CN113072124A - Wastewater treatment method - Google Patents
Wastewater treatment method Download PDFInfo
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- CN113072124A CN113072124A CN202110323834.6A CN202110323834A CN113072124A CN 113072124 A CN113072124 A CN 113072124A CN 202110323834 A CN202110323834 A CN 202110323834A CN 113072124 A CN113072124 A CN 113072124A
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- adsorbent
- alkaline
- alkaline adsorbent
- acetate
- water
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- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 14
- 239000003463 adsorbent Substances 0.000 claims abstract description 71
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000002893 slag Substances 0.000 claims abstract description 33
- 239000002351 wastewater Substances 0.000 claims abstract description 28
- 238000002156 mixing Methods 0.000 claims abstract description 16
- 238000003756 stirring Methods 0.000 claims abstract description 15
- 239000000446 fuel Substances 0.000 claims abstract description 14
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims abstract description 12
- 239000007790 solid phase Substances 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 239000002957 persistent organic pollutant Substances 0.000 claims abstract description 9
- 239000008346 aqueous phase Substances 0.000 claims abstract description 8
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 8
- 231100000719 pollutant Toxicity 0.000 claims abstract description 8
- 238000004064 recycling Methods 0.000 claims abstract description 7
- 230000001172 regenerating effect Effects 0.000 claims abstract description 7
- 239000000126 substance Substances 0.000 claims abstract description 5
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 claims description 20
- 239000012071 phase Substances 0.000 claims description 15
- 239000002028 Biomass Substances 0.000 claims description 8
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 239000003245 coal Substances 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 230000007935 neutral effect Effects 0.000 claims description 2
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 abstract description 16
- VSGNNIFQASZAOI-UHFFFAOYSA-L calcium acetate Chemical compound [Ca+2].CC([O-])=O.CC([O-])=O VSGNNIFQASZAOI-UHFFFAOYSA-L 0.000 abstract description 8
- 239000001639 calcium acetate Substances 0.000 abstract description 8
- 235000011092 calcium acetate Nutrition 0.000 abstract description 8
- 229960005147 calcium acetate Drugs 0.000 abstract description 8
- 235000011056 potassium acetate Nutrition 0.000 abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 5
- 239000003621 irrigation water Substances 0.000 abstract description 2
- 239000000706 filtrate Substances 0.000 description 16
- 239000007791 liquid phase Substances 0.000 description 7
- 239000007787 solid Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 238000000967 suction filtration Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009965 odorless effect Effects 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000002262 irrigation Effects 0.000 description 2
- 238000003973 irrigation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 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
- 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
- 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
-
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D1/00—Fertilisers containing potassium
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D3/00—Calcareous fertilisers
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
- C02F1/004—Processes for the treatment of water whereby the filtration technique is of importance using large scale industrial sized filters
-
- 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
-
- 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
-
- 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
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
-
- 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
- C02F2303/02—Odour removal or prevention of malodour
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/152—Water filtration
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a wastewater treatment method, which comprises the following steps: mixing and stirring an alkaline adsorbent and waste water containing acetic acid in proportion, transferring colored bad-smelling organic pollutants in the waste water into the alkaline adsorbent, reacting alkaline substances in the alkaline adsorbent with the acetic acid to generate acetate, dissolving the acetate in a water body, filtering to obtain an aqueous phase containing the acetate and an alkaline adsorbent wet solid phase containing the colored bad-smelling organic pollutants, mixing the alkaline adsorbent wet solid phase with fuel, feeding the mixture into a boiler hearth to burn the pollutants in the boiler hearth, regenerating and recycling the alkaline adsorbent, and continuously treating the filtered aqueous phase to be close to neutrality by using the alkaline adsorbent. The adsorbent for wastewater treatment in the wastewater treatment method is the slag ash, so that the cost is low, and the aim of treating wastes with processes of wastes against one another is fulfilled; the treated wastewater is rich in elements which are necessary for the growth of crops and are easy to be absorbed and utilized by the crops, such as potassium acetate, calcium acetate and the like, and can be used as farmland irrigation water.
Description
Technical Field
The invention relates to the field of wastewater treatment, in particular to a wastewater treatment method.
Background
Wastewater containing various organic substances such as acetic acid is widely used in industry. The general chemical treatment or biochemical treatment has high cost and poor treatment effect. For example, the water consumption in the furfural production process is large, the wastewater at the bottom of the furfural primary tower contains various organic matters such as acetic acid and the like, the color is dark yellow, and the taste is unpleasant. At present, a furfural plant generally adopts a waste water evaporator to recycle waste water at the bottom of a tower, but the technology has high energy consumption, and if the waste water is not timely treated after being recycled for many times, the waste is accumulated more and more, the production process is adversely affected, and the environmental pollution is easily caused.
Disclosure of Invention
The invention aims to provide a wastewater treatment method, which is characterized in that an alkaline adsorbent is mixed with wastewater containing various organic matters such as acetic acid, colored and smelly organic pollutants in the wastewater are transferred to the adsorbent after the wastewater is fully stirred, and the acetic acid in the wastewater reacts with alkaline sylvite (potassium carbonate and the like) and alkaline oxide (calcium oxide and the like) in the adsorbent to generate soluble acetate such as potassium acetate, calcium acetate and the like which are dissolved in a water body. The alkaline adsorbent is slag ash, which includes, but is not limited to, slag ash of furfural slag fired boilers, slag ash of biomass power plants and slag ash of coal power plants. After fully stirring, mixing and adsorbing, carrying out solid-liquid separation operation, stacking the adsorbent for a period of time, mixing the adsorbent with fuel when the moisture content is reduced to about 15%, inputting the mixture into a hearth for combustion, combusting the adsorbed organic pollutants to generate carbon dioxide and water, vaporizing the adsorbed moisture, regenerating the adsorbent, and discharging for recycling; and continuously carrying out adsorption treatment on the liquid phase obtained by solid-liquid separation by using the adsorbent until the pH value of the liquid phase reaches 6-8, wherein the liquid phase is rich in water-soluble salts such as potassium acetate, calcium acetate and the like, and the elements such as potassium and calcium contained in the liquid phase are necessary elements for crop growth, so that the treated water can be used for farmland irrigation.
The purpose of the invention can be realized by the following technical scheme:
a wastewater treatment process comprising the steps of:
s1 mixing and stirring
Mixing and stirring an alkaline adsorbent and waste water containing acetic acid in proportion, transferring colored odor organic pollutants in the waste water into the alkaline adsorbent, reacting alkaline substances in the alkaline adsorbent with the acetic acid to generate acetate, dissolving the acetate in a water body, filtering to obtain an aqueous phase containing the acetate and an alkaline adsorbent wet solid phase containing the colored odor organic matters, mixing the alkaline adsorbent wet solid phase with fuel, feeding the mixture into a boiler hearth to combust the pollutants in the boiler hearth, regenerating and recycling the alkaline adsorbent, and continuously treating the filtered aqueous phase to be close to neutrality by using the alkaline adsorbent;
s2 filtration
Filtering to obtain an aqueous phase containing acetate and an alkaline adsorbent wet solid phase containing colored and smelly organic matters, mixing the alkaline adsorbent wet solid phase with fuel, feeding the mixture into a boiler hearth to burn pollutants in the boiler hearth, and regenerating and recycling the alkaline adsorbent;
s3 adsorbent treatment
The water phase obtained by filtering is continuously treated to be neutral by adopting an alkaline adsorbent.
Further, the alkaline adsorbent is slag ash, and the slag ash is: slag ash of a furfural slag fired boiler/slag ash of a biomass power plant/slag ash of a coal power plant.
Furthermore, the mass ratio of the acetic acid-containing wastewater to the alkaline adsorbent is 5 (1-10).
Further, the mixing and stirring time is 5-30 minutes.
Further, the wet solid phase of the adsorbent filtered in S2 is mixed with fuel and fed into a furnace for combustion, wherein organic pollutants are combusted, the adsorbed water is vaporized, the adsorbent is regenerated and recycled, and the water phase obtained after solid-liquid separation is continuously adsorbed by the adsorbent until the PH of the water phase is 6-8.
The invention has the beneficial effects that:
1. the adsorbent for wastewater treatment in the wastewater treatment method is the slag ash, so that the cost is low, and the aim of treating wastes with processes of wastes against one another is fulfilled;
2. the wastewater treated by the treatment method of the invention is rich in elements which are necessary for the growth of crops and are easy to be absorbed and utilized by the crops, such as potassium acetate, calcium acetate and the like, and can be used as farmland irrigation water.
Detailed Description
The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. 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.
A method of wastewater treatment comprising the steps of:
s1, taking 100 parts of wastewater raw water containing various organic matters by weight, adding 20-200 parts of adsorbent by mass, and fully stirring for 5-30 minutes to obtain a suspension of the adsorbent and water. The adsorbent is an alkaline adsorbent, and the adsorbent is slag ash, wherein the slag ash comprises but is not limited to slag ash of a furfural slag burning boiler, slag ash of a biomass power plant and slag ash of a coal power plant.
S2, extracting the suspension liquid, performing filter pressing to realize solid-liquid separation, reserving the obtained clear liquid phase for further treatment, stacking the solid adsorbent phase with 20-25% of water for a period of time to volatilize part of the water, mixing the solid adsorbent phase with boiler fuel according to a proportion to burn when the water content is reduced to about 14-16%, burning the adsorbed organic pollutants to generate carbon dioxide and water, vaporizing the adsorbed water, regenerating the adsorbent, and recycling the adsorbent after discharging. The solid adsorbent phase containing 14-16% of water after adsorption accounts for 5-10% of the mass of the boiler fuel, and the regenerated adsorbent after combustion is discharged for cyclic utilization.
S3, continuing to perform the adsorption operation by using the adsorbent on the outlet water of the filter press in S2, wherein the operation steps are the same as the treatment method of the raw wastewater water in S1 and S2. Namely, 100 mass parts of filter press effluent is taken, 20 to 200 mass parts of adsorbent is added, and the mixture is fully stirred for 5 to 30 minutes to obtain the aqueous suspension of the adsorbent. Inputting the mixture into a filter press for solid-liquid separation to obtain a water phase and a solid adsorbent phase, mixing the solid adsorbent phase with boiler fuel according to the proportion in S2, inputting the mixture into a boiler furnace for combustion and regeneration, measuring the pH value of the obtained water phase, stopping further adsorption treatment on the water phase if the pH value reaches about 6-8, and using the water phase as a water solution rich in salts such as potassium acetate, calcium acetate and the like for farmland irrigation. If the pH of the liquid phase is below 6, the treatment with the adsorbent is continued until the pH of the liquid phase reaches 6-8.
Example 1
Taking 100g of tower bottom wastewater (PH 3.14) produced by furfural, adding 20g of biomass power plant slag ash into the tower bottom wastewater, fully stirring for 5min, performing suction filtration to obtain 77mL of filtrate, wherein the pH of the filtrate is 4.5, adding 77g of biomass power plant slag ash into the filtrate, continuously fully stirring for 15min, and performing suction filtration to obtain 60mL of filtrate, wherein the pH of the filtrate is 7.3, and the filtrate is colorless and odorless, and contains 1.2 wt% of potassium acetate and 0.3 wt% of calcium acetate. The adsorbent containing 20% of water is naturally evaporated in the air to remove partial water content to about 15 wt%, and is mixed with fuel to be fed into furnace chamber for combustion, and the adsorbed pollutant is removed, at the same time the slag ash is regenerated.
Example 2
Taking 100g of tower bottom wastewater (PH 3.14) from furfural production, adding 100g of biomass power plant slag ash, stirring thoroughly for 15min, filtering to obtain 79mL of filtrate, adding 79g of biomass power plant slag ash into the filtrate, stirring thoroughly for 15min, and filtering to obtain 61mL of filtrate, wherein the filtrate has pH 7.4, is colorless and odorless, and contains 1.5 wt% of potassium acetate and 0.36 wt% of calcium acetate. The adsorbent containing 22% of water is naturally evaporated in the air to remove part of water to the water content of about 15 wt%, and is mixed with fuel to enter a hearth for combustion, and the slag ash is regenerated while adsorbed pollutants are removed.
Example 3
Taking 100g of tower bottom wastewater (PH 3.14) produced by furfural, adding 200g of coal power plant slag ash into the tower bottom wastewater, fully stirring for 30min, performing suction filtration to obtain 76mL of filtrate, wherein the pH of the filtrate is 4.8, adding 76g of coal power plant slag ash into the filtrate, continuously fully stirring for 15min, and performing suction filtration to obtain 59mL of filtrate, wherein the pH of the filtrate is 7.2, and the filtrate is colorless and odorless, and contains 0.5 wt% of potassium acetate and 0.2 wt% of calcium acetate. The adsorbent containing 25% of water is naturally evaporated in the air to remove partial water content to about 15 wt%, and is mixed with fuel to be fed into furnace chamber to burn, and the adsorbed pollutant can be removed, at the same time the slag ash can be regenerated.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (5)
1. A method for treating wastewater, comprising the steps of:
s1 mixing and stirring
Mixing and stirring an alkaline adsorbent and waste water containing acetic acid in proportion, transferring colored odor organic pollutants in the waste water into the alkaline adsorbent, reacting alkaline substances in the alkaline adsorbent with the acetic acid to generate acetate, dissolving the acetate in a water body, filtering to obtain an aqueous phase containing the acetate and an alkaline adsorbent wet solid phase containing the colored odor organic matters, mixing the alkaline adsorbent wet solid phase with fuel, feeding the mixture into a boiler hearth to combust the pollutants in the boiler hearth, regenerating and recycling the alkaline adsorbent, and continuously treating the filtered aqueous phase to be close to neutrality by using the alkaline adsorbent;
s2 filtration
Filtering to obtain an aqueous phase containing acetate and an alkaline adsorbent wet solid phase containing colored and smelly organic matters, mixing the alkaline adsorbent wet solid phase with fuel, feeding the mixture into a boiler hearth to burn pollutants in the boiler hearth, and regenerating and recycling the alkaline adsorbent;
s3 adsorbent treatment
The water phase obtained by filtering is continuously treated to be neutral by adopting an alkaline adsorbent.
2. The wastewater treatment method according to claim 1, wherein the alkaline adsorbent is slag ash which is: slag ash of a furfural slag fired boiler/slag ash of a biomass power plant/slag ash of a coal power plant.
3. The method for treating wastewater according to claim 1, wherein the mass ratio of the acetic acid-containing wastewater to the alkaline adsorbent is 5 (1-10).
4. The method of claim 1, wherein the mixing and stirring time is 5 to 30 minutes.
5. The wastewater treatment method according to claim 1, wherein the wet solid phase of the adsorbent filtered in S2 is mixed with fuel and fed into a furnace for combustion, organic pollutants are combusted, adsorbed water is vaporized, the adsorbent is regenerated and recycled, and the water phase obtained after solid-liquid separation is continuously adsorbed by the adsorbent until the PH of the water phase is 6-8.
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| CN202110323834.6A CN113072124A (en) | 2021-03-26 | 2021-03-26 | Wastewater treatment method |
| LU500327A LU500327B1 (en) | 2021-03-26 | 2021-06-24 | Wastewater treatment method |
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| CN202110323834.6A CN113072124A (en) | 2021-03-26 | 2021-03-26 | Wastewater treatment method |
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- 2021-03-26 CN CN202110323834.6A patent/CN113072124A/en active Pending
- 2021-06-24 LU LU500327A patent/LU500327B1/en active IP Right Grant
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