CN212833197U - A function reinforcement type multipurpose integration water treatment facilities for thermal power plant - Google Patents

Abstract

A function-enhanced multipurpose integrated water treatment device for a thermal power plant comprises an enhanced coagulation area; wherein, one side of the reinforced coagulation area is provided with a water distribution area, one side of each water distribution area is provided with a clarification area, each clarification area comprises a clear water area, a sedimentation area and a concentration area which are sequentially communicated from top to bottom, one side of the clear water area is provided with a filtering area, the filtering area is communicated with the clear water area, and a comet filtering chamber is arranged below the filtering area; the reinforced coagulation area is communicated with the water distribution area, the water distribution area is communicated with the clarification area, and the clear water area is communicated with the filtering area. The reinforced coagulation area is internally provided with a reinforced circulating flow guide device which is internally provided with a mechanical reinforced stirring device. The reinforced coagulation area completes two reaction processes of coagulation and flocculation in one equipment unit, and the waste water of the power plant is treated by fully utilizing the mechanical reinforced coagulation principle, the shallow pool sedimentation principle and the gravity filtration principle, so that the process flow is greatly shortened, and the occupied land is saved.

Description

A function reinforcement type multipurpose integration water treatment facilities for thermal power plant

Technical Field

The utility model belongs to the technical field of thermal power plant's water treatment, concretely relates to type multipurpose integration water treatment facilities is reinforceed to function for thermal power plant.

Background

The normal production process of the thermal power plant generally needs to relate to a raw water pretreatment system, a sewage and wastewater treatment system, a circulating sewage and wastewater treatment system and the like. The raw water pretreatment system has the main functions of removing raw water hardness or suspended matters, the sewage and wastewater treatment system has the main functions of reducing suspended matters and the like which do not meet the environmental protection requirement indexes, and the circulating sewage treatment system has the main functions of reducing temporary hardness, permanent hardness, COD (chemical oxygen demand), suspended matters and the like of circulating sewage and meets the water inlet conditions of a subsequent sewage recycling system. The common processes of the treatment system comprise conventional coagulation, lime coagulation, double-alkali coagulation softening, clarification, medium filtration and the like, and equipment which is commonly used for the processes comprises a mechanical accelerated clarification tank, a high-density sedimentation tank, an inclined tube clarification tank, a double-medium filter, a gravity filter and the like.

The water treatment system of the thermal power plant has various processes, long flow, various treatment equipment, large floor area and complex maintenance work. In addition, lime coagulation requires accurate control of lime addition amount and also ensures good floc growth and separation effect, and a conventional mechanical accelerated clarification tank cannot meet the use requirement; the sludge-water separation effect of the conventional inclined-tube clarification tank in sewage and wastewater treatment is poor; the circulating sewage contains a scale inhibition and dispersion agent, the flocculation effect is poor, the conventional system and equipment can not reach the designed water quality and water quantity, and the subsequent recycling system is frequently polluted and blocked and can not work normally.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of above-mentioned prior art or equipment, the utility model aims at providing a function reinforcement type multipurpose integration water treatment facilities for thermal power plant, the device will coagulate highly concentrated with technologies such as, clarification, filtration, has shortened process flow greatly for conventional processing technology, sparingly takes up an area of. Meanwhile, the device performs function enhancement improvement on each process section aiming at the drainage water quality characteristic for a thermal power plant, can be widely applied to systems of raw water pretreatment, sewage and wastewater treatment, circulating sewage and sewage treatment and the like, can adapt to the change of inflow water quality load, and is quick, flexible and convenient to start. Various raw water or waste water can meet relevant standards after being treated, and the method has good environmental benefit and economic benefit.

