CN112624510A - Sewage advanced treatment combined device and process - Google Patents
Sewage advanced treatment combined device and process Download PDFInfo
- Publication number
- CN112624510A CN112624510A CN202011539882.0A CN202011539882A CN112624510A CN 112624510 A CN112624510 A CN 112624510A CN 202011539882 A CN202011539882 A CN 202011539882A CN 112624510 A CN112624510 A CN 112624510A
- Authority
- CN
- China
- Prior art keywords
- component
- catalyst
- water
- photocatalytic oxidation
- sewage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- 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
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
-
- 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
Landscapes
- 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)
- Physical Water Treatments (AREA)
Abstract
本发明公开了一种污水深度处理组合装置和工艺，装置中，循环式异相光催化氧化组件对输入的污水进行光催化氧化反应；斜板沉淀池组件将流入水体中的部分催化剂进行截留；脱气反应组件对由斜板沉淀组件流入的上清液进行曝气并调节pH值至中性；高效催化剂分离组件对由脱气反应组件流入水体通过助凝剂和絮凝剂进行絮体和催化剂分离；曝气生物滤池对由高效催化剂分离组件流入的上清液进行生物氧化降解和过滤，并将出水输出至清水池。通过本发明的技术方案，循环式异相光催化氧化工艺与曝气生物滤池相结合，利用光催化氧化反应、生物氧化作用、生物吸附和过滤共同对污水进行处理，实现污水水质全面提升，达到新排放标准的要求。
The invention discloses a combined device and process for advanced sewage treatment. In the device, a cyclic heterogeneous photocatalytic oxidation component performs photocatalytic oxidation reaction on the input sewage; the inclined plate sedimentation tank component intercepts part of the catalyst flowing into the water body; The degassing reaction component aerates the supernatant liquid flowing in from the inclined plate precipitation component and adjusts the pH value to neutrality; the high-efficiency catalyst separation component flocculates and catalyzes the inflowing water from the degassing reaction component through the coagulant and flocculant. Separation; the aerated biological filter conducts biooxidative degradation and filtration of the supernatant flowing in from the high-efficiency catalyst separation component, and outputs the effluent to the clean water tank. Through the technical scheme of the present invention, the cyclic heterogeneous photocatalytic oxidation process is combined with the aerated biological filter, and the photocatalytic oxidation reaction, biological oxidation, biological adsorption and filtration are used to treat the sewage together, so as to realize the overall improvement of the sewage quality. Meet the requirements of the new emission standards.
Description
Technical Field
The invention relates to the technical field of pollution treatment, in particular to a sewage advanced treatment combined device and a sewage advanced treatment combined process.
Background
In order to adapt to a series of municipal sewage plants and new industrial wastewater pollutant discharge standards to achieve standard wastewater discharge and reduce the influence on the environment of a receiving water body, the effluent after the existing biochemical treatment needs to be further deeply treated. Further comprehensively upgrading biochemical effluent, wherein important pollutants comprise COD (Chemical Oxygen Demand), ammonia nitrogen, total phosphorus, ss (suspended solids) and the like; for some pollutants which are difficult to be degraded biologically, advanced treatment is mostly carried out by adopting Fenton, ozone and other advanced oxidation technologies.
In the prior art, the Fenton oxidation technology usually needs to pre-acidify the sewage in the using process, the pH value of the reaction is controlled between 2 and 4, a large amount of alkali liquor needs to be consumed when the pH value is adjusted back after the reaction is finished, the adding of acid and alkali in the process greatly improves the system operation cost, in addition, the adding of acid and alkali can introduce partial soluble salt into a system, the salt content of effluent is improved, and the project application which has requirements on the salt content in the emission standard is limited.
On the basis, Fenton-like oxidation systems such as photo-Fenton are developed, the pH application range is effectively expanded, and the oxidation efficiency of the system is improved. The circulating heterogeneous photocatalytic oxidation technology is a Fenton-like photocatalytic oxidation system taking an iron-based nano material as a catalyst. By using the iron-based catalyst, the pH of the system reaction is increased to about 4-6.5, and meanwhile, the cyclic conversion of the catalyst and the utilization efficiency of the oxidant are realized through the catalytic action of ultraviolet light, the generation of hydroxyl radicals is promoted, the deep oxidation of organic matters is realized, COD is removed, and the biodegradability of sewage is improved.
Disclosure of Invention
Aiming at the problems, the invention provides a sewage advanced treatment combined device and a sewage advanced treatment combined process, wherein a circulating heterogeneous photocatalytic oxidation process is combined with an aeration biological filter, part of COD is removed through photocatalytic oxidation reaction, meanwhile, biologically-nondegradable macromolecular pollutants in a system can be gradually decomposed into micromolecules, the biodegradability of sewage is improved, and ammonia nitrogen, total phosphorus and ss in a water body are further removed through the combination with the aeration biological filter subsequently through the high-efficiency biological oxidation action and the biological adsorption and filtration action of the aeration biological filter, so that the comprehensive improvement of the sewage quality is realized, and the requirement of a new discharge standard is met.
