CN214570924U - Silicon carbide film filtering device for clarifying desulfurization wastewater of thermal power plant - Google Patents
Silicon carbide film filtering device for clarifying desulfurization wastewater of thermal power plant Download PDFInfo
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- CN214570924U CN214570924U CN202120712528.7U CN202120712528U CN214570924U CN 214570924 U CN214570924 U CN 214570924U CN 202120712528 U CN202120712528 U CN 202120712528U CN 214570924 U CN214570924 U CN 214570924U
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Abstract
The utility model discloses a silicon carbide membrane filter equipment that can be used for thermal power plant's desulfurization waste water clarification, including two silicon carbide membrane filter circulating pumps that set up side by side, the exit end of two silicon carbide membrane filter circulating pumps is connected with the silicon carbide membrane filter respectively, and the clear liquid collecting tank is connected to the silicon carbide membrane filter exit end, still includes acidizing fluid jar and scale removal washing jar, and acidizing fluid jar and scale removal washing jar converge to connect the washing regeneration pump all the way, wash the outlet end of regeneration pump and connect the inlet end of silicon carbide membrane filter circulating pump; the device also comprises a clear liquid backflushing pump, wherein the inlet end of the clear liquid backflushing pump is connected with a clear liquid collecting tank, and the outlet end of the clear liquid backflushing pump is connected with a silicon carbide film filter; the utility model discloses simple structure, setting scientific and reasonable, filter effect are good, can effectively filter the solid particle impurity of getting rid of among the desulfurization waste water.
Description
Technical Field
The utility model belongs to the technical field of thermal power plant's flue gas wet flue gas desulfurization waste water treatment, a carborundum membrane filter equipment that can be used to thermal power plant's desulfurization waste water clarification is related to.
Background
The thermal power is used as water for large households and drains water, the water accounts for 20% of the total industrial amount, and the heat pump water-saving system has great significance in saving power generation water, improving the reuse rate of circulating water and realizing zero discharge of waste water of the thermal power plant from the aspects of economic operation and environmental protection. The traditional power plant wastewater treatment can be easily applied in different levels in a gradient way, each wastewater is solved through the traditional mature process, but the wastewater with the most complex highest concentration and the most difficult to treat is the desulfurization wastewater, and due to the particularity, complexity and strong corrosivity of the components, the treatment becomes a key factor for restricting the zero discharge of the wastewater of the thermal power plant. The demand of thermal power enterprises for realizing zero emission of desulfurization degree water is more and more urgent, and the demand is about to become a necessary trend in the future.
The desulfurized wastewater generally has the following characteristics: 1. the water quality is weakly acidic; 2. high suspended matter content and difficult natural precipitation (gypsum particles, silica, hydroxides of aluminum and iron); 3. the chloride, the chemical oxygen demand and the heavy metal exceed the standard, wherein the chloride, the chemical oxygen demand and the heavy metal exceed the standard, and the chloride, the chemical oxygen demand and the heavy metal comprise the 1 st pollutants which are strictly limited to be discharged in China, such as mercury, spirit, lead and the like; 4. the hardness ions are high, and a large amount of magnesium, calcium and other ions are contained; 5. the salt content is high, and the salt content contains a large amount of chloride ions, sulfate ions, sulfite ions and other ions, wherein the concentration of the chloride ions is as high as 5000-; 6. the content of ammonia nitrogen exceeds the standard; 7. the difference between the water quality and the water quantity is large.
At present, most of power plant desulfurization wastewater treatment uses a traditional triple box chemical treatment process, and the process has strong dependence on chemical agents, higher construction, operation and maintenance costs and larger occupied area. Under the background, in order to solve the problems of high suspended matter content and difficult precipitation of the desulfurization wastewater, a physical filtering device is necessary to be researched and developed, and a chemical agent treatment process is abandoned, so that the construction and operation cost and the load of subsequent wastewater treatment equipment are reduced, and the stable operation of the desulfurization wastewater is realized.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a silicon carbide membrane filter equipment that can be used to thermal power plant's desulfurization waste water clarification for solid particle thing impurity in the desulfurization waste water is got rid of in the filtration, solid content and turbidity in the reduction desulfurization waste water.
