CN113548773A - Industrial park wastewater pretreatment method and system - Google Patents
Industrial park wastewater pretreatment method and system Download PDFInfo
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- 239000002351 wastewater Substances 0.000 title claims abstract description 219
- 238000002203 pretreatment Methods 0.000 title description 4
- 230000020477 pH reduction Effects 0.000 claims abstract description 31
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000002253 acid Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 14
- 238000000265 homogenisation Methods 0.000 claims abstract description 12
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 9
- 238000001556 precipitation Methods 0.000 claims abstract description 5
- 238000002360 preparation method Methods 0.000 claims abstract description 4
- 238000004062 sedimentation Methods 0.000 claims description 49
- 230000007062 hydrolysis Effects 0.000 claims description 29
- 238000006460 hydrolysis reaction Methods 0.000 claims description 29
- 239000000243 solution Substances 0.000 claims description 28
- 238000005345 coagulation Methods 0.000 claims description 25
- 230000015271 coagulation Effects 0.000 claims description 25
- 230000001112 coagulating effect Effects 0.000 claims description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 238000006386 neutralization reaction Methods 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 239000003054 catalyst Substances 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 238000003786 synthesis reaction Methods 0.000 claims description 7
- 238000004065 wastewater treatment Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 3
- 239000012670 alkaline solution Substances 0.000 claims description 2
- 239000003344 environmental pollutant Substances 0.000 abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052760 oxygen Inorganic materials 0.000 abstract description 6
- 239000001301 oxygen Substances 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 3
- 230000003301 hydrolyzing effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 229920002401 polyacrylamide Polymers 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000003311 flocculating effect Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000010907 mechanical stirring Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000002585 base Substances 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
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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
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46176—Galvanic cells
-
- 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
- C02F1/5281—Installations for water purification using chemical 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
- C02F1/66—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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion 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)
- Water Treatment By Electricity Or Magnetism (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a method and a system for pretreating industrial park wastewater, wherein the treatment method comprises the following steps: the homogenizing adjusting tank receives the industrial park wastewater, the wastewater quality is homogenized, the wastewater quantity is adjusted, and then the wastewater after the homogenization treatment is introduced into the PH adjusting tank; and the PH adjusting tank receives the wastewater after the homogenization treatment, adds an acid solution into the wastewater, accurately adjusts the PH value of the wastewater, and allows the acid-adjusted wastewater to flow into the iron-carbon catalysis tank. According to the invention, the wastewater is homogenized by the homogenizing adjusting tank, the flow quantity of the wastewater entering the homogenizing adjusting tank is adjusted at the same time, organic matters in the wastewater are effectively degraded by strong acid and electrolysis, strong base, PAM and PAC (polyaluminium chloride) preparation solution are added into the wastewater, suspended floccules in the wastewater are effectively settled, and finally, the wastewater is subjected to hydrolytic acidification and precipitation treatment, so that COD (chemical oxygen demand) in the wastewater is effectively removedCrPollutants and simultaneously improves the biodegradability index B/C ratio of the wastewater.
Description
Technical Field
The invention belongs to the technical field of wastewater treatment, and particularly relates to a wastewater pretreatment method and system for an industrial park.
Background
The industrial park makes important contribution to the rapid development of the economy of China, and the increase of the industrial park inevitably leads to the increase of the discharge amount of the wastewater of the industrial park, so that the problem of environmental pollution caused by the increase of the industrial park is not ignored.
The industrial park wastewater has complex components, contains conventional pollutants, also contains refractory heterocyclic substances, heavy metal ions and the like, has the characteristics of high pollutant concentration, various pollutant components, difficult degradation, unstable water quality and quantity, high harmfulness and the like, and the conventional wastewater pretreatment process cannot effectively reduce the refractory COD in the industrial park wastewaterCrThe concentration of pollutants and the improvement of the biodegradability of the wastewater in the industrial park cause load impact on the biochemical process and the advanced treatment process of the downstream wastewater.
Therefore, it is necessary to develop a method and a system for pretreating industrial park wastewater to solve the above problems.
Disclosure of Invention
In view of the above problems, the present invention provides a method and a system for pretreating industrial park wastewater to solve the problems mentioned in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a method for pretreating industrial park wastewater, comprising the following steps:
the homogenizing adjusting tank receives the industrial park wastewater, the wastewater quality is homogenized, the wastewater quantity is adjusted, and then the wastewater after the homogenization treatment is introduced into the PH adjusting tank;
the PH adjusting tank receives the wastewater after the homogenization treatment, adds an acid solution into the wastewater, accurately adjusts the PH value of the wastewater, and flows the acid-adjusted wastewater into the iron-carbon catalysis tank;
the iron-carbon catalysis tank is internally added with iron and carbon synthesis catalysts, the acid-regulated wastewater is subjected to electrolytic treatment by an iron-carbon micro-electrolysis technology, and then the electrolyzed wastewater is introduced into a coagulating sedimentation tank;
the coagulation sedimentation tank carries out neutralization, coagulation and sedimentation treatment on the electrolyzed wastewater, and the wastewater after coagulation sedimentation is introduced into the hydrolysis acidification tank;
the hydrolysis acidification tank receives the waste water after coagulation sedimentation, carries out hydrolysis acidification and sedimentation treatment on the waste water, and utilizes a pump to convey the waste water after hydrolysis acidification to the interior of a downstream waste water treatment device.
Further, the homogeneity equalizing basin includes through collecting the pipeline receipt industrial park waste water:
under the normal working condition, the homogenizing adjusting tank receives the industrial park wastewater through a collecting pipeline;
under the condition of an accident working condition, industrial park wastewater enters an accident pool through a collecting pipeline, the wastewater is temporarily stored, and a wastewater lift pump is used for pumping the wastewater with a small flow into a homogenizing adjusting tank.
Further, the normal working condition is CODCr≤500mg/l、TDS≤5000mg/l；
The accident condition is CODCr> 500mg/l or TDS > 5000 mg/l.
Further, the neutralization, coagulation and precipitation treatment of the electrolyzed wastewater in the coagulation sedimentation tank comprises the following steps:
adding an alkaline solution into the neutralization tank, adjusting the pH value of the wastewater, introducing the adjusted wastewater into the coagulation tank, adding PAM and PAC preparation solutions into the coagulation tank to form a large amount of suspended floccules, and then introducing the wastewater in the coagulation tank into the sedimentation tank for sedimentation treatment.
Further, the acid solution is a sulfuric acid solution with a concentration of 98%, and the alkali solution is a sodium hydroxide solution with a concentration of 30%.
The invention also provides a system for pretreating the wastewater in the industrial park,
the device comprises a homogenizing adjusting tank, a pH adjusting tank and a water tank, wherein the homogenizing adjusting tank is used for receiving wastewater of an industrial park, homogenizing the quality of the wastewater, adjusting the quantity of the wastewater and then introducing the wastewater after the homogenizing treatment into the pH adjusting tank;
the PH adjusting tank is used for receiving the wastewater after the homogenization treatment, adding an acid solution into the wastewater, accurately adjusting the PH value of the wastewater, and making the acid-adjusted wastewater flow into the iron-carbon catalysis tank;
the iron-carbon catalysis tank is used for adding iron and carbon synthesis catalysts inside, carrying out electrolytic treatment on the acid-regulated wastewater by an iron-carbon micro-electrolysis technology, and then introducing the electrolyzed wastewater into the coagulating sedimentation tank;
the coagulating sedimentation tank is used for carrying out neutralization, coagulation and sedimentation treatment on the electrolyzed wastewater, and introducing the coagulated and precipitated wastewater into the hydrolysis acidification tank;
and the hydrolysis acidification tank is used for receiving the waste water subjected to coagulating sedimentation, carrying out hydrolysis acidification and sedimentation treatment on the waste water, and conveying the waste water subjected to hydrolysis acidification into a downstream waste water treatment device by using a pump.
