CN114409154A - Reduce processing apparatus that membrane of soluble algae organic matter pollutes - Google Patents
Reduce processing apparatus that membrane of soluble algae organic matter pollutes Download PDFInfo
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- CN114409154A CN114409154A CN202210181546.6A CN202210181546A CN114409154A CN 114409154 A CN114409154 A CN 114409154A CN 202210181546 A CN202210181546 A CN 202210181546A CN 114409154 A CN114409154 A CN 114409154A
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- 239000012528 membrane Substances 0.000 title claims abstract description 83
- 241000195493 Cryptophyta Species 0.000 title claims abstract description 38
- 238000012545 processing Methods 0.000 title claims abstract description 5
- 239000005416 organic matter Substances 0.000 title claims description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 82
- 239000000919 ceramic Substances 0.000 claims abstract description 64
- 238000001471 micro-filtration Methods 0.000 claims abstract description 60
- 238000011282 treatment Methods 0.000 claims abstract description 23
- 238000011001 backwashing Methods 0.000 claims abstract description 16
- 239000002351 wastewater Substances 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 239000000498 cooling water Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 12
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- 230000015271 coagulation Effects 0.000 claims description 11
- 238000009285 membrane fouling Methods 0.000 claims description 9
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- 231100000765 toxin Toxicity 0.000 claims description 7
- 108700012359 toxins Proteins 0.000 claims description 7
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
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- 229910052593 corundum Inorganic materials 0.000 claims description 4
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- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 4
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- 238000009303 advanced oxidation process reaction Methods 0.000 description 4
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Classifications
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a processing device for reducing membrane pollution of soluble algae organic matters, which comprises an ultraviolet/hydrogen peroxide pretreatment pool with an ultraviolet lamp in the center, a single-channel tubular ceramic microfiltration membrane, a screw pump, a heat exchanger and a back washing device. In addition, the composite action of the composite membrane and the ceramic microfiltration membrane can improve the performance of the ceramic microfiltration membrane, does not produce any sludge by-product, and saves the sludge treatment cost.
Description
Technical Field
The invention relates to the technical field of soluble algae organic wastewater treatment, in particular to a treatment device for reducing membrane pollution of soluble algae organic matters.
Background
The problem of membrane fouling caused by naturally occurring organic compounds in wastewater remains a major limiting factor in most industrial membrane water treatment processes, because membrane fouling causes problems such as reduced membrane flux, reduced water treatment quality, increased energy consumption and maintenance costs. The increasingly serious problem of water eutrophication can cause mass propagation of harmful algae and blue algae, and a large amount of soluble algae organic matters enter the water treatment process, thereby causing problems of water quality and treatment efficiency. As high molecular weight biopolymers, soluble algal organics can cause severe contamination of oligomer and ceramic membranes. In addition, bloom can cause the release of harmful algal metabolites (including toxins) into drinking water, threatening human health.
Pretreatment is a common practice to reduce organic fouling of membranes, as it can remove organic components with high fouling or convert them to organic, UV/H, with low concentrations of fouling prior to membrane filtration2O2Advanced oxidation processes are widely used to degrade organic compounds. UV/H2O2Advanced oxidation processes generate abundant hydroxyl radicals (. OH) with strong oxidizing properties, can decompose large organic compounds into small molecules and mineralize them, and have the potential to reduce the membrane fouling concentration, thus improving membrane performance. Mixing UV/H2O2Advanced oxidation process treatments work better in combination with ceramic membranes because of the UV/H2O2The advanced oxidation process can also optimize water quality, disinfect and clean water.
Disclosure of Invention
The present invention is directed to a treatment apparatus for reducing membrane fouling of soluble algae organic substances, which solves the above problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a treatment device for reducing membrane pollution of soluble algae organic matters comprises a heat exchanger, a cooling water storage, a feeding tank, a screw pump, a pressure gauge, a ceramic micro-filtration membrane, a throttle valve, a backwashing device and an ultraviolet/hydrogen peroxide pretreatment pool, wherein the feeding tank is provided with two pairs of external inlets and outlets, the internal inlet at the top of the feeding tank is communicated with the outlet of the throttle valve, the inlet of the throttle valve is communicated with the outlet of the ultraviolet/hydrogen peroxide pretreatment pool, the internal outlet at the bottom of the feeding tank is communicated with the water inlet of the screw pump, the external inlet of the feeding tank is communicated with the outlet of the cooling water storage, the external outlet of the feeding tank is communicated with the inlet of the heat exchanger, the inlet of the cooling water storage is communicated with the outlet of the heat exchanger, the outlet of the ultraviolet/hydrogen peroxide pretreatment pool is communicated with the inlet of the throttle valve, and the inlet of the ceramic micro-filtration membrane is connected with the screw pump, the middle of the screw pump and the ceramic micro-filtration membrane is provided with a first pressure gauge, and the outlet of the ceramic micro-filtration membrane is communicated with the inlet of the back washing device.
Preferably, the inlet of the throttle valve is communicated with the ceramic micro-filtration membrane, and a safety valve and a second pressure gauge are arranged between the throttle valve and the ceramic micro-filtration membrane.
Preferably, the outlet end of the back washing device is communicated with the inlet end of the filter valve.
Preferably, the ceramic microfiltration membrane is single-channel tubular Al2O3And the aperture of the ceramic microfiltration membrane is 0.1 mu m.
Preferably, the ultraviolet/hydrogen peroxide pretreatment tank contains a hydrogen peroxide solution and is centrally provided with an annular ultraviolet lamp.
Preferably, the method comprises the following steps:
s1: conveying the simulated wastewater containing the algal toxins into an ultraviolet/hydrogen peroxide pretreatment pool, and simultaneously performing coagulation, photolysis and oxidation;
s2: performing multiple circulating reactions on the simulated algae toxin wastewater through a heat exchanger, a cooling water storage, a filter valve and a backwashing device;
s3: pumping the pretreated algal toxin wastewater in the feeding tank to a ceramic microfiltration membrane through a screw pump for filtering and discharging;
s4: and (3) cleaning the filtered ceramic microfiltration membrane in situ by using a backwashing device, applying pressure to the permeation side of the ceramic microfiltration membrane, returning the penetrating fluid to the feeding tank through the ceramic microfiltration membrane, and respectively obtaining the outlet pressure and the inlet pressure of the ceramic microfiltration membrane by using a pressure gauge II and a pressure gauge I.
Preferably, in the step S1, the average irradiation area of the central ultraviolet lamp of the ultraviolet/hydrogen peroxide pretreatment tank is 464cm2Path length of 1.94cm, ultraviolet wavelength of 254nm, average light irradiation rateIs 8.91mW cm-2。
Compared with the prior art, the invention has the beneficial effects that:
by utilizing the ultraviolet/hydrogen peroxide pretreatment technology, the coagulation effect is improved, and hydroxyl free radicals are generated in the soluble algae organic wastewater to oxidize and degrade soluble algae organic matters in the wastewater, so that the concentration of the soluble algae organic matters in the wastewater is reduced, and the ultraviolet/hydrogen peroxide pretreatment technology is very effective for decomposing microcystin, so that the ultraviolet/hydrogen peroxide oxidation technology is suitable for treating water quality during the blue algae bloom. In addition, the composite action of the composite membrane and the ceramic microfiltration membrane can improve the performance of the ceramic microfiltration membrane, does not produce any sludge by-product, and saves the sludge treatment cost.
Drawings
FIG. 1 is a schematic structural diagram of a comprehensive treatment device for soluble algae organic wastewater according to the present invention.
FIG. 2 is a dot plot of the circulating flux of the ceramic microfiltration membrane tested in the experiment of the present invention.
FIG. 3 is a dot line graph of the test membrane fouling index in the inventive experiment.
FIG. 4 is a bar graph of DOC removal rate tested in the inventive experiment.
FIG. 5 is a bar graph of the rejection of the ceramic microfiltration membranes tested in the experiments of the invention.
