CN110255691A - The method for removing iron ion in boiler of power plant flushing waste water - Google Patents
The method for removing iron ion in boiler of power plant flushing waste water Download PDFInfo
- Publication number
- CN110255691A CN110255691A CN201910535045.1A CN201910535045A CN110255691A CN 110255691 A CN110255691 A CN 110255691A CN 201910535045 A CN201910535045 A CN 201910535045A CN 110255691 A CN110255691 A CN 110255691A
- Authority
- CN
- China
- Prior art keywords
- waste water
- sodium hydroxide
- boiler
- iron ion
- added
- 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
Classifications
-
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/62—Heavy metal compounds
- C02F1/64—Heavy metal compounds of iron or manganese
-
- 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
- C02F2001/007—Processes including a sedimentation step
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)
- Removal Of Specific Substances (AREA)
Abstract
The present invention relates to technical field of waste water processing, are a kind of methods for removing iron ion in boiler of power plant flushing waste water, carry out by the following method: adopting iron ion content in water using analysis method measurement power plant boiler flushing waste water；Addition amount of sodium hydroxide needed for determining iron ion in removal boiler flushing waste water according to the iron ion content of measurement；Total sodium hydroxide will be added to be dissolved in 1m3 water, obtain sodium hydroxide solution, sodium hydroxide solution is added in boiler flushing waste water pond, recycle the waste water for having added sodium hydroxide solution with pump；Termination of pumping makes to have added the sediment free settling after sodium hydroxide solution in wastewater disposal basin, obtains iron ion content supernatant liquor up to standard.During being rinsed present invention efficiently solves boiler a large amount of waste water for generating can not emission problem, ensured that later period Power Plant preliminary operation is gone on smoothly, while can recycle after a large amount of iron ions processing in waste water, saving water resource.This method is easy to operate, high treating effect.
Description
Technical field
The present invention relates to technical field of waste water processing, are a kind of methods for removing iron ion in boiler of power plant flushing waste water.
Background technique
Power plant will be rinsed boiler in ignition of the boiler early period, and boiler during the rinsing process, can generate big in a short time
Waste water is measured, the pond that general power plant can hold waste water is few, and capacity is also little, and a large amount of waste water of boiler discharge will soon incite somebody to action
These ponds are piled, while Industry Waste ditch is also possible to be piled.In recent years, industrial water pollution event takes place frequently, to people's
Living environment causes great threat, with Public environmental attitude continuous improvement and the limitation to discharge of wastewater index both at home and abroad
Standard is increasingly stringenter, and industrial wastewater is untreated to be forbidden to discharge outward, will be seriously affected when industrial wastewater nowhere discharges
The operation of relevant device.
Contain a large amount of iron ion in boiler flushing waste water, although iron is the basic element for constituting organism, iron
If excessive waste water penetrates into underground, meeting polluted underground water, and then crops and people's lives water are polluted, seriously affected
People's production and life.
Summary of the invention
The present invention provides a kind of methods of iron ion in removal boiler of power plant flushing waste water, overcome the above-mentioned prior art
Deficiency, can effectively solve in current boiler of power plant flushing waste water containing a large amount of iron ions and generate a large amount of waste water can not arrange
The problem of putting.
The technical scheme is that being realized by following measures: in a kind of removal boiler of power plant flushing waste water iron from
The method of son carries out by the following method: the first step, adopts iron ion in water using analysis method measurement power plant boiler flushing waste water
Content；Second step, sodium hydroxide needed for determining iron ion in removal boiler flushing waste water according to the iron ion content of measurement add
Enter amount, the sodium hydroxide total amount of addition is obtained with addition amount of sodium hydroxide and boiler flushing waste water pond total Water, wherein 1L boiler
0.08 gram to 0.14 gram sodium hydroxide is added in flushing waste water；Third step will be added total sodium hydroxide and be dissolved in 1m3 water,
Sodium hydroxide solution is obtained, sodium hydroxide solution is added in boiler flushing waste water pond, makes to have added sodium hydroxide solution with pump
Waste water is recycled；4th step, termination of pumping make to have added the sediment free settling after sodium hydroxide solution in wastewater disposal basin, obtain iron
Ion concentration supernatant liquor up to standard.