Further, the homogeneous regulating tank comprises a normal working condition receiving wastewater and an accident working condition receiving wastewater;
the normal working condition receives wastewater, and is used for receiving the wastewater of the industrial park through a collecting pipeline;
accident operating mode condition is received waste water, gets into the accident pond with industrial park waste water through collecting the pipeline, carries out temporary storage to waste water, utilizes the waste water elevator pump to go into the homogeneity equalizing basin with waste water miniflow.
The invention has the technical effects and advantages that:
1. according to the invention, the wastewater is homogenized by the homogenizing adjusting tank, the flow quantity of the wastewater entering the homogenizing adjusting tank is adjusted at the same time, organic matters in the wastewater are effectively degraded by strong acid and electrolysis, strong base, PAM and PAC (polyaluminium chloride) preparation solution are added into the wastewater, suspended floccules in the wastewater are effectively settled, and finally, the wastewater is subjected to hydrolytic acidification and precipitation treatment, so that COD (chemical oxygen demand) in the wastewater is effectively removedCrPollutants and simultaneously improves the biodegradability index B/C ratio of the wastewater.
2. When the homogeneous regulating tank receives the wastewater under normal working condition and accident working condition, the invention can receive the wastewater according to COD in the wastewaterCrSelect the operating mode condition that is suitable for with TDS actual state, can guarantee the homogeneity effect of waste water, also can inject the water yield that gets into the homogeneity equalizing basin simultaneously, conveniently make the effect of the comprehensive homogeneity of waste water.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 shows a schematic block diagram of an industrial park wastewater pretreatment process of an embodiment of the present invention;
figure 2 shows a process flow diagram for the pretreatment of industrial park wastewater in accordance with an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious 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.
The invention provides a wastewater pretreatment method for an industrial park, which comprises the following steps as shown in figure 1-2:
step one, a homogenizing adjusting tank receives industrial park wastewater, the quality of the wastewater is homogenized, the quantity of the wastewater is adjusted, and then the wastewater after the homogenization is introduced into a PH adjusting tank.
When the homogeneity equalizing basin passes through collecting pipe and receives industrial park waste water, need receive under normal operating mode condition and accident condition two kinds of circumstances.
Under the normal operating condition, the homogenizing adjusting tank receives the industrial park wastewater through the collecting pipeline, and the normal operating condition is CODCrLess than or equal to 500mg/l, TDS less than or equal to 5000mg/l, wherein COD (Chemical Oxygen Demand: Chemical Oxygen Demand), TDS (Total dissolved solids: Total dissolved solids).
Under the condition of an accident working condition, industrial park wastewater enters an accident pool through a collecting pipeline, the wastewater is temporarily stored, and a wastewater lift pump is used for pumping the wastewater with a small flow into a homogenizing adjusting tank. Wherein the small flow is 1/20 that does not exceed the design flow under normal operating conditions. Illustratively, the flow rate of the wastewater received by the homogenizing adjusting tank is X under the normal working condition, and the flow rate of the wastewater received by the homogenizing adjusting tank is less than or equal to X/20 under the accident condition.
When carrying out homogeneity regulation processing to waste water, need stir the processing to waste water, prevent silt at the sedimentation of homogeneity equalizing basin, simultaneously better with waste water misce bene.
And step two, the pH adjusting tank receives the wastewater after the homogenization treatment, adds an acid solution into the wastewater, accurately adjusts the pH value of the wastewater, and flows the acid-adjusted wastewater into the iron-carbon catalysis tank.
Inside the PH equalizing basin, add 98% concentration sulphuric acid solution to waste water inside, adjust the PH value of waste water to between 3-4 to set up air mixing system in the PH equalizing basin, with the better misce bene of acid solution and waste water, accurate regulation waste water PH value, when air mixing system stirs the processing to the waste water of PH equalizing basin inside, air mixing system's air stirring volume is 2-2.5m3/min。
And step three, adding iron and carbon synthesis catalysts in the iron-carbon catalytic tank, carrying out electrolytic treatment on the acid-regulated wastewater by using an iron-carbon micro-electrolysis technology, and then introducing the electrolyzed wastewater into a coagulating sedimentation tank.
The iron-carbon catalysis tank is internally added with filler of iron and carbon synthesis catalyst, the porosity of the filler in the iron-carbon catalysis tank is 0.65, and the wastewater is electrolyzed by using an iron-carbon micro-electrolysis technology so as to achieve the purpose of degrading organic matters.
And step four, carrying out neutralization, coagulation and precipitation treatment on the electrolyzed wastewater by the coagulation sedimentation tank, and introducing the coagulated and precipitated wastewater into the hydrolysis acidification tank.
The inside of the coagulating sedimentation tank comprises a neutralization tank, a coagulation tank and a sedimentation tank, wherein the neutralization tank is arranged at the front end of the coagulating sedimentation tank, an alkali solution is added into the neutralization tank, the alkali solution is a 30% sodium hydroxide solution, the pH value of the wastewater is adjusted, and the pH value of the wastewater is adjusted to be between 7 and 8. The coagulating basin is in coagulating sedimentation pond middle section, and inside the waste water after the adjustment let in the coagulating basin, add PAM (polyacrylamide), PAC (polyaluminium chloride) configuration solution to the coagulating basin inside, thoughtlessly congeal, the flocculation reaction with the suspended solid in the waste water, form suspended solid large granule flocculating constituent. The sedimentation tank is located coagulating sedimentation tank end, then lets in the inside waste water of coagulating sedimentation tank inside sedimentation tank and carries out the sedimentation treatment, effectively subsides suspended solid large granule flocculating constituent to the silt of formation will subside is arranged to mud dewatering device outward.
And step five, the hydrolysis acidification tank receives the wastewater after the coagulation sedimentation, performs hydrolysis acidification and sedimentation treatment on the wastewater, and sends the wastewater after the hydrolysis acidification to the interior of a downstream wastewater treatment device by using a pump.
A mechanical stirring device and a reflux device are arranged in the hydrolysis acidification tank, wherein the input power value of the mechanical stirring device is 6W/h.m3Increasing the B/C (BOD) of the wastewater5: biochemical oxygen demand and COD: chemical oxygen demand), and the reflux device is utilized to ensure that the stirring time of the wastewater in the hydrolysis acidification tank is long, so that the hydrolysis acidification efficiency of the wastewater is ensured to be improved. The end of the hydrolysis acidification tank is provided with a combined horizontal flow sedimentation tank which can effectively remove suspended matters produced in the hydrolysis acidification process, wherein the surface load value of the combined horizontal flow sedimentation tank is 2-2.5m3/(m2.h)。
The invention also provides an industrial park wastewater pretreatment system, which comprises a homogenizing adjusting tank, a pH adjusting tank and a water inlet pipe, wherein the homogenizing adjusting tank is used for receiving the industrial park wastewater, homogenizing the wastewater quality, adjusting the wastewater quantity, and then introducing the wastewater after the homogenizing treatment into the pH adjusting tank; the PH adjusting tank is used for receiving the wastewater after the homogenization treatment, adding an acid solution into the wastewater, accurately adjusting the PH value of the wastewater, and making the acid-adjusted wastewater flow into the iron-carbon catalysis tank; the iron-carbon catalysis tank is used for adding iron and carbon synthesis catalysts inside, carrying out electrolytic treatment on the acid-regulated wastewater by an iron-carbon micro-electrolysis technology, and then introducing the electrolyzed wastewater into the coagulating sedimentation tank; the coagulating sedimentation tank is used for carrying out neutralization, coagulation and sedimentation treatment on the electrolyzed wastewater, and introducing the coagulated and precipitated wastewater into the hydrolysis acidification tank; and the hydrolysis acidification tank is used for receiving the waste water subjected to coagulating sedimentation, carrying out hydrolysis acidification and sedimentation treatment on the waste water, and conveying the waste water subjected to hydrolysis acidification into a downstream waste water treatment device by using a pump.
The homogeneous regulating tank comprises a normal working condition receiving wastewater and an accident working condition receiving wastewater; the normal working condition receives wastewater, and is used for receiving the wastewater of the industrial park through a collecting pipeline; accident operating mode condition is received waste water, gets into the accident pond with industrial park waste water through collecting the pipeline, carries out temporary storage to waste water, utilizes the waste water elevator pump to go into the homogeneity equalizing basin with waste water miniflow.
The invention can realize the homogenization effect on the quality of the wastewater in the industrial park and the regulation effect on the water quantity; COD in industrial park wastewater pretreated by the process flow of the inventionCrThe pollutant removal rate reaches 25-30%, and the biodegradability index B/C ratio of the wastewater can be improved to 0.15-0.2.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A method for pretreating industrial park wastewater is characterized by comprising the following steps: the method comprises the following steps:
the homogenizing adjusting tank receives the industrial park wastewater, the wastewater quality is homogenized, the wastewater quantity is adjusted, and then the wastewater after the homogenization treatment is introduced into the PH adjusting tank;
the PH adjusting tank receives the wastewater after the homogenization treatment, adds an acid solution into the wastewater, accurately adjusts the PH value of the wastewater, and flows the acid-adjusted wastewater into the iron-carbon catalysis tank;
the iron-carbon catalysis tank is internally added with iron and carbon synthesis catalysts, the acid-regulated wastewater is subjected to electrolytic treatment by an iron-carbon micro-electrolysis technology, and then the electrolyzed wastewater is introduced into a coagulating sedimentation tank;
the coagulation sedimentation tank carries out neutralization, coagulation and sedimentation treatment on the electrolyzed wastewater, and the wastewater after coagulation sedimentation is introduced into the hydrolysis acidification tank;
the hydrolysis acidification tank receives the waste water after coagulation sedimentation, carries out hydrolysis acidification and sedimentation treatment on the waste water, and utilizes a pump to convey the waste water after hydrolysis acidification to the interior of a downstream waste water treatment device.
2. The method of pre-treating industrial park wastewater according to claim 1, characterized in that:
the homogeneity equalizing basin passes through collecting pipe and receives industrial park waste water and includes:
under the normal working condition, the homogenizing adjusting tank receives the industrial park wastewater through a collecting pipeline;
under the condition of an accident working condition, industrial park wastewater enters an accident pool through a collecting pipeline, the wastewater is temporarily stored, and a wastewater lift pump is used for pumping the wastewater with a small flow into a homogenizing adjusting tank.
3. The method of pre-treating industrial park wastewater according to claim 2, characterized in that:
the normal working condition is CODCr≤500mg/l、TDS≤5000mg/l；
The accident condition is CODCr> 500mg/l or TDS > 5000 mg/l.
4. The method of pre-treating industrial park wastewater according to claim 1, characterized in that:
the neutralization, coagulation and precipitation treatment of the electrolyzed wastewater in the coagulation sedimentation tank comprises the following steps:
adding an alkaline solution into the neutralization tank, adjusting the pH value of the wastewater, introducing the adjusted wastewater into the coagulation tank, adding PAM and PAC preparation solutions into the coagulation tank to form a large amount of suspended floccules, and then introducing the wastewater in the coagulation tank into the sedimentation tank for sedimentation treatment.
5. The method of pre-treating industrial park wastewater according to claim 4, characterized in that:
the acid solution is a sulfuric acid solution with a concentration of 98%, and the alkali solution is a sodium hydroxide solution with a concentration of 30%.
6. The utility model provides an industrial park pretreatment of waste water system which characterized in that:
the device comprises a homogenizing adjusting tank, a pH adjusting tank and a water tank, wherein the homogenizing adjusting tank is used for receiving wastewater of an industrial park, homogenizing the quality of the wastewater, adjusting the quantity of the wastewater and then introducing the wastewater after the homogenizing treatment into the pH adjusting tank;
the PH adjusting tank is used for receiving the wastewater after the homogenization treatment, adding an acid solution into the wastewater, accurately adjusting the PH value of the wastewater, and making the acid-adjusted wastewater flow into the iron-carbon catalysis tank;
the iron-carbon catalysis tank is used for adding iron and carbon synthesis catalysts inside, carrying out electrolytic treatment on the acid-regulated wastewater by an iron-carbon micro-electrolysis technology, and then introducing the electrolyzed wastewater into the coagulating sedimentation tank;
the coagulating sedimentation tank is used for carrying out neutralization, coagulation and sedimentation treatment on the electrolyzed wastewater, and introducing the coagulated and precipitated wastewater into the hydrolysis acidification tank;
and the hydrolysis acidification tank is used for receiving the waste water subjected to coagulating sedimentation, carrying out hydrolysis acidification and sedimentation treatment on the waste water, and conveying the waste water subjected to hydrolysis acidification into a downstream waste water treatment device by using a pump.
7. The industrial park wastewater pretreatment system of claim 6, characterized in that:
the homogeneous regulating tank comprises a normal working condition receiving wastewater and an accident working condition receiving wastewater;
the normal working condition receives wastewater, and is used for receiving the wastewater of the industrial park through a collecting pipeline;
accident operating mode condition is received waste water, gets into the accident pond with industrial park waste water through collecting the pipeline, carries out temporary storage to waste water, utilizes the waste water elevator pump to go into the homogeneity equalizing basin with waste water miniflow.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103112994A (en) * | 2013-02-06 | 2013-05-22 | 上海问鼎环保科技有限公司 | Method for treating pesticide wastewater |
| CN103466885A (en) * | 2013-09-12 | 2013-12-25 | 安徽省绿巨人环境技术有限公司 | Process for treating wastewater generated in solar silicon wafer production process |
| US20170066671A1 (en) * | 2011-03-21 | 2017-03-09 | Farm Pilot Project Coordination, Inc. | Method and system for treatment of agricultural and industrial wastewaters containing solids and nutrients |
| CN109761455A (en) * | 2019-03-20 | 2019-05-17 | 东华工程科技股份有限公司 | A kind of processing method of synthesis and the class pharmaceuticals industry sewage that ferments |
| CN213739086U (en) * | 2020-10-20 | 2021-07-20 | 南京万瑞环境科技有限公司 | Pharmaceutical wastewater comprehensive treatment device |
-
2021
- 2021-08-09 CN CN202110906091.5A patent/CN113548773A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170066671A1 (en) * | 2011-03-21 | 2017-03-09 | Farm Pilot Project Coordination, Inc. | Method and system for treatment of agricultural and industrial wastewaters containing solids and nutrients |
| CN103112994A (en) * | 2013-02-06 | 2013-05-22 | 上海问鼎环保科技有限公司 | Method for treating pesticide wastewater |
| CN103466885A (en) * | 2013-09-12 | 2013-12-25 | 安徽省绿巨人环境技术有限公司 | Process for treating wastewater generated in solar silicon wafer production process |
| CN109761455A (en) * | 2019-03-20 | 2019-05-17 | 东华工程科技股份有限公司 | A kind of processing method of synthesis and the class pharmaceuticals industry sewage that ferments |
| CN213739086U (en) * | 2020-10-20 | 2021-07-20 | 南京万瑞环境科技有限公司 | Pharmaceutical wastewater comprehensive treatment device |
Non-Patent Citations (1)
| Title |
|---|
| 李怀林: "《企业环境因素的识别与管理》", 30 November 2006, 中国计量出版社 * |
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