CN218058635U - A adsorb phosphorus removal device for domestic sewage treatment plant tail water - Google Patents
A adsorb phosphorus removal device for domestic sewage treatment plant tail water Download PDFInfo
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- CN218058635U CN218058635U CN202222145094.4U CN202222145094U CN218058635U CN 218058635 U CN218058635 U CN 218058635U CN 202222145094 U CN202222145094 U CN 202222145094U CN 218058635 U CN218058635 U CN 218058635U
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Abstract
The utility model discloses an adsorption dephosphorization device for tail water of a domestic sewage treatment plant, which comprises a shell, wherein a filter plate, a bearing layer and a dephosphorization layer are arranged in the shell from bottom to top in sequence; a water inlet is arranged on the shell below the filter plate; a water outlet is arranged on the shell above the dephosphorization layer. The utility model has the advantages that: the utility model has simple structure and easy realization, can effectively dephosphorize the tail water after biochemical treatment in the urban domestic sewage plant, ensures that the total phosphorus concentration of the tail water is stably lower than 0.3mg/L, meets the discharge requirement, avoids treating the residual total phosphorus in the biochemical effluent by adopting a chemical phosphorus removal mode, further reduces the sewage treatment cost and simultaneously reduces the sludge yield; the sewage treatment efficiency of enterprises is improved.
Description
The technical field is as follows:
the utility model relates to a domestic sewage treatment technical field, in particular to an absorption phosphorus removal device for domestic sewage treatment plant tail water.
Background art:
in a domestic sewage treatment plant, a biochemical treatment process has a certain phosphorus removal effect, but due to the limitation of biochemical phosphorus removal, the total phosphorus concentration of effluent of biochemical treatment of urban domestic sewage is often difficult to be lower than 0.5mg/L. In order to meet the requirement of the first grade A total phosphorus emission limit of the pollutant emission standard of the urban sewage treatment plant (GB 18918-2002) regulated by the state, the urban sewage treatment plant often adopts a chemical phosphorus removal mode to treat the residual total phosphorus in the biochemical effluent, thereby increasing the cost of sewage treatment agents and the yield of sludge. Meanwhile, in urban dense areas or environment sensitive areas, the limit value of total phosphorus in effluent of urban sewage treatment plants is higher, and the total phosphorus is required to be controlled not to exceed 0.3mg/L. The control pressure and the operation cost of the phosphorus pollutants in the sewage of the urban sewage plant are further improved.
In order to solve the problem of tail water phosphorus pollution control of the current urban domestic sewage treatment plant, the development of an adsorption phosphorus removal device for the tail water of the domestic sewage treatment plant is urgently needed to realize the rapid and efficient treatment of phosphorus in the tail water.
The utility model has the following contents:
the utility model aims to at least solve one of the technical problems existing in the tail water chemical dephosphorization process of the existing urban domestic sewage plant.
The utility model discloses by following technical scheme implement: the purpose of the patent is to provide an adsorption dephosphorization device for tail water of a domestic sewage treatment plant, which comprises a shell, wherein a filter plate, a supporting layer and a dephosphorization layer are sequentially arranged in the shell from bottom to top; a water inlet is formed in the shell below the filter plate; and a water outlet is formed in the shell above the dephosphorization layer.
Furthermore, the material composition of the bearing layer is at least one layer of quartz sand.
Further, the material of the dephosphorizing layer consists of Tao Litu, bentonite, iron ions and magnesium ions.
Furthermore, the top of the shell is provided with an opening, a ring plate is fixed on the inner wall of the shell above the dephosphorization layer, a baffle plate with the top lower than the top of the shell is vertically fixed on the inner edge of the ring plate, and a water outlet groove is formed between the baffle plate and the inner wall of the shell; the water outlet is arranged on the side wall of the water outlet groove.
Further, the device also comprises a sodium hydroxide solution storage tank, and a liquid outlet of the sodium hydroxide solution storage tank is communicated with the top opening of the shell.