In order to achieve the above object, the utility model adopts the following technical scheme:

a function-enhanced multipurpose integrated water treatment device for a thermal power plant comprises an enhanced coagulation area, a water distribution area, a clarification area, a filtering area and a comet filtering chamber; wherein, one side of the reinforced coagulation area is provided with a water distribution area, one side of each water distribution area is provided with a clarification area, each clarification area comprises a clear water area, a sedimentation area and a concentration area which are sequentially communicated from top to bottom, one side of the clear water area is provided with a filtering area, the filtering area is communicated with the clear water area, and a comet filtering chamber is arranged below the filtering area; the reinforced coagulation area is communicated with the water distribution area, the water distribution area is communicated with the clarification area, and the clear water area is communicated with the filtering area; the reinforced coagulation area is internally provided with a reinforced circulating flow guide device which is internally provided with a mechanical reinforced stirring device.

The utility model has the further improvement that the bottom of the reinforced coagulation area is communicated with the bottom of the water distribution area through a communicating pipe; the lower part of the reinforced circulating flow guide device is in a bell mouth shape.

The utility model discloses further improvement lies in, is provided with between V type distributing flume and the comet filter chamber and blocks the board.

The utility model discloses a further improvement lies in, is provided with a plurality of long handle filter heads in the comet filter chamber.

The utility model discloses further improvement lies in, and the concentration region bottom is provided with mud scraping device, and mud scraping device below is provided with the bagger.

The utility model discloses a further improvement lies in, is provided with the overflow weir between water distribution district and the clarification district.

The utility model discloses further improvement lies in, is provided with V type distributing flume in the filtering area, and V type distributing flume below is provided with comet filter chamber.

The utility model discloses further improvement lies in, a plurality of apertures have been seted up to V type distributing tray bottom.

The utility model is further improved in that a plurality of inclined pipes are arranged between the clarification area and the clear water area; the cross section of the inclined tube is hexagonal.

The utility model discloses a further improvement lies in, and it is provided with the water distribution district to reinforce the district opposite side symmetry of congealing.

Compared with the prior art, the utility model discloses following beneficial effect has:

1) the utility model provides a to coagulate, integrated water treatment facilities that technology height concentrates such as clarification, filtration through be provided with in the district of coagulating with reinforceing the circulation guiding device, is provided with mechanical intensive agitating unit in the intensive circulation guiding device, and the come water is thrown and is added the mixed action that leans on agitating unit after the medicament and accomplish the quick reaction of mud sediment, medicament, raw water, leans on agitating unit's promotion effect to strengthen the flocculation system at the large-traffic machinery of formation. The reinforced coagulation area completes two reaction processes of coagulation and flocculation in one equipment unit, and fully utilizes a mechanical reinforced coagulation principle, a shallow pool sedimentation principle and a gravity filtration principle to treat the wastewater of the power plant;

2) the utility model can be widely applied to the systems of thermal power plant such as raw water pretreatment, sewage treatment, circulating water sewage treatment and the like, and various raw water or wastewater can meet the relevant standards after being treated;

3) the device can realize full-automatic stable operation, the working conditions of coagulation, flocculation, sludge discharge, backwashing and the like are convenient to control, and the operation maintenance amount is less;

4) the device has simple pool shape and convenient construction, and the optimization of the coagulation-clarification-filtration combined process saves the occupied area and is suitable for new construction and reconstruction projects.

Further, the utility model discloses well reinforce and congeal district both sides symmetry and be provided with the water distribution district, the device contains parallel two simultaneously and is listed as equipment, but the free operation also can move simultaneously, and the operation flexibility ratio is high.

Furthermore, the sedimentation zone adopts a reverse flow inclined tube sedimentation mode by arranging an inclined tube, and simultaneously utilizes the space to realize multilayering, adopts a small-interval inclined tube sedimentation technology, increases the sedimentation operation area and reduces the sedimentation distance. Because the inclined tube spacing is small and is 25mm, the pulsating interference in alum floc sedimentation is inhibited, and the sedimentation distance is small, alum floc can be quickly sedimentated, the water flow resistance is large, the flow distribution in the sedimentation tank is uniform, and the leakage of partial alum floc is avoided.

