CN107892434B - Equipment and process for treating municipal sewage by ACT aerobic method - Google Patents
Equipment and process for treating municipal sewage by ACT aerobic method Download PDFInfo
- Publication number
- CN107892434B CN107892434B CN201711174619.4A CN201711174619A CN107892434B CN 107892434 B CN107892434 B CN 107892434B CN 201711174619 A CN201711174619 A CN 201711174619A CN 107892434 B CN107892434 B CN 107892434B
- Authority
- CN
- China
- Prior art keywords
- tank
- reaction tank
- water
- act
- detection device
- 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.)
- Active
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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
- C02F2209/005—Processes using a programmable logic controller [PLC]
-
- 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
- C02F3/1205—Particular type of activated sludge processes
- C02F3/121—Multistep treatment
-
- 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
-
- 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]
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)
- Activated Sludge Processes (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses equipment and a process for treating municipal sewage by an ACT aerobic method, wherein the equipment mainly comprises a pretreatment system, a biochemical treatment system, an advanced treatment system, a sludge treatment system, a detection system, a computer and a PLC control system; the pretreatment system is connected with the biochemical treatment system, the biochemical treatment system is connected with the advanced treatment system, the sludge treatment system is connected with the treatment system and the biochemical treatment system, the detection system is connected with the treatment system and the biochemical treatment system, the computer is connected with the detection system and the PLC control system, and the PLC control system is connected with the electric appliance device used by the equipment through a lead; the process comprises the following steps: a preparation stage; a starting stage; biochemical treatment; continuously running; deepening treatment; the invention adopts an ACT aerobic method to treat sewage, adopts young and active microorganisms, does not need to return sludge, and greatly reduces the process operation cost.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to equipment and a process for treating municipal sewage by an ACT aerobic method.
Background
At present, nearly 50 countries in the world have serious water shortage, and China is confirmed to be one of the serious water shortage countries by the united nations. But billions of tons of sewage which can be utilized by advanced treatment in China are not utilized and discharged every year, thereby causing waste of water resources.
The municipal sewage is relatively stable in water quality, but is turbid, deep, foul in smell, slightly alkaline, high in nitrogen and phosphorus content, generally free of toxic substances, and suitable for propagation of various microorganisms, so that the municipal sewage often contains a large amount of bacteria (including pathogenic bacteria) viruses and parasitic ova, is good in biodegradability and belongs to sewage which is relatively easy to treat.
Municipal wastewater treatment water is a source of water that varies greatly in quality and is difficult to treat, and the concentrations of total dissolved solids, COD, BOD, total silicon, ammonia and other contaminants vary very frequently, and in addition, the wastewater prior to treatment contains high concentrations of organic matter, microorganisms, etc., so any product designed to treat water must tolerate this variability and contain high concentrations of organic matter and active organisms.
In the discharge Standard of pollutants for municipal wastewater treatment plant issued in 2002 (GB18918-2002) of China, the effluent quality of all sewage disposal units is required to be that ammonia nitrogen is less than 5mg/L, total nitrogen is less than 15mg/L, total phosphorus is less than 0.5mg/L, and Chemical Oxygen Demand (COD) is less than 50mg/L (first-class A standard), and the removal of nitrogen and phosphorus pollutants in sewage is a main problem in current sewage treatment and regeneration.
In the sewage treatment process in the prior art, a continuous flow staged water inlet deep denitrification process is a biological denitrification process newly developed abroad in recent years, and is originally based on the traditional A/O process, and is generally formed by combining 2-5 sections of A/O in series, water is fed into each anoxic zone in a multipoint water inlet mode, sludge flows back to the first section of a reactor, and denitrifying bacteria in the anoxic zone at the first section utilize part of water inlet carbon sources to perform denitrification on nitrate nitrogen in the sludge flow back; nitrifying liquid and partial inlet water in each aerobic section flow into the anoxic section of the next section at the same time for denitrification. The reaction function of each subsequent section is the same as that of the first section. However, the research and application of the continuous flow staged water feeding process are only limited to denitrification, and chemical phosphorus removal is usually performed by adding medicaments, so that the actual operation cost of sewage treatment comprises a large amount of medicament adding cost, the sewage treatment cost is increased, and the environmental protection concept is lost.
ACT is based on the principle of chemical scaling, and does not require return sludge once the system is started after inoculation.
Disclosure of Invention
Aiming at the existing problems, the invention provides equipment for treating municipal sewage by an ACT aerobic method with high efficiency and unidirectional flow, and the invention solves another technical problem by providing a process for treating the municipal sewage by the ACT aerobic method.
