CN217265071U - Artificial wetland system for advanced treatment of tail water of sewage treatment plant in leather park - Google Patents
Artificial wetland system for advanced treatment of tail water of sewage treatment plant in leather park Download PDFInfo
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- CN217265071U CN217265071U CN202220292213.6U CN202220292213U CN217265071U CN 217265071 U CN217265071 U CN 217265071U CN 202220292213 U CN202220292213 U CN 202220292213U CN 217265071 U CN217265071 U CN 217265071U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The utility model discloses an artificial wetland system for handling leather garden sewage treatment plant tail water advanced treatment, including waste water through ecological canal, utilize the physics of "soil-plant-microorganism" compound ecosystem, the triple coordination of chemistry and biology, through filtering, adsorb, deposit, ion exchange, microorganism assimilation decomposition and plant absorption etc. approach get rid of the suspended solid in the waste water, organic matter, pollutants such as nitrogen, then get into and stabilize the pond, through the absorption purification of stabilizing the interior animal and plant of pond, further remove the pollutant in order to guarantee to handle the stable discharge to reach standard of effluent. The utility model discloses decontamination effect is showing, easy to manage and maintain, is a system that is used for advanced treatment high salinity leather garden sewage treatment plant tail water specially, has overcome not enough that exists among the current leather garden sewage treatment plant tail water advanced treatment technology, has not only satisfied the water treatment requirement that is strict day by day, has ensured the water environmental safety that human relies on to survive simultaneously.
Description
Technical Field
The utility model belongs to the advanced wastewater treatment field specifically is a constructed wetland system that is used for leather garden sewage treatment plant tail water advanced treatment specially.
Background
The leather wastewater is mainly derived from the wastewater prepared before tanning and the wastewater generated by tanning and other wet processing, and has the characteristics of high concentration of organic matters and ammonia nitrogen, high salinity, sulfide and heavy metal ions and the like. At present, sewage treatment plants in leather park usually adopt a physicochemical and biochemical combined process for treatment, but the effluent quality is unstable, cannot meet the increasing sewage discharge requirement, and the tail water of the sewage treatment plants in the leather park needs to be deeply treated.
The tail water of sewage treatment plants in leather parks has the characteristics of high salinity and high ammonia nitrogen concentration, the conventional biological treatment method has poor treatment effect, the quality of the effluent is unstable, and the relevant emission requirements cannot be met, and the technologies such as Fenton oxidation, iron-carbon micro-electrolysis, activated carbon adsorption and the like have certain treatment effect on the tail water, but have the defects of high investment cost, high operating cost, high operation difficulty and the like. At present, a treatment system special for tail water of a sewage treatment plant in a high-salinity leather park is not provided, so that the tail water treatment system can stably run for a long time, and the quality of outlet water stably reaches the standard, and the requirements of reclaimed water utilization and tail water discharge are met.
SUMMERY OF THE UTILITY MODEL
In order to overcome exist not enough among the above-mentioned prior art, the utility model provides a decontamination effect is showing, easy to manage maintains, is used for handling the constructed wetland system of leather garden sewage treatment plant tail water specially, adopts the combined process of "ecological canal + surface current constructed wetland + perpendicular undercurrent constructed wetland + stabilization pond" to handle the tail water, guarantees that leather garden sewage treatment plant tail water treatment facility can long-term steady operation, goes out the stable up-to-standard of water quality to effectively reduce the harm of tail water to receiving the water.
The purpose of the utility model is realized like this:
the utility model provides a constructed wetland system for handling leather garden sewage treatment plant tail water which characterized in that: tail water enters an ecological channel 1, the ecological channel 1 is connected with a surface flow artificial wetland water distribution channel 2 through a pipeline, the surface flow artificial wetland water distribution channel 2 is built with a surface flow artificial wetland 3, the tail water is uniformly distributed into the surface flow artificial wetland 3 through the surface flow artificial wetland water distribution channel 2, then the water enters a surface flow artificial wetland water outlet channel 4, the surface flow artificial wetland water outlet channel 4 is connected with a vertical subsurface flow artificial wetland water distribution channel 5 through a pipeline, the vertical subsurface flow artificial wetland water distribution channel 5 is combined with a vertical subsurface flow artificial wetland 6, tail water is uniformly distributed into the vertical subsurface flow artificial wetland 6 through the vertical subsurface flow artificial wetland water distribution channel 5, then the water enters a vertical subsurface flow constructed wetland water outlet channel 7, the water discharged from the vertical subsurface flow constructed wetland water outlet channel 7 enters a stabilization pond 8, the stabilization pond 8 is connected with a water outlet inspection well 9 through a pipeline, and the water discharged from the water outlet inspection well 9 is discharged or recycled after reaching the standard.