Furthermore, the section of the inclined tube is designed to be hexagonal, so that a larger effective sedimentation area is obtained. The sedimentation area is equal to the sludge discharge area, the sedimentation sludge discharge load is greatly improved, sludge discharge is facilitated, the surface load of the sedimentation tank can reach 15-25m/h, and the turbidity can be stably kept below 3NTU after sedimentation.

Furthermore, a small hole is arranged at the bottom of the V-shaped water distribution tank, and water to be filtered enters the filter tank through the water distribution holes and the V-shaped groove weir which are uniform at the bottom of the tank respectively, so that the uniform water distribution is ensured.

Drawings

FIG. 1 is a plan view of a function-enhanced multipurpose integrated water treatment device.

FIG. 2 is a vertical view of the function-enhanced multipurpose integrated water treatment device.

In the figure, 1-reinforced coagulation zone; 2-mechanically strengthening the stirring device; 3-strengthening the circulating flow guide device; 4-water distribution area; 5-a clarification zone; 6-sludge concentration zone; 7-a precipitation zone; 8-a mud scraping device; 9-a mud bucket; 10-clear water area; 11-a filtration zone; 12-V type water distribution tank; 13-a multifunctional interception plate; 14-comet filtration chamber; 15-long handle filter head.

Detailed Description

The present invention will be described in further detail with reference to examples.

Referring to fig. 1 and 2, a function-enhanced multipurpose integrated water treatment device for a thermal power plant mainly comprises an enhanced coagulation area 1, a mechanical enhanced stirring device 2, an enhanced circulation flow guide device 3, a water distribution area 4, a clarification area 5, a sludge concentration area 6, a settling area 7, a sludge scraping device 8, a sludge hopper 9, a clear water area 10, a filtering area 11, a V-shaped water distribution tank 12, a multifunctional interception plate 13, a comet filtration chamber 14 and a long-handle filter head 15. Wherein, the two sides of the reinforced coagulation area 1 are symmetrically provided with water distribution areas 4, or the water distribution areas 4 are symmetrically arranged on one side of the reinforced coagulation area 1. The bottom of the reinforced coagulation area 1 is communicated with the bottom of the water distribution area 4 through a communicating pipe, a clarification area 5 is arranged on one side of each water distribution area 4, an overflow weir is arranged between each water distribution area 4 and the clarification area 5, each clarification area 5 comprises a clear water area 10, a settling area 7 and a concentration area 6 which are sequentially arranged from top to bottom, a filtering area 11 is arranged on one side of each clear water area 10, the filtering area 11 is communicated with the clear water area 10, a V-shaped water distribution groove 12 is arranged in each filtering area 11, a comet filtering chamber 14 is arranged below the V-shaped water distribution groove 12, and a blocking plate 13 is arranged between the V-shaped water distribution groove 12 and the comet filtering chamber 14. A plurality of long-handle filter heads 15 are arranged in the comet filter chamber 14.

The bottom of the concentration area 6 is provided with a mud scraping device 8, and a mud bucket 9 is arranged below the mud scraping device 8.

The utility model discloses a working process does: the water enters the lower part of the reinforced coagulation area 1 firstly, is stirred by the mechanical reinforced stirring device 2, reacts with the added coagulant, coagulant aid and sodium carbonate, and simultaneously carries out large-flow self-circulation reinforced coagulation inside and outside the reinforced circulation flow guide device 3 to generate large-particle alum flocs. Alum floc enters a water distribution area 4 from the lower part of a strengthening coagulation area 1 through a communicating pipe, then enters a clarification area 5 through an overflow weir, large-particle floc sinks to a sludge concentration area 6, and clear water enters a clear water area 10 through a sedimentation area 7. Sludge at the bottom of the sludge concentration area 6 is concentrated for a certain time and then scraped to a sludge hopper 9 through a sludge scraping device 8, and then discharged through a sludge discharge pump matched with the system. A plurality of inclined pipes which are obliquely arranged are arranged between the settling zone 7 and the clarifying zone 5, and the distance between every two adjacent inclined pipes is 25 mm.