In order to solve the first technical problem, the technical scheme of the invention is as follows: an ACT aerobic process municipal sewage treatment device mainly comprises a pretreatment system, a biochemical treatment system, an advanced treatment system, a sludge treatment system, a detection system, a computer and a PLC control system; the pretreatment system comprises a grid, a grit chamber, a primary sedimentation tank and an oil-water separation tank, the biochemical treatment system comprises an ACT reaction tank, an SBR reaction tank, a secondary sedimentation tank and a reflux device, the inner part of the ACT reaction tank is a suspended sludge area and a sewage area, the bottom of the ACT reaction tank is provided with a water inlet and a sludge discharge port, the upper part of the right side wall is provided with a water discharge port, the interior of the ACT reaction tank is provided with an aeration device, the top end of the interior of the ACT reaction tank is provided with a three-phase separation device, the exterior of the ACT reaction tank is provided with a constant temperature device, the exterior of the aeration device is connected; the advanced treatment system comprises a filter tank and a disinfection tank; the grid is connected with the grit chamber through a conduit; the grit chamber is connected with the primary sedimentation tank through a conduit; the primary sedimentation tank is connected with the oil-water separation tank through a conduit; the oil-water separation tank is connected with a water inlet of the ACT reaction tank through a conduit; the water outlet of the ACT reaction tank is connected with the SBR reaction tank through a guide pipe; the SBR reaction tank is connected with the secondary sedimentation tank through a conduit; the secondary sedimentation tank is connected with the filtering tank through a conduit, and is respectively connected with the ACT reaction tank and the SBR reaction tank through a reflux device; the filter tank is connected with the disinfection tank through a conduit; the joints of the grating and the grit chamber, the grit chamber and the primary settling tank, the primary settling tank and the oil-water separation tank, the oil-water separation tank and the ACT reaction tank, the ACT reaction tank and the SBR reaction tank, the SBR reaction tank and the secondary settling tank, the secondary settling tank and the filter tank, and the filter tank and the disinfection tank are all provided with one-way pumps; the sludge treatment system is connected with the grit chamber, the primary sedimentation tank, the oil-water separation tank, the ACT reaction tank, the SBR reaction tank and the secondary sedimentation tank, and an electronic valve is arranged at the joint; the detection system comprises a first detection device, a second detection device, a third detection device, a fourth detection device and a fifth detection device; the first detection device comprises an influent water quality online monitor for influent COD and nitrogen and phosphorus concentration, and is used for detecting the water quality condition of the primary sedimentation tank; the second detection device comprises an influent water quality on-line monitor with COD and nitrogen and phosphorus concentration and a pH tester, and is used for detecting the water quality condition after the oil-water separation tank finishes working; the third detection device comprises a water level monitor and an influent water quality on-line monitor for COD and nitrogen and phosphorus concentration, and is used for detecting the water quality condition in the ACT reaction tank; the detection device IV comprises a water level monitor and an influent water quality on-line monitor for COD and nitrogen and phosphorus concentration, and is used for detecting the water quality condition in the SBR reaction tank; the detection device five comprises an influent water quality online monitor with COD and nitrogen and phosphorus concentration and a pH tester, and is used for detecting the water quality condition in the secondary sedimentation tank; the computer is connected with the detection system through an interface and a lead; the PLC control system is in signal connection with a computer and is connected with the pretreatment system, the biochemical treatment system, the advanced treatment system, the sludge treatment system, the one-way pump and the electronic valve.
Furthermore, the water quality on-line monitor adopts an STIP-scan on-line detector; the parameters of the sewage quality which can be simultaneously monitored by the STIP-scan online detector comprise: the SSTIP-scan online detector is a very smooth and coherent analysis device for comprehensively and optically analyzing sewage and activated sludge by nitric nitrogen, SAC254, COD, TOC, total solids, sludge settlement ratio, sludge index and the like, and all measuring devices are concentrated in one probe.
Furthermore, the aeration device comprises a swing motor, a linkage rotating rod, a swing arm, a pressurizing device and an aeration head, wherein an air guide pipe is arranged inside the right half part of the linkage rotating rod, and an air inlet pipe is arranged inside the swing arm; the aeration head comprises a nozzle, a diffusion pipe and a mixing nozzle; the swing motor is connected with the swing arm through a linkage rotating rod, the inlet of the pressurizing device is connected with the air supply pump through an air duct, the outlet of the pressurizing device is connected with the nozzle and the diffusion pipe through an air inlet pipe, the mixing nozzle is arranged on the nozzle, and the outlet of the diffusion pipe is arranged right below the water inlet of the mixing nozzle; the water flow enters through the water inlet of the mixing nozzle by the air impact of the diffusion pipe, and then forms water-air mixed flow with the air flow of the nozzle to be sprayed at high speed, the water flow carrying a plurality of bubbles is stirred in a vortex manner in a water area with larger area and depth to complete aeration, the axial power of the water flow is not changed along with the change of the diving depth, and the air inflow can be adjusted; meanwhile, the aeration process is efficiently carried out in the reaction tank along with the swing of the swing arm.
