CN216106362U - Cooling water circulation system of recycling - Google Patents
Cooling water circulation system of recycling Download PDFInfo
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- CN216106362U CN216106362U CN202122119788.6U CN202122119788U CN216106362U CN 216106362 U CN216106362 U CN 216106362U CN 202122119788 U CN202122119788 U CN 202122119788U CN 216106362 U CN216106362 U CN 216106362U
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Abstract
A cooling water circulation and reuse system comprises a circulation passage consisting of a concentrated water recycling device and a cooling water circulation device; the concentrated water recycling device comprises a concentrated water recycling water tank, a concentrated water booster pump, a concentrated water reverse osmosis high-pressure pump, a concentrated water reverse osmosis unit, a pH on-line monitoring unit, a first conductivity on-line monitoring unit and a residual chlorine on-line monitoring unit; the cooling water circulating device comprises a cooling water tank, a cooling water pump, a cooling water treatment unit, a second conductivity online monitoring unit, a turbidity online monitoring unit, a chloride ion online monitoring unit, a COD online monitoring unit and a cooling tower unit. The utility model effectively improves the water quality condition of the cooling water system, enables the water quality of the cooling water recycling system to meet the relevant standards, saves energy, reduces consumption and improves economic benefits.
Description
Technical Field
The utility model belongs to the technical field of concentrated water recycling and reusing, and particularly relates to a cooling water recycling system.
Background
Cooling water systems are common equipment in factories and are used for cooling production equipment, so that the equipment can be put into the next stage of production more quickly. After the production equipment is cooled by the cooling water system, in order to save water resources, a circulating system is matched with the cooling water system to ensure that the heated cold water flows through the cooling equipment, and the water is pumped back to the production equipment for reuse after the water temperature is lowered, wherein the system is called as a cooling water circulating system. The cooling water circulation system can greatly reduce the consumption of cold water, and plays a role in saving a large amount of industrial water.
In the existing industrial cooling water circulation system, most of the systems adopt treated reclaimed water or tap water as a supplementary water source of a cooling water system for use. In order to further save water sources, reverse osmosis concentrated water can be treated and supplemented into a cooling water system for use, and the conventional reverse osmosis concentrated water recycling device is improved, so that not only is the water resources reasonably utilized, but also the water quality condition of the cooling water system is more effectively improved, the corrosion of stainless steel heat exchange equipment caused by high chloride ions in reclaimed water or tap water is greatly relieved, the service life of the equipment is prolonged, and the water quality of the cooling water recycling system is in line with and better than the relevant standards in GB 50050 and 2007 industrial circulating cooling water treatment design specifications.
SUMMERY OF THE UTILITY MODEL
The present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a cooling water recycling system.
The technical scheme adopted by the utility model for solving the problem is as follows:
a cooling water circulation and reuse system comprises a circulation passage consisting of a concentrated water recycling device and a cooling water circulation device;
the concentrated water recycling device comprises a concentrated water recycling water tank, a concentrated water booster pump, a concentrated water reverse osmosis high-pressure pump, a concentrated water reverse osmosis unit, a pH online monitoring unit, a first conductivity online monitoring unit and a residual chlorine online monitoring unit which are sequentially connected through a reverse osmosis concentrated water drainage pipeline;
the cooling water circulating device comprises a cooling water tank, a cooling water pump, a cooling water treatment unit, a second conductivity online monitoring unit, a turbidity online monitoring unit, a chloride ion online monitoring unit, a COD online monitoring unit and a cooling tower unit which are sequentially connected through a reverse osmosis concentrated water discharge pipeline;
the output end of the residual chlorine on-line monitoring unit is connected with the input end of the cooling water tank through the reverse osmosis concentrated water drainage pipeline;
and the output end of the cooling tower unit is connected with the input end of the cooling water tank through the reverse osmosis concentrated water drainage pipeline.
Preferably, the circulation passage further comprises a filtering device, and the filtering device comprises a tap water tank, a reverse osmosis high-pressure pump and a reverse osmosis unit which are sequentially connected through the reverse osmosis concentrated water drainage pipeline;
the output end of the reverse osmosis unit is connected with the input end of the concentrated water recovery water tank through the reverse osmosis concentrated water drainage pipeline.
