CN114772806A - Multifunctional high-difficulty water treatment process with high turbidity, high hardness and high salt temperature - Google Patents

Multifunctional high-difficulty water treatment process with high turbidity, high hardness and high salt temperature Download PDF

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Publication number
CN114772806A
CN114772806A CN202210390987.7A CN202210390987A CN114772806A CN 114772806 A CN114772806 A CN 114772806A CN 202210390987 A CN202210390987 A CN 202210390987A CN 114772806 A CN114772806 A CN 114772806A
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water
ion
enters
turbidity
effluent
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姬克瑶
姬保江
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Dalian Dowellone Membrane Technology Co ltd
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Dalian Dowellone Membrane Technology Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104—Devices therefor; Their operating or servicing
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/16—Regeneration of sorbents, filters

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Sorption (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

The invention discloses a multifunctional high-turbidity high-hardness high-salinity high-temperature high-difficulty water treatment process, which comprises the following steps of: the wastewater is sent into a turbidity removal device through a raw water pump, the water production end of the turbidity removal device enters an ion adsorption device, and the water produced by the ion adsorption device is recycled in an original system; sending the analytic waste liquid generated by the ion adsorption device into a membrane salt separation device, and sending concentrated water generated by the membrane salt separation device into an analytic waste liquid tank; the effluent of the analysis waste liquid tank enters an electro-catalytic reactor, the effluent enters an analysis liquid tank after ion components are removed from the effluent, and the effluent of the analysis liquid tank enters an ion adsorption device after being filtered by a filter to realize the performance recovery of the effluent; fresh water generated by the membrane salt separation device enters a replacement water tank, and effluent of the replacement water tank is used as replacement water and enters the ion adsorption device for recycling. The process can reduce the wastewater discharge of enterprises, reduce the production cost, realize the resource utilization of wastewater, save the occupied area of solid wastes and the management cost, and improve the reliability and the stability of water treatment.

Description

Multifunctional high-turbidity high-hardness high-salt high-temperature high-difficulty water treatment process
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to a multifunctional high-difficulty water treatment process with high turbidity, high hardness and high salt temperature.
Background
Under the condition that the requirements of environmental protection policies are increasingly strict, water conservation, emission reduction, energy conservation, consumption reduction and carbon emission reduction are one of the primary tasks of industrial water treatment. The traditional wastewater generally has the characteristics of high salt content, complex components, easy scaling and corrosion, high organic matter concentration, difficult degradation and the like, and the conventional physical and chemical methods and biochemical methods are difficult to obtain ideal treatment effects and have high energy consumption; if the direct discharge inevitably produces adverse effects on the environment, a large amount of water resources are seriously wasted. The membrane desalination technology mainly based on reverse osmosis has the recovery rate of only 75%, and the concentrated solution with higher salt content of 25% is discharged, and has the problem of serious membrane fouling.
The traditional high hardness, high turbidity, high ammonia nitrogen, high COD waste water treatment process has the problems of long system flow, complex equipment, large floor area, high operation cost, unstable system operation and the like, and has the defects of system scaling, ion enrichment, large waste liquid amount, large medicament amount, unstable water quality of produced water and the like, which always troubles the industry.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a multifunctional high-hardness high-salinity high-difficulty water treatment process, which can reduce the wastewater discharge of enterprises and the production cost, realize waste recycling, save the occupied area of equipment, reduce the solid waste discharge and improve the reliability and stability of water treatment.
In order to achieve the purpose, the application provides a multifunctional high-difficulty water treatment process with high turbidity, high hardness and high salt temperature, and the process flow comprises the following steps: the waste water is sent into a turbidity removal device through a raw water pump, flushing waste water generated by the turbidity removal device enters a slag water pool for recycling, a water production end of the turbidity removal device enters an ion adsorption device, and water produced by the ion adsorption device is recycled in an original system; the ion adsorption device is filled with a functional adsorbent, the functional adsorbent is resolved by a resolving agent after being saturated, the generated resolving waste liquid is sent into a membrane salt separation device, and concentrated water generated by the membrane salt separation device enters a resolving waste liquid tank; the effluent of the analysis waste liquid tank enters an electro-catalytic reactor, enters an analysis liquid tank after ion components are removed from the effluent, is filtered by a filter, enters an ion adsorption device to realize performance recovery, and is recycled; fresh water generated by the membrane salt separation device enters a displacement water tank, and effluent of the displacement water tank is used as displacement water and enters the ion adsorption device for recycling.
Further, the turbidity removal device comprises 4-10 multifunctional high-efficiency filters, and 100-300m is realized3The treatment amount per hour is freely controlled, and the turbidity of the produced water is less than or equal to5NTU。
Furthermore, the ion adsorption device comprises 2-6 single-chamber bed ion adsorbers, 1 multi-chamber bed ion adsorber and 1 cleaning tower, and 100-300m ion adsorption can be realized3The treatment amount is freely controlled, and ions in the wastewater are subjected to directional ion adsorption at 0-100 ℃ by a functional adsorbent.
Furthermore, functional adsorbents are assembled in the single-chamber bed ion adsorber and the multi-chamber bed ion adsorber, and the functional adsorbents are organic polymer materials with functional groups; different functional adsorbents are selected according to the need of ion removal, all the single-chamber bed ion adsorbers work on line simultaneously in normal operation, and the multi-chamber bed ion adsorber is reserved under line.
Further, after the function of one single-chamber bed ion adsorber which runs on line fails, automatically pouring the materials into the cleaning tower, and realizing the analysis replacement and cleaning in the cleaning tower; and simultaneously pouring the filler of the multi-chamber bed ion adsorber into the single-chamber bed ion adsorber with failed function, and pouring the filler into the multi-chamber bed ion adsorber after the filler in the cleaning tower is resolved and cleaned.
Furthermore, the membrane salt separation device adopts a combination form of ultrafiltration, nanofiltration, an ion exchange membrane and reverse osmosis, and the recovery rate can reach more than 60-95%.
Furthermore, the electrocatalysis reactor adopts a carbon composite material electrode, and a cross flow baffle is arranged in the electrocatalysis reactor.
Furthermore, the turbidity removal device and the ion adsorption device are in modular design, and the skid-mounted number can be adjusted according to needs.
Furthermore, the analysis agent is a composite liquid formed by combining a plurality of inorganic sodium salts and organic sodium salts according to the proportion of 0.5-8.
Compared with the prior art, the technical scheme adopted by the invention has the advantages that: compared with the traditional technology, the process has the characteristics of no addition of chemicals, no adjustment of PH value, no cooling and the like, provides a subtraction design concept, and can effectively realize the treatment of wastewater containing complex water quality components such as high hardness, high turbidity, high ammonia nitrogen, high COD and the like; the produced water has excellent quality, stable water quality, high resolving efficiency, low resolving agent consumption and less resolving waste liquid, and simultaneously, the in-vitro resolving process of the ion adsorption device is utilized, so that the enrichment problem of chloride ions can be quickly and effectively solved, and the problem of dirt blockage of a resolving pipeline is solved; the invention can effectively reduce the wastewater treatment cost, improve the reliability and stability of system operation, and has certain demonstration value and popularization value.
Drawings
FIG. 1 is a flow chart of a process for treating multifunctional high-hardness high-salt high-difficulty water with high turbidity and high salt temperature.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the application, i.e., the embodiments described are only a subset of, and not all embodiments of the application. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
Example 1
As shown in fig. 1, the present embodiment provides a multifunctional high-turbidity high-hardness high-salt high-temperature high-difficulty water treatment process, which can be widely applied in various water treatment fields such as coal chemical wastewater, wastewater reuse, high-density tank, saline wastewater, coal gasification wastewater, and ion exchange regeneration wastewater. The specific embodiment is that the waste water is sent into a turbidity removal device through a raw water pump, flushing waste water generated by the turbidity removal device enters a slag water pool for recycling, a water production end of the turbidity removal device enters an ion adsorption device, and water produced by the ion adsorption device is recycled in an original system; the ion adsorption device is filled with a functional adsorbent, the functional adsorbent is resolved by a resolving agent after being saturated, the generated resolving waste liquid is sent into a membrane salt separation device, and concentrated water generated by the membrane salt separation device enters a resolving waste liquid tank; the effluent of the analysis waste liquid tank enters an electro-catalytic reactor, enters an analysis liquid tank after ion components are removed from the effluent, is filtered by a filter, enters an ion adsorption device to realize performance recovery, and is recycled; fresh water generated by the membrane salt separation device enters a replacement water tank, and effluent of the replacement water tank is used as replacement water and enters the ion adsorption device for recycling.
The turbidity removal device comprises 4-10 multifunctional high-efficiency filters, and 100-300m3The treatment amount per hour is freely controlled, and meanwhile, the filter adopts a continuous circulating backwashing function, so that the optimal filtering operation effect is realized, the fixed online operation quantity and the fixed offline backwashing quantity are ensured, the stable and long-period operation of the device is realized, and the turbidity of the produced water is less than or equal to 5 NTU.
The ion adsorption device comprises 2-6 single-chamber bed ion adsorbers, 1 multi-chamber bed ion adsorber and 1 cleaning tower, and 100-300m3Freely controlling the treatment amount, and performing directional ion adsorption on ions in the wastewater at 0-100 ℃ by using a functional adsorbent; functional adsorbents are assembled in the single-chamber bed ion adsorber and the multi-chamber bed ion adsorber, all the single-chamber bed ion adsorbers work on line simultaneously in normal operation, and the multi-chamber bed ion adsorber is reserved under the line. Automatically pouring the materials into a cleaning tower after the function of one single-chamber bed ion adsorber in online operation fails, and realizing analysis replacement and cleaning in the cleaning tower; and simultaneously pouring the filler of the multi-chamber bed ion adsorber into the single-chamber bed ion adsorber with the function failure, and pouring the filler into the multi-chamber bed ion adsorber after the filler in the cleaning tower is analyzed and cleaned. The multi-chamber bed ion adsorber does not participate in reaction in a non-emergency situation, but also has the functions of normal operation, analysis, replacement and the like. All the analysis and replacement operations are carried out in the cleaning tower, so that the chloride ions can not exceed the standard during the operation of the system, the high-efficiency utilization of the analysis agent is realized, the discharge treatment of the analysis waste liquid is reduced, and the aim of zero discharge of waste water is fulfilled. Process for ion adsorption deviceThe method is not limited to a single chamber or a plurality of chambers, and a deformation process having the same function is provided.
The turbidity removal filter and the ion adsorption filter can be subjected to water scrubbing and air-water scrubbing through self processes, so that the performance recovery is realized, the flushing wastewater is recycled, and no wastewater or waste liquid is generated. The turbidity removal device and the ion adsorption device adopt a modular design, the skid-mounted number can be freely adjusted as required, and the production and operation cost is reduced.
The electrocatalysis reactor can effectively remove hardness, ammonia nitrogen, COD and the like on the premise of not using a medicament, adopts a carbon composite material electrode, is more economical compared with the traditional electrode, and can effectively ensure the liquid phase retention time, realize high-efficiency reaction and improve the reaction efficiency by arranging the cross flow baffle plate inside the reactor.
The foregoing description of specific exemplary embodiments of the invention has been presented for the purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims (9)

1. A multifunctional high-difficulty water treatment process with high turbidity, high hardness and high salt temperature is characterized by comprising the following steps: the method comprises the following steps that waste water is sent into a turbidity removal device through a raw water pump, flushing waste water generated by the turbidity removal device enters a slag water pool for recycling, a water production end of the turbidity removal device enters an ion adsorption device, and water produced by the ion adsorption device is recycled in an original system; the ion adsorption device is filled with a functional adsorbent, the functional adsorbent is resolved by a resolving agent after being saturated, the generated resolving waste liquid is sent into a membrane salt separation device, and concentrated water generated by the membrane salt separation device enters a resolving waste liquid tank; the effluent of the desorption waste liquid tank enters an electro-catalytic reactor, and enters a desorption liquid tank after ion components are removed from the effluent, and the effluent of the desorption liquid tank enters an ion adsorption device to realize the performance recovery after being filtered by a filter, and is recycled; fresh water generated by the membrane salt separation device enters a replacement water tank, and effluent of the replacement water tank is used as replacement water and enters the ion adsorption device for recycling.
2. The process as claimed in claim 1, wherein the turbidity removal device comprises 4-10 high-efficiency multifunctional filters with a size of 100-300m3The treatment amount per hour is freely controlled, and the turbidity of the produced water is less than or equal to 5 NTU.
3. The process as claimed in claim 1, wherein the ion adsorption device comprises 2-6 single-chamber bed ion adsorbers, 1 multi-chamber bed ion adsorber and 1 cleaning tower, and the process can be implemented at 100-300m3The treatment amount is freely controlled, and ions in the wastewater are subjected to directional ion adsorption at 0-100 ℃ by a functional adsorbent.
4. The multifunctional high-difficulty water treatment process with high turbidity, high hardness and high salt temperature according to claim 3, wherein functional adsorbents are assembled in the single-chamber bed ion adsorber and the multi-chamber bed ion adsorber, and the functional adsorbents are organic polymer materials with functional groups; when in normal operation, all the single-chamber bed ion adsorbers work on line at the same time, and the multi-chamber bed ion adsorber is standby under the line.
5. The process of claim 4, wherein after the ion adsorber of one single-chamber bed in on-line operation fails, the material is automatically poured into the cleaning tower, and the desorption replacement and cleaning are implemented in the cleaning tower; and simultaneously pouring the filler of the multi-chamber bed ion adsorber into the single-chamber bed ion adsorber with the function failure, and pouring the filler into the multi-chamber bed ion adsorber after the filler in the cleaning tower is analyzed and cleaned.
6. The process of claim 1, wherein the membrane salt separation device is in the form of a combination of ultrafiltration, nanofiltration, ion exchange membrane, and reverse osmosis.
7. The process of claim 1, wherein the electrocatalytic reactor employs carbon composite electrodes and cross-flow baffles are disposed inside the electrocatalytic reactor.
8. The multifunctional high-difficulty water treatment process with high turbidity, high hardness and high salt temperature as claimed in claim 1, wherein the turbidity removal device and the ion adsorption device are in modular design, and the skid-mounted number is adjusted as required.
9. The process for treating high-difficulty water with high turbidity, high hardness and high salt temperature according to claim 1, wherein the resolving agent is a composite liquid formed by combining various inorganic sodium salts and organic sodium salts according to a ratio of 0.5-8.
CN202210390987.7A 2022-04-14 2022-04-14 Multifunctional high-difficulty water treatment process with high turbidity, high hardness and high salt temperature Pending CN114772806A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017206608A1 (en) * 2016-05-31 2017-12-07 江苏京源环保股份有限公司 Zero-discharge technique for separating sludge and salt from desulfurization wastewater
CN113277668A (en) * 2021-06-18 2021-08-20 海南合和环境科技有限公司 Integrated electrocatalysis wastewater hardness removal zero-discharge process

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017206608A1 (en) * 2016-05-31 2017-12-07 江苏京源环保股份有限公司 Zero-discharge technique for separating sludge and salt from desulfurization wastewater
CN113277668A (en) * 2021-06-18 2021-08-20 海南合和环境科技有限公司 Integrated electrocatalysis wastewater hardness removal zero-discharge process

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