Clear water in the clear water area 10 enters a V-shaped water distribution tank 12 of a filtering area 11 through a water distribution pipe for uniform water distribution, then enters a comet filtering chamber 14 through a multifunctional interception plate 13, and filtered water filtered by comet filtering materials flows into the bottom space through a long-handle filtering head 15 to be collected and finally discharged through a water outlet pipe.

After the device operates for a certain time, the filtering resistance of the comet filtering chamber 14 is increased, the liquid level is raised, when the set backwashing time is reached, the filtering area 11 enters a backwashing program, at the moment, the system starts a matched backwashing water pump to backwash the comet filtering chamber 14, backwashing wastewater discharge equipment is used, and the backwashing is automatically switched to the filtering program after the backwashing is finished.

The function-enhanced multipurpose integrated water treatment device of the thermal power plant fully utilizes a mechanical enhanced coagulation principle, a shallow pool sedimentation principle and a gravity filtration principle, optimizes and combines three processes of mechanical mixed enhanced coagulation, efficient inclined tube sedimentation separation and asymmetric fractal structure filtration separation, and enhances various functions, thereby obtaining excellent performances which cannot be compared with the conventional technology.

The water quantity of the circulating water and sewage of a certain plant is about 2 multiplied by 100t/h, and the main water quality indexes are shown in a table 1:

TABLE 1 main water quality index of circulating water and sewage from a certain plant

The circulating water sewage disposal system adopts the utility model discloses-function strengthening type multipurpose integration water treatment facilities, the device is 18.8 meters long, 4 meters wide, high 6.5 meters, and wherein strengthen coagulating zone 1 length and width height and be 1.6m 4m 5.5m, strengthen circulation guiding device 3 diameter

The height is 3.3m, the length, width and height of the water distribution area 4 are 0.5m multiplied by 4m multiplied by 5.5m, the length, width and height of the sludge concentration area 6 are 4m multiplied by 2m, the length, width and height of the sedimentation area 7 are 4m multiplied by 2.3m, the length, width and height of the clear water area 10 are 4m multiplied by 0.7m, the length, width and height of the filtering area 11 are 4m multiplied by 1.6m multiplied by 2.9m, the height of the comet fiber filtering material is 0.5m, and the height of the cobblestone cushion layer is 0.15 m.

Sodium hydroxide and a coagulant are added to a water inlet main pipe of the circulating sewage, the circulating sewage and the chemical are mixed and then firstly enter the lower part of the reinforced coagulation area 1, and are stirred by a mechanical reinforced stirring device 2 to react with the coagulant aid added in the reinforced circulating diversion device 3 and the sodium carbonate added in the reinforced coagulation area 1, and simultaneously, large-flow self-circulating reinforced coagulation is carried out inside and outside the reinforced circulating diversion device 3 to generate large-particle alum flocs. The alum blossom enters a water distribution area 4 from the lower part of a strengthening coagulation area 1 through a communicating pipe, then enters a clarification area 5 through an overflow weir, large-particle flocs sink to a sludge concentration area 6, and supernatant enters a clear water area 10 through a precipitation area 7. Sludge at the bottom of the sludge concentration zone 6 is concentrated for a certain time and then scraped to a sludge hopper 9 through a sludge scraping device 8, then a part of sludge is returned to the reinforced coagulation zone 1 through a sludge pump matched with the system, and the residual sludge is discharged. Clear water in the clear water area 10 is added with sulfuric acid to adjust the pH value, enters the V-shaped water distribution tank 12 of the filtering area 11 through the water distribution pipe to be uniformly distributed, enters the comet filtering chamber 14 through the multifunctional interception plate 13, is filtered by the comet filtering material, flows into the bottom space through the long handle filtering head 15 to be collected and finally is discharged through the water outlet pipe. Backwashing of the filtration zone 11 is automatically backwashed for about 5 minutes according to a set time (24 hours).

The water quality index of the effluent treated by the function-enhanced multipurpose integrated water treatment device is shown in table 2.

TABLE 2 Main Water quality index of the effluent of the system

The utility model has the characteristics of as follows:

1. the device can rapidly and efficiently treat various water sources of a thermal power plant, and adopts an open, stable and orderly direct connection mode to be tightly connected without pipe channel connection among the processes of coagulation, clarification and filtration, thereby being beneficial to the improvement and control of water flow conditions.

2. The utility model discloses well reinforce and congeal district both sides symmetry and be provided with the water distribution district, the device contain parallel two simultaneously and are listed as equipment, but the free operation also can move simultaneously, and the operation flexibility ratio is high.

3. The reinforced coagulation area completes two reaction processes of coagulation and flocculation in one equipment unit. The reinforced coagulation area is provided with a flow guide device with 7 times of circulating flow and a bell mouth-shaped lower part, and a mechanical reinforced stirring device is arranged in the flow guide device. After the incoming water is added with the medicament, the rapid reaction of the sludge, the medicament and the raw water is completed by the mixing action of the stirring device, and a large-flow mechanical reinforced flocculation system is formed by the lifting action of the stirring device.

4. The mechanical reinforced stirring device can be controlled in a variable speed according to the water quality and water quantity of the incoming water, and can promote the enlargement of alum flocs to ensure that the alum flocs are uniform and dense.

5. Mud in the sludge concentration district is scraped the sludge bucket through scraping the mud device, and rethread sludge reflux pump frequency conversion control draws the backward flow to strengthening and thoughtlessly congeals the district, can make the suspension solid concentration who strengthens in thoughtlessly the district maintain at the optimum level, thoughtlessly congeals the district at the enhancement and forms the suspension mud sediment of high density, increases granule collision chance, pollutants such as effective adsorbed colloid, suspended solid, COD play the effect of strengthening the primary treatment, save the medicament and throw the dosage.

6. The sedimentation zone adopts a reverse flow inclined tube sedimentation mode, simultaneously utilizes space to realize multilayering, adopts a small-interval inclined tube sedimentation technology, increases the sedimentation operation area and reduces the sedimentation distance. Because the distance (25mm) between the inclined pipes is small, the pulsating interference in the precipitation of the alum flocs is inhibited, and the precipitation distance is small, the alum flocs can be rapidly precipitated, the water flow resistance is large, the flow distribution in the precipitation tank is uniform, and the leakage of local alum flocs is avoided.

7. The cross section of the inclined tube is designed into a hexagon, so that a larger effective sedimentation area is obtained. The sedimentation area is equal to the sludge discharge area, the sedimentation sludge discharge load is greatly improved, sludge discharge is facilitated, the surface load of the sedimentation tank can reach 15-25m/h, and the turbidity can be stably kept below 3NTU after sedimentation.

8. The effluent of the clean water area is distributed by a water distribution pipe and then respectively enters a V-shaped water distribution tank submerged by water to be filtered, a small hole is formed in the bottom of the V-shaped water distribution tank, the water to be filtered respectively enters a filter tank through a water distribution hole and a V-shaped groove weir which are uniform in the bottom of the tank, and the uniform water distribution is ensured.

9. The filtering area adopts the self-adaptive comet type fiber filtering material, combines the characteristic of good dirt intercepting performance of the fiber filtering material with the characteristic of good back flushing effect of the particle filtering material, ensures the porosity uniformity of the cross section of the filtering bed and the reasonable gradient of the vertical section with sparse upper part and dense lower part, ensures the simultaneous realization of high-speed filtering and high-precision filtering, and simultaneously forms an ideal filtering layer structure with sparse upper part and dense lower part in a self-adaptive manner. The upper part of the filtering layer is mainly used for adsorption, the lower part of the filtering layer is mainly used for filtration, and a filter cake is formed at the lower part of the filtering layer.

10. The filter material can be fully dispersed during backwashing, and the filter has the characteristic of layered backwashing, and the backwashing cleanliness is high and the water consumption is low.

11. The V-shaped water distribution tank keeps water inlet while backwashing, and air-water backwashing and the existing transverse surface sweeping are always carried out, so that the washing effect is good, and the washing water quantity is greatly reduced.

12. The function-enhanced multipurpose integrated water treatment device of the thermal power plant has the advantages of automatic control of all regions, stable operation and short starting time.

13. Because the coagulation, flocculation, sedimentation and filtration areas are highly concentrated, the arrangement is compact, and the occupied area of the device is small; the rectangular structure is adopted, the pool shape is simplified, the construction is convenient, and the rectangular water treatment device is particularly suitable for the transformation of various water treatment systems of old and old power plants.

Claims (10)

1. A function-enhanced multipurpose integrated water treatment device for a thermal power plant is characterized by comprising an enhanced coagulation area (1), a water distribution area (4), a clarification area (5), a filtering area (11) and a comet filtering chamber (14); wherein, one side of the reinforced coagulation area (1) is provided with a water distribution area (4), one side of each water distribution area (4) is provided with a clarification area (5), each clarification area (5) comprises a clear water area (10), a settling area (7) and a concentration area (6) which are sequentially communicated from top to bottom, one side of each clear water area (10) is provided with a filtering area (11), the filtering area (11) is communicated with the clear water area (10), and a comet filtration chamber (14) is arranged below the filtering area (11); the reinforced coagulation area (1) is communicated with the water distribution area (4), the water distribution area (4) is communicated with the clarification area (5), and the clear water area (10) is communicated with the filtering area (11); a reinforced circulating diversion device (3) is arranged in the reinforced coagulation area (1), and a mechanical reinforced stirring device (2) is arranged in the reinforced circulating diversion device (3).

2. The function-enhanced multipurpose integrated water treatment device for the thermal power plant as claimed in claim 1, wherein the bottom of the enhanced coagulation area (1) is communicated with the bottom of the water distribution area (4) through a communicating pipe; the lower part of the reinforced circulating flow guide device is in a bell mouth shape.

3. The function-intensified multipurpose integrated water treatment device for thermal power plant as claimed in claim 1, characterized in that a interception plate (13) is provided between the V-shaped distribution tank (12) and the comet filtration chamber (14).

4. The function-intensified multipurpose integrated water treatment device for thermal power plant as claimed in claim 1, wherein a plurality of long-handled filter heads (15) are provided in the comet filter chamber (14).

5. The function-enhanced multipurpose integrated water treatment device for the thermal power plant as recited in claim 1, characterized in that a mud scraping device (8) is arranged at the bottom of the concentration area (6), and a mud bucket (9) is arranged below the mud scraping device (8).

6. The function-enhanced multipurpose integrated water treatment device for the thermal power plant as recited in claim 1, characterized in that an overflow weir is arranged between the water distribution area (4) and the clarification area (5).

7. The function-enhanced multipurpose integrated water treatment device for the thermal power plant as recited in claim 1, wherein a V-shaped water distribution tank (12) is provided in the filtering area (11), and a comet filtering chamber (14) is provided below the V-shaped water distribution tank (12).

8. The function-enhanced multipurpose integrated water treatment device for the thermal power plant as claimed in claim 1, wherein a plurality of small holes are formed at the bottom of the V-shaped water distribution tank (12).

9. The function-enhanced multipurpose integrated water treatment device for the thermal power plant as claimed in claim 1, wherein a plurality of inclined pipes are arranged between the clarification area (5) and the clear water area (10); the cross section of the inclined tube is hexagonal.

10. The function-enhanced multipurpose integrated water treatment device for the thermal power plant as claimed in claim 1, wherein the other side of the enhanced coagulation area (1) is symmetrically provided with a water distribution area (4).

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