CN209957551U - Reclaimed water treatment device - Google Patents
Reclaimed water treatment device Download PDFInfo
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- CN209957551U CN209957551U CN201920600094.4U CN201920600094U CN209957551U CN 209957551 U CN209957551 U CN 209957551U CN 201920600094 U CN201920600094 U CN 201920600094U CN 209957551 U CN209957551 U CN 209957551U
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Abstract
The utility model provides a reclaimed water treatment facilities, includes pretreatment unit, ultrafiltration portion and reverse osmosis portion, its characterized in that: the device also comprises a doser and a liquid medicine circulating mechanism, wherein the doser is arranged on a pipeline connecting the ultrafiltration part and the reverse osmosis part, an inlet of the liquid medicine circulating mechanism is respectively communicated with an outlet of the ultrafiltration part and an outlet of the reverse osmosis part through pipelines, and an outlet of the liquid medicine circulating mechanism is respectively communicated with an inlet of the ultrafiltration part and an inlet of the reverse osmosis part through pipelines; the utility model has the advantages that: the medicament can remove suspended matters and toxic substances in the water body, deodorize and decolor, reduce foams, remove sludge, improve water quality and reduce water body pollution; the liquid medicine circulation mechanism enables the reclaimed water added with the medicament to circularly flow in the device, fully utilizes the unreacted medicament, reduces the treatment cost, reduces the pollution discharge and is more environment-friendly.
Description
Technical Field
The utility model relates to a water purification technology field especially indicates a normal water treatment device and processing method.
Background
The original chinese utility model patent of application number CN201420503295.X name "pure water treatment facilities" of applicant discloses a pure water treatment facilities, including the former water tank of pipe connection in proper order, the former water pump, precision filter, ultrafiltration device, ultrafiltration water tank, the high-pressure pump, RO device and pure water case, be equipped with backwash water pump and pure water elevator pump on ultrafiltration water tank's delivery port, backwash water pump is connected with ultrafiltration device's outlet conduit, be equipped with backwash charge sterilizing equipment between backwash water pump and ultrafiltration device, pure water elevator pump links to each other with the high-pressure pump, be equipped with between pure water elevator pump and the high-pressure pump and hinder dirty charge sterilizing equipment, be connected with the washing water tank on the RO device, washing water pump and washing filter. The ultrafiltration device is provided with 6 groups of ultrafiltration membrane filters, the filtration speed is high, and the water yield is high; the backwashing dosing and sterilizing device and the scale inhibition dosing and sterilizing device are arranged, so that the sterilizing effect is achieved, the possibility of secondary pollution is reduced, and the purity and the speed of the effluent are improved. The utility model discloses a rational in infrastructure, installation maintenance convenience, area are little, and the pure water purity that makes is high, can be used to 10T pure water equipment. However, the device has low utilization rate of scale-inhibiting agents and high production cost, so the structure of the device needs to be further improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a normal water treatment device that can improve normal water quality of water, fully filter aquatic impurity, realize the treated water recovery and recycle is provided to above-mentioned prior art current situation.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: this normal water treatment facilities, including preliminary treatment portion, ultrafiltration portion and reverse osmosis portion, the low pressure end of reverse osmosis portion is linked together with the water pipeline, the high pressure end and the discharge line of reverse osmosis portion are linked together its characterized in that: the device also comprises a doser and a liquid medicine circulating mechanism, wherein the doser is arranged on a pipeline connecting the ultrafiltration part and the reverse osmosis part, an inlet of the liquid medicine circulating mechanism is respectively communicated with an outlet of the ultrafiltration part and a discharge pipeline of the reverse osmosis part through pipelines, and an outlet of the liquid medicine circulating mechanism is respectively communicated with an inlet of the ultrafiltration part and an inlet of the reverse osmosis part through pipelines;
the liquid medicine circulation mechanism comprises a liquid storage tank, a circulating pump and an impurity filter, wherein a liquid inlet of the liquid storage tank is communicated with an outlet of the ultrafiltration part and a discharge pipeline of the reverse osmosis part through pipelines respectively, the liquid inlet of the liquid storage tank is communicated with the impurity filter through the circulating pump, and an outlet of the impurity filter is communicated with an inlet of the ultrafiltration part and an inlet of the reverse osmosis part through pipelines respectively.
In a further improvement, the filter element of the impurity filter can be preferably a PPF filter element with the pore diameter of 5 μm.
As a modification, two booster pumps are preferably arranged between the outlet of the doser and the inlet of the reverse osmosis part in series, and the water pressure flowing to the inlet of the reverse osmosis part is twice of the water pressure at the outlet of the doser.
The pretreatment part comprises a quartz sand filter and an active carbon filter, the quartz sand filter and the active carbon filter are arranged in series, vent pipelines capable of introducing compressed gas are arranged in the quartz sand filter and the active carbon filter, pipeline valves for controlling the vent pipelines to be opened and closed are arranged on the vent pipelines, and when the quartz sand filter or the active carbon filter is blocked, compressed gas can be introduced into the corresponding vent pipelines to dredge the pipelines.
The pretreatment part is characterized in that the pretreatment part further comprises a precision filter, a first branch pipe is arranged on a connecting pipeline of the activated carbon filter and the ultrafiltration part, the precision filter is arranged on the first branch pipe, an electric valve capable of opening and closing the first branch pipe is arranged on the first branch pipe, and a valve capable of opening and closing the connecting pipeline is arranged on the connecting pipeline connected with the first branch pipe in parallel.
In a further improvement, the filter element of the precision filter can be preferably a PPF filter element with the pore diameter of 5 μm.
As an improvement, the ultrafiltration part can be preferably formed by connecting N ultrafiltration filters in parallel, the water outlet of the ultrafiltration part is communicated with the intermediate water tank, the water outlet of the intermediate water tank is communicated with the doser, and N is a natural number not less than 1.
As an improvement, the reverse osmosis part can be preferably formed by connecting M primary RO reverse osmosis devices in parallel with L secondary RO reverse osmosis devices in parallel in series, the water outlet at the low-pressure end of the reverse osmosis part is communicated with a purified water tank, and the M, L are natural numbers not less than 1.
The water inlet of the pretreatment part can be preferably communicated with a source water tank into which reclaimed water to be treated can be introduced, a first outlet and a second outlet are arranged on the secondary RO reverse osmosis device, the first outlet is communicated with the purified water tank, the second outlet is communicated with the discharge pipeline, a circulating branch pipe is further arranged on the discharge pipeline, and the second outlet is communicated with the source water tank through the circulating branch pipe.
As an improvement, the treatment method of the reclaimed water treatment device comprises the following steps:
firstly, introducing reclaimed water to be treated into a pretreatment part to filter impurities;
secondly, filtering impurities in the reclaimed water, and then feeding the reclaimed water into an ultrafiltration part for secondary filtration;
thirdly, the reclaimed water after the secondary filtration enters a reverse osmosis part for water softening;
fourthly, after the reclaimed water is softened, the reclaimed water is divided into fresh water and concentrated water in the reverse osmosis part, the fresh water enters the water using pipeline from the reverse osmosis part, and the concentrated water enters the discharge pipeline;
the method is characterized in that: in the third step, adding a medicament into the reclaimed water subjected to secondary filtration by a medicament adding device at a set speed, and feeding mixed liquid formed after adding the medicament into a reverse osmosis part for water softening;
in the fourth step, part of the concentrated water leaving from the reverse osmosis part and part of the water leaving from the ultrafiltration part after the secondary filtration are returned to the ultrafiltration part and the reverse osmosis part through the chemical liquid circulation mechanism for circulation filtration.
Compared with the prior art, the utility model has the advantages of: the chemical feeder adds the chemical into the reclaimed water to be treated, and the chemical can remove suspended matters and toxic substances in the water body, deodorize and decolor, reduce foams, remove sludge, improve water quality and reduce water body pollution; the agent can remove carbonate, sulfate and Ca in water2+、Mg2+Chemical scaling of ions reduces damage to a reverse osmosis membrane in the reverse osmosis part, and prolongs the service life of the reverse osmosis membrane; the reclaimed water filtered by the ultrafiltration part and the reverse osmosis part can enter the liquid medicine circulating mechanism, the liquid medicine circulating mechanism enables the reclaimed water added with the medicament to circularly flow in the device, the unreacted medicament is fully utilized, the treatment cost is reduced, the pollution emission is reduced, and the device is more green and environment-friendly.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1, the reclaimed water treatment device of the embodiment comprises a pretreatment part, an ultrafiltration part and a reverse osmosis part, wherein the low-pressure end of the reverse osmosis part is communicated with a water using pipeline, the high-pressure end of the reverse osmosis part is communicated with a discharge pipeline 92, the device further comprises a medicine adding device 6 and a liquid medicine circulating mechanism, the medicine adding device 6 is arranged on the pipeline connecting the ultrafiltration part and the reverse osmosis part, the inlet of the liquid medicine circulating mechanism is respectively communicated with the outlet of the ultrafiltration part and the discharge pipeline 92 of the reverse osmosis part through pipelines, and the outlet of the liquid medicine circulating mechanism is respectively communicated with the inlet of the ultrafiltration part and the inlet of the reverse osmosis part through pipelines; the liquid medicine circulating mechanism comprises a liquid storage tank 7, a circulating pump 71 and an impurity filter 72, wherein a liquid inlet of the liquid storage tank 7 is respectively communicated with an outlet of the ultrafiltration part and a discharge pipeline 92 of the reverse osmosis part through pipelines, a liquid inlet of the liquid storage tank 7 is communicated with the impurity filter 72 through the circulating pump 71, and an outlet of the impurity filter 72 is respectively communicated with an inlet of the ultrafiltration part and an inlet of the reverse osmosis part through pipelines. The filter element of the impurity filter 72 is a PPF filter element with the aperture of 5 mu m. Two booster pumps 61 are arranged between the outlet of the doser 6 and the inlet of the reverse osmosis part in series, and the water pressure at the inlet of the reverse osmosis part is twice of the water pressure at the outlet of the doser 6. The medicine adding device 6 can pass through the medicine to the pipeline connecting the ultrafiltration part and the reverse osmosis part according to the set speed, the medicine adding device 6 can adopt the electric control medicine adding speed to add the medicine according to the set speed, for example, a medicine adding gate which can be opened and closed by the control of a PLC is arranged on a medicine adding port of the medicine adding device, and the medicine adding speed can also be controlled by a pure mechanical mechanism, if the medicine adding valve is controlled by a ratchet transmission structure to be opened and closed circularly, ratchets on a ratchet wheel are arranged at intervals, and the time when the ratchet wheel rotates to the interval distance between adjacent ratchets is the interval time when the medicine adding valve is opened, no matter the electric control or the pure mechanical structure control, the specific structure belongs to the prior art. The specific components of the medicament in the doser are prior art and will not be described in detail.The added medicament can remove suspended matters and toxic substances in the water body, deodorize and decolor, reduce foams, remove sludge, improve water quality and reduce water body pollution; the agent can remove carbonate, sulfate and Ca in water2+、Mg2+The chemical scaling of ions reduces the damage to the reverse osmosis membrane in the reverse osmosis part and prolongs the service life of the reverse osmosis membrane.
The pretreatment portion comprises a quartz sand filter 1 and an active carbon filter 2, the quartz sand filter 1 and the active carbon filter 2 are arranged in series, vent pipelines 11 capable of leading in compressed gas are arranged in the quartz sand filter 1 and the active carbon filter 2, pipeline valves 12 for controlling the vent pipelines 11 to be opened and closed are arranged on the vent pipelines 11, and when the quartz sand filter 1 or the active carbon filter 2 is blocked, compressed gas dredging pipelines can be led in the corresponding vent pipelines 11. The pretreatment part further comprises a precision filter 3, a first branch pipe 51 is arranged on the connecting pipeline 5 of the activated carbon filter 2 and the ultrafiltration part, the precision filter 3 is arranged on the first branch pipe 51, an electric valve 52 capable of opening and closing the first branch pipe 51 is arranged on the first branch pipe 51, and a valve 53 capable of opening and closing the connecting pipeline 5 is arranged on the connecting pipeline 5 which is connected with the first branch pipe 51 in parallel. The filter element of the precision filter 3 is a PPF filter element with the aperture of 5 mu m.
