CN220364447U - Device for recycling regenerated wastewater of primary desalting system in segmented mode - Google Patents
Device for recycling regenerated wastewater of primary desalting system in segmented mode Download PDFInfo
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- CN220364447U CN220364447U CN202321277409.9U CN202321277409U CN220364447U CN 220364447 U CN220364447 U CN 220364447U CN 202321277409 U CN202321277409 U CN 202321277409U CN 220364447 U CN220364447 U CN 220364447U
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- 239000002351 wastewater Substances 0.000 title claims abstract description 55
- 238000011033 desalting Methods 0.000 title claims abstract description 13
- 238000004064 recycling Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 323
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 180
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 82
- 238000005406 washing Methods 0.000 claims abstract description 57
- 238000011001 backwashing Methods 0.000 claims abstract description 52
- 150000001768 cations Chemical class 0.000 claims abstract description 48
- 230000008929 regeneration Effects 0.000 claims abstract description 21
- 238000011069 regeneration method Methods 0.000 claims abstract description 21
- 150000001450 anions Chemical class 0.000 claims abstract description 20
- 239000011347 resin Substances 0.000 claims abstract description 14
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 238000009849 vacuum degassing Methods 0.000 claims abstract description 11
- 239000003513 alkali Substances 0.000 claims description 35
- 239000002253 acid Substances 0.000 claims description 33
- 239000007788 liquid Substances 0.000 claims description 20
- 238000007872 degassing Methods 0.000 claims description 10
- 238000010612 desalination reaction Methods 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 10
- 239000002699 waste material Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 238000005352 clarification Methods 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims 8
- 238000011010 flushing procedure Methods 0.000 description 16
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000002585 base Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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- Water Treatment By Sorption (AREA)
Abstract
The utility model relates to a device for recycling regenerated wastewater of a primary desalting system in a sectional manner, which comprises an active carbon filter, a positive bed, a vacuum degassing tower and a negative bed which are sequentially connected in series through pipelines; the active carbon filter, the positive bed and the negative bed are respectively provided with a positive washing pipeline system for positive washing; a backwashing pipeline system for backwashing the activated carbon filter, the positive bed and the negative bed is respectively arranged on the activated carbon filter and the positive bed; the cation bed and the anion bed are respectively provided with a resin regeneration pipeline system; the discharge end of the backwashing pipeline system of the activated carbon filter is connected with the clarifier; the discharge ends of the backwashing pipeline systems of the positive bed and the negative bed are connected with a clean water tank; the backwashing pipeline systems of the activated carbon filter, the positive bed and the negative bed are respectively provided with a turbidity meter for detecting the turbidity of the backwashing water discharged by the activated carbon filter, the positive bed and the negative bed; and PH meters for detecting the PH value of the discharged normal washing water are arranged on the normal washing pipeline systems of the positive bed and the negative bed.
Description
Technical Field
The utility model relates to a device for recycling regenerated wastewater of a primary desalting system in a sectional manner, and belongs to the technical field of boiler makeup water preparation.
Background
The water source of a certain power plant is river water, and the boiler makeup water treatment system comprises the following process flows: river water sequentially passes through a mechanical acceleration clarification tank, a sand filter, a first-stage reverse osmosis, an activated carbon filter, a positive bed, a vacuum degassing tower, a negative bed, a mixed bed, a desalting water tank and other devices to prepare water, a first-stage desalting system is generally formed by combining the active carbon filter, the positive bed, the vacuum degassing tower, the negative bed and other devices to desalt the water, and the positive resin in the positive bed and the negative resin in the negative bed are regenerated through acid and alkali, so that the requirements of desalting and water preparation are met. The acid-base regeneration needs to be subjected to the steps of small backwashing, regeneration liquid feeding, forward washing, circulating forward washing and the like, so that a large amount of wastewater is often generated; and simultaneously, before the primary desalting system is put into operation, the activated carbon filter needs to be backwashed, and a large amount of water is consumed.
The Chinese patent with the bulletin number of CN206108984U discloses a classifying, collecting and recycling system for wastewater from boiler makeup water desalination treatment, which comprises a positive bed, a negative bed and a mixed bed, wherein the positive bed, the negative bed and the mixed bed are respectively provided with a water inlet and a water outlet, the water outlet of the positive bed is connected with the water inlet of the negative bed, and the water outlet of the negative bed is connected with the water inlet of the mixed bed; a water return pipeline from the female bed to the male bed is connected between a water outlet of the female bed and a water inlet of the male bed, and a first control valve is arranged in the water return pipeline from the female bed to the male bed; a mixed-bed-to-cation-bed water return pipeline is connected between the water outlet of the mixed bed and the water inlet of the cation bed, and a second control valve is arranged in the mixed-bed-to-cation-bed water return pipeline, so that the flushing water of the equipment can be directly recycled, the discharge of waste water is reduced, and the recycling rate is improved.
When the equipment is backwashed, the equipment such as an activated carbon filter, a positive bed, a negative bed and the like is usually preset through a PLC control system, and the backwashed time is controlled; when the pollution degree of the resin is higher, the resin cannot be backwashed cleanly according to the set value, and the regeneration effect of the resin can be influenced.
Disclosure of Invention
In order to overcome the problems, the utility model provides a device for recycling the regenerated wastewater of a primary desalting system in a sectional manner, which can be used for classifying and recycling the wastewater with different pollution degrees generated in the regeneration stage for reuse, and adjusting the backwashing time of equipment such as a positive bed, a negative bed and the like according to the pollution degree of resin so as to reduce water consumption.
The technical scheme of the utility model is as follows:
a device for recycling regenerated wastewater of a primary desalting system in a sectional manner comprises an active carbon filter, a positive bed, a vacuum degassing tower and a negative bed which are sequentially connected in series through pipelines; the active carbon filter, the positive bed and the negative bed are respectively provided with a positive washing pipeline system for positive washing; a backwashing pipeline system for backwashing the activated carbon filter, the positive bed and the negative bed is respectively arranged on the activated carbon filter and the positive bed; the cation bed and the anion bed are respectively provided with a resin regeneration pipeline system; the discharge end of the backwashing pipeline system of the activated carbon filter is connected with the clarifier; the discharge ends of the backwashing pipeline systems of the positive bed and the negative bed are connected with a clean water tank; the backwashing pipeline systems of the activated carbon filter, the positive bed and the negative bed are respectively provided with a turbidity meter for detecting the turbidity of the backwashing water discharged by the activated carbon filter, the positive bed and the negative bed; PH meters for detecting the PH value of the discharged normal washing water are arranged on the normal washing pipeline systems of the positive bed and the negative bed; each PH is connected with the clean water tank through a clean water pipe and the wastewater tank through a wastewater pipe respectively.
Further, the positive washing pipeline system of the activated carbon filter comprises a carbon filter water inlet pipe arranged at the upper part of the activated carbon filter and a carbon filter water outlet pipe arranged at the lower part of the activated carbon filter; the back washing pipeline system of the activated carbon filter comprises a carbon filter back washing water inlet branch pipe and a carbon filter back discharge pipe; the two ends of the carbon filter backwashing water inlet branch pipe are respectively connected with the carbon filter water inlet pipe and the carbon filter water outlet pipe; two ends of the carbon filter reverse discharge pipe are respectively connected with the carbon filter water inlet pipe and the clarifier; the carbon filter reverse drainage pipe is arranged between the carbon filter backwashing water inlet branch pipe and the activated carbon filter.
Further, the positive washing pipeline system of the cation bed comprises a cation bed water inlet pipe arranged at the upper part of the cation bed and a cation bed water outlet pipe arranged at the lower part of the cation bed, and the cation bed water inlet pipe is connected with the carbon filter water outlet pipe; the backwashing pipeline system of the positive bed comprises a positive bed backwashing water inlet pipe and a positive bed reverse discharge pipe; the two ends of the positive bed backwashing water inlet pipe are respectively connected with the water outlet pipe of the carbon filter and the water outlet pipe of the positive bed; and two ends of the cation bed reverse calandria are respectively connected with the cation bed water inlet pipe and the clean water tank.
Further, the upper part of the vacuum degassing tower is provided with a degassing tower water inlet pipe, and the lower part of the vacuum degassing tower is provided with a degassing tower water outlet pipe; the water inlet pipe of the degassing tower is connected with the water outlet pipe of the cation bed.
Further, a female bed water inlet pipe is arranged at the upper part of the female bed, and a female bed water outlet pipe is arranged at the lower part of the female bed; the negative bed water inlet pipe is connected with the degassing tower water outlet pipe; the lower water inlet branch pipe is provided with a positive washing water inlet pipe of the negative bed, and the discharge end of the positive washing water inlet pipe of the negative bed is connected with the water inlet pipe of the negative bed; the positive washing pipeline system of the negative bed comprises a positive washing water inlet pipe of the negative bed and a water outlet pipe of the negative bed; the back washing pipeline system of the negative bed comprises a lower water inlet branch pipe and a negative bed back discharge pipe, and two ends of the negative bed back discharge pipe are respectively connected with the negative bed water inlet pipe and the clean water tank.
Further, a clean water pipe connected with each PH meter is connected with a clean water inlet pipe of the clean water tank, and a clean water outlet pipe of the clean water tank is connected with a water inlet pipe of the carbon filter; the discharge end of the clear water outlet pipe is arranged at one side of the carbon filter reverse discharge pipe, which is far away from the activated carbon filter; the waste water pipe connected with each PH meter is connected with a waste water inlet pipe of the waste water tank; and the clear water pipe and the waste water pipe which are connected with the same PH meter are arranged in parallel.
Further, the lower part of the cation bed is also provided with an acid inlet pipe for acid liquor to enter, and the middle part of the cation bed is provided with an acid discharge pipe; the lower part of the negative bed is also provided with an alkali inlet pipe for alkali liquor to enter, and the middle part of the negative bed is provided with an alkali discharge pipe; the other ends of the acid discharging pipe and the alkali discharging pipe are connected with the wastewater inlet pipe; and metering pumps for extracting the solution are arranged on the acid inlet pipe and the alkali inlet pipe.
Further, the two ends of the carbon filter backwash water inlet branch pipe, the two ends of the positive bed backwash water inlet pipe, the two ends of the negative bed forward washing water inlet pipe, the two ends of the negative bed reverse discharge pipe, and the carbon filter water inlet pipe, the carbon filter water outlet pipe, the positive bed water inlet pipe, the positive bed water outlet pipe, the negative bed water inlet pipe, the negative bed water outlet pipe and the lower water inlet branch pipe are all provided with a valve for guiding the flow direction of liquid, and the valve is opened or closed by the control of the PLC controller so as to guide the flow direction of the liquid flowing through the valve.
Further, the acid inlet pipe, the alkali inlet pipe, the acid discharge pipe, the alkali discharge pipe, each clear water pipe and each waste water pipe are respectively provided with a second valve for guiding the flow direction of liquid, and the second valves are opened or closed by the PLC controller to guide the flow direction of the liquid flowing through the second valves.
The utility model has the following beneficial effects:
1. according to the utility model, the turbidity meters are respectively arranged on the carbon filter back-flushing pipe, the positive bed back-flushing pipe and the negative bed back-flushing pipe, the turbidity of the activated carbon filter, the positive bed back-flushing water and the negative bed back-flushing water is detected, the back-flushing time of each device is controlled by utilizing the PLC controller when the turbidity of the back-flushing water flowing through the device is detected to be lower, the back-flushing of the device can be finished in advance even if the back-flushing time is smaller than a set value, when the turbidity is higher, the back-flushing time of the device is prolonged until the turbidity reaches the requirement, and the back-flushing is finished, so that the adjusting water in the small back-flushing step is realized, the back-flushing effect is improved, and meanwhile, the waste of water resources is prevented.
2. The utility model discharges the carbon filter backwash water with better backwash water quality into the clarifier through the carbon filter backwash pipe so as to recycle water, and the backwash water is re-thrown into the water treatment system through the clarifier, thereby saving the river water consumption as raw water; through the PH meter of setting on positive bed outlet pipe, yin bed outlet pipe to the pH valve of the just washing water of monitoring positive bed, yin bed, when the pH valve is higher, will be equipped with just washing water and be discharged into the wastewater disposal basin, when the pH valve reduces, will just washing water and be discharged into the clean water basin through the switching valve of PLC controller, make positive bed, the whole clean water basin of discharging into of the backwash water of yin bed simultaneously, avoid all being discharged into the wastewater disposal basin with just washing water, the backwash water of each equipment in the regeneration process, reduced the water yield that needs carry out waste water neutralization treatment in the wastewater disposal basin, practice thrift processing cost greatly.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
The reference numerals in the drawings are as follows:
1. an activated carbon filter; 11. a carbon filter inlet pipe; 12. a carbon filter counter-drain; 13. a carbon filter water outlet pipe; 14. backwashing the water inlet pipe by the positive bed; 15. backwashing the water inlet branch pipe by the carbon filter; 2. a male bed; 21. a male bed water inlet pipe; 22. a male bed reverse drain pipe; 23. a male bed water outlet pipe; 24. an acid inlet pipe; 25. an acid discharge pipe; 3. a vacuum degassing tower; 31. a water inlet pipe of the degassing tower; 32. a water outlet pipe of the degassing tower; 4. a bed of yin type; 41. a female bed water inlet pipe; 42. a negative bed reverse drain pipe; 43. a female bed water outlet pipe; 44. an alkali inlet pipe; 45. an alkali discharging pipe; 46. a lower water inlet branch pipe; 47. a water inlet pipe is positively washed by the negative bed; 5. a clarification tank; 6. a clean water tank; 61. a clean water inlet pipe; 611. a clear water pipe; 62. a clear water outlet pipe; 7. a wastewater tank; 71. a wastewater inlet pipe; 711. a waste pipe; 8. a turbidity meter; 9. a PH meter; 10. a metering pump; 101. a valve I; 101', valve number two.