Further, the device also comprises an internal circulation pump, wherein an internal circulation liquid outlet is formed in the side wall of the shell between the dephosphorization layer and the annular plate; the inner circulation liquid outlet is communicated with the liquid inlet of the inner circulation pump through a pipeline, and the liquid outlet of the inner circulation pump is communicated with the water inlet through a pipeline.
Furthermore, a liquid discharge pipe is communicated with the bottom of the shell.
The utility model has the advantages that: 1. the utility model discloses simple structure, easy realization, through pack into filter, supporting layer and dephosphorization adsorbent in the casing after, can be effectual carry out dephosphorization to the tail water after the biochemical treatment of town domestic sewage factory, make the total phosphorus concentration of tail water stably be less than 0.3mg/L, reach and discharge the requirement, avoided adopting the mode of chemical dephosphorization to handle the remaining total phosphorus in the biochemical effluent simultaneously, and then reduced sewage treatment cost, reduced mud output simultaneously; 2. the sewage treatment capacity of the device can reach 50m at most 3 Can be repeatedly used for dephosphorization treatment of tail water after regeneration treatment, thereby improving the sewage treatment efficiency of enterprises.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 isbase:Sub>A schematic cross-sectional view ofbase:Sub>A portionbase:Sub>A-base:Sub>A in fig. 1.
The device comprises a shell 1, a water inlet 11, a water outlet 12, an internal circulation liquid outlet 13, a sodium hydroxide solution storage tank 2, an internal circulation pump 3, a filter plate 4, a supporting layer 5, a dephosphorization layer 6, a liquid discharge pipe 7, a ring plate 8, a baffle plate 9 and a water outlet groove 10.
The specific implementation mode is as follows:
as shown in fig. 1-2, an adsorption dephosphorization apparatus for tail water of a domestic sewage treatment plant comprises a housing 1, a sodium hydroxide solution storage tank 2 and an internal circulation pump 3, wherein the size of the housing 1 is phi 1.2m × 3.5m, the housing 1 is made of 304 stainless steel, the thickness of a side plate is 5mm, the thickness of a bottom plate is 8mm, a filter plate 4, a support layer 5 and a dephosphorization layer 6 are sequentially arranged in the housing 1 from bottom to top, the filter plate 4 is arranged for treating and filtering sewage and filtering large-diameter impurities in the sewage, the support layer 5 is arranged for treating and filtering sewage and enabling the sewage to uniformly distribute and enter the dephosphorization layer 6; a water inlet 11 is arranged on the shell 1 below the filter plate 4; a water outlet 12 is arranged on the shell 1 above the dephosphorization layer 6, and a liquid discharge pipe 7 is communicated with the bottom of the shell 1.
The supporting layer 5 is made of 3 layers of quartz sand, the bottom layer adopts quartz sand with the particle size of 4-8mm and the thickness is 0.1m, the middle layer adopts quartz sand with the particle size of 2-4mm and the thickness is 0.1m, and the upper layer adopts quartz sand with the particle size of 1-2mm and the thickness is 0.1m.
The material of the dephosphorizing layer 6 consists of Tao Litu, bentonite, iron ions and magnesium ions; the mass ratio of each component is 1000; wherein the height of the dephosphorizing layer 6 is 1.5m.
The top of the shell 1 is provided with an opening, a ring plate 8 is fixed on the inner wall of the shell 1 above the dephosphorization layer 6, a baffle plate 9 with the top lower than the top of the shell 1 is vertically fixed on the inner edge of the ring plate 8, and a water outlet groove 10 is formed between the baffle plate 9 and the inner wall of the shell 1; the water outlet 12 is arranged on the side wall of the water outlet groove 10.
