CN114772820A - Backwashing water recovery equipment - Google Patents
Backwashing water recovery equipment Download PDFInfo
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- CN114772820A CN114772820A CN202210576367.2A CN202210576367A CN114772820A CN 114772820 A CN114772820 A CN 114772820A CN 202210576367 A CN202210576367 A CN 202210576367A CN 114772820 A CN114772820 A CN 114772820A
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- water
- tank
- membrane
- inclined plate
- backwashing
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 160
- 238000011001 backwashing Methods 0.000 title claims abstract description 46
- 238000011084 recovery Methods 0.000 title claims abstract description 27
- 239000012528 membrane Substances 0.000 claims abstract description 86
- 238000004062 sedimentation Methods 0.000 claims abstract description 43
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 38
- 238000000926 separation method Methods 0.000 claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- 239000000919 ceramic Substances 0.000 claims abstract description 10
- 230000005484 gravity Effects 0.000 claims abstract description 7
- 239000010802 sludge Substances 0.000 claims description 14
- 239000010865 sewage Substances 0.000 claims description 8
- 239000003814 drug Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 238000004659 sterilization and disinfection Methods 0.000 claims description 6
- 239000000701 coagulant Substances 0.000 claims description 3
- 229940079593 drug Drugs 0.000 claims 3
- 238000011109 contamination Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 10
- 238000004140 cleaning Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 239000002351 wastewater Substances 0.000 abstract description 5
- 238000006555 catalytic reaction Methods 0.000 abstract description 3
- 238000005273 aeration Methods 0.000 abstract description 2
- 239000008399 tap water Substances 0.000 description 5
- 235000020679 tap water Nutrition 0.000 description 5
- 230000004907 flux Effects 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000012459 cleaning agent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/11—Turbidity
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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)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses backwash water recovery equipment, relates to the field of water treatment, and aims to solve the problems of difficult recovery of backwash wastewater of a filter tank and large floor area in a water treatment process of a water plant. The equipment comprises a bidirectional flow inclined plate sedimentation tank, a membrane tank, a clear water tank, an air blower, a water production pump and a backwashing pump; the bidirectional flow inclined plate sedimentation tank consists of a dosing unit and a sedimentation unit; the membrane pool unit consists of a backwashing water pump, an aeration pump and a separation membrane; the separation membrane mainly adopts a gravity type pollution-resistant ceramic separation membrane. The invention can increase the pretreatment effect, reduce the membrane pollution and increase the cleaning period, adopts the ceramic membrane element with the catalysis effect, has long cleaning period, stable equipment water production and large water production, can be directly transformed on the basis of the original water plant process, and has low investment cost and operation cost and wide application prospect.
Description
Technical Field
The invention relates to the field of water treatment, in particular to backwashing water recovery equipment.
Background
Filter chamber backwashing wastewater and the like in the water treatment process of a water plant are main sources of wastewater of the water plant and account for 5 to 10 percent of daily water yield of the water plant. Because the quantity of tap water plants and the water production scale in China are gradually increased, the water quantity of the tap water plants is huge, if the tap water plants can be recycled and utilized, raw water resources and water delivery engineering cost are saved, and environmental pollution caused by waste water discharge is reduced, so that sustainable development and effective utilization of water resources are realized. China is a large water-consuming country, the water supply amount of China is about 6000 hundred million tons every year, backwashing water recovery equipment is popularized to save water, and the water saving amount can reach 180 hundred million tons to 600 hundred million tons per year at most. At present, the backwashing water recycling technology is still in a starting stage, a large-scale application example is provided, the technology is a commercial blue sea, and the growth space is huge.
At present, most domestic water plants have no backwashing water recovery, so that the waste of fresh water resources is caused to a great extent.
