CN212102282U - Nickel-containing wastewater treatment system - Google Patents
Nickel-containing wastewater treatment system Download PDFInfo
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- CN212102282U CN212102282U CN201921909520.9U CN201921909520U CN212102282U CN 212102282 U CN212102282 U CN 212102282U CN 201921909520 U CN201921909520 U CN 201921909520U CN 212102282 U CN212102282 U CN 212102282U
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Abstract
The utility model relates to a processing system of nickeliferous waste water, including equalizing basin, one-level reaction tank, one-level coagulation basin, one-level flocculation basin, one-level sedimentation tank, second grade reaction tank, second grade coagulation basin, second grade flocculation basin, second grade sedimentation tank, sand filtration jar, membrane cisterna, pH equalizing basin and the resin jar of fluid intercommunication in proper order. The utility model discloses a processing system is suitable for, safe, reliable, to nickeliferous waste water quality of water characteristics, and the optimal configuration retrenches operation flow, convenient to use, total nickel index upper limit before intaking is less than or equal to 1000mg/L, and pH index upper limit 5 ~ 6 uses this processing system back total nickel index upper limit less than or equal to 0.08mg/L, and pH index upper limit 7 ~ 9 removes the nickel effect good.
Description
Technical Field
The utility model relates to a processing system of waste water, concretely relates to processing system of nickeliferous waste water.
Background
The electroplating industry plays an important role in the economic development of China, a large amount of wastewater can be generated in the production process, the reasonability of classification and collection of the wastewater is an important condition for whether the wastewater can stably reach the standard for a long time or not, and is a key for whether the wastewater can reach the standard by full factors or not, for example: when the nickel-containing wastewater is mixed with other wastewater, the difficulty of wastewater treatment is increased, the operation cost of wastewater treatment is greatly increased, and even the normal wastewater treatment standard discharge is influenced. Therefore, at present, most manufacturers adopt the principle of independent treatment for treating nickel-containing wastewater. The traditional nickel-containing wastewater generally adopts a chemical sedimentation method, and the workshop wastewater automatically flows into a regulating reservoir to homogenize the quality and quantity of water. The wastewater is lifted to a pH adjusting tank by a corrosion-resistant lifting pump, and the precipitate of nickel hydroxide formed by heavy metal nickel ions is removed under alkaline adjustment.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's shortcoming, provide a processing system of nickeliferous waste water, including equalizing basin, one-level reaction tank, one-level coagulating basin, one-level flocculation basin, one-level sedimentation tank, second grade reaction tank, second grade coagulating basin, second grade flocculation basin, second grade sedimentation tank, sand filtration jar, membrane cisterna, pH equalizing basin and the resin jar of fluid intercommunication in proper order. The utility model discloses a processing system is suitable for, safe, reliable, to nickeliferous waste water quality of water characteristics, and the optimal configuration retrenches operation flow, convenient to use, total nickel index upper limit before intaking is less than or equal to 1000mg/L, and pH index upper limit 5 ~ 6 uses this processing system back total nickel index upper limit less than or equal to 0.08mg/L, and pH index upper limit 7 ~ 9 removes the nickel effect good.
The utility model discloses a realize through following technical scheme:
the utility model provides a nickel-containing wastewater's processing system, including equalizing basin, one-level reaction tank, one-level coagulation basin, one-level flocculation basin, one-level sedimentation tank, second grade reaction tank, second grade coagulation basin, second grade flocculation basin, second grade sedimentation tank, sand filtration jar, membrane cisterna, pH equalizing basin and the resin jar of fluid intercommunication in proper order.
Preferably, at least one of the following technical features is also included:
1) a collecting tank is arranged in front of the regulating tank, and the collecting tank, the regulating tank and the primary reaction tank are sequentially in fluid communication;
2) an intermediate water tank is also arranged between the secondary sedimentation tank and the sand filter tank, and the secondary sedimentation tank, the intermediate water tank and the sand filter tank are sequentially in fluid communication;
3) still be equipped with between membrane pond and the pH equalizing basin and produce the pond, membrane pond, produce pond and pH equalizing basin fluid intercommunication in proper order.
More preferably, in the characteristic 3), a first backwashing pipeline is further included, and the water production tank is in fluid communication with the membrane tank through the first backwashing pipeline.
Preferably, the device further comprises a pH adjusting tank and a recapture agent tank, wherein the resin tank, the pH adjusting tank and the recapture agent tank are sequentially communicated in a fluid mode.
More preferably, a discharge water tank is further provided after the recapture tank, the recapture tank and the discharge water tank being in serial fluid communication.
Even more preferably, the sand filter also comprises a second backwashing pipeline, and the discharge water tank is communicated with the sand filter tank through the second backwashing pipeline.
Still further more preferably, the system further comprises a sludge tank and a filter press, wherein the primary sedimentation tank, the secondary sedimentation tank and the sand filter tank are in fluid communication with the sludge tank, and the sludge tank is in fluid communication with the filter press; the sludge tank is used for storing sludge from the primary sedimentation tank and the secondary sedimentation tank and backwashing water of the sand filter tank; the filter press is used for filter-pressing the sludge from the sludge tank.
Still further more preferably, at least one of the following technical features is also included:
1) the filter press is in fluid communication with the conditioning tank for returning the pressure filtrate from the filter press to the conditioning tank, or the filter press is in fluid communication with the collection tank for returning the pressure filtrate from the filter press to the collection tank;
2) the treatment system also comprises a sludge dryer used for drying the filter-pressing sludge from the filter press; the filter press is in fluid communication with the sludge dryer.
Further preferably, the system further comprises an online nickel detection device, wherein the online nickel detection device is used for detecting whether the nickel content in the wastewater in the discharge water tank reaches the standard, discharging the wastewater when the nickel content reaches the standard, and refluxing the wastewater to the regulating tank or the water collecting tank when the nickel content does not reach the standard; the discharging water tank, the online nickel detection device and the regulating tank are sequentially communicated with each other by fluid, or the discharging water tank, the online nickel detection device and the water collecting tank are sequentially communicated with each other by fluid.
Preferably, at least one of the following technical features is also included:
1) the treatment system also comprises an alkali liquor dosing component used for adding alkali liquor into the primary reaction tank;
2) the treatment system also comprises a nickel removing agent dosing part which is used for adding a nickel removing agent into the secondary reaction tank;
3) the treatment system also comprises a coagulant adding part used for adding coagulant into the primary coagulation tank and the secondary coagulation tank;
4) the treatment system also comprises a flocculant dosing part used for adding a flocculant into the primary flocculation tank and the secondary flocculation tank.
The utility model provides a nickel-containing wastewater's processing system, including equalizing basin, one-level reaction tank, one-level coagulation basin, one-level flocculation basin, one-level sedimentation tank, second grade reaction tank, second grade coagulation basin, second grade flocculation basin, second grade sedimentation tank, sand filtration jar, membrane cisterna, pH equalizing basin and the resin jar of fluid intercommunication in proper order. The utility model discloses a processing system is suitable for, safe, reliable, to nickeliferous waste water quality of water characteristics, and the optimal configuration retrenches operation flow, convenient to use, total nickel index upper limit before intaking is less than or equal to 1000mg/L, and pH index upper limit 5 ~ 6 uses this processing system back total nickel index upper limit less than or equal to 0.08mg/L, and pH index upper limit 7 ~ 9 removes the nickel effect good.
Drawings
FIG. 1 is a schematic diagram of a nickel-containing wastewater treatment system.
Reference numerals:
1 regulating tank
2 first-stage reaction tank
3 first-stage coagulation tank
4 first-stage flocculation tank
5 first-stage sedimentation tank
6 second-stage reaction tank
7 two-stage coagulation tank
8 second-stage flocculation tank
9 two-stage sedimentation tank
10 sand filtering tank
11 membrane pool
12 pH adjusting tank
13 resin pot
14 water collecting tank
15 middle water pool
16 water producing pool
17 pH adjusting pool
18 heavy catching agent tank
19 drainage pool
20 sludge pool
21 pressure filter
22 sludge dryer
23 on-line nickel detection device
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.
It is to be understood that the processing equipment or apparatus not specifically identified in the following examples is conventional in the art.
The utility model provides a nickel wastewater's processing system, as shown in figure 1, includes equalizing basin 1, one-level reaction tank 2, one-level coagulating basin 3, one-level flocculation basin 4, one-level sedimentation tank 5, second grade reaction tank 6, second grade coagulating basin 7, second grade flocculation basin 8, second grade sedimentation tank 9, sand filtration jar 10, membrane cisterna 11, pH equalizing basin 12 and resin tank 13 that fluid intercommunication in proper order.