FIG. 6 is a graph of OCD response for testing soluble algal organics in the experiments of the present invention.
FIG. 7 is a graph of the UVD response of the soluble algal organics tested in the experiments of the present invention.
In the figure: 1. the device comprises a heat exchanger, 2, a cooling water storage tank, 3, a feeding tank, 4, a screw pump, 5, a first pressure gauge, 6, a ceramic micro-filtration membrane, 7, a retention valve, 8, a safety valve, 9, a second pressure gauge, 10, a backwashing device, 11, a filter valve, 12 and an ultraviolet/hydrogen peroxide pretreatment tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 7, the present invention provides a technical solution: a treatment device for reducing membrane pollution of soluble algae organic matters is provided, a feeding tank 3 is provided with two pairs of external inlets and outlets, an internal inlet at the top of the feeding tank 3 is communicated with an outlet of a throttle valve 7, an inlet of the throttle valve 7 is communicated with an outlet of an ultraviolet/hydrogen peroxide pretreatment tank 12, the ultraviolet/hydrogen peroxide pretreatment tank 12 contains hydrogen peroxide solution, the center of the ultraviolet/hydrogen peroxide pretreatment tank is provided with an annular ultraviolet lamp, an internal outlet at the bottom of the feeding tank 3 is communicated with a water inlet of a screw pump 4, an external inlet of the feeding tank 3 is communicated with an outlet of a cooling water storage 2, an external outlet of the feeding tank 3 is communicated with an inlet of a heat exchanger 1, an inlet of the cooling water storage 2 is communicated with an outlet of the heat exchanger 1,the outlet of the ultraviolet/hydrogen peroxide pretreatment tank 12 is communicated with the inlet of a throttle valve 7, the inlet of the throttle valve 7 is communicated with a ceramic microfiltration membrane 6, a safety valve 8 and a second pressure gauge 9 are arranged between the throttle valve 7 and the ceramic microfiltration membrane 6, the inlet of the ceramic microfiltration membrane 6 is connected with a screw pump 4, the first pressure gauge 5 is arranged between the screw pump 4 and the ceramic microfiltration membrane 6, and the ceramic microfiltration membrane 6 is a single-channel tubular Al2O3The aperture of the ceramic membrane is 0.1 μm, and the outlet of the ceramic microfiltration membrane 6 is communicated with the inlet of the backwashing device 10, the outlet of the backwashing device 10 is communicated with the inlet of the filter valve 11.
The processing steps are as follows:
s1: the soluble algae organic wastewater is conveyed into the ultraviolet/hydrogen peroxide pretreatment pool 12 through a water inlet pump, a water outlet of the water inlet pump is communicated with the ultraviolet/hydrogen peroxide pretreatment pool 12, a water inlet of the water inlet pump is communicated with a water inlet tank 3 filled with the soluble algae organic wastewater, an ultraviolet lamp is arranged in the center of the treatment pool, and the average irradiation area of the ultraviolet lamp is 464cm2Path length of 1.94cm, ultraviolet wavelength of 254nm, and average light irradiation rate of 8.91mW cm-2Simultaneously adding hydrogen peroxide solution for oxidation.
The ultraviolet lamp is used for inactivating soluble algae organic matters, and the hydrogen peroxide is used for degrading the soluble algae organic matters to generate highly oxidized hydroxyl free radicals (. OH), so that large organic compounds are decomposed into smaller molecules and mineralized, and the potential of reducing the membrane fouling concentration and improving the membrane performance is realized.
S2: the pretreated soluble algae organic wastewater is conveyed into a feeding tank 3 through a water inlet pump for storage, meanwhile, an inlet inside the top of the feeding tank 3 is communicated with an outlet of a throttle valve 7, an inlet of the throttle valve 7 is communicated with an outlet of an ultraviolet/hydrogen peroxide pretreatment tank 12, and an outlet inside the bottom is communicated with a water inlet of a screw pump 4; the external inlet of the feeding tank 3 is communicated with the cooling water outlet, the external outlet of the feeding tank 3 is communicated with the inlet of the heat exchanger 1, and the inlet of the cooling water device 2 is communicated with the outlet of the heat exchanger 1.