In order to realize the aim, the invention provides a sewage advanced treatment combined device, which comprises a circulating heterogeneous photocatalytic oxidation component, an inclined plate sedimentation tank component, a degassing reaction component, a high-efficiency catalyst separation component, a biological aerated filter and a clean water tank which are sequentially connected through pipelines; the circulating heterogeneous photocatalytic oxidation component performs photocatalytic oxidation reaction on input sewage; the inclined plate sedimentation tank component intercepts part of the catalyst flowing into the water body; the degassing reaction component aerates the supernatant flowing in from the inclined plate sedimentation component and adjusts the pH value to be neutral; the high-efficiency catalyst separation component is used for carrying out floc separation on the water flowing into the degassing reaction component through a coagulant aid and a flocculating agent; the biological aerated filter carries out biological oxidation degradation and filtration on the supernatant fluid flowing in from the high-efficiency catalyst separation component, and outputs the effluent water to the clean water tank.
In the above technical scheme, preferably, the circulating heterogeneous photocatalytic oxidation assembly includes an ultraviolet light source system, a catalyst feeding device, an oxidant feeding device, a pH agent feeding device and a flow impeller, the ultraviolet light source system is a plurality of ultraviolet light assemblies vertically immersed, the catalyst feeding device is matched with an ultrasonic transducer to perform ultrasonic dispersion on the catalyst, the oxidant feeding device and the pH agent feeding device are respectively used for feeding the oxidant and the pH agent into the reaction tank, and the flow impeller is used for pushing sewage and the agent to be fully mixed and a water body to circularly flow in the reaction tank, so that the reaction mass transfer effect of the system is promoted, and the oxidation efficiency is improved.
In the above technical solution, preferably, the circulating heterogeneous photocatalytic oxidation assembly further includes an online pH monitoring device and an ORP (oxidation-reduction potential) monitoring device, the online pH monitoring device is configured to monitor a pH value of a water body in the reaction tank, and the system pH is kept stable by linking the acid adding device according to the pH value, the ORP monitoring device is configured to monitor an ORP potential of the water body in the reaction tank, and the adding of the oxidant is adjusted by a height of the ORP value, so that the system is automatically operated.
In the above technical solution, preferably, an inclined plate and a catalyst circulating pump are arranged in the inclined plate precipitation assembly, the inclined plate is used for intercepting the catalyst, one end of the catalyst circulating pump is communicated with the circulating heterogeneous photocatalytic oxidation assembly, and the other end of the catalyst circulating pump is communicated with a sludge discharge pipeline, and is used for refluxing a part of the catalyst to the circulating heterogeneous photocatalytic oxidation assembly.
In the above technical scheme, preferably, the degassing reaction assembly includes an aerator pipe, an air blower, an alkali liquor feeding device and an online pH monitoring control system, an air outlet of the air blower is communicated with the aerator pipe, the aerator pipe is used for carrying out aeration treatment on a water body, the alkali liquor feeding device is used for feeding alkali liquor to the water body to be neutral, the online pH monitoring control system is connected with the alkali liquor feeding device, and the feeding dosage of the alkali liquor feeding device is controlled according to a monitored pH value. Preferably, the blower of the system can be provided with an air source by a rotary fan, a Roots fan, an air suspension fan and the like.
In the technical scheme, preferably, high efficiency catalyst separation subassembly includes coagulant aid charge device, flocculating agent charge device, mixer and middle pond, coagulant aid charge device and flocculating agent charge device are used for throwing coagulant aid and flocculating agent respectively, the mixer is used for with the coagulant aid the flocculating agent is stirred with the water, middle pond independently set up in the high efficiency catalyst separation subassembly, water passes through after carrying out the floc separation in the high efficiency catalyst separation subassembly middle water pond pump send extremely aeration biological filter.
In the above technical scheme, preferably, the biological aerated filter further includes a water inlet pump, a roots blower and a backwash water pump, the water inlet pump is used for pumping the water in the intermediate water tank to the biological aerated filter, the roots blower is used for conveying gas to the biological aerated filter for the growth and utilization of microorganisms, the biological aerated filter is filled with a filter material, the backwash water pump is used for pumping the temporary water in the clean water tank to the biological aerated filter for backwashing the filter material, and the backwash water in the biological aerated filter returns to the front-end secondary sedimentation tank through a drain pipe for secondary treatment.
The invention also provides a combined process for advanced wastewater treatment, which is applied to the combined device for advanced wastewater treatment in the technical scheme and comprises the following steps: inputting sewage into a circulating heterogeneous photocatalytic oxidation assembly, wherein the circulating heterogeneous photocatalytic oxidation reaction assembly performs photocatalytic oxidation reaction on the sewage in a micro-acid environment; the water body after the reaction of the circulating heterogeneous photocatalytic oxidation reaction component is finished automatically flows into the inclined plate precipitation component to intercept the catalyst; the supernatant treated by the inclined plate precipitation component automatically flows into a degassing reaction component for degassing, and the pH value is adjusted to be neutral; effluent treated by the degassing reaction component automatically flows into the high-efficiency catalyst separation component, and flocculation separation is realized by adding a coagulant aid and a flocculating agent; and the separated supernatant of the high-efficiency catalyst separation component is pumped to the biological aerated filter through an intermediate water tank, biologically oxidizes, degrades and filters the water body, and conveys the filtered effluent to a clean water tank.
In the above technical solution, preferably, the circulating heterogeneous photocatalytic oxidation reaction assembly adds acid solution to the sewage to control the pH value to 4-6.5, adds an iron-based catalyst and an oxidant, and irradiates ultraviolet light; the aperture of an inclined plate in the inclined plate precipitation component is 60-100mm, L is 1000mm, the included angle with the vertical direction is 60 degrees, the material of the inclined plate is UPVC (ultra vinyl Chloride) or reinforced polyurethane or stainless steel, and the intercepted catalyst flows back to the circulating heterogeneous photocatalytic oxidation reaction component; adding an alkaline solution into the degassing reaction component until the pH value of a water body is 6.5-7.0, and maintaining the pH value of effluent at neutral; coagulant aid and flocculating agent are added into the front end area of the high-efficiency catalyst separation assembly, the catalyst and suspended matters are flocculated under the stirring and mixing action, and the suspended matters and water are subjected to mud-water separation at the rear end of the catalyst separation assembly to obtain supernatant; the filter material in the aeration biological filter tank adopts a ceramsite filter material or a high-molecular light filter material, and the water body is treated by the oxidation and degradation of microorganisms and the adsorption and filtration effects of the filter material.
In the technical scheme, preferably, polyaluminium chloride is added into the high-efficiency catalyst separation component as the coagulant aid, the adding concentration is 0-100ppm, polyacrylamide is added as the flocculant, and the adding concentration is 1-5 ppm; adding an alkaline solution into the degassing reaction component, wherein the alkaline solution is a sodium hydroxide solution or a calcium hydroxide solution; and the backwashing wastewater after backwashing the filter materials in the biological aerated filter returns to the front-end secondary sedimentation tank through a drain pipe for secondary treatment.
Compared with the prior art, the invention has the beneficial effects that: through the combination of circulating heterogeneous photocatalytic oxidation process and the biological aerated filter, part of COD is removed through photocatalytic oxidation reaction, meanwhile, the biologically-nondegradable macromolecular pollutants in the system can be gradually decomposed into small molecules, the biodegradability of sewage is improved, and then through the combination with the biological aerated filter, ammonia nitrogen, total phosphorus and ss in a water body are further removed through the high-efficiency biological oxidation effect and the biological adsorption and filtration effect of the biological aerated filter, so that the comprehensive improvement of the sewage quality is realized, and the requirement of a new discharge standard is met.
Drawings
FIG. 1 is a schematic flow chart of a combined device for advanced wastewater treatment according to an embodiment of the present invention.
In the drawings, the correspondence between each component and the reference numeral is:
1. a circulating heterogeneous photocatalytic oxidation assembly; 11. a catalyst feeding device; 12. adding an oxidant into the packaging paper; 13. a pH medicament adding device; 2. an inclined plate sedimentation tank component; 21. a sloping plate; 3. a degassing reaction component; 4. a high efficiency catalyst separation assembly; 41. a coagulant aid adding device; 42. a flocculating agent adding device; 43. a blender; 44. a middle water tank; 5. an aeration biological filter; 6. a clean water tank.
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 obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The invention is described in further detail below with reference to the attached drawing figures:
as shown in figure 1, the combined device for advanced wastewater treatment provided by the invention comprises a circulating heterogeneous photocatalytic oxidation assembly 1, an inclined plate sedimentation tank assembly 2, a degassing reaction assembly 3, a high-efficiency catalyst separation assembly 4, a biological aerated filter 5 and a clean water tank 6 which are sequentially connected through pipelines; the circulating heterogeneous photocatalytic oxidation component 1 performs photocatalytic oxidation reaction on input sewage; the inclined plate sedimentation tank component 2 intercepts part of the catalyst flowing into the water body; the degassing reaction component 3 aerates the supernatant fluid flowing in from the inclined plate sedimentation component and adjusts the pH value to be neutral; the high-efficiency catalyst separation component 4 separates flocs of water flowing into the degassing reaction component 3 through a coagulant aid and a flocculating agent; the biological aerated filter 5 performs biological oxidation degradation and filtration on the supernatant fluid flowing in from the high-efficiency catalyst separation component 4, and outputs the effluent water to a clean water tank 6.
