AU2021101219A4 - A Bio-enzyme Flocculant for Black-odour Water Treatment and the Preparation Method Thereof - Google Patents
A Bio-enzyme Flocculant for Black-odour Water Treatment and the Preparation Method Thereof Download PDFInfo
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- AU2021101219A4 AU2021101219A4 AU2021101219A AU2021101219A AU2021101219A4 AU 2021101219 A4 AU2021101219 A4 AU 2021101219A4 AU 2021101219 A AU2021101219 A AU 2021101219A AU 2021101219 A AU2021101219 A AU 2021101219A AU 2021101219 A4 AU2021101219 A4 AU 2021101219A4
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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
- C02F1/54—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
- 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
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- 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
- C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
-
- 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
-
- 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
-
- 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
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
-
- 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
- C02F2303/02—Odour removal or prevention of malodour
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a bio-enzyme flocculant for black-odour water treatment and a
preparation method thereof. Specifically, it comprises the following components in parts by
weight: 5-10 parts of bio-enzyme, 5-10 parts of amphoteric polyacrylamide, 60-75 parts of
polyaluminum chloride, 10-20 parts of chitosan, 15-35 parts of acrylamide grafted starch, 50
65 parts of polyferric sulfate, 10-25 parts of activated carbon and 1-5 parts of oxidant. The
invention has the advantages of good removal effect, low cost and environmental protection.
FIGURES
1/1
COD change trend in black-odour water*,
Embodiment 1 Embodiment 2 Comparative =m)(m Comparative
Embodiment 1 Embodiment 2
100
90
80
70
60
24H 48H 72H
Figure 1 A schematic diagram of COD change trend in black-odour water.
BOD change trend in black-odour water<-,
* Embodiment1 Embodiment2 -.. r. Comparative am)(maCompartive
Embodiment1 Embodiment2
100
90
so 70
60
24H 48H 72H
Figure 2 A schematic diagram of BOD change trend in black-odour water.
Description
FIGURES 1/1
COD change trend in black-odour water*,
Embodiment 1 Embodiment 2 Comparative =m)(m Comparative Embodiment 1 Embodiment 2
100
90
80
70
60 24H 48H 72H
Figure 1 A schematic diagram of COD change trend in black-odour water.
BOD change trend in black-odour water<-,
* Embodiment1 Embodiment2 -.. r. Comparative am)(maCompartive Embodiment1 Embodiment2
100
90
so 70
60 24H 48H 72H
Figure 2 A schematic diagram of BOD change trend in black-odour water.
A Bio-enzyme Flocculant for Black-odour Water Treatment and the Preparation
Method Thereof
The invention belongs to the technical field of water treatment, and specifically
describes a bio-enzyme flocculant for efficient treatment of black-odour water bodies
and the reparation method thereof.
Flocculant precipitation is a widely used method to treat industrial wastewater. By
adding flocculants to wastewater, suspended solids can be effectively removed and
dissolved chemical oxygen demand (COD) and biological oxygen demand (BOD) can
be effectively decreased, thus achieving the purpose of purifying wastewater. At
present, polymeric flocculants are mainly divided into inorganic polymer flocculants,
such as polyaluminum and polyferric; natural polymer flocculants, such as chitin and
modified starch; synthetic polymeric flocculants, such as polyacrylamide. Due to the
high price of polyacrylamide, many improvements over the years have been aimed at
improving polyacrylamide or using multiple flocculants to prepare composite
flocculants. However, the sewage treatment effect of the existing composite
flocculants is not ideal, and the use process is complicated. In addition, there are some
flocculants, which are expensive, difficult to degrade, and pollute the environment
due to their own raw materials.
The object of the invention is to provide a bio-enzyme flocculant for black-odour
water treatment and a preparation method thereof. The beneficial effects of the
invention are good removal effect, low cost and environmental protection.
The technical scheme adopted by the invention is described as follows.
Specifically, the bio-enzyme flocculant for black-odour water treatment comprising
the following components in parts by weight: 5-10 parts of bio-enzyme, 5-10 parts of
amphoteric polyacrylamide, 60-75 parts of polyaluminum chloride, 10-20 parts of
chitosan, 15-35 parts of acrylamide grafted starch, 50-65 parts of polyferric sulfate,
-25 parts of activated carbon, 1-5 parts of oxidant and 0.5-2 parts of enzyme
stabilizer.
Further, the optimal dosage can be 5 parts of bio-enzyme, 5 parts of amphoteric
polyacrylamide, 60 parts of polyaluminum chloride, 10 parts of chitosan, 15 parts of
acrylamide grafted starch, 50 parts of polyferric sulfate, 10 parts of activated carbon
and 1 part of oxidant.
Furthermore, the optimal dosage also can be 10 parts of bio-enzyme, 10 parts of
amphoteric polyacrylamide, 75 parts of polyaluminum chloride, 20 parts of chitosan,
parts of acrylamide grafted starch, 65 parts of polyferric sulfate, 25 parts of
activated carbon and 5 parts of oxidant.
Moreover, the bio-enzyme is the fermentation broth of cellulase and a - amylase. The
specific preparation method is to use cellulose as substrate and carry out equal
proportion mixed fermentation cultivation at 25-30°C for 4-6 days.
Specifically, the preparation method of bio-enzyme flocculant for black-odour water
treatment is composed of the following steps.
1) The activated carbon and chitosan are crushed, modified with alkali, washed and
dried to obtain aggregates.
2) Mixing amphoteric polyacrylamide, polyaluminum chloride, acrylamide grafted
starch, polyferric sulfate and oxidant uniformly to prepare additives.
3) The aggregates and additives are stirred and mixed under the condition of 60°C-80
°C. Then the pH value is adjusted to 7.0-8.0 after uniform stirring. The bio-enzyme
and the enzyme stabilizer are added in sequence, and after cooling, the material is
screened and prepared.
Figure 1 is a schematic diagram of COD change trend in black-odour water.
Figure 2 is a schematic diagram of BOD change trend in black-odour water.
The present invention will be described in detail with reference to following specific
embodiments.
Preparation of experimental water
After collecting black-odour water from rivers, a single-layer gauze filter is used to
remove large floating objects and suspended solids. The specification of test water
sample is 500mL/ bottle. After sampling, let the water stand for 1 hour for later use.
Embodiment 1
In this Embodiment, the composition of bio-enzyme flocculant by weight comprises 5
parts of bio-enzyme, 5 parts of amphoteric polyacrylamide, 60 parts of polyaluminum
chloride, 10 parts of chitosan, 15 parts of acrylamide grafted starch, 50 parts of
polyferric sulfate, 10 parts of activated carbon and 1 part of oxidant. Specifically, the
activated carbon and chitosan are crushed, modified with alkali, washed and dried to
obtain aggregates. Then mixing amphoteric polyacrylamide, polyaluminum chloride,
acrylamide grafted starch, polyferric sulfate and oxidant uniformly to prepare
additives. The aggregates and additives are stirred and mixed at 60°C. After cooling,
the bio-enzyme flocculant is screened and prepared. The prepared bio-enzyme
flocculant is then added to wastewater. The prepared bio-enzyme flocculant was
added to the water. After 24h, 48h and 72h, the COD and BOD content in the water is
detected respectively. The result is shown in Table 1.
Table 1
Embodiment 1 Removal rate of COD(%) Removal rate of BOD(%) 24h 80.4 78.9 48h 91.4 85.2 72h 93.2 93.4 Embodiment 2
In this Embodiment, the composition of bio-enzyme flocculant by weight comprises
parts of bio-enzyme, 10 parts of amphoteric polyacrylamide, 75 parts of
polyaluminum chloride, 20 parts of chitosan, 35 parts of acrylamide grafted starch, 65
parts of polyferric sulfate, 25 parts of activated carbon and 5 parts of oxidant.
Specifically, the activated carbon and chitosan are crushed, modified with alkali,
washed and dried to obtain aggregates. Then mixing amphoteric polyacrylamide, polyaluminum chloride, acrylamide grafted starch, polyferric sulfate and oxidant uniformly to prepare additives. The aggregates and additives are stirred and mixed at
°C . After cooling, the bio-enzyme flocculant is screened and prepared. The
prepared bio-enzyme flocculant is then added to wastewater. The prepared bio
enzyme flocculant was added to the water. After 24h, 48h and 72h, the COD and
BOD content in the water is detected respectively. The result is shown in Table 2.
Table 2
Embodiment 2 Removal rate of COD(%) Removal rate of BOD(%) 24h 84.8 82.4 48h 92.8 91.5 72h 97.5 96.1
Embodiment 3
In this Embodiment, the composition of bio-enzyme flocculant by weight comprises 7
parts of bio-enzyme, 7 parts of amphoteric polyacrylamide, 70 parts of polyaluminum
chloride, 15 parts of chitosan, 30 parts of acrylamide grafted starch, 60 parts of
polyferric sulfate, 20 parts of activated carbon and 3 parts of oxidant. Specifically, the
activated carbon and chitosan are crushed, modified with alkali, washed and dried to
obtain aggregates. Then mixing amphoteric polyacrylamide, polyaluminum chloride,
acrylamide grafted starch, polyferric sulfate and oxidant uniformly to prepare
additives. The aggregates and additives are stirred and mixed at 70°C. After cooling,
the bio-enzyme flocculant is screened and prepared. The prepared bio-enzyme
flocculant is then added to wastewater. The prepared bio-enzyme flocculant was
added to the water. After 24h, 48h and 72h, the COD and BOD content in the water is
detected respectively. The result is shown in Table 3.