Wherein the cooling water outside the feed tank 3 can be recycled.
S3: the soluble algae organic wastewater in the feeding tank 3 is filtered by a ceramic micro-filtration membrane 6, the ceramic micro-filtration membrane 6 is fixedly arranged between a first pressure gauge 5 and a second pressure gauge 9, the water inlet of the ceramic micro-filtration membrane 6 is communicated with the water outlet of a screw pump 4, the water outlet of the ceramic micro-filtration membrane 6 is communicated with the water inlet of a backwashing device 10, and the water outlet of the backwashing device 10 is communicated with the water inlet of a filter valve 11. Soluble algae organic wastewater in the feeding tank 3 is conveyed to the ceramic microfiltration membrane 6 through the screw pump 4 to be filtered, the filtered solution enters the liquid collecting small bottle through the filter valve 11, and suspended solids and macromolecular organic matters in the chemical wastewater can be retained through the ceramic microfiltration membrane 6, so that the concentration of the organic matters in the soluble algae organic wastewater is reduced.
Wherein the ceramic microfiltration membrane is Al2O3And a ceramic membrane having a membrane pore size of 0.1 μm.
S4: and (3) performing in-situ back flushing on the ceramic microfiltration membrane 6 after multiple treatments, applying pressure to the permeation side of the ceramic microfiltration membrane, returning the permeation liquid to the feeding tank 3 through the ceramic microfiltration membrane 6, and respectively obtaining the outlet pressure and the inlet pressure of the ceramic microfiltration membrane 6 by a pressure gauge 9 and a pressure gauge 5.
The combination of the ultraviolet/hydrogen peroxide oxidation process and the ceramic microfiltration membrane process can improve the coagulation effect and generate hydroxyl free radicals in the soluble algae organic wastewater to oxidize and degrade soluble algae organic matters in the wastewater, so that the concentration of the soluble algae organic matters in the wastewater is reduced, and the method is very effective for decomposing microcystin, so that the ultraviolet/hydrogen peroxide oxidation technology is suitable for treating water quality during the blue algae bloom. In addition, the performance of the ceramic microfiltration membrane can be improved under the combined action of the ceramic microfiltration membrane, and meanwhile, no sludge by-product is generated, so that the sludge treatment cost is saved, and the specific experiment is combined for explanation:
selecting three groups of comprehensive treatment devices of the soluble algae organic wastewater, namely a device I (the soluble algae organic wastewater), a device II (coagulation + ceramic microfiltration membrane 6) and a device III (ultraviolet/hydrogen peroxide 12+ ceramic microfiltration membrane 6), wherein coagulation or ultraviolet/hydrogen peroxide 12 pretreatment is removed in the device I, so that the treatment effect of the ceramic microfiltration membrane 6 process on the soluble algae organic wastewater is tested independently, ultraviolet/hydrogen peroxide 12 pretreatment is removed in the device II, the treatment effect of the coagulation process and the ceramic microfiltration membrane 6 treatment process on the soluble algae organic wastewater is combined, coagulation pretreatment is removed in the device III, and the treatment effect of the ultraviolet/hydrogen peroxide 12 process and the ceramic microfiltration membrane 6 treatment process on the soluble algae organic wastewater is combined.
And filtering 450mL of soluble algae organic wastewater in each cycle by adopting multi-cycle filtration.
Setting the hydrogen peroxide concentration in the third set of device at 0.25mM and 0.5mM, and ultraviolet intensity of ultraviolet lamp at 16J.cm-2And 32J.cm-2To compare the treatment effect of the hydrogen peroxide oxidizing agent and the ultraviolet intensity at various concentrations on the soluble algae organic wastewater.