Preferably, the cooling water circulating device further comprises a cooling water monitoring unit, wherein the input end of the cooling water monitoring unit is connected with the reverse osmosis concentrated water drainage pipeline and the output end of the cooling water tank, and the output end of the cooling water monitoring unit is connected with the input end of the cooling water treatment unit through the reverse osmosis concentrated water drainage pipeline.
Further preferably, the cooling water monitoring unit comprises a Y-filter, a mechanical pressure gauge and a pressure sensor.
Further preferably, the cooling water treatment unit is a sterilization kettle or a blending tank, or a combination of the two.
Preferably, a second security filter is arranged between the concentrated water booster pump and the concentrated water reverse osmosis high-pressure pump, and a first scale inhibitor dosing unit and a pH adjusting unit are arranged between the second security filter and the concentrated water booster pump.
Preferably, a sand filtration water supply pump, a sand filtration device and a first safety filter are further sequentially arranged between the tap water tank and the reverse osmosis high-pressure pump, and a second scale inhibitor dosing unit is arranged between the first safety filter and the reverse osmosis high-pressure pump.
Preferably, the concentrated water recycling device further comprises a sodium hypochlorite dosing unit, and the sodium hypochlorite dosing unit is connected with the input end of the residual chlorine on-line monitoring unit through the reverse osmosis concentrated water drainage pipeline.
Preferably, the cooling water tank further comprises a bottom access hole, and the bottom access hole is connected with an access valve.
Further preferably, the cooling water tank further comprises a bottom sewage draining outlet, and the bottom sewage draining outlet is connected with a sewage draining valve.
The beneficial effects of the utility model are as follows:
the utility model utilizes the concentrated water recycling device and the cooling water circulating device to form a circulating passage, and the high-salinity wastewater discharged by the reverse osmosis system is recycled and used as a cooling water source, so that the reverse osmosis concentrated water can be utilized to the maximum extent, the problems of water resource waste caused by direct discharge of the concentrated water and environmental pollution caused by the high-salinity wastewater are solved, the water resource is fully utilized, the water is saved, and the discharge is reduced. And the water quality condition of the cooling water system is more effectively improved, the corrosion condition of stainless steel heat exchange equipment caused by high chloride ions is greatly relieved, the water quality of the cooling water recycling system meets and is superior to the relevant standard in the GB 50050 plus 2007 industrial circulating cooling water treatment design specification, and the cooling water recycling system has obvious effects on energy conservation and consumption reduction of a factory, environmental protection and economic benefit improvement.
Drawings
The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for illustrative purposes only and thus do not limit the scope of the present invention. Furthermore, unless otherwise indicated, the drawings are intended to be illustrative of the structural configurations described herein and are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of the connection of the devices of the present invention.
Detailed Description
First, it should be noted that the specific structures, features, advantages, etc. of the present invention will be specifically described below by way of example, but all the descriptions are for illustrative purposes only and should not be construed as limiting the present invention in any way. Furthermore, any single feature described or implicit in any embodiment or any single feature shown or implicit in any drawing may still be combined or subtracted between any of the features (or equivalents thereof) to obtain still further embodiments of the utility model that may not be directly mentioned herein. In addition, for the sake of simplicity, the same or similar features may be indicated in only one place in the same drawing.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the term "connected" may refer to a direct connection, an indirect connection through an intermediate, a connection between two elements or an interaction relationship between two elements, and unless otherwise specifically defined, the term should be understood as having a specific meaning in the present application by those skilled in the art.
The present invention will be described in detail with reference to FIG. 1.