The ecological ditch 1 is provided with aquatic plants 14 (reeds and iris citriodora) in the ecological ditch, and the bottom of the ecological ditch is paved with a plain soil tamping 11, a clay layer 12 and a planting soil layer 13.
The surface flow artificial wetland 3 is provided with a gabion 17, tail water passes through the surface flow artificial wetland water distribution channel 2 and is uniformly distributed to the surface flow artificial wetland 3, floating leaf plants 18 (rhododendron dauricum and pagodatree leaf apple), emergent water plants 19 (reed and iris falcata) and submerged plants 20 (Goldfish algae, black algae and euglena lineata) are arranged, and the bottom is paved with an impermeable geotextile 15 and ceramsite
And 16, discharging the tail water through the surface flow artificial wetland water outlet channel 4.
In the vertical subsurface flow constructed wetland 6, tail water is uniformly distributed to the vertical subsurface flow constructed wetland 6 through the vertical subsurface flow constructed wetland water distribution channel 5, vertical subsurface flow constructed wetland aquatic plants 26 and vertical subsurface flow constructed wetland matrix gravels (30-80mm)21, zeolites (20-30mm) 22, phosphorus removal fillers (15-20mm)23, slag (10-20mm)24 and beige (5-10mm) 25 are configured, and the tail water flows out through the vertical flow constructed wetland water outlet channel 7.
The stabilization pond 8 is provided with stabilization pond aquatic plants 10.
The effluent inspection well 9 is used for collecting effluent of the stabilization pond 8, and the effluent is discharged or recycled after reaching the standard through the effluent inspection well 9.
Has the positive and beneficial effects that: the utility model relates to a get rid of the effect and show, easy to manage and maintain, be used for handling high salinity leather garden sewage treatment plant tail water system specially, overcome not enough that exists among the current leather garden sewage treatment plant tail water treatment technology, not only satisfied water treatment requirement strict day by day, ensured the water environmental safety that human relies on with the existence simultaneously.
Drawings
Fig. 1, fig. 2, fig. 3, fig. 4 are schematic diagrams of the system structure of the present invention
In the figure: the ecological ditch 1, the surface flow artificial wetland water distribution ditch 2, the surface flow artificial wetland 3, the surface flow artificial wetland water outlet ditch 4, the vertical undercurrent artificial wetland water distribution ditch 5, the vertical undercurrent artificial wetland 6, the vertical undercurrent artificial wetland water outlet ditch 7, the stabilization pond 8, the water outlet inspection well 9, the stabilization pond aquatic plant 10, the plain soil tamp 11, the clay layer 12, the planting soil layer 13, the ecological ditch aquatic plant 14, the anti-seepage geotextile 15, the ceramsite
16. Gabion 17, floating leaf plant 18, emergent aquatic plant 19, submerged plant 20, gravel (30-80mm)21, zeolite (20-30mm) 22, phosphorus removal filler (15-20mm)23, slag (10-20mm)24, rice stone (5-10mm) 25 and vertical subsurface flow constructed wetland aquatic plant 26.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1, an artificial wetland system for treating tail water of a sewage treatment plant in a leather park is characterized in that: tail water enters an ecological canal 1, the ecological canal 1 is connected with a surface flow artificial wetland water distribution canal 2 through a pipeline, the surface flow artificial wetland water distribution canal 2 is built with a surface flow artificial wetland 3, the tail water is uniformly distributed into the surface flow artificial wetland 3 through the surface flow artificial wetland water distribution canal 2, then the water enters a surface flow artificial wetland water outlet channel 4, the surface flow artificial wetland water outlet channel 4 is connected with a vertical subsurface flow artificial wetland water distribution channel 5 through a pipeline, the vertical subsurface flow artificial wetland water distribution channel 5 is combined with a vertical subsurface flow artificial wetland 6, tail water is uniformly distributed into the vertical subsurface flow artificial wetland 6 through the vertical subsurface flow artificial wetland water distribution channel 5, then the water enters a vertical subsurface flow constructed wetland water outlet channel 7, the water discharged from the vertical subsurface flow constructed wetland water outlet channel 7 enters a stabilization pond 8, the stabilization pond 8 is connected with a water outlet inspection well 9 through a pipeline, and the water discharged from the water outlet inspection well 9 reaches the standard and is discharged or recycled.
The leather garden sewage treatment plant tail water is advanced to go into ecological canal 1, utilizes ecological canal aquatic plant 14, absorbs the pollutant in the tail water and purifies, sets up drop weir simultaneously and carries out nature oxygen boosting to the tail water that produces the oxygen deficiency because of the longer distance is carried.
