CN109650610A - A method of utilizing nitrogen and P elements in water in coagulation-electrochemical techniques removal - Google Patents
A method of utilizing nitrogen and P elements in water in coagulation-electrochemical techniques removal Download PDFInfo
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- CN109650610A CN109650610A CN201910036511.1A CN201910036511A CN109650610A CN 109650610 A CN109650610 A CN 109650610A CN 201910036511 A CN201910036511 A CN 201910036511A CN 109650610 A CN109650610 A CN 109650610A
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- water
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Classifications
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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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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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
- 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
- C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
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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
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- 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
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
A kind of method using nitrogen and P elements in water in coagulation-electrochemical techniques removal disclosed by the invention, specifically implement according to the following steps: molecular sieve progress preliminary treatment being added in middle water to be processed and obtains water body A, electrode material is inserted into water body A, it is powered after reaction, it is filtered after generating flocculation sedimentation, obtains water body B；Ferrous sulfate reaction flocculation sedimentation again is added in water body B, obtains eliminating the water body of nitrogen and phosphorus element after reaction.In removal of the invention in water nitrogen and phosphorus element method; it is combined using addition molecular sieve, ferrous sulfate and electrode; nitrogen and phosphorus element in being removed by coagulation-electrochemical techniques in water; regeneration is carried out with this centering water; it is not only easy to operate; it is low in cost, and to the removal rate of nitrogen P elements height, it is effectively protected environment.
Description
Technical field
The invention belongs to sewerage disposing technical fields, and in particular to a kind of using in water in coagulation-electrochemical techniques removal
The method of nitrogen and P elements.
Technical background
In order to solve the problems, such as shortage of water resources, the regeneration of middle water becomes particularly important, also for we provide maximums
Resource.Existing sewerage disposing method mainly active sludge, physico-chemical process and membrane processing method.
Activated sludge process mainly includes SBR method, CASS method and MSBR method.Although the variation of activated sludge process water, water quality
Adaptable and sewage treating efficiency is high, and the effect of denitrogenation dephosphorizing is good, but the technology automatic controlling level requires high, water outlet water
Matter is not high.Its basic handling mode of physico-chemical process is activated carbon adsorption or coagulating sedimentation, compared to traditional two stage treatment technology, work
Skill technology mature, improves water standard, but take up a large area, sludge yield is less, water quality balance adjusts difficult, water outlet
Water quality is poor.Membrane processing method (contact oxidation method, Gas biological filter, MBR method, bio-disc system) investment is big, biomembrane
Updating decision needs to regularly replace, there are also in treatment process aeration and noise problem have it is to be solved.
Meanwhile containing a large amount of nitrogen and phosphorus element in middle water, traditional processing method is difficult to be simple and efficient nitrogen, phosphorus is first
Completely, therefore, developing one kind, simply, in efficient removal list, the method for P elements are of far-reaching significance in water for element removal.
Molecular sieve has uniform cellular structure and hole diameter, big specific surface area, macropore volume and suction as adsorbent
The features such as attached capacity, good hydrothermal stability, relies primarily on the ammonia nitrogen in intermolecular dispersion force and a large amount of ducts removal water.With
Other adsorbents are compared, and absorption property is good, still there is very high adsorbance at a higher temperature, but its cyclical stability and persistently
Property aspect still leave some problems.
Ferrous sulfate flocculation technique, although usage is easy, when ferrous sulfate coagulation removes P elements, ferrous ion meeting
It is reacted with the coloring matter in water and generates the organoiron compound for being difficult to flocculating setting, water treatment efficiency is made to be deteriorated.Cause
This cannot be single use in sewerage disposing technology.
Summary of the invention
The purpose of the present invention is to provide a kind of sides using nitrogen and P elements in water in coagulation-electrochemical techniques removal
Method, solves complex process present in existing sewerage disposing method, nitrogen and the low problem of P elements removal rate.
The technical scheme adopted by the invention is that a kind of utilize nitrogen and P elements in water in coagulation-electrochemical techniques removal
Method, specific steps are as follows:
Molecular sieve is added in step 1 in middle water to be processed, reacts 5-10min；Molecular sieve after filtering out reaction obtains water
Body A；
Step 2 carries out electrochemical treatments to water body A
It is inserted into electrode material in water body A, is powered after reaction, then flocculation sedimentation 5-10min, filtering obtains after removing precipitating
Water body B；
Ferrous sulfate is added in step 3 in water body B, obtains eliminating the water body of nitrogen and phosphorus element after reaction.
The features of the present invention also characterized in that:
The additional amount of molecular sieve is the 20%~50% of middle water quality in step 1.
