane group 7 then and further remove turbidity and other impurity, send into the distribution system of water supply 10 by conveying pump room 9 after regulating and storing by clean water basin 8 again.The water quality that the 19 pairs of former water 1 in monitoring water quality center, flocculation sedimentation tank 3 water outlets and 7 water outlets of ultra-filtration membrane group are set is monitored; First valve, second valve, the 3rd valve, the 4th valve and the 5th valve all adopt motor-operated control valve; 20 pairs of management control centers are set respectively to be added snack made with traditional Chinese medicines and motor-operated control valve and carries out dosage and flow process control.When monitoring water quality center 19 monitor former water 1 turbidity less than 10NTU or temperature less than 5 ℃ or dissolved oxygen less than 7mg/l or iron ion greater than 0.6 mg/l or, mn ion is during greater than 0.3 mg/l, management control center 20 is by switching motor-operated control valve, win valve 12 and second valve 13 are closed, the 3rd valve 14 is opened, the 4th valve 15 is opened, the 5th valve 16 is closed, close mixing and blending machine 23 simultaneously, start aeration mixed pipe line 18, namely mixing pit 2 changes the aeration aerating mixing into by mechanically mixing.Concrete treatment process comprises: enter mixing pit 2 after the first dosing of former water and carry out the aeration mixing, entering flocculation sedimentation tank 3 then precipitates, settling tank 3 water outlets promote by lift pump room 4, enter aeration tank 5 again and carry out aeration aerating to improve dissolved oxygen concentration, aeration tank 5 water outlets enter sand filter 6 and filter to remove metal ion, further remove turbidity and other impurity by ultra-filtration membrane group 7 subsequently, water outlet is sent into the distribution system of water supply 10 by conveying pump room 9 after regulating and storing by clean water basin 8.When monitoring water quality center 19 monitor former water 1 algae greater than 1,000,000/when rising, management control center switches motor-operated control valve, the valve 12 of winning is opened, second valve 13 is closed, the 3rd valve 14 is closed, the 4th valve 15 is closed, the 5th valve 16 is opened, close mixing and blending machine simultaneously, start the aeration mixed pipe line, namely add air flotation pool 11 earlier between the input terminus of the output terminal of flocculation sedimentation tank 3 and ultra-filtration membrane group 7 and carry out air floatation alga removing, mixing pit 2 changes aeration aerating into by mechanically mixing and mixes simultaneously.Concrete treatment process comprises: enter mixing pit 2 after the first dosing of former water and carry out the aeration mixing, entering flocculation sedimentation tank 3 then precipitates, precipitated outlet water is removed algae by air flotation pool 11, promote by lift pump room 4 again and enter sand filter 6 removal metal ions, further remove turbidity and other impurity by ultra-filtration membrane group 7 subsequently, water outlet is sent into the distribution system of water supply 10 by conveying pump room 9 after regulating and storing by clean water basin 8.
The present invention adds snack made with traditional Chinese medicines in the feed-water end setting of mixing pit, establishes flocculating aids at the feed-water end of sand filter and adds a little, establishes sterilizing agent before the clean water basin and adds a little.According to a particular embodiment of the invention, add chlorine or dioxide peroxide 12 before mixing pit 2 ponds, potassium permanganate (composite salt) 13, powder activated carbon 14, alum 15 also adds the general potassium permanganate of coagulant aids 16(and the test of the visual raw water quality of powder activated carbon determines whether need to add in the pond, all the other medicaments all need add, with reference to adding pharmaceutical quantities: the about 2mg/l of the dosage of chlorine, the about 1mg/l of the dosage of dioxide peroxide, about 1～the 2mg/l of the dosage of potassium permanganate, about 5～the 10mg/l of the dosage of powder activated carbon, about 20～the 30mg/l of the dosage of alum, coagulant aids can adopt PAM, dosage about 0.1～0.2mg/l); Add flocculating aids 17(flocculating aids before the sand filter 6 and can adopt polymerize aluminum chloride, dosage about 3～5mg/l); Add chlorine or dioxide peroxide 12 sterilizations before the clean water basin 8.(the about 2～3mg/l of the dosage of chlorine, the dosage of dioxide peroxide about 1～2mg/l).The present invention is also in the water side of flocculation sedimentation tank 3, the water side of ultra-filtration membrane group 7 arranges Water-quality Monitoring Points, detect water quality data according to water quality detection center 19 in Water-quality Monitoring Points by management control center 20 and regulate and specifically add dose, generally control the flocculation sedimentation tank delivery turbidity less than 2NTU; Ultra-filtration membrane group delivery turbidity is less than 0.1NTU, and iron ion is less than 0.3 mg/l, and mn ion is less than 0.1 mg/l.