A liquid outlet of the sodium hydroxide solution storage tank 2 is communicated with the top opening of the shell 1; an internal circulation liquid outlet 13 is arranged on the side wall of the shell 1 between the dephosphorization layer 6 and the annular plate 8; the inner circulation liquid outlet 13 is communicated with the liquid inlet of the inner circulation pump 3 through a pipeline, and the liquid outlet of the inner circulation pump 3 is communicated with the water inlet 11 through a pipeline; the flow rate of the internal circulation pump 3 is 2m 3 /h。
The working principle is as follows: tail water of urban domestic sewage treatment plant with total phosphorus concentration of 0.6mg/L is treated according to the water inlet flow of 2m 3 The tail water enters the utility model from the water inlet 11 through the pump, after passing through the filter plate 4 and the supporting layer 5 in sequence, the tail water is filtered and evenly distributed and then enters the dephosphorization layer 6, and the material of the dephosphorization layer 6 and the total phosphorus in the tail water are adsorbed, so that the purpose of reducing the total phosphorus in the tail water is achieved; the total phosphorus concentration of the tail water treated by the dephosphorization layer 6 can be stably lower than 0.3mg/L and is discharged from the water outlet 12, so that the aim of meeting the discharge requirement is fulfilled, the residual total phosphorus in the biochemical effluent is prevented from being treated by adopting a chemical dephosphorization mode, the sewage treatment cost is further reduced, and the sludge yield is reduced.
The treatment capacity of the tail water of the utility model is accumulated to 50m 3 Then, the utility model switches to the circulation desorption regeneration operation, stops the tail water from entering water, adds 5L of sodium hydroxide solution with the concentration of 1mol/L into the shell 1 from the top opening of the shell 1, opens the internal circulation pump 3, and after the circulation operation is carried out for 2h, the total phosphorus absorbed in the dephosphorization layer 6 is desorbed into the desorption liquid, and the desorption liquid is discharged from the liquid discharge pipe 7; after the regeneration of circulation desorption is accomplished, the utility model discloses can be used for the total phosphorus advanced treatment of town domestic sewage treatment plant tail-water again to from the circulation operation.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the present invention.
Claims (6)
1. An adsorption dephosphorization device for tail water of a domestic sewage treatment plant is characterized by comprising a shell, wherein a filter plate, a supporting layer and a dephosphorization layer are sequentially arranged in the shell from bottom to top; a water inlet is formed in the shell below the filter plate; and a water outlet is formed in the shell above the dephosphorization layer.
2. The device for absorbing and removing phosphorus in the tail water of the domestic sewage treatment plant according to claim 1, wherein the material composition of the supporting layer is at least one layer of quartz sand.
3. The device for adsorbing and removing phosphorus in the tail water of the domestic sewage treatment plant according to claim 1 or 2, wherein the top of the shell is provided with an opening, a ring plate is fixed on the inner wall of the shell above the phosphorus removal layer, a baffle plate with the top lower than the top of the shell is vertically fixed on the inner edge of the ring plate, and a water outlet groove is formed between the baffle plate and the inner wall of the shell; the water outlet is arranged on the side wall of the water outlet groove.
4. The phosphorus adsorption and removal device for the tail water of the domestic sewage treatment plant according to claim 3, further comprising a sodium hydroxide solution storage tank, wherein a liquid outlet of the sodium hydroxide solution storage tank is communicated with the top opening of the shell.
5. The device for adsorbing and removing phosphorus in tail water of a domestic sewage treatment plant according to claim 4, further comprising an internal circulation pump, wherein an internal circulation liquid outlet is formed in the side wall of the shell between the phosphorus removal layer and the annular plate; the inner circulation liquid outlet is communicated with the liquid inlet of the inner circulation pump through a pipeline, and the liquid outlet of the inner circulation pump is communicated with the water inlet through a pipeline.
6. The device for adsorbing and removing phosphorus in the tail water of the domestic sewage treatment plant according to claim 5, wherein a drain pipe is communicated with the bottom of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222145094.4U CN218058635U (en) | 2022-08-15 | 2022-08-15 | A adsorb phosphorus removal device for domestic sewage treatment plant tail water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222145094.4U CN218058635U (en) | 2022-08-15 | 2022-08-15 | A adsorb phosphorus removal device for domestic sewage treatment plant tail water |
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| Publication Number | Publication Date |
|---|---|
| CN218058635U true CN218058635U (en) | 2022-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222145094.4U Active CN218058635U (en) | 2022-08-15 | 2022-08-15 | A adsorb phosphorus removal device for domestic sewage treatment plant tail water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218058635U (en) |
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2022
- 2022-08-15 CN CN202222145094.4U patent/CN218058635U/en active Active
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