CN213924384U - System for preparing demineralized water through high-efficiency treatment of mixed surface water - Google Patents

Abstract

The utility model relates to a petrochemical industry process water treatment field discloses a system for prepare demineralized water through high-efficient processing mixed surface water, including grid, delivery pump, pipeline, former water pitcher, charge device, tubular static mixer, sled dress formula module integration water purification pretreatment device, middle pond, remove ferro-manganese filter, the aqua storage tank, the heat exchanger, many medium filter, precision filter, ultrafiltration device, the water tank is produced in the ultrafiltration, one-level safety filter, one-level reverse osmosis unit, the decarbonizer, the water tank is produced in one-level reverse osmosis, second grade safety filter, second grade reverse osmosis unit, demineralized water product water tank, dense water retrieval and utilization device and row's muddy water retrieval and utilization device. The utility model discloses can prepare high-quality demineralized water, fully guarantee the good quality of water of process water, avoid the inferior water to the corruption of equipment, reduce cost of maintenance, resource consumption is few, and the working costs reduces, and protection groundwater has apparent economy, ecology and social.

Description

System for preparing demineralized water through high-efficiency treatment of mixed surface water

Technical Field

The utility model relates to a petrochemical industry process water treatment field, concretely relates to system for through high-efficient processing mixed surface water preparation demineralized water.

Background

According to the water control policy of ' priority for water saving, treatment of a space balance system and force generation by two hands ' in the ' water law of the people's republic of China ', on the basis of reasonable allocation of water resources, domestic water of urban and rural residents is preferentially guaranteed, and reasonable development, effective protection, scientific management and continuous utilization of underground water resources are realized. The deterioration of the surface water quality seriously affects the industrial water, which causes serious scaling and corrosion of the refining enterprise device, great influence on the safe operation of the production and immeasurable economic loss.

The current research shows that various preparation processes of the demineralized water can only meet the requirement of singly treating a certain water quality, but cannot comprehensively treat mixed surface water, and particularly, the selection of the pretreatment unit process at the early stage is particularly important for a mixed water source which has high conductivity and turbidity and contains more suspended matters, ferromanganese and silicon dioxide and is prepared from yellow river water and south water.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a system for preparing demineralized water by efficiently treating mixed surface water.

The technical scheme is as follows: the system comprises a grid, a delivery pump, a pipeline, a raw water tank, a dosing device, a tubular static mixer, a skid-mounted module integrated water purification pretreatment device, a middle water tank, a ferro-manganese removal filter, a water storage tank, a heat exchanger, a multi-media filter, a precision filter, an ultrafiltration device, an ultrafiltration water production tank, a primary security filter, a primary reverse osmosis device, a carbon remover, a primary reverse osmosis water production tank, a secondary security filter, a secondary reverse osmosis device, a desalted water production tank, a concentrated water recycling device and a sludge discharge water recycling device; the conveying pump lifts the raw water after suspended matters are intercepted by the grating to the raw water tank; the pipeline is connected with a raw water tank, a tubular static mixer communicated with a dosing device is installed on the pipeline, and then a skid-mounted module integrated water purification pretreatment device, a middle water tank, a ferro-manganese removal filter, a water storage tank, a heat exchanger, a multi-medium filter, a precision filter, an ultrafiltration device, an ultrafiltration water production tank, a primary security filter, a primary reverse osmosis device, a decarbonizer, a primary reverse osmosis water production tank, a secondary security filter, a secondary reverse osmosis device and a desalted water production tank are sequentially connected; the water inlet end of the concentrated water recycling device is connected with concentrated water discharge ports of the ultrafiltration device, the primary reverse osmosis device and the secondary reverse osmosis device, and the water outlet end of the concentrated water recycling device is connected with a circulating water pipeline; the muddy water inlet end of the muddy water discharging and recycling device is connected with the skid-mounted module integrated clean water pretreatment device and the muddy water discharge port of the raw water tank, and the water outlet end is connected with the water outlet pipeline of the raw water tank.

The above technical solution can be further optimized as follows:

and a perforated pipe aeration facility is arranged at the bottom of the raw water tank.

The tubular static mixer is connected with a dosing device through a coagulant pipeline and a disinfectant pipeline respectively.

The skid-mounted module integrated purified water pretreatment device is provided with a flocculation area, a sedimentation area and a filtration area.

The flocculation area is connected with a dosing device through a flocculating agent pipeline, and a stirrer is additionally arranged to promote the full mixing of the flocculating agent; the upper part of the settling zone is provided with an inclined pipe which forms a sixty-degree angle with the horizontal plane, and the bottom of the settling zone is provided with a sludge collecting groove; the filtering area adopts quartz sand filtering material.

The multi-media filter comprises a sand filtering layer and an activated carbon filtering layer.

The ultrafiltration membrane of the ultrafiltration device is made of polysulfone.

The multi-medium filter, the ultrafiltration device, the primary reverse osmosis device and the secondary reverse osmosis device are all provided with full-automatic back-flushing facilities.

The middle water tank adopts a semi-underground reinforced concrete water tank and is provided with primary ultraviolet sterilization and disinfection equipment; the water storage tank is provided with secondary ultraviolet sterilization and disinfection equipment.

The dosing device comprises a metering pump; the concentrated water recycling device comprises a reverse osmosis membrane; the mud water recycling device comprises a water drainage pool.

Compared with the prior art, the utility model discloses mainly have following beneficial technological effect:

1. the utility model discloses a high-efficient processing mixes surface water and prepares out high-quality demineralized water, fully guarantees the good quality of water of process water, avoids the corruption of inferior water to equipment, reduces cost of maintenance, ensures the long period running of equipment and membrane, has apparent economic benefits. After the mixed surface water is comprehensively treated by the utility model, the water quality is excellent, and the water quality requirement of the production water in petrochemical industry water supply and drainage water quality standard (SH 3099-2000) is completely met; after treatment, compared with before treatment, the turbidity is reduced by 99.2%, the removal rate of suspended matters is 99.85%, the removal rate of iron ions is 99.43%, and the removal rate of manganese ions is 99.39%.

2. Thoroughly getting rid of the dependence on underground water resources, being beneficial to carrying out powerful protection on the precious underground water resources and having remarkable ecological and social benefits.

3. Skid-mounted module integration water purification pretreatment device is through increaseing flocculation, fully settling and high efficiency filter and deviate from other organic impurity such as suspended solid, colloid steadily, and the effectual traditional coagulating basin, sedimentation tank and the filtering ponds of having replaced have overcome that area is big, the engineering time is long, investment cost is high defect.

4. The multi-medium filter, the ultrafiltration device and the reverse osmosis device all adopt a full-automatic back washing mode, the automation degree is higher, and the labor intensity and the labor cost of personnel are greatly reduced.

5. The middle water tank is provided with the primary ultraviolet sterilization and disinfection equipment, and the water storage tank is provided with the secondary ultraviolet sterilization and disinfection equipment, so that the using amount of the sterilization and disinfection agent is favorably and greatly reduced, the pollution and blockage phenomenon of the membrane at the later stage is effectively reduced, the backwashing frequency of the membrane is reduced, and the service life of the membrane is prolonged.

6. The arrangement of the heat exchanger can avoid the phenomenon that the water yield of membrane treatment is reduced due to the fact that the inlet water temperature is too low in winter.

7. The ultrafiltration membrane in the ultrafiltration device is made of polysulfone with good chemical stability, thermal stability and mechanical property, so that the interception effect on organic matters is remarkable, the cleaning frequency of the reverse osmosis membrane can be effectively reduced, the service cycle is greatly prolonged, and the service life of the membrane is greatly prolonged; the quality of the effluent water after ultrafiltration is very stable and is not influenced by the change of the quality of the raw water, and the method has the advantages of simple and stable operation and small occupied area of equipment.

8. The recycling of concentrated water and sludge water in the preparation process is emphasized, the utilization rate of water is improved, the raw water consumption is effectively saved, and more high-quality water is provided.

9. The material selection is exquisite, durable in use, easy to maintain.

10. Reasonable layout, simple and convenient operation and good popularization and application values.

Drawings

FIG. 1 is a schematic view of the basic structure layout and process flow of the present invention;

in the figure: 1-grating, 2-delivery pump, 3-perforated pipe aeration facility, 4-raw water tank, 5-pipeline, 6-coagulant pipeline, 7-disinfectant pipeline, 8-tubular static mixer, 9-dosing device, 10-flocculant pipeline, 11-stirrer, 12-flocculation zone, 13-sedimentation zone, 14-skid-mounted module integrated water purification pretreatment device, 15-inclined pipe, 16-sludge collection tank, 17-filtration zone, 18-intermediate water tank, 19-iron and manganese removal filter, 20-water storage tank, 21-heat exchanger, 22-multi-medium filter, 23-precision filter, 24-ultrafiltration device, 25-ultrafiltration water production tank, 26-primary security filter, 27-primary reverse osmosis device, 28-a carbon remover, 29-a first-stage reverse osmosis water production tank, 30-a second-stage cartridge filter, 31-a second-stage reverse osmosis device, 32-a desalted water production tank, 33-a concentrated water recycling device and 34-a sludge water recycling device.

Detailed Description

The present invention will be described in detail with reference to the following embodiments and accompanying drawings.

Example 1

See fig. 1. A system for preparing demineralized water by efficiently treating mixed surface water comprises a grating 1, a delivery pump 2, a pipeline 5, a raw water tank 4, a dosing device 9, a tubular static mixer 8, a skid-mounted module integrated water purification pretreatment device 14, an intermediate water tank 18, a ferro-manganese removal filter 19, a water storage tank 20, a heat exchanger 21, a multi-media filter 22, a precision filter 23, an ultrafiltration device 24, an ultrafiltration product water tank 25, a primary security filter 26, a primary reverse osmosis device 27, a decarbonizer 28, a primary reverse osmosis product water tank 29, a secondary security filter 30, a secondary reverse osmosis device 31, a desalted product water tank 32, a concentrated water reuse device 33 and a sludge water reuse device 34. The conveying pump 2 lifts the raw water after the suspended matters are intercepted by the grating 1 to the raw water tank 4. The pipeline 5 is connected with the raw water tank 4 firstly, the tubular static mixer 8 communicated with the dosing device 9 is installed on the pipeline, and then the skid-mounted module integrated water purification pretreatment device 14, the intermediate water tank 18, the iron and manganese removal filter 19, the water storage tank 20, the heat exchanger 21, the multi-media filter 22, the precision filter 23, the ultrafiltration device 24, the ultrafiltration water production tank 25, the primary security filter 26, the primary reverse osmosis device 27, the decarbonizer 28, the primary reverse osmosis water production tank 29, the secondary security filter 30, the secondary reverse osmosis device 31 and the desalted water production tank 32 are sequentially connected. The water inlet end of the concentrated water recycling device 33 is connected with concentrated water outlets of the ultrafiltration device 24, the first-stage reverse osmosis device 27 and the second-stage reverse osmosis device 31, and the water outlet end is connected with a circulating water pipeline. The water inlet end of the sludge water recycling device 34 is connected with the skid-mounted module integrated purified water pretreatment device 14 and the sludge water outlet of the raw water tank 4, and the water outlet end is connected with the water outlet pipeline of the raw water tank 4.

Example 2

See fig. 1. A system for preparing desalted water by efficiently treating mixed surface water is characterized in that on the basis of the technical scheme recorded in embodiment 1, a perforated pipe aeration facility 3 is arranged at the bottom of a raw water tank 4; the tubular static mixer 8 is connected with a dosing device 9 through a coagulant pipeline 6 and a disinfectant pipeline 7 respectively.

Example 3

See fig. 1. A system for preparing demineralized water by efficiently treating mixed surface water is characterized in that on the basis of the technical scheme recorded in embodiment 1, a skid-mounted module integrated purified water pretreatment device 14 is provided with a flocculation zone 12, a precipitation zone 13 and a filtration zone 17. The flocculation area 12 is connected with a dosing device 9 through a flocculating agent pipeline 10, and a stirrer 11 is additionally arranged to promote the full mixing of flocculating agents. An inclined pipe 15 for sedimentation is arranged at the upper part of the sedimentation zone 13, and the inclined pipe 15 forms a sixty-degree angle with the horizontal plane; the bottom of the settling zone is provided with a sludge collecting groove 16. The filtering area adopts quartz sand filtering material.

Example 4

See fig. 1. A system for preparing demineralized water by efficiently treating mixed surface water is disclosed, wherein on the basis of the technical scheme recorded in embodiment 1, a multi-media filter 22 comprises a sand filter layer and an activated carbon filter layer; the ultrafiltration membrane of the ultrafiltration device is made of polysulfone with good chemical stability, thermal stability and mechanical property; the multi-media filter 22, the ultrafiltration device 24, the primary reverse osmosis device 27 and the secondary reverse osmosis device 31 are all provided with full-automatic back flushing facilities.

Example 5

See fig. 1. A system for preparing desalted water by efficiently treating mixed surface water is characterized in that a semi-underground reinforced concrete water tank is adopted as an intermediate water tank 18 and is provided with primary ultraviolet sterilization equipment on the basis of the technical scheme recorded in embodiment 1. The water storage tank 20 is provided with secondary ultraviolet sterilization and disinfection equipment. The dosing device 9 comprises a metering pump. The concentrated water reusing device 33 includes a reverse osmosis membrane. The sludge water reusing device 34 includes a drainage tank.

The utility model discloses a basic work flow as follows:

raw water consisting of mixed surface water is introduced from a reserved connector of a municipal raw water pipe network, surface suspended matters are intercepted through a grid 1, and the raw water is conveyed into a raw water tank 4 with the bottom for removing iron by air explosion through a conveying pump 2. The outlet water of the raw water tank 4 is conveyed by a pipeline 5, a coagulant and a disinfectant are sequentially added into a tubular static mixer 8 through a dosing device 9 and are uniformly mixed, then enters a skid-mounted module integrated water purification pretreatment device 14 provided with a flocculation area 12, a sedimentation area 13 and a filtering area 17 along with the normal flow rate for treatment, and the outlet water automatically flows to an intermediate water tank 18 provided with a primary ultraviolet sterilization disinfection device and the disinfectant. The effluent from the intermediate water tank 18 enters an iron and manganese removing filter 19, and the produced water enters a water storage tank 20 provided with secondary ultraviolet sterilization and disinfection equipment. The effluent of the water storage tank 20 enters a heat exchanger 21, the temperature of the water is adjusted to be 25-40 ℃, then the effluent enters a multi-media filter 22 containing a sand filter layer and an active carbon filter layer, suspended matters and organic impurities are removed for the second time, the effluent enters a precision filter 23, the turbidity of the water is effectively reduced, and the effluent enters an ultrafiltration device 24 and then enters an ultrafiltration water production tank 25. The water tank 25 is produced in the ultrafiltration and the effluent enters the first-level security filter 26 for careful filtration and then enters the first-level reverse osmosis device 27 for first-level reverse osmosis filtration, the produced water enters the first-level reverse osmosis water tank 29, the effluent passes through the second-level security filter 30 for second-level fine filtration, and then enters the second-level reverse osmosis device 31 for second-level reverse osmosis filtration, and the obtained high-quality desalted water enters the desalted water tank 32 and is supplied to each boiler. Concentrated water generated by the ultrafiltration device 24, the primary reverse osmosis device 27 and the secondary reverse osmosis device 31 is treated by a concentrated water reuse device 33 and then is used as circulating water for supplementing water. The sludge water of the flocculation area 12 and the sedimentation area 13 of the skid-mounted module integrated water purification pretreatment device 14, the back flush water of the filtering area 17 and the sludge water of the raw water tank 4 are collected and treated by the sludge water reuse device 34, and the treated supernatant flows back to the water outlet pipeline of the raw water tank 4 for repeated reuse, so that the raw water cost is reduced.

The experimental research and the production practice fully prove that the utility model discloses have outstanding application effect. A mixed water source formed by mixing yellow river water and south-to-north water according to a ratio of 1:1 is taken as a treatment object, and water quality before and after treatment is summarized in Table 1.

TABLE 1 Water quality comparison Table before and after treatment of mixed surface water

As shown in Table 1, after the mixed surface water is comprehensively treated by the utility model, the water quality is excellent, and the water quality requirement of the production water in petrochemical industry water supply and drainage water quality standard (SH 3099-2000) is completely met. Through calculation, compared with the turbidity before treatment, the turbidity after treatment is reduced by 99.2%, the removal rate of suspended matters is 99.85%, the removal rate of iron ions is 99.43%, and the removal rate of manganese ions is 99.39%.

Claims (10)

1. A system for preparing desalted water by efficiently treating mixed surface water is characterized by comprising a grid, a delivery pump, a pipeline, a raw water tank, a dosing device, a tubular static mixer, a skid-mounted module integrated water purification pretreatment device, a middle water tank, a ferro-manganese removal filter, a water storage tank, a heat exchanger, a multi-medium filter, a precision filter, an ultrafiltration device, an ultrafiltration water production tank, a primary security filter, a primary reverse osmosis device, a decarbonizer, a primary reverse osmosis water production tank, a secondary security filter, a secondary reverse osmosis device, a desalted water production tank, a concentrated water recycling device and a sludge discharge water recycling device; the conveying pump lifts the raw water after suspended matters are intercepted by the grating to the raw water tank; the pipeline is connected with a raw water tank, a tubular static mixer communicated with a dosing device is installed on the pipeline, and then a skid-mounted module integrated water purification pretreatment device, a middle water tank, a ferro-manganese removal filter, a water storage tank, a heat exchanger, a multi-medium filter, a precision filter, an ultrafiltration device, an ultrafiltration water production tank, a primary security filter, a primary reverse osmosis device, a decarbonizer, a primary reverse osmosis water production tank, a secondary security filter, a secondary reverse osmosis device and a desalted water production tank are sequentially connected; the water inlet end of the concentrated water recycling device is connected with concentrated water discharge ports of the ultrafiltration device, the primary reverse osmosis device and the secondary reverse osmosis device, and the water outlet end of the concentrated water recycling device is connected with a circulating water pipeline; the muddy water inlet end of the muddy water discharging and recycling device is connected with the skid-mounted module integrated clean water pretreatment device and the muddy water discharge port of the raw water tank, and the water outlet end is connected with the water outlet pipeline of the raw water tank.

2. The system for preparing desalted water through efficient treatment of mixed surface water as claimed in claim 1, wherein said raw water tank is provided with perforated pipe aeration facility at bottom.

3. The system for preparing desalinated water by efficiently treating and mixing surface water according to claim 1, wherein the tubular static mixer is connected to a dosing device through a coagulant line and a disinfectant line, respectively.

4. The system for preparing desalted water through efficient treatment of mixed surface water according to claim 1, wherein said skid-mounted module integrated clean water pretreatment device is provided with a flocculation zone, a sedimentation zone and a filtration zone.

5. The system for preparing desalted water through efficient treatment of mixed surface water according to claim 4, wherein said flocculation zone is connected with a dosing device through a flocculant pipeline, and a stirrer is added to promote sufficient mixing of flocculant; the upper part of the settling zone is provided with an inclined pipe which forms a sixty-degree angle with the horizontal plane, and the bottom of the settling zone is provided with a sludge collecting groove; the filtering area adopts quartz sand filtering material.

6. The system for preparing desalinated water through efficient treatment of mixed surface water according to claim 1, wherein the multi-media filter includes a sand filter layer and an activated carbon filter layer.

7. The system for preparing desalted water through efficient treatment of mixed surface water according to claim 1, wherein the ultrafiltration membrane of said ultrafiltration device is made of polysulfone material.

8. The system for preparing desalinated water through high-efficiency treatment of mixed surface water according to claim 1, wherein the multi-media filter, the ultrafiltration device, the primary reverse osmosis device and the secondary reverse osmosis device are equipped with a fully automatic backwashing means.

9. The system for preparing desalinated water by efficiently treating mixed surface water according to claim 1, wherein the intermediate reservoir is a semi-underground reinforced concrete reservoir and is provided with a primary ultraviolet sterilization and disinfection device; the water storage tank is provided with secondary ultraviolet sterilization and disinfection equipment.

10. The system for preparing desalinated water through efficient processing of mixed surface water according to claim 1, wherein said dosing device comprises a metering pump; the concentrated water recycling device comprises a reverse osmosis membrane; the mud water recycling device comprises a water drainage pool.

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