The utility model adopts the technical scheme that the silicon carbide film filtering device for clarifying the desulfurization wastewater of the thermal power plant comprises two silicon carbide film filtering circulating pumps which are arranged side by side, wherein the outlet ends of the two silicon carbide film filtering circulating pumps are respectively connected with a silicon carbide film filter, the outlet end of the silicon carbide film filter is connected with a clear liquid collecting tank, and the silicon carbide film filtering circulating pump also comprises an acid liquid tank and a descaling cleaning tank, the acid liquid tank and the descaling cleaning tank are converged to one path and are connected with a cleaning regeneration pump, and the outlet end of the cleaning regeneration pump is connected with the inlet end of the silicon carbide film filtering circulating pump; the device also comprises a clear liquid backflushing pump, wherein the inlet end of the clear liquid backflushing pump is connected with a clear liquid collecting tank, and the outlet end of the clear liquid backflushing pump is connected with a silicon carbide film filter.
The utility model discloses a characteristics still lie in:
wherein the inlet of the silicon carbide film filtering circulating pump is also connected with a row of main pipes for receiving desulfurization wastewater, and the row of main pipes and the silicon carbide film filtering circulating pump are positioned on the same central line.
The two silicon carbide film filters respectively comprise 3 silicon carbide film shells, the 3 silicon carbide film shells are vertically arranged on a horizontally arranged header pipe, and the 3 silicon carbide film shells are arranged on the header pipe side by side, and the bottoms of the header pipes are provided with valves for emptying or discharging concentrated liquid; 3 silicon carbide membrane shells are connected through a top communicating pipe and run in series;
wherein the bottom of the silicon carbide membrane shell is provided with rubber expansion joints for reducing vibration;
the top of the side surface of the silicon carbide film shell is also provided with a water outlet which is connected with a clear liquid collecting tank, the lower part of the side surface of the silicon carbide film shell is provided with a water outlet A, and the water outlet A is connected with the outlet end of a clear liquid backflushing pump;
wherein the communicating pipe at the top of the silicon carbide film shell is provided with an exhaust pipeline, and an exhaust port of the exhaust pipeline is higher than the communicating pipe;
wherein the acid solution tank, the descaling cleaning tank and the clear liquid collecting tank are all cylindrical closed containers.
The utility model has the advantages that:
the silicon carbide film filtering device for clarifying the desulfurization wastewater of the thermal power plant has the advantages of simple structure, scientific and reasonable arrangement and good filtering effect, and can effectively filter and remove solid particle impurities in the desulfurization wastewater; after the utility model is put into operation, the purposes of reducing the solid content in the desulfurization wastewater slurry and reducing the subsequent water treatment load or directly recycling can be achieved; through the actual test, the utility model discloses after 600MW thermal power generating unit puts into use, effectively reduced desulfurization waste water turbidity, the operation in-process does not use chemical agent, and degree of automation is higher, and personnel's operation and maintenance cost are low, have saved working costs and maintenance cost, have the value of using widely.
Drawings
FIG. 1 is a schematic three-dimensional plan view of a silicon carbide membrane filter device for clarifying desulfurization wastewater of a thermal power plant according to the present invention;
FIG. 2 is a front view of a silicon carbide membrane filter device for clarifying desulfurization waste water of a thermal power plant according to the present invention;
FIG. 3 is a top view of a silicon carbide membrane filter device of the present invention for clarifying desulfurization waste water of a thermal power plant;
fig. 4 is a side view of the silicon carbide membrane filter device for clarifying desulfurization waste water of a thermal power plant according to the present invention.
In the figure, 1, a silicon carbide membrane filtration circulating pump, 2, a silicon carbide membrane filter, 3, a clear liquid back flushing pump, 4, a clear liquid collecting tank, 5, a silicon carbide membrane shell, 6, an acid liquid tank, 7, a descaling cleaning tank and 8, a cleaning regeneration pump.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The silicon carbide film has the greatest advantages that firstly, pretreatment is not needed, secondly, the flux is large, the desulfurization wastewater can be directly purified, the process flow is greatly shortened, and the dependence of desulfurization wastewater treatment on chemicals is fundamentally avoided, so that various hidden dangers caused by the chemicals to health and environment and the cost caused by the hidden dangers are eliminated; this is a purely physical purification process, the advancement of which is incomparable with other processes.
