CN110921926A - High-concentration phosphorus-containing wastewater treatment process based on advanced oxidation method - Google Patents
High-concentration phosphorus-containing wastewater treatment process based on advanced oxidation method Download PDFInfo
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- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 66
- 230000003647 oxidation Effects 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 59
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 52
- 239000011574 phosphorus Substances 0.000 title claims abstract description 52
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 12
- 238000001556 precipitation Methods 0.000 claims abstract description 32
- 239000002351 wastewater Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000004062 sedimentation Methods 0.000 claims abstract description 17
- 238000005516 engineering process Methods 0.000 claims abstract description 16
- 238000005189 flocculation Methods 0.000 claims abstract description 14
- 230000016615 flocculation Effects 0.000 claims abstract description 14
- 239000010802 sludge Substances 0.000 claims abstract description 10
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 238000010276 construction Methods 0.000 claims abstract description 6
- 238000000926 separation method Methods 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 7
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 6
- 238000009303 advanced oxidation process reaction Methods 0.000 claims description 5
- 230000003197 catalytic effect Effects 0.000 claims description 5
- 238000005868 electrolysis reaction Methods 0.000 claims description 5
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 4
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 4
- 239000001110 calcium chloride Substances 0.000 claims description 4
- 238000005188 flotation Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 3
- 239000008394 flocculating agent Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 7
- 239000007800 oxidant agent Substances 0.000 abstract description 7
- 230000001590 oxidative effect Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
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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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46176—Galvanic cells
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
-
- 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
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- 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
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a high-concentration phosphorus-containing wastewater treatment process based on an advanced oxidation method, wherein the water flow trend of the process is that wastewater is subjected to pre-settling or filtering, enters a PH value adjusting area after being lifted, automatically flows into an advanced oxidation area, enters a PH value adjusting area after being subjected to oxidation reaction, is treated by a flocculation precipitation process, and finally enters a precipitation area for precipitation separation; the wastewater reaching the standard after precipitation enters a next-stage treatment structure, and the precipitated sludge is discharged into a sludge treatment system; in the process, the organic phosphorus in the wastewater is converted into inorganic phosphorus by using an advanced oxidation technology, and then the inorganic phosphorus is removed by adopting a flocculation precipitation process; and all functional areas are integrally manufactured into the required sedimentation tank by adopting a co-construction technology. The process adopts an advanced oxidation method, utilizes the oxidation effect of an oxidant to oxidize organic phosphorus in the wastewater into inorganic phosphorus, combines the inorganic phosphorus with a flocculating agent to form floc, and then separates the floc from water.
Description
Technical Field
The invention relates to a technology for converting organic phosphorus in wastewater into inorganic phosphorus for precipitation treatment by adopting a principle advanced oxidation technology, which integrates a dosing area, an advanced oxidation area, a sedimentation tank and the like into a whole.
Background
At present, aiming at phosphorus in sewage, a dosing precipitation process is mainly adopted for treatment, and part of organic phosphorus and a flocculating agent can also react to form flocs so as to be precipitated and removed. However, for organic phosphorus, the currently used flocculating agent has no effect, and a common electrochemical method has no method, so that the wastewater can only enter a subsequent biochemical working section for removal, the treatment efficiency of subsequent biochemical phosphorus removal can only reach 60-80% due to high organic phosphorus content, and the total phosphorus concentration in the effluent is difficult to ensure when the concentration is high. Due to poor treatment effect of the physicochemical section, the effluent is not up to the standard and is frequently discharged.
Disclosure of Invention
The invention aims to provide a high-concentration phosphorus-containing wastewater treatment process based on an advanced oxidation method, which adopts the advanced oxidation method, utilizes the oxidation effect of an oxidant to oxidize organic phosphorus in wastewater into inorganic phosphorus, combines the inorganic phosphorus with a flocculating agent to form flocs, and then separates the flocs from water. Meanwhile, the process adopts a combined construction technology, and reduces the head loss among the connecting pipelines in a mode of opening holes in the tank wall in different functional intervals.
In order to achieve the purpose, the invention adopts the following technical scheme: a high-concentration phosphorus-containing wastewater treatment process based on an advanced oxidation method comprises the steps that wastewater is subjected to pre-settling or filtering, enters a pH value adjusting area after being lifted, automatically flows into an advanced oxidation area, enters a pH value adjusting area after being subjected to oxidation reaction, is treated by a flocculation precipitation process, and finally enters a precipitation area for precipitation separation; the wastewater reaching the standard after precipitation enters a next-stage treatment structure, and the precipitated sludge is discharged into a sludge treatment system; in the process, the organic phosphorus in the wastewater is converted into inorganic phosphorus by using an advanced oxidation technology, and then the inorganic phosphorus is removed by adopting a flocculation precipitation process; and all functional areas are integrally manufactured into the required sedimentation tank by adopting a co-construction technology.
