CN111268829A - Process for removing phosphorus from chemical plant wastewater - Google Patents
Process for removing phosphorus from chemical plant wastewater Download PDFInfo
- Publication number
- CN111268829A CN111268829A CN202010186061.7A CN202010186061A CN111268829A CN 111268829 A CN111268829 A CN 111268829A CN 202010186061 A CN202010186061 A CN 202010186061A CN 111268829 A CN111268829 A CN 111268829A
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- CN
- China
- Prior art keywords
- medium
- ferroomox
- chemical plant
- removing phosphorus
- plant wastewater
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
Abstract
The invention relates to a process for removing phosphorus from wastewater of a chemical plant, S1, adjusting the pH value of the wastewater to 2-3; s2, feeding the regulated wastewater into an FM device for catalytic adsorption; the FM equipment contains a FerroMox medium which is nano-scale catalytic iron oxyhydroxide; s3, adjusting the pH value of the treated water to be neutral and then directly discharging the treated water; and S4, testing the FerrooMox medium and recovering the function. The phosphorus in the wastewater is adsorbed to the surface of the FerrooMox medium, and then the ferric phosphate is formed on the surface of the FerrooMox medium and adsorbed to the surface of the medium to be removed, so that the FerrooMox medium can promote the function to be recovered for reuse through strong oxidation.
Description
Technical Field
The invention relates to the field of water treatment, in particular to a process for removing phosphorus from wastewater of a chemical plant.
Background
The wastewater of the chemical plant contains a large amount of phosphorus, has the characteristics of high toxicity, high concentration and difficult biodegradation, and once entering the water environment, the wastewater can cause serious ecological environment damage and threaten the survival of human beings and aquatic organisms.
Disclosure of Invention
The invention aims to provide a process for removing phosphorus from wastewater of a chemical plant.
The invention realizes the purpose through the following technical scheme: a process for removing phosphorus from chemical plant wastewater comprises the following steps:
s1, adjusting the pH value of the wastewater to 2-3;
s2, feeding the regulated wastewater into an FM device for catalytic adsorption; the FM equipment contains a FerroMox medium which is nano-scale catalytic iron oxyhydroxide;
s3, adjusting the pH value of the treated water to be neutral and then directly discharging the treated water;
and S4, testing the FerrooMox medium and recovering the function.
Further, the S4 includes the following steps:
s41, configuring equipment; soaking the FerrooMox medium in pure water, discharging the pure water, and back washing with clean water;
s42, setting the operation parameters of inflow water; the inflow direction is as follows: from top to bottom; the pH value is more than or equal to 5; an operating pressure of at least 2 bar;
s43, testing; starting a filtration test from a flow rate of 20BV/Hr and recording the reading of a test outlet; then gradually reducing the flow rate to 5BV/Hr to find the most suitable flow rate point;
s44, preparing NaOH solution to clean the FerroMox medium; and (4) performing back flushing on the FerrooMox medium to remove dirt and other suspended solids.
Further, the S31 uses a glass column with a diameter of 80mm and a height of 1400mm, and 5 liters of FerrooMox is put into the glass column, and the height of the FerrooMox filter bed is kept at 1 meter.
Further, the S41 soaking time is at least 1 hour.
Further, the S41 backwashing time is at least 30 minutes.
Further, the PH in S42 is between 6 and 7.
Further, the concentration of the NaOH solution in the S44 is 0.1%.
Compared with the prior art, the process for removing phosphorus from the chemical plant wastewater has the beneficial effects that: the phosphorus in the wastewater is adsorbed to the surface of the FerrooMox medium, and then ferric phosphate is formed on the surface of the FerrooMox medium and adsorbed to the surface of the FerrooMox medium to be removed, and the FerrooMox medium can promote the function to be recovered for reuse through strong oxidation.
Drawings
FIG. 1 is a schematic flow diagram of the present invention.
Detailed Description
A process for removing phosphorus from chemical plant wastewater comprises the following steps:
s1, adjusting the pH value of the wastewater to 2-3;
s2, feeding the regulated wastewater into an FM device for catalytic adsorption; the FM equipment contains a FerroMox medium which is a nanoscale catalytic iron oxyhydroxide, has strong adsorption capacity, has catalytic action on the inside and the outside, can promote the functional recovery through strong oxidation after adsorption saturation, and almost completely oxidizes waste liquid generated in the functional recovery process;
s3, adjusting the pH value of the treated water to be neutral and then directly discharging the treated water;
s4, testing the FerrooMox medium and recovering the function; the method comprises the following steps:
s41, configuring equipment;
the FerrooMox media was soaked in pure water for at least 1 hour, the pure water was drained off, and back-washed with clean water for at least 30 minutes.
A glass column of 80mm diameter and 1400mm height was used. (volume calculation about 7 liters)
5 liters of FerroMox was placed in a glass column.
The height of the FerroMox filter bed was maintained at 1 meter.
This procedure provides 40% backwash space and 50cm2The filtration area.
S42, setting the operation parameters of inflow water;
the inflow direction is from top to bottom;
pH 5 or more (best removal between pH6 and 7 is recommended);
the operating pressure is at least 2 bar;
it must be ensured that the incoming water does not contain any oil or grease.