Disclosure of Invention
The invention aims to provide backwashing water recovery equipment which is used for solving the problems of difficult recovery and large floor area of backwashing wastewater of a filter tank in a water treatment process of a water plant. The invention provides backwashing water recovery equipment, which comprises modules such as a bidirectional flow inclined plate sedimentation tank, a membrane tank, a clear water tank, an automatic control device and the like, wherein (1) the bidirectional flow inclined plate sedimentation tank consists of a dosing unit and a sedimentation unit; (2) the membrane pool unit consists of a backwashing water pump, an aeration pump and a separation membrane; (3) the separating membrane is mainly a gravity type pollution-resistant ceramic separating membrane.
The invention relates to backwash water recovery equipment which comprises a bidirectional flow inclined plate sedimentation tank, a membrane tank, a clean water tank, an air blower, a water production pump and a backwash pump, wherein the membrane tank is arranged in the two-way flow inclined plate sedimentation tank;
a liquid inlet is arranged on the bidirectional flow inclined plate sedimentation tank, a water outlet of the bidirectional flow inclined plate sedimentation tank is communicated with a water inlet of the membrane tank through a pipeline, and a sludge discharge port is arranged at the bottom of the bidirectional flow inclined plate sedimentation tank; the gas inlet of the membrane tank is communicated with the gas outlet of the blower through a pipeline; the bottom of the membrane pool is provided with a sludge discharge port and a sewage discharge port; the produced water after being filtered by the membrane tank is pumped into a clear water tank by a water producing pump; the water outlet of the clean water tank is communicated with the water inlet of the backwashing pump through a pipeline, and the water outlet of the backwashing pump is respectively communicated with the backwashing water inlet of the membrane tank and the outside through a pipeline.
Furthermore, the separation membrane of the membrane tank adopts a gravity type pollution-resistant ceramic separation membrane.
Furthermore, a medicine inlet of the bidirectional flow inclined plate sedimentation tank is communicated with a medicine outlet of the medicine adding unit.
Further, the bidirectional flow inclined plate sedimentation tank is added with nano enhanced coagulant, and the dosage is 1 kg-10 kg/ton water.
Furthermore, ultraviolet disinfection equipment is arranged in the clear water tank.
Furthermore, valves are arranged at the sludge discharge port and the sewage discharge port.
Furthermore, the backwashing water recovery device realizes automatic control through an automatic control cabinet.
Furthermore, the separation membrane of the membrane tank is arranged by adopting a tubular membrane component, the water head of the tubular membrane component is 40-60 cm, and the backwashing period is 1 week.
The invention has the following beneficial effects:
the device has short technical process and high backwashing water treatment efficiency, and can remove more than 99.999 percent of pollutants such as turbidity, bacteria, algae and the like; the ceramic separation membrane has the characteristics of catalysis and pollution resistance, and the permeation flux can reach 150L m-2h-1The membrane pollution can be efficiently removed, the flux recovery rate can reach more than 95 percent, the equipment cleaning period is long and can reach more than 10 days, the produced water reaches the drinking water outlet standard and can be conveyed to tap water to produce water, the automation degree is high, the occupied area is small, the single equipment treatment capacity can reach 1000m3And/d or more.
The invention adopts the bidirectional flow inclined plate reactor, can increase the pretreatment effect, reduce the membrane pollution and increase the cleaning period, adopts the ceramic membrane element with the catalysis effect, has long cleaning period, stable equipment water production and large water production, can be directly transformed on the basis of the original water works process, and has low investment cost and operation cost and wide application prospect.
Drawings
FIG. 1 is a schematic view of the structure of a backwash water recovery apparatus of the present invention.
Detailed Description
For the purpose of promoting a clear understanding of the objects, aspects and advantages of the embodiments of the invention, reference will now be made in detail to the embodiments of the present disclosure, and it will be apparent to one skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the disclosure.
The exemplary embodiments of the present invention and the description thereof are provided to explain the present invention and not to limit the present invention.