Former water enters mixing pit 2 by water inlet pipe 21, arranges in the pond that aeration mixed pipe line 18, coagulant aids add a little 17, mixing and blending machine 23 and effluent weir 24, and water outlet inserts flocculation sedimentation tanks 3 by rising pipe 22.Management control center control mixing pit operational mode when adopting mechanically mixing, starts mixing and blending machine 23, closes aeration mixed pipe line 18; Close mixing and blending machine 23 when adopting aeration aerating to mix, start aeration mixed pipe line 18.When aeration aerating mixed, air capacity was 0.3～1.3 according to gas-water ratio.
All the other flocculation sedimentation tanks, air flotation pool, sand filter, aeration tank, ultra-filtration membrane group, clean water basin and conveying pump room are prior art, no longer describe in detail.
Claims (7)
1. the low turbid former water of a seasonal metallic pollution makes up strengthening and processing device, comprise the water inlet pipe network that connects successively, mixing pit, flocculation sedimentation tank, air flotation pool, lift pump room, the aeration tank, sand filter, the ultra-filtration membrane group, clean water basin, conveying pump room and the distribution system of water supply, it is characterized in that arranging simultaneously in the described mixing pit aeration mixed pipe line and mixing and blending machine, first valve is set between flocculation sedimentation tank and air flotation pool, between the output terminal of flocculation sedimentation tank and ultra-filtration membrane group, second valve is set, between the input terminus of the output terminal of flocculation sedimentation tank and lift pump room, the 3rd valve is set, between the input terminus of the output terminal of lift pump room and aeration tank, the 4th valve is set, between the input terminus of the output terminal of lift pump room and sand filter, the 5th valve is set, at the water inlet pipe network raw water quality monitoring point is set, this device also comprises monitoring water quality center and management control center, described monitoring water quality center is connected with the raw water quality monitoring point, and the aeration mixed pipe line in management control center and described each valve and the mixing pit is connected with mixing and blending machine.
2. treatment unit as claimed in claim 1 is characterized in that the water side at flocculation sedimentation tank, and the water side of ultra-filtration membrane group arranges Water-quality Monitoring Points.
3. treatment unit as claimed in claim 1 is characterized in that adding snack made with traditional Chinese medicines in the feed-water end setting of mixing pit, establishes flocculating aids at the feed-water end of sand filter and adds a little, establishes sterilizing agent before the clean water basin and adds a little.
4. the low turbid former water of a seasonal metallic pollution makes up strengthening treatment process, it is characterized in that, detected the raw water quality of raw water quality monitoring point by the monitoring water quality center, management control center is controlled aeration mixed pipe line and mixing and blending machine in each valve and the mixing pit according to detected raw water quality, and realization flow switches.
5. treatment process as claimed in claim 4, it is characterized in that when raw water turbidity more than or equal to 10NTU, temperature more than or equal to 5 ℃, dissolved oxygen more than or equal to 7mg/l, iron ion smaller or equal to 0.6 mg/l, mn ion smaller or equal to 0.3 mg/l and algae smaller or equal under 1,000,000/liter the condition, former water enters mixing pit and carries out mechanically mixing, water outlet enters flocculation sedimentation tank and precipitates, directly enter the ultra-filtration membrane group then and further remove turbidity and other impurity, send into the distribution system of water supply by the conveying pump room after regulating and storing by clean water basin again.
6. treatment process as claimed in claim 4, it is characterized in that when raw water turbidity less than 10NTU or temperature less than 5 ℃ or dissolved oxygen less than 7mg/l or iron ion greater than 0.6 mg/l or mn ion during greater than 0.3 mg/l, and algae is smaller or equal under 1,000,000/liter the condition, former water enters mixing pit and carries out the aeration mixing, entering flocculation sedimentation tank then precipitates, the settling tank water outlet promotes by lift pump room, enter the aeration tank again and carry out aeration aerating to improve dissolved oxygen concentration, the aeration tank water outlet enters sand filter and filters to remove metal ion, further remove turbidity and impurity by the ultra-filtration membrane group subsequently, water outlet is sent into the distribution system of water supply by the conveying pump room after regulating and storing by clean water basin.
7. treatment process as claimed in claim 4, it is characterized in that when the monitoring water quality center monitors to former algae class greater than 1,000,000/when rising, enter mixing pit after the first dosing of former water and carry out the aeration mixing, entering flocculation sedimentation tank then precipitates, precipitated outlet water is removed algae by air flotation pool, promote by lift pump room and enter sand filter removal metal ion, further remove turbidity and impurity by the ultra-filtration membrane group subsequently, water outlet is sent into the distribution system of water supply by the conveying pump room after regulating and storing by clean water basin.
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Cited By (1)
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