Detailed Description
The utility model will now be described in detail with reference to the drawings and to specific embodiments.
Referring to fig. 1, a device for recycling regenerated wastewater of a primary desalting system in a sectional manner comprises an activated carbon filter 1, a positive bed 2, a vacuum degassing tower 3 and a negative bed 4 which are sequentially connected in series through pipelines; the active carbon filter 1, the positive bed 2 and the negative bed 4 are respectively provided with a positive washing pipeline system for positive washing; a backwashing pipeline system for backwashing the activated carbon filter 1, the positive bed 2 and the negative bed 4 is respectively arranged on the activated carbon filter; resin regeneration pipeline systems are respectively arranged on the positive bed 2 and the negative bed 4; the discharge end of the backwashing pipeline system of the activated carbon filter 1 is connected with a clarifier 5; the discharge ends of the backwashing pipeline systems of the positive bed 2 and the negative bed 4 are connected with a clean water tank 6; the backwashing pipeline systems of the activated carbon filter 1, the positive bed 2 and the negative bed 4 are respectively provided with a turbidity meter 8 for detecting the turbidity of the backwashing water discharged by the activated carbon filter; PH meters 9 for detecting the PH value of the discharged normal washing water are arranged on the normal washing pipeline systems of the positive bed 2 and the negative bed 4; each PH meter 9 is connected with the clean water tank 6 through a clean water pipe 611 and connected with the wastewater tank 7 through a wastewater pipe 711.
Further, the positive washing pipeline system of the activated carbon filter 1 comprises a carbon filter water inlet pipe 11 arranged at the upper part of the activated carbon filter 1 and a carbon filter water outlet pipe 13 arranged at the lower part of the activated carbon filter 1; the back washing pipeline system of the activated carbon filter 1 comprises a carbon filter back washing water inlet branch pipe 15 and a carbon filter back discharge pipe 12; two ends of the carbon filter backwashing water inlet branch pipe 15 are respectively connected with the carbon filter water inlet pipe 11 and the carbon filter water outlet pipe 13; both ends of the carbon filter reverse drain pipe 12 are respectively connected with the carbon filter water inlet pipe 11 and the clarifier 5; the carbon filter back-flushing pipe 12 is arranged between the carbon filter back-flushing water inlet branch pipe 15 and the activated carbon filter 1.
Further, the positive washing pipeline system of the cation bed 2 comprises a cation bed water inlet pipe 21 arranged at the upper part of the cation bed 2 and a cation bed water outlet pipe 23 arranged at the lower part of the cation bed 2, wherein the cation bed water inlet pipe 21 is connected with the carbon filter water outlet pipe 13; the backwashing pipeline system of the positive bed 2 comprises a positive bed backwashing water inlet pipe 14 and a positive bed reverse drain pipe 22; the two ends of the positive bed backwashing water inlet pipe 14 are respectively connected with the carbon filter water outlet pipe 13 and the positive bed water outlet pipe 23; the two ends of the positive bed reverse drain pipe 22 are respectively connected with the positive bed water inlet pipe 21 and the clean water tank 6.
Further, a degasser water inlet pipe 31 is arranged at the upper part of the vacuum degasser 3, and a degasser water outlet pipe 32 is arranged at the lower part of the vacuum degasser 3; the degasser inlet pipe 31 is connected to the cation bed outlet pipe 23.