The regulating reservoir is used for balancing the quality and the quantity of water. The first-stage reaction tank is used for adding alkali to adjust the pH value of the water body. The primary coagulation tank is used for primary coagulation of a water body. The primary flocculation tank is used for primary flocculation on a water body. The primary sedimentation tank is used for carrying out primary sedimentation on a water body. And the secondary reaction tank is used for adding a nickel removing agent to further remove nickel. And the secondary coagulation tank is used for carrying out secondary coagulation on the water body. And the secondary flocculation tank is used for carrying out secondary flocculation on the water body. And the secondary sedimentation tank is used for carrying out secondary sedimentation on the water body.
The sand filter tank is used for advanced treatment, quartz sand or activated carbon is generally used in the sand filter tank, and water is filtered from a sand filter tank medium through water flow to remove sludge and suspended matters in a water body.
The membrane tank is a water treatment device combined by a membrane separation unit and a biological treatment unit, can be a membrane bioreactor in the prior art, can be divided into a flat membrane, a tubular membrane, a hollow fiber membrane and the like according to the structure of the membrane, can be divided into an ultrafiltration membrane, a microfiltration membrane, a nanofiltration membrane, a reverse osmosis membrane and the like according to the membrane aperture, and is preferably an ultrafiltration membrane tank.
The resin tank further removes nickel in the wastewater by utilizing the adsorption and exchange action of resin in the resin tank, wherein the resin is nickel ion adsorption exchange resin.
In a preferred implementation, at least one of the following technical features is also included:
1) a water collecting tank 14 is also arranged in front of the regulating tank, and the water collecting tank 14, the regulating tank and the primary reaction tank are sequentially in fluid communication;
2) an intermediate water tank 15 is also arranged between the secondary sedimentation tank 9 and the sand filter tank 10, and the secondary sedimentation tank 9, the intermediate water tank 15 and the sand filter tank 10 are sequentially in fluid communication;
3) a water producing pool 16 is also arranged between the membrane pool 11 and the pH adjusting pool 12, and the membrane pool 11, the water producing pool 16 and the pH adjusting pool 12 are sequentially in fluid communication.
In a preferred implementation, the feature 3) further comprises a first backwashing pipeline, and the water production tank 16 is in fluid communication with the membrane tank 11 through the first backwashing pipeline.
In a preferred embodiment, the device further comprises a pH adjusting tank 17 and a recapture agent tank 18, wherein the resin tank 13, the pH adjusting tank 17 and the recapture agent tank 18 are sequentially communicated in a fluid mode. The recapture agent tank further removes nickel in the wastewater by utilizing the recapture agent in the recapture agent tank.
In a preferred embodiment, a drain sump 19 is provided after the recapture tank 18, and the recapture tank 18 and drain sump 19 are in fluid communication in series.
In a preferred embodiment, a second backwash conduit is included through which the drain sump 19 is in fluid communication with the sand filter tank 10.
In a preferred implementation, the system further comprises a sludge tank 20 and a filter press 21, wherein the primary sedimentation tank 5, the secondary sedimentation tank 9 and the sand filter tank 10 are in fluid communication with the sludge tank 20, and the sludge tank 20 is in fluid communication with the filter press 21; the sludge tank 20 is used for storing sludge from the primary sedimentation tank 5 and the secondary sedimentation tank 9 and backwashing water of the sand filtration tank 10; the filter press 21 is used for filter-pressing sludge from the sludge tank 20.
In a preferred implementation, at least one of the following technical features is also included:
1) the filter press 21 is in fluid communication with the conditioning tank for returning the pressure filtrate from the filter press 21 to the conditioning tank, or the filter press 21 is in fluid communication with the sump 14 for returning the pressure filtrate from the filter press 21 to the sump 14; the filter press can be a plate and frame filter press;
2) the treatment system further comprises a sludge dryer 22 for drying filter-pressed sludge from the filter press 21; the filter press 21 is in fluid communication with the sludge dryer 22.
In a preferred implementation, the system further comprises an online nickel detection device 23, which is used for detecting whether the nickel content in the wastewater in the discharge water tank reaches the standard, discharging the wastewater when the nickel content reaches the standard, and returning the wastewater to the regulating tank or the water collecting tank 14 when the nickel content does not reach the standard; the discharge water tank 19, the online nickel detection device 23 and the regulating tank are sequentially in fluid communication, or the discharge water tank 19, the online nickel detection device 23 and the water collection tank 14 are sequentially in fluid communication. The on-line nickel detection device can be various devices in the field, which can realize on-line detection of the nickel content in the wastewater in the discharge water pool, for example, the on-line nickel detection device can be an HMA-TNI total nickel heavy metal detector/on-line analyzer.
In a preferred implementation, at least one of the following technical features is also included:
1) the treatment system also comprises an alkali liquor dosing component used for adding alkali liquor into the primary reaction tank;
2) the treatment system also comprises a nickel removing agent dosing part which is used for adding a nickel removing agent into the secondary reaction tank 6;
3) the treatment system also comprises a coagulant adding part which is used for adding coagulant into the primary coagulation tank 3 and the secondary coagulation tank 7;
4) the treatment system also comprises a flocculant dosing part which is used for adding a flocculant to the primary flocculation tank 4 and the secondary flocculation tank 8.
The utility model discloses a preferred processing flow of nickel wastewater's processing system as follows: nickeliferous waste water that the workshop produced flows into underground collecting tank earlier certainly, flows into the equalizing basin again and promotes the inflow equalizing basin like the accessible elevator pump, carries to one-level reaction tank after the balanced quality of water yield, throws the pH value of alkali regulation waste water, flows in proper order: one-level coagulating basin, one-level flocculation basin and one-level sedimentation tank, throw in proper order and add alkali, coagulant like PAC, flocculating agent like PAM, one-level sedimentation tank effluent is from flowing into the second grade reaction tank, throws and removes the nickel agent and further removes nickel, and the second grade reaction tank effluent flows in proper order again: the method comprises the following steps of sequentially adding a coagulant such as PAC and a flocculant such as PAM into a secondary coagulation tank, a secondary flocculation tank and a secondary sedimentation tank, enabling the effluent of the secondary sedimentation tank to flow into an intermediate water tank, enabling the effluent of the intermediate water tank to flow into a sand filter tank, further removing nickel-containing sludge, enabling the effluent of the sand filter tank to flow into a membrane tank, further removing SS in wastewater, enabling the effluent of the membrane tank to flow into a production water tank, serving as a membrane tank backwashing water taking tank, enabling the effluent of the production water tank to flow into a pH adjusting tank, adjusting the pH of the wastewater to be in the optimal reaction range of resin, sequentially introducing the effluent of the pH adjusting tank into a resin tank, a pH adjusting tank and a recapture agent tank, further removing nickel in the wastewater through the resin and the recapture agent, then flowing into a discharge water tank, and matching with. Sludge and sand filter tank backwash water produced by the primary sedimentation tank and the secondary sedimentation tank are discharged into the sludge tank, and after being subjected to filter pressing by a filter press such as a plate-and-frame filter press, filter pressing liquid flows back to the regulating tank, and the sludge cake is conveyed to a sludge dryer and is treated outside after being dewatered again.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A nickel-containing wastewater treatment system is characterized by comprising an adjusting tank (1), a primary reaction tank (2), a primary coagulation tank (3), a primary flocculation tank (4), a primary sedimentation tank (5), a secondary reaction tank (6), a secondary coagulation tank (7), a secondary flocculation tank (8), a secondary sedimentation tank (9), a sand filtration tank (10), a membrane tank (11), a pH adjusting tank (12) and a resin tank (13) which are sequentially in fluid communication; or comprises a water collecting tank (14), an adjusting tank (1), a primary reaction tank (2), a primary coagulation tank (3), a primary flocculation tank (4), a primary sedimentation tank (5), a secondary reaction tank (6), a secondary coagulation tank (7), a secondary flocculation tank (8), a secondary sedimentation tank (9), a sand filtration tank (10), a membrane tank (11), a pH adjusting tank (12) and a resin tank (13) which are sequentially communicated with each other by fluid.
2. The processing system of claim 1, further comprising at least one of the following technical features:
1) an intermediate water tank (15) is also arranged between the secondary sedimentation tank (9) and the sand filtering tank (10), and the secondary sedimentation tank (9), the intermediate water tank (15) and the sand filtering tank (10) are sequentially in fluid communication;
2) still be equipped with between membrane pond (11) and pH equalizing basin (12) and produce pond (16), membrane pond (11), produce pond (16) and pH equalizing basin (12) fluid intercommunication in proper order.
3. The treatment system according to claim 2), further comprising a first backwash conduit, wherein the water production tank (16) is in fluid communication with the membrane tank (11) via the first backwash conduit.
4. A treatment system as claimed in any one of claims 1 to 3, further comprising a pH adjustment tank (17) and a recapture tank (18), said resin tank (13), pH adjustment tank (17) and recapture tank (18) being in fluid communication in sequence.
5. A treatment system according to claim 4, wherein a drain sump (19) is provided after the recapture tank (18), the recapture tank (18) and drain sump (19) being in fluid communication in series.
6. The treatment system of claim 5, further comprising a second backwash conduit through which the drain basin (19) is in fluid communication with the sand filter tank (10).
7. The treatment system according to claim 5, further comprising an on-line nickel detection device (23) for detecting whether the nickel content in the wastewater in the discharge water tank is up to standard, discharging when the nickel content is up to standard, and returning the wastewater to the regulating tank (1) or the collecting tank (14) when the nickel content is not up to standard; the discharging water tank (19), the online nickel detection device (23) and the regulating tank (1) are sequentially communicated with each other through fluid, or the discharging water tank (19), the online nickel detection device (23) and the water collecting tank (14) are sequentially communicated with each other through fluid.
8. The treatment system according to claim 1, further comprising a sludge basin (20) and a filter press (21), the primary sedimentation basin (5), the secondary sedimentation basin (9) and the sand filter tank (10) being in fluid communication with the sludge basin (20), the sludge basin (20) being in turn in fluid communication with the filter press (21); the sludge tank (20) is used for storing sludge from the primary sedimentation tank (5) and the secondary sedimentation tank (9) and backwash water of the sand filtration tank (10); the filter press (21) is used for filter pressing the sludge from the sludge pool (20).
9. The processing system of claim 8, further comprising at least one of the following technical features:
1) the filter press (21) is in fluid communication with the conditioning tank (1) for returning a pressure filtrate from the filter press (21) to the conditioning tank (1);
2) the filter press (21) is in fluid communication with the sump (14) for returning a pressure filtrate from the filter press (21) to the sump (14);
2) the treatment system further comprises a sludge dryer (22) for drying filter-pressed sludge from the filter press (21); the filter press (21) is in fluid communication with the sludge dryer (22).
10. The processing system of claim 1, further comprising at least one of the following technical features:
1) the treatment system also comprises an alkali liquor dosing component used for adding alkali liquor into the primary reaction tank (2);
2) the treatment system also comprises a nickel removing agent dosing part which is used for adding a nickel removing agent into the secondary reaction tank (6);
3) the treatment system also comprises a coagulant adding part which is used for adding coagulant into the primary coagulation tank (3) and the secondary coagulation tank (7);
4) the treatment system also comprises a flocculant dosing part which is used for adding a flocculant into the primary flocculation tank (4) and the secondary flocculation tank (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921909520.9U CN212102282U (en) | 2019-11-04 | 2019-11-04 | Nickel-containing wastewater treatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921909520.9U CN212102282U (en) | 2019-11-04 | 2019-11-04 | Nickel-containing wastewater treatment system |
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| Publication Number | Publication Date |
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| CN212102282U true CN212102282U (en) | 2020-12-08 |
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| CN201921909520.9U Active CN212102282U (en) | 2019-11-04 | 2019-11-04 | Nickel-containing wastewater treatment system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113860565A (en) * | 2021-10-29 | 2021-12-31 | 唐瑞见 | Nickel-containing wastewater treatment system and nickel-containing wastewater treatment process |
| CN117263450A (en) * | 2023-10-30 | 2023-12-22 | 高频(北京)科技股份有限公司 | Cobalt-containing wastewater treatment system and method |
-
2019
- 2019-11-04 CN CN201921909520.9U patent/CN212102282U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113860565A (en) * | 2021-10-29 | 2021-12-31 | 唐瑞见 | Nickel-containing wastewater treatment system and nickel-containing wastewater treatment process |
| CN117263450A (en) * | 2023-10-30 | 2023-12-22 | 高频(北京)科技股份有限公司 | Cobalt-containing wastewater treatment system and method |
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