Further, the filtering tank is an ultrafiltration membrane filtering tank; the equipment has the advantages of exquisite structure, small occupied area and easy operation; the ultrafiltration separation process is simple, and the automation degree of equipment is high; the applicability to water quality is strong, the application range is wide, no qualitative change occurs in the ultrafiltration process, and the ultrafiltration device can stably operate at normal temperature.
In order to solve the second technical problem, the technical solution of the present invention is:
a process for treating municipal sewage by an ACT aerobic method comprises the following steps:
(1) preparation phase
Taking activated sludge mixed liquor from a return sludge pipeline of a sewage treatment plant, injecting the activated sludge mixed liquor from an oil-water separation tank, pumping the activated sludge mixed liquor into an ACT reaction tank and an SBR reaction tank through a one-way pump, injecting municipal domestic sewage, and inoculating the mixed liquor with the sludge concentration of MLSS (MLSS) of 400 ppm;
(2) starting phase
Injecting municipal sewage, starting a device, and roughly filtering the municipal sewage through a grating; standing for 1h in a grit chamber; pumping supernatant fluid of the grit chamber to a primary settling tank to separate sludge with fine particles, detecting the water quality condition of the primary settling tank by a first detection device, and uploading the water quality condition to a computer for recording; then the oil-water separation tank is used for deslagging, removing floating oil, removing dispersed oil and filtering; pollutants such as suspended matters, floating-state and free-state grease, biological oxygen demand, chemical oxygen demand and the like in the municipal sewage are effectively removed;
(3) biochemical treatment
Pumping the municipal sewage treated by the oil-water separation tank to an ACT reaction tank, detecting the water quality condition of the oil-water separation tank after the oil-water separation tank finishes working through a second detection device, and uploading the water quality condition to a computer for recording; performing biochemical treatment on the ACT reaction tank for a plurality of hours, detecting the water quality condition in the ACT reaction tank by a third detection device, and uploading the water quality condition to a computer for recording; pumping the municipal sewage into the SBR reaction tank for biochemical treatment for a plurality of hours, detecting the water quality condition in the SBR reaction tank by a fourth detection device, and uploading the water quality condition to a computer for recording;
(4) continuous operation
After the biochemical treatment is finished, opening an electronic valve, allowing the treated water to enter a secondary sedimentation tank, and detecting the water quality condition in the secondary sedimentation tank by a fifth detection device; when the ammonia nitrogen of the mixed solution is more than 10mg/L, the water in the secondary sedimentation tank is reintroduced into the ACT reaction tank by the reflux device; when the ammonia nitrogen of the mixed solution is between 5 and 10mg/L, the water in the secondary sedimentation tank is reintroduced into the SBR reaction tank by the reflux device; when the ammonia nitrogen in the secondary sedimentation tank is less than 5mg/L, confirming that the secondary sedimentation tank is started to enter a stable operation stage, and recording and adjusting the processing time of the ACT reaction tank and the SBR reaction tank by the computer; the process adopts a closed-loop control system and has the following characteristics: because the feedback quantity of the output signal is compared with the input quantity to generate a deviation signal, and the deviation signal is utilized to realize the control or regulation of the output quantity, the output quantity of the system can automatically track the input quantity, reduce the tracking error, improve the control precision and inhibit the influence of a disturbance signal; the municipal sewage can be more efficiently treated;
(5) deepening treatment
And introducing the finally biochemically treated water into a filtering tank and a disinfecting tank for ultrafiltration membrane filtering and disinfection.
Further, the hydraulic retention time of the process is 30-60 h; the sludge age in the reaction tank is 30-60h, the biochemical reaction is carried out in the reaction tank through young and viable microorganisms to treat sewage, the bacterial age is equal to the water retention time, and the survival rate of the bacteria reaches 90%.
Further, when the sludge amount of the process exceeds 15%, carrying out sewage disposal through a sludge disposal system; the most beneficial strains are selected to operate under the condition of low-concentration MLSS, the required sludge amount is less, unidirectional flow suspension growth is realized, and the suspension growth of backflow activated sludge is not needed.