Example 1:
a cooling water circulation and reuse system comprises a circulation passage consisting of a concentrated water recycling device and a cooling water circulation device;
the concentrated water recycling device comprises a concentrated water recycling water tank, a concentrated water booster pump, a concentrated water reverse osmosis high-pressure pump, a concentrated water reverse osmosis unit, a pH online monitoring unit, a first conductivity online monitoring unit and a residual chlorine online monitoring unit which are sequentially connected through a reverse osmosis concentrated water drainage pipeline;
the cooling water circulating device comprises a cooling water tank, a cooling water pump, a cooling water treatment unit, a second conductivity online monitoring unit, a turbidity online monitoring unit, a chloride ion online monitoring unit, a COD online monitoring unit and a cooling tower unit which are sequentially connected through a reverse osmosis concentrated water discharge pipeline;
the output end of the residual chlorine on-line monitoring unit is connected with the input end of the cooling water tank through the reverse osmosis concentrated water drainage pipeline;
and the output end of the cooling tower unit is connected with the input end of the cooling water tank through the reverse osmosis concentrated water drainage pipeline.
The working principle is as follows:
in the technical scheme, as shown in fig. 1, the produced concentrated water enters the cooling water circulating device through the concentrated water recycling device, so that the cooling water is recycled.
Meanwhile, the cooling water circulating device can be directly connected with tap water to serve as a supplementary water source.
The produced concentrated water is firstly discharged to a concentrated water recovery water tank, and after the liquid level in the concentrated water recovery water tank rises, the concentrated water is pressurized through a concentrated water booster pump and a concentrated water reverse osmosis high-pressure pump in sequence, and the concentrated water is discharged to a concentrated water reverse osmosis unit through a reverse osmosis concentrated water discharge pipeline. The concentrated water reverse osmosis unit sequentially sends the produced concentrated water to the pH on-line monitoring unit, the first conductivity on-line monitoring unit, the residual chlorine on-line monitoring unit and finally the cooling water tank.
When the pH value of the concentrated water monitored by the pH on-line monitoring unit is between 7.5 and 8.5, the conductivity of the concentrated water monitored by the conductivity on-line monitoring unit is less than or equal to 300 mu s/cm, and the chlorine residual water monitored by the chlorine residual on-line monitoring unit is required to be more than 0 and less than 0.1ppm, discharging the concentrated water into a cooling water tank;
otherwise, if any one of the monitoring values of the pH value, the conductivity and the residual chlorine does not meet the condition, the concentrated water is recovered again and further filtered until the concentrated water meets the condition, and the concentrated water can enter the cooling water tank to perform the next cooling water circulation link.
Wherein, the pH on-line monitoring unit is used for monitoring the pH value of the concentrated water. The standard qualified range of the pH is 7.5-8.5, if the standard qualified range exceeds the standard, the system gives an alarm, and after the alarm, the alkali adding amount is adjusted until the pH value of the concentrated water is within the standard qualified range, so that the next link can be entered. The addition of alkali is carried out in concentrated water, here a 5% NaOH solution, in order to remove CO2 contained in the water body. Theoretically, when the pH =8.3, the conductivity of reverse osmosis produced water reaches the lowest value, and the pH standard of the reverse osmosis inlet water of the concentrated water controlled by the system is 7.5-8.5.
The first conductivity online monitoring unit is used for monitoring the salt content in the discharged concentrated water, the conductivity is in direct proportion to the salt content, the salt content is low, and the conductivity is low, so that the water quality of the concentrated water can be further filtered.
The residual chlorine on-line monitoring unit is used for monitoring the chlorine content of the concentrated water, the residual chlorine is used for inhibiting the breeding of microorganisms in the water, the residual chlorine inflow requirement of the reverse osmosis membrane is less than 0.1ppm, the residual chlorine control standard is greater than 0 and less than 0.1ppm, if the residual chlorine inflow requirement exceeds the standard, the system is adjusted and recovers the concentrated water after alarming, sodium hypochlorite is added into the concentrated water through the sodium hypochlorite unit, and the concentrated water enters the next link after reaching the qualified range.
When any one of the monitoring values of the pH value, the conductivity and the residual chlorine does not meet the conditions, the concentrated water is recovered again, enters the concentrated water recovery water tank through the reverse osmosis concentrated water drainage pipeline, is subjected to new circulation and treatment, and enters the cooling water tank after meeting the conditions.
And water in the cooling water tank is sent into the cooling water treatment unit through a cooling water pump, is neutralized by the cooling water treatment unit, then sequentially passes through the second conductivity online monitoring unit, the turbidity online monitoring unit, the chloride ion online monitoring unit, the COD online monitoring unit and the cooling tower unit, and finally returns to the cooling water tank to complete the whole self-circulation process.
When the second conductivity standard of the cooling water is less than or equal to 1000 mu s/cm, the cooling water circulating device is in a self-circulation state, and the cooling water is directly discharged to a sewage treatment system when the second conductivity standard exceeds the standard.
When the turbidity standard is less than or equal to 5NTU, the cooling water circulating device is in a self-circulation state, and if the turbidity standard exceeds the standard, the cooling water circulating device is directly discharged.
When the standard of chloride ions is less than or equal to 250mg/L, the cooling water circulating device is in a self-circulation state, and if the standard exceeds the standard, the cooling water is directly discharged.
When the CODcr standard is less than or equal to 30mg/L, the cooling water circulating device is in a self-circulation state, and if the CODcr standard exceeds the standard, the cooling water is directly discharged.
Further, in an embodiment, the circulation path further comprises a filtering device, and the filtering device comprises a tap water tank, a reverse osmosis high-pressure pump and a reverse osmosis unit which are sequentially connected through the reverse osmosis concentrated water discharge pipeline; the output end of the reverse osmosis unit is connected with the input end of the concentrated water recovery water tank through the reverse osmosis concentrated water drainage pipeline.
In this embodiment, the cooling water recycling system is further expanded, and is connected to the filtering device, so that after the tap water enters the tap water tank, the tap water is subjected to reverse osmosis filtration by the filtering device, and then the generated concentrated water is directly discharged to the concentrated water recovery tank, passes through the concentrated water recycling device, and finally enters the cooling water tank.
Further, in an embodiment, the cooling water circulation device further includes a cooling water monitoring unit, an input end of the cooling water monitoring unit is connected to an output end of the cooling water tank through the reverse osmosis concentrated water discharge pipeline, and an output end of the cooling water monitoring unit is connected to an input end of the cooling water treatment unit through the reverse osmosis concentrated water discharge pipeline.
The real-time state of the cooling water is processed and monitored by the cooling water monitoring unit, so that system parameters can be adjusted better according to various numerical values, and better utilization is realized.
Still further, it is also contemplated in an embodiment that the cooling water monitoring unit includes a Y-filter, a mechanical pressure gauge, and a pressure sensor. Wherein: the Y-shaped filter is used for filtering suspended impurities in the water body, such as leaves, plastic bags and the like blown in by wind of the cooling tower; the mechanical pressure gauge is used for visually monitoring the operation pressure of the cooling water pump, so that a patrol inspector can observe whether the water pump operates normally; the pressure sensor is used for transmitting the operating pressure data of the water pump to the upper computer for displaying in real time, so that an operator on duty can conveniently monitor the operating pressure data.
Still further, it is also contemplated in embodiments that the cooling water treatment unit is a sterilization kettle or a blending tank, or a combination of both. After the cooling water pump outputs water, the water can be sterilized separately through the sterilization kettle according to the water quality condition, or the prepared medicament is added into the water through the preparation tank, so that the water meets the water quality standard, or the sterilization kettle and the preparation tank are used simultaneously, and finally the water quality meets the standard.
Further, in an embodiment, a second security filter is arranged between the concentrated water booster pump and the concentrated water reverse osmosis high-pressure pump, and a first scale inhibitor dosing unit and a pH adjusting unit are arranged between the second security filter and the concentrated water booster pump.
The concentrated water generated in the concentrated water booster pump is purified by the second cartridge filter, the first scale inhibitor dosing unit and the pH adjusting unit are connected with the output end of the concentrated water booster pump, after the scale inhibitor is added into the concentrated water, the solution has 3% concentration, the standard of the adding concentration of the scale inhibitor is 3-6ppm, and the concentrated water is simultaneously matched with the pH adjusting unit for use and is sent to the concentrated water reverse osmosis high-pressure pump. The mode can prevent the reverse osmosis membrane surface from scaling, improve the water yield and the quality of the produced water, reduce the system operation cost and prolong the service life of the reverse osmosis membrane of the concentrated water reverse osmosis high-pressure pump.