S43, testing;
the filtration test was started from a flow rate of 20BV/Hr and the test outlet reading was recorded.
The flow rate was again gradually decreased to 5BV/Hr to find the most suitable flow rate point.
If a satisfactory test result cannot be obtained, the number is increased and the test steps are repeated.
S44, preparing a 0.1% NaOH solution to clean the FerroMox medium;
a 0.1% solution was prepared. Such as: 10 g of NaOH (calculated as 100% strength NaOH) are dissolved in 1L of clear water, i.e. 10 mg/L).
And (4) performing back flushing on the FerrooMox medium to remove dirt and other suspended solids.
The phosphorus in the wastewater is adsorbed to the surface of the FerrooMox medium, and then the ferric phosphate is formed on the surface of the FerrooMox medium and adsorbed to the surface of the medium to be removed, so that the FerrooMox medium can promote the function to be recovered for reuse through strong oxidation.
The two characteristics make up the defects of the outdoor fabric fully, the cost has great competitiveness, and the market space is very large. While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The process for removing phosphorus from chemical plant wastewater is characterized by comprising the following steps of:
s1, adjusting the pH value of the wastewater to 2-3;
s2, feeding the regulated wastewater into an FM device for catalytic adsorption; the FM equipment contains a FerroMox medium which is nano-scale catalytic iron oxyhydroxide;
s3, adjusting the pH value of the treated water to be neutral and then directly discharging the treated water;
and S4, testing the FerrooMox medium and recovering the function.
2. The process for removing phosphorus from chemical plant wastewater according to claim 1, wherein: the S4 includes the steps of:
s41, configuring equipment; soaking the FerrooMox medium in pure water, discharging the pure water, and back washing with clean water;
s42, setting the operation parameters of inflow water; the inflow direction is as follows: from top to bottom; the pH value is more than or equal to 5; an operating pressure of at least 2 bar;
s43, testing; starting a filtration test from a flow rate of 20BV/Hr and recording the reading of a test outlet; then gradually reducing the flow rate to 5BV/Hr to find the most suitable flow rate point;
s44, preparing NaOH solution to clean the FerroMox medium; and (4) performing back flushing on the FerrooMox medium to remove dirt and other suspended solids.
3. The process for removing phosphorus from chemical plant wastewater according to claim 1, wherein: the S31 uses a glass column with the diameter of 80mm and the height of 1400mm, and 5 liters of FerrooMox is put into the glass column, and the height of the FerrooMox filter bed is kept at 1 meter.
4. The process for removing phosphorus from chemical plant wastewater according to claim 1, wherein: the S41 soak for at least 1 hour.
5. The process for removing phosphorus from chemical plant wastewater according to claim 1, wherein: the S41 backwash time is at least 30 minutes.
6. The process for removing phosphorus from chemical plant wastewater according to claim 1, wherein: the PH of the S42 is between 6 and 7.
7. The process for removing phosphorus from chemical plant wastewater according to claim 1, wherein: the concentration of the NaOH solution in the S44 is 0.1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010186061.7A CN111268829A (en) | 2020-03-17 | 2020-03-17 | Process for removing phosphorus from chemical plant wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010186061.7A CN111268829A (en) | 2020-03-17 | 2020-03-17 | Process for removing phosphorus from chemical plant wastewater |
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| CN111268829A true CN111268829A (en) | 2020-06-12 |
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| CN202010186061.7A Pending CN111268829A (en) | 2020-03-17 | 2020-03-17 | Process for removing phosphorus from chemical plant wastewater |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101119934A (en) * | 2005-02-16 | 2008-02-06 | 独立行政法人科学技术振兴机构 | Method for producing iron oxyhydroxide and adsorbing material comprising iron oxyhydroxide |
| CN102091591A (en) * | 2010-12-29 | 2011-06-15 | 广东工业大学 | Kieselguhr modified adsorption material and preparation method and application thereof |
| CN108367267A (en) * | 2015-12-25 | 2018-08-03 | 高桥金属株式会社 | Sorbing material particle |
-
2020
- 2020-03-17 CN CN202010186061.7A patent/CN111268829A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101119934A (en) * | 2005-02-16 | 2008-02-06 | 独立行政法人科学技术振兴机构 | Method for producing iron oxyhydroxide and adsorbing material comprising iron oxyhydroxide |
| CN102091591A (en) * | 2010-12-29 | 2011-06-15 | 广东工业大学 | Kieselguhr modified adsorption material and preparation method and application thereof |
| CN108367267A (en) * | 2015-12-25 | 2018-08-03 | 高桥金属株式会社 | Sorbing material particle |
Non-Patent Citations (4)
| Title |
|---|
| 周宾宾等: "羟基氧化铁结合超导磁吸附分离磷及资源化研究", 《水处理技术》 * |
| 孙丽华: "原位生成羟基氧化铁凝聚吸附除磷影响因素研究", 《给水排水》 * |
| 崔蒙蒙等: "人工合成水铁矿对含磷废水的吸附性能", 《环境科学》 * |
| 崔蒙蒙等: "水铁矿吸附磷酸根的影响因素", 《环境工程学报》 * |
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Application publication date: 20200612 |
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