Compared with the prior art, the invention has the beneficial effects that: the invention adopts ACT aerobic method to treat sewage, a unique aeration device is adopted in the ACT reaction tank, effective oxygen supply can be carried out, proper stirring operation can be carried out in the reaction tank, the aeration process can be more fully completed, simultaneously, bacteria adopted in the reaction tank are suspended in a unidirectional flow manner in the form of independent individuals or small flocs to grow, the survival rate is up to 90 percent, sludge backflow is not needed, the sludge age in the reaction tank is 30-60 hours, the whole hydraulic retention time is shortened to 30-60 hours, and the process operation cost is greatly reduced by the technology; and moreover, each parameter is monitored in real time by adopting the automatic control system, so that the ACT system is in a standard and stable state, the problem of integral biochemical paralysis caused by unstable water inlet of a sewage plant can be solved, the stability of water outlet can be ensured, and the operating cost is greatly saved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the structure of an ACT reaction cell according to the present invention;
FIG. 3 is a schematic view of the structure of an aeration apparatus of the present invention;
wherein, 1-pretreatment system, 11-grid, 12-sand setting tank, 13-primary setting tank, 14-oil-water separation tank, 2-biochemical treatment system, 21-ACT reaction tank, 2110-water inlet, 2111-water outlet, 2112-sludge outlet, 212-suspended sludge area, 213-sewage area, 215-aeration device, 2150-air supply pump, 21501-air guide tube, 2151-swing motor, 2152-linkage rotating rod, 2153-swing arm, 21530-air inlet tube, 2154-pressurizing device, 2155-aeration head, 21550-nozzle, 21551-diffuser tube, 21552-mixing nozzle, 216-three-phase separation device, 2160-air outlet, 217-constant temperature device, 22-SBR reaction tank, 23-secondary setting tank, 24-reflux device, 3-an advanced treatment system, 31-a filter tank, 32-a disinfection tank, 4-a sludge treatment system, 5-a detection system, 6-a computer and 7-a PLC control system.
Detailed Description
Example 1: the device for treating municipal sewage by the ACT aerobic method as shown in the figures 1-3 mainly comprises a pretreatment system 1, a biochemical treatment system 2, a deep treatment system 3, a sludge treatment system 4, a detection system 5, a computer 6 and a PLC control system 7; the pretreatment system 1 comprises a grid 11, a grit chamber 12, a primary sedimentation tank 13 and an oil-water separation tank 14, the biochemical treatment system 2 comprises an ACT reaction tank 21, an SBR reaction tank 22, a secondary sedimentation tank 23 and a reflux device 24, the interior of the ACT reaction tank 21 is divided into a suspended sludge area 212 and a sewage area 213, the bottom of the ACT reaction tank 21 is provided with a water inlet 2110 and a sludge discharge 2112, the upper part of the right side wall is provided with a water outlet 2111, the interior is provided with an aeration device 215, the top end of the interior is provided with a three-phase separation device 216, the exterior is provided with a constant temperature device 217, the exterior of the aeration device 215 is connected with an air supply pump 2150, the upper end of the three-phase separation device 216 is provided with; the aeration device 215 comprises a swing motor 2151, a linkage rotating rod 2152, a swing arm 2153, a pressurizing device 2154 and an aeration head 2155, wherein an air guide tube 21501 is arranged inside the right half part of the linkage rotating rod 2152, and an air inlet tube 21530 is arranged inside the swing arm 2153; aeration head 2155 includes nozzle 21550, diffuser 21551, and mixing nozzle 21552; swing motor 2151 is arranged on the upper middle portion of the inner wall of ACT reaction tank 21, swing motor 2151 is connected with swing arm 2153 through linkage rotating rod 2152, inlet of pressurizing device 2154 is connected with air supply pump 2150 through air duct 21501, outlet of pressurizing device 2154 is connected with nozzle 21550 and diffuser 21551 through air inlet pipe 21530, mixing nozzle 21552 is arranged on nozzle 21550, and outlet of diffuser 21551 is arranged right under water inlet of mixing nozzle 21552; the water flow enters through the water inlet of the mixing nozzle 21552 by the air impact of the diffusion pipe 21551, and then forms a water-air mixed flow with the air flow of the nozzle 21550 to be ejected at a high speed, the water flow carrying a plurality of bubbles is stirred in a water area with a large area and depth in a vortex manner to complete aeration, the shaft power of the water flow is not changed along with the change of the diving depth, and the air inflow can be adjusted; meanwhile, an aeration process is efficiently carried out in the reaction tank along with the swinging of the swinging arm 2153; the advanced treatment system 3 comprises a filtering tank 31 and a disinfection tank 32; the grid 11 is connected with the grit chamber 12 through a conduit; the grit chamber 12 is connected with the primary sedimentation tank 13 through a conduit; the primary sedimentation tank 13 is connected with the oil-water separation tank 14 through a conduit; the oil-water separation tank 14 is connected with a water inlet 2110 of the ACT reaction tank 21 through a conduit; a water outlet 2111 of the ACT reaction tank 21 is connected with the SBR reaction tank 22 through a conduit; the SBR reaction tank 22 is connected with a secondary sedimentation tank 23 through a conduit; the secondary sedimentation tank 23 is connected with the filtering tank 31 through a conduit, and the secondary sedimentation tank 23 is respectively connected with the ACT reaction tank 21 and the SBR reaction tank 22 through a reflux device 24; the filtering tank 31 is connected with the sterilizing tank 32 through a conduit; the joints of the grid 11 and the grit chamber 12, the grit chamber 12 and the primary settling chamber 13, the primary settling chamber 13 and the oil-water separation chamber 14, the oil-water separation chamber 14 and the ACT reaction chamber 21, the ACT reaction chamber 21 and the SBR reaction chamber 22, the SBR reaction chamber 22 and the secondary settling chamber 23, the secondary settling chamber 23 and the filter chamber 31, and the filter chamber 31 and the disinfection chamber 32 are all provided with one-way pumps; the sludge treatment system 4 is connected with a grit chamber 12, a primary sedimentation tank 13, an oil-water separation tank 14, an ACT reaction tank 21, an SBR reaction tank 22 and a secondary sedimentation tank 23, and an electronic valve is arranged at the connection position; the detection system 5 comprises a first detection device 51, a second detection device 52, a third detection device 53, a fourth detection device 54 and a fifth detection device 55; the first detection device 51 comprises an influent water quality online monitor for influent COD and nitrogen and phosphorus concentration, and the first detection device 51 is used for detecting the water quality condition of the primary sedimentation tank 13; the second detection device 52 comprises an online monitor for the quality of the influent water with COD and nitrogen and phosphorus concentration and a pH tester, and the second detection device 52 is used for detecting the water quality condition of the oil-water separation tank 14 after the operation is finished; the third detection device 53 comprises a water level monitor and an influent water quality on-line monitor for COD and nitrogen and phosphorus concentration, and the third detection device 53 is used for detecting the water quality condition in the ACT reaction tank 21; the detection device IV 54 comprises a water level monitor and an influent water quality on-line monitor for COD and nitrogen and phosphorus concentration, and the detection device IV 54 is used for detecting the water quality condition in the SBR reaction tank 22; the fifth detection device 55 comprises an online monitor for the quality of the influent water with COD and nitrogen and phosphorus concentration and a pH tester, and the fifth detection device 55 is used for detecting the water quality condition in the secondary sedimentation tank 23; the computer 6 is connected with the detection system 5 through an interface and a lead; the PLC control system 7 is in signal connection with the computer 6, and the PLC control system 7 is connected with the pretreatment system 1, the biochemical treatment system 2, the advanced treatment system 3, the sludge treatment system 4, the one-way pump and the electronic valve.
Wherein, the water quality on-line monitor adopts an STIP-scan on-line detector; the parameters of the sewage quality which can be simultaneously monitored by the STIP-scan online detector comprise: the SSTIP-scan online detector is a very smooth and coherent analysis device for comprehensively and optically analyzing sewage and activated sludge, and all measuring devices are concentrated in one probe; the filtering tank 31 is an ultrafiltration membrane filtering tank; the equipment has the advantages of exquisite structure, small occupied area and easy operation; the ultrafiltration separation process is simple, and the automation degree of equipment is high; the applicability to water quality is strong, the application range is wide, no qualitative change occurs in the ultrafiltration process, and the ultrafiltration device can stably operate at normal temperature.
The device is used for treating the actual domestic sewage (COD is 180-265mg/L, TP is 4-8.4mg/L, SS is 19-34mg/L, NO) of a certain residential district3-N-16-20 mg/L) to process municipal sewage by ACT aerobic method, comprising the following steps:
(1) preparation phase
Taking activated sludge mixed liquor from a return sludge pipeline of a sewage treatment plant, injecting the activated sludge mixed liquor from the oil-water separation tank 14, pumping the activated sludge mixed liquor into an ACT reaction tank 21 and an SBR reaction tank 22 through a one-way pump, injecting municipal domestic sewage, and enabling the sludge concentration of the inoculated mixed liquor to be MLSS (maximum suspended solids) 400 ppm;
(2) starting phase
Injecting municipal sewage, starting the device, and roughly filtering the municipal sewage through a grating 11; standing for 1h in a grit chamber 12; pumping supernatant fluid of the grit chamber 12 to a primary sedimentation tank 13 to separate sludge with fine particles, detecting the water quality condition of the primary sedimentation tank 13 through a first detection device 51, and uploading the water quality condition to a computer 6 for recording; then the slag is removed, the floating oil is removed, the dispersed oil is removed and the filtration treatment is carried out in an oil-water separation tank 14;
(3) biochemical treatment
Pumping the municipal sewage treated by the oil-water separation tank 14 to an ACT reaction tank 21, detecting the water quality condition of the oil-water separation tank 14 after the work is finished through a second detection device 52, and uploading the water quality condition to the computer 6 for recording; performing biochemical treatment on the ACT reaction tank 21 for 10 hours, detecting the water quality condition inside the ACT reaction tank 21 through a third detection device 53, and uploading the water quality condition to a computer 6 for recording; pumping the municipal sewage into the SBR reaction tank 22 for biochemical treatment for 5 hours, detecting the water quality condition in the SBR reaction tank 22 through a fourth detection device 54, and uploading the water quality condition to a computer 6 for recording;
(4) continuous operation
After the biochemical treatment is finished, opening an electronic valve, enabling the treated water to enter a secondary sedimentation tank 23, detecting the water quality condition in the secondary sedimentation tank 23 through a detection device five 55, enabling ammonia nitrogen in mixed liquid to be 21mg/L, opening a reflux device 24, and reintroducing the water in the secondary sedimentation tank 23 into an ACT reaction tank 21 for treatment for 10 hours; pumping the municipal sewage into the SBR reaction tank 22 for biochemical treatment for 5 hours; detecting the water quality condition in the secondary sedimentation tank 23 by a detection device five 55, wherein the ammonia nitrogen of the mixed liquid is 3.6mg/L, and adjusting the reaction time of the treatment time of the ACT reaction tank 21 and the SBR reaction tank 22 to be 20h and 10h respectively by a computer 6;
(5) deepening treatment
The water after the final biochemical treatment is introduced into a filtering tank 31 and a sterilizing tank 32 to be subjected to ultrafiltration membrane filtering and sterilization.