Further, the advanced oxidation process comprises a catalytic oxidation, micro-electrolysis, fenton oxidation or ozone oxidation process.
Furthermore, a flocculating agent or a calcium chloride auxiliary flocculating agent is arranged in the flocculation precipitation process for sedimentation.
Further, when the content of suspended substances SS in the water quality of the inlet water is low, a precipitation process is adopted in the flocculation precipitation process; when the SS content of suspended substances in the water quality of the inlet water is high, a filtering procedure is adopted in the flocculation precipitation process.
Furthermore, all the reaction functional areas are built in a structure.
Further, the form of the sedimentation tank is round or square, and the sedimentation form is sedimentation or air flotation, so that the invention has the beneficial effects that: the process adopts an advanced oxidation method, utilizes the oxidation effect of an oxidant to oxidize organic phosphorus in the wastewater into inorganic phosphorus, combines the inorganic phosphorus with a flocculating agent to form floc, and then separates the floc from water. Meanwhile, the process adopts a combined construction technology, and reduces the head loss among the connecting pipelines in a mode of opening holes in the tank wall in different functional intervals.
Before advanced oxidation, necessary sedimentation or filtration measures can be taken according to different water qualities, and organic matters entering advanced oxidation are reduced, so that the using amount of an oxidant in the advanced oxidation is reduced, and the operation cost is further reduced.
The process integrates a PH adjusting area, a high-grade oxidation area, a PH adjusting and feeding area and a settling area, and saves the manufacturing cost by sharing the pool wall technology.
Wherein, an independent advanced oxidation zone is arranged, and the advanced oxidation zone can adopt catalytic oxidation, Fenton oxidation, micro-electrolysis or ozone oxidation and the like according to different types of organic phosphorus.
Wherein, the advanced oxidation technology is selected in a targeted manner through judging the type of the organic phosphorus in the water, so that the treatment effect is ensured, and the operation cost is reduced.
The advanced oxidation technology includes, but is not limited to, catalytic oxidation, fenton oxidation, micro-electrolysis, ozone oxidation, and the like.
Wherein, after the advanced oxidation reaction, a flocculating agent is simply added, the precipitation effect is poor, the effluent total phosphorus is unqualified, and calcium chloride is added for auxiliary precipitation.
Drawings
FIG. 1 is a functional partition diagram of the present invention;
FIG. 2 is a hydraulic flow diagram of the present invention;
fig. 3 is a diagram of the apparatus layout of the present invention.
Detailed Description
As shown in figures 1 to 3, the high-concentration phosphorus-containing wastewater treatment process based on the advanced oxidation method is disclosed, organic phosphorus in wastewater is converted into inorganic phosphorus by the advanced oxidation technology, then the inorganic phosphorus is removed by the flocculation precipitation method, and each functional area is integrally formed by the combined construction technology.
In the technical scheme of the invention, an advanced oxidation technology is adopted to convert organic phosphorus into inorganic phosphorus.
In the technical scheme of the invention, the advanced oxidation process comprises catalytic oxidation, micro-electrolysis, Fenton oxidation or ozone oxidation.
In the technical scheme of the invention, the flocculating agent or calcium chloride auxiliary flocculating agent is used for sedimentation in the flocculation precipitation method.
In the technical scheme of the invention, the PH values before and after the reaction of the advanced oxidation need to be accurately controlled.
According to the technical scheme, the setting of a precipitation or filtration process in the preorder is determined according to the SS content in the water quality of the inlet water.
In the technical scheme of the invention, all the reaction functional areas are jointly built in one structure.
In the technical scheme of the invention, the form of the sedimentation tank can be round or square, and the like, and the sedimentation form can be sedimentation and air flotation.
In the figure 1, the process for treating high-concentration organic phosphorus wastewater by the advanced oxidation method comprises a dosing area, an advanced oxidation area and a precipitation area. Wherein, the pool walls are shared among all areas, thereby saving the total cost of the pool body. Water flow among the areas flows through the communicating holes among the tank walls, and head loss among communicating pipelines is reduced.
The water flow of the process for treating the high-concentration organic phosphorus wastewater by the advanced oxidation method is pre-settled or filtered, enters a pH value adjusting area 1 after being lifted, enters an advanced oxidation area 2 by flowing, enters a pH value adjusting area 3 after oxidation reaction, reacts by adding a flocculating agent, and then enters a settling area 4 for settling and separation, so that the total phosphorus in the effluent can meet the requirement. And (4) the wastewater reaching the standard after precipitation enters a next-stage treatment structure, and the precipitated sludge is discharged into a sludge treatment system.