Table 3
Embodiment 3 Removal rate of COD(%) Removal rate of BOD(%) 24h 82.6 80.4 48h 92.1 87.5 72h 94.6 95.1
Figure 1 is a schematic diagram of COD change trend in black-odour water. Figure 2
is a schematic diagram of BOD change trend in black-odour water. Combined with
the above data, it can be seen that the bio-enzyme flocculant for efficient treatment of
black-odour water in the technical scheme of the present invention is obviously
superior to the existing bio-enzyme flocculant, and has the advantages of good COD
and BOD removal effect, low cost, environmental protection, etc. Compared with the
prior art, the black-odour water after treatment is neither black nor smelly, meeting
the standard.
The above is only a preferred embodiment of the present invention and does not limit
the present invention in any form. Any simple modification, equivalent substitution
and improvement made to the above embodiments according to the technical essence
of the present invention shall be included in the scope of the technical scheme of the
present invention.
Claims (5)
1. A bio-enzyme flocculant for black-odour water treatment, characterized by
comprising the following components in parts by weight: 5-10 parts of bio-enzyme, 5
parts of amphoteric polyacrylamide, 60-75 parts of polyaluminum chloride, 10-20
parts of chitosan, 15-35 parts of acrylamide grafted starch, 50-65 parts of polyferric
sulfate, 10-25 parts of activated carbon, 1-5 parts of oxidant and 0.5-2 parts of
enzyme stabilizer.
2. The bio-enzyme flocculant for black-odour water treatment as stated in Claim 1,
characterized in that one optimal dosage is 5 parts of bio-enzyme, 5 parts of
amphoteric polyacrylamide, 60 parts of polyaluminum chloride, 10 parts of chitosan,
parts of acrylamide grafted starch, 50 parts of polyferric sulfate, 10 parts of
activated carbon and 1 part of oxidant.
3. The bio-enzyme flocculant for black-odour water treatment as stated in Claim 1,
characterized in that another optimal dosage is 10 parts of bio-enzyme, 10 parts of
amphoteric polyacrylamide, 75 parts of polyaluminum chloride, 20 parts of chitosan,
parts of acrylamide grafted starch, 65 parts of polyferric sulfate, 25 parts of
activated carbon and 5 parts of oxidant.
4. The bio-enzyme flocculant for black-odour water treatment according to any one of
Claims 1-3, characterized in that the bio-enzyme is the fermentation broth of cellulase
and a - amylase. The specific preparation method is to use cellulose as substrate and
then carry out equal proportion mixed fermentation cultivation at 25-30°C for 4-6
days.
5. The preparation method of bio-enzyme flocculant for black-odour water treatment
according to any one of Claims 1-3, characterized by comprising the following steps.
1) The activated carbon and chitosan are crushed, modified with alkali, washed and
dried to obtain aggregates.
2) Mixing amphoteric polyacrylamide, polyaluminum chloride, acrylamide grafted
starch, polyferric sulfate and oxidant uniformly to prepare additives.
3) The aggregates and additives are stirred and mixed under the condition of 60°C-80
°C. Then the pH value is adjusted to 7.0-8.0 after uniform stirring. The bio-enzyme
and the enzyme stabilizer are added in sequence, and after cooling, the material is
screened and prepared.
FIGURES 09 Mar 2021
1/1 2021101219
Figure 1 A schematic diagram of COD change trend in black-odour water.
Figure 2 A schematic diagram of BOD change trend in black-odour water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2021101219A AU2021101219A4 (en) | 2021-03-09 | 2021-03-09 | A Bio-enzyme Flocculant for Black-odour Water Treatment and the Preparation Method Thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2021101219A AU2021101219A4 (en) | 2021-03-09 | 2021-03-09 | A Bio-enzyme Flocculant for Black-odour Water Treatment and the Preparation Method Thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2021101219A4 true AU2021101219A4 (en) | 2021-05-06 |
Family
ID=75714270
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2021101219A Ceased AU2021101219A4 (en) | 2021-03-09 | 2021-03-09 | A Bio-enzyme Flocculant for Black-odour Water Treatment and the Preparation Method Thereof |
Country Status (1)
| Country | Link |
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| AU (1) | AU2021101219A4 (en) |
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2021
- 2021-03-09 AU AU2021101219A patent/AU2021101219A4/en not_active Ceased
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| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |