CN113415876A - Scale remover for leachate anaerobic system and preparation method thereof - Google Patents
Scale remover for leachate anaerobic system and preparation method thereof Download PDFInfo
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- CN113415876A CN113415876A CN202110722616.XA CN202110722616A CN113415876A CN 113415876 A CN113415876 A CN 113415876A CN 202110722616 A CN202110722616 A CN 202110722616A CN 113415876 A CN113415876 A CN 113415876A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 57
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000005260 corrosion Methods 0.000 claims abstract description 25
- 230000007797 corrosion Effects 0.000 claims abstract description 25
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims abstract description 21
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims abstract description 21
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims abstract description 21
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims abstract description 20
- YDONNITUKPKTIG-UHFFFAOYSA-N [Nitrilotris(methylene)]trisphosphonic acid Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CP(O)(O)=O YDONNITUKPKTIG-UHFFFAOYSA-N 0.000 claims abstract description 19
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims abstract description 17
- BAERPNBPLZWCES-UHFFFAOYSA-N (2-hydroxy-1-phosphonoethyl)phosphonic acid Chemical compound OCC(P(O)(O)=O)P(O)(O)=O BAERPNBPLZWCES-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229920001444 polymaleic acid Polymers 0.000 claims abstract description 16
- 239000003112 inhibitor Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 7
- 239000002244 precipitate Substances 0.000 claims description 7
- DAJSVUQLFFJUSX-UHFFFAOYSA-M sodium;dodecane-1-sulfonate Chemical compound [Na+].CCCCCCCCCCCCS([O-])(=O)=O DAJSVUQLFFJUSX-UHFFFAOYSA-M 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 abstract description 3
- 239000002253 acid Substances 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 239000000149 chemical water pollutant Substances 0.000 abstract description 2
- 239000002270 dispersing agent Substances 0.000 abstract description 2
- 230000001376 precipitating effect Effects 0.000 abstract description 2
- 229960001484 edetic acid Drugs 0.000 abstract 3
- 238000009280 upflow anaerobic sludge blanket technology Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011011 black crystal Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/14—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
- C02F5/145—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus combined with inorganic substances
-
- 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
- C02F2103/06—Contaminated groundwater or leachate
-
- 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
- C02F2303/08—Corrosion inhibition
-
- 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
- C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Microbiology (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Detergent Compositions (AREA)
Abstract
The invention relates to the technical field of treatment of landfill leachate, in particular to a scale remover for an anaerobic system of the leachate and a preparation method thereof, which comprises the following raw materials, by weight, 5-15 parts of hydrochloric acid, 1-5 parts of citric acid, 1-6 parts of EDTA (ethylene diamine tetraacetic acid), 0.4-3.5 parts of aminotrimethylene phosphonic acid, 0.5-3.5 parts of a corrosion inhibitor, 0.3-0.6 part of sodium dodecyl sulfate, 0.9-1.8 parts of sodium hexametaphosphate and 45-180 parts of water; the hydrochloric acid, the citric acid, the EDTA and the amino trimethylene phosphonic acid are used in a matching manner, so that the cleaning of the pipe network and the interior of the UASB pool can be accelerated, the removal of water scale is facilitated, the descaling time is shortened, and the descaling rate is effectively improved; the corrosion inhibitor combining hydroxyethylidene diphosphonic acid and polymaleic acid is used for effectively preventing the corrosion of the acid scale remover on the surface of equipment in the scale removing process; the dispersing agent combined by the sodium dodecyl sulfate and the sodium hexametaphosphate can effectively avoid the water scale after stripping from agglomerating and precipitating, so that the water scale after stripping is prevented from blocking a pipe network, and potential safety hazards are avoided.
Description
Technical Field
The invention relates to the technical field of treatment of landfill leachate, in particular to a scale remover for a leachate anaerobic system and a preparation method thereof.
Background
During the stacking and burying process of garbage, due to the biochemical degradation effects of compaction, fermentation and the like, a high-concentration liquid with organic or inorganic components is generated under the seepage action of precipitation and underground water, and the high-concentration liquid is called as garbage leachate, also called as leachate. Factors influencing the generation of percolate are many, and mainly include rainfall condition of a garbage stacking and burying area, the property and the composition of garbage, seepage-proofing treatment condition of a landfill site, hydrogeological conditions of the site and the like.
High suspended matters, salt content, alkalinity, slightly-dissolved salts, heavy metal ions and the like in leachate enter an UASB (upflow anaerobic sludge blanket) pool to carry out anaerobic comprehensive reaction, COD (chemical oxygen demand) forms a large amount of alkalinity in the degradation process, the PH value is increased, in addition, factors such as temperature rise and the like are added, the stable condition of the slightly-dissolved salts is broken, countless black crystal nuclei are rapidly separated out and grow into crystal grains, and finally extremely hard black crystals are formed to block a pipe network to destroy the basic condition of stable anaerobic reaction; in the cleaning process, peeled scale can be deposited in the pipeline, and potential safety hazards such as pipeline blockage, local overheating and the like exist due to the limitation of the diameter of the pipeline and the limitation of a bend and the like.