Tail water is uniformly distributed to the surface flow artificial wetland 3 through the surface flow artificial wetland water distribution channel 2, pollutants and suspended matters in the tail water are removed through the absorption and interception functions of plant root systems under the action of floating-leaf plants 18 (red full-bodied river, pagodatree leaf apple), emergent water plants 19 (reed and iris falcata) and submerged plants 20 (golden fish algae, black algae and cleft milkweed), and then the tail water is discharged through the surface flow artificial wetland water outlet channel 4. The impermeable geotextile 15 laid at the bottom prevents the pollution of the underground water caused by the leakage of the system.
The tail water is uniformly distributed to a vertical subsurface flow constructed wetland 6 through a vertical subsurface flow constructed wetland water distribution channel 5, under the action of a vertical subsurface flow constructed wetland substrate and a vertical subsurface flow constructed wetland aquatic plant 26, by utilizing the triple coordination of physics, chemistry and biology of a soil-plant-microorganism composite ecosystem, pollutants such as suspended matters, organic matters, nitrogen and the like in the wastewater are removed through ways such as filtration, adsorption, precipitation, ion exchange, microorganism assimilation and decomposition, plant absorption and the like, and then the water is discharged through a vertical subsurface flow constructed wetland water outlet channel 16.
The tail water automatically flows into a stabilization pond 8, is intercepted and purified by an ecological revetment of the stabilization pond, and is absorbed and purified by animals and plants in the stabilization pond to further remove pollutants.
And the water outlet inspection well 9 is used for collecting the water outlet of the stabilization pond 8, and the water outlet is discharged or recycled after reaching the standard through the water outlet inspection well 9.
Example 1
The treatment capacity of a tail water treatment system of a sewage treatment plant in a certain leather park in Henan is 50000m 3 D, the quality of inlet water is COD 50mg/L, SS 10mg/L, NH 3 -N 5mg/L、TP 0.5mg/L。
Setting an ecological canal 1 with a total area of 3700m 2 The effective water depth is 1m, the hydraulic retention time is 1.78h, a water drop weir is arranged in the device, the water head difference is fully utilized to carry out natural water drop reoxygenation, and salt-tolerant aquatic plants such as reed and iris citri odorata are configured to ensure the degradation capability of the aquatic plants to tail water pollutants under high salinity.
3 surface flow constructed wetlands with total area of 60000m are arranged 2 Average effective water depth of 0.7m and surface hydraulic load of 0.84m 3 /(m 2 D) surface COD load 1.25 g/(m) 2 D), the retention time is 23h, tail water is uniformly distributed to the surface flow artificial wetland 3 through the surface flow artificial wetland water inlet channel 2, pollutants and suspended matters in the tail water are removed through the absorption and interception of plant root systems under the action of the floating leaf plants 18, the emergent aquatic plants 19 and the submerged plants 20, and then the tail water is discharged through the surface flow artificial wetland water outlet channel 4. Adopting salt-tolerant wetland aquatic plants, wherein the floating-leaf plants 18 are red azolla, Japanese pagodatree leaf apples and the like; the emergent aquatic plant 19 is selected from rhizoma Phragmitis, rhizoma Iridis Tectori, etc.; the submerged plant 20 is Goldfish algae, Black algae, and Leonurus lineatus.
A vertical subsurface flow constructed wetland 6 with the total area of 115200m is arranged 2 Effective water depth of 1.2m and surface hydraulic load of 0.43m 3 /(m 2 D), surface COD load 3.99 g/(m) 2 D) water powerThe retention time is 26.54h, tail water is uniformly distributed to the vertical subsurface flow constructed wetland 6 through the vertical subsurface flow constructed wetland water inlet channel 5, under the action of a vertical subsurface flow constructed wetland substrate and a vertical subsurface flow constructed wetland aquatic plant 26, by utilizing the physical, chemical and biological triple coordination action of a soil-plant-microorganism composite ecological system, pollutants such as suspended matters, organic matters, nitrides and the like in waste water are removed through ways such as filtration, adsorption, precipitation, ion exchange, microorganism assimilation decomposition, plant absorption and the like, and then water is discharged through the vertical subsurface flow constructed wetland water outlet channel 7.
8 stabilizing ponds are arranged, and the total area is 10700m 2 Effective water depth is 0.7m, surface COD load is 3.99 g/(m) 2 D), the hydraulic retention time is 3.6h, and the tail water is intercepted and purified by the ecological revetment of the stabilization pond and is absorbed and purified by animals and plants in the stabilization pond to further remove pollutants.
And arranging a water outlet inspection well 9, wherein the effective water depth is 2.3 m. Is used for collecting the effluent of the stabilization pond 8, and the effluent is discharged out after reaching the standard through an effluent inspection well 9.
The quality of the effluent water passing through the tail water treatment system of the ecological canal, the surface flow artificial wetland, the vertical subsurface flow artificial wetland and the stabilization pond reaches the IV-class water standard in the environmental quality Standard of surface Water (GB3838-2002), and the specific water quality is as follows:
COD 30mg/L、NH 3 -N 1.5mg/L、TP 0.3mg/L。
the wastewater treatment system is not only suitable for the deep treatment system of the tail water of the sewage treatment plant in the leather park, but also suitable for the tail water of other industries with similar characteristics.
The above examples are only for illustrating the preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included within the scope of the claimed technical solution of the present invention within the knowledge of those skilled in the art.
Claims (6)
1. The utility model provides a constructed wetland system that is used for leather garden sewage treatment plant tail water degree of depth to handle which characterized in that: tail water enters an ecological channel (1), the ecological channel (1) is connected with a surface flow artificial wetland water distribution channel (2) through a pipeline, the surface flow artificial wetland water distribution channel (2) is built together with a surface flow artificial wetland (3), the tail water is uniformly distributed into the surface flow artificial wetland (3) through the surface flow artificial wetland water distribution channel (2) and then enters a surface flow artificial wetland water outlet channel (4), the surface flow artificial wetland water outlet channel (4) is connected with a vertical subsurface flow artificial wetland water distribution channel (5) through a pipeline, the vertical subsurface flow artificial wetland water distribution channel (5) is built together with a vertical subsurface flow artificial wetland (6), the tail water is uniformly distributed into the vertical subsurface flow artificial wetland (6) through the vertical subsurface flow artificial wetland water distribution channel (5) and then enters a vertical subsurface flow artificial water outlet channel (7), the water of the vertical subsurface flow artificial wetland water outlet channel (7) enters a stable pond (8), the stabilization pond (8) is connected with the water outlet inspection well (9) through a pipeline, and the water outlet of the water outlet inspection well (9) reaches the standard and is discharged or recycled.
2. The constructed wetland system for advanced treatment of the tail water of sewage treatment plants in leather park according to claim 1, characterized in that: the ecological canal (1) is provided with aquatic plants (14), and the bottom of the ecological canal is paved with a soil compactor (11), a clay layer (12) and a planting soil layer (13).
3. The constructed wetland system for advanced treatment of the tail water of sewage treatment plants in leather park according to claim 1, characterized in that: the surface flow constructed wetland (3) is provided with a gabion (17), tail water passes through the surface flow constructed wetland water distribution channel (2) and is uniformly distributed to the surface flow constructed wetland (3), floating leaf plants (18), emergent aquatic plants (19) and submerged plants (20) are arranged, impermeable geotextile (15) and ceramsite (16) are laid at the bottom of the surface flow constructed wetland water distribution channel, and the tail water flows out through the surface flow constructed wetland water distribution channel (4).
4. The constructed wetland system for advanced treatment of the tail water of sewage treatment plants in leather park according to claim 1, characterized in that: in the vertical subsurface flow constructed wetland (6), tail water is uniformly distributed to the vertical subsurface flow constructed wetland (6) through the vertical subsurface flow constructed wetland water distribution channel (5), vertical subsurface flow constructed wetland aquatic plants (26), vertical subsurface flow constructed wetland matrix gravels (21), zeolites (22), phosphorus removal fillers (23), furnace slag (24) and beige (25) are configured, and the tail water is discharged through the vertical flow constructed wetland water outlet channel (7).
5. The constructed wetland system for advanced treatment of the tail water of sewage treatment plants in leather park according to claim 1, characterized in that: the stabilization pond (8) is provided with stabilization pond aquatic plants (10).
6. The constructed wetland system for advanced treatment of the tail water of sewage treatment plants in leather park according to claim 1, characterized in that: the effluent inspection well (9) is used for collecting effluent of the stabilization pond (8), and the effluent is discharged or recycled after reaching the standard through the effluent inspection well (9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220292213.6U CN217265071U (en) | 2022-02-14 | 2022-02-14 | Artificial wetland system for advanced treatment of tail water of sewage treatment plant in leather park |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220292213.6U CN217265071U (en) | 2022-02-14 | 2022-02-14 | Artificial wetland system for advanced treatment of tail water of sewage treatment plant in leather park |
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| CN217265071U true CN217265071U (en) | 2022-08-23 |
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