CN104261508B - Based on sewage dephosphorization equipment and the method for media adsorbs - Google Patents
Based on sewage dephosphorization equipment and the method for media adsorbs Download PDFInfo
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- CN104261508B CN104261508B CN201410554671.2A CN201410554671A CN104261508B CN 104261508 B CN104261508 B CN 104261508B CN 201410554671 A CN201410554671 A CN 201410554671A CN 104261508 B CN104261508 B CN 104261508B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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- Hydrology & Water Resources (AREA)
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Abstract
The present invention relates to the sewage dephosphorization equipment based on media adsorbs and method, equipment comprises: tank body, air compressor, water inlet baffle-box, water distributing tray, mud holding tank, sand-washing device and explosive box, at tank body built with quartz sand, in tank body, from top to bottom sand-washing device and water distributing tray are housed successively, the tank body of sand-washing device upper end has rising pipe, sand-washing device is divided into settling tank by spoil disposal weir and leaks sandpipe, at leakage sandpipe built with washed-out sand air lift siphunculus, the bottom of washed-out sand air lift siphunculus is vertically inserted into the bottom close to tank body, at washed-out sand air lift siphunculus built with the air-supply duct be connected with air compressor, be connected with mud holding tank by shore pipe in the bottom of settling tank, water distributing tray is connected with explosive box with water inlet baffle-box respectively by water inlet pipe, phosphorus removing method comprises: preparation, cleaning, quartz sand modification and working stage, and the present invention is easy to operate, and the removal efficiency of phosphorus is high, phosphor-removing effect is stablized, be easy to management and control, thus has saved artificial and handling cost.
Description
Technical field
The present invention relates to technical field of sewage, particularly a kind of sewage dephosphorization equipment based on media adsorbs and method.
Background technology
Along with Economic development and industrialization development, the sewage generation being rich in phosphorus gets more and more.Phosphorus is the important factor causing body eutrophication, and eutrophication can cause Measures of Algae in Water Body amount reproduction, increases difficulty and the cost of water treatment.Therefore the content requirement of national relevant laws and regulations to nutritive substances such as the nitrogen phosphorus after sewage disposal is more and more stricter.The recovery of waste water dephosphorization and phosphorus also becomes the focus of sewage disposal research day by day.
At present, sewage dephosphorization method is mainly materialization phosphorus removal method and biological phosphate-eliminating technology.Materialization phosphorus removal method mainly utilizes physical-chemical reactions such as adding chemical floc precipitation, ion-exchange, crystallization, absorption, makes the phosphorus in waste water be converted into insoluble calcium phosphate precipitation thus removes.Biological phosphate-eliminating technology mainly utilizes the excess phosphorus absorbing phenomenon of polyP bacteria, Phosphorus From Wastewater is stored and is transformed in microbe, then discharge with the form of excess sludge, complete the removal of phosphor in sewage.Materialization phosphorus removal method is easy to control, simple to operate, but when being used alone, the application of physico-chemical process dephosphorization is had any problem, generally as primary treatment or advanced treatment.The dephosphorization effect of biological phosphate-eliminating method depends on excess sludge discharge amount, and in water inlet, the content of phosphorus and other nutritive elements and ratio are suitable for the treatment effect of guarantee microorganism simultaneously, and affect by external environments such as seasonal temperatures.In recent years, the investigation and application for materialization phosphorus removal and biological phosphate-eliminating technology deepens continuously.
Wherein, by carrying out modification to the medium filtrate of materialization phosphorus removal, improve the dirt-carrying ability of medium, thus the removal efficiency improving phosphorus is also a research direction in recent years.Studies have reported that, basic sediment method is adopted to utilize metal oxide or metal hydroxides to carry out modification to quartz sand surface, modified quartz sand specific surface area increases, surface potential and adsorption function group quantity change to some extent, thus can improve the removal efficiency of quartz sand medium filtrate to heavy metal, microorganism, natural organic matter in water.The research such as Wang Junling reports and utilizes iron salt solutions to soak and after the mode of heat repeatedly carries out modification to quartz sand, Modified Quartz Sand significantly improves the removal efficiency of trace amounts of phosphorus in sewage.