In the embodiment, the biochemical municipal or industrial sewage is lifted from the secondary sedimentation tank to the circulating heterogeneous photocatalytic oxidation reaction device, acid, catalyst, oxidant and the like are added into the reaction tank to perform photocatalytic reaction in a micro-acid environment, so that the oxidative degradation of organic matters difficult to degrade in water is realized, most COD is removed, and the B/C ratio of the wastewater is improved. The inclined plate sedimentation component intercepts most of catalyst carried in inflow sewage, the intercepted catalyst is pumped to the front end of a circulating heterogeneous photocatalytic oxidation reaction device through a catalyst reflux pump and is recycled, supernatant of the inclined plate sedimentation component automatically flows into a degassing reaction component 3, the pH value of a water body is adjusted to be neutral by adding alkaline solution into the degassing reaction component 3, a coagulant aid and a flocculating agent are added into the front end of a catalyst separation tank in a high-efficiency catalyst separation component 4, floc separation is realized through a catalyst separation system to obtain supernatant, the supernatant is pumped to a biological aerated filter 5 at the rear end through an intermediate water tank 44, COD, ammonia nitrogen, total phosphorus and ss in water are further removed through biological oxidation degradation and filtration in the biological aerated filter, and various pollution indexes of the sewage are removed.
In the above embodiment, preferably, the circulating heterogeneous photocatalytic oxidation assembly 1 includes an ultraviolet light source system, a catalyst adding device 11, an oxidant adding device, a pH agent adding device 13, and a flow impeller, the ultraviolet light source system is a plurality of ultraviolet light assemblies placed in a vertical immersion manner, the catalyst adding device 11 is matched with an ultrasonic transducer to perform ultrasonic dispersion on the catalyst, the oxidant adding device and the pH agent adding device 13 are respectively used for adding an oxidant and a pH agent into the reaction tank, and the flow impeller is used for pushing sewage and the agent to be fully mixed and a water body to flow in the reaction tank in a circulating manner.
In the circulating heterogeneous photocatalytic oxidation assembly 1, the added acidic reagent enables a water body to be in a slightly acidic environment, the ultraviolet light of the ultraviolet light source system and the iron-based catalyst interact with each other, the cyclic conversion of the catalyst and the generation of hydroxyl radicals are realized, meanwhile, the ultraviolet light also synergistically generates the hydroxyl radicals to the photolysis of hydrogen peroxide, the multiplication of the hydroxyl radicals is further realized, and the deep oxidation removal of pollutants in water is further improved. Acid liquor is added into the circulating heterogeneous photocatalytic oxidation assembly 1, the pH value is controlled to be 4-6.5, and the pH value is higher than that of 2-4 of the traditional Fenton advanced oxidation reaction.
In the above embodiment, preferably, the circulating heterogeneous photocatalytic oxidation assembly 1 further comprises an online pH monitoring device and an ORP monitoring device, wherein the online pH monitoring device is used for monitoring the pH value of the water body in the reaction tank, and controlling the dosing of the reagent, i.e. the sulfuric acid, according to the pH value; the ORP monitoring device is used for monitoring the oxidation-reduction potential of a water body in the reaction tank, monitoring the oxidation-reduction potential change of a reaction process system, and linking the addition of an oxidant according to the ORP value, thereby being beneficial to the control of the system.
In the above embodiment, preferably, the inclined plate precipitation assembly is provided with an inclined plate 21 and a catalyst circulation pump, the inclined plate 21 is used for trapping the catalyst, the aperture diameter of the inclined plate 21 is 60-100, L is 1000mm, the installation angle is 60 °, and the material is UPVC or reinforced polyurethane or stainless steel. One end of the catalyst circulating pump is communicated with the circulating heterogeneous photocatalytic oxidation assembly 1, and the other end of the catalyst circulating pump is communicated with the sludge discharge pipeline and used for returning part of the catalyst to the circulating heterogeneous photocatalytic oxidation assembly 1, recycling the catalyst and reducing the addition of the catalyst.
In the above embodiment, preferably, the degassing reaction assembly 3 includes an aeration pipe, an air blower, an alkali liquor feeding device and an online pH monitoring and controlling system, an air outlet of the air blower is communicated with the aeration pipe, the aeration pipe is used for carrying out aeration treatment on the water body, the alkali liquor feeding device is used for feeding alkali liquor to the water body to be neutral, the online pH monitoring and controlling system is connected with the alkali liquor feeding device, and the feeding dosage of the alkali liquor feeding device is controlled according to the monitored pH value.
In the above embodiment, preferably, the high-efficiency catalyst separation assembly 4 includes a coagulant aid dosing device, a flocculant dosing device, a stirrer 43 and an intermediate water tank 44, the coagulant aid dosing device and the flocculant dosing device are disposed at the front end of the high-efficiency catalyst separation assembly 4 and are respectively used for dosing a coagulant aid and a flocculant, the stirrer 43 is used for stirring the coagulant aid, the flocculant and the water body, and the catalyst and the ss flocculate are separated under the action of the coagulant aid and the flocculant to separate mud and water, so as to obtain a clear water body. The middle water tank 44 is independently arranged in the high-efficiency catalyst separation component 4, and water in the high-efficiency catalyst separation component 4 is pumped to the biological aerated filter 5 through the middle water tank 44 after being subjected to floc separation.