The PH value of the process wastewater of treating the high-concentration organic phosphorus wastewater by the advanced oxidation method accurately controls the adding amount of acid and alkali in the reaction process through an online PH meter according to the requirements of the subsequent advanced oxidation process. And the PH readjustment area accurately controls the adding amount of acid and alkali in the reaction process through an online PH meter.
Sludge precipitated in the settling zone is discharged out of the system through sludge scraping and sucking equipment or a gravity flow mode.
The advanced oxidation zone can be added with an oxidant (the type of the oxidant is strong oxidant such as ozone, hydrogen peroxide, sodium hypochlorite and the like) or photocatalytic oxidation (ultraviolet rays or other light sources) to form an oxidation group by self-reaction through adding a filler (not limited to an iron-carbon filler), so that the high medicament cost of advanced oxidation is reduced, and the efficiency of removing total phosphorus is ensured. The total phosphorus of the effluent after advanced oxidation can be controlled below 0.5 mg/l.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A high-concentration phosphorus-containing wastewater treatment process based on an advanced oxidation method is characterized in that the water flow trend of the process is that wastewater is subjected to pre-settling or filtration, enters a PH value adjusting area after being lifted, automatically flows into an advanced oxidation area, enters a PH value adjusting area after being subjected to oxidation reaction, is treated by a flocculation precipitation process, and finally enters a precipitation area for precipitation separation; the wastewater reaching the standard after precipitation enters a next-stage treatment structure, and the precipitated sludge is discharged into a sludge treatment system; in the process, the organic phosphorus in the wastewater is converted into inorganic phosphorus by using an advanced oxidation technology, and then the inorganic phosphorus is removed by adopting a flocculation precipitation process; and all functional areas are integrally manufactured into the required sedimentation tank by adopting a co-construction technology.
2. The advanced oxidation process-based high concentration phosphorus-containing wastewater treatment process according to claim 1, wherein the advanced oxidation process comprises a catalytic oxidation, micro-electrolysis, fenton oxidation or ozone oxidation process.
3. The advanced oxidation based high concentration phosphorus wastewater treatment process according to claim 1, wherein the flocculation precipitation process is performed by setting a flocculant or a calcium chloride auxiliary flocculant for sedimentation.
4. The advanced oxidation based high concentration phosphorus wastewater treatment process according to claim 1, wherein when the feed water quality has a low content of Suspended Solids (SS), a precipitation step is adopted in the flocculation precipitation process; when the SS content of suspended substances in the water quality of the inlet water is high, a filtering procedure is adopted in the flocculation precipitation process.
5. The advanced oxidation based high concentration phosphorus wastewater treatment process as claimed in claim 1, wherein all the reaction functional zones are integrated in one structure.
6. The advanced oxidation based high concentration phosphorus wastewater treatment process as claimed in claim 5, wherein the form of said sedimentation tank is round or square, and the sedimentation form is sedimentation or air flotation.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112174435A (en) * | 2020-09-30 | 2021-01-05 | 岳阳林纸股份有限公司新港天岳环保分公司 | Grease wastewater treatment method and treatment system |
| CN112591846A (en) * | 2020-12-24 | 2021-04-02 | 北京安力斯环境科技股份有限公司 | MPUV advanced oxidation system for treating high-concentration and difficultly-degraded organic wastewater |
| CN113023991A (en) * | 2021-03-17 | 2021-06-25 | 山东滨农科技有限公司 | System for treating high-concentration organic phosphorus wastewater and treatment process thereof |
| CN113045041A (en) * | 2021-03-19 | 2021-06-29 | 常熟理工学院 | Treatment method of high-concentration organic phosphorus wastewater |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112174435A (en) * | 2020-09-30 | 2021-01-05 | 岳阳林纸股份有限公司新港天岳环保分公司 | Grease wastewater treatment method and treatment system |
| CN112591846A (en) * | 2020-12-24 | 2021-04-02 | 北京安力斯环境科技股份有限公司 | MPUV advanced oxidation system for treating high-concentration and difficultly-degraded organic wastewater |
| CN113023991A (en) * | 2021-03-17 | 2021-06-25 | 山东滨农科技有限公司 | System for treating high-concentration organic phosphorus wastewater and treatment process thereof |
| CN113045041A (en) * | 2021-03-19 | 2021-06-29 | 常熟理工学院 | Treatment method of high-concentration organic phosphorus wastewater |
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Inventor after: Zhao Dongxia Inventor after: Wang Mengbo Inventor after: Cao Xuefeng Inventor before: Cao Xuefeng Inventor before: Wang Mengbo Inventor before: Zhao Dongxia |
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Application publication date: 20200327 |