Therefore, the utility model provides a silicon carbide membrane filter equipment that can be used for clarification of thermal power plant's desulfurization waste water, as shown in fig. 1 and fig. 2, including two silicon carbide membrane filter circulating pumps 1 that set up side by side, desulfurization waste water incoming material pipeline inserts silicon carbide membrane filter circulating pump 1 inlet pipeline, and silicon carbide membrane filter 2 arranges on silicon carbide membrane filter circulating pump 1 outlet pipeline, and the row's of being in line mother pipe and silicon carbide membrane filter circulating pump 1 of silicon carbide membrane filter circulating pump 1 inlet are on same central line;
the outlet ends of the two silicon carbide film filtering circulating pumps 1 are respectively connected with silicon carbide film filters 2, and as shown in figure 1, two sets of silicon carbide film filters 2 are designed for the silicon carbide film filtering device to run in parallel and are symmetrically arranged according to the treatment capacity and medium parameters; each set of silicon carbide filter 2 corresponds to one silicon carbide filter circulating pump 1;
the silicon carbide membrane shells 5 are main components of the silicon carbide membrane filters 2, each silicon carbide membrane filter 2 comprises 3 silicon carbide membrane shells 5, the 3 silicon carbide membrane shells 5 are vertically arranged on a horizontally-placed main connecting-discharging pipe, the 3 silicon carbide membrane shells are arranged on the main connecting-discharging pipe side by side, the main connecting-discharging pipe is a side-by-side pipeline arranged between the silicon carbide membrane filter 2 and a silicon carbide membrane filtration and circulation pump 1 and used for forming a closed circulation pipeline, fixed transverse distance and longitudinal distance are kept between the silicon carbide membrane shells 5, and a valve is arranged at the bottom of the main connecting-discharging pipe and used for emptying or discharging concentrated liquid; the 3 silicon carbide membrane shells 5 are connected through a top communicating pipe and run in series, and rubber expansion joints are arranged at the bottoms of the silicon carbide membrane shells 5 and used for reducing vibration; as shown in fig. 1, desulfurization wastewater is conveyed to a first group of header pipes and a silicon carbide membrane shell 5 through a silicon carbide membrane filtration and circulation pump 1, enters a second group of silicon carbide membrane shell 5 and header pipes through a communication pipeline at the top, and is converged into an inlet of the silicon carbide membrane filtration and circulation pump 1 together with desulfurization wastewater incoming materials to form closed circulation;
as shown in fig. 3 and 4, the top of the side surface of the silicon carbide membrane shell 5 is further provided with a water outlet, the clear liquid filtered and clarified by the silicon carbide membrane is output from the water outlet at the upper part of the side surface of the silicon carbide membrane shell 5, the water outlet is connected with the clear liquid collecting tank 4, the lower part of the side surface of the silicon carbide membrane shell 5 is provided with a water outlet a for emptying water stored in the membrane shell, and the water outlet a is connected with the outlet end of the clear liquid backflushing pump 3 for backflushing the silicon carbide membrane; an exhaust pipeline is arranged on the communicating pipe at the top of the silicon carbide membrane shell 5, and an exhaust port of the exhaust pipeline is higher than the communicating pipe;
the device also comprises an acid liquor tank 6 and a descaling cleaning tank 7, wherein the acid liquor tank 6 and the descaling cleaning tank 7 are converged to one path and connected with a cleaning regeneration pump 8, and the outlet end of the cleaning regeneration pump 8 is connected with the inlet end of the silicon carbide membrane filtration circulating pump 1; the two sets of silicon carbide filters 2 share one cleaning regeneration pump 8, and the flushing sequence is controlled by a valve; the device also comprises a clear liquid backflushing pump 3, wherein the inlet end of the clear liquid backflushing pump 3 is connected with a clear liquid collecting tank 4, and the outlet end of the clear liquid backflushing pump 3 is connected with a silicon carbide film filter 2; the acid liquor tank 6, the descaling and cleaning tank 7 and the clear liquid collecting tank 4 are all cylindrical closed containers.
The utility model discloses an embodiment as follows:
the designed treatment capacity of the silicon carbide film filtering device is 2 multiplied by 12.5m3/h, and the solid content concentration of the incoming desulfurization wastewater is 5-10%; two sets of silicon carbide membrane filters 2 are designed to run in parallel, the design treatment capacity of each set of silicon carbide membrane filter 2 is 12.5m3/h, and each set of silicon carbide membrane filter 2 comprises six silicon carbide membrane shells 5; in actual operation, one set of silicon carbide filter 2 can be started to operate or two sets of silicon carbide filters 2 can be started to operate simultaneously according to requirements;
the flow rate of the silicon carbide film filtering circulating pump 1 is 120m3/h, and the head is 40m water column; the flow rate of the cleaning regeneration pump 8 is 25m3/h, and the head is 20m water column; the flow rate of the clear liquid back flushing pump 3 is 25m3/h, and the head is 50m water column;
the length, width and height of the whole silicon carbide film filtering device are 8387mm multiplied by 6238mm multiplied by 3453mm, and the length, width and height of each frame are 3477mm multiplied by 560mm multiplied by 2485 mm; the silicon carbide film filter 2 consists of two groups of silicon carbide film shells 5, and each group of three silicon carbide film shells 5 are arranged on the row-connected main pipes side by side according to the distance of 500 mm; each row of mother tubes is DN200 × 1670mm in size, and is horizontally placed, one end is used for feeding, and the other end is blocked, so that the total number of the mother tubes is four; the bottom of each row of main pipes is provided with a discharge pipeline and a valve of DN 50;
the silicon carbide membrane shells 5 are vertically arranged, the size of each membrane shell is DN200 multiplied by 1050mm, the silicon carbide membrane shells 5 are connected with the inlet and outlet pipelines by flanges, the size of each flange is DN100, and DN100 rubber expansion joints are arranged between the bottom of each silicon carbide membrane shell 5 and the row mother pipes;
clear liquid obtained after clarification by the silicon carbide membrane filter 2 is discharged from the side surfaces of the silicon carbide membrane shells 5, 1 DN40 water producing port is arranged on the side surface of each silicon carbide membrane shell 5, the distance from the side surface of each silicon carbide membrane shell 5 to a flange is 50mm, 1 DN40 water discharging port is arranged at the lower part of the side surface of each silicon carbide membrane shell 5 and used for emptying, and the distance from the side surface of each silicon carbide membrane shell 5 to the flange is 50 mm. The clear liquid is finally collected into a clear liquid collecting tank 4;
the top communicating pipe of each silicon carbide membrane shell 5 is provided with an exhaust pipeline of DN50, the height of the exhaust port of the exhaust main pipe is 3453mm, and the exhaust port is 711mm higher than the central line of the communicating pipe;
desulfurization waste water incoming material pipeline D65 is by 3450mm, inserts carborundum membrane filtration circulating pump 1 entry pipeline DN200 by 820mm, and carborundum membrane filtration circulating pump 1 outlet pipeline is the type of falling U pipeline, and DN80 rubber expansion joint is installed to the bottom, and the parameter is DN80 by 660 mm. And pressure transmitters are arranged on the pipelines from the outlet of the silicon carbide film filtering and circulating pump 1 to the first group of silicon carbide film shells 5.
After desulfurization waste water feeding got into the female pipe of first antithetical couplet row, the uniform distribution back got into from 5 bottoms on carborundum membrane shell, exports from 5 tops on the carborundum membrane shell, through second group carborundum membrane shell 5 backs, converges into the female pipe of second antithetical couplet row, gets into carborundum membrane filtration circulating pump 1 inlet pipeline. The distance between the central lines of the two rows of mother pipes is 946 mm. The main pipe of the row at the inlet of the silicon carbide membrane filtering and circulating pump 1 and the silicon carbide membrane filtering and circulating pump 1 are on the same central line.