In the above embodiment, preferably, the biological aerated filter 5 further includes a water inlet pump, a roots blower and a backwash water pump, the water inlet pump is used for pumping the water in the intermediate water tank 44 to the biological aerated filter 5, the roots blower is used for delivering gas to the biological aerated filter 5, the biological aerated filter 5 is filled with a ceramic filter material or a light filter material as a biological carrier, the biological filter material has a large specific surface area and a large porosity and is easy to adhere to a biological membrane, microorganisms in the biological aerated filter use nutrients in water for metabolism, and COD, ammonia nitrogen, total phosphorus, ss and the like are reduced through the oxidative degradation of the microorganisms and the adsorption and filtration of the filter material, so that the effluent of the sewage reaches the standard; the aeration biological filter 5 has the advantages of fast film formation, difficult loss, larger biomass in unit volume, good treatment effect, greatly reduced floor area and ensured effluent quality reaching the standard. The aeration biological filter 5 is matched with air washing and water washing back washing equipment, ss and the like intercepted by a fallen biological membrane and a filter material are continuously increased along with the metabolism of the biological membrane in the operation process, the water level in the filter is increased, namely, the filter material needs to be back washed, back washing water adopts clean water temporarily stored in a clean water tank 6, and back washing wastewater flows back to a water inlet secondary sedimentation tank through a back washing water pump through a drainage pipeline for secondary treatment.
The invention also provides a combined process for advanced wastewater treatment, which is applied to the combined device for advanced wastewater treatment provided in the embodiment and comprises the following steps: inputting the sewage into a circulating heterogeneous photocatalytic oxidation assembly 1, and carrying out photocatalytic oxidation reaction on the sewage by the circulating heterogeneous photocatalytic oxidation reaction assembly in a micro-acid environment; the water body after the reaction of the circulating heterogeneous photocatalytic oxidation reaction component is finished automatically flows into the inclined plate precipitation component to intercept the catalyst; the supernatant treated by the inclined plate precipitation component automatically flows into a degassing reaction component 3 for degassing, and the pH value is adjusted to be neutral; effluent treated by the degassing reaction component 3 automatically flows into the high-efficiency catalyst separation component 4, and flocculation separation is realized by adding coagulant aids and flocculants; the separated supernatant of the high-efficiency catalyst separation component 4 is pumped to the biological aerated filter 5 through the intermediate water tank 44, the water body is subjected to biological oxidation degradation and filtration, and the filtered effluent is conveyed to the clean water tank 6.
In the above embodiment, preferably, the circulating heterogeneous photocatalytic oxidation reaction assembly adds acid solution to the sewage to control the pH value to 4-6.5, adds iron-based catalyst and oxidant, and irradiates ultraviolet light. Wherein, the oxidant is hydrogen peroxide, the pH value in the reaction tank is controlled to be between 4 and 6.5 by adding acid liquor, the adding amount of the hydrogen peroxide is 30 to 100mg/L, and the adding amount of the catalyst is within the range of 50 to 200 mg/L. The waste water stays in the circulating heterogeneous photocatalytic oxidation reaction device for about 1h, wherein the illumination time is between 5 and 30min, and under the action of ultraviolet light and a catalyst, a large amount of hydroxyl radicals are generated to remove pollutants.
The water sample treated by the circulating heterogeneous photocatalytic oxidation reaction component automatically flows into the inclined plate sedimentation tank component 2 through an overflow port, the aperture of an inclined plate 21 in the inclined plate sedimentation component is 60-100mm, the included angle between the inclined plate 21 and the vertical direction is 60 degrees, the inclined plate 21 is made of UPVC (unplasticized polyvinyl chloride) or reinforced polyurethane or stainless steel, the intercepted catalyst returns to the circulating heterogeneous photocatalytic oxidation reaction component through a periodic catalyst circulating pump, the cyclic utilization of the catalyst is realized, and the adding amount of the catalyst is greatly reduced.
Supernatant containing a small amount of ss in the inclined plate sedimentation tank component 2 overflows into a degassing reaction component 3, and an alkaline solution is added into the degassing reaction component 3 until the pH value of a water body is 6.5-7.0, so that the effluent returns to a neutral condition; coagulant aid and flocculating agent are added into the front end area of the high-efficiency catalyst separation component 4, the adding concentration of the coagulant aid is 30ppm, the adding concentration of the flocculating agent is 1ppm, after flocculation reaction, the ss and the catalyst in the water separate the catalyst and the ss through a catalyst separation device, COD (chemical oxygen demand) of the separated water of the catalyst can be reduced to about 70mg/L, and the ss can be reduced to 15 mg/L. The filter material in the biological aerated filter 5 is a ceramsite filter material or a high-molecular light filter material, and COD, ammonia nitrogen, total phosphorus, ss and other pollutants in water are further removed through the microbial oxidation degradation effect and the adsorption filtration effect of the filter material, so that the indexes of COD, ammonia nitrogen, ss and the like meet the requirement of external drainage. During operation, along with the metabolism of the biological membrane, the dropped biological membrane and the ss intercepted by the filter material are continuously increased, the water level in the filter tank is increased, namely the filter material needs to be backwashed, the backwashing water adopts the clean water temporarily stored in the clean water tank 6, and the backwashing wastewater flows back to the secondary sedimentation tank at the front end through the drainage pipeline for secondary treatment.