But high-temperature heating method modification and basic sediment method Modified Quartz Sand Phosphate Sorption are comparatively firm, and difficult drop-off, removing with Modified Quartz Sand cycling and reutilization of surperficial phosphorus containing sludge is comparatively difficult, is not suitable for suitability for industrialized production.
Summary of the invention
The object of this invention is to provide a kind of sewage dephosphorization equipment based on media adsorbs and method, the method is based on chemical dephosphorization, take quartz sand as medium filtrate, come off by chemical reaction, filtrate absorption, air lift, be separated the phosphorus removed in sewage, while efficient removal Phosphorus in Domestic Wastewater with Pulverized content, the quartz sand as adsorption medium filtrate can realize modification easily and iterative cycles uses, be convenient to management and operation, dephosphorization efficient quick.In process of production to while quartz sand modification, realize the absorption of phosphor in sewage element and remove.
In order to complete object of the present invention, the present invention by the following technical solutions:
Of the present invention. a kind of sewage dephosphorization equipment based on media adsorbs, it comprises: tank body, air compressor, water inlet baffle-box, water distributing tray, mud holding tank, sand-washing device and explosive box, top cover is equipped with on the top of tank body, at tank body built with quartz sand, wherein: in tank body, from top to bottom sand-washing device and water distributing tray are housed successively, the tank body of sand-washing device upper end has rising pipe, sand-washing device is divided into settling tank by spoil disposal weir and leaks sandpipe, at sand-washing device top, sand-washing device lid is housed, at leakage sandpipe built with washed-out sand air lift siphunculus, the bottom of washed-out sand air lift siphunculus is vertically inserted into the bottom close to tank body, at washed-out sand air lift siphunculus built with the air-supply duct be connected with air compressor, the bottom of settling tank is connected with mud holding tank by shore pipe, water distributing tray is connected with explosive box with water inlet baffle-box respectively by water inlet pipe, be equipped with in tank base and empty pipe.
Of the present invention. a kind of sewage dephosphorization equipment based on media adsorbs, wherein: the bottom of described tank body is back taper; The bottom of washed-out sand air lift siphunculus is toroidal.
Of the present invention. a kind of sewage dephosphorization equipment based on media adsorbs, wherein: described water inlet baffle-box is connected with water inlet pipe with dosing pump respectively by intake pump with explosive box, and water inlet pipe is also equipped with into water sampling valve.
Of the present invention. a kind of sewage dephosphorization equipment based on media adsorbs, wherein: described rising pipe is equipped with water outlet sampling valve and return pipe, return pipe is equipped with and returns water valve.
Of the present invention. a kind of sewage dephosphorization equipment based on media adsorbs, wherein: described sand-washing device is fixed in tank body by flat bracing frame; The bottom of washed-out sand air lift siphunculus is fixed in tank body by diagonal ligament frame, and described tank body is supported on horizontal plane by support.
Of the present invention. a kind of sewage dephosphorization equipment based on media adsorbs, wherein: described in empty on pipe exhaust-valve be housed.