Example 1
The backwashing water recovery equipment comprises a bidirectional flow inclined plate sedimentation tank 1, a membrane tank 2, a clear water tank 3, an air blower 4, a water production pump 5 and a backwashing pump 6;
a liquid inlet is arranged on the bidirectional flow inclined plate sedimentation tank 1, a water outlet of the bidirectional flow inclined plate sedimentation tank 1 is communicated with a water inlet of the membrane tank 2 through a pipeline, and a sludge discharge port is arranged at the bottom of the bidirectional flow inclined plate sedimentation tank 1; the gas inlet of the membrane tank 2 is communicated with the gas outlet of the blower 4 through a pipeline; the bottom of the membrane tank 2 is provided with a sludge discharge port and a sewage discharge port; the water produced after being filtered by the membrane tank 2 is pumped into a clear water tank 3 by a water producing pump 5; the water outlet of the clean water tank 3 is communicated with the water inlet of the backwashing pump 6 through a pipeline, and the water outlet of the backwashing pump 6 is respectively communicated with the backwashing water inlet of the membrane tank 2 and the outside through a pipeline.
The bidirectional flow inclined plate sedimentation tank 1 consists of a dosing unit and a sedimentation unit, and the dosing amount is 2 kg/ton of water; the added medicine is a nano enhanced coagulant; the separation membrane in the membrane pool 2 adopts a gravity type pollution-resistant ceramic separation membrane.
The water outlet of the membrane separation in the membrane pool 2 is realized by adopting a tubular membrane module in a gravity mode, and the water head is designed to be 50 cm; the backwashing period is set to 1 week, and the separation membrane has a catalytic function and can recover more than 98% of permeation flux under the action of the cleaning agent. The water production tank 3 is provided with ultraviolet lamp disinfection equipment. All operation processes can adopt automatic control device to realize automatic control, and the automatic control cabinet adopts software remote control, integrated to collecting APP.
Example 2
The backwashing water recovery equipment comprises a bidirectional flow inclined plate sedimentation tank 1, a membrane tank 2, a clear water tank 3, an air blower 4, a water production pump 5 and a backwashing pump 6;
a liquid inlet is arranged on the bidirectional flow inclined plate sedimentation tank 1, a water outlet of the bidirectional flow inclined plate sedimentation tank 1 is communicated with a water inlet of the membrane tank 2 through a pipeline, and a sludge discharge port is arranged at the bottom of the bidirectional flow inclined plate sedimentation tank 1; the gas inlet of the membrane tank 2 is communicated with the gas outlet of the blower 4 through a pipeline; the bottom of the membrane tank 2 is provided with a sludge discharge port and a sewage discharge port; the water produced after being filtered by the membrane tank 2 is pumped into a clear water tank 3 by a water producing pump 5; the water outlet of the clean water tank 3 is communicated with the water inlet of the backwashing water pump 6 through a pipeline, and the water outlet of the backwashing water pump 6 is communicated with the water inlet of the backwashing water of the membrane tank 2 and the outside through a pipeline respectively.
The bidirectional flow inclined plate sedimentation tank 1 consists of a dosing unit and a sedimentation unit, and the dosing amount is small and is 2 kg/ton of water;
the separation membrane in the membrane pool 2 adopts a tubular membrane component and discharges water by gravity, and the water head is designed to be 30 cm; the backwashing period is set to 1 week, and the separation membrane has a catalytic function and can recover more than 98% of permeation flux under the action of the cleaning agent. The water production tank 3 is provided with ultraviolet lamp disinfection equipment. All operation processes can adopt automatic control device to realize automatic control, and the automatic control cabinet adopts software remote control, integrated to in collecting the APP.
Comparative example 1
The backwashing water recovery equipment comprises a bidirectional flow inclined plate sedimentation tank 1, a membrane tank 2, a clear water tank 3, an air blower 4, a water production pump 5 and a backwashing pump 6;
a liquid inlet is arranged on the bidirectional flow inclined plate sedimentation tank 1, a water outlet of the bidirectional flow inclined plate sedimentation tank 1 is communicated with a water inlet of the membrane tank 2 through a pipeline, and a sludge discharge port is arranged at the bottom of the bidirectional flow inclined plate sedimentation tank 1; the gas inlet of the membrane tank 2 is communicated with the gas outlet of the blower 4 through a pipeline; the bottom of the membrane tank 2 is provided with a sludge discharge port and a sewage discharge port; the water produced after being filtered by the membrane tank 2 is pumped into a clear water tank 3 by a water producing pump 5; the water outlet of the clean water tank 3 is communicated with the water inlet of the backwashing water pump 6 through a pipeline, and the water outlet of the backwashing water pump 6 is communicated with the water inlet of the backwashing water of the membrane tank 2 and the outside through a pipeline respectively.
The bidirectional flow inclined plate sedimentation tank 1 consists of a dosing unit and a sedimentation unit, and the dosing amount is 2 kg/ton of water; the separation membrane in the membrane tank 2 adopts a commercial polyvinylidene fluoride micro-filtration membrane with a water head of 30 cm. The water producing water tank is provided with ultraviolet lamp disinfection equipment. All operation processes can adopt automatic control device to realize automatic control, and the automatic control cabinet adopts software remote control, integrated to in collecting the APP.
Comparative example 2
The backwashing water recovery equipment comprises a bidirectional flow inclined plate sedimentation tank 1, a membrane tank 2, a clear water tank 3, an air blower 4, a water production pump 5 and a backwashing pump 6;
a liquid inlet is arranged on the bidirectional flow inclined plate sedimentation tank 1, a water outlet of the bidirectional flow inclined plate sedimentation tank 1 is communicated with a water inlet of the membrane tank 2 through a pipeline, and a sludge discharge port is arranged at the bottom of the bidirectional flow inclined plate sedimentation tank 1; the gas inlet of the membrane tank 2 is communicated with the gas outlet of the blower 4 through a pipeline; the bottom of the membrane tank 2 is provided with a sludge discharge port and a sewage discharge port; the water produced after being filtered by the membrane tank 2 is pumped into a clear water tank 3 by a water producing pump 5; the water outlet of the clean water tank 3 is communicated with the water inlet of the backwashing pump 6 through a pipeline, and the water outlet of the backwashing pump 6 is respectively communicated with the backwashing water inlet of the membrane tank 2 and the outside through a pipeline.
The bidirectional flow inclined plate sedimentation tank 1 consists of a dosing unit and a sedimentation unit, the dosing amount is 40 kg/ton water, and the dosing level of a tap water plant is maintained; the separation membrane in the membrane pool 2 adopts an immersed ceramic membrane with a water head of 30 cm. The water producing tank is provided with ultraviolet lamp disinfection equipment. All operation processes can adopt automatic control device to realize automatic control, and the automatic control cabinet adopts software remote control, integrated to in collecting the APP.
TABLE 1 Equipment treatment Performance and organic matter treatment Effect
The embodiment and the comparative example show that the adoption of the bidirectional flow inclined plate reactor in the invention can increase the pretreatment effect, reduce the membrane pollution and increase the cleaning period, and the adoption of the ceramic membrane element has the advantages of catalytic effect, long cleaning period, stable equipment water production, low operation cost, large water yield and wide application prospect.
Claims (8)
1. The backwashing water recovery equipment is characterized by comprising a bidirectional flow inclined plate sedimentation tank (1), a membrane tank (2), a clear water tank (3), an air blower (4), a water production pump (5) and a backwashing pump (6);
a liquid inlet is arranged on the bidirectional flow inclined plate sedimentation tank (1), a water outlet of the bidirectional flow inclined plate sedimentation tank (1) is communicated with a water inlet of the membrane tank (2) through a pipeline, and a sludge discharge port is arranged at the bottom of the bidirectional flow inclined plate sedimentation tank (1); the gas inlet of the membrane tank (2) is communicated with the gas outlet of the blower (4) through a pipeline; the bottom of the membrane tank (2) is provided with a sludge discharge port and a sewage discharge port; the water produced after being filtered by the membrane tank (2) is pumped into the clean water tank (3) by a water producing pump (5); the water outlet of the clean water tank (3) is communicated with the water inlet of the backwashing pump (6) through a pipeline, and the water outlet of the backwashing pump (6) is respectively communicated with the backwashing water inlet of the membrane tank (2) and the outside through a pipeline.
2. The backwash water recovery equipment as claimed in claim 1, wherein the separation membrane of the membrane tank (2) is a gravity type contamination-resistant ceramic separation membrane.
3. The backwash water recovery equipment as claimed in claim 1, wherein the drug inlet of the bidirectional flow inclined plate sedimentation tank (1) is communicated with the drug outlet of the drug adding unit (7).
4. The backwash water recovery equipment as claimed in claim 3, wherein the nano enhanced coagulant is added into the bidirectional flow inclined plate sedimentation tank (1), and the addition amount is 1 kg-10 kg/ton of water.
5. The backwash water recovery apparatus as claimed in claim 1, wherein an ultraviolet disinfection device is provided in said clean water tank (3).
6. The backwash water recovery device as claimed in claim 1 wherein the sludge discharge port and the sewage discharge port are provided with valves.
7. The backwash water recovery device as claimed in claim 1 wherein the backwash water recovery device is automatically controlled by an automatic control cabinet.
8. The backwash water recovery equipment as claimed in claim 1, wherein the separation membrane of the membrane tank (2) is provided by a tubular membrane module, the water head of the tubular membrane module is 40-60 cm, and the backwash cycle is 1 week.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210576367.2A CN114772820A (en) | 2022-05-25 | 2022-05-25 | Backwashing water recovery equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210576367.2A CN114772820A (en) | 2022-05-25 | 2022-05-25 | Backwashing water recovery equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114772820A true CN114772820A (en) | 2022-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210576367.2A Pending CN114772820A (en) | 2022-05-25 | 2022-05-25 | Backwashing water recovery equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN114772820A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201143394Y (en) * | 2007-11-23 | 2008-11-05 | 大连宏博水科技有限公司 | Novel bidirectional flow tipping plate clarifying basin |
| CN102583713A (en) * | 2012-02-27 | 2012-07-18 | 同济大学 | Integrated bioaugmenting burned diatomite dynamic membrane gravity flow effluent-discharging drinking water purification process |
| CN103739124A (en) * | 2014-01-24 | 2014-04-23 | 太平洋水处理工程有限公司 | Efficient water treatment device and water treatment method |
| CN107010718A (en) * | 2017-05-22 | 2017-08-04 | 哈尔滨工业大学 | A kind of ultrafiltration biofilm reactor device of gravity-driven and the method that low temperature low ammonia nitrogen waste water is handled with it |
-
2022
- 2022-05-25 CN CN202210576367.2A patent/CN114772820A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201143394Y (en) * | 2007-11-23 | 2008-11-05 | 大连宏博水科技有限公司 | Novel bidirectional flow tipping plate clarifying basin |
| CN102583713A (en) * | 2012-02-27 | 2012-07-18 | 同济大学 | Integrated bioaugmenting burned diatomite dynamic membrane gravity flow effluent-discharging drinking water purification process |
| CN103739124A (en) * | 2014-01-24 | 2014-04-23 | 太平洋水处理工程有限公司 | Efficient water treatment device and water treatment method |
| CN107010718A (en) * | 2017-05-22 | 2017-08-04 | 哈尔滨工业大学 | A kind of ultrafiltration biofilm reactor device of gravity-driven and the method that low temperature low ammonia nitrogen waste water is handled with it |
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Application publication date: 20220722 |
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