Disclosure of Invention
The invention mainly solves the technical problems that: the descaling agent for the leachate anaerobic system and the preparation method thereof have good descaling effect and are convenient for smooth discharge of ions after descaling.
In order to solve the main technical problems, the following technical scheme is adopted:
a scale remover for a leachate anaerobic system comprises the following raw materials in parts by weight:
5-15 parts of hydrochloric acid
1-5 parts of citric acid
1-6 parts of EDTA
0.4-3.5 parts of aminotrimethylene phosphonic acid
0.5-3.5 parts of corrosion inhibitor
0.3-0.6 part of sodium dodecyl sulfate
0.9 to 1.8 portions of sodium hexametaphosphate
45-180 parts of water
Preferably, the corrosion inhibitor comprises 0.3-2 parts of hydroxyethylidene diphosphonic acid and 0.2-1.5 parts of polymaleic acid.
Preferably, the scale remover for the leachate anaerobic system as claimed in claim 1, wherein the part ratio of the sodium dodecyl sulfate to the sodium hexametaphosphate is 1: 3.
Preferably, the descaling agent for leachate anaerobic systems according to claim 1, wherein the hydrochloric acid is 12 parts, the citric acid is 4 parts, the aminotrimethylene phosphonic acid is 2.5 parts, the EDTA is 4 parts, the hydroxyethylidene diphosphonic acid is 1.6 parts, the polymaleic acid is 0.8 part, the sodium dodecyl sulfate is 0.5 part, the sodium hexametaphosphate is 1.5 parts, and the water is 135 parts.
A preparation method of a descaling agent for a leachate anaerobic system comprises the following steps:
s1: putting water into a container, heating to 60-75 ℃, then sequentially stirring citric acid, aminotrimethylene phosphonic acid, EDTA, a corrosion inhibitor, sodium dodecyl sulfate and sodium hexametaphosphate until no precipitate exists, and cooling to room temperature for later use;
s2: and (4) adding hydrochloric acid into the solution prepared in the step (S1), and uniformly stirring to obtain the descaling agent.
Preferably, the heating in S1 is performed by using a jacket heat source.
Compared with the prior art, the invention has the following advantages:
(1) the hydrochloric acid, the citric acid, the EDTA and the amino trimethylene phosphonic acid are used in a matched manner, so that the cleaning of a pipe network and the interior of a UASB (upflow anaerobic sludge blanket) tank can be accelerated, the removal of water scales is facilitated, the descaling time is shortened, and the descaling rate is effectively improved.
(2) The corrosion inhibitor combining hydroxyethylidene diphosphonic acid and polymaleic acid is used for effectively preventing the corrosion of the acid scale remover on the surface of equipment in the scale removing process.
(3) The dispersing agent combined by the sodium dodecyl sulfate and the sodium hexametaphosphate can effectively avoid the water scale after stripping from agglomerating and precipitating, so that the water scale after stripping is prevented from blocking a pipe network, and potential safety hazards are avoided.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more readily understand the advantages and features of the present invention, and to clearly and unequivocally define the scope of the present invention.
The performance of the detergents of examples 1-4 were tested, respectively, by the following methods: each example adopts 3 beakers, and 200ml of the descaling agent in each example is added respectively; selecting 20# steel sheets which are processed in advance and weighed as standard corrosion hanging sheets and placing the standard corrosion hanging sheets in a beaker in a one-to-one correspondence manner; in the test process, the beakers are kept in a constant-temperature water bath at 80 ℃; and taking out the hanging piece after timing for 8 hours, drying, weighing and calculating the corrosion rate.
The descaling effect of the descaling agents of examples 1 to 4 and the comparative example was also tested by the following methods: adding 100ml of a descaling agent into the beaker with the volume of 4, respectively adding a scale sample with a great drying process, reacting for 3 hours in a constant-temperature water bath at 80 ℃, filtering and taking out residues, drying and weighing the residual residues, and calculating the descaling mass delta W; the residual liquid containing the dirt was subjected to absorbance test and the data was recorded.