Of the present invention. a kind of phosphorus removing method of the sewage dephosphorization equipment based on media adsorbs, wherein:
(a), preparation; Be that the quartz sand of 0.5cm-1.5cm is filled in tank body by particle diameter, the height that quartz sand loads accounts for 2/3 to 3/4 of tank body height;
(b), cleaning; Open intake pump, tap water is filled by water inlet baffle-box, tap water flows into tank body by water inlet pipe and water distributing tray successively, after tap water fills up tank body gradually, tank body is discharged from rising pipe, wash the sand and fine solid particle that are attached to quartz sand surface and be entrained in quartz sand, the amount of the tap water flowed in tank body is 1 times of tank body volume to 4 times, detect from water outlet sampling valve the total suspended matter flowed out water simultaneously, when the total suspended matter TSS flowing out water is less than 15mg/L, close intake pump, stop cleaning;
The modification of (c), quartz sand: opening dosing pump, is the FeCl of 32%-35% by being stored in concentration in explosive box
3solution is sent in tank body by water inlet pipe, opens intake pump simultaneously, sends in tank body by the tap water in water inlet baffle-box by water inlet pipe, to the water sampling entered in tank body from water inlet sampling valve, makes Fe in flooding velocity
3+concentration remain on 4mg/L-6mg/L, meanwhile, open air compressor make the air flow quantity entered in tank body be 4L/min-6L/min, treated water is all back in water baffle-box from the return pipe rising pipe, the quartz sand in tank body with water inlet in Fe
3+after contact, form ferriferous oxide coating at quartz sand surface, become ferriferous oxide Modified Quartz Sand, continue aforesaid operations after 48 hours, from water outlet sampling valve, detect the Fe in water outlet
3+concentration, as the Fe in water outlet
3+concentration when being greater than 4mg/L, close dosing pump, intake pump and air compressor, quartz sand modification completes;
(d), working stage: opening dosing pump, is the FeCl of 32%-35% by being stored in concentration in explosive box
3solution is sent in tank body by water inlet pipe, opens intake pump simultaneously, sends in tank body by the sewage in water inlet baffle-box by water inlet pipe, to the sewage sampling entered in tank body from water inlet sampling valve, makes Fe in flooding velocity
3+concentration remain on 4mg/L-6mg/L, simultaneously, open air compressor, the air flow quantity entered in tank body is made to be 4L/min-6L/min, pressurized air is delivered to the bottom of tank body by air-supply duct, the quartz sand of tank base to be brought in washed-out sand air lift siphunculus and to move upward along washed-out sand air lift siphunculus after discharging from air-supply duct by pressurized air; Surface attachment quartz sand mutual collision friction in the process moved upward with compressed-air actuated air-flow of phosphorus containing sludge, and after discharge washed-out sand air lift siphunculus, with sand-washing device lid collision friction, the phosphorus containing sludge being attached to quartz sand surface peels off in collision friction, enter settling tank by the spoil disposal weir flow of sand-washing device sidewall, then enter in mud holding tank through shore pipe; The quartz sand washing phosphorus containing sludge off falls into tank body through leaking sandpipe; The sewage processed is discharged by rising pipe, from the sampling of water outlet sampling valve, detects the phosphorus content of discharging water, and when the phosphorus content of discharging water is less than 0.5mg/L, reach emission standard, sewage is discharged tank body; When the phosphorus content of discharging water is greater than 0.5mg/L, discharges water and be all back in water baffle-box by return pipe, until when the phosphorus content of discharging water is less than 0.5mg/L, sewage is discharged tank body.
Of the present invention. a kind of phosphorus removing method of the sewage dephosphorization equipment based on media adsorbs, wherein: described sewage refers to after the process of municipal wastewater treatment facility, pH is 6.0 to 8.0, total suspended matter is less than 15mg/L and total phosphorus concentration is greater than the sewage of 0.5mg/L.
Of the present invention. a kind of phosphorus removing method of the sewage dephosphorization equipment based on media adsorbs, wherein: when dephosphorization equipment needs repairing, close dosing pump, intake pump and air compressor, then open exhaust-valve, the quartz sand in tank body and sewage are discharged tank body by emptying pipe.
Beneficial effect of the present invention is as follows:
1., in process of production to while quartz sand modification, realize the absorption of phosphor in sewage element and remove.Easy to operate, be easy to management and control, thus having saved artificial and handling cost.
2. use the dephosphorization of ferriferous oxide Modified Quartz Sand, the removal efficiency of phosphor in sewage content is high, and simultaneously not by the impact of the external environments such as nutritive element content, ratio and the seasonal temperature in sewage, phosphor-removing effect is stablized.
Accompanying drawing explanation
Accompanying drawing 1 is the schematic diagram of the sewage dephosphorization equipment based on media adsorbs of the present invention.
In FIG:
Label 1 is tank body; Label 2 is top cover; Label 3 is support; Label 4 is water inlet baffle-box; Label 5 is intake pump; Label 6 is water inlet pipe; Label 7 is water distributing tray; Label 8 is explosive box; Label 9 is dosing pump; Label 10 is water inlet sampling valve; Label 11 is rising pipe; Label 12 is for emptying pipe; Label 13 is sand-washing device; Label 14 is spoil disposal weir; Label 15 is shore pipe; Label 16 is mud holding tank; Label 17 is air compressor; Label 18 is air-supply duct; Label 19 is return pipe; Label 20 is washed-out sand air lift siphunculus; Label 21 is exhaust-valve; Label 22 is diagonal ligament frame; Label 23 is flat bracing frame; Label 24 is water outlet sampling valve; Label 25 is quartz sand; Label 26 is for leaking sandpipe; Label 27 is settling tank; Label 28 is for returning water valve, and label 29 is sand-washing device lid.
Embodiment
Describing in detail below in conjunction with accompanying drawing 1 utilizes method of the present invention to carry out an embodiment of sewage dephosphorization, by the detailed description to this embodiment, beneficial effect of the present invention will be made more apparent.The effect of this embodiment illustrates, and do not have limited significance.
As described in Figure 1, sewage dephosphorization equipment based on media adsorbs of the present invention, it comprises: tank body 1, air compressor 17, water inlet baffle-box 4, water distributing tray 7, mud holding tank 16, sand-washing device 13 and explosive box 8, and top cover 2 is equipped with on the top of tank body 1, and the bottom of tank body 1 is back taper, at tank body 1 built with quartz sand 25, in tank body 1, sand-washing device 13 and water distributing tray 7 are housed from top to bottom successively, the tank body 1 of sand-washing device 13 upper end has rising pipe 11, sand-washing device 13 is divided into settling tank 27 by spoil disposal weir 14 and leaks sandpipe 26, at sand-washing device 13 top, sand-washing device lid 29 is housed, at leakage sandpipe 26 built with washed-out sand air lift siphunculus 20, the bottom of washed-out sand air lift siphunculus 20 is vertically inserted into the bottom close to tank body 1, the bottom of washed-out sand air lift siphunculus 20 is toroidal, at washed-out sand air lift siphunculus 20 built with the air-supply duct 18 be connected with air compressor 17, the bottom of settling tank 27 is connected with mud holding tank 16 by shore pipe 15, water distributing tray 7 is connected with explosive box 8 with water inlet baffle-box 4 respectively by water inlet pipe 6, be equipped with bottom close tank body 1 and empty pipe 12.
Water inlet baffle-box 4 is connected with water inlet pipe 6 with dosing pump 9 respectively by intake pump 5 with explosive box 8, and water inlet pipe 6 is also equipped with into water sampling valve 10.Rising pipe 11 is equipped with water outlet sampling valve 24 and return pipe 19, return pipe 19 is equipped with and returns water valve 28.Empty on pipe 12 and exhaust-valve 21 is housed.
In order to make sand-washing device 13 and washed-out sand air lift siphunculus 20 be fixed better, sand-washing device 13 is fixed in tank body 1 by flat bracing frame 23; The bottom of washed-out sand air lift siphunculus 20 is fixed in tank body 1 by diagonal ligament frame 22, and described tank body 1 is supported on horizontal plane by support 3.
The sewage of the invention process dephosphorization process refers to after the process of municipal wastewater treatment facility, and pH is 6.0 to 8.0, total suspended matter concentration is less than 15mg/L and total phosphorus concentration is greater than the sewage of 0.5mg/L.
After the sewage implementing dephosphorization process in the present embodiment is through the process of municipal wastewater treatment facility, pH is 6.12, and total suspended matter concentration is 4.0mg/L, and total phosphorus concentration is the sewage of 1.98mg/L.
