CN105668712A - Eutrophicated water dephosphorization filler and method thereof - Google Patents
Eutrophicated water dephosphorization filler and method thereof Download PDFInfo
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- CN105668712A CN105668712A CN201610115226.5A CN201610115226A CN105668712A CN 105668712 A CN105668712 A CN 105668712A CN 201610115226 A CN201610115226 A CN 201610115226A CN 105668712 A CN105668712 A CN 105668712A
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- water
- iron filings
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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
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4676—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electroreduction
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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
- C02F1/46—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
-
- 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
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
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- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Electrochemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention provides an eutrophicated water dephosphorization method with the advantages that certain removal effects on TP, DTP, TN, DTN, NH3-N and COD in micro-polluted water are achieved; the total phosphorus content of obtained dephosphorized water is less than 0.05mg/L, and meets a type-III water quality standard of the environmental quality standards for surface water (GB3838-2002), the dephosphorization effect reaches 85.7 percent, and the total iron content is less than 0.3mg/L and meets the standard requirement of the hygienic standard for drinking water (GB5749-2006). Eutrophicated water dephosphorization filler provided by the invention adopts raw materials, including scrap iron, copper scale, rotten wood, which are all wastes, and is low in cost and economically feasible, and therefore the method and the filler have wide application prospect in the aspects of treating the micro-polluted water such as river water and lake water, and the like.
Description
Technical field
The present invention relates to eutrophication water scrubbing technology, particularly relate to a kind of eutrophic water dephosphorization filler and method thereof.
Background technology
The general eutrophication of China's water body, in water, nitrogen P elements is higher, and water transparency declines, and blue algae bloom even occurs, has a strong impact on function of water body and urban water environmental quality.
The improvement of eutrophication water, it is critical only that the removal of water Middle nutrition elemental nitrogen phosphorus, but tradition is inhaled the denitrification dephosphorization techniques such as phosphorus be suitable only for the water quality of the higher concentrations such as sanitary sewage such as nitration denitrification, the good oxygen excess of polyP bacteria anaerobic phosphorus release, for eutrophication water poor effect.
Improvement to the phosphorous source water of micro-pollution, most employing Mixing enhancement+, reinforced deposition technology, intensive filtration technology etc., as " Liang Yuanfei. micro-polluted raw purified treatment research [D]. Guangdong: Ji'nan University, 2010 ", " Su Zhaobin. Zhang Shifang. Sun Wei etc. micro-pollution Eutrophic Source Water purified treatment test [J]. water purification technology, 2002, 21 (3): 10-12 " dispensing in water etc. is utilized to make water quality reaching standard, in the face of the great threat that ecological environment is caused by the eutrophication of serious pollution of waterhead and the water standard day by day improved and water body, the process of micro-polluted source water phosphorus will be a trend, but current dephosphorization technique still suffers from deficiency, though these treatment technologies can make water quality reaching standard, but cost is bigger, and labor intensive material resources, and utilizing the material such as iron filings, activated carbon that the improvement of micro-pollution eutrophication water is increasingly subject to the concern of people in recent years, such material can as artificial swamp substrate and reactor filler etc.
Summary of the invention
It is an object of the invention to provide the eutrophic water dephosphorization filler of a kind of Cheap highly effective and method thereof.
In order to achieve the above object, one aspect of the present invention provides a kind of eutrophic water dephosphorization filler, and it is mixed by iron filings, copper scale and wood flour, and each constituent mass ratio is, iron filings: copper scale: rotten wood=5-20:1:0.4-0.6.
Second aspect, the invention provides a kind of eutrophic water phosphorus removing method, it is characterised in that: comprise the following steps,
S1, mixes iron filings, copper scale with corruption wood, and wherein, each constituent mass ratio is, iron filings: copper scale: rotten wood=5-20:1:0.4-0.6, obtains filler;
S2, the filler obtained by step S1 is filled in irrigation canals and ditches, is injected in irrigation canals and ditches by pending eutrophic water, and wherein, it is after 100-200g, 6-10h that every 1000mL water is correspondingly arranged iron filings quality, obtains dephosphorization water.
The invention has the beneficial effects as follows: eutrophic water phosphorus removing method provided by the invention, to TP, DTP, TN, DTN, NH in micro-polluted water3-N and COD all has certain removal effect, the dephosphorization water total phosphorus content obtained is lower than 0.05mg/L, reach " water environment quality standard " (GB3838-2002) Group III water standard, phosphor-removing effect reaches 85.7%, total iron content, lower than 0.3mg/L, reaches " drinking water sanitary standard " (GB5749-2006) standard-required; Eutrophic water dephosphorization filler provided by the invention, raw materials used iron filings, copper scale, rotten wood are garbage, and cheap, economically feasible, therefore this technology has a extensive future in micro-polluted water treatment such as river, lake water etc.
Accompanying drawing explanation
Fig. 1 is tp removal rate-time plot that embodiment 1 obtains;
Fig. 2 is tp removal rate-time plot that embodiment 2 obtains;
Fig. 3 is tp removal rate-time plot that embodiment 3 obtains;
Fig. 4 is concentration of iron-time plot that embodiment 4 obtains.
Detailed description of the invention
One aspect of the present invention provides a kind of eutrophic water dephosphorization filler, and it is mixed by iron filings, copper scale and wood flour, and each constituent mass ratio is, iron filings: copper scale: rotten wood=5-20:1:0.4-0.6.
When waste iron filing, copper scrap bits and corruption wood are immersed in eutrophic water, it may occur that the micro-electrolysis reaction of inside and outside two aspects. Waste iron filing itself is iron-carbon alloy, owing to ferrum and carbon electromotive force have notable difference in electrolyte solution, can form many small galvanic elements inside iron filings; It addition, the copper in copper scrap bits can form numerous galvanic element with the waste iron filing of surrounding, accelerating the corrosion of waste iron filing, can there is reduction reaction in Organic substance, also can obtain electronics generation reduction reaction on copper scale surface on iron filings surface. The galvanic interaction occurred is as follows:
In neutral and alkaline conditions: O2+2H2O+4e=4OH-
Phosphorus in water is had certain adsorption by rotten wood; Simultaneously at anode, iron salt exists with ionic condition, and the phosphate radical of iron ion and the dissolved reacts; Pending eutrophic water pH value is 7.39-7.73, after cathode reaction, iron salt exists with the form of gel state, having higher adsorption-flocculation, it is rolled up, mainly through charge neutrality, adsorption bridging and flco, the effect swept and is gone down by phosphorus containg substances flocculating sedimentation in micro-polluted source water water; Thus reaching the purpose of micro-polluted source water dephosphorization.
Preferably, described iron filings: copper scale: wood flour=10:1:0.5.
Preferably, in described iron filings, the weight/mass percentage composition of carbon is 1.5-4%, iron filings width 2-10mm, and < 2mm, copper scale is of a size of wide 2-10mm, thickness < 2mm to thickness.
Preferably, the wooden maximum length and width of described corruption or height are of a size of 20-200mm, and specific surface area is 20-60cm2/g。
Second aspect, the invention provides a kind of eutrophic water phosphorus removing method, it is characterised in that: comprise the following steps,
S1, mixes iron filings, copper scale with corruption wood, and wherein, each constituent mass ratio is, iron filings: copper scale: rotten wood=5-20:1:0.4-0.6, obtains filler;
S2, the filler obtained by step S1 is filled in irrigation canals and ditches, is injected in irrigation canals and ditches by pending eutrophic water, and wherein, it is after 100-200g, 6-10h that every 1000mL water is correspondingly arranged iron filings quality, obtains dephosphorization water.
Preferably, the dephosphorization water total phosphorus content that described step S2 obtains is lower than 0.05mg/L, and total iron content is lower than 0.3mg/L.
Below in conjunction with specific embodiment, eutrophic water dephosphorization filler of the present invention and method thereof are described further.
In following example, pending eutrophic water takes from Shahu Lake, Wuhan City, pH value is 7.39-7.73, dissolved oxygen (DO) is 5.02-6.97mg/L, total phosphorus (TP) is 1.01-1.25mg/L, total nitrogen (TN) is 1.88-2.40mg/L, and ammonia nitrogen (NH3-N) concentration is 1.82-2.10mg/L; Total ferrum is 0.239-0.255mg/L.
Embodiment 1
Iron filings are mixed according to the mass ratio of 5:1,10:1,20:1 respectively with copper scale, obtains filler;
Being filled in beaker by filler, injected in beaker by pending eutrophic water 1000mL, wherein, it is 180g that every 1000mL water is correspondingly arranged iron filings quality, and test the total phosphorus concentration change curve over time is as shown in Figure 1.
As shown in Figure 1, when ferrum copper ratio is during for 5:1, along with the growth in response time, though phosphor-removing effect is increasing, but all not less than 30%; When ferrum copper ratio is during for 20:1, phosphor-removing effect is more than 30%, but clearance when total tp removal rate is lower than 120min when 150min, and after 180min, total tp removal rate is almost without growth trend; When ferrum copper ratio is during for 10:1, along with the growth in response time, phosphor-removing effect increases gradually, and the situation that phosphor-removing effect reduces does not occur. Therefore adding ferrum copper in the ratio of 10:1 is the optimum condition that Zero-valent Iron light electrolysis removes Phosphorus From Micropolluted Water Source experiment.
Embodiment 2
Iron filings are mixed according to the mass ratio of 10:1 with copper scale, obtains filler;
Being filled in beaker by filler, injected in beaker by pending eutrophic water 1000mL, wherein, it is 120g, 150g and 180g that every 1000mL water is correspondingly arranged iron filings quality respectively, and test the total phosphorus concentration change curve over time is as shown in Figure 2.
As shown in Figure 2, after adding copper scale with the ratio of 10:1, growth over time, each group experiment phosphor-removing effect all increases, and three groups of phosphor-removing effects all reach more than 90%; But 180g ferrum 18g copper is after reaction 6 hours, and TP concentration is 0.165mg/L, reaches " water environment quality standard " (GB3838-2002) Group III water standard, and phosphor-removing effect reaches 85.7%; All the other two groups are followed successively by 64.8% and 76.1%, and total phosphorus concentration is followed successively by 0.405mg/L and 0.275mg/L. Therefore the best dephosphorization optimum condition is waste iron filing 180g/L, and add copper scale with the mass ratio of 10:1.
Embodiment 3
Weighing 120g waste iron filing 3 parts respectively, be placed in 1000mL beaker, be sequentially added into 0g, 0.5g, 1g corruption wood, be subsequently adding 1000mL water, test the total phosphorus concentration change curve over time is as shown in Figure 3.
From the figure 3, it may be seen that under same experiment condition, three's phosphor-removing effect all increases along with the growth in response time; When not adding rotten wood, after reaction 210min, phosphor-removing effect is up to 28%; When rotten wooden amount is 1.0g, after reaction 210min, phosphor-removing effect is but not up to 20%; When rotten wooden amount be 0.5g, response time is 30min, phosphor-removing effect is 17.2%, and when reaction lasts till 60min, phosphor-removing effect reaches 25%, and total tp removal rate of now 0.5g corruption wood is higher than 0.0g and 0.5g corruption wood clearance after reaction 210min. 0.5g corruption wood after reaction 210min total tp removal rate up to 48.8%. In test, the volume of 1g corruption wood is more than the volume of 0.5g corruption wood, though this can increase the rotten wood adsorption to phosphorus, but is likely to hinder the carrying out of beaker primary cells reaction.Comprehensive each side factor, it is determined that adding 0.5g corruption wood is the optimum condition that Zero-valent Iron light electrolysis removes the experiment of Phosphorus From Micropolluted Water Source.
Embodiment 4
Prepare following filler, 50g iron filings, 100g iron filings, 200g iron filings, 120g iron filings and 120g copper scale, 150g iron filings and 150g copper scale, 180g iron filings and 180g copper scale respectively;
Being placed in 1000mL beaker by above-mentioned filler respectively, be subsequently adding 1000mL water, test the total phosphorus concentration change curve over time is as shown in Figure 4.
As shown in Figure 4, in water sample, total concentration of iron increases over and increases, and when being reacted to sometime, in water sample, iron particle concentration reaches maximum, and added waste iron filing quality is more big, reaches total concentration of iron maximum required time more short; Continuing passage over time, in water sample, iron particle flocculation, makes total concentration of iron in water sample slowly decline; When ferrum copper mixes addition water sample with the ratio of 10:1, very fast owing to reacting, concentration of iron can reach maximum in 1 hour, and iron particle starts flocculation subsequently, and its concentration is also gradually reduced; When processing water sample with the waste iron filing of different quality, the quality starting affiliated ferrum is more big, and final iron particle concentration is more little. Under this test dephosphorization optimum condition, after reaction 6h, total iron content is below " drinking water sanitary standard " (GB5749-2006) standard-required 0.3mg/L.
The foregoing is only the better embodiment of the present invention, not in order to limit invention, all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (6)
1. an eutrophic water dephosphorization filler, it is characterised in that: it is mixed by iron filings, copper scale and wood flour, and each constituent mass ratio is, iron filings: copper scale: rotten wood=5-20:1:0.4-0.6.
2. eutrophic water dephosphorization filler as claimed in claim 1, it is characterised in that: described iron filings: copper scale: wood flour=10:1:0.5.
3. eutrophic water dephosphorization filler as claimed in claim 1, it is characterised in that: in described iron filings, the weight/mass percentage composition of carbon is 1.5-4%, iron filings width 2-10mm, and < 2mm, copper scale is of a size of wide 2-10mm, thickness < 2mm to thickness.
4. eutrophic water dephosphorization filler as claimed in claim 1, it is characterised in that: the wooden maximum length and width of described corruption or height are of a size of 20-200mm, and specific surface area is 20-60cm2/g。
5. an eutrophic water phosphorus removing method, it is characterised in that: comprise the following steps,
S1, mixes iron filings, copper scale with corruption wood, and wherein, each constituent mass ratio is, iron filings: copper scale: rotten wood=5-20:1:0.4-0.6, obtains filler;
S2, the filler obtained by step S1 is filled in irrigation canals and ditches, is injected in irrigation canals and ditches by pending eutrophic water, and wherein, it is after 120-180g, 6-10h that every 1000mL water is correspondingly arranged iron filings quality, obtains dephosphorization water.
6. eutrophic water phosphorus removing method as claimed in claim 5, it is characterised in that: the dephosphorization water total phosphorus content that described step S2 obtains is lower than 0.05mg/L, and total iron content is lower than 0.3mg/L.
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| CN201610115226.5A CN105668712A (en) | 2016-03-01 | 2016-03-01 | Eutrophicated water dephosphorization filler and method thereof |
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| CN201610115226.5A CN105668712A (en) | 2016-03-01 | 2016-03-01 | Eutrophicated water dephosphorization filler and method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110240252A (en) * | 2019-06-19 | 2019-09-17 | 深圳瑞赛环保科技有限公司 | A kind of secondary phosphorous remover and its application method |
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| CN105060411A (en) * | 2015-07-29 | 2015-11-18 | 江苏大学 | Internal electrolysis-electric flocculation method for processing phosphor-containing wastewater |
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2016
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| CN2701852Y (en) * | 2004-04-30 | 2005-05-25 | 杨静 | Vertical sewage treatment plant |
| EP1813579A1 (en) * | 2006-01-30 | 2007-08-01 | Blue Water Technologies, Inc. | Tertiary treatment system and method involving metal salt reagents |
| CN101823792A (en) * | 2009-03-06 | 2010-09-08 | 中国地质大学（北京） | Device, system and method for vertical multilevel soil permo-treatment of sewage and mixed fillers |
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Non-Patent Citations (1)
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| CN110240252A (en) * | 2019-06-19 | 2019-09-17 | 深圳瑞赛环保科技有限公司 | A kind of secondary phosphorous remover and its application method |
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Application publication date: 20160615 |