CN115028254A - Ammonia nitrogen remover and application thereof - Google Patents

Ammonia nitrogen remover and application thereof Download PDF

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Publication number
CN115028254A
CN115028254A CN202210766726.0A CN202210766726A CN115028254A CN 115028254 A CN115028254 A CN 115028254A CN 202210766726 A CN202210766726 A CN 202210766726A CN 115028254 A CN115028254 A CN 115028254A
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Prior art keywords
ammonia nitrogen
parts
nitrogen remover
remover
sewage
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CN202210766726.0A
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Chinese (zh)
Inventor
杜瑞奎
安富强
宋江锋
张从之
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Shanxi Tieju Environmental Protection Technology Co ltd
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Shanxi Tieju Environmental Protection Technology Co ltd
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Priority to CN202210766726.0A priority Critical patent/CN115028254A/en
Publication of CN115028254A publication Critical patent/CN115028254A/en
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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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • 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
    • 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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • 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
    • 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
    • C02F2303/04—Disinfection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

The invention discloses an ammonia nitrogen remover and application thereof, and belongs to the technical field of water treatment. The ammonia nitrogen remover comprises the following components in percentage by mass: 60-70 parts of ferrate, 10-20 parts of hypochlorite and 20-30 parts of inorganic powder. Firstly, adjusting the pH value of the sewage to be treated to 7-8; then adding an ammonia nitrogen remover into the sewage, stirring for 30 min, and performing coagulation and precipitation treatment. The components of the ammonia nitrogen remover have good oxidation removing effect on ammonia nitrogen, the generated secondary pollution risk is greatly reduced, and the safety of the operation process is ensured; the raw materials are easier to obtain and buy in large quantities, the user can remove the ammonia nitrogen component in the wastewater with lower production cost, the removal rate can reach more than 95 percent, the reaction condition is easy to realize, the operating cost is low, and the method has good commercial application prospect.