The ultrafiltration part is formed by connecting N ultrafilters 4 in parallel, the water outlet of the ultrafiltration part is communicated with the middle water tank 41, the water outlet of the middle water tank 41 is communicated with the doser 6, and N is a natural number not less than 1. An intermediate water pump 42 is further arranged between the intermediate water tank 41 and the doser 6, and the intermediate water pump 42 sends water in the intermediate water tank 41 into the doser for dosing.
The reverse osmosis part is formed by connecting M parallel first-stage RO reverse osmosis devices 8 and L parallel second-stage RO reverse osmosis devices 81 in series, a water outlet at the low-pressure end of the reverse osmosis part is communicated with a purified water tank 9, and M, L are natural numbers not less than 1. The water inlet of preliminary treatment portion is linked together with the source water tank 91 that can let in the well water of treating, has first export and second export on second grade RO reverse osmosis unit 81, first export is linked together with clean water tank 9, the second export is linked together with discharge piping 92, still is provided with the circulation on discharge piping 92 and divides pipe 93, the second export is linked together through circulation branch pipe 93 and source water tank 91. The specific structure of the ultrafilter 4, the primary RO reverse osmosis unit 8 and the secondary RO reverse osmosis unit 81 is well known in the art and will not be described in detail. The source water tank 91 supplies water to the preprocessing part through two water pumps connected in parallel, the two water pumps connected in parallel intermittently work, and the other water pump is suspended when one water pump works, so that the water source of the source water tank 91 is ensured to continuously enter the preprocessing part. Between source water tank 91 and preliminary treatment portion, between preliminary treatment portion and the ultrafiltration portion, between doser 6 and booster pump 61, between booster pump 61 and the reverse osmosis portion, all be provided with manometer 13 on the pipeline between reverse osmosis portion and the water purification case 9. The pipeline can be also provided with a flowmeter and a valve.
The reclaimed water treatment method of the reclaimed water treatment device of the embodiment comprises the following steps,
firstly, introducing reclaimed water to be treated into a pretreatment part to filter impurities;
secondly, filtering impurities in the reclaimed water, and then feeding the reclaimed water into an ultrafiltration part for secondary filtration;
thirdly, the reclaimed water after the secondary filtration enters a reverse osmosis part for water softening;
fourthly, after the reclaimed water is softened, the reclaimed water is divided into fresh water and concentrated water in the reverse osmosis part, the fresh water enters the water using pipeline from the reverse osmosis part, and the concentrated water enters the discharge pipeline 92;
in the third step, adding a medicament into the reclaimed water subjected to secondary filtration by a medicament adding device 6 at a set speed, and feeding mixed liquid formed after adding the medicament into a reverse osmosis part for water softening;
in the fourth step, part of the concentrated water leaving from the reverse osmosis part and part of the water leaving from the ultrafiltration part after the secondary filtration are returned to the ultrafiltration part and the reverse osmosis part through the chemical liquid circulation mechanism for circulation filtration.
The reclaimed water is the water to be purified, and the reclaimed water mainly refers to the non-drinking water which can be reused in a certain range and reaches a certain water quality standard after being treated in a community or a determined large building system in a city. The water quality is used as a distinguishing standard, and the water quality is between the domestic tap water (upper water) and the sewage (lower water) discharged into the pipeline, so the water quality is named as 'middle water'. The reclaimed water is mainly used for flushing toilets, irrigating greenbelts, trees, cleaning roads, flushing vehicles, infrastructure construction, water spraying ponds and other water which can receive the water quality standard.
Claims (9)
1. The utility model provides a normal water treatment facilities, includes preliminary treatment portion, ultrafiltration portion and reverse osmosis portion, the low pressure end of reverse osmosis portion is linked together with the water pipeline, the high pressure end of reverse osmosis portion is linked together with discharge line (92), its characterized in that: the device also comprises a medicine adding device (6) and a liquid medicine circulating mechanism, wherein the medicine adding device (6) is arranged on a pipeline connecting the ultrafiltration part and the reverse osmosis part, an inlet of the liquid medicine circulating mechanism is respectively communicated with an outlet of the ultrafiltration part and a discharge pipeline (92) of the reverse osmosis part through pipelines, and an outlet of the liquid medicine circulating mechanism is respectively communicated with an inlet of the ultrafiltration part and an inlet of the reverse osmosis part through pipelines; the liquid medicine circulation mechanism comprises a liquid storage tank (7), a circulating pump (71) and an impurity filter (72), wherein a liquid inlet of the liquid storage tank (7) is communicated with an outlet of the ultrafiltration part and a discharge pipeline (92) of the reverse osmosis part through pipelines respectively, a liquid inlet of the liquid storage tank (7) is communicated with the impurity filter (72) through the circulating pump (71), and an outlet of the impurity filter (72) is communicated with an inlet of the ultrafiltration part and an inlet of the reverse osmosis part through pipelines respectively.
2. The reclaimed water treatment apparatus according to claim 1, characterized in that: the filter element of the impurity filter (72) is a PPF filter element with the aperture of 5 mu m.
3. The reclaimed water treatment apparatus according to claim 1, characterized in that: two booster pumps (61) are connected in series between the outlet of the doser (6) and the inlet of the reverse osmosis part, and the water pressure at the inlet of the reverse osmosis part is twice of the water pressure at the outlet of the doser (6).
4. The reclaimed water treatment apparatus according to claim 1, characterized in that: the pretreatment portion comprises a quartz sand filter (1) and an activated carbon filter (2), the quartz sand filter (1) and the activated carbon filter (2) are connected in series, an air duct (11) capable of introducing compressed gas is arranged in each of the quartz sand filter (1) and the activated carbon filter (2), a duct valve (12) for controlling the opening and closing of the air duct (11) is arranged on the air duct (11), and when the quartz sand filter (1) or the activated carbon filter (2) is blocked, a compressed gas dredging duct can be introduced into the corresponding air duct (11).
5. The reclaimed water treatment apparatus according to claim 4, characterized in that: the pretreatment portion further comprises a precision filter (3), a first branch pipe (51) is arranged on a connecting pipeline (5) of the activated carbon filter (2) and the ultrafiltration portion, the precision filter (3) is arranged on the first branch pipe (51), an electric valve (52) capable of opening and closing the first branch pipe (51) is arranged on the first branch pipe (51), and a valve (53) capable of opening and closing the connecting pipeline (5) is arranged on the connecting pipeline (5) which is connected with the first branch pipe (51) in parallel.
6. The reclaimed water treatment apparatus according to claim 5, characterized in that: the filter element of the precision filter (3) is a PPF filter element with the aperture of 5 mu m.
7. The reclaimed water treatment apparatus according to claim 1, characterized in that: the ultrafiltration part is formed by connecting N ultrafilters (4) in parallel, the water outlet of the ultrafiltration part is communicated with the middle water tank (41), the water outlet of the middle water tank (41) is communicated with the doser (6), and N is a natural number not less than 1.
8. The reclaimed water treatment apparatus according to claim 1, characterized in that: the reverse osmosis part is formed by M one-level RO reverse osmosis units (8) connected in parallel and L two-level RO reverse osmosis units (81) connected in parallel in series, the water outlet of the low-pressure end of the reverse osmosis part is communicated with a purified water tank (9), and M, L is a natural number not less than 1.
9. The reclaimed water treatment apparatus according to claim 8, wherein: the water inlet of preliminary treatment portion is linked together with source water tank (91) that can let in the well water of treating, has first export and second export on second grade RO reverse osmosis ware (81), first export is linked together with water purification case (9), the second export is linked together with discharge pipe (92), still is provided with circulation on discharge pipe (92) and divides pipe (93), the second export is linked together with source water tank (91) through circulation branch pipe (93).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920600094.4U CN209957551U (en) | 2019-04-28 | 2019-04-28 | Reclaimed water treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920600094.4U CN209957551U (en) | 2019-04-28 | 2019-04-28 | Reclaimed water treatment device |
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| Publication Number | Publication Date |
|---|---|
| CN209957551U true CN209957551U (en) | 2020-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920600094.4U Active CN209957551U (en) | 2019-04-28 | 2019-04-28 | Reclaimed water treatment device |
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| CN (1) | CN209957551U (en) |
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- 2019-04-28 CN CN201920600094.4U patent/CN209957551U/en active Active
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