CN115893610A - Preparation method and application of novel environment-friendly water purifying agent - Google Patents
Preparation method and application of novel environment-friendly water purifying agent Download PDFInfo
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- CN115893610A CN115893610A CN202211525892.8A CN202211525892A CN115893610A CN 115893610 A CN115893610 A CN 115893610A CN 202211525892 A CN202211525892 A CN 202211525892A CN 115893610 A CN115893610 A CN 115893610A
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- water purifying
- purifying agent
- friendly water
- novel environment
- treatment
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 239000012629 purifying agent Substances 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000010865 sewage Substances 0.000 claims abstract description 31
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 18
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 14
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000011259 mixed solution Substances 0.000 claims abstract description 11
- 238000010791 quenching Methods 0.000 claims abstract description 10
- 230000000171 quenching effect Effects 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 8
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims abstract description 6
- 235000019253 formic acid Nutrition 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 3
- LJGHYPLBDBRCRZ-UHFFFAOYSA-N 3-(3-aminophenyl)sulfonylaniline Chemical compound NC1=CC=CC(S(=O)(=O)C=2C=C(N)C=CC=2)=C1 LJGHYPLBDBRCRZ-UHFFFAOYSA-N 0.000 claims description 15
- 239000000243 solution Substances 0.000 claims description 9
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 claims description 7
- 235000019345 sodium thiosulphate Nutrition 0.000 claims description 7
- 238000004448 titration Methods 0.000 claims description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract description 10
- 239000000460 chlorine Substances 0.000 abstract description 10
- 229910052801 chlorine Inorganic materials 0.000 abstract description 10
- 241000588724 Escherichia coli Species 0.000 abstract description 9
- 230000005855 radiation Effects 0.000 abstract description 9
- 230000000813 microbial effect Effects 0.000 abstract description 8
- 230000008929 regeneration Effects 0.000 abstract description 8
- 238000011069 regeneration method Methods 0.000 abstract description 8
- 239000002351 wastewater Substances 0.000 description 9
- SCKXCAADGDQQCS-UHFFFAOYSA-N Performic acid Chemical compound OOC=O SCKXCAADGDQQCS-UHFFFAOYSA-N 0.000 description 8
- 241000894007 species Species 0.000 description 5
- 239000011734 sodium Substances 0.000 description 4
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
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- Treatment Of Water By Oxidation Or Reduction (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention discloses a preparation method and application of a novel environment-friendly water purifying agent. The method comprises the following steps: 1) Mixing formic acid and sulfuric acid in a cooling environment until the mixture is cooled to obtain a mixed solution; 2) And (2) slowly adding a hydrogen peroxide solution into the mixed solution obtained in the step (1) in a cooling environment, uniformly stirring, and standing to obtain the novel environment-friendly water purifying agent. The invention proves that: the domestic sewage is treated for three times by adopting the water purifying agent and the treatment method, which are superior to the traditional treatment methods, namely chlorine treatment and ultraviolet radiation treatment, in the aspects of microbial diversity and Escherichia coli quenching degree. The novel environment-friendly water purifying agent provided by the invention can effectively promote sewage regeneration.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a preparation method and application of a novel environment-friendly water purifying agent.
Background
As economy develops and population grows, water shortage is becoming a global concern. The reduction of available water resources and the limitation of water resource regeneration make development and reuse of water resources to be concerned. In addition to limiting water resource usage from the source, reuse of wastewater resources is another potential source for mitigating water resource shortages. At present, the regeneration rate of urban sewage in China is not enough to be 15% of the discharge amount, which shows that the regeneration of the sewage has great potential in relieving the water supply pressure and particularly contributes to sustainable agriculture.
Chlorine treatment and ultraviolet radiation treatment are common methods for wastewater treatment. However, the by-products formed by the chlorine treatment increase the toxicity of the discharged sewage and may adversely affect the inflow environment and human health. Ultraviolet radiation treatment is considered a chlorine substitute in wastewater treatment due to its short contact time and the formation of non-toxic by-products. However, uv radiation treatment requires high energy and cost for equipment and management, and is limited in practical application by water quality parameters.
Disclosure of Invention
The invention aims to provide a preparation method of a novel environment-friendly water purifying agent and application thereof in sewage treatment, and the three-stage treatment is carried out on domestic sewage by utilizing the advantages of high efficiency, low toxicity and no harmful residue, so that the regeneration and utilization rate of the sewage is improved.
In order to achieve the purpose, the invention provides the following technical scheme:
a preparation method of a novel environment-friendly water purifying agent comprises the following steps:
(1) Mixing formic acid and sulfuric acid in a cooling environment until the mixture is cooled to obtain a mixed solution;
(2) Slowly adding hydrogen peroxide (H) into the mixed solution in the step (1) in a cooling environment 2 O 2 ) And uniformly stirring the solution, and standing to obtain the novel environment-friendly water purifying agent.
