CN109734168A - A kind of sewage-treating agent - Google Patents
A kind of sewage-treating agent Download PDFInfo
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- CN109734168A CN109734168A CN201910184497.XA CN201910184497A CN109734168A CN 109734168 A CN109734168 A CN 109734168A CN 201910184497 A CN201910184497 A CN 201910184497A CN 109734168 A CN109734168 A CN 109734168A
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Abstract
The present invention relates to a kind of sewage-treating agents, and component proportion in parts by weight is 20-25 parts of flocculant；2-5 parts of porous carrier；2-3 parts of titanium dioxide；1-2 parts of bentonite；2-5 parts of sodium salt；30-50 parts of starch；Beneficial effect is: sewage treatment flocculating agent safety and environmental protection produced by the present invention, antibacterial degradable, have it is good can flocculating effect, wherein turbidity removal rate is high, and COD removal rate is high, 30 days degradation rate height；It reduces the complexity of preparation and improves the economic benefit of production process；Whole operation process condition is mild, easily meets actual production requirement.
Description
Technical field
The invention belongs to technical field of sewage more particularly to a kind of sewage-treating agents.
Background technique
China is specified one of 13 poor-water states, the United Nations, water resources shortage.It is faced with severe water pollution again simultaneously
Problem.Water treatment technology is roughly classified into two classes: biologic treating technique and materializing strategy technology.Wherein biologic treating technique is waste water
The main technique of purification.With the continuous development of industry, environmental pollution is got worse, and requirement of the people to environment is continuously improved,
Physical method, biological method in traditional water treatment technology tend not to obtain satisfied result.
Generally, it in the sewage disposal system using the various inorganic coagulants such as aluminium salt, molysite, flocculant, such as needs to locate
The water of reason has been more than the processing capacity of clarifying basin or has floated outside since other factors cause in water wadding body to have little time to settle, and only needs
The PAM of addition 0.1-2ppm helps solidifying, can significantly improve effect of settling.Moreover, the COD of water and chromaticity index also have after processing
It is apparent to improve.
It coagulates as one of the important operation being separated by solid-liquid separation in sewage treatment, it is usually essential in sewage disposal process
A part.Compared to other water treatment technologies, flocculation treatment is more inexpensive, low power consuming and easily operated.
Flocculant is broadly divided into inorganic flocculating agent, organic flocculant and three kinds of microbial flocculant, wherein organic flocculant
Organic synthesis class and two kinds of natural polymer subclass can be divided into again.But there is degradabilities for existing natural polymer subclass flocculant
Difference, the problem that safety is low, at high cost and poor flocculating effect, so providing, one kind is highly-safe, and degradable, flocculating effect is good
Flocculant is necessary.
Currently, some sewage-treating agents, are mostly the not readily transportable preservation of liquid；While existing method is simple, former material
Material is easy to get, production cost is low, application easy to spread, but its flocculating effect and degradability are to be improved.
Summary of the invention
[technical problem]
For above-mentioned distinguishing characteristics, the present invention provides a kind of sewage-treating agent, mainly solves existing inorganic agent and is not easy to protect
It deposits, the problems such as flocculation/degradation effect is poor.
[technical solution]
To solve the above-mentioned problems, the present invention adopts the following technical scheme:
A kind of sewage-treating agent, component proportion in parts by weight be,
The flocculant is prepared by the following method and obtains:
A. cellulose crosses water cleaning；
B. cellulose is immersed in the solution that PH is 7.5-8, extracts 1-2h, crossed water and clean 2-3 times；
C. the cellulose after the completion of step B processing is placed in -5~-10 DEG C of environment and is freezed；
D. the cellulose after the completion of step C processing is taken out and is placed in the acid solution that PH is 6.5-7, impregnated, wait rise again
When to 5-10 DEG C, took out water and cleaned 2-3 times；
E. by step D cleaning after the completion of cellulose drying, be broken into it is powdered；
F. powder is placed in 0-4 DEG C of water；
G. keep temperature be 0-4 DEG C, stirring, at the same be slowly added to alkaline reagent adjust PH be 7.3-7.5 obtain it is uniform, saturating
Bright solution；
H. above-mentioned solution is added in vacuum sealing kettle, oxidant is added, is warming up to 40-50 DEG C of reaction 2-3h；
I. by step H treated solution rotating evaporation, dry.
Preferably, the sodium salt is sodium metasilicate；The porous carrier is ceramic capillary carrier.
Preferably, the flocculant is prepared by the following method and obtains:
A. cellulose carries out tentatively broken, crosses water cleaning；
B. cellulose is immersed in the water, adjusting PH is 7.5-8, extracts 1-2h, crosses water and cleans 2-3 times, dries 20min；
C. the cellulose water drenching after the completion of step B processing is placed in -5~-10 DEG C of environment and is freezed；
D. the cellulose after the completion of step C processing is taken out and is placed in the acid solution that PH is 6.5-6.8, impregnated, wait return
When temperature is to 5-10 DEG C, took out water and cleaned 2-3 times；
E. by step D cleaning after the completion of cellulose drying, be broken into it is powdered；
F. powder is placed in 0-4 DEG C of water；
G. keep temperature be 0-4 DEG C, stirring, at the same be added dropwise alkaline reagent adjust PH be 7.3-7.5 obtain it is uniform, transparent molten
Liquid；
H. above-mentioned solution is added in vacuum sealing kettle, oxidant is added, is warming up to 40-50 DEG C and is stirred to react 2-3h；
I. by step H treated solution rotating evaporation, dry；
J. step I obtained material is crossed water to rejoin PH is to stir 0.5-1h in 7.3-7.5 solution；
K. by solution rotating evaporation, drying after step J processing.
It preferably, further include poly-ferric chloride, polymer alumina；The bentonite is the double ammonium-bentonites of trimethylene base.
Preferably, the molecular formula of poly-ferric chloride: [Fe2(OH)nCl6- N] m, the molecular formula of aluminium polychloride: [Al2(OH)
nCl6- n] m,
N, m, N are integer, n 1-5, m≤10 in formula；
Double ammonium-the bentonites of trimethylene base are bis- (octadecyldimethyl the ammonium)-bentonites of trimethylene base.
Preferably, poly-ferric chloride is 5-10 parts, and polymer alumina is 3-6 parts.
Preferably, the flocculant, porous carrier, titanium dioxide, bentonite, sodium metasilicate, starch press after being mixed
Form sheet.
Preferably, the cellulose cleaning process is,
10-20min is impregnated in S1 water, is taken out；
S2 is rinsed with the salt water that concentration is 2-5%；
S3 immerses S2 treated cellulose in 0.5-1% salt water, is warming up to 20-30 DEG C, impregnates 1-2h, takes out；
S4 clear water rinses 1-2 times, submerges stirring in clear water and impregnates 0.5-1h；
S5 is rinsed 1-2 times after taking out, and is dried.
Preferably, the oxidant is sodium metaperiodate.
Preferably, the cellulose is moso bamboo, rice straw, bean dregs and straw source fiber element.
[beneficial effect]
The beneficial effects of the present invention are:
1. sewage treatment flocculating agent safety and environmental protection produced by the present invention, antibacterial degradable, have it is good can flocculating effect,
Wherein turbidity removal rate is high, and COD removal rate is high, 30 days degradation rate height；
2. reducing the complexity of preparation and improving the economic benefit of production process；
3. whole operation process condition is mild, easily meet actual production requirement.
Specific embodiment
Invention is further explained combined with specific embodiments below:
Embodiment 1
A kind of sewage-treating agent, component proportion in parts by weight be,
The flocculant is prepared by the following method and obtains:
A. cellulose crosses water cleaning；
B. cellulose is immersed in the solution that PH is 7.5, extracts 1h, crossed water and clean 2 times；
C. the cellulose after the completion of step B processing is placed in -5 DEG C of environment and is freezed；
D. the cellulose after the completion of step C processing is taken out and is placed in the acid solution that PH is 6.5, impregnated, wait rise again to 5
DEG C when, took out water clean 2 times；
E. by step D cleaning after the completion of cellulose drying, be broken into it is powdered；
F. powder is placed in 0 DEG C of water；
G. keep temperature be 0 DEG C, stirring, at the same be slowly added to alkaline reagent adjust PH be 7.3 obtain it is uniform, transparent molten
Liquid；
H. above-mentioned solution is added in vacuum sealing kettle, oxidant is added, is warming up to 40 DEG C of reaction 2h；
I. by step H treated solution rotating evaporation, dry.
Embodiment 2
A kind of sewage-treating agent, component proportion in parts by weight be,
The flocculant is prepared by the following method and obtains:
A. cellulose crosses water cleaning；
B. cellulose is immersed in the solution that PH is 8, extracts 2h, crossed water and clean 3 times；
C. the cellulose after the completion of step B processing is placed in -10 DEG C of environment and is freezed；
D. by step C processing after the completion of cellulose take out is placed in PH be 6.8 acid solution in, impregnate, wait rise again to
At 10 DEG C, took out water and cleaned 3 times；
E. by step D cleaning after the completion of cellulose drying, be broken into it is powdered；
F. powder is placed in 4 DEG C of water；
G. keep temperature be 4 DEG C, stirring, at the same be slowly added to alkaline reagent adjust PH be 7.5 obtain it is uniform, transparent molten
Liquid；
H. above-mentioned solution is added in vacuum sealing kettle, oxidant is added, is warming up to 50 DEG C of reaction 3h；
I. by step H treated solution rotating evaporation, dry.
Embodiment 3
A kind of sewage-treating agent, component proportion in parts by weight be,
The flocculant is prepared by the following method and obtains:
A. cellulose crosses water cleaning；
B. cellulose is immersed in the solution that PH is 7.8, extracts 1.5h, crossed water and clean 2.5 times；
C. the cellulose after the completion of step B processing is placed in -7 DEG C of environment and is freezed；
D. the cellulose after the completion of step C processing is taken out and is placed in the acid solution that PH is 6.7, impregnated, wait rise again to 7
DEG C when, took out water clean 2 times；
E. by step D cleaning after the completion of cellulose drying, be broken into it is powdered；
F. powder is placed in 2 DEG C of water；
G. keep temperature be 2 DEG C, stirring, at the same be slowly added to alkaline reagent adjust PH be 7.4 obtain it is uniform, transparent molten
Liquid；
H. above-mentioned solution is added in vacuum sealing kettle, oxidant is added, is warming up to 45 DEG C of reaction 2.5h；
I. by step H treated solution rotating evaporation, dry.
Embodiment 4
A kind of sewage-treating agent, component proportion in parts by weight be,
The flocculant is prepared by the following method and obtains:
A. cellulose crosses water cleaning；
B. cellulose is immersed in the solution that PH is 8, extracts 2h, crossed water and clean 3 times；
C. by step B processing after the completion of cellulose take out is placed in PH be 6.8 acid solution in, impregnate, wait rise again to
At 5-10 DEG C, took out water and cleaned 3 times；
D. by step C cleaning after the completion of cellulose drying, be broken into it is powdered；
E. powder is placed in 4 DEG C of water；
F. keep temperature be 4 DEG C, stirring, at the same be slowly added to alkaline reagent adjust PH be 7.5 obtain it is uniform, transparent molten
Liquid；
G. above-mentioned solution is added in vacuum sealing kettle, oxidant is added, is warming up to 50 DEG C of reaction 3h；
H. by step G treated solution rotating evaporation, dry.
Embodiment 5
A kind of sewage-treating agent, component proportion in parts by weight be,
The flocculant is prepared by the following method and obtains:
A. cellulose crosses water cleaning；
B. cellulose is immersed in the solution that PH is 8, extracts 2h, crossed water and clean 3 times；
C. the cellulose after the completion of step B processing is placed in -10 DEG C of environment and is freezed；
D. the cellulose taking-up after the completion of step C processing is placed in neutral solution, impregnates, when rising again to 10 DEG C, takes
Water is crossed out to clean 3 times；
E. by step D cleaning after the completion of cellulose drying, be broken into it is powdered；
F. powder is placed in 4 DEG C of water；
G. keep temperature be 4 DEG C, stirring, at the same be slowly added to alkaline reagent adjust PH be 7.5 obtain it is uniform, transparent molten
Liquid；
H. above-mentioned solution is added in vacuum sealing kettle, oxidant is added, is warming up to 50 DEG C of reaction 3h；
I. by step H treated solution rotating evaporation, dry.
Embodiment 6
A kind of sewage-treating agent, component proportion in parts by weight be,
The flocculant is prepared by the following method and obtains:
A. cellulose crosses water cleaning；
B. cellulose is immersed in the solution that PH is 8, extracts 2h, crossed water and clean 3 times；
C. the cellulose after the completion of step B processing is placed in -10 DEG C of environment and is freezed；
D. by step C processing after the completion of cellulose take out is placed in PH be 6.8 acid solution in, impregnate, wait rise again to
At 10 DEG C, took out water and cleaned 3 times；
E. by step D cleaning after the completion of cellulose drying, be broken into it is powdered；
F. powder is placed in 4 DEG C of water；
G. keep temperature be 4 DEG C, stirring, at the same be slowly added to alkaline reagent adjust PH be 7.5 obtain it is uniform, transparent molten
Liquid；
H. by step G treated solution rotating evaporation, dry.
Embodiment 7
A kind of sewage-treating agent, component proportion in parts by weight be,
The flocculant is prepared by the following method and obtains:
A. cellulose carries out tentatively broken, crosses water cleaning；
B. cellulose is immersed in the water, adjusting PH is 8, extracts 2h, crosses water and cleans 3 times, dries 20min；
C. the cellulose water drenching after the completion of step B processing is placed in -10 DEG C of environment and is freezed；
D. by step C processing after the completion of cellulose take out is placed in PH be 6.8 acid solution in, impregnate, wait rise again to
At 10 DEG C, took out water and cleaned 3 times；
E. by step D cleaning after the completion of cellulose drying, be broken into it is powdered；
F. powder is placed in 4 DEG C of water；
G. holding temperature is 4 DEG C, stirring, while alkaline reagent adjusting PH is added dropwise and obtains uniform, clear solution for 7.5；
H. above-mentioned solution is added in vacuum sealing kettle, oxidant is added, is warming up to 50 DEG C and is stirred to react 3h；
I. by step H treated solution rotating evaporation, dry；
J. step I obtained material is crossed water to rejoin PH is to stir 1h in 7.5 solution；
K. by solution rotating evaporation, drying after step J processing.
Embodiment 8
A kind of sewage-treating agent, component proportion in parts by weight be,
The flocculant is prepared by the following method and obtains:
A. cellulose carries out tentatively broken, crosses water cleaning；
B. cellulose is immersed in the water, adjusting PH is 8, extracts 2h, crosses water and cleans 3 times, dries 20min；
C. the cellulose water drenching after the completion of step B processing is placed in -10 DEG C of environment and is freezed；
D. by step C processing after the completion of cellulose take out is placed in PH be 6.8 acid solution in, impregnate, wait rise again to
At 10 DEG C, took out water and cleaned 3 times；
E. by step D cleaning after the completion of cellulose drying, be broken into it is powdered；
F. powder is placed in 4 DEG C of water；
G. holding temperature is 4 DEG C, stirring, while alkaline reagent adjusting PH is added dropwise and obtains uniform, clear solution for 7.5；
H. above-mentioned solution is added in vacuum sealing kettle, oxidant is added, is warming up to 50 DEG C and is stirred to react 3h；
I. by step H treated solution rotating evaporation, dry；
J. step I obtained material is crossed water to rejoin PH is to stir 1h in 7.5 solution；
K. by solution rotating evaporation, drying after step J processing.
Test 1: taking waste water 700mL, be averagely fitted into 7 beakers, and measuring its turbidity, COD (COD), biochemistry needs
Oxygen amount (BOD) and suspension content (SS) record data, and think that inorganic agent made from embodiment 17 is added in 7 beakers respectively
1.5mg stirs 10min, stands, and in measurement turbidity, COD, BOD and SS, calculates turbidity removal rate, COD removal rate and SS removal
Rate the results are shown in Table 1.
1 flocculating effect of table
| Group | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | Embodiment 8 |
| Turbidity removal rate % | 98.7 | 98.4 | 99.2 | 95.7 | 92.3 | 93.7 | 99.4 | 93.4 |
| COD removal rate % | 90.2 | 90.4 | 91.1 | 89.7 | 87.6 | 87.3 | 92.1 | 90.7 |
| SS removal rate % | 92.1 | 91.8 | 92.3 | 91.2 | 86.2 | 82.1 | 93.0 | 90.1 |
Test 2: after embodiment 1-8 reagent preliminary treatment, will enter in identical test liquid, respectively to 5,10,20,
40, it samples within 80 days, calculates degradation rate, the results are shown in Table 2.
2 degradation rate of table
Those skilled in the art can define, can in the case of not departing from overall spirit of the invention and design
To make the various modifications for above embodiments.It falls within the scope of protection of the present invention.Protection scheme of the invention
It is subject to claims appended hereto.
Claims (10)
1. a kind of sewage-treating agent, it is characterised in that: its component proportion in parts by weight is,
The flocculant is prepared by the following method and obtains:
A. cellulose crosses water cleaning；
B. cellulose is immersed in the solution that PH is 7.5-8, extracts 1-2h, crossed water and clean 2-3 times；
C. the cellulose after the completion of step B processing is placed in -5~-10 DEG C of environment and is freezed；
D. by step C processing after the completion of cellulose take out is placed in PH be 6.5-6.8 acid solution in, impregnate, wait rise again to
At 5-10 DEG C, took out water and cleaned 2-3 times；
E. by step D cleaning after the completion of cellulose drying, be broken into it is powdered；
F. powder is placed in 0-4 DEG C of water；
G. keep temperature be 0-4 DEG C, stirring, at the same be slowly added to alkaline reagent adjust PH be 7.3-7.5 obtain it is uniform, transparent molten
Liquid；
H. above-mentioned solution is added in vacuum sealing kettle, oxidant is added, is warming up to 40-50 DEG C of reaction 2-3h；
I. by step H treated solution rotating evaporation, dry.
2. a kind of sewage-treating agent according to claim 1, it is characterised in that: the sodium salt is sodium metasilicate；The micropore
Carrier is ceramic capillary carrier.
3. a kind of sewage-treating agent according to claim 2, it is characterised in that: the flocculant be prepared by the following method and
:
A. cellulose carries out tentatively broken, crosses water cleaning；
B. cellulose is immersed in the water, adjusting PH is 7.5-8, extracts 1-2h, crosses water and cleans 2-3 times, dries 20min；
C. the cellulose water drenching after the completion of step B processing is placed in -5~-10 DEG C of environment and is freezed；
D. by step C processing after the completion of cellulose take out is placed in PH be 6.5-6.8 acid solution in, impregnate, wait rise again to
At 5-10 DEG C, took out water and cleaned 2-3 times；
E. by step D cleaning after the completion of cellulose drying, be broken into it is powdered；
F. powder is placed in 0-4 DEG C of water；
G. holding temperature is 0-4 DEG C, stirring, while it is that 7.3-7.5 obtains uniform, clear solution that alkaline reagent, which is added dropwise, to adjust PH；
H. above-mentioned solution is added in vacuum sealing kettle, oxidant is added, is warming up to 40-50 DEG C and is stirred to react 2-3h；
I. by step H treated solution rotating evaporation, dry；
J. step I obtained material is crossed water to rejoin PH is to stir 0.5-1h in 7.3-7.5 solution；
K. by solution rotating evaporation, drying after step J processing.
4. a kind of sewage-treating agent according to claim 1, it is characterised in that:
It further include poly-ferric chloride, polymer alumina；The bentonite is the double ammonium-bentonites of trimethylene base.
5. a kind of sewage-treating agent according to claim 4, it is characterised in that:
The molecular formula of poly-ferric chloride: [Fe2(OH)nCl6-N]m, the molecular formula of aluminium polychloride: [Al2(OH)nCl6-n]m,
N, m, N are integer, n 1-5, m≤10 in formula；
Double ammonium-the bentonites of trimethylene base are bis- (octadecyldimethyl the ammonium)-bentonites of trimethylene base.
6. a kind of sewage-treating agent according to claim 4, it is characterised in that: poly-ferric chloride is 5-10 parts, polymeric oxygen
Changing aluminium is 3-6 parts.
7. a kind of sewage-treating agent according to claim 1, it is characterised in that: the flocculant, porous carrier, titanium dioxide
Pressing forms sheet after titanium, bentonite, sodium salt, starch are mixed.
8. a kind of sewage-treating agent according to claim 1, it is characterised in that: the cellulose cleaning process is,
10-20min is impregnated in S1 water, is taken out；
S2 is rinsed with the salt water that concentration is 2-5%；
S3 immerses S2 treated cellulose in 0.5-1% salt water, is warming up to 20-30 DEG C, impregnates 1-2h, takes out；
S4 clear water rinses 1-2 times, submerges stirring in clear water and impregnates 0.5-1h；
S5 is rinsed 1-2 times after taking out, and is dried.
9. a kind of sewage-treating agent according to claim 1, it is characterised in that: the oxidant is sodium metaperiodate.
10. a kind of sewage-treating agent according to claim 1, it is characterised in that: the cellulose is moso bamboo, rice straw, beans
Slag and straw source fiber element.
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| CN103951023A (en) * | 2014-04-18 | 2014-07-30 | 包头轻工职业技术学院 | Compound sewage treatment agent |
| CN103980367A (en) * | 2014-05-19 | 2014-08-13 | 浙江理工大学 | Method for preparing carboxyl cellulose flocculant |
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Application publication date: 20190510 |