The membrane fouling degree of the ceramic microfiltration membrane was evaluated by using a Unified Membrane Fouling Index (UMFI), and the specific volume was plotted as abscissa and the normalized flux was plotted as ordinate, as a dotted graph in fig. 2 and a dotted graph in fig. 3. As can be seen from fig. 2 and 3, the flux of the five-cycle membrane of the first device rapidly decreases, and the flux of the five-cycle membrane of the third device is basically unchanged under the pretreatment of UV 32 and 0.5mM hydrogen peroxide, and the degree of membrane contamination is lowest and lower than that of the coagulation pretreatment.
The total carbon analyzer was used to determine the soluble organic carbon (DOC) with the three pretreatment methods described above as abscissa and DOC removal as ordinate, plotted as a bar graph in fig. 4. As can be seen from FIG. 4, DOC removal rate was second only to coagulation pretreatment with UV 32 and 0.5mM hydrogen peroxide pretreatment.
The total carbon analyzer is used for measuring the soluble organic carbon (DOC), the three pretreatment methods are used as abscissa, the DOC retention rate is used as ordinate, and the histogram as shown in figure 5 is drawn. As can be seen from FIG. 5, the DOC rejection rate was lower for the UV 32 and 0.5mM hydrogen peroxide pretreatments than for the coagulation pretreatment.
OCD response plots of soluble algal organics were determined using a liquid phase organic carbon organic nitrogen test system (LC-OCD-UVD) with retention time as abscissa and OCD response as ordinate, plotted as a linear plot as shown in fig. 6. As can be seen from fig. 6, the untreated soluble algal organic matter solution contains a large amount of high molecular weight and low molecular weight substances, the high molecular weight substances are hardly seen in the soluble algal organic matter pretreated by ultraviolet/hydrogen peroxide, and the low molecular weight substances are increased, which indicates that the soluble algal organic matter can be degraded by ultraviolet/hydrogen peroxide pretreatment.
The UVD response of the soluble algal organics was plotted using a liquid phase organic carbon organic nitrogen test system (LC-OCD-UVD) with retention time as abscissa and UVD response as ordinate as a linear plot as shown in fig. 7. As can be seen in fig. 7, uv/hydrogen peroxide pre-treatment can significantly reduce the response of UVD.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. A processing apparatus for reducing membrane pollution of soluble algae organic matter, characterized in that: comprises a heat exchanger (1), a cooling water storage (2), a feeding tank (3), a screw pump (4), a first pressure gauge (5), a ceramic micro-filtration membrane (6), a throttle valve (7), a back washing device (10) and an ultraviolet/hydrogen peroxide pretreatment pool (12), wherein the feeding tank (3) is provided with two pairs of external inlets and outlets, the internal inlet at the top of the feeding tank (3) is communicated with the outlet of the throttle valve (7), the inlet of the throttle valve (7) is communicated with the outlet of the ultraviolet/hydrogen peroxide pretreatment pool (12), the internal outlet at the bottom of the feeding tank (3) is communicated with the water inlet of the screw pump (4), the external inlet of the feeding tank (3) is communicated with the outlet of the cooling water storage (2), the external outlet of the feeding tank (3) is communicated with the inlet of the heat exchanger (1), and the inlet of the cooling water storage (2) is communicated with the outlet of the heat exchanger (1), the outlet of the ultraviolet/hydrogen peroxide pretreatment tank (12) is communicated with the inlet of the throttle valve (7), the inlet of the ceramic microfiltration membrane (6) is connected with the screw pump (4), a first pressure gauge (5) is arranged between the screw pump (4) and the ceramic microfiltration membrane (6), and the outlet of the ceramic microfiltration membrane (6) is communicated with the inlet of the backwashing device (10).
2. The apparatus of claim 1, wherein the apparatus comprises: the inlet of the throttle valve (7) is communicated with the ceramic micro-filtration membrane (6), and a safety valve (8) and a second pressure gauge (9) are arranged between the throttle valve (7) and the ceramic micro-filtration membrane (6).
3. The apparatus of claim 1, wherein the apparatus comprises: the outlet end of the back washing device (10) is communicated with the inlet end of the filter valve (11).
4. The apparatus of claim 1, wherein the apparatus comprises: the ceramic micro-filtration membrane (6) is a single-channel tubular Al2O3And the membrane aperture of the ceramic microfiltration membrane (6) is 0.1 mu m.
5. The apparatus of claim 1, wherein the apparatus comprises: the ultraviolet/hydrogen peroxide pretreatment tank (12) contains hydrogen peroxide solution and is provided with an annular ultraviolet lamp at the center.
6. The method of using a treatment device for reducing membrane fouling of soluble algal organics according to claim 1 comprising the steps of:
s1: conveying the simulated wastewater containing the algal toxins into an ultraviolet/hydrogen peroxide pretreatment pool (12), and simultaneously performing coagulation, photolysis and oxidation;
s2: the simulated algae toxin wastewater is subjected to multiple circulating reactions through a heat exchanger (1), a cooling water storage (2), a filter valve (11) and a backwashing device (10);
s3: extracting the pretreated algal toxin wastewater in the feeding tank (3) into a ceramic microfiltration membrane (6) through a screw pump (4) for filtering and discharging;
s4: and (3) cleaning the filtered ceramic microfiltration membrane (6) in situ by using a back washing device (10), applying pressure to the permeation side of the ceramic microfiltration membrane (6), returning the permeation liquid to the feeding tank (3) through the ceramic microfiltration membrane (6), and respectively obtaining the outlet pressure and the inlet pressure of the ceramic microfiltration membrane (6) by using a second pressure gauge (9) and a first pressure gauge (5).
7. The apparatus of claim 1, wherein the apparatus comprises: in the step S1, the average irradiation area of the central ultraviolet lamp of the ultraviolet/hydrogen peroxide pretreatment tank (12) is 464cm2Path length of 1.94cm, ultraviolet wavelength of 254nm, and average light irradiation rate of 8.91mW cm-2。
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201454420U (en) * | 2009-06-11 | 2010-05-12 | 河北科技大学 | Micro-filtration membrane sterilization device |
| CN104016511A (en) * | 2014-05-27 | 2014-09-03 | 轻工业环境保护研究所 | Ozone / photocatalysis oxidation-membrane separation integrated method and integrated set for advanced wastewater treatment |
| CN204469550U (en) * | 2014-12-23 | 2015-07-15 | 天津市超膜科技有限公司 | A kind of ceramic membrane filter device |
| US20170334751A1 (en) * | 2016-05-18 | 2017-11-23 | New Jersey Institute Of Technology | Reactive electrochemical membrane filtration |
| CN109896583A (en) * | 2019-03-06 | 2019-06-18 | 深圳市深水龙岗水务集团有限公司 | A kind of high-strength ultraviolet light-hydrogen peroxide removes the device of algae toxin in water body |
| CN112619431A (en) * | 2020-10-14 | 2021-04-09 | 宁夏大学 | Equipment for monitoring membrane surface pollution behavior in high-salinity wastewater treatment in real time |
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2022
- 2022-02-25 CN CN202210181546.6A patent/CN114409154A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201454420U (en) * | 2009-06-11 | 2010-05-12 | 河北科技大学 | Micro-filtration membrane sterilization device |
| CN104016511A (en) * | 2014-05-27 | 2014-09-03 | 轻工业环境保护研究所 | Ozone / photocatalysis oxidation-membrane separation integrated method and integrated set for advanced wastewater treatment |
| CN204469550U (en) * | 2014-12-23 | 2015-07-15 | 天津市超膜科技有限公司 | A kind of ceramic membrane filter device |
| US20170334751A1 (en) * | 2016-05-18 | 2017-11-23 | New Jersey Institute Of Technology | Reactive electrochemical membrane filtration |
| CN109896583A (en) * | 2019-03-06 | 2019-06-18 | 深圳市深水龙岗水务集团有限公司 | A kind of high-strength ultraviolet light-hydrogen peroxide removes the device of algae toxin in water body |
| CN112619431A (en) * | 2020-10-14 | 2021-04-09 | 宁夏大学 | Equipment for monitoring membrane surface pollution behavior in high-salinity wastewater treatment in real time |
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