In the above embodiment, preferably, polyaluminium chloride is added into the high-efficiency catalyst separation component 4 as a coagulant aid at a concentration of 0-100ppm, and polyacrylamide is added as a flocculant at a concentration of 1-5 ppm; adding an alkaline solution into the degassing reaction component 3, wherein the alkaline solution is a sodium hydroxide solution or a calcium hydroxide solution; and the backwashing wastewater after backwashing the filter materials in the biological aerated filter 5 returns to the front-end secondary sedimentation tank through a drainage pipeline for secondary treatment.
According to the sewage advanced treatment combined device and the process provided by the embodiment, the advanced treatment of the effluent after the biochemical treatment of the printing and dyeing wastewater is taken as an example, the device and the process provided by the invention are used for treatment, and the indexes of the inlet water and the outlet water of the sewage to be treated are shown in the following table and meet the requirements of new discharge standards.
| Parameter(s) | CODcr | Ammonia nitrogen | Total phosphorus | ss |
| Inflow (mg/L) | ≤100 | ＜1 | <0.5 | ≤30 |
| Water outlet (mg/L) | ≤50 | ＜0.5 | <0.5 | ≤10 |
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A sewage advanced treatment combination device is characterized by comprising a circulating heterogeneous photocatalytic oxidation component, an inclined plate sedimentation tank component, a degassing reaction component, a high-efficiency catalyst separation component, an aeration biological filter and a clean water tank which are sequentially connected through pipelines;
the circulating heterogeneous photocatalytic oxidation component performs photocatalytic oxidation reaction on input sewage;
the inclined plate sedimentation tank component intercepts part of the catalyst flowing into the water body;
the degassing reaction component aerates the supernatant flowing in from the inclined plate sedimentation component and adjusts the pH value to be neutral;
the high-efficiency catalyst separation component is used for carrying out floc separation on the water flowing into the degassing reaction component through a coagulant aid and a flocculating agent;
the biological aerated filter carries out biological oxidation degradation and filtration on the supernatant fluid flowing in from the high-efficiency catalyst separation component, and outputs the effluent water to the clean water tank.
2. The sewage advanced treatment combination device according to claim 1, wherein the circulating heterogeneous photocatalytic oxidation assembly comprises an ultraviolet light source system, a catalyst adding device, an oxidant adding device, a pH agent adding device and a flow impeller, the ultraviolet light source system is a plurality of ultraviolet light assemblies which are vertically immersed, the catalyst adding device is matched with an ultrasonic transducer to carry out ultrasonic dispersion on the catalyst, the oxidant adding device and the pH agent adding device are respectively used for adding an oxidant and a pH adjusting agent into the reaction tank, and the flow impeller is used for pushing sewage and the agent to be fully mixed and a water body to circularly flow in the reaction tank.
3. The combined advanced wastewater treatment plant according to claim 2, wherein the circulating heterogeneous photocatalytic oxidation assembly further comprises an online pH monitoring device for monitoring the pH value of the water body in the reaction tank and an ORP monitoring device for monitoring the oxidation-reduction potential of the water body in the reaction tank.
4. The sewage deep treatment combination device of claim 1, wherein the inclined plate precipitation assembly is provided therein with an inclined plate and a catalyst circulating pump, the inclined plate is used for intercepting catalyst, one end of the catalyst circulating pump is communicated with the circulating heterogeneous photocatalytic oxidation assembly, and the other end is communicated with a sludge discharge pipeline, and is used for returning part of the catalyst to the circulating heterogeneous photocatalytic oxidation assembly.
5. The sewage advanced treatment combination device according to claim 1, wherein the degassing reaction component comprises an aeration pipe, an air blower, an alkali liquor feeding device and an online pH monitoring control system, an air outlet of the air blower is communicated with the aeration pipe, the aeration pipe is used for carrying out aeration treatment on a water body, the alkali liquor feeding device is used for feeding alkali liquor to the water body to be neutral, the online pH monitoring control system is connected with the alkali liquor feeding device, and the feeding dosage of the alkali liquor feeding device is controlled according to the monitored pH value.
6. The sewage deep treatment combination device according to claim 1, wherein the high-efficiency catalyst separation assembly comprises a coagulant aid dosing device, a flocculant dosing device, a stirrer and an intermediate water tank, the coagulant aid dosing device and the flocculant dosing device are respectively used for dosing a coagulant aid and a flocculant, the stirrer is used for stirring the coagulant aid, the flocculant and a water body, the intermediate water tank is independently arranged in the high-efficiency catalyst separation assembly, and the water body in the high-efficiency catalyst separation assembly is pumped to the biological aerated filter tank through the intermediate water tank after floc separation.
7. The combined device for advanced wastewater treatment according to claim 6, wherein the biological aerated filter further comprises a water inlet pump, a Roots blower and a backwash water pump, the water inlet pump is used for pumping the water in the intermediate water tank to the biological aerated filter, the Roots blower is used for conveying gas to the biological aerated filter for microbial growth, the biological aerated filter is filled with filter materials, the backwash water pump is used for pumping clean water into the biological aerated filter for backwashing the filler, and backwash water of the biological aerated filter returns to the front end secondary sedimentation tank through a drain pipe for secondary treatment.
8. The combined process for advanced wastewater treatment is applied to the combined device for advanced wastewater treatment as claimed in any one of claims 1 to 7, and is characterized by comprising the following steps:
inputting sewage into a circulating heterogeneous photocatalytic oxidation assembly, wherein the circulating heterogeneous photocatalytic oxidation reaction assembly performs photocatalytic oxidation reaction on the sewage in a micro-acid environment;
the water body after the reaction of the circulating heterogeneous photocatalytic oxidation reaction component is finished automatically flows into the inclined plate precipitation component to intercept the catalyst;
the supernatant treated by the inclined plate precipitation component automatically flows into a degassing reaction component for degassing, and the pH value is adjusted to be neutral;
the effluent treated by the degassing reaction component automatically flows into a high-efficiency catalyst separation component, and the separation of the catalyst and ss from water is realized by adding a coagulant aid and a flocculating agent;
and the separated supernatant of the high-efficiency catalyst separation component is pumped to the biological aerated filter through an intermediate water tank, biologically oxidizes, degrades and filters the water body, and conveys the filtered effluent to a clean water tank.
9. The combined advanced wastewater treatment process according to claim 8, wherein:
the circulating heterogeneous photocatalytic oxidation reaction assembly adds acid liquor to the sewage to control the pH value to be 4-6.5, adds an iron-based catalyst and an oxidant, and irradiates ultraviolet light;
the aperture of an inclined plate in the inclined plate precipitation component is 60-100mm, the included angle with the vertical direction is 60 degrees, the inclined plate is made of UPVC (unplasticized polyvinyl chloride) or reinforced polyurethane or stainless steel, and the intercepted catalyst flows back to the circulating heterogeneous photocatalytic oxidation reaction component;
adding an alkaline solution into the degassing reaction component until the pH value of a water body is 6.5-7.0, and keeping the effluent water neutral;
a coagulant aid and a flocculating agent are added into the front end area of the high-efficiency catalyst separation component, and catalyst mud and suspended matters are flocculated and separated under the stirring and mixing action;
the filter material in the aeration biological filter tank adopts a ceramsite filter material or a high-molecular light filter material, and the water body is treated by the oxidation and degradation of microorganisms and the adsorption and filtration effects of the filter material.
10. The combined process for advanced wastewater treatment according to claim 8, wherein polyaluminium chloride is added into the high-efficiency catalyst separation assembly as the coagulant aid at a concentration of 0-100ppm, polyacrylamide is added as the flocculant at a concentration of 1-5 ppm;
adding an alkaline solution into the degassing reaction component, wherein the alkaline solution is a sodium hydroxide solution or a calcium hydroxide solution;
and the backwashing wastewater after backwashing the filter materials in the biological aerated filter returns to the front-end secondary sedimentation tank through a drain pipe for secondary treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011539882.0A CN112624510A (en) | 2020-12-23 | 2020-12-23 | Sewage advanced treatment combined device and process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011539882.0A CN112624510A (en) | 2020-12-23 | 2020-12-23 | Sewage advanced treatment combined device and process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112624510A true CN112624510A (en) | 2021-04-09 |
Family
ID=75321692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011539882.0A Pending CN112624510A (en) | 2020-12-23 | 2020-12-23 | Sewage advanced treatment combined device and process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112624510A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115028302A (en) * | 2022-06-17 | 2022-09-09 | 苏州市创联净化设备有限公司 | Production device and filtering method of injection water for medical instruments |
| CN116253468A (en) * | 2023-03-01 | 2023-06-13 | 中建三局绿色产业投资有限公司 | Photocatalytic oxidation film system applied to sewage treatment and sewage treatment method |
| CN117383684A (en) * | 2023-10-20 | 2024-01-12 | 天津高能时代水处理科技有限公司 | High-efficient intelligent circulation type heterogeneous photocatalytic oxidation reaction device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100697880B1 (en) * | 2006-02-28 | 2007-03-23 | 순천대학교 산학협력단 | Effective Regeneration Technology of Photocatalyst Used in Photooxidation Water Treatment Process |
| CN101830600A (en) * | 2010-03-23 | 2010-09-15 | 天津大学 | Method for treating comprehensive electroplating wastewater |
| CN203212428U (en) * | 2013-02-06 | 2013-09-25 | 北京国环清华环境工程设计研究院有限公司 | Integrated device for advanced treatment of refractory industrial wastewater |
| CN105152433A (en) * | 2015-10-22 | 2015-12-16 | 北京赛科康仑环保科技有限公司 | Method for removing COD (chemical oxygen demand) from copper/molybdenum extraction raffinate mixed wastewater |
| CN207330646U (en) * | 2017-09-06 | 2018-05-08 | 肇庆领誉环保实业有限公司 | A kind of organic complex waste water photocatalysis treatment system |
| CN110902907A (en) * | 2019-12-02 | 2020-03-24 | 北京尚水清源水处理技术有限公司 | Method for removing refractory organic matters in landfill leachate super-filtered water |
| CN211847553U (en) * | 2020-04-01 | 2020-11-03 | 中铁环境科技工程有限公司 | Organic wastewater treatment device |
| CN111875121A (en) * | 2020-08-19 | 2020-11-03 | 天津高能嘉源环保科技有限公司 | A light-Fenton catalytic oxidation process and system for upgrading municipal wastewater |
| CN215102667U (en) * | 2020-12-23 | 2021-12-10 | 天津高能时代水处理科技有限公司 | Sewage advanced treatment composite set |
-
2020
- 2020-12-23 CN CN202011539882.0A patent/CN112624510A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100697880B1 (en) * | 2006-02-28 | 2007-03-23 | 순천대학교 산학협력단 | Effective Regeneration Technology of Photocatalyst Used in Photooxidation Water Treatment Process |
| CN101830600A (en) * | 2010-03-23 | 2010-09-15 | 天津大学 | Method for treating comprehensive electroplating wastewater |
| CN203212428U (en) * | 2013-02-06 | 2013-09-25 | 北京国环清华环境工程设计研究院有限公司 | Integrated device for advanced treatment of refractory industrial wastewater |
| CN105152433A (en) * | 2015-10-22 | 2015-12-16 | 北京赛科康仑环保科技有限公司 | Method for removing COD (chemical oxygen demand) from copper/molybdenum extraction raffinate mixed wastewater |
| CN207330646U (en) * | 2017-09-06 | 2018-05-08 | 肇庆领誉环保实业有限公司 | A kind of organic complex waste water photocatalysis treatment system |
| CN110902907A (en) * | 2019-12-02 | 2020-03-24 | 北京尚水清源水处理技术有限公司 | Method for removing refractory organic matters in landfill leachate super-filtered water |
| CN211847553U (en) * | 2020-04-01 | 2020-11-03 | 中铁环境科技工程有限公司 | Organic wastewater treatment device |
| CN111875121A (en) * | 2020-08-19 | 2020-11-03 | 天津高能嘉源环保科技有限公司 | A light-Fenton catalytic oxidation process and system for upgrading municipal wastewater |
| CN215102667U (en) * | 2020-12-23 | 2021-12-10 | 天津高能时代水处理科技有限公司 | Sewage advanced treatment composite set |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115028302A (en) * | 2022-06-17 | 2022-09-09 | 苏州市创联净化设备有限公司 | Production device and filtering method of injection water for medical instruments |
| CN115028302B (en) * | 2022-06-17 | 2023-10-17 | 苏州市创联净化设备有限公司 | Device for producing injection water for medical instrument and filtering method thereof |
| CN116253468A (en) * | 2023-03-01 | 2023-06-13 | 中建三局绿色产业投资有限公司 | Photocatalytic oxidation film system applied to sewage treatment and sewage treatment method |
| CN117383684A (en) * | 2023-10-20 | 2024-01-12 | 天津高能时代水处理科技有限公司 | High-efficient intelligent circulation type heterogeneous photocatalytic oxidation reaction device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102897974A (en) | Process for treating medical wastewater | |
| CN106477829B (en) | Animal carcass harmless wastewater treatment system and wastewater treatment method | |
| CN112624510A (en) | Sewage advanced treatment combined device and process | |
| CN109734248B (en) | Advanced treatment method and equipment for reverse osmosis concentrated water | |
| CN104370418A (en) | Treatment method of chemical sewage | |
| CN109534601A (en) | A kind of biochemical method for combining electrocatalytic oxidation processing landfill leachate | |
| CN105731724A (en) | Treating and recycling method for offshore-platform high-salt domestic wastewater | |
| CN205676312U (en) | A kind of offshore platform high salt life sewage treatment and reuse equipment | |
| CN106587531A (en) | Treatment system and method for synthesizing type industrial park sewage | |
| CN218454092U (en) | Treatment system for degradation-resistant oily wastewater of engine plant | |
| CN109279740A (en) | One kind being suitable for swag high concentrated organic wastewater advanced treatment system and method | |
| CN104710077A (en) | Treatment system and treatment method of synthetic rubber wastewater | |
| CN106277553A (en) | The processing method of the dense water of reverse osmosis (RO) and equipment | |
| CN202156978U (en) | High salinity effluent treatment plant | |
| CN215102667U (en) | Sewage advanced treatment composite set | |
| CN206927755U (en) | Integrated sewage treating apparatus | |
| CN113955899A (en) | Efficient paint production wastewater treatment system and process | |
| CN102807299B (en) | Special apparatus for treatment and reuse of dimethyl ether production waste water | |
| CN201785287U (en) | Treatment system for leachate in sanitary landfill | |
| CN205420094U (en) | Effluent disposal system in synthetic rubber production | |
| CN106430846A (en) | Efficient treatment integrated process for recalcitrant wastewater with low organic matter content | |
| CN111302559A (en) | Kitchen waste fermentation liquor treatment method and system | |
| CN104909517A (en) | Industrial production wastewater advanced treatment device | |
| CN213623758U (en) | Industrial wastewater treatment device | |
| CN206298494U (en) | The innoxious Waste Water Treatment of spoil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |