CN216972273U - Acid-base wastewater recovery system - Google Patents
Acid-base wastewater recovery system Download PDFInfo
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- CN216972273U CN216972273U CN202123251596.7U CN202123251596U CN216972273U CN 216972273 U CN216972273 U CN 216972273U CN 202123251596 U CN202123251596 U CN 202123251596U CN 216972273 U CN216972273 U CN 216972273U
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Abstract
The utility model relates to an acid-base wastewater recovery system, which comprises a pretreatment system and a recycling system; the recycling system comprises a CR system, an RO reverse osmosis system and a filtering system; the CR system adopts the combination of an aerobic tank and an MBR membrane bioreactor; the RO reverse osmosis system is used for generating fresh water and concentrated water, the fresh water enters the filtering system for filtering and recycling, and the concentrated water is discharged after reaching the standard; the utility model relates to the treatment of acid-base wastewater, and the acid-base wastewater has relatively simple pollutant components and relatively simple pollutant concentration, so that the acid-base wastewater directly enters a recycling system after being subjected to simple pH regulation, the COD (chemical oxygen demand), the hardness and the TOC (total organic carbon) are greatly reduced, and the effluent quality is ensured.
Description
Technical Field
The utility model relates to the technical field of wastewater treatment, in particular to an acid-base wastewater recovery system.
Background
In the field of wastewater treatment of acid-base wastewater, pollutant components are relatively simple, pollution concentration is relatively low, the original treatment method adopts pH adjustment, coagulation and flocculation processes, COD and other pollutants are reduced, simultaneously hardness and salinity of water are increased, and the reuse of the acid-base wastewater is not paid for, so that an acid-base wastewater recovery system is developed, and a technical scheme which is the same as or similar to that of the acid-base wastewater recovery system is not found through retrieval.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: provides an acid-base wastewater recovery system to solve the problem that the hardness and salinity of treated reclaimed water are increased by the traditional treatment method.
The technical scheme of the utility model is as follows: an acid-base wastewater recovery system comprises a pretreatment system and a recycling system; the recycling system comprises a CR system, an RO reverse osmosis system and a filtering system; the CR system adopts the combination of an aerobic tank and an MBR membrane bioreactor; the RO reverse osmosis system is used for generating fresh water and concentrated water, the fresh water enters the filtering system for filtering and recycling, and the concentrated water is discharged after reaching the standard.
Preferably, the recycling system comprises a CR system, a softener, a cartridge filter, an RO reverse osmosis system, an RO fresh water tank, an activated carbon filter and an UV sterilizer which are sequentially connected; wherein, the cartridge filter and the active carbon filter form a filtering system.
Preferably, the pretreatment system comprises an acid-base relay pool, an acid-base accident pool, an acid-base collecting pool and an acid-base adjusting pool, and the acid-base adjusting pool is connected with the CR system.
Compared with the prior art, the utility model has the advantages that:
the utility model relates to the treatment of acid-base wastewater, and the acid-base wastewater has relatively simple pollutant components and relatively simple pollutant concentration, so that the acid-base wastewater directly enters a recycling system after being subjected to simple pH adjustment, the COD, the hardness and the TOC are greatly reduced, and the effluent quality is ensured.
Drawings
The utility model is further described with reference to the following figures and examples:
FIG. 1 is a block diagram of an acid-base wastewater recovery system according to the present invention.
Wherein: 1. a pre-treatment system; 2. a recycling system.
Detailed Description
The present invention will be further described in detail with reference to the following specific examples:
as shown in fig. 1, an acid-base wastewater recycling system includes a pretreatment system 1 and a recycling system 2.
The pretreatment system 1 comprises an acid-base relay tank, an acid-base accident tank, an acid-base collecting tank and an acid-base adjusting tank, and because the pollutant components of the acid-base wastewater are relatively simple and the pollutant concentration is relatively simple, the pretreatment system 1 can simply adjust the pH of the acid-base wastewater to subacidity, improve the desalination rate of the wastewater and reduce the risk of membrane pollution caused by subsequent hardness scaling.
The recycling system 2 comprises a CR system, a softener, a cartridge filter, an RO reverse osmosis system, an RO fresh water tank, an activated carbon filter and an UV sterilizer which are sequentially connected; wherein:
the CR system is connected with the acid-base equalizing basin, adopts the combination of good oxygen pond and MBR membrane bioreactor, because the sour alkali waste water of preliminary treatment contains a small amount of surfactant active, leads to COD to be higher, can increase the pollution risk of follow-up membrane system, therefore the CR system can not introduce other pollutants, does not improve under the prerequisite of other physicochemical index, utilizes the synergism of good oxygen pond and MBR membrane bioreactor, and the purpose is to reduce COD concentration, reduces the contaminated risk of follow-up membrane.
The softener replaces calcium and magnesium ions in water by using ion exchange resin, reduces the hardness of wastewater, and reduces the risk of RO membrane pollution in an RO reverse osmosis system caused by hardness scaling.
The cartridge filter and the activated carbon filter form a filtering system, wherein the cartridge filter is arranged in front of the RO system to prevent impurities from entering the RO system, so that the stable operation of the RO system is guaranteed; after the activated carbon is placed in the RO reverse osmosis system, trace COD and ammonia nitrogen contained in the generated fresh water are adsorbed, and the quality of the effluent water is ensured; and finally enters a UV sterilizer to kill microorganisms in the water and reduce TOC.
The RO reverse osmosis system utilizes the selective permeability characteristic of an RO membrane, under the action of external pressure, solvent water enters a fresh water end through the RO membrane to form desalted fresh water, and electrolyte solute is trapped in a concentrated water end to form concentrated water; the quality of the fresh water is similar to that of the tap water, and the fresh water enters an RO fresh water tank and is recycled through subsequent filtration and sterilization; the concentrated water is discharged after reaching the standard.
According to the wastewater treatment mode of the embodiment, the quality of the treated fresh water meets the following requirements:
| serial number | Index (I) | Standard of running | Reuse water | |
| 1 | CODmn(mg/l) | ≦3 | 2 | |
| 2 | Ammonia nitrogen (mg/l) | ≦0.5 | 0.4 | |
| 3 | Total nitrogen (mg/l) | ≦1.5 | 1.2 | |
| 4 | Conductivity (mu s/cm2) | ≦400 | 50 | |
| 5 | Total hardness (mg/l) | ≦250 | 5 | |
| 6 | Fluoride (mg/l) | ≦1.0 | 0.5 | |
| 7 | NTU | ≦0.5 | 0.2 | |
| 8 | TOC | ≦3 | 2 | |
| 9 | Cl- | ≦250 | 30 | |
| 10 | SO4 2- | ≦250 | 25 | |
| 11 | Ca | ≦50 | 3 | |
| 12 | Mg | ≦10 | 2 | |
| 13 | Al | ≦0.2 | 0.2 | |
| 14 | Ba | ≦0.7 | 0.1 | |
| 15 | P | ≦0.1 | 0.1 | |
| 16 | Cu | ≦1.0 | 0.1 | |
| 17 | B | ≦0.5 | 0.5 | |
| 18 | Color intensity | ≦10 | 5 |
Therefore, the method can effectively treat acid-base wastewater, greatly reduce COD, hardness and TOC, and ensure the quality of effluent water.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore intended that the present embodiments be considered in all respects as illustrative and not restrictive, the scope of the utility model 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.
Claims (3)
1. The utility model provides an acid-base waste water recovery system which characterized in that: comprises a pretreatment system and a recycling system which are connected in sequence; the recycling system comprises a CR system, an RO reverse osmosis system and a filtering system which are sequentially connected; the CR system adopts the combination of an aerobic tank and an MBR membrane bioreactor; the RO reverse osmosis system is used for generating fresh water and concentrated water, the fresh water enters the filtering system for filtering and recycling, and the concentrated water is discharged after reaching the standard.
2. The acid-base wastewater recovery system of claim 1, wherein: the recycling system comprises a CR system, a softener, a security filter, an RO reverse osmosis system, an RO fresh water tank, an activated carbon filter and an UV sterilizer which are sequentially connected; wherein, the cartridge filter and the active carbon filter form a filtering system.
3. The acid-base wastewater recovery system of claim 1, wherein: the pretreatment system comprises an acid-base relay pool, an acid-base accident pool, an acid-base collecting pool and an acid-base adjusting pool, wherein the acid-base adjusting pool is connected with the CR system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123251596.7U CN216972273U (en) | 2021-12-22 | 2021-12-22 | Acid-base wastewater recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123251596.7U CN216972273U (en) | 2021-12-22 | 2021-12-22 | Acid-base wastewater recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216972273U true CN216972273U (en) | 2022-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123251596.7U Active CN216972273U (en) | 2021-12-22 | 2021-12-22 | Acid-base wastewater recovery system |
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| CN (1) | CN216972273U (en) |
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2021
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