CN112441699A - High-salt high-concentration organic wastewater treatment device and method - Google Patents
High-salt high-concentration organic wastewater treatment device and method Download PDFInfo
- Publication number
- CN112441699A CN112441699A CN202011246497.7A CN202011246497A CN112441699A CN 112441699 A CN112441699 A CN 112441699A CN 202011246497 A CN202011246497 A CN 202011246497A CN 112441699 A CN112441699 A CN 112441699A
- Authority
- CN
- China
- Prior art keywords
- unit
- salt
- water
- wastewater
- electrodialysis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/041—Treatment of water, waste water, or sewage by heating by distillation or evaporation by means of vapour compression
-
- 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
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
-
- 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
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
Landscapes
- 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)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention relates to wastewater treatment, in particular to a high-salt high-concentration organic wastewater treatment device and method. A high-salt high-concentration organic wastewater treatment device is characterized by comprising: a regulating pool: the device is used for adjusting the water quality and the water quantity of the high-salt high-concentration organic wastewater and ensuring the stable operation of the subsequent treatment process; a hardness removing unit: removing Ca in high-salt high-concentration organic wastewater2+And Mg2+And the scaling risk of the subsequent treatment unit is avoided. The invention has the beneficial effects that: the membrane separation process, the MVR evaporation process, the advanced oxidation process, the anaerobic biochemical process and the MBR process are combined, so that the defects of high energy consumption and high construction cost of the traditional direct evaporation process are overcome, and the purposes of reducing evaporation capacity, energy consumption and construction cost are realized.
Description
Technical Field
The invention relates to wastewater treatment, in particular to a high-salt high-concentration organic wastewater treatment device and method.
Background
Along with the industrial process of China, various industrial enterprises generate a large amount of high-salt and high-concentration organic wastewater every year. The high-salt organic wastewater usually contains a large amount of inorganic salt and organic matters, namely organic matter content CODCr is more than 10000mg/L and no less than 3.5 percent of soluble solids, wherein the salt content is represented by sodium chloride concentration, and the salt content is no less than 1 percent by mass. The high-salt organic wastewater has the characteristics of high salinity, high COD concentration, complex components and the like, and because the high-salt organic wastewater contains soluble inorganic salts with higher concentration and refractory organic matters, the high-salt organic wastewater can cause serious influence on soil and natural water bodies when being directly discharged without treatment, and can bring irreversible harm to the natural environment and human health.
Because the high-salt high-concentration organic wastewater has high-concentration soluble inorganic salt and refractory organic matters, the high-salt high-concentration organic wastewater cannot be directly treated by a biochemical process, and the conventional process firstly adopts an MVR evaporation technology to remove the inorganic salt in the wastewater and then carries out biochemical treatment, the process has higher construction cost and energy consumption. Therefore, the exploration and development of a new method and a new device for treating the high-salt high-concentration organic wastewater have important significance for environmental protection, energy conservation and emission reduction in China.
The traditional high-salt high-concentration organic wastewater treatment process mainly adopts MVR evaporation and biochemical treatment process, and has the following defects:
(1) the required evaporation capacity is large, and the energy consumption is high;
(2) the high-salt high-concentration organic wastewater contains high-concentration Cl < - >, the MVR evaporator and matched pipes, pipe fittings and valves need to be made of titanium materials, and the construction cost is high;
(3) the evaporator occupies a large area.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and provides a device and a method for treating high-salt high-concentration organic wastewater.
The invention is realized by the following technical scheme:
a high-salt high-concentration organic wastewater treatment device comprises:
a regulating pool: the device is used for adjusting the water quality and the water quantity of the high-salt high-concentration organic wastewater and ensuring the stable operation of the subsequent treatment process;
a hardness removing unit: removing Ca in high-salt high-concentration organic wastewater2+And Mg2+The scaling risk of the subsequent treatment unit is avoided;
an electrodialysis desalination unit: and (3) removing salt in the high-salt high-concentration organic wastewater by adopting an electrodialysis process, feeding electrodialysed fresh water into a subsequent treatment unit, and feeding the concentrated water into an MVR evaporation unit. The electrodialysis concentration rate can reach 90%, so the evaporation capacity of the MVR device can be reduced by 90%;
MVR evaporation unit: removing salt in the electrodialysis concentrated water, feeding the evaporated condensate water and the electrodialysis fresh water into a subsequent treatment unit together, and transporting the evaporated crystal salt;
a middle water tank: the device is used for collecting fresh water generated by the electrodialysis unit and evaporated condensed water generated by the MVR evaporation device;
an advanced oxidation device: the device is used for removing refractory organic matters in the wastewater, improving the biodegradability of the wastewater and reducing the organic load of a subsequent biochemical treatment unit;
UASB unit: further reducing COD of the wastewater to meet the water inlet condition of the MBR unit;
MBR unit: used for reducing COD concentration and suspended matter concentration in the wastewater;
a clean water tank: for collecting water produced by the MBR unit.
According to the above technical solution, preferably, the electrodialysis desalination unit includes a plurality of electrodialysis modules, each electrodialysis module includes a plurality of membranes, and the membranes are made of one of Polyethylene (PE), Polysulfone (PFS) or polyoxyethylene.
According to the above technical solution, preferably, the advanced oxidation device is one of a catalytic oxidation device, an ozone oxidation device or a micro electrolysis device.
According to the above technical solution, preferably, the MBR unit includes a plurality of membrane modules, and the membrane modules are one of flat membrane and hollow fiber membrane.
According to the above technical solution, preferably, the membrane element of the MBR unit is made of one of polyvinylidene fluoride (PVDF), Polytetrafluoroethylene (PTFE), Polyethersulfone (PES), or Polysulfone (PFS).
A method for treating high-salt high-concentration organic wastewater comprises the following steps:
(1) the method comprises the following steps that (1) raw water of high-salt high-concentration organic wastewater enters a regulating reservoir to regulate water quality and water quantity so as to ensure stable operation of a subsequent treatment process;
(2) the wastewater of the regulating reservoir enters a hardness removal unit through a lift pump, and Ca2+ and Mg2+ in the wastewater are removed;
(3) the effluent of the hardness removing unit enters an electrodialysis unit to remove salt in the wastewater, fresh water enters an intermediate water tank, and concentrated water enters an MVR evaporation unit;
(4) the electrodialysis concentrated water enters an MVR evaporation unit to remove salt in the electrodialysis concentrated water, the evaporation condensed water enters a subsequent treatment unit, and crystallized salt is transported outwards;
(5) electrodialytic fresh water and MVR evaporation condensed water enter an intermediate water tank together;
(6) the wastewater in the middle water tank enters the UASB unit through a lift pump;
(7) the effluent of the UASB unit enters an MBR unit;
(8) and (4) enabling water produced by the MBR unit to enter a clean water tank.
The invention has the beneficial effects that:
(1) according to the method and the device for treating the high-salt high-concentration organic wastewater, the membrane separation process, the MVR evaporation process, the advanced oxidation process, the anaerobic biochemical process and the MBR process are combined, so that the defects of high energy consumption and high construction cost of the traditional direct evaporation process are overcome, and the purposes of reducing evaporation capacity, energy consumption and construction cost are realized;
(2) the invention adopts the advanced oxidation and biochemical composite process to reduce the organic matters in the wastewater, thereby not only avoiding the defect of high operating cost of the simple advanced oxidation process, but also overcoming the adverse effect of high-concentration refractory organic matters on a biochemical system.
Drawings
Fig. 1 shows a schematic front view of an embodiment of the present invention.
In the figure: 1. the system comprises a regulating tank, 2, a hardness removal unit, 3, an electrodialysis desalination unit, 4, an MVR evaporation unit, 5, an intermediate water tank, 6, an UASB unit, 7, an MBR unit and 8, a clean water tank.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the following preferred embodiments.
The invention relates to a high-salt high-concentration organic wastewater treatment device, which comprises:
an adjusting tank 1: the device is used for adjusting the water quality and the water quantity of the high-salt high-concentration organic wastewater and ensuring the stable operation of the subsequent treatment process;
the hardness removing unit 2: removing Ca in high-salt high-concentration organic wastewater2+And Mg2+The scaling risk of the subsequent treatment unit is avoided;
electrodialysis desalination unit 3: and (3) removing salt in the high-salt high-concentration organic wastewater by adopting an electrodialysis process, feeding electrodialysed fresh water into a subsequent treatment unit, and feeding the concentrated water into an MVR evaporation unit. The electrodialysis concentration rate can reach 90%, so the evaporation capacity of the MVR device can be reduced by 90%;
MVR evaporation unit 4: removing salt in the electrodialysis concentrated water, feeding the evaporated condensate water and the electrodialysis fresh water into a subsequent treatment unit together, and transporting the evaporated crystal salt;
and (5) an intermediate water tank: the device is used for collecting fresh water generated by the electrodialysis unit and evaporated condensed water generated by the MVR evaporation device;
an advanced oxidation device: the device is used for removing refractory organic matters in the wastewater, improving the biodegradability of the wastewater and reducing the organic load of a subsequent biochemical treatment unit;
UASB unit 6: further reducing COD of the wastewater to meet the water inlet condition of the MBR unit;
MBR unit 7: used for reducing COD concentration and suspended matter concentration in the wastewater;
the clean water tank 8: for collecting water produced by the MBR unit.
According to the above embodiment, preferably, the electrodialysis desalination unit includes a plurality of electrodialysis modules, each electrodialysis module includes a plurality of membranes, and the membranes are made of one of Polyethylene (PE), Polysulfone (PFS), and polyoxyethylene.
According to the above embodiment, preferably, the advanced oxidation device is one of a catalytic oxidation device, an ozone oxidation device, and a micro electrolysis device.
According to the above embodiment, preferably, the MBR unit includes a plurality of membrane modules, and the membrane modules are one of flat membrane and hollow fiber membrane.
According to the above embodiment, preferably, the membrane element of the MBR unit is made of one of polyvinylidene fluoride (PVDF), Polytetrafluoroethylene (PTFE), Polyethersulfone (PES), and Polysulfone (PFS).
A method for treating high-salt high-concentration organic wastewater comprises the following steps:
(1) the method comprises the following steps that (1) raw water of high-salt high-concentration organic wastewater enters a regulating reservoir to regulate water quality and water quantity so as to ensure stable operation of a subsequent treatment process;
(2) the wastewater of the regulating reservoir enters a hardness removal unit through a lift pump, and Ca2+ and Mg2+ in the wastewater are removed;
(3) the effluent of the hardness removing unit enters an electrodialysis unit to remove salt in the wastewater, fresh water enters an intermediate water tank, and concentrated water enters an MVR evaporation unit;
(4) the electrodialysis concentrated water enters an MVR evaporation unit to remove salt in the electrodialysis concentrated water, the evaporation condensed water enters a subsequent treatment unit, and crystallized salt is transported outwards;
(5) electrodialytic fresh water and MVR evaporation condensed water enter an intermediate water tank together;
(6) the wastewater in the middle water tank enters the UASB unit through a lift pump;
(7) the effluent of the UASB unit enters an MBR unit;
(8) and (4) enabling water produced by the MBR unit to enter a clean water tank.
The invention has the beneficial effects that:
(1) according to the method and the device for treating the high-salt high-concentration organic wastewater, the membrane separation process, the MVR evaporation process, the advanced oxidation process, the anaerobic biochemical process and the MBR process are combined, so that the defects of high energy consumption and high construction cost of the traditional direct evaporation process are overcome, and the purposes of reducing evaporation capacity, energy consumption and construction cost are realized;
(2) the invention adopts the advanced oxidation and biochemical composite process to reduce the organic matters in the wastewater, thereby not only avoiding the defect of high operating cost of the simple advanced oxidation process, but also overcoming the adverse effect of high-concentration refractory organic matters on a biochemical system.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A high-salt high-concentration organic wastewater treatment device is characterized by comprising:
a regulating pool: the device is used for adjusting the water quality and the water quantity of the high-salt high-concentration organic wastewater and ensuring the stable operation of the subsequent treatment process;
a hardness removing unit: removing Ca in high-salt high-concentration organic wastewater2+And Mg2+The scaling risk of the subsequent treatment unit is avoided;
an electrodialysis desalination unit: and (3) removing salt in the high-salt high-concentration organic wastewater by adopting an electrodialysis process, feeding electrodialysed fresh water into a subsequent treatment unit, and feeding the concentrated water into an MVR evaporation unit. The electrodialysis concentration rate can reach 90%, so the evaporation capacity of the MVR device can be reduced by 90%;
MVR evaporation unit: removing salt in the electrodialysis concentrated water, feeding the evaporated condensate water and the electrodialysis fresh water into a subsequent treatment unit together, and transporting the evaporated crystal salt;
a middle water tank: the device is used for collecting fresh water generated by the electrodialysis unit and evaporated condensed water generated by the MVR evaporation device;
an advanced oxidation device: the device is used for removing refractory organic matters in the wastewater, improving the biodegradability of the wastewater and reducing the organic load of a subsequent biochemical treatment unit;
UASB unit: further reducing COD of the wastewater to meet the water inlet condition of the MBR unit;
MBR unit: used for reducing COD concentration and suspended matter concentration in the wastewater;
a clean water tank: for collecting water produced by the MBR unit.
2. The apparatus for treating high-salinity high-concentration organic wastewater according to claim 1, characterized in that: the electrodialysis desalination unit comprises a plurality of electrodialysis modules, each electrodialysis module comprises a plurality of membranes, and the membranes are made of Polyethylene (PE), Polysulfone (PFS) or polyoxyethylene.
3. The apparatus for treating high-salinity high-concentration organic wastewater according to claim 1, characterized in that: the advanced oxidation device is one of a catalytic oxidation device, an ozone oxidation device or a micro-electrolysis device.
4. The apparatus for treating high-salinity high-concentration organic wastewater according to claim 1, characterized in that: the MBR unit comprises a plurality of membrane modules, and the membrane modules are one of flat membrane or hollow fiber membrane.
5. The apparatus for treating high-salinity high-concentration organic wastewater according to claim 1, characterized in that: the membrane element of the MBR unit is made of one of polyvinylidene fluoride (PVDF), Polytetrafluoroethylene (PTFE), polyether sulfone (PES) or Polysulfone (PFS).
6. A method for treating high-salt high-concentration organic wastewater is characterized by comprising the following steps:
(1) the method comprises the following steps that (1) raw water of high-salt high-concentration organic wastewater enters a regulating reservoir to regulate water quality and water quantity so as to ensure stable operation of a subsequent treatment process;
(2) the wastewater of the regulating reservoir enters a hardness removal unit through a lift pump, and Ca2+ and Mg2+ in the wastewater are removed;
(3) the effluent of the hardness removing unit enters an electrodialysis unit to remove salt in the wastewater, fresh water enters an intermediate water tank, and concentrated water enters an MVR evaporation unit;
(4) the electrodialysis concentrated water enters an MVR evaporation unit to remove salt in the electrodialysis concentrated water, the evaporation condensed water enters a subsequent treatment unit, and crystallized salt is transported outwards;
(5) electrodialytic fresh water and MVR evaporation condensed water enter an intermediate water tank together;
(6) the wastewater in the middle water tank enters the UASB unit through a lift pump;
(7) the effluent of the UASB unit enters an MBR unit;
(8) and (4) enabling water produced by the MBR unit to enter a clean water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011246497.7A CN112441699A (en) | 2020-11-10 | 2020-11-10 | High-salt high-concentration organic wastewater treatment device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011246497.7A CN112441699A (en) | 2020-11-10 | 2020-11-10 | High-salt high-concentration organic wastewater treatment device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112441699A true CN112441699A (en) | 2021-03-05 |
Family
ID=74736516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011246497.7A Pending CN112441699A (en) | 2020-11-10 | 2020-11-10 | High-salt high-concentration organic wastewater treatment device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112441699A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113896384A (en) * | 2021-12-13 | 2022-01-07 | 中节能润达(烟台)环保股份有限公司 | Novel high organic waste water of high salt handles device |
-
2020
- 2020-11-10 CN CN202011246497.7A patent/CN112441699A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113896384A (en) * | 2021-12-13 | 2022-01-07 | 中节能润达(烟台)环保股份有限公司 | Novel high organic waste water of high salt handles device |
| CN113896384B (en) * | 2021-12-13 | 2022-03-11 | 中节能润达(烟台)环保股份有限公司 | High organic effluent treatment plant of high salt |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2537810B1 (en) | Method for generating fresh water and method for desalinating sea water | |
| Song et al. | Salinity build-up in osmotic membrane bioreactors: Causes, impacts, and potential cures | |
| BR112013024628B1 (en) | method and system for treating water used for industrial purposes | |
| Zhou et al. | The valorization of biogas slurry with a pilot dual stage reverse osmosis membrane process | |
| Murthy et al. | Treatment of distillery spent wash by combined UF and RO processes | |
| Kaleekkal et al. | Engineered osmosis–sustainable technology for water recovery, product concentration and energy generation | |
| CN104445761A (en) | Energy-saving seawater purification equipment | |
| CN112441699A (en) | High-salt high-concentration organic wastewater treatment device and method | |
| Kim et al. | Forward osmosis membrane filtration for microalgae harvesting cultivated in sewage effluent | |
| CN215517058U (en) | High-salt high-concentration organic wastewater treatment device | |
| CN203807297U (en) | Sewage treatment and sea water desalting device | |
| CN108706839A (en) | A kind of chemical industrial park comprehensive wastewater treatment system with high salt | |
| CN202465443U (en) | System for processing brine waste to zero emission and recycling | |
| CN105016560A (en) | Sewage treatment system | |
| CN102329044A (en) | Method for treating wastewater from bamboo product | |
| CN111003888A (en) | Treatment method of chemical wastewater of dead pigs | |
| CN219972095U (en) | System for treating flushing wastewater of fishing port wharf | |
| CN214936821U (en) | Coal chemical wastewater treatment system | |
| CN215627446U (en) | Kitchen biogas slurry purification device | |
| CN214654296U (en) | High salt industrial waste water resource utilization processing system | |
| Gubari et al. | Application of reverse osmosis to improve removal of residual salt content in electrodialysis process | |
| Nguyen et al. | Application of forward osmosis membrane technology in nutrient recovery and water reuse | |
| Nguyen et al. | Integrated and hybrid anaerobic treatment technology | |
| Alftessi et al. | Development and implementations of integrated osmosis system | |
| CN202945122U (en) | Treatment device for high-salinity wastewater of food industry |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |