CN111925067A - Comprehensive treatment process for pharmaceutical wastewater - Google Patents
Comprehensive treatment process for pharmaceutical wastewater Download PDFInfo
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- CN111925067A CN111925067A CN202010844502.8A CN202010844502A CN111925067A CN 111925067 A CN111925067 A CN 111925067A CN 202010844502 A CN202010844502 A CN 202010844502A CN 111925067 A CN111925067 A CN 111925067A
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- Prior art keywords
- activated carbon
- wastewater
- pharmaceutical wastewater
- treatment process
- treatment
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Classifications
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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
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- C02F1/46—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
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
- C02F2103/026—Treating water for medical or cosmetic purposes
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/44—Time
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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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1263—Sequencing batch reactors [SBR]
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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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
Abstract
The invention discloses a comprehensive treatment process for pharmaceutical wastewater, which comprises the following specific steps: in the early stage, a sequencing batch biofilm reactor (SBBR method) is adopted as a basic treatment method, composite non-woven fabrics including volcanic rocks are selected as fixed fillers, wastewater is treated in a staged mode in the whole operation period of a system, physical adsorption is carried out through activated carbon in a water inlet stage to carry out primary treatment on the wastewater, and in a reaction stage, the activated carbon after primary adsorption of the wastewater is synchronously treated through an electrochemical regeneration method while the wastewater is treated through the SBBR method, so that the cyclic regeneration of the activated carbon is completed. The process provided by the invention has the advantages that the traditional treatment process is optimized, and the cyclic utilization of the coupled activated carbon adsorption is efficiently combined, so that the pollutants in the pharmaceutical wastewater can be effectively removed, the treatment cost of the whole process is greatly reduced, and the influence on the environment is reduced.
Description
Technical Field
The invention belongs to the field of pharmaceutical wastewater treatment and processing, and particularly relates to a comprehensive treatment process for pharmaceutical wastewater.
Background
The pharmaceutical wastewater mainly has the characteristics of high concentration of organic pollutants and suspended matters, difficult biodegradation of substances, more toxic and harmful substances and the like. The advanced treatment technologies for this can be roughly classified into three types, i.e., physical methods, chemical methods, and biological methods. In addition, because the quality requirement of the effluent after advanced treatment is high, a single treatment process is often difficult to meet. But also has advantages and disadvantages, mature biological method technology and low treatment cost, but has poor treatment effect on organic pollutants which are difficult to biodegrade; the chemical method has good treatment effect, but the cost is higher, so in order to ensure the comprehensive effect of treating the pharmaceutical wastewater, further improve the wastewater recovery rate and reduce the environmental pollution, a plurality of processes need to be combined, and the circulating treatment process needs to be optimized, thereby designing, constructing and operating a set of high-efficiency and multi-level advanced pharmaceutical wastewater treatment process system. The method not only promotes the continuous income creation and stable development of related pharmaceutical enterprises, but also reduces the influence and damage to the local ecological environment, implements the policies of energy conservation and emission reduction, meets the requirements of sustainable development and builds an environment-friendly society.
Disclosure of Invention
The object of the present invention is to provide a biological treatment process for pharmaceutical wastewater in response to the problems described in the background.
In order to achieve the purpose, the invention provides the following technical scheme: the water inlet is provided with an active carbon filter tank for primary treatment of pharmaceutical wastewater, the wastewater after primary treatment of active carbon enters a treatment tank, the treatment tank is in a micro-aerobic environment, the tank is filled with volcanic rock wrapped by silica gel non-woven fabric as a composite filler, the wastewater enters a membrane reactor for secondary treatment, and then muddy water mixed liquid in the reactor is completely emptied by a sludge discharge pipe at the bottom. Then pumping in the wastewater, starting an aeration device, and controlling each reactor to finish the treatment of the pharmaceutical wastewater by adopting an intermittent gradually-decreasing aeration mode; in addition, the activated carbon is circularly treated by an electrochemical regeneration method, the activated carbon reaching an adsorption saturation state is placed in a device for carrying out electrochemical reaction by utilizing an electrolysis principle, a reactor is arranged in the device, graphite plates and iron plates are arranged on two sides of the device and are respectively fixed, a cathode and an anode are respectively arranged, electrolyte is filled between two polar plates after the electrolyte enters, activated carbon to be treated for treating wastewater for the first time is filled at the lower part of the reactor, meanwhile, a stirring device is arranged in the system to realize the full mixing of the activated carbon and the electrolyte, and the reactor can normally run when a direct current power supply is added. Under the state of having switched on, the activated carbon can produce polarization, produces respective redox reaction through the negative and positive pole for various pollutants that adsorb in the activated carbon aperture take place to decompose, in order to realize the activated carbon regeneration, and the drainage blanket of pharmacy waste water is placed in to the activated carbon after the regeneration, filters once more, thereby realizes the multi-level purification of the single quantity of pharmacy waste water treatment filter media, reaches higher COD clearance.
Further, a micro-aerobic environment may be set as an aerobic environment.