Here is the further optimization and/or improvements to invention technology described above scheme:
The waste water circulation time for having added sodium hydroxide solution in above-mentioned boiler flushing waste water is 10h to 14h.
In above-mentioned 4th step, the sediment generated in waste water after addition sodium hydroxide solution is hydroxide precipitating.
The above-mentioned hydroxide precipitating free settling time added after sodium hydroxide solution in wastewater disposal basin is 22h to 26h.
During being rinsed present invention efficiently solves boiler a large amount of waste water for generating can not emission problem, ensured later period electricity
Brand-name computer group preliminary operation is gone on smoothly, while can be recycled after a large amount of iron ion processing in waste water, be saved water resource.This method
Easy to operate, iron ion removing rate is up to 99% or more in waste water.
Specific embodiment
The present invention is not limited by the following examples, can determine according to the technique and scheme of the present invention with actual conditions specific
Embodiment.It is previously mentioned various chemical reagent and chemical article in the present invention unless otherwise specified, is public in the prior art
Know common chemical reagent and chemical article；Percentage in the present invention does not have specified otherwise such as, is mass percent；This hair
It is the aqueous solution that solvent is water if the solution in bright is without specified otherwise.
The present invention will be further described below with reference to examples:
Embodiment 1: the method for iron ion in the removal boiler of power plant flushing waste water carries out by the following method: the first step uses
Water analysis method measures iron ion content in power plant boiler flushing waste water；Second step is determined according to the iron ion content of measurement
Addition amount of sodium hydroxide needed for iron ion in boiler flushing waste water is removed, with addition amount of sodium hydroxide and boiler flushing waste water pond
Total Water obtains the sodium hydroxide total amount of addition, wherein 0.08 gram to 0.14 gram sodium hydroxide is added in 1L boiler flushing waste water；
Third step will be added total sodium hydroxide and be dissolved in 1m3 water, obtains sodium hydroxide solution, pot is added in sodium hydroxide solution
In furnace flushing waste water pond, recycle the waste water for having added sodium hydroxide solution with pump；4th step, termination of pumping make to have added hydroxide
Sediment free settling after sodium solution in wastewater disposal basin obtains iron ion content supernatant liquor up to standard.
In the present invention, water analysis method is measured according to GB/T 14427-2017.
In the present invention, sodium hydroxide is conventionally known alkali.
The present invention, by the method for the addition sodium hydroxide in boiler of power plant flushing waste water, makes using piece alkali as water treatment agent
Sediment free settling in wastewater disposal basin, so that the removal rate of iron ion reaches 99% in boiler of power plant flushing waste water, by processing
Boiler flushing waste water afterwards can recycle, and can sufficiently solve the problems, such as that boiler flushing waste water nowhere discharges.
In the present invention, the reaction that sodium hydroxide is added in boiler of power plant flushing waste water is as follows:
(1)NaOH→Na+ + OH-
(2)Fe2+ + 2OH-→Fe (OH)2↓
4Fe(OH)2+ O2 + 2H2O→4Fe (OH)3↓
Embodiment 2: as the optimization of above-described embodiment, the waste water circulation time of sodium hydroxide solution has been added in boiler flushing waste water
For 10h to 14h.
Embodiment 3: it as the optimization of above-described embodiment, in the 4th step, is added and is generated in waste water after sodium hydroxide solution
Sediment is hydroxide precipitating.
Embodiment 4: as the optimization of above-described embodiment, the hydroxide precipitating after sodium hydroxide solution in wastewater disposal basin has been added
The free settling time is 22h to 26h.
Embodiment 5: the first step, adopting water using analysis method and measuring iron ion content in boiler flushing waste water is 3.32g/L；The
Two steps take ten clean beakers, are separately added into the waste water water sample of 1L, then be separately added into 0.06g, 0.07g, 0.08g, 0.09g,
After 0.10g, 0.11g, 0.12g, 0.13g, 0.14g sodium hydroxide, stood after being then stirred to water sample in ten beakers
22h takes supernatant liquor to carry out moisture analysis experiment, determines that sodium hydroxide optimal addn is 0.08g/L according to iron ion content；
Sodium hydroxide needed for iron ion in removal boiler flushing waste water is dissolved in 1m3 water by third step, then that sodium hydroxide is molten
Liquid is added in wastewater disposal basin, and having added the waste water circulation time of sodium hydroxide solution is 10h；4th step, termination of pumping stand 22h, measure useless
Iron ion content is 0.042 g/L in the supernatant liquor of pond.
Iron ion content supernatant liquor up to standard is obtained according to embodiment 5, supernatant liquor is detected, wherein iron ion removing
Rate reaches 99.31%.
Embodiment 6: the first step, adopting water using analysis method and measuring iron ion content in boiler flushing waste water is 5.49g/L；The
Two steps determine that sodium hydroxide optimal addn is 0.13 g/L according to iron ion content；Third step rinses removal boiler useless
Sodium hydroxide needed for iron ion is dissolved in 1m3 water in water, and then sodium hydroxide solution is added in wastewater disposal basin, has added hydrogen-oxygen
The waste water circulation time for changing sodium solution is 12h；4th step, termination of pumping make to have added the sediment after sodium hydroxide solution in wastewater disposal basin from
By settling for 24 hours, measuring iron ion content in wastewater disposal basin supernatant liquor is 0.049 g/L.
Iron ion content supernatant liquor up to standard is obtained according to embodiment 6, supernatant liquor is detected, wherein iron ion is far low
The iron ion limitation 0.5g/L in recycling standard.
In conclusion during being rinsed present invention efficiently solves boiler a large amount of waste water for generating can not emission problem, protect
Hinder later period Power Plant preliminary operation to go on smoothly, while can have been recycled after a large amount of iron ion processing in waste water, saves water money
Source.This method is easy to operate, and iron ion removing rate is up to 99% or more in waste water.
The above technical features constitute embodiments of the present invention, can basis with stronger adaptability and implementation result
Actual needs increases and decreases non-essential technical characteristic, to meet the needs of different situations.
Claims (5)
1. a kind of method of iron ion in removal boiler of power plant flushing waste water, it is characterised in that carry out by the following method: first
Step adopts iron ion content in water using analysis method measurement power plant boiler flushing waste water；Second step contains according to the iron ion of measurement
Amount determines addition amount of sodium hydroxide needed for iron ion in removal boiler flushing waste water, is rinsed with addition amount of sodium hydroxide and boiler
Wastewater disposal basin total Water obtains the sodium hydroxide total amount of addition, wherein 0.08 gram to 0.14 gram hydrogen is added in 1L boiler flushing waste water
Sodium oxide molybdena；Third step will be added total sodium hydroxide and be dissolved in 1m3 water, sodium hydroxide solution obtained, by sodium hydroxide solution
It is added in boiler flushing waste water pond, recycles the waste water for having added sodium hydroxide solution with pump；4th step, termination of pumping make to add
Sediment free settling after sodium hydroxide solution in wastewater disposal basin obtains iron ion content supernatant liquor up to standard.
2. the method for iron ion in removal boiler of power plant flushing waste water according to claim 1, it is characterised in that boiler punching
It washes in waste water and the waste water circulation time of sodium hydroxide solution has been added to be 10h to 14h.
3. the method for iron ion in removal boiler of power plant flushing waste water according to claim 1 or claim 2, it is characterised in that the 4th step
In, the sediment generated in waste water after addition sodium hydroxide solution is hydroxide precipitating.
4. the method for iron ion in removal boiler of power plant flushing waste water according to claim 1 or 2, it is characterised in that add
The hydroxide precipitating free settling time after sodium hydroxide solution in wastewater disposal basin is 22h to 26h.
5. the method for iron ion in removal boiler of power plant flushing waste water according to claim 3, it is characterised in that added hydrogen
The hydroxide precipitating free settling time after sodium hydroxide solution in wastewater disposal basin is 22h to 26h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910535045.1A CN110255691A (en) | 2019-06-20 | 2019-06-20 | The method for removing iron ion in boiler of power plant flushing waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910535045.1A CN110255691A (en) | 2019-06-20 | 2019-06-20 | The method for removing iron ion in boiler of power plant flushing waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110255691A true CN110255691A (en) | 2019-09-20 |
Family
ID=67919653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910535045.1A Pending CN110255691A (en) | 2019-06-20 | 2019-06-20 | The method for removing iron ion in boiler of power plant flushing waste water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110255691A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012241259A (en) * | 2011-05-23 | 2012-12-10 | Babcock Hitachi Kk | System for chemical cleaning within boiler unit |
| CN109368857A (en) * | 2018-11-13 | 2019-02-22 | 高密天福家纺有限公司 | A kind of harmless treatment device and technique of iron and steel pickling waste liquid |
-
2019
- 2019-06-20 CN CN201910535045.1A patent/CN110255691A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012241259A (en) * | 2011-05-23 | 2012-12-10 | Babcock Hitachi Kk | System for chemical cleaning within boiler unit |
| CN109368857A (en) * | 2018-11-13 | 2019-02-22 | 高密天福家纺有限公司 | A kind of harmless treatment device and technique of iron and steel pickling waste liquid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Jin et al. | Micro-electrolysis technology for industrial wastewater treatment | |
| CN101618892B (en) | Recovery and comprehensive utilization method of heavy metals in stainless steel pickling wastewater sludge | |
| CN102173547B (en) | Resource recycling process for nickel-containing sludge in electroplating enterprises | |
| CN102351349A (en) | Treatment method for high-stability complexing heavy metal waste water | |
| CN105254061A (en) | Treatment method of beneficiation wastewater | |
| CN105399187B (en) | A kind of method of recycling steel wire rope pickle liquor | |
| CN101122034A (en) | Method for extracting high-grade metal zinc powder from zinc-containing material | |
| CN109160581A (en) | Determine the methods and applications of the electrolysis time of electrochemical treatments high ammonia-nitrogen wastewater with high salt | |
| CN101372746A (en) | Copper resource cyclic regeneration method in manufacture process | |
| CN107828965B (en) | Method for separating and recovering cobalt and manganese in cobalt-manganese waste | |
| CN104178630A (en) | Treatment method of cupriferous sludge | |
| CN102267770B (en) | Method for removing lead and zinc elements in ferrous chloride acidic waste water | |
| CN106277430A (en) | A kind of fracturing outlet liquid being applicable to gas well processes and circulation utilization method | |
| CN110255691A (en) | The method for removing iron ion in boiler of power plant flushing waste water | |
| CN105347445A (en) | Method for removing micropollutants in water by activating peroxysulphate through iron electrode | |
| CN203768158U (en) | Copper-containing wastewater treatment system | |
| CN107059011A (en) | The ferric trichloride etching solution regeneration device and method of cupric, nickel and chromium | |
| CN106000238B (en) | The processing unit of hardly degraded organic substance in a kind of removal waste water | |
| CN202796087U (en) | Transferring tank for treatment of nuclear waste water | |
| CN104724806B (en) | A kind of polymerization zinc-base aluminum ferric chloride flocculant and preparation method thereof | |
| CN103014782A (en) | Magnesium removal method in zinc electrolysis process | |
| CN104843957A (en) | Method for comprehensively treating waste hydrochloric acid and alkaline sludge generated in steel wire rope processing process | |
| CN206266366U (en) | A kind of processing equipment of heavy-metal contaminated soil wastewater eluting | |
| CN110438351A (en) | A kind of rare earth impurities separation method | |
| CN212076674U (en) | Nickel ammine complexing waste liquid pretreatment device |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190920 |
|
| RJ01 | Rejection of invention patent application after publication |