The electrode material being inserted into step 2 is any one in aluminium electrode, iron electrode, stainless steel electrode and copper electrode.
Be powered in step 2 reaction time be 20~60min, power-on voltage be 10~30V.
Step 3 specifically:
Ferrous sulfate is added in water body B, the additional amount of ferrous sulfate is the 0.8%~2% of water body B mass, stirs 5-
It is filtered after 10min, flocculation sedimentation 5-10min, obtains the water body for eliminating nitrogen and phosphorus element.
The beneficial effects of the present invention are:
1. of the invention is combined using addition molecular sieve, ferrous sulfate and electrode, using in coagulation-electrochemical techniques removal
In water the method for nitrogen P elements solve taken up a large area present in existing sewerage disposing method, complex process, investment it is big and
The low problem of ammonia nitrogen removal frank.Experimental results show that the ammonia-nitrogen content in water body drops to 0.05mg/L, ammonia by 2.5mg/L
Nitrogen removal efficiency reaches as high as 98%；Phosphorus element content drops to 0.03mg/L by 0.2mg/L, and tp removal rate reaches 85%.
2. molecular sieve has suction-operated, the ammonia in intermolecular dispersion force and a large amount of ducts removal water is relied primarily on
Nitrogen, the presence of calcium ion can have certain inhibiting effect to the removal of ammonia nitrogen in water, and have facilitation to phosphatic removal.
3. generating flocculation by addition ferrous sulfate in water body, there is preferable effect in decoloration, dephosphorization, together
When ferrous sulfate can be efficiently used, protect environment.
Specific embodiment
The present invention is described in detail With reference to embodiment.
Embodiment 1
Take water in 200mL that 100g molecular sieve is added, obtains after molecular sieve is handled by preliminary in the beaker of 500mL
The water body A of processing；Aluminium electrode is inserted into water body A as conductive material, in the case where voltage is 20v to preliminary treatment
Water body A is electrolysed, flocculation sedimentation 10min after energization 40min；Further to remove the nitrogen and phosphorus element in water body, then
4g ferrous sulfate is added and stirs 5min in water sample, is filtered after flocculation sedimentation 5min, obtains denitrogenating and the water after phosphorus.
Embodiment 2
Take water in 200mL that 100g molecular sieve is added, obtains after molecular sieve is handled by preliminary in the beaker of 500mL
The water body A of processing；Stainless steel electrode is inserted into water body A as conductive material, in the case where voltage is 30v to through molecular sieve
Processed water body is electrolysed, flocculation sedimentation 8min after energization 50min；In order to preferably remove the nitrogen and phosphorus element in water body,
It weighs 3g ferrous sulfate and stirs 5min in water sample, be filtered after flocculation sedimentation 5min, obtain denitrogenating and the water after phosphorus.
Embodiment 3
Water in 200mL is taken 40g molecular sieve to be weighed in the simple container of production, at molecular sieve in the beaker of 500mL
The water body A by preliminary treatment is obtained after reason；Iron electrode is inserted into water body A as conductive material, the case where voltage is 10v
Under the water body A of preliminary treatment is electrolysed, flocculation sedimentation 5min after energization 60min；Further to remove in water body
Nitrogen and phosphorus element, then be added 1.6g ferrous sulfate 10min is stirred in water sample, be filtered, obtain after flocculation sedimentation 5min
It goes to denitrogenate and the water body after phosphorus.
Embodiment 4
Take water in 200mL that 80g molecular sieve is added, is obtained after molecular sieve is handled by tentatively locating in the beaker of 500mL
The water body A of reason；Aluminium electrode is inserted into water body A as conductive material, in the case where voltage is 20v to the water of preliminary treatment
Body A is electrolysed, flocculation sedimentation 10min after energization 20min；Further to remove the nitrogen and phosphorus element in water body, then plus
Enter 4g ferrous sulfate and stir 5min in water sample, be filtered after flocculation sedimentation 10min, obtains denitrogenating and the water after phosphorus.
Based on molecular sieve as adsorbent, there are uniform cellular structure and hole diameter, big specific surface area, macropore volume
And the features such as adsorption capacity, good hydrothermal stability, rely primarily on the ammonia in intermolecular dispersion force and a large amount of ducts removal water
Nitrogen.For the present invention by water in molecular sieve, ferrous sulfate combination electrochemistry flocculation treatment, treatment process is simple and convenient pollution-free, has
While nitrogen and phosphorus element removal rate carries out regeneration with this centering water in water in the promotion of effect ground, so that the entirety of sewerage disposing
Cost reduces and water quality is more excellent, and is effectively protected environment.
For now, on the market there are no occurring combining using addition molecular sieve, ferrous sulfate and electrode, using mixed
The method that solidifying-electrochemical techniques combine nitrogen and phosphorus element in water in removal.
Claims (5)
1. a kind of method using nitrogen and P elements in water in the removal of coagulation-electrochemical techniques, which is characterized in that specifically according to
Lower step is implemented:
Molecular sieve is added in step 1 in middle water to be processed, reacts 5-10min；Molecular sieve after filtering out reaction obtains water body A；
Step 2 carries out electrochemical treatments to the water body A
It is inserted into electrode material in the water body A, is powered after reaction, then flocculation sedimentation 5-10min, filtering obtains after removing precipitating
Water body B；
Ferrous sulfate is added in the water body B in step 3, obtains eliminating the water body of nitrogen and phosphorus element after reaction.
2. a kind of method using nitrogen and P elements in water in coagulation-electrochemical techniques removal according to claim 1,
It is characterized in that, the electrode material being inserted into step 2 is any one in aluminium electrode, iron electrode, stainless steel electrode and copper electrode.
3. a kind of method using nitrogen and P elements in water in coagulation-electrochemical techniques removal according to claim 1,
It is characterized in that, the time for the reaction that is powered described in step 2 is 20~60min, and power-on voltage is 10~30V.
4. a kind of method using nitrogen and P elements in water in coagulation-electrochemical techniques removal according to claim 1,
It is characterized in that, step 3 specifically:
Ferrous sulfate is added in water body B, the additional amount of the ferrous sulfate is the 0.8%~2% of water body B mass, stirs 5-
It is filtered after 10min, flocculation sedimentation 5-10min, obtains the water body for eliminating nitrogen and phosphorus element.
5. a kind of method using nitrogen and P elements in water in coagulation-electrochemical techniques removal according to claim 1,
It is characterized in that, the additional amount of molecular sieve described in step 1 is the 20%~50% of middle water quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910036511.1A CN109650610A (en) | 2019-01-15 | 2019-01-15 | A method of utilizing nitrogen and P elements in water in coagulation-electrochemical techniques removal |
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| CN201910036511.1A CN109650610A (en) | 2019-01-15 | 2019-01-15 | A method of utilizing nitrogen and P elements in water in coagulation-electrochemical techniques removal |
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Citations (6)
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|---|---|---|---|---|
| US20070278158A1 (en) * | 2006-06-01 | 2007-12-06 | Green Shelter Innovations Limited | Wastewater treatment system and method |
| CN103922534A (en) * | 2014-04-28 | 2014-07-16 | 南京大学 | Reclaimed water treatment method based on magnetic resin adsorption coupled electric adsorption |
| US20160039698A1 (en) * | 2014-08-08 | 2016-02-11 | Wisconsin Alumni Research Foundation | Method to remediate effluents containing metals complexed with organic and/or inorganic species |
| CN106242129A (en) * | 2016-08-05 | 2016-12-21 | 罗依依 | A kind of municipal sewage plant discharge water is put forward mark method by one-level B to one-level A |
| CN106800356A (en) * | 2016-12-22 | 2017-06-06 | 波鹰(厦门)科技有限公司 | A kind of advanced treatment of wastewater regeneration device based on biochemical and electrolysis tech |
| CN108264171A (en) * | 2017-12-29 | 2018-07-10 | 浙江环耀环境建设有限公司 | Treated sewage reusing processing unit and its treatment process |
-
2019
- 2019-01-15 CN CN201910036511.1A patent/CN109650610A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070278158A1 (en) * | 2006-06-01 | 2007-12-06 | Green Shelter Innovations Limited | Wastewater treatment system and method |
| CN103922534A (en) * | 2014-04-28 | 2014-07-16 | 南京大学 | Reclaimed water treatment method based on magnetic resin adsorption coupled electric adsorption |
| US20160039698A1 (en) * | 2014-08-08 | 2016-02-11 | Wisconsin Alumni Research Foundation | Method to remediate effluents containing metals complexed with organic and/or inorganic species |
| CN106242129A (en) * | 2016-08-05 | 2016-12-21 | 罗依依 | A kind of municipal sewage plant discharge water is put forward mark method by one-level B to one-level A |
| CN106800356A (en) * | 2016-12-22 | 2017-06-06 | 波鹰(厦门)科技有限公司 | A kind of advanced treatment of wastewater regeneration device based on biochemical and electrolysis tech |
| CN108264171A (en) * | 2017-12-29 | 2018-07-10 | 浙江环耀环境建设有限公司 | Treated sewage reusing processing unit and its treatment process |
Non-Patent Citations (1)
| Title |
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| 赵玉华等: "13X分子筛强化混凝法处理微污染水的试验", 《沈阳建筑大学学报》 * |
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