The acid liquor tank 6, the descaling and cleaning tank 7 and the clear liquid collecting tank 4 are all cylindrical closed containers with the volume of 1 cubic meter.
Claims (7)
1. The silicon carbide film filtering device for clarifying desulfurization wastewater of a thermal power plant is characterized by comprising two silicon carbide film filtering circulating pumps (1) which are arranged side by side, wherein outlet ends of the two silicon carbide film filtering circulating pumps (1) are respectively connected with a silicon carbide film filter (2), the outlet end of the silicon carbide film filter (2) is connected with a clear liquid collecting tank (4), the silicon carbide film filtering device further comprises an acid liquid tank (6) and a descaling cleaning tank (7), the acid liquid tank (6) and the descaling cleaning tank (7) are converged to one path and connected with a cleaning regeneration pump (8), and the outlet end of the cleaning regeneration pump (8) is connected with the inlet ends of the silicon carbide film filtering circulating pumps (1); the device also comprises a clear liquid backflushing pump (3), wherein the inlet end of the clear liquid backflushing pump (3) is connected with a clear liquid collecting tank (4), and the outlet end of the clear liquid backflushing pump (3) is connected with the silicon carbide film filter (2).
2. The silicon carbide membrane filtering device for clarifying desulfurization wastewater of a thermal power plant as claimed in claim 1, wherein an inlet of the silicon carbide membrane filtering and circulating pump (1) is further connected with a header pipe for receiving desulfurization wastewater, and the header pipe and the silicon carbide membrane filtering and circulating pump (1) are on the same central line.
3. The silicon carbide membrane filter device for clarifying desulfurization wastewater of a thermal power plant according to claim 1, wherein two groups of the silicon carbide membrane filters (2) respectively comprise 3 silicon carbide membrane shells (5), the 3 silicon carbide membrane shells (5) are vertically arranged on a horizontally arranged header pipe, the 3 silicon carbide membrane shells are arranged on the header pipe side by side, and the bottom of the header pipe is provided with a valve for emptying or discharging concentrated solution; and 3 silicon carbide membrane shells (5) are connected through a top communicating pipe and run in series.
4. The silicon carbide membrane filtering device for clarifying thermal power plant desulfurization waste water according to claim 3, wherein rubber expansion joints are installed at the bottom of the silicon carbide membrane shell (5) for reducing vibration.
5. The silicon carbide membrane filtering device for clarifying desulfurization wastewater of a thermal power plant as claimed in claim 3, wherein a water outlet is further formed in the top of the side surface of the silicon carbide membrane shell (5), the water outlet is connected with the clear liquid collecting tank (4), a water outlet A is formed in the lower portion of the side surface of the silicon carbide membrane shell (5), and the water outlet A is connected with the outlet end of the clear liquid backflushing pump (3).
6. The silicon carbide membrane filter device for clarifying desulfurization wastewater of a thermal power plant as claimed in claim 3, wherein an exhaust pipeline is installed on the communicating pipe at the top of the silicon carbide membrane shell (5), and an exhaust port of the exhaust pipeline is higher than the communicating pipe.
7. The silicon carbide membrane filtering device for clarifying desulfurization wastewater of a thermal power plant according to claim 1, wherein the acid liquor tank (6), the descaling and cleaning tank (7) and the clear liquid collecting tank (4) are all cylindrical closed containers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120712528.7U CN214570924U (en) | 2021-04-08 | 2021-04-08 | Silicon carbide film filtering device for clarifying desulfurization wastewater of thermal power plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120712528.7U CN214570924U (en) | 2021-04-08 | 2021-04-08 | Silicon carbide film filtering device for clarifying desulfurization wastewater of thermal power plant |
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| Publication Number | Publication Date |
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| CN214570924U true CN214570924U (en) | 2021-11-02 |
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| CN202120712528.7U Active CN214570924U (en) | 2021-04-08 | 2021-04-08 | Silicon carbide film filtering device for clarifying desulfurization wastewater of thermal power plant |
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| CN (1) | CN214570924U (en) |
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2021
- 2021-04-08 CN CN202120712528.7U patent/CN214570924U/en active Active
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