Description

Ammonia nitrogen remover and application thereof
Technical Field
The invention relates to the technical field of water treatment, in particular to an ammonia nitrogen remover, and especially relates to an ammonia nitrogen remover and application thereof.
Background
The ammonia nitrogen in water is mainly derived from the decomposition products of nitrogenous organic matters in domestic sewage under the action of microorganisms, industrial wastewater such as coking and synthetic ammonia, rainwater runoff and loss of agricultural fertilizers are also important sources of nitrogen. In addition, ammonia nitrogen is discharged into the environment from factories such as steel, petrifaction, coking, synthetic ammonia, power generation, cement and the like, industrial wastewater, gas dust containing ammonia and smoke are discharged into the environment, and the ammonia in the gas is dissolved in water to form ammonia nitrogen.
The products of nitrate and nitrite generated by the nitrification of ammonia nitrogen in water body are harmful to drinking water. Drinking water with high concentrations of nitrates and nitrites may cause two health hazards to the human body, and long-term drinking is extremely harmful to the body, namely, the induction of methemoglobinemia and the production of carcinogenic nitrosamines. Nitrate is reduced to nitrite under the action of gastrointestinal bacteria, and the nitrite can be combined with hemoglobin to form methemoglobin, so as to cause oxygen deficiency. The main harm of ammonia nitrogen to aquatic organisms is free ammonia. Its toxicity is several tens of times greater than that of ammonium salts and increases with increasing alkalinity. The ammonia nitrogen is easy to cause damage to aquatic tissues; reducing the oxygen transmission among tissues, so that the aquatic organisms are in a stress state for a long time, and increasing the susceptibility of animals to diseases; the growth speed is reduced; reducing reproductive capacity; the aquatic organisms appear as a hyper, loss of balance in the water, convulsion, and even death in severe cases.
At the same time, due to NH 4 + The oxidation of (2) can cause the concentration of dissolved oxygen in the water body to be reduced, the water body is blackened and smelled, the water quality is reduced, and the survival of aquatic animals and plants is influenced. Too much nitrogen content in water can also cause eutrophication of water bodies, thereby causing a series of serious consequences. Due to the presence of nitrogen, the number of photosynthetic microorganisms (mostly algae) increases, i.e. eutrophication of the water body occurs.
For removing ammonia nitrogen, the mainly adopted technical methods comprise biochemical treatment, chemical treatment and physical treatment. For industrial wastewater with poor biodegradability, ammonia nitrogen is generally removed by adding an oxidant, and the adopted medicament is mainly a chlorine-containing oxidant. If the water is not used properly, secondary environmental pollution can be caused.
Chinese patent CN107434290A entitled Ammonia nitrogen remover, and preparation method and application thereof, wherein the ammonia nitrogen remover comprises the following components: the ammonia nitrogen remover is prepared from components such as aluminum sulfate, sodium carboxymethylcellulose, potassium phosphate, diatomite, hydroxypropyl acrylate, trimethylolpropane, magnesium phosphate, activated carbon powder and the like, is used for treating wastewater, can be used independently, and can be matched with an ammonia nitrogen stripping tower for use, so that the removal rate of ammonia nitrogen is over 95 percent. However, trimethylolpropane and hydroxypropyl acrylate are high in use risk in the treatment process, secondary pollution is easy to generate, the treatment process conditions are harsh, the required time is long, and the corresponding production cost is relatively high.
Disclosure of Invention
The invention provides an ammonia nitrogen remover and application thereof, which realizes ammonia nitrogen in sewage by simple component composition and process and solves the technical problem of secondary pollution possibly caused in the process of removing the ammonia nitrogen.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: an ammonia nitrogen remover comprises, by mass, 60-70 parts of ferrate, 10-20 parts of hypochlorite and 20-25 parts of inorganic powder.
The ferrate is sodium ferrate and/or potassium ferrate.
The hypochlorite is calcium hypochlorite and/or sodium hypochlorite.
The inorganic powder is inorganic powder with high specific surface area, and comprises activated carbon powder, diatomite or fly ash.
The invention mainly utilizes ferrate, combines a small amount of hypochlorite and inorganic powder materials such as activated carbon powder, diatomite, fly ash and the like, and oxidizes and removes ammonia nitrogen in the wastewater to ensure that the ammonia nitrogen meets the emission requirement.
The ferrate has strong oxidability, can release a large amount of atomic oxygen when dissolved in water, and can be combined with hypochlorite and inorganic powder, thereby not only realizing the effect of reducing ammonia nitrogen components in water, but also effectively killingAnd killing other germs and viruses in the water. At the same time, the Fe (OH) is reduced to a new ecological form 3 The inorganic flocculant is used for removing fine suspended matters in water after precipitation.
Therefore, the remover composition is also superior to ammonia nitrogen removers containing chlorine disinfectants and permanganate, and in the whole process of disinfecting and purifying water, excessive substances harmful to human bodies are not additionally generated, so that the environmental protection index and the safety of the water treatment process are improved.
The ammonia nitrogen remover is used for treating ammonia nitrogen components in sewage.
Adjusting the pH value of the sewage to be treated until the pH value is between 7 and 8; adding an ammonia nitrogen remover comprising ferrate, hypochlorite and inorganic powder into a substance to be treated, and stirring for 30 min; filtration was performed using filter paper. The adjustment to the alkaline environment can promote the use effect of the ammonia nitrogen remover, avoid acid deposition in mine water and reduce the risk of secondary pollution.
The usage amount of the ammonia nitrogen remover added into the substance to be treated is 80-260 g per cubic meter.
And adding an ammonia nitrogen remover into the sewage to be treated, and then performing precipitation treatment.
Precipitating by PAC + PAM method, adding PAC to make its concentration at 10 ppm, stirring for 1 min; adding PAM to make the concentration of PAM 5 ppm; stirring for 1 min, standing for 15 min, and collecting supernatant.
Compared with the prior art, the invention has the substantial characteristics that: the invention adopts the complex of ferrate, hypochlorite and inorganic powder with high specific surface area to oxidize ammonia nitrogen in the wastewater, has simple components, is easy to obtain, has good removal effect on the ammonia nitrogen in the water and has higher safety; in addition, the application method of the ammonia nitrogen remover provided by the invention is simple and convenient to operate, easy to control, low in production cost, free of pollution, mild in treatment condition, suitable for the requirement of industrial treatment, and capable of being popularized and used.