Further, in an embodiment, a sand filtration water supply pump, a sand filtration device and a first safety filter are sequentially arranged between the tap water tank and the reverse osmosis high-pressure pump, and a second scale inhibitor dosing unit is arranged between the first safety filter and the reverse osmosis high-pressure pump. Through sand filtration feed water pump and sand filter device, effectively detach aquatic suspended solid, organic matter, colloidal particle etc. reduce water turbidity, rethread first cartridge filter further gets rid of microorganism, chlorine, smells flavor and partial heavy metal ion, finally makes quality of water reach reverse osmosis membrane's requirement of intaking. Meanwhile, the water filtered by the first safety filter is added with the scale inhibitor through the second scale inhibitor dosing unit and then enters the reverse osmosis high-pressure pump, so that the scale formation of a reverse osmosis membrane surface can be prevented, and the water yield and the quality are improved.
Further, still can consider in the embodiment, the device is recycled to dense water still includes sodium hypochlorite medicine unit, sodium hypochlorite medicine unit passes through reverse osmosis dense water drainage pipe with the input of chlorine residue on-line monitoring unit is connected. And adding sodium hypochlorite into the produced concentrated water, carrying out oxidation treatment, providing an alkaline environment for the concentrated water, and adjusting the pH value of the concentrated water so as to reach the monitoring standard of the pH online monitoring unit on the concentrated water.
In the embodiment, the concentrated water recycling part of the cooling water recycling system accounts for 70% of the concentrated water directly discharged, and the energy-saving potential is great. After the sodium hypochlorite dosing unit and the pH adjusting unit are added for treatment, the treatment can completely reach and exceed the relevant standards in GB 50050 and 2007 industrial circulating cooling water treatment design specifications. Has practical prospect.
Further, it is also contemplated in an embodiment that the cooling water tank further comprises a bottom access opening, and the bottom access opening is connected with an access valve. When the cooling water tank goes wrong, the maintenance valve can be closed, and the cooling water tank can be repaired or replaced.
Still further, it is also contemplated in an embodiment that the cooling water tank further comprises a bottom drain outlet, and the bottom drain outlet is connected to a drain valve. When the water quality does not meet the standard, the water is directly discharged through a sewage discharge outlet.
Furthermore, in an embodiment, it is also conceivable that the input end of the cooling water tank is directly connected to tap water. Besides the treated concentrated water is used for cooling, tap water can also be directly used for cooling, and the combination of the two has higher use efficiency.
Further, it is also considered in the embodiment that the concentrated water recovery tank further comprises a bottom access opening, and the bottom access opening is connected with an access valve. When the concentrated water recovery tank goes wrong, the maintenance valve can be closed, and the concentrated water recovery tank is repaired or replaced.
Further, in an embodiment, the first scale inhibitor dosing unit or the second scale inhibitor dosing unit further comprises a scale inhibitor metering tank, and the scale inhibitor metering tank is connected with a scale inhibitor metering pump. The scale inhibitor metering box is used for throwing a set amount of scale inhibitor, and the scale inhibitor metering pump can throw the scale inhibitor into water at set time according to actual conditions.
Further, it is also considered in an embodiment that the pH adjusting unit further includes an alkali metering tank, and the alkali metering tank is connected to the alkali metering pump. The alkali metering tank is used for throwing the alkaline chemical agent of setting for the volume, and the alkaline chemical agent can be regularly put into to the aquatic to the alkali metering pump according to actual conditions.
Further, still can consider in the embodiment, sodium hypochlorite medicine adding unit still includes the sodium hypochlorite batch meter, the sodium hypochlorite batch meter is connected the sodium hypochlorite measuring pump. The sodium hypochlorite metering box is used for throwing into the sodium hypochlorite medicament of setting for a certain amount, and the sodium hypochlorite medicament can be regularly put into to the aquatic according to actual conditions to the sodium hypochlorite metering pump.
In conclusion, the utility model provides an energy-saving and environment-friendly cooling water recycling system.
The present invention has been described in detail with reference to the above examples, but the description is only for the preferred examples of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (10)
1. A cooling water circulation system of recycling which characterized in that: comprises a circulating passage consisting of a concentrated water recycling device and a cooling water circulating device;
the concentrated water recycling device comprises a concentrated water recycling water tank, a concentrated water booster pump, a concentrated water reverse osmosis high-pressure pump, a concentrated water reverse osmosis unit, a pH online monitoring unit, a first conductivity online monitoring unit and a residual chlorine online monitoring unit which are sequentially connected through a reverse osmosis concentrated water drainage pipeline;
the cooling water circulating device comprises a cooling water tank, a cooling water pump, a cooling water treatment unit, a second conductivity online monitoring unit, a turbidity online monitoring unit, a chloride ion online monitoring unit, a COD online monitoring unit and a cooling tower unit which are sequentially connected through a reverse osmosis concentrated water discharge pipeline;
the output end of the residual chlorine on-line monitoring unit is connected with the input end of the cooling water tank through the reverse osmosis concentrated water drainage pipeline;
and the output end of the cooling tower unit is connected with the input end of the cooling water tank through the reverse osmosis concentrated water drainage pipeline.
2. The cooling water recycling system according to claim 1, wherein: the circulation passage also comprises a filtering device;
the filter device comprises a tap water tank, a reverse osmosis high-pressure pump and a reverse osmosis unit which are sequentially connected through the reverse osmosis concentrated water drainage pipeline;
the output end of the reverse osmosis unit is connected with the input end of the concentrated water recovery water tank through the reverse osmosis concentrated water drainage pipeline.
3. The cooling water recycling system according to claim 1, wherein: the cooling water circulating device further comprises a cooling water monitoring unit, wherein the input end of the cooling water monitoring unit is connected with the reverse osmosis concentrated water drainage pipeline and the output end of the cooling water tank, and the output end of the cooling water monitoring unit is connected with the input end of the cooling water treatment unit through the reverse osmosis concentrated water drainage pipeline.
4. The cooling water recycling system according to claim 3, wherein: the cooling water monitoring unit comprises a Y-shaped filter, a mechanical pressure gauge and a pressure sensor.
5. The cooling water recycling system according to claim 1, wherein: the cooling water treatment unit is a sterilization kettle or a blending tank or a combination of the two.
6. The cooling water recycling system according to claim 1, wherein: and a second security filter is arranged between the concentrated water booster pump and the concentrated water reverse osmosis high-pressure pump, and a first scale inhibitor dosing unit and a pH adjusting unit are arranged between the second security filter and the concentrated water booster pump.
7. The cooling water recycling system according to claim 2, wherein: still be equipped with sand filtration water supply pump, sand filtration device, first safety filter in proper order between running water tank and the reverse osmosis high-pressure pump, first safety filter with be equipped with second antisludging agent medicine unit between the reverse osmosis high-pressure pump.
8. The cooling water recycling system according to claim 1, wherein: the concentrated water recycling device further comprises a sodium hypochlorite dosing unit, and the sodium hypochlorite dosing unit passes through the reverse osmosis concentrated water drainage pipeline and the input end of the residual chlorine on-line monitoring unit.
9. The cooling water recycling system according to claim 1, wherein: the cooling water tank further comprises a bottom access hole, and the bottom access hole is connected with an access valve.
10. The cooling water recycling system according to claim 9, wherein: the cooling water tank further comprises a bottom sewage draining outlet, and the bottom sewage draining outlet is connected with a sewage draining valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122119788.6U CN216106362U (en) | 2021-09-03 | 2021-09-03 | Cooling water circulation system of recycling |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122119788.6U CN216106362U (en) | 2021-09-03 | 2021-09-03 | Cooling water circulation system of recycling |
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| CN216106362U true CN216106362U (en) | 2022-03-22 |
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