The first embodiment,
A scale remover for a leachate anaerobic system comprises the following raw materials in parts by weight:
hydrochloric acid 5 parts
1 part of citric acid
EDTA 1 part
0.4 part of aminotrimethylene phosphonic acid
0.3 part of hydroxyethylidene diphosphonic acid
0.2 part of polymaleic acid
Sodium dodecyl sulfonate 0.3 part
0.9 portion of sodium hexametaphosphate
45 portions of water
The preparation method of the scale remover comprises the following steps:
s1: putting water into a container, heating to 70 ℃ by using a jacket heat source, then sequentially stirring citric acid, aminotrimethylene phosphonic acid, EDTA, hydroxyethylidene diphosphonic acid, polymaleic acid, sodium dodecyl sulfate and sodium hexametaphosphate until no precipitate exists, and cooling to room temperature for later use;
s2: and (4) adding hydrochloric acid into the solution prepared in the step (S1), and uniformly stirring to obtain the descaling agent.
Example II,
A scale remover for a leachate anaerobic system comprises the following raw materials in parts by weight:
hydrochloric acid 8 parts
3 portions of citric acid
EDTA 2 parts
1 part of aminotrimethylene phosphonic acid
0.5 part of hydroxyethylidene diphosphonic acid
0.6 part of polymaleic acid
Sodium dodecyl sulfonate 0.4 part
1.2 parts of sodium hexametaphosphate
84 portions of water
The preparation method of the scale remover comprises the following steps:
s1: putting water into a container, heating to 70 ℃ by using a jacket heat source, then sequentially stirring citric acid, aminotrimethylene phosphonic acid, EDTA, hydroxyethylidene diphosphonic acid, polymaleic acid, sodium dodecyl sulfate and sodium hexametaphosphate until no precipitate exists, and cooling to room temperature for later use;
s2: and (4) adding hydrochloric acid into the solution prepared in the step (S1), and uniformly stirring to obtain the descaling agent.
Example III,
A scale remover for a leachate anaerobic system comprises the following raw materials in parts by weight:
hydrochloric acid 12 parts
Citric acid 4 parts
EDTA 4 parts
Amino trimethylene phosphonic acid 2.5 parts
1.6 parts of hydroxyethylidene diphosphonic acid
0.8 part of polymaleic acid
Sodium dodecyl sulfate 0.5 part
Sodium hexametaphosphate 1.5 parts
135 portions of water
The preparation method of the scale remover comprises the following steps:
s1: putting water into a container, heating to 70 ℃ by using a jacket heat source, then sequentially stirring citric acid, aminotrimethylene phosphonic acid, EDTA, hydroxyethylidene diphosphonic acid, polymaleic acid, sodium dodecyl sulfate and sodium hexametaphosphate until no precipitate exists, and cooling to room temperature for later use;
s2: and (4) adding hydrochloric acid into the solution prepared in the step (S1), and uniformly stirring to obtain the descaling agent.
Example four,
A scale remover for a leachate anaerobic system comprises the following raw materials in parts by weight:
hydrochloric acid 15 parts
5 portions of citric acid
EDTA 6 parts
Amino trimethylene phosphonic acid 3.5 parts
2 parts of hydroxyethylidene diphosphonic acid
Polymaleic acid 1.5 parts
Sodium dodecyl sulfate 0.6 part
1.8 parts of sodium hexametaphosphate
180 portions of water
The preparation method of the scale remover comprises the following steps:
s1: putting water into a container, heating to 70 ℃ by using a jacket heat source, then sequentially stirring citric acid, aminotrimethylene phosphonic acid, EDTA, hydroxyethylidene diphosphonic acid, polymaleic acid, sodium dodecyl sulfate and sodium hexametaphosphate until no precipitate exists, and cooling to room temperature for later use;
s2: and (4) adding hydrochloric acid into the solution prepared in the step (S1), and uniformly stirring to obtain the descaling agent.
A control test,
A scale remover for a leachate anaerobic system comprises the following raw materials in parts by weight:
hydrochloric acid 15 parts
5 portions of citric acid
EDTA 6 parts
Amino trimethylene phosphonic acid 3.5 parts
2 parts of hydroxyethylidene diphosphonic acid
Polymaleic acid 1.5 parts
Sodium dodecyl sulfonate 0 part
0 portion of sodium hexametaphosphate
180 portions of water
The preparation method of the scale remover comprises the following steps:
s1: putting water into a container, heating to 70 ℃ by using a jacket heat source, then sequentially stirring citric acid, aminotrimethylene phosphonic acid, EDTA, hydroxyethylidene diphosphonic acid, polymaleic acid, sodium dodecyl sulfate and sodium hexametaphosphate until no precipitate exists, and cooling to room temperature for later use;
s2: and (4) adding hydrochloric acid into the solution prepared in the step (S1), and uniformly stirring to obtain the descaling agent.
TABLE 1 Corrosion Performance of the scale remover of example 1
| Numbering | Weight g of coupon before etching | Coupon mass g after corrosion | Time h | Corrosion rate g/(m)2h) |
| 1 | 10.3553 | 10.3496 | 8 | 0.68 |
| 2 | 10.5874 | 10.5780 | 8 | 1.15 |
| 3 | 10.8708 | 10.8554 | 8 | 1.88 |
TABLE 2 Corrosion performance of the scale remover of example 2
| Numbering | Weight g of coupon before etching | Coupon mass g after corrosion | Time h | Corrosion rate g/(m)2h) |
| 1 | 10.3328 | 10.3246 | 8 | 1.09 |
| 2 | 10.6408 | 10.6301 | 8 | 1.31 |
| 3 | 10.9705 | 10.9614 | 8 | 0.96 |
Table 3 shows the corrosion performance of the descaling agent of example 3
Table 4 shows the corrosion performance of the scale remover of example 4
| Numbering | Weight g of coupon before etching | Coupon mass g after corrosion | Time h | Corrosion rate g/(m)2h) |
| 1 | 10.3698 | 10.3604 | 8 | 1.15 |
| 2 | 10.6909 | 10.6722 | 8 | 1.74 |
| 3 | 10.8961 | 10.8854 | 8 | 1.31 |
As can be seen from tables 1 to 4, the highest corrosion rate was 1.88 g/(m) in Table 12h) Lower than national and industry standards.
Table 5 shows the descaling effects of examples 1 to 4
| Examples | Mass g of scale sample before descaling | Mass g of scale sample after descaling | △W | Light absorption |
| A | 4.3324 | 0.8522 | 3.4802 | +++ |
| II | 4.3251 | 0.6918 | 3.6333 | +++ |
| III | 4.3362 | 0.4344 | 3.8982 | ++++ |
| Fourthly | 4.3491 | 0.5582 | 3.7909 | +++++ |
| Control test | 4.3559 | 0.3769 | 3.9790 | + |
As can be seen from Table 5, the above examples all effectively melt the scale sample within 3 hours; because the experiments are all carried out under the static state, according to the actual production process, the circulation flow descaling is adopted, the descaling effect is better, and the better the light absorption property is, the more the stripped scale can not be agglomerated, so that the effect of preventing the pipeline from being blocked is better.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (6)
1. The descaling agent for the leachate anaerobic system is characterized by comprising the following raw materials in parts by weight:
5-15 parts of hydrochloric acid
1-5 parts of citric acid
1-6 parts of EDTA
0.4-3.5 parts of aminotrimethylene phosphonic acid
0.5-3.5 parts of corrosion inhibitor
0.3-0.6 part of sodium dodecyl sulfate
0.9 to 1.8 portions of sodium hexametaphosphate
45-180 parts of water.
2. The scale remover for leachate anaerobic systems as claimed in claim 1, wherein said corrosion inhibitor comprises 0.3-2 parts hydroxyethylidene diphosphonic acid and 0.2-1.5 parts polymaleic acid.
3. The scale remover for leachate anaerobic systems as claimed in claim 1, wherein the ratio of sodium dodecyl sulfate to sodium hexametaphosphate in parts is 1: 3.
4. The scale remover for the anaerobic system of percolate according to claim 1, wherein the hydrochloric acid is 12 parts, citric acid is 4 parts, aminotrimethylene phosphonic acid is 2.5 parts, EDTA is 4 parts, hydroxyethylidene diphosphonic acid is 1.6 parts, polymaleic acid is 0.8 part, sodium dodecyl sulfonate is 0.5 part, sodium hexametaphosphate is 1.5 parts, and water is 135 parts.
5. A preparation method of a descaling agent for a leachate anaerobic system is characterized by comprising the following steps: the method comprises the following steps:
s1: putting water into a container, heating to 60-75 ℃, then sequentially stirring citric acid, aminotrimethylene phosphonic acid, EDTA, a corrosion inhibitor, sodium dodecyl sulfate and sodium hexametaphosphate until no precipitate exists, and cooling to room temperature for later use;
s2: and (4) adding hydrochloric acid into the solution prepared in the step (S1), and uniformly stirring to obtain the descaling agent.
6. The method as claimed in claim 5, wherein the heating in S1 is performed by using a jacket heat source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110722616.XA CN113415876A (en) | 2021-06-29 | 2021-06-29 | Scale remover for leachate anaerobic system and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114226339A (en) * | 2021-12-10 | 2022-03-25 | 安徽中环环保科技股份有限公司 | Rubbish leachate system scale removal integrated device |
| CN115301711A (en) * | 2022-08-04 | 2022-11-08 | 江山市虎鼎环保科技有限公司 | A kind of anti-clogging method of fly ash water washing filter press |
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| CN115301711A (en) * | 2022-08-04 | 2022-11-08 | 江山市虎鼎环保科技有限公司 | A kind of anti-clogging method of fly ash water washing filter press |
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