Drawings
The invention is further described with reference to the following figures and detailed description.
FIG. 1 is a table showing the data of ammonia nitrogen in water in example 1 in which the ammonia nitrogen remover of the present invention is applied.
FIG. 2 is a table showing the data of ammonia nitrogen in water in example 2 in which the ammonia nitrogen remover of the present invention is applied.
FIG. 3 is a table showing the data of ammonia nitrogen in water in example 3 of the application of the ammonia nitrogen remover according to the present invention.
FIG. 4 is a table showing the data of ammonia nitrogen in water in example 4 of the application of the ammonia nitrogen remover according to the present invention.
FIG. 5 is a table showing the data of ammonia nitrogen in water in example 5 in which the ammonia nitrogen remover of the present invention is applied.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, their indicated orientations or positional relationships are based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms "first," "second," and "third" are only used for descriptive purposes and are not to be construed as indicating or implying relative importance.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Example 1
The ammonia nitrogen remover consists of 60 parts of sodium ferrate, 15 parts of sodium hypochlorite and 25 parts of activated carbon powder.
When in use, firstly, the pH value of the sewage is adjusted to 7.5; then at 1m 3 Adding an ammonia nitrogen remover into the sewage, stirring for 30 min, and filtering by using filter paper to measure the ammonia nitrogen in the filtrate; and finally carrying out traditional PAC + PAM coagulating sedimentation treatment.
The specific conditions of the precipitation treatment are as follows: adding PAC to make the concentration of the PAC to be 10 ppm, and stirring for 1 min; adding PAM to make the concentration of PAM 5 ppm; stirring for 1 min, standing for 15 min, and collecting supernatant to measure ammonia nitrogen content.
The ammonia nitrogen data of water before and after treatment are shown in figure 1.
Example 2
The ammonia nitrogen remover consists of 65 parts of potassium ferrate, 15 parts of sodium hypochlorite and 20 parts of fly ash.
When in use, firstly, the pH value of the sewage is adjusted to 7.0; then at 1m 3 Adding an ammonia nitrogen remover into the sewage, stirring for 30 min, and filtering by using filter paper to measure the ammonia nitrogen in the filtrate; and finally carrying out traditional PAC + PAM coagulating sedimentation treatment.
The specific conditions of the precipitation treatment are as follows: adding PAC to make the concentration of the PAC to be 10 ppm, and stirring for 1 min; adding PAM to make the concentration of PAM 5 ppm; stirring for 1 min, standing for 15 min, and collecting supernatant to measure ammonia nitrogen content.
The ammonia nitrogen data of the water before and after treatment are shown in the following figure 2.
Example 3
70 parts of potassium ferrate, 10 parts of calcium hypochlorite and 20 parts of diatomite form the ammonia nitrogen remover.
When in use, firstly, the pH value of the sewage is adjusted to 8.0; then at 1m 3 Adding an ammonia nitrogen remover into the sewage, stirring for 30 min, and filtering by using filter paper to measure the ammonia nitrogen in the filtrate; and finally carrying out traditional PAC + PAM coagulating sedimentation treatment.
The specific conditions of the precipitation treatment are as follows: adding PAC to make the concentration of PAC to be 10 ppm, and stirring for 1 min; adding PAM to make the concentration of PAM 5 ppm; stirring for 1 min, standing for 15 min, and collecting supernatant to measure ammonia nitrogen content.
The ammonia nitrogen data of the water before and after treatment are shown in the following figure 3.
Example 4
60 parts of sodium ferrate, 20 parts of calcium hypochlorite and 20 parts of activated carbon powder form an ammonia nitrogen remover.
When in use, firstly, the pH value of the sewage is adjusted to 7.0; then at 1m 3 Adding an ammonia nitrogen remover into the sewage, stirring for 30 min, and filtering by using filter paper to measure the ammonia nitrogen in the filtrate; and finally carrying out traditional PAC + PAM coagulating sedimentation treatment.
The specific conditions of the precipitation treatment are as follows: adding PAC to make the concentration of the PAC to be 10 ppm, and stirring for 1 min; adding PAM to make the concentration of PAM 5 ppm; stirring for 1 min, standing for 15 min, and collecting supernatant to measure ammonia nitrogen content.
The ammonia nitrogen data of the water before and after treatment are shown in the following figure 4.
Example 5
The ammonia nitrogen remover consists of 60 parts of potassium ferrate, 15 parts of calcium hypochlorite and 25 parts of diatomite.
When in use, firstly, the pH value of the sewage is adjusted to 7.5; then at 1m 3 Adding an ammonia nitrogen remover into the sewage, stirring for 30 min, and filtering by using filter paper to measure the ammonia nitrogen in the filtrate; and finally carrying out traditional PAC + PAM coagulating sedimentation treatment.
The specific conditions of the precipitation treatment are as follows: adding PAC to make the concentration of the PAC to be 10 ppm, and stirring for 1 min; adding PAM to make the concentration of PAM 5 ppm; stirring for 1 min, standing for 15 min, and collecting supernatant to measure ammonia nitrogen content.
The ammonia nitrogen data of the water before and after treatment are shown in the following figure 5.
The ammonia nitrogen surplus in the water after the coagulating sedimentation is calculated to obtain:
the ammonia nitrogen removal rate of the No. 1-1 is 87.50%, the ammonia nitrogen removal rate of the No. 1-2 is 87.90%, and the ammonia nitrogen removal rate of the No. 1-3 is 93.64%;
the ammonia nitrogen removal rate of No. 2-1 is 89.29%, the ammonia nitrogen removal rate of No. 2-2 is 89.52%, and the ammonia nitrogen removal rate of No. 2-3 is 94.80%;
the ammonia nitrogen removal rate of No. 3-1 is 89.29%, the ammonia nitrogen removal rate of No. 3-2 is 90.32%, and the ammonia nitrogen removal rate of No. 3-3 is 95.38%;
the ammonia nitrogen removal rate of No. 4-1 is 89.29%, the ammonia nitrogen removal rate of No. 4-2 is 89.52%, and the ammonia nitrogen removal rate of No. 4-3 is 95.38%;
the ammonia nitrogen removal rates of No. 5-1 and No. 5-2 were 85.71%, 88.71%, and 94.22%, respectively.
When a small amount of the chemical agent such as 80g is added, the treatment effect of each group is not very different, and the ammonia nitrogen removal rate is low.
When 170g of ammonia nitrogen is put in, the difference of each group on the ammonia nitrogen removal effect is larger under different conditions;
if the ammonia nitrogen content in the sewage is high and the effect is better, as shown in the data, a large amount of medicament, such as 260g, needs to be added, and the ammonia nitrogen removal rate after final precipitation is about 95%.
Therefore, the ammonia nitrogen remover has better sewage purification effect, simple raw materials, lower cost, convenient operation in the using process, shorter time, easy realization of the environment required by the reaction, suitability for mass industrial production and effective improvement of sewage treatment effect and efficiency.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (6)

1. An ammonia nitrogen remover, which is characterized in that: the high-efficiency energy-saving agent comprises, by mass, 60-70 parts of ferrate, 10-20 parts of hypochlorite and 20-25 parts of inorganic powder.
2. The ammonia nitrogen remover according to claim 1, characterized in that: the ferrate is sodium ferrate and/or potassium ferrate.
3. The ammonia nitrogen remover according to claim 1, characterized in that: the hypochlorite is calcium hypochlorite and/or sodium hypochlorite.
4. The ammonia nitrogen remover according to claim 1, characterized in that: the inorganic powder is inorganic powder with high specific surface area, and comprises activated carbon powder, diatomite or fly ash.
5. Use of an ammonia nitrogen remover according to any of claims 1-4, characterized in that: used for treating ammonia nitrogen components in sewage.
6. The application of the ammonia nitrogen remover according to claim 5, is characterized in that: the usage amount of the ammonia nitrogen remover added into the substance to be treated is 80-260 g (80-260 ppm) per cubic meter.
CN202210766726.0A 2022-07-01 2022-07-01 Ammonia nitrogen remover and application thereof Pending CN115028254A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106957070A (en) * 2017-03-20 2017-07-18 浙江清环保工程有限公司 A kind of rapidly and efficiently ammonia nitrogen removal agent and its preparation method and application
CN110697824A (en) * 2019-10-16 2020-01-17 德蓝水技术股份有限公司 Ammonia nitrogen remover and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106957070A (en) * 2017-03-20 2017-07-18 浙江清环保工程有限公司 A kind of rapidly and efficiently ammonia nitrogen removal agent and its preparation method and application
CN110697824A (en) * 2019-10-16 2020-01-17 德蓝水技术股份有限公司 Ammonia nitrogen remover and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
许仕荣: "《NaClO联用K2 FeO4预氧化强化混凝去除锰及氨氮的研究》", 《安全与环境学报》, vol. 19, no. 4, pages 1341 - 1348 *

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