Membrane device for treating electroplating nickel-containing wastewater

Abstract

The invention discloses a membrane device for treating electroplating nickel-containing wastewater, which comprises a microfiltration membrane assembly, a reverse osmosis high-pressure pump, a reverse osmosis membrane assembly, a primary concentration high-pressure pump, a primary concentration membrane assembly, a secondary concentration high-pressure pump, a secondary concentration membrane assembly, a connecting pipeline, an instrument panel and a membrane frame, the microfiltration membrane assembly, the reverse osmosis high-pressure pump, the reverse osmosis membrane assembly, the first-stage concentration high-pressure pump, the first-stage concentration membrane assembly, the second-stage concentration high-pressure pump, the second-stage concentration membrane assembly, the connecting pipeline and the instrument panel are all mounted on the membrane frame. The membrane device for treating wastewater is attractive, convenient to operate, small in occupied area and capable of being integrally migrated, a large amount of site construction work is saved, and standardized design and production can be achieved according to different water treatment amounts.

Description

Technical Field

[0001] The present invention belongs to the technical field of wastewater treatment, and particularly relates to a membrane device for treating electroplating nickel-containing wastewater. Background Art

[0002] At present, membrane concentration and separation technology has been widely used in the treatment of heavy metal wastewater. However, it is often limited in application and promotion due to the high equipment cost. If the equipment assembly is standardized and normalized through reasonable layout, not only can the equipment cost be reduced, but also the operation cost can be reduced by simplifying the operation. Summary of the Invention

[0003] The purpose of the present invention is to provide a membrane device for treating electroplating nickel-containing wastewater, which facilitates the treatment of electroplating nickel-containing wastewater, thereby reducing the cost of membrane concentration and separation technology in treating electroplating nickel-containing wastewater. The treated fresh water can be reused in the water washing tank of the electroplating production line, and the concentrated liquid can be reused in the electroplating mother tank of the production line.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: a membrane device for treating electroplating nickel-containing wastewater, which includes a microfiltration membrane module, a reverse osmosis high-pressure pump, a reverse osmosis membrane module, a first-stage concentration high-pressure pump, a first-stage concentration membrane module, a second-stage concentration high-pressure pump, a second-stage concentration membrane module, connecting pipelines, an instrument panel, and a membrane rack. The microfiltration membrane module, the reverse osmosis high-pressure pump, the reverse osmosis membrane module, the first-stage concentration high-pressure pump, the first-stage concentration membrane module, the second-stage concentration high-pressure pump, the second-stage concentration membrane module, the connecting pipelines, and the instrument panel are all installed on the membrane rack.

[0005] Further, the connecting pipelines include low-pressure pipelines and medium-pressure pipelines, and are connected to equipment or valves through flanges, copy rings or unions.

[0006] Furthermore, the pressure range of the low-pressure pipelines is 0 - 1.6 Mpa, and the chemical UPVC material is used.

[0007] Furthermore, the pressure range of the medium-pressure pipelines is 1.6 - 10 Mpa, and the carbon steel lined plastic material is used.

[0008] Further, the instrument panel is made of 2 mm thick stainless steel plate. On the instrument panel, there are installations for a microfiltration fresh water flowmeter, a reverse osmosis fresh water flowmeter, a reverse osmosis concentrated water flowmeter, a first-stage concentration fresh water flowmeter, a first-stage concentration concentrated water flowmeter, a second-stage concentration fresh water flowmeter, a second-stage concentration concentrated water flowmeter, a microfiltration inlet pressure gauge, a microfiltration concentrated water pressure gauge, a reverse osmosis inlet pressure gauge, a reverse osmosis concentrated water pressure gauge, a first-stage concentration inlet pressure gauge, a first-stage concentration concentrated water pressure gauge, a second-stage concentration inlet pressure gauge, a second-stage concentration concentrated water pressure gauge, a reverse osmosis fresh water conductivity meter, a first-stage concentration fresh water conductivity meter, and a second-stage concentration fresh water conductivity meter.

[0009] Further, the microfiltration fresh water flowmeter, reverse osmosis fresh water flowmeter, reverse osmosis concentrated water flowmeter, primary concentrated concentrated water flowmeter, primary concentrated concentrated water flowmeter, secondary concentrated fresh water flowmeter, and secondary concentrated concentrated water flowmeter all adopt panel-type flowmeters, and the material is selected as transparent organic glass.

[0010] Further, the microfiltration inlet pressure gauge, microfiltration concentrated water pressure gauge, reverse osmosis inlet pressure gauge, reverse osmosis concentrated water pressure gauge, primary concentrated inlet pressure gauge, primary concentrated concentrated water pressure gauge, secondary concentrated inlet pressure gauge, and secondary concentrated concentrated water pressure gauge all adopt panel-type axial pressure gauges.

[0011] Further, the reverse osmosis fresh water conductivity meter, primary concentrated fresh water conductivity meter, and secondary concentrated fresh water conductivity meter all adopt graphite electrodes.

[0012] Further, the membrane rack is made of stainless steel square tubes.

[0013] The beneficial effects of the present invention are as follows: (1) The high-pressure pump, membrane module, connecting pipelines and instruments are reasonably arranged and installed on the membrane rack, which is beautiful, convenient to operate, occupies a small area, can be relocated as a whole, saves a large amount of on-site construction work, and can be standardized designed and produced according to different treatment water volumes.

[0014] (2) The connections between the connecting pipelines and the equipment and valves all adopt flanges, copy rings or unions, which are convenient for disassembly and maintenance.

[0015] (3) The low-pressure pipelines adopt chemical UPVC materials, and the medium-pressure pipelines adopt carbon steel lined with plastic materials. The materials of the connecting pipelines are reasonably selected according to different pressures and media, which are economical and applicable, and have strong corrosion resistance.

[0016] (4) The flowmeters and pressure gauges all adopt panel type, and the installation is simple and beautiful.

[0017] (5) The material of the flowmeter is selected as transparent organic glass, which has high transparency, intuitive reading, is not easy to break, has light weight and long service life.

[0018] (6) The conductivity meters all adopt graphite electrodes, which have strong corrosion resistance.

[0019] (7) The instrument panel adopts a 2-mm-thick stainless steel plate, and the membrane rack is made of stainless steel square tubes, which are not only beautiful in appearance but also have strong corrosion resistance. Description of the Drawings

[0020] Figure 1-2 They are respectively the front view axonometric drawing and the rear view axonometric drawing of a membrane device for treating electroplating nickel-containing wastewater according to the present invention.

[0021] Figure 3-5They are respectively the front view, left view, and rear view of the equipment layout in a membrane device for treating nickel-containing electroplating wastewater according to the present invention.

[0022] Reference numerals in the figure: 1 is a microfiltration membrane module, 2 is a reverse osmosis high-pressure pump, 3 is a reverse osmosis membrane module, 4 is a first-stage concentration high-pressure pump, 5 is a first-stage concentration membrane module, 6 is a second-stage concentration high-pressure pump, 7 is a second-stage concentration membrane module, 8 is a connecting pipeline, 9 is an instrument panel, and 10 is a membrane rack. 91 is a microfiltration fresh water flowmeter, 92 is a reverse osmosis fresh water flowmeter, 93 is a reverse osmosis concentrated water flowmeter, 94 is a first-stage concentration fresh water flowmeter, 95 is a first-stage concentration concentrated water flowmeter, 96 is a second-stage concentration fresh water flowmeter, 97 is a second-stage concentration concentrated water flowmeter, 98 is a microfiltration inlet pressure gauge, 99 is a microfiltration concentrated water pressure gauge, 910 is a reverse osmosis inlet pressure gauge, 911 is a reverse osmosis concentrated water pressure gauge, 912 is a first-stage concentration inlet pressure gauge, 913 is a first-stage concentration concentrated water pressure gauge, 914 is a second-stage concentration inlet pressure gauge, 915 is a second-stage concentration concentrated water pressure gauge, 916 is a reverse osmosis fresh water conductivity meter, 917 is a first-stage concentration fresh water conductivity meter, and 918 is a second-stage concentration fresh water conductivity meter. Embodiment

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0024] As Figure 1-5 shown, a membrane device for treating nickel-containing electroplating wastewater includes a microfiltration membrane module 1, a reverse osmosis high-pressure pump 2, a reverse osmosis membrane module 3, a first-stage concentration high-pressure pump 4, a first-stage concentration membrane module 5, a second-stage concentration high-pressure pump 6, a second-stage concentration membrane module 7, a connecting pipeline 8, an instrument panel 9, and a membrane rack 10. The microfiltration membrane module 1, the reverse osmosis high-pressure pump 2, the reverse osmosis membrane module 3, the first-stage concentration high-pressure pump 4, the first-stage concentration membrane module 5, the second-stage concentration high-pressure pump 6, the second-stage concentration membrane module 7, the connecting pipeline 8, and the instrument panel 9 are all installed on the membrane rack 10, which is beautiful, convenient to operate, occupies a small area, can be relocated as a whole, saves a large amount of on-site construction work, and can be designed and produced standardly according to different treatment water volumes.

[0025] The dashboard 9 is made of a 2-mm thick stainless steel plate. On the dashboard 9, there are positions for installing a microfiltration fresh water flowmeter 91, a reverse osmosis fresh water flowmeter 92, a reverse osmosis concentrated water flowmeter 93, a primary concentration fresh water flowmeter 94, a primary concentration concentrated water flowmeter 95, a secondary concentration fresh water flowmeter 96, a secondary concentration concentrated water flowmeter 97, a microfiltration inlet pressure gauge 98, a microfiltration concentrated water pressure gauge 99, a reverse osmosis inlet pressure gauge 910, a reverse osmosis concentrated water pressure gauge 911, a primary concentration inlet pressure gauge 912, a primary concentration concentrated water pressure gauge 913, a secondary concentration inlet pressure gauge 914, a secondary concentration concentrated water pressure gauge 915, a reverse osmosis fresh water conductivity meter 916, a primary concentration fresh water conductivity meter 917, and a secondary concentration fresh water conductivity meter 918.

[0026] The connecting pipeline 8 includes a low-pressure pipeline and a medium-pressure pipeline, and is connected to equipment or valves through flanges, unions or couplings, which is convenient for disassembly, installation and maintenance.

[0027] The pressure range of the low-pressure pipeline is 0 to 1.6 Mpa, and it is made of chemical UPVC material with strong corrosion resistance.

[0028] The pressure range of the medium-pressure pipeline is 1.6 to 10 Mpa, and it is made of carbon steel lined with plastic, with strong pressure resistance and corrosion resistance.

[0029] The microfiltration fresh water flowmeter 91, the reverse osmosis fresh water flowmeter 92, the reverse osmosis concentrated water flowmeter 93, the primary concentration fresh water flowmeter 94, the primary concentration concentrated water flowmeter 95, the secondary concentration fresh water flowmeter 96, and the secondary concentration concentrated water flowmeter 97 all adopt panel-type flowmeters. The material is selected as transparent organic glass, which is beautiful, has high transparency, intuitive reading, is not easy to break, has light weight and long service life.

[0030] The microfiltration inlet pressure gauge 98, the microfiltration concentrated water pressure gauge 99, the reverse osmosis inlet pressure gauge 910, the reverse osmosis concentrated water pressure gauge 911, the primary concentration inlet pressure gauge 912, the primary concentration concentrated water pressure gauge 913, the secondary concentration inlet pressure gauge 914, and the secondary concentration concentrated water pressure gauge 915 all adopt panel-type axial pressure gauges, which are beautiful and easy to install.

[0031] The reverse osmosis fresh water conductivity meter 916, the primary concentration fresh water conductivity meter 917, and the secondary concentration fresh water conductivity meter 918 all adopt graphite electrodes with strong corrosion resistance.

[0032] The membrane rack 10 is made of stainless steel square tubes, with beautiful appearance and strong corrosion resistance.

[0033] The specific implementation process of the present invention is as follows: During use, a microfiltration concentration water tank, a microfiltration circulation pump, a microfiltration product water tank, a microfiltration product water tank booster pump, a carbon filter, a security filter, a fresh water tank, a concentrated water tank, and an ultra-concentrated water tank need to be equipped outside the membrane device. Raw water enters the microfiltration concentration water tank through the raw water pump or overflow, and then is sent into the microfiltration membrane module 1 by the microfiltration circulation pump for circulating filtration to remove suspended solids. The filtered water enters the microfiltration product water tank, and then is sent into the carbon filter by the microfiltration product water tank booster pump to remove organic matter, and fine particles are removed through the security filter to ensure the safe operation of the subsequent membrane module. Then, it is sent into the reverse osmosis membrane module 3 by the reverse osmosis high-pressure pump 2 for separation. The separated fresh water enters the fresh water tank and can be reused in the electroplating production line washing tank. After the separated concentrated water enters the concentrated water tank, it is sent into the first-stage concentration membrane module 5 by the first-stage concentration high-pressure pump 4 for concentration. The concentrated fresh water returns to the front-end microfiltration product water tank, and the concentrated concentrated water enters the ultra-concentrated water tank and then is sent into the second-stage concentration membrane module 7 by the second-stage concentration high-pressure pump 6 for circulating concentration. The concentrated fresh water returns to the front-end concentrated water tank, and when the concentrated concentrated water meets the concentration requirement, it can be reused in the electroplating mother tank of the production line as concentrated liquid.

[0034] In summary, for the membrane device for treating electroplating nickel-containing wastewater of the present invention, its high-pressure pump, membrane module, connecting pipelines and instruments are reasonably arranged and installed on the membrane rack. The materials of the membrane rack and the instrument panel are both made of stainless steel, which is beautiful, convenient to operate, occupies a small area, can be migrated as a whole, saves a large amount of on-site construction work, and can be standardized designed and produced according to different treatment water volumes. The materials of the connecting pipelines are reasonably selected according to different pressures and media, which are economical and applicable and have strong corrosion resistance. The connections between the connecting pipelines and equipment and valves are all made of flanges, cup couplings or unions, which are convenient for disassembly and maintenance.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those of ordinary skill in the art should understand that the above embodiments do not limit the protection scope of the present invention in any form. Any technical solutions obtained by means of equivalent replacement and the like all fall within the protection scope of the present invention.

[0036] The parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art.

Claims

1. A membrane device for treating electroplating nickel-containing wastewater, characterized in that, It includes a microfiltration membrane module (1), a reverse osmosis high-pressure pump (2), a reverse osmosis membrane module (3), a primary concentration high-pressure pump (4), a primary concentration membrane module (5), a secondary concentration high-pressure pump (6), a secondary concentration membrane module (7), connecting pipelines (8), an instrument panel (9) and a membrane rack (10). The microfiltration membrane module (1), the reverse osmosis high-pressure pump (2), the reverse osmosis membrane module (3), the primary concentration high-pressure pump (4), the primary concentration membrane module (5), the secondary concentration high-pressure pump (6), the secondary concentration membrane module (7), the connecting pipelines (8) and the instrument panel (9) are all installed on the membrane rack (10).

2. The membrane device for treating nickel-containing electroplating wastewater according to claim 1, characterized in that, The connecting pipelines (8) include low-pressure pipelines and medium-pressure pipelines, and are connected to equipment or valves through flanges, unions or couplings.

3. The membrane device for treating nickel-containing electroplating wastewater according to claim 2, wherein The pressure range of the low-pressure pipelines is 0 to 1.6 Mpa, and they are made of chemical-grade UPVC material.

4. A membrane device for treating electroplating nickel-containing wastewater according to claim 2, characterized in that, The pressure range of the medium-pressure pipelines is 1.6 to 10 Mpa, and they are made of carbon steel lined with plastic.

5. A membrane device for treating nickel-containing electroplating wastewater according to claim 1, characterized in that, The instrument panel (9) is made of 2-mm-thick stainless steel plate. On the instrument panel (9), there are installed a microfiltration fresh water flowmeter (91), a reverse osmosis fresh water flowmeter (92), a reverse osmosis concentrated water flowmeter (93), a primary concentration fresh water flowmeter (94), a primary concentration concentrated water flowmeter (95), a secondary concentration fresh water flowmeter (96), a secondary concentration concentrated water flowmeter (97), a microfiltration inlet pressure gauge (98), a microfiltration concentrated water pressure gauge (99), a reverse osmosis inlet pressure gauge (910), a reverse osmosis concentrated water pressure gauge (911), a primary concentration inlet pressure gauge (912), a primary concentration concentrated water pressure gauge (913), a secondary concentration inlet pressure gauge (914), a secondary concentration concentrated water pressure gauge (915), a reverse osmosis fresh water conductivity meter (916), a primary concentration fresh water conductivity meter (917) and a secondary concentration fresh water conductivity meter (918).

6. The membrane device for treating nickel-containing electroplating wastewater according to claim 5, characterized in that, The microfiltration fresh water flowmeter (91), the reverse osmosis fresh water flowmeter (92), the reverse osmosis concentrated water flowmeter (93), the primary concentration fresh water flowmeter (94), the primary concentration concentrated water flowmeter (95), the secondary concentration fresh water flowmeter (96) and the secondary concentration concentrated water flowmeter (97) are all panel-mounted flowmeters, and the material is selected as transparent organic glass.

7. A membrane device for treating nickel-containing electroplating wastewater according to claim 5, characterized in that, The microfiltration inlet pressure gauge (98), the microfiltration concentrated water pressure gauge (99), the reverse osmosis inlet pressure gauge (910), the reverse osmosis concentrated water pressure gauge (911), the primary concentration inlet pressure gauge (912), the primary concentration concentrated water pressure gauge (913), the secondary concentration inlet pressure gauge (914) and the secondary concentration concentrated water pressure gauge (915) are all panel-mounted axial pressure gauges.

8. A membrane device for treating electroplating nickel-containing wastewater according to claim 5, characterized in that, The reverse osmosis fresh water conductivity meter (916), the primary concentration fresh water conductivity meter (917) and the secondary concentration fresh water conductivity meter (918) all adopt graphite electrodes.

9. A membrane device for treating nickel-containing electroplating wastewater according to claim 1, characterized in that, The membrane rack (10) is made of stainless steel square tubes, and the bottom of the membrane rack is raised by 75 mm.

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