Further, the number of the activated carbon cycle regeneration and the number of the wastewater treatment can be increased again.
Furthermore, the biological filler can be replaced by spherical light ceramsite.
Furthermore, the back flushing can be carried out according to the running condition of the reactor.
Further, the water flow can be accurately controlled by arranging a metering pump and a valve.
The invention has the beneficial effects that: through optimizing traditional processing procedure, utilize SBBR method and activated carbon adsorption's abundant combination to cyclic utilization behind the high-efficient activated carbon adsorption coupling, not only can effectively get rid of the pollutant in the pharmacy waste water, greatly reduced the treatment cost of whole technology moreover, also alleviateed the pollution to the environment when stabilizing the processing waste water.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Example (b):
a comprehensive treatment process for pharmaceutical wastewater comprises the steps of firstly, arranging an active carbon filter tank at a water inlet to carry out primary treatment on the pharmaceutical wastewater, enabling the adsorption time of primary active carbon to be 12 hours, adding 3g/L of active carbon, enabling the active carbon to be coal-based granular active carbon with 10-20 meshes, washing with deionized water to remove impurities before use, drying overnight at 105 ℃, cooling, and sealing for later use. Waste water after the primary treatment of the activated carbon enters a treatment tank through a water inlet tank, a water inlet pump and a water inlet are started, the treatment tank is in a micro-aerobic environment, silica gel is used as a support, non-woven fabric wrapped volcanic rock is used as composite filler, the non-woven fabric filler and common filler are required to be repeatedly washed by deionized water before use, and then the non-woven fabric filler and the common filler are dried at the temperature of 100-110 ℃ to remove surface impurities, placed in a drying container, and sealed for later use after being cooled. And (3) after the wastewater enters the membrane reactor, carrying out secondary treatment, and then completely emptying the muddy water mixed liquor in the reactor through a sludge discharge pipe at the bottom. Then pumping in the wastewater, starting an aeration device, and controlling each reactor to finish the treatment of the pharmaceutical wastewater by adopting an intermittent gradually-decreasing aeration mode; in addition, the activated carbon is circularly treated by an electrochemical regeneration method, the activated carbon reaching an adsorption saturation state is placed in a device for carrying out electrochemical reaction by utilizing an electrolysis principle, a reactor is arranged in the device, graphite plates and iron plates are arranged on two sides of the device and are respectively fixed, a cathode and an anode are respectively arranged, electrolyte is filled between two polar plates after the electrolyte enters, activated carbon to be treated for treating wastewater for the first time is filled at the lower part of the reactor, meanwhile, a stirring device is arranged in the system to realize the full mixing of the activated carbon and the electrolyte, and the reactor can normally run when a direct current power supply is added. Under the electrified state, the activated carbon can generate a polarization phenomenon, respective redox reactions are generated by the cathode and the anode, so that various pollutants adsorbed in the pore diameter of the activated carbon are decomposed, the activated carbon is regenerated, the electrolyte is a sodium chloride solution with the mass concentration of 2g/L, and the optimal regeneration time is 2 h. And the regenerated active carbon is placed in a drainage layer of the pharmaceutical wastewater for secondary filtration, and the adsorption time of the secondary active carbon is 14 hours. Thereby realizing multi-level purification of single dosage of the filter material for pharmaceutical wastewater treatment and achieving higher COD removal rate.
The above examples describe in detail preferred embodiments of the present patent, but the present patent is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present patent.
Claims (9)
1. The comprehensive treatment process for the pharmaceutical wastewater is characterized by mainly comprising the steps of treating the pharmaceutical wastewater by adopting a Sequencing Batch Biofilm Reactor (SBBR) in the early stage and synchronously treating the activated carbon after primary wastewater adsorption by an electrochemical regeneration method.
2. The comprehensive treatment process for pharmaceutical wastewater according to claim 1, wherein the process comprises the following specific operation steps: the water inlet is provided with an active carbon filter tank for primary treatment of pharmaceutical wastewater, the wastewater after primary treatment of active carbon enters a treatment tank, the treatment tank is in a micro-aerobic environment, the tank is filled with volcanic rock wrapped by silica gel non-woven fabric as a composite filler, the wastewater enters a membrane reactor for secondary treatment, and then muddy water mixed liquid in the reactor is completely emptied by a sludge discharge pipe at the bottom. Then pumping in the wastewater, starting an aeration device, and controlling each reactor to finish the treatment of the pharmaceutical wastewater by adopting an intermittent gradually-decreasing aeration mode; in addition, the activated carbon is circularly treated by an electrochemical regeneration method, the activated carbon reaching an adsorption saturation state is placed in a device for carrying out electrochemical reaction by utilizing an electrolysis principle, a reactor is arranged in the device, graphite plates and iron plates are arranged on two sides of the device and are respectively fixed, a cathode and an anode are respectively arranged, electrolyte is filled between two polar plates after the electrolyte enters, activated carbon to be treated for treating wastewater for the first time is filled at the lower part of the reactor, meanwhile, a stirring device is arranged in the system to realize the full mixing of the activated carbon and the electrolyte, and the reactor can normally run when a direct current power supply is added. Under the state of having switched on, the activated carbon can produce polarization, produces respective redox reaction through the negative and positive pole for various pollutants that adsorb in the activated carbon aperture take place to decompose, in order to realize activated carbon regeneration, and the drainage blanket of pharmacy waste water is placed in to the activated carbon after the regeneration, filters once more, thereby realizes the multi-level purification of the single quantity of pharmacy waste water treatment filter media.
3. The comprehensive treatment process for pharmaceutical wastewater according to claim 1, wherein the electrochemical regeneration method has the advantages of short regeneration time, high regeneration efficiency, low loss of activated carbon, good versatility and low secondary pollution.
4. The comprehensive treatment process for pharmaceutical wastewater according to claim 1, wherein the non-woven fabric filler and the common filler are repeatedly washed with deionized water before use, dried at 100-110 ℃ to remove surface impurities, placed in a drying container, cooled and sealed for later use.
5. The comprehensive treatment process for pharmaceutical wastewater according to claim 1, wherein the activated carbon is coal-based granular activated carbon of 10-20 meshes, and is washed by deionized water to remove impurities before use, dried overnight at 105 ℃, cooled and sealed for later use.
6. The comprehensive treatment process for pharmaceutical wastewater according to claim 1, wherein the electrochemical regeneration device employs iron sheets and graphite sheets as an anode and a cathode for electrochemical regeneration, respectively. The electrolyte is a sodium chloride solution with the mass concentration of 2 g/L.
7. The comprehensive treatment process for pharmaceutical wastewater according to claim 1, wherein the biofilm filler is constructed by wrapping volcanic rocks with a silicone rubber tube as a support and a polyethylene non-woven fabric as a main body to realize multi-layer purification.
8. The comprehensive treatment process for pharmaceutical wastewater according to claim 1, wherein the filler is a suspension filler, has a large specific surface area, has a suitable density, and is easy to form a film, so that the filler is more fully contacted with the pharmaceutical wastewater, and the secondary effluent is better in treatment effect than a fixed filler manner.
9. The comprehensive treatment process for pharmaceutical wastewater according to claim 1, wherein the first activated carbon adsorption time is 12 hours, and the second activated carbon adsorption time is 14 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010844502.8A CN111925067A (en) | 2020-08-20 | 2020-08-20 | Comprehensive treatment process for pharmaceutical wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010844502.8A CN111925067A (en) | 2020-08-20 | 2020-08-20 | Comprehensive treatment process for pharmaceutical wastewater |
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| CN111925067A true CN111925067A (en) | 2020-11-13 |
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| CN202010844502.8A Pending CN111925067A (en) | 2020-08-20 | 2020-08-20 | Comprehensive treatment process for pharmaceutical wastewater |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103755015A (en) * | 2014-01-03 | 2014-04-30 | 浙江农林大学 | Novel sewage treatment process SBBR (Sequencing Batch Biofilm Reactor) process |
| CN104772130A (en) * | 2015-04-07 | 2015-07-15 | 南通科技职业学院 | Activated carbon in-situ regeneration technology and device preparation for organic wastewater treatment |
| CN107098546A (en) * | 2017-07-06 | 2017-08-29 | 安徽三环水泵有限责任公司 | A kind of pharmacy sewage processing method |
| CN107721078A (en) * | 2017-11-09 | 2018-02-23 | 四川弘毅智慧知识产权运营有限公司 | A kind of biological membrane biological sewage-treatment plant |
| CN110627302A (en) * | 2018-06-25 | 2019-12-31 | 扬州市扬子江运动器材有限公司 | Pharmacy sewage environmental protection processing system |
-
2020
- 2020-08-20 CN CN202010844502.8A patent/CN111925067A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103755015A (en) * | 2014-01-03 | 2014-04-30 | 浙江农林大学 | Novel sewage treatment process SBBR (Sequencing Batch Biofilm Reactor) process |
| CN104772130A (en) * | 2015-04-07 | 2015-07-15 | 南通科技职业学院 | Activated carbon in-situ regeneration technology and device preparation for organic wastewater treatment |
| CN107098546A (en) * | 2017-07-06 | 2017-08-29 | 安徽三环水泵有限责任公司 | A kind of pharmacy sewage processing method |
| CN107721078A (en) * | 2017-11-09 | 2018-02-23 | 四川弘毅智慧知识产权运营有限公司 | A kind of biological membrane biological sewage-treatment plant |
| CN110627302A (en) * | 2018-06-25 | 2019-12-31 | 扬州市扬子江运动器材有限公司 | Pharmacy sewage environmental protection processing system |
Non-Patent Citations (2)
| Title |
|---|
| 李旭东 等著: "《废水处理技术及工程应用》", 30 June 2003 * |
| 郭宇: "生物法-活性炭组合工艺深度处理制药废水的研究", 《中国优秀硕士学位论文全文数据库工程科技I辑》 * |
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Application publication date: 20201113 |