Based on a phosphorus removing method for the sewage dephosphorization equipment of media adsorbs, it comprises the following steps:
(a), preparation; Be that the quartz sand 25 of 0.5cm-1.5cm is filled in tank body 1 by particle diameter, the height that quartz sand 25 loads accounts for 2/3 to 3/4 of tank body height, such as; In the present embodiment, the height that quartz sand 25 loads accounts for 2/3 of tank body height;
(b), cleaning, open intake pump 5, tap water is filled by water inlet baffle-box 4, tap water flows into tank body 1 by water inlet pipe 6 and water distributing tray 7 successively, after tap water fills up tank body 1 gradually, tank body 1 is discharged from rising pipe 11, wash and be attached to quartz sand 25 surface and the sand be entrained in quartz sand 25 and fine solid particle, the amount of the tap water flowed in tank body 1 is 1 times of tank body 1 volume to 4 times, sample from water outlet sampling valve 24 simultaneously, detect that water pipe 11 flows out the total suspended matter in water, when the total suspended matter TSS flowing out water is less than 15mg/L, close intake pump 5, stop cleaning.In the present embodiment, the residence time of sewage in dephosphorization apparatus is 0.5 hour, use tap water cleaning medium 2 hours, namely after scavenging period reaches 4 times of hydraulic detention time, the water sample of the rear water outlet of cleaning is gathered from water outlet sampling valve 24, detect total suspended matter TSS wherein, its result is 1.2mg/L, reaches the requirement that total suspended matter TSS is less than 15mg/L; Close intake pump 5, stop cleaning, then sewage to be processed is sent in water inlet baffle-box 4;
The modification of (c), quartz sand: opening dosing pump 9, is the FeCl of 32%-35% by being stored in concentration in explosive box 8
3solution is sent in tank body 1 by water inlet pipe 6, opens intake pump 5 simultaneously, sends in tank body 1 by the tap water in water inlet baffle-box 4 by water inlet pipe 6, to the water sampling entered in tank body 1 from water inlet sampling valve 10, makes Fe in flooding velocity
3+concentration remain on 4mg/L-6mg/L, meanwhile, open air compressor 17, make the air flow quantity entered in tank body 1 be 4L/min-6L/min, treated water is all back in water baffle-box 4 from the return pipe 19 rising pipe 11, the quartz sand 25 in tank body 1 and the Fe in water inlet
3+after contact, form ferriferous oxide coating on quartz sand 25 surface, become ferriferous oxide Modified Quartz Sand, continue aforesaid operations after 48 hours, from water outlet sampling valve 24, detect the Fe in water outlet
3+concentration, as the Fe in water outlet
3+concentration when being greater than 4mg/L, close dosing pump 9, intake pump 5 and air compressor 17, quartz sand modification completes; The FeCl such as used in the present embodiment
3strength of solution is 32%, FeCl
3the add-on of solution is: Fe in flooding velocity
3+concentration remain on 5mg/L, continue aforesaid operations after 48 hours, from water outlet sampling valve 24, detect the Fe in water outlet
3+concentration, as the Fe in water outlet
3+concentration when being 4mg/L, close dosing pump 9, intake pump 5 and air compressor 17, modification completes; The relatively unmodified quartz sand of specific surface area of modified ferriferous oxide quartz sand can increase by 6 times-15 times, increases substantially the adsorption efficiency of phosphor in sewage element.
(d), working stage: opening dosing pump 9, is the FeCl of 32%-35% by being stored in concentration in explosive box 8
3solution is sent in tank body 1 by water inlet pipe 6, opens intake pump 5 simultaneously, sends in tank body 1 by the sewage in water inlet baffle-box 4 by water inlet pipe 6, to the sewage sampling entered in tank body 1 from water inlet sampling valve 10, makes Fe in flooding velocity
3+concentration remain on 4mg/L-6mg/L, simultaneously, open air compressor 17, the air flow quantity entered in tank body 1 is made to be 4L/min-6L/min, pressurized air is delivered to the bottom of tank body 1 by air-supply duct 18, after pressurized air is discharged from air-supply duct 18, the quartz sand 25 bottom tank body 1 to be brought in washed-out sand air lift siphunculus 20 and to move upward along washed-out sand air lift siphunculus 20; Surface attachment quartz sand 25 mutual collision friction in the process moved upward with compressed-air actuated air-flow of phosphorus containing sludge, and after discharge washed-out sand air lift siphunculus 20, with sand-washing device lid 29 collision friction, the phosphorus containing sludge being attached to quartz sand 25 surface peels off in collision friction, flow into settling tank 27 by the spoil disposal weir 14 of sand-washing device 13 sidewall, then enter in mud holding tank 16 through shore pipe 15; The quartz sand 25 washing phosphorus containing sludge off falls into tank body 1 through leaking sandpipe 26; The sewage processed is discharged by rising pipe 11, samples the phosphorus content detecting and discharge water from rising pipe 11 from water outlet sampling valve 24, when the phosphorus content of discharging water is less than 0.5mg/L, reaches emission standard; When the phosphorus content of discharging water is greater than 0.5mg/L, discharges water and be all back in water baffle-box 4 by return pipe 19, until when the phosphorus content of discharging water is less than 0.5mg/L, sewage is discharged tank body 1.
In the present embodiment, the pH of sewage is 6.12, Fe in flooding velocity
3+concentration be 5mg/L, in slightly acidic, ferriferous oxide Modified Quartz Sand 25 surface adsorption one deck water molecules and hydroxylation, with
formula exists.Phosphoric tend in sour environment with
with
form exist,
with
with Modified Quartz Sand 25 surface
formed
sewage is discharged by the water distributor 7 be arranged in bottom tank body 1 and is travelled up to the process of water outlet, the phosphorus in sewage gradually and
formed
be combined in the surface of Modified Quartz Sand 25, thus remove from water, reduce the phosphorus concentration in sewage gradually, in water outlet after finally being discharged by outlet pipeline 11, total phosphorus concentration is 0.26mg/L, and in satisfied country " urban wastewater treatment firm pollutant emission standard " GB18918-2002, Sewage Water Emissions one-level A is to the emission standard requirement of total phosphorus.Relative to water inlet, in sewage, the clearance of total phosphorus reaches 86.87%.
The quartz sand 25 of wash-out phosphorus containing sludge drops on the superiors of accumulation medium in tank body 1, and the phosphoric concentration in the sewage of this part is lower, is conducive to quartz sand medium and Fe
3+effect, re-starts ferriferous oxide modification.Along with the quartz sand medium of bottom moves upward with compressed-air actuated air-flow, the Modified Quartz Sand on upper strata is progressively to tank body 1 basic motion, reenter except phosphorus reaction with after the waste water that phosphorus concentration is higher, achieve synchronously carrying out of quartz sand modification and sewage dephosphorization.
When dephosphorization equipment needs repairing, close dosing pump 9, intake pump 5 and air compressor 17, then open exhaust-valve 21, the quartz sand 25 in tank body 1 and sewage are discharged tank body 1 by emptying pipe 12.
More than describing is explanation of the invention, and be not the restriction to invention, limited range of the present invention is see claim, and when without prejudice to spirit of the present invention, the present invention can do any type of amendment.
Claims (8)
1. the sewage dephosphorization equipment based on media adsorbs, it comprises: tank body (1), air compressor (17), water inlet baffle-box (4), water distributing tray (7), mud holding tank (16), sand-washing device (13) and explosive box (8), top cover (2) is equipped with on the top of tank body (1), at tank body (1) built with quartz sand (25), sand-washing device (13) and water distributing tray (7) are housed successively from top to bottom in tank body (1), the tank body (1) of sand-washing device (13) upper end has rising pipe (11), sand-washing device (13) is divided into settling tank (27) by spoil disposal weir (14) and leaks sandpipe (26), at sand-washing device (13) top, sand-washing device lid (29) is housed, in leakage sandpipe (26) built with washed-out sand air lift siphunculus (20), the bottom of washed-out sand air lift siphunculus (20) is vertically inserted into the bottom close to tank body (1), at washed-out sand air lift siphunculus (20) built with the air-supply duct (18) be connected with air compressor (17), the bottom of settling tank (27) is connected with mud holding tank (16) by shore pipe (15), water distributing tray (7) is connected with explosive box (8) with water inlet baffle-box (4) respectively by water inlet pipe (6), be equipped with in tank body (1) bottom and empty pipe (12), it is characterized in that: described water inlet baffle-box (4) is connected with water inlet pipe (6) with dosing pump (9) respectively by intake pump (5) with explosive box (8), water inlet pipe (6) is also equipped with into water sampling valve (10).
2. the sewage dephosphorization equipment based on media adsorbs according to claim 1, is characterized in that: the bottom of described tank body (1) is back taper; The bottom of washed-out sand air lift siphunculus (20) is toroidal.
3. the sewage dephosphorization equipment based on media adsorbs according to claim 2, it is characterized in that: described rising pipe (11) is equipped with water outlet sampling valve (24) and return pipe (19), return pipe (19) is equipped with and returns water valve (28).
4. the sewage dephosphorization equipment based on media adsorbs according to claim 3, is characterized in that: described sand-washing device (13) is fixed in tank body (1) by flat bracing frame (23); The bottom of washed-out sand air lift siphunculus (20) is fixed in tank body (1) by diagonal ligament frame (22), and described tank body (1) is supported on horizontal plane by support (3).
5. the sewage dephosphorization equipment based on media adsorbs according to claim 4, is characterized in that: described in empty on pipe (12) exhaust-valve (21) be housed.
6. as claimed in claim 5 based on a phosphorus removing method for the sewage dephosphorization equipment of media adsorbs, it is characterized in that: (a), preparation, be that the quartz sand (25) of 0.5cm-1.5cm is filled in tank body (1) by particle diameter, the height that quartz sand (25) loads accounts for 2/3 to 3/4 of tank body height, (b), cleaning, open intake pump (5), to intake in baffle-box (4) and fill tap water, tap water flows into tank body (1) by water inlet pipe (6) and water distributing tray (7) successively, after tap water fills up tank body (1) gradually, tank body (1) is discharged from rising pipe (11), wash and be attached to quartz sand (25) surface and the sand be entrained in quartz sand (25) and fine solid particle, the amount of the tap water flowed in tank body (1) is 1 times of tank body (1) volume to 4 times, sample from water outlet sampling valve (24) simultaneously, detect the total suspended matter flowed out in water, when the total suspended matter TSS flowing out water is less than 15mg/L, close intake pump (5), stop cleaning, the modification of (c), quartz sand: open dosing pump (9), will be stored in explosive box (8) interior concentration is the FeCl of 32%-35%
3solution is sent in tank body (1) by water inlet pipe (6), open intake pump (5) simultaneously, the tap water will intake in baffle-box (4) is sent in tank body (1) by water inlet pipe (6), by water inlet sampling valve (10) to the water sampling entered in tank body (1), make the Fe in flooding velocity
3+concentration remains on 4mg/L-6mg/L, simultaneously, open air compressor (17), the air flow quantity entered in tank body (1) is made to be 4L/min-6L/min, treated water is all back in water baffle-box (4) from the return pipe (19) rising pipe (11), the quartz sand (25) in tank body (1) and the Fe in water inlet
3+after contact, form ferriferous oxide coating on quartz sand (25) surface, become ferriferous oxide Modified Quartz Sand, continue aforesaid operations after 48 hours, from water outlet sampling valve (24), detect the Fe in water outlet
3+concentration, as the Fe in water outlet
3+concentration when being greater than 4mg/L, close dosing pump (9), intake pump (5) and air compressor (17), quartz sand modification completes, (d), working stage: open dosing pump (9), will be stored in explosive box (8) interior concentration is the FeCl of 32%-35%
3solution is sent in tank body (1) by water inlet pipe (6), open intake pump (5) simultaneously, the sewage will intake in baffle-box (4) is sent in tank body (1) by water inlet pipe (6), to the sewage sampling entered in tank body (1) from water inlet sampling valve (10), make Fe in flooding velocity
3+concentration remain on 4mg/L-6mg/L, simultaneously, open air compressor (17), the air flow quantity entered in tank body (1) is made to be 4L/min-6L/min, pressurized air is delivered to the bottom of tank body (1) by air-supply duct (18), after pressurized air is discharged from air-supply duct (18), the quartz sand (25) of tank body (1) bottom to be brought in washed-out sand air lift siphunculus (20) and to move upward along washed-out sand air lift siphunculus (20), the surface attachment quartz sand of phosphorus containing sludge (25) mutual collision friction in the process moved upward with compressed-air actuated air-flow, and after discharge washed-out sand air lift siphunculus (20), with sand-washing device lid (29) collision friction, the phosphorus containing sludge being attached to quartz sand (25) surface peels off in collision friction, flow into settling tank (27) by the spoil disposal weir (14) of sand-washing device (13) sidewall, then enter in mud holding tank (16) through shore pipe (15), the quartz sand (25) washing phosphorus containing sludge off falls into tank body (1) through leaking sandpipe (26), the sewage processed is discharged by rising pipe (11), the phosphorus content of discharging water is detected from water outlet sampling valve (24) sampling, when the phosphorus content of discharging water is less than 0.5mg/L, reach emission standard, sewage is discharged tank body (1), when the phosphorus content of discharging water is greater than 0.5mg/L, discharges water and be all back in water baffle-box (4) by return pipe (19), until when the phosphorus content of discharging water is less than 0.5mg/L, sewage is discharged tank body (1).
7. phosphorus removing method as claimed in claim 6, is characterized in that: described sewage refers to after the process of municipal wastewater treatment facility, and pH is 6.0 to 8.0, total suspended matter is less than 15mg/L and total phosphorus concentration is greater than the sewage of 0.5mg/L.
8. phosphorus removing method as claimed in claim 7, it is characterized in that: when dephosphorization equipment needs repairing, close dosing pump (9), intake pump (5) and air compressor (17), then open exhaust-valve (21), the quartz sand (25) in tank body (1) and sewage are discharged tank body (1) by emptying pipe (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410554671.2A CN104261508B (en) | 2014-10-17 | 2014-10-17 | Based on sewage dephosphorization equipment and the method for media adsorbs |
Applications Claiming Priority (1)
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| JPH10263527A (en) * | 1997-03-27 | 1998-10-06 | Takei Hiromi | Recycle system of discharge water and recycle system of car washing waste water |
| CN102372391A (en) * | 2010-08-13 | 2012-03-14 | 中国石油化工股份有限公司 | Method and system for removing phosphorous in high-calcium content sewage through combination of biological method and chemical method |
| CN202519126U (en) * | 2012-01-09 | 2012-11-07 | 济南大学 | Square aerated biofilter reactor integrating denitrification dephosphorization functions |
| CN204111363U (en) * | 2014-10-17 | 2015-01-21 | 北京昊业同宇科技有限公司 | Based on the sewage dephosphorization equipment of media adsorbs |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10263527A (en) * | 1997-03-27 | 1998-10-06 | Takei Hiromi | Recycle system of discharge water and recycle system of car washing waste water |
| CN102372391A (en) * | 2010-08-13 | 2012-03-14 | 中国石油化工股份有限公司 | Method and system for removing phosphorous in high-calcium content sewage through combination of biological method and chemical method |
| CN202519126U (en) * | 2012-01-09 | 2012-11-07 | 济南大学 | Square aerated biofilter reactor integrating denitrification dephosphorization functions |
| CN204111363U (en) * | 2014-10-17 | 2015-01-21 | 北京昊业同宇科技有限公司 | Based on the sewage dephosphorization equipment of media adsorbs |
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