CN110002631A - A kind of high phosphorus waste water membrane processing method - Google Patents
A kind of high phosphorus waste water membrane processing method Download PDFInfo
- Publication number
- CN110002631A CN110002631A CN201910313582.1A CN201910313582A CN110002631A CN 110002631 A CN110002631 A CN 110002631A CN 201910313582 A CN201910313582 A CN 201910313582A CN 110002631 A CN110002631 A CN 110002631A
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- Prior art keywords
- water
- reverse osmosis
- waste water
- processing method
- high phosphorus
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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
- C02F1/52—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
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
- C02F2303/14—Maintenance of water treatment installations
-
- 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
- C02F3/02—Aerobic 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
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
-
- 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
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/14—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
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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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of high phosphorus waste water membrane processing methods, using regular industrial water as water source, ultrafiltration, reverse osmosis and ion-exchange treatment are successively carried out to it, reaches the water quality requirement of boiler, heat supply network make-up water.The invention belongs to high phosphorus waste water membrane technologies with high salt, formulate feed water by reverse osmosis total phosphorus limit value --- 3 mg/L, front and continued dosing dephosphorization process is eliminated accordingly, and adjustment is optimized to film processing system technological parameter, producing water water quality, stability and operational efficiency are improved, satisfactory boiler and heat supply network make-up water are obtained.It in addition, high phosphorus waste water membrane processing method of the present invention, can economize on resources and the energy, reduce the pollution of environment.
Description
Technical field
The invention belongs to technical field of sewage, in particular to a kind of high phosphorus waste water membrane processing method.
Background technique
Using municipal sewage plant effluent as water source, it is back to steam power plant's cooling water after advanced treating, in water-saving and emission-reducing
Considerable economic benefit is brought simultaneously, there is important demonstration meaning.But that there are treatment effeciencies is low for conventional treatment process,
Producing water water quality is unstable or even obvious deterioration, and operation expense is high, and it is seriously polluted to also result in subsequent film processing system, produces water
The problems such as water degradation, is unable to satisfy existing water treatment and process water requirement, and particular problem is as follows:
1, biological aerated filter production water turbidity, basicity are lower, do not meet the processing feature of lime coagulation technique, clear through mechanical stirring
After the lime and iron-based flocculating agent agent-feeding treatment in clear pond, obvious deterioration is had occurred in water quality, and hardness and iron content severely exceed, seriously
Increase the burden that subsequent change hole filtering pool waited section, while energy consumption, medicine consumption and operation expense are high.
2, sewerage disposing system produces water as circulating water system, and the increase of hardness, basicity directly results in condenser
It is easy to happen the harm of fouling, and the exceeded of iron content is also easy to plate film forming in condenser tube, these can all increase condensing
Device end is poor.
3, it is heavy that ultrafiltration membrane filaments outer wall generation calcium scale, iron dirt in the chemical water treatment system of water raw water are produced with sewerage disposing system
It is long-pending, it blocks seriously, some of the contaminants penetrate ultrafiltration membrane causes reverse osmosis membrane to pollute exacerbation into production water into reverse osmosis workshop section,
Producing water water quality deteriorates.
4, processing cost is higher.Middle water is due to mostling come from sewage treatment plant, since season, weather, source etc. are a variety of
The interference of factor, variation water quality is larger, and processing technique and difficulty increase therewith.Required processing cost cost is larger, influences enterprise
The enthusiasm of water in utilization.
Summary of the invention
In view of the above problems, the object of the present invention is to provide a kind of high phosphorus waste water membrane processing method, by ultrafiltration,
Reverse osmosis and ion-exchange treatment is allowed to meet the requirement of boiler, heat supply network make-up water, improves economy and stability, saves money
Source and the energy reduce the pollution of environment.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of high phosphorus waste water membrane processing method, using regular industrial water as water source, the treatment process the following steps are included:
By regular industrial water, ultrafiltration, reverse osmosis and ion-exchange treatment are carried out successively to get arriving boiler, heat supply network make-up water；
The operating pressure of the ultrafiltration is set as 0.2Mpa-0.4Mpa, and system every operation backwash in 40 minutes is primary, when each backwash
Between be 30s-60s, after every 15 days carry out chemical enhanced backwashes (EFM), i.e., using 900ppm high concentration NaClO clean film table
Face；
Wherein, the total phosphorus of feed water by reverse osmosis is limited to not higher than 3mg/L.
