CN112047572A - Method for treating phenol-containing wastewater - Google Patents
Method for treating phenol-containing wastewater Download PDFInfo
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- CN112047572A CN112047572A CN202010935061.2A CN202010935061A CN112047572A CN 112047572 A CN112047572 A CN 112047572A CN 202010935061 A CN202010935061 A CN 202010935061A CN 112047572 A CN112047572 A CN 112047572A
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- wastewater
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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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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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
- C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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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
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
- C02F2101/345—Phenols
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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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)
- Separation Using Semi-Permeable Membranes (AREA)
- Activated Sludge Processes (AREA)
Abstract
The invention relates to the technical field of wastewater treatment, in particular to a method for treating phenol-containing wastewater. The method comprises the following steps: a) sending the phenol-containing wastewater into a regulating reservoir for stirring and pre-aeration treatment, and sending the treated water into an air floatation treatment device; b) separating suspended matters from the wastewater in an air floatation treatment device, and sending the wastewater after removing the suspended matters into a wet oxidation reactor; c) oxidizing organic matters in the wastewater by using a wet oxidation reactor, and feeding the oxidized wastewater into an A/O biochemical pool; d) the A/O biochemical tank is used for removing organic matters, nitrogen and phosphorus from the wastewater; e) the water in the clean water tank is sent into the continuous membrane filtration system for filtration to obtain reusable water, and the filtered concentrated water is reversely conveyed back into the clean water tank. The invention treats the phenol-containing wastewater by a wet oxidation method, and has stable water outlet effect and good biodegradability. The water is subjected to circulating filtration through the continuous membrane filtration system, so that the water quality of the produced water is improved, and the sludge discharge efficiency is improved.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to a method for treating phenol-containing wastewater.
Background
The phenol-containing wastewater has wide sources, such as coking wastewater, coal gasification wastewater, petrochemical wastewater and wastewater produced by high polymer materials. The industries of pharmaceutical pesticide production and the like also generate a large amount of high-concentration phenol-containing wastewater. The highest allowable concentration of phenol in water specified by the general national standard is extremely low (the water content of drinking water in China is less than or equal to 0.002mg/L, and the water content of drinking water in the United states is less than or equal to 0.001 mg/L). Various problems exist in the traditional treatment technology at present; the extraction method has difficulty in reaching standards and large solvent consumption; the adsorption method requires high-degree pretreatment, and the adsorbent is expensive; the chemical oxidation method has good treatment effect, but the cost of the oxidant is high.
Disclosure of Invention
In order to solve the technical problems described in the background art, the invention provides a method for treating phenol-containing wastewater, which treats phenol-containing wastewater by a wet oxidation method and has stable effluent effect and good biodegradability. The water is subjected to circulating filtration through the continuous membrane filtration system, so that the water quality of the produced water is improved, and the sludge discharge efficiency is improved.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a method for treating phenolic wastewater comprises the following steps:
a) sending the phenol-containing wastewater into a regulating reservoir for stirring and pre-aeration treatment, and sending the treated water into an air floatation treatment device;
b) separating suspended matters from the wastewater in an air floatation treatment device, sending the wastewater after removing the suspended matters into a wet oxidation reactor, and carrying out outward treatment on sludge discharged by the air floatation treatment device;
c) oxidizing organic matters in the wastewater by using a wet oxidation reactor, and feeding the oxidized wastewater into an A/O biochemical pool;
d) the A/O biochemical tank is used for removing organic matters, nitrogen and phosphorus from the wastewater, and the treated wastewater is sent into a clear water tank;
e) the water in the clean water tank is sent into the continuous membrane filtration system for filtration to obtain reusable water after filtration, the filtered concentrated water is reversely conveyed back into the clean water tank, and the sludge discharged from the clean water tank is transported outside for treatment.
Specifically, the continuous membrane filtration system is a filtration device using an inorganic ceramic membrane as a filtration membrane tube.
The invention has the beneficial effects that: the invention provides a method for treating phenolic wastewater, which treats the phenolic wastewater by a wet oxidation method and has stable effluent effect and good biodegradability. The water is subjected to circulating filtration through the continuous membrane filtration system, so that the water quality of the produced water is improved, and the sludge discharge efficiency is improved.
Drawings
The invention is further described with reference to the following figures and examples.
FIG. 1 is a schematic diagram of the framework of the present invention;
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams illustrating only the basic structure of the invention in a schematic manner, and thus show only the constitution related to the invention.
Fig. 1 is a schematic diagram of the framework of the present invention.
As shown in the attached figure 1, the method for treating the phenol-containing wastewater comprises the following steps:
a) sending the phenol-containing wastewater into a regulating reservoir for stirring and pre-aeration treatment, and sending the treated water into an air floatation treatment device;
b) separating suspended matters from the wastewater in an air floatation treatment device, sending the wastewater after removing the suspended matters into a wet oxidation reactor, and carrying out outward treatment on sludge discharged by the air floatation treatment device;
c) oxidizing organic matters in the wastewater by using a wet oxidation reactor, and feeding the oxidized wastewater into an A/O biochemical pool;
d) the A/O biochemical tank is used for removing organic matters, nitrogen and phosphorus from the wastewater, and the treated wastewater is sent into a clear water tank;
e) the water in the clean water tank is sent into the continuous membrane filtration system for filtration to obtain reusable water after filtration, the filtered concentrated water is reversely conveyed back into the clean water tank, and the sludge discharged from the clean water tank is transported outside for treatment.
The continuous membrane filtration system is a filtration device which takes an inorganic ceramic membrane as a filtration membrane tube.
The air floating treatment device is characterized in that air is introduced into water in a micro-bubble mode, the micro-bubbles are adhered to particles suspended in the water to form a water-gas-particle three-phase mixed system, and after the particles are adhered with the bubbles, the particles float upwards with the density smaller than that of the water to form a scum layer which is separated from the water.
The A/O biochemical pool is used for treating wastewater by using an AO process, and A (Anaerobic) is an anaerobic section and is used for removing nitrogen and phosphorus; o (oxic) is an aerobic section for removing organic matter from water. Its advantages are that it not only degrades organic pollutant, but also has a certain function of removing nitrogen and phosphorus, and the anaerobic hydrolysis technology is used as the pretreatment of activated sludge, so the AO method is an improved activated sludge method.
The wet oxidation is to oxidize organic substances in water into small molecular organic substances or inorganic substances by using gaseous oxygen (usually air) as an oxidant under the conditions of high temperature (120-320 ℃) and high pressure (0.5-20 MPa).
The wet oxidation method has better effect for treating the phenol-containing wastewater, stable water outlet effect and good biodegradability, the not-too-high water inlet concentration can be directly discharged after treatment, and when the water inlet concentration is extremely high, a biochemical method can be added at the rear end.
The continuous membrane filtration system is arranged behind the A/O biochemical pool, the tail end continuous membrane filtration system replaces the traditional secondary sedimentation pool structure to carry out solid-liquid separation on effluent of the biochemical pool, the continuous membrane filtration system is integrally skid-mounted equipment, the occupied area is small, additional supporting equipment and supporting construction contents are not needed, the continuous membrane filtration system is adopted, the solid-liquid separation efficiency can be accelerated, the operation input cost is reduced, an inorganic ceramic membrane is adopted inside the continuous membrane filtration system, the membrane aperture can be selected according to the water quality requirement, the effluent water quality is guaranteed, the continuous membrane filtration system adopts a circulating filtration mode, unattended filtration can be carried out for a long time, the filtration efficiency is high, mud is discharged only from the bottom of a water pool or a water tank through the mud discharge system, and the mud discharge operation is convenient and rapid.
In light of the foregoing description of preferred embodiments according to the invention, many modifications and variations can be made by the worker skilled in the art without departing from the scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (2)
1. A method for treating phenolic wastewater is characterized by comprising the following steps: the method comprises the following steps:
a) sending the phenol-containing wastewater into a regulating reservoir for stirring and pre-aeration treatment, and sending the treated water into an air floatation treatment device;
b) separating suspended matters from the wastewater in an air floatation treatment device, sending the wastewater after removing the suspended matters into a wet oxidation reactor, and carrying out outward treatment on sludge discharged by the air floatation treatment device;
c) oxidizing organic matters in the wastewater by using a wet oxidation reactor, and feeding the oxidized wastewater into an A/O biochemical pool;
d) the A/O biochemical tank is used for removing organic matters, nitrogen and phosphorus from the wastewater, and the treated wastewater is sent into a clear water tank;
e) the water in the clean water tank is sent into the continuous membrane filtration system for filtration to obtain reusable water after filtration, the filtered concentrated water is reversely conveyed back into the clean water tank, and the sludge discharged from the clean water tank is transported outside for treatment.
2. The method for treating phenol-containing wastewater according to claim 1, characterized in that: the continuous membrane filtration system is a filtration device taking an inorganic ceramic membrane as a filtration membrane tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010935061.2A CN112047572A (en) | 2020-09-08 | 2020-09-08 | Method for treating phenol-containing wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010935061.2A CN112047572A (en) | 2020-09-08 | 2020-09-08 | Method for treating phenol-containing wastewater |
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| CN112047572A true CN112047572A (en) | 2020-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010935061.2A Pending CN112047572A (en) | 2020-09-08 | 2020-09-08 | Method for treating phenol-containing wastewater |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885557A (en) * | 2010-06-24 | 2010-11-17 | 山东潍坊润丰化工有限公司 | Method for recovering and treating phenolic wastewater |
| CN103043871A (en) * | 2013-01-18 | 2013-04-17 | 信发集团有限公司 | Phenol-contained wastewater treatment method and phenol-contained wastewater treatment system |
| CN107721081A (en) * | 2017-11-22 | 2018-02-23 | 江苏省环境科学研究院 | A kind of innocuity disposal system and method for chlorophenols waste water |
-
2020
- 2020-09-08 CN CN202010935061.2A patent/CN112047572A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885557A (en) * | 2010-06-24 | 2010-11-17 | 山东潍坊润丰化工有限公司 | Method for recovering and treating phenolic wastewater |
| CN103043871A (en) * | 2013-01-18 | 2013-04-17 | 信发集团有限公司 | Phenol-contained wastewater treatment method and phenol-contained wastewater treatment system |
| CN107721081A (en) * | 2017-11-22 | 2018-02-23 | 江苏省环境科学研究院 | A kind of innocuity disposal system and method for chlorophenols waste water |
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Application publication date: 20201208 |