Preferably, the hydrogen peroxide solution is a 50% hydrogen peroxide solution by mass fraction.
Preferably, the mass ratio of the formic acid solution to the sulfuric acid solution to the hydrogen peroxide solution is 10.
Preferably, the standing is standing for 1 hour.
The invention also aims to provide a novel environment-friendly water purifying agent prepared by the preparation method.
The invention also aims to provide the application of the novel environment-friendly water purifying agent in sewage treatment.
Preferably, in the application, the hydrogen peroxide concentration and the performic acid concentration in the novel environment-friendly water purifying agent are calculated by adopting a titration method, and then the performic acid concentration is calculatedAdding a novel environment-friendly water purifying agent into a sewage sample at the temperature of 15-60 mg/min/L, and adding sodium thiosulfate (Na) after the treatment time is up 2 SO 3 ) Quenching reaction is carried out.
The invention also aims to provide a sewage treatment method, wherein the novel environment-friendly water purifying agent is added into a sewage sample according to the performic acid concentration of 15-60 mg-min/L, and sodium thiosulfate is added for quenching reaction after the treatment time is up.
The invention has the following beneficial effects:
the invention provides a preparation method of a novel environment-friendly water purifying agent and application of the novel environment-friendly water purifying agent in sewage treatment. The invention evaluates the regeneration effect of different water purifying agents for treating sewage by using the diversity of escherichia coli and microorganisms which are common indexes in sewage regeneration, and the result proves that: the domestic sewage is treated for three times by adopting the water purifying agent and the treatment method, which are superior to the traditional treatment methods, namely chlorine treatment and ultraviolet radiation treatment, in the aspects of microbial diversity and Escherichia coli quenching degree. The novel environment-friendly water purifying agent provided by the invention can effectively promote sewage regeneration.
Drawings
Fig. 1 shows the e.coli numbers before and after treatment of the wastewater samples.
Detailed Description
The following examples are further illustrative of the present invention and are not intended to be limiting thereof.
Example 1
(1) Preparing a mixed solution A: mixing 10 parts of formic acid and 1 part of sulfuric acid in a cooling environment until cooled;
(2) Preparing a mixed solution B: slowly adding 14 parts of 50% wt hydrogen peroxide (H) to the A mixed solution under cooling 2 O 2 ) Uniformly stirring the solution, and standing for 1 hour to obtain a mixed solution B;
(3) 100mg of the mixed solution B was mixed with 200mL of 0.1M sulfuric acid buffer solution, and potassium permanganate (KMnO) was added thereto at a concentration of 0.02mol/L 4 ) Titrating the solution B, and calculating the concentration of hydrogen peroxide;
(4) Adding excessive potassium iodide into the system in the step (3), and then adding 0.02mol/L sodium thiosulfate (Na) 2 SO 3 ) Titrating the solution, and calculating the concentration of performic acid;
(5) Adding the prepared B solution into the sewage sample according to the low concentration of performic acid of 15 mg.min/L (PFA _ L,1mg/L treatment for 15 min) and the high concentration of performic acid of 60 mg.min/L (PFA _ L,4mg/L treatment for 15 min), respectively, adding sodium thiosulfate (Na) after reaching the treatment time 2 SO 3 ) Quenching reaction is carried out.
The microbial diversity in municipal sewage and the degree of quenching of E.coli (E.coli) were compared by two concentrations of performic acid (low concentration: PFA _ L, high concentration: PFA _ H) against the original samples, i.e., the untreated sewage sample (BT), chlorine treatment (Chl) and ultraviolet radiation treatment (UV) as controls.
Wherein the chlorine treatment is 60 mg.min/L (Chl, 2mg/L treatment for 30 min), and sodium thiosulfate (Na) is added after the treatment time is reached 2 SO 3 ) Quenching reaction is carried out.
Wherein the ultraviolet radiation treatment intensity is 10mJ/cm 2 。
The physicochemical properties of the sewage samples of the present invention before treatment are shown in Table 1. As can be seen from Table 1, the wastewater sample used in the present invention has reached the discharge standard, but the recycling of the wastewater sample has not reached the standard. .
TABLE 1 physicochemical Properties of the samples of wastewater used in the present invention
Note: conductivity: electrical conductivity; COD: chemical oxygen demand; TSS: total suspended solids; TOC: total organic carbon;
NT: total nitrogen.
The microbial diversity before and after the treatment of the wastewater samples is shown in Table 2. Coli number before and after treatment of the sewage sample is shown in fig. 1.
As shown in FIG. 1, the number of Escherichia coli in the low-concentration performic acid (PFA _ L) treated sewage is slightly lower than that in the chlorine treatment (Chl), and the number is below 25CFU/100 mL; the number of escherichia coli in the sewage treated by high-concentration performic acid (PFA _ H) is lower than 10CFU/100mL, and the sewage reaches the European Union regenerated sewage standard; performic acid, chlorine treatment were significantly lower than untreated wastewater samples (BT) and ultraviolet radiation treatment (UV). The results for microbial diversity are shown in table 2, where Shannon index (Shannon) represents species abundance and uniformity of microbial community, and detected species number (Observed _ feature No) represents species abundance, both as indicated by Shannon index and detected species numbers, with minimal high concentration performic acid (PFA _ H) treatment followed by low concentration performic acid (PFA _ L) treatment, both lower than chlorine treatment (Chl), ultraviolet radiation treatment (UV) and untreated wastewater sample (BT). The results show that the water purifying agent and the treatment method are superior to the traditional treatment method in the aspects of microbial diversity and Escherichia coli quenching degree.
TABLE 2 microbial diversity before and after treatment of the wastewater samples
Note: shannon: a shannon index; observer _ feature No.: the number of species detected.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and should be considered to be within the scope of the invention.
Claims (8)
1. The preparation method of the novel environment-friendly water purifying agent is characterized by comprising the following steps:
(1) Mixing formic acid and sulfuric acid in a cooling environment until the mixture is cooled to obtain a mixed solution;
(2) And (2) slowly adding a hydrogen peroxide solution into the mixed solution obtained in the step (1) in a cooling environment, uniformly stirring, and standing to obtain the novel environment-friendly water purifying agent.
2. The method for preparing the novel environment-friendly water purifying agent according to claim 1, wherein the hydrogen peroxide solution is a 50% hydrogen peroxide solution by mass fraction.
3. The preparation method of the novel environment-friendly water purifying agent according to claim 1, characterized in that the mass ratio of the formic acid solution to the sulfuric acid solution to the hydrogen peroxide solution is 10.
4. The method for preparing a novel environment-friendly water purifying agent according to claim 1, characterized in that the standing is for 1 hour.
5. The novel environment-friendly water purifying agent prepared by the preparation method according to claim 1.
6. The use of the novel environmentally friendly water purifying agent of claim 5 in sewage treatment.
7. The use as claimed in claim 6, wherein the concentration of hydrogen peroxide and performic acid in the novel environment-friendly water purifying agent is calculated by titration, the novel environment-friendly water purifying agent is added into a sewage sample according to the performic acid concentration of 15-60 mg-min/L, and sodium thiosulfate is added for quenching reaction after the treatment time is up.
8. A sewage treatment method, characterized in that the novel environment-friendly water purifying agent of claim 5 is added into a sewage sample according to the performic acid concentration of 15-60 mg-min/L, and sodium thiosulfate is added for quenching reaction after the treatment time is reached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211525892.8A CN115893610A (en) | 2022-11-30 | 2022-11-30 | Preparation method and application of novel environment-friendly water purifying agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211525892.8A CN115893610A (en) | 2022-11-30 | 2022-11-30 | Preparation method and application of novel environment-friendly water purifying agent |
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| Publication Number | Publication Date |
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| CN115893610A true CN115893610A (en) | 2023-04-04 |
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| CN202211525892.8A Pending CN115893610A (en) | 2022-11-30 | 2022-11-30 | Preparation method and application of novel environment-friendly water purifying agent |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994020424A1 (en) * | 1993-03-12 | 1994-09-15 | Kemira Peroxides B.V. | Method for disinfecting water such as drain water in horticulture, and appliance to be used therewith |
| CA2185100A1 (en) * | 1994-03-09 | 1995-09-14 | Tapio Mattila | A method for preparation of aqueous solutions containing performic acid as well as their use |
| CN101268045A (en) * | 2005-09-13 | 2008-09-17 | 凯米罗总公司 | Process for the preparation of peroxy acids |
| CN104961209A (en) * | 2015-07-10 | 2015-10-07 | 江苏鸿佑环保有限公司 | Efficient chloride-free disinfection system for waste water |
-
2022
- 2022-11-30 CN CN202211525892.8A patent/CN115893610A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994020424A1 (en) * | 1993-03-12 | 1994-09-15 | Kemira Peroxides B.V. | Method for disinfecting water such as drain water in horticulture, and appliance to be used therewith |
| CA2185100A1 (en) * | 1994-03-09 | 1995-09-14 | Tapio Mattila | A method for preparation of aqueous solutions containing performic acid as well as their use |
| CN101268045A (en) * | 2005-09-13 | 2008-09-17 | 凯米罗总公司 | Process for the preparation of peroxy acids |
| CN104961209A (en) * | 2015-07-10 | 2015-10-07 | 江苏鸿佑环保有限公司 | Efficient chloride-free disinfection system for waste water |
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