Further, influent quality reverse osmosis in step E requirement further include:
Further, the reverse osmosis operating pressure is 1Mpa-1.2Mpa, and the dosing system of reverse osmosis operation is reducing agent
NaHSO3, antisludging agent and acidic cleaner.
Further, the acidic cleaner is preferably HCl solution, or is 2.0% citric acid, 1.0%Na2S2O4, 0.5% phosphorus
Acid.
Further, the reducing agent NaHSO3It is controlled by 4 times of chlorine residue dosage, controls oxidation-reduction potential < 200mV tune
Save dosing；The antisludging agent chemical feeding points are before cartridge filter, and the additional amount of antisludging agent is 3.0 ~ 5.0ppm when normal operation；For
Prevent the dense water side deposition of reverse osmosis membrane, it is reverse osmosis put into operation after, according to reverse osmosis entrance water quality situation, Plus acidic cleaning agent adjust into
Saliva pH value is in 6.5-7.5, and acid adding point is before cartridge filter.
Further, the ion-exchange treatment successively uses: strongly-acid cation exchanger → strong alkali anion exchanger
→ mixed ion exchanger.
The present invention having the beneficial effect that compared with prior art
High phosphorus waste water membrane processing method of the present invention belongs to high phosphorus waste water membrane technology with high salt, optimizes film process system
System technological parameter determines that the total phosphorus of feed water by reverse osmosis is limited to be effectively reduced front and continued dephosphorization burden and medicament not higher than 3mg/L
Consumption.
The present invention is described in detail below by way of drawings and examples.
Detailed description of the invention
Fig. 1 is the flow diagram of high phosphorus waste water membrane processing method of the present invention.
Specific embodiment
A kind of high phosphorus waste water membrane processing method is present embodiments provided, using regular industrial water as water source, the processing work
Skill the following steps are included:
By regular industrial water, ultrafiltration, reverse osmosis and ion-exchange treatment are carried out successively to get arriving boiler, heat supply network make-up water；
The operating pressure of the ultrafiltration is set as 0.2Mpa-0.4Mpa, and system every operation backwash in 40 minutes is primary, when each backwash
Between be 60s, mainly prevent particulate matter from depositing inside film wire, maintain the flux of film, conducive to protection membranous system normal fortune
Row.Chemical enhanced backwashes (EFM) is carried out after every 15 days, i.e., film surface is cleaned using the high concentration NaClO of 900ppm, is allowed to thorough
Restore original strainability.
Feed water by reverse osmosis total phosphorus limit value is 3 mg/L, is effectively reduced front and continued dephosphorization burden and reagent consumption.It is anti-to guarantee
The safe and stable operation of infiltration, the reverse osmosis influent quality requirement are as follows:
Reverse osmosis membrane operating pressure is 1-1.2 Mpa, and single branch film producing water ratio is 15%.Since reverse osmosis raw water belongs to high phosphorus height firmly
Water quality is spent, reverse osmosis operation medicine system specifically includes that reducing agent NaHSO3, antisludging agent and hydrochloric acid dosing.By reducing agent NaHSO3
It is controlled by 4 times of chlorine residue dosage, control oxidation-reduction potential < 200mV adjusts dosing；Antisludging agent chemical feeding points before cartridge filter,
The additional amount of antisludging agent is 3.0 ~ 5.0ppm when normal operation；To prevent the dense water side deposition of reverse osmosis membrane, it is reverse osmosis put into operation after, root
According to reverse osmosis entrance water quality situation, acid adding is adjusted into saliva pH value in 6.5-7.5 or so, and chemical feeding points are before cartridge filter.
The ion-exchange treatment successively uses: strongly-acid cation exchanger → strong alkali anion exchanger → hybrid ionic
Exchanger, parameter are as follows:
The reverse osmosis water inlet belongs to high phosphorus high-hardness water, and in the case that service condition is constant, water yield declines 10-
15%, operation increases 10-15%, when pressure difference increases by 30% between section, it is necessary to carry out chemical cleaning.It is high hard that reverse osmosis raw water belongs to high phosphorus
Water quality is spent, reverse osmosis membrane pollution is predominantly 0.2%HCl solution such as calcium scale, preferred chemical, and cleaning pH value is 1-2.It is standby
Select chemical are as follows: 2.0% citric acid, 1.0%Na2S2O4, 0.5% phosphoric acid.
After measured, the conductance of regular industrial water is 1089 μ S/cm, and passes through the ultrafiltration, reverse osmosis and ion exchange
Treated produces water power and leads as 25 μ S/cm, far below the standard value of 80 μ S/cm.
Claims (7)
1. a kind of high phosphorus waste water membrane processing method, using regular industrial water as water source, which is characterized in that the technique includes following
Step:
By regular industrial water, ultrafiltration, reverse osmosis and ion-exchange treatment are carried out successively to get arriving boiler, heat supply network make-up water；
The operating pressure of the ultrafiltration is set as 0.2Mpa-0.4Mpa, and system every operation backwash in 40 minutes is primary, when each backwash
Between be 30s-60s, after every 15 days carry out chemical enhanced backwashes (EFM), i.e., using 900ppm high concentration NaClO clean film table
Face；
Wherein, the total phosphorus of feed water by reverse osmosis is limited to not higher than 3mg/L.
2. high phosphorus waste water membrane processing method according to claim 1, which is characterized in that reverse osmosis water inlet water in step E
Matter requirement further include:
3. high phosphorus waste water membrane processing method according to claim 1, which is characterized in that reverse osmosis operating pressure is
1Mpa-1.2Mpa, and the dosing system of reverse osmosis operation is reducing agent NaHSO3, antisludging agent and acidic cleaner.
4. high phosphorus waste water membrane processing method according to claim 1, which is characterized in that the reducing agent NaHSO3By more than 4 times
The control of chlorine dosage, control oxidation-reduction potential < 200mV adjust dosing；The antisludging agent chemical feeding points are before cartridge filter, just
Often the additional amount of antisludging agent is 3.0 ~ 5.0ppm when operation；To prevent the dense water side deposition of reverse osmosis membrane, it is reverse osmosis put into operation after, according to
Reverse osmosis entrance water quality situation, Plus acidic cleaning agent are adjusted into saliva pH value in 6.5-7.5, and acid adding point is before cartridge filter.
5. high phosphorus waste water membrane processing method according to claim 3, which is characterized in that the acidic cleaner is that hydrochloric acid is molten
Liquid.
6. high phosphorus waste water membrane processing method according to claim 3, which is characterized in that the acidic cleaner is 2.0% lemon
Lemon acid, 1.0%Na2S2O4, 0.5% phosphoric acid.
7. high phosphorus waste water membrane processing method according to claim 1, which is characterized in that the ion-exchange treatment is successively adopted
With: strongly-acid cation exchanger → strong alkali anion exchanger → mixed ion exchanger.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018103463179 | 2018-04-18 | ||
| CN201810346317 | 2018-04-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110002631A true CN110002631A (en) | 2019-07-12 |
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ID=67172809
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910313048.0A Pending CN110002676A (en) | 2018-04-18 | 2019-04-18 | A kind of sewage plant utilized based on sub-prime and steam power plant's water circulation use technique |
| CN201910313582.1A Pending CN110002631A (en) | 2018-04-18 | 2019-04-18 | A kind of high phosphorus waste water membrane processing method |
| CN201910313105.5A Pending CN110342727A (en) | 2018-04-18 | 2019-04-18 | A kind of municipal sewage is used for the treatment process of steam power plant's cooling circulating water |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910313048.0A Pending CN110002676A (en) | 2018-04-18 | 2019-04-18 | A kind of sewage plant utilized based on sub-prime and steam power plant's water circulation use technique |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910313105.5A Pending CN110342727A (en) | 2018-04-18 | 2019-04-18 | A kind of municipal sewage is used for the treatment process of steam power plant's cooling circulating water |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110845047A (en) * | 2019-12-13 | 2020-02-28 | 深圳市能源环保有限公司 | Reclaimed water softening and recycling treatment system and method suitable for waste incineration power plant |
| CN111573900B (en) * | 2020-05-29 | 2021-12-14 | 中国水利水电科学研究院 | Dynamic regulation and control system and method for concentration multiple of circulating cooling water tower |
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- 2019-04-18 CN CN201910313105.5A patent/CN110342727A/en active Pending
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| CN110002676A (en) | 2019-07-12 |
| CN110342727A (en) | 2019-10-18 |
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Application publication date: 20190712 |