Further, a female bed water inlet pipe 41 is arranged at the upper part of the female bed 4, and a female bed water outlet pipe 43 is arranged at the lower part of the female bed; the female bed water inlet pipe 41 is connected with the degassing tower water outlet pipe 32; the lower water inlet branch pipe 46 is arranged on the female bed water outlet pipe 43, the female bed forward washing water inlet pipe 47 is arranged on the lower water inlet branch pipe 46, and the discharge end of the female bed forward washing water inlet pipe 47 is connected with the female bed water inlet pipe 41; the positive washing pipeline system of the negative bed 4 comprises a negative bed positive washing water inlet pipe 47 and a negative bed water outlet pipe 43; the backwashing pipeline system of the negative bed 4 comprises a lower water inlet branch pipe 46 and a negative bed reverse drain pipe 42, and two ends of the negative bed reverse drain pipe 42 are respectively connected with the negative bed water inlet pipe 41 and the clean water tank 6.
Further, a clean water pipe 611 connected with each PH meter 9 is connected with a clean water inlet pipe 61 of the clean water tank 6, and a clean water outlet pipe 62 of the clean water tank 6 is connected with the carbon filter inlet pipe 11; the discharge end of the clear water outlet pipe 62 is arranged at one side of the carbon filter counter-discharge pipe 12 away from the activated carbon filter 1; a waste pipe 711 connected to each of the PH meters 9 is connected to the waste water inlet pipe 71 of the waste water tank 7; the clean water pipe 611 and the waste water pipe 711 connected to the same PH meter 9 are connected in parallel.
Furthermore, the lower part of the cation bed 2 is also provided with an acid inlet pipe 24 for acid liquor to enter, and the middle part of the cation bed 2 is provided with an acid discharge pipe 25; the lower part of the negative bed 4 is also provided with an alkali inlet pipe 44 for alkali liquor to enter, and the middle part of the negative bed 4 is provided with an alkali discharge pipe 45; the other ends of the acid discharging pipe 25 and the alkali discharging pipe 45 are connected with the wastewater inlet pipe 71; the acid inlet pipe 24 and the alkali inlet pipe 44 are provided with metering pumps 10 for extracting solution.
Further, the two ends of the carbon filter backwash water inlet branch pipe 15, the two ends of the positive bed backwash water inlet pipe 14, the two ends of the negative bed forward wash water inlet pipe 47, the two ends of the positive bed reverse drain pipe 22, the two ends of the negative bed reverse drain pipe 42, and the carbon filter water inlet pipe 11, the carbon filter water outlet pipe 13, the positive bed water inlet pipe 21, the positive bed water outlet pipe 23, the negative bed water inlet pipe 41, the negative bed water outlet pipe 43 and the lower water inlet branch pipe 46 are all provided with a valve 101 for guiding the flow direction of the liquid, and the valve 101 is controlled to be opened or closed by the PLC controller so as to guide the flow direction of the liquid flowing through the valve.
Further, the acid inlet pipe 24, the alkali inlet pipe 44, the acid outlet pipe 25, the alkali outlet pipe 45, each clean water pipe 611 and each waste water pipe 711 are respectively provided with a valve No. two 101' for guiding the flow direction of the liquid, and the valve No. two 101' is controlled to be opened or closed by the PLC controller so as to guide the flow direction of the liquid flowing through the valve No. two 101 '.
The working principle of the utility model is as follows:
referring to fig. 1, when the clean water is subjected to primary desalination, the clean water flows in from the carbon filter water inlet pipe 11, flows through the carbon filter water outlet pipe 13, the cation bed water inlet pipe 21, the cation bed water outlet pipe 23, the degasser water inlet pipe 31, the degasser water outlet pipe 32 and the anion bed water inlet pipe 41 in sequence, and finally flows out from the anion bed water outlet pipe 43 to enter the next water treatment process.
After primary desalting, the activated carbon filter 1, the positive bed 2 and the negative bed 4 are required to be subjected to small backwashing respectively so as to wash suspended matters and gelatinous matters which are deposited in various devices and brought by clear water, and the suspended matters and gelatinous matters are prevented from affecting the efficiency of subsequent acid-base regeneration in the positive bed 2 and the negative bed 4.
Small backwash flow of activated carbon filter 1: the backwash water is clean water, the clean water is introduced from a carbon filter backwash water inlet branch pipe 15 and is discharged from a carbon filter backwash pipe 12, and the backwash water of the activated carbon filter 1 is discharged into a clarification tank 5 because the backwash water of the activated carbon filter 1 has better quality, so that the backwash water enters a boiler makeup water treatment system through the clarification tank 5, and the recycling of the backwash water of the activated carbon filter 1 is realized.
Small backwash flow of the cation bed 2: the backwash water is discharged from the carbon filter water outlet pipe 13, and is introduced from the cation bed backwash water inlet pipe 14 and discharged from the cation bed reverse drain pipe 22.
Small backwash procedure of the bed 4: the backwash water requires the use of another source of water which enters from the lower inlet leg 46 and exits from the cathode counter drain 42.
In order to control the backwashing time of each device according to the different backwash water turbidity of the activated carbon filter 1, the cation bed 2 and the anion bed 4 so as to achieve the purpose of saving water, a turbidity meter 8 for detecting the backwash water turbidity of the carbon filter backwash pipe 12, the cation bed backwash pipe 22 and the anion bed backwash pipe 42 is respectively arranged on the backwash water backwash pipe 8, and when the turbidity meter 8 detects that the backwash water turbidity flowing through the backwash water turbidity is less than 1FTU (turbidity unit), the backwash of the device is finished in advance through a PLC controller, and when the backwash water turbidity is more than 1FTU, the backwash of the device is prolonged through the PLC controller.
After the cation bed 2 and the anion bed 4 remove salt from clear water in sequence, the cation resin in the cation bed 2 and the anion resin in the anion bed 4 are required to be regenerated so as to be continuously put into use, so that acid liquid is required to enter the cation bed 2, alkali liquid is required to enter the anion bed 4, acid-alkali regeneration waste liquid after reaction is discharged, and the cation bed 2 and the anion bed 4 are respectively subjected to forward washing, so that the residue of the regeneration waste liquid is prevented.
Regeneration and forward washing processes of the cation bed 2 and the anion bed 4: leading acid liquor to enter from an acid inlet pipe 24, enabling the acid liquor to react with the positive resin in the positive bed 2 for regeneration, leading waste liquor generated by the reaction to exit from an acid discharge pipe 25, and then carrying out positive washing on the positive bed 2, wherein water for positive washing of the positive bed 2 is water discharged from a carbon filter water outlet pipe 13 and enters from a positive bed water inlet pipe 21 and exits from a positive bed water outlet pipe 23; alkali liquor is fed from an alkali feeding pipe 44, the alkali liquor reacts with the anion resin in the anion bed 4 to regenerate, after the waste liquor generated by the reaction is discharged from an alkali discharging pipe 45, the anion bed 4 is positively washed, and the water for positively washing the anion bed 4 is water separated from a lower water feeding branch pipe 46, enters from an anion bed positive washing water feeding pipe 47, flows through an anion bed water feeding pipe 41 and then is discharged from an anion bed water discharging pipe 43; the metering pumps 10 arranged on the acid inlet pipe 24 and the alkali inlet pipe 44 are used for extracting solution, and the acid-alkali regenerated waste liquid is discharged into the waste water tank 7 through the acid discharge pipe 25 and the alkali discharge pipe 45 respectively.
The PH value of the positive washing water of the positive bed 2 and the negative bed 4 is detected by PH meters 9 respectively arranged on the positive bed water outlet pipe 23 and the negative bed water outlet pipe 43, and the positive washing water flows to the clean water tank 6 or the wastewater tank 7 according to the different PH values: when the PH value of the normal washing water is less than 6 or more than 8, the discharged normal washing water of the positive bed water outlet pipe 23 and the negative bed water outlet pipe 43 is discharged into the waste water inlet pipe 71 through waste water pipes 711 connected with the normal washing water and is discharged into the waste water tank 7 for carrying out the neutralization treatment of the waste water; when the PH value of the normal washing water is between 6 and 8, the normal washing water discharged from the positive bed water outlet pipe 23 and the negative bed water outlet pipe 43 respectively flows into the clean water inlet pipe 61 through the clean water pipe 611 connected with the normal washing water to enter the clean water tank 6 for recycling, for example, the clean water outlet pipe 62 is connected with the carbon filter water inlet pipe 11, and the water in the clean water tank 6 is used as the water inlet of the activated carbon filter 1 to be reused in the boiler makeup water treatment system.
Wherein, the two ends of the carbon filter backwash water inlet branch pipe 15, the two ends of the positive bed backwash water inlet pipe 14, the two ends of the negative bed forward washing water inlet pipe 47, the two ends of the positive bed reverse discharge pipe 22, the two ends of the negative bed reverse discharge pipe 42, and the carbon filter water inlet pipe 11, the carbon filter water outlet pipe 13, the positive bed water inlet pipe 21, the positive bed water outlet pipe 23, the negative bed water inlet pipe 41, the negative bed water outlet pipe 43 and the lower water inlet branch pipe 46 are all provided with a valve 101; the acid inlet pipe 24, the alkali inlet pipe 44, the acid outlet pipe 25, the alkali outlet pipe 45, each clear water pipe 611 and each waste water pipe 711 are respectively provided with a valve No. two 101', and the valves No. one 101 and No. two 101' are respectively opened or closed by a PLC controller so as to guide the flow direction of liquid flowing through the valves No. two 101 and No. two 101 '.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (9)
1. A device for recycling regenerated wastewater of a primary desalting system in a sectional manner comprises an active carbon filter (1), a positive bed (2), a vacuum degassing tower (3) and a negative bed (4) which are sequentially connected in series through pipelines; the active carbon filter (1), the positive bed (2) and the negative bed (4) are respectively provided with a positive washing pipeline system for positive washing; the active carbon filter (1), the positive bed (2) and the negative bed (4) are respectively provided with a backwashing pipeline system for backwashing the active carbon filter; resin regeneration pipeline systems are respectively arranged on the positive bed (2) and the negative bed (4); the method is characterized in that: the discharge end of the backwashing pipeline system of the activated carbon filter (1) is connected with a clarification tank (5); the discharge ends of the backwashing pipeline systems of the male bed (2) and the female bed (4) are connected with a clean water tank (6); the backwashing pipeline systems of the activated carbon filter (1), the cation bed (2) and the anion bed (4) are respectively provided with a turbidity meter (8) for detecting the turbidity of the backwashing water discharged by the activated carbon filter; PH meters (9) for detecting the PH value of the positive washing water discharged by the positive bed (2) and the negative bed (4) are arranged on the positive washing pipeline systems; each PH meter (9) is connected with the clean water tank (6) through a clean water pipe (611) and connected with the wastewater tank (7) through a wastewater pipe (711).
2. The apparatus for staged recovery of primary desalination system regeneration wastewater of claim 1 wherein: the positive washing pipeline system of the activated carbon filter (1) comprises a carbon filter water inlet pipe (11) arranged at the upper part of the activated carbon filter (1) and a carbon filter water outlet pipe (13) arranged at the lower part of the activated carbon filter (1); the back washing pipeline system of the activated carbon filter (1) comprises a carbon filter back washing water inlet branch pipe (15) and a carbon filter back discharge pipe (12); two ends of the carbon filter backwashing water inlet branch pipe (15) are respectively connected with the carbon filter water inlet pipe (11) and the carbon filter water outlet pipe (13); two ends of the carbon filter reverse drain pipe (12) are respectively connected with the carbon filter water inlet pipe (11) and the clarifier (5); the carbon filter reverse drain pipe (12) is arranged between the carbon filter backwash water inlet branch pipe (15) and the activated carbon filter (1).
3. The apparatus for staged recovery of primary desalination system regeneration wastewater of claim 2 wherein: the positive washing pipeline system of the cation bed (2) comprises a cation bed water inlet pipe (21) arranged at the upper part of the cation bed (2) and a cation bed water outlet pipe (23) arranged at the lower part of the cation bed (2), wherein the cation bed water inlet pipe (21) is connected with the carbon filter water outlet pipe (13); the backwashing pipeline system of the positive bed (2) comprises a positive bed backwashing water inlet pipe (14) and a positive bed reverse drain pipe (22); two ends of the positive bed backwashing water inlet pipe (14) are respectively connected with the carbon filter water outlet pipe (13) and the positive bed water outlet pipe (23); two ends of the cation bed reverse drain pipe (22) are respectively connected with the cation bed water inlet pipe (21) and the clean water tank (6).
4. A device for the staged recovery of primary desalination system regeneration wastewater as defined in claim 3, wherein: the upper part of the vacuum degassing tower (3) is provided with a degassing tower water inlet pipe (31), and the lower part of the vacuum degassing tower is provided with a degassing tower water outlet pipe (32); the degasser water inlet pipe (31) is connected with the cation bed water outlet pipe (23).
5. The apparatus for staged recovery of primary desalination system regeneration wastewater as defined in claim 4, wherein: the upper part of the female bed (4) is provided with a female bed water inlet pipe (41), and the lower part thereof is provided with a female bed water outlet pipe (43); the female bed water inlet pipe (41) is connected with the degassing tower water outlet pipe (32); a lower water inlet branch pipe (46) is arranged on the negative bed water outlet pipe (43), a negative bed forward-washing water inlet pipe (47) is arranged on the lower water inlet branch pipe (46), and the discharge end of the negative bed forward-washing water inlet pipe (47) is connected with the negative bed water inlet pipe (41); the positive washing pipeline system of the negative bed (4) comprises a positive washing water inlet pipe (47) of the negative bed and a water outlet pipe (43) of the negative bed; the backwashing pipeline system of the negative bed (4) comprises a lower water inlet branch pipe (46) and a negative bed reverse discharge pipe (42), and two ends of the negative bed reverse discharge pipe (42) are respectively connected with the negative bed water inlet pipe (41) and the clean water tank (6).
6. The apparatus for staged recovery of primary desalination system regeneration wastewater of claim 2 wherein: a clear water pipe (611) connected with each PH meter (9) is connected with a clear water inlet pipe (61) of the clear water tank (6), and a clear water outlet pipe (62) of the clear water tank (6) is connected with the carbon filter inlet pipe (11); the discharge end of the clear water outlet pipe (62) is arranged at one side of the carbon filter reverse drain pipe (12) away from the activated carbon filter (1); a waste pipe (711) connected with each PH meter (9) is connected with a waste water inlet pipe (71) of the waste water tank (7); the clean water pipe (611) and the waste water pipe (711) which are connected with the same PH meter (9) are arranged in parallel.
7. The apparatus for staged recovery of primary desalination system regeneration wastewater as defined in claim 6, wherein: an acid inlet pipe (24) for acid liquid to enter is also arranged at the lower part of the cation bed (2), and an acid discharge pipe (25) is arranged at the middle part of the cation bed (2); the lower part of the negative bed (4) is also provided with an alkali inlet pipe (44) for alkali liquor to enter, and the middle part of the negative bed (4) is provided with an alkali discharge pipe (45); the other ends of the acid discharging pipe (25) and the alkali discharging pipe (45) are connected with the wastewater inlet pipe (71); the acid inlet pipe (24) and the alkali inlet pipe (44) are provided with metering pumps (10) for extracting solution.
8. The apparatus for staged recovery of primary desalination system regeneration wastewater as defined in claim 5, wherein: the two ends of the carbon filter backwash water inlet branch pipe (15), the two ends of the positive bed backwash water inlet pipe (14), the two ends of the negative bed forward washing water inlet pipe (47), the two ends of the positive bed reverse discharge pipe (22), the two ends of the negative bed reverse discharge pipe (42), and the carbon filter water inlet pipe (11), the carbon filter water outlet pipe (13), the positive bed water inlet pipe (21), the positive bed water outlet pipe (23), the negative bed water inlet pipe (41), the negative bed water outlet pipe (43) and the lower water inlet branch pipe (46) are respectively provided with a valve (101) for guiding the flow direction of liquid, and the valves (101) are opened or closed by the PLC controller to guide the flow direction of the liquid flowing through the valves.
9. The apparatus for staged recovery of primary desalination system regenerated wastewater as defined in claim 7 wherein: the acid inlet pipe (24), the alkali inlet pipe (44), the acid discharge pipe (25), the alkali discharge pipe (45), each clear water pipe (611) and each waste water pipe (711) are respectively provided with a second valve (101 ') for guiding the flow direction of liquid, and the second valves (101') are respectively opened or closed by a PLC controller so as to guide the flow direction of the liquid flowing through the second valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321277409.9U CN220364447U (en) | 2023-05-24 | 2023-05-24 | Device for recycling regenerated wastewater of primary desalting system in segmented mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321277409.9U CN220364447U (en) | 2023-05-24 | 2023-05-24 | Device for recycling regenerated wastewater of primary desalting system in segmented mode |
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| CN220364447U true CN220364447U (en) | 2024-01-19 |
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| CN202321277409.9U Active CN220364447U (en) | 2023-05-24 | 2023-05-24 | Device for recycling regenerated wastewater of primary desalting system in segmented mode |
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| Country | Link |
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| CN (1) | CN220364447U (en) |
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2023
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