Wherein the hydraulic retention time is 32h, the sludge age is 30h, the average sludge concentration is 400mg/L, the temperature is room temperature, and the temperature is about 20 ℃; when the sludge amount of the process exceeds 15 percent, carrying out sewage disposal through a sludge disposal system 4;
the treatment results showed that the average removal rate of COD was 84.6%, the average removal rate of TP was 96%, the average removal rate of SS was 100%, and NO was3The average N removal was 93%.
Example 2: different from the embodiment 1, the device is used for treating the actual domestic sewage (COD is 180-3-N-16-20 mg/L) to process municipal sewage by ACT aerobic method, comprising the following steps:
(1) preparation phase
Taking activated sludge mixed liquor from a return sludge pipeline of a sewage treatment plant, injecting the activated sludge mixed liquor from the oil-water separation tank 14, pumping the activated sludge mixed liquor into an ACT reaction tank 21 and an SBR reaction tank 22 through a one-way pump, injecting municipal domestic sewage, and enabling the sludge concentration of the inoculated mixed liquor to be MLSS (maximum suspended solids) 400 ppm;
(2) starting phase
Injecting municipal sewage, starting the device, and roughly filtering the municipal sewage through a grating 11; standing for 1h in a grit chamber 12; pumping supernatant fluid of the grit chamber 12 to a primary sedimentation tank 13 to separate sludge with fine particles, detecting the water quality condition of the primary sedimentation tank 13 through a first detection device 51, and uploading the water quality condition to a computer 6 for recording; then the slag is removed, the floating oil is removed, the dispersed oil is removed and the filtration treatment is carried out in an oil-water separation tank 14;
(3) biochemical treatment
Pumping the municipal sewage treated by the oil-water separation tank 14 to an ACT reaction tank 21, detecting the water quality condition of the oil-water separation tank 14 after the work is finished through a second detection device 52, and uploading the water quality condition to the computer 6 for recording; performing biochemical treatment on the ACT reaction tank 21 for 25h, detecting the water quality condition inside the ACT reaction tank 21 through a third detection device 53, and uploading the water quality condition to a computer 6 for recording; pumping the municipal sewage into the SBR reaction tank 22 for biochemical treatment for 5 hours, detecting the water quality condition in the SBR reaction tank 22 through a fourth detection device 54, and uploading the water quality condition to a computer 6 for recording;
(4) continuous operation
After the biochemical treatment is finished, opening an electronic valve, allowing the treated water to enter a secondary sedimentation tank 23, and detecting the water quality condition in the secondary sedimentation tank 23 by using a detection device five 55, wherein the ammonia nitrogen in the mixed liquid is 2.9 mg/L;
(5) deepening treatment
The water after the final biochemical treatment is introduced into a filtering tank 31 and a sterilizing tank 32 to be subjected to ultrafiltration membrane filtering and sterilization.
Wherein the hydraulic retention time is 32h, the sludge age is 45h, the average sludge concentration is 400mg/L, the temperature is room temperature, and the temperature is about 20 ℃; when the sludge amount of the process exceeds 15 percent, carrying out sewage disposal through a sludge disposal system 4;
the treatment results showed that the average removal rate of COD was 86.7%, the average removal rate of TP was 97%, the average removal rate of SS was 100%, and NO was3The average N removal was 95%.
Example 3: different from the embodiment 1, the device is used for treating the actual domestic sewage (COD is 180-3-N-16-20 mg/L) to process municipal sewage by ACT aerobic method, comprising the following steps:
(1) preparation phase
Taking activated sludge mixed liquor from a return sludge pipeline of a sewage treatment plant, injecting the activated sludge mixed liquor from the oil-water separation tank 14, pumping the activated sludge mixed liquor into an ACT reaction tank 21 and an SBR reaction tank 22 through a one-way pump, injecting municipal domestic sewage, and enabling the sludge concentration of the inoculated mixed liquor to be MLSS (maximum suspended solids) 400 ppm;
(2) starting phase
Injecting municipal sewage, starting the device, and roughly filtering the municipal sewage through a grating 11; standing for 1h in a grit chamber 12; pumping supernatant fluid of the grit chamber 12 to a primary sedimentation tank 13 to separate sludge with fine particles, detecting the water quality condition of the primary sedimentation tank 13 through a first detection device 51, and uploading the water quality condition to a computer 6 for recording; then the slag is removed, the floating oil is removed, the dispersed oil is removed and the filtration treatment is carried out in an oil-water separation tank 14;
(3) biochemical treatment
Pumping the municipal sewage treated by the oil-water separation tank 14 to an ACT reaction tank 21, detecting the water quality condition of the oil-water separation tank 14 after the work is finished through a second detection device 52, and uploading the water quality condition to the computer 6 for recording; performing biochemical treatment on the ACT reaction tank 21 for 30 hours, detecting the water quality condition inside the ACT reaction tank 21 through a third detection device 53, and uploading the water quality condition to a computer 6 for recording; pumping the municipal sewage into the SBR reaction tank 22 for biochemical treatment for 10 hours, detecting the water quality condition in the SBR reaction tank 22 by a fourth detection device 54, and uploading the water quality condition to the computer 6 for recording;
(4) continuous operation
After the biochemical treatment is finished, opening an electronic valve, allowing the treated water to enter a secondary sedimentation tank 23, and detecting the water quality condition in the secondary sedimentation tank 23 by using a detection device five 55, wherein the ammonia nitrogen content of the mixed liquid is 2.7 mg/L;
(5) deepening treatment
The water after the final biochemical treatment is introduced into a filtering tank 31 and a sterilizing tank 32 to be subjected to ultrafiltration membrane filtering and sterilization.
Wherein the hydraulic retention time is 46h, the sludge age is 60h, the average sludge concentration is 400mg/L, the temperature is room temperature, and the temperature is about 20 ℃; when the sludge amount of the process exceeds 15 percent, carrying out sewage disposal through a sludge disposal system 4;
the treatment results showed that the average removal rate of COD was 87.3%, the average removal rate of TP was 97.3%, the average removal rate of SS was 100%, and the average removal rate of NO was 100%3The average N removal was 95.5%.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; 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 (4)
1. An ACT aerobic process municipal sewage treatment device is characterized by mainly comprising a pretreatment system (1), a biochemical treatment system (2), a deep treatment system (3), a sludge treatment system (4), a detection system (5), a computer (6) and a PLC control system (7);
the pretreatment system (1) comprises a grid (11), a grit chamber (12), a primary settling chamber (13) and an oil-water separation tank (14);
the biochemical treatment system (2) comprises an ACT reaction tank (21), an SBR reaction tank (22), a secondary sedimentation tank (23) and a reflux device (24);
the ACT reaction tank (21) is internally divided into a suspended sludge area (212) and a sewage area (213), the bottom of the ACT reaction tank (21) is provided with a water inlet (2110) and a sludge discharge port (2112), the upper part of the right side wall is provided with a water discharge port (2111), the interior of the ACT reaction tank is provided with an aeration device (215), the top end of the interior of the ACT reaction tank is provided with a three-phase separation device (216), the exterior of the ACT reaction tank is provided with a constant temperature device (217), the exterior of the aeration device (215) is connected with a gas supply pump (2150), the upper end of the three-phase separation device (216) is provided with; the aeration device (215) comprises a swing motor (2151), a linkage rotating rod (2152), a swing arm (2153), a pressurizing device (2154) and an aeration head (2155), wherein an air guide pipe (21501) is arranged inside the right half part of the linkage rotating rod (2152), and an air inlet pipe (21530) is arranged inside the swing arm (2153); the aeration head (2155) comprises a nozzle (21550), a diffuser pipe (21551) and a mixing nozzle (21552); the swing motor (2151) is arranged on the upper portion of the middle portion of the inner wall of the ACT reaction tank (21), the swing motor (2151) is connected with a swing arm (2153) through a linkage rotating rod (2152), the inlet of the pressurizing device (2154) is connected with the air supply pump (2150) through an air duct (21501), the outlet of the pressurizing device (2154) is connected with the nozzle (21550) and the diffuser pipe (21551) through an air inlet pipe (21530), the mixing nozzle (21552) is arranged on the nozzle (21550), and the outlet of the diffuser pipe (21551) is arranged at the lower end of the water inlet of the mixing nozzle (21552);
the advanced treatment system (3) comprises a filter tank (31) and a disinfection tank (32);
the grid (11) is connected with the grit chamber (12) through a conduit; the grit chamber (12) is connected with the primary sedimentation tank (13) through a conduit; the primary sedimentation tank (13) is connected with the oil-water separation tank (14) through a guide pipe; the oil-water separation tank (14) is connected with a water inlet (2110) of the ACT reaction tank (21) through a conduit;
a water outlet (2111) of the ACT reaction tank (21) is connected with the SBR reaction tank (22) through a conduit; the SBR reaction tank (22) is connected with a secondary sedimentation tank (23) through a conduit; the secondary sedimentation tank (23) is connected with the filter tank (31) through a conduit, and the secondary sedimentation tank (23) is respectively connected with the ACT reaction tank (21) and the SBR reaction tank (22) through a reflux device (24);
the filter tank (31) is connected with the disinfection tank (32) through a conduit; wherein the filtering tank (31) is an ultrafiltration membrane filtering tank;
the connection parts of the grating (11) and the grit chamber (12), the grit chamber (12) and the primary sedimentation tank (13), the primary sedimentation tank (13) and the oil-water separation tank (14), the oil-water separation tank (14) and the ACT reaction tank (21), the ACT reaction tank (21) and the SBR reaction tank (22), the SBR reaction tank (22) and the secondary sedimentation tank (23), the secondary sedimentation tank (23) and the filter tank (31), and the filter tank (31) and the disinfection tank (32) are all provided with one-way pumps;
the sludge treatment system (4) is connected with the grit chamber (12), the primary sedimentation tank (13), the oil-water separation tank (14), the ACT reaction tank (21), the SBR reaction tank (22) and the secondary sedimentation tank (23), and an electronic valve is arranged at the joint; the detection system (5) comprises a first detection device (51), a second detection device (52), a third detection device (53), a fourth detection device (54) and a fifth detection device (55);
the first detection device (51) comprises an influent water quality online monitor for influent COD and nitrogen and phosphorus concentration, and the first detection device (51) is used for detecting the water quality condition of the primary sedimentation tank (13);
the second detection device (52) comprises an online influent water quality monitor with COD and nitrogen and phosphorus concentration and a pH tester, and the second detection device (52) is used for detecting the water quality condition of the oil-water separation tank (14) after the operation is finished;
the third detection device (53) comprises a water level monitor and an influent water quality online monitor for COD and nitrogen and phosphorus concentration, and the third detection device (53) is used for detecting the water quality condition in the ACT reaction tank (21);
the detection device IV (54) comprises a water level monitor and an influent water quality on-line monitor for COD and nitrogen and phosphorus concentration, and the detection device IV (54) is used for detecting the water quality condition in the SBR reaction tank (22);
the fifth detection device (55) comprises an online influent water quality monitor with COD and nitrogen and phosphorus concentration and a pH tester, and the fifth detection device (55) is used for detecting the water quality condition in the secondary sedimentation tank (23);
wherein, the water quality on-line monitor adopts an STIP-scan on-line detector;
the computer (6) is connected with the detection system (5) through an interface and a lead; the PLC control system (7) is in signal connection with the computer (6), and the PLC control system (7) is connected with the pretreatment system (1), the biochemical treatment system (2), the deep treatment system (3), the sludge treatment system (4), the one-way pump and the electronic valve.
2. A process for treating municipal sewage using the apparatus of claim 1 by ACT aerobic process, comprising the steps of:
(1) preparation phase
Taking activated sludge mixed liquor from a return sludge pipeline of a sewage treatment plant, injecting the activated sludge mixed liquor from an oil-water separation tank (14), pumping the activated sludge mixed liquor into an ACT reaction tank (21) and an SBR reaction tank (22) through a one-way pump, injecting municipal domestic sewage, and enabling the sludge concentration of the inoculated mixed liquor to be MLSS (300-;
(2) starting phase
Injecting municipal sewage, starting a device, and roughly filtering the municipal sewage through a grating (11); then standing for 1h in a grit chamber (12); pumping supernatant fluid of the grit chamber (12) to a primary settling tank (13) to separate sludge with fine particles, detecting the water quality condition of the primary settling tank (13) through a first detection device (51), and uploading the water quality condition to a computer (6) for recording; then the slag is removed, the floating oil is removed, the dispersed oil is removed and the filtration treatment is carried out in an oil-water separation pool (14);
(3) biochemical treatment
Pumping the municipal sewage treated by the oil-water separation tank (14) to an ACT reaction tank (21), detecting the water quality condition of the oil-water separation tank (14) after the work is finished through a second detection device (52), and uploading the water quality condition to a computer (6) for recording; performing biochemical treatment on the ACT reaction tank (21) for a plurality of hours, detecting the water quality condition inside the ACT reaction tank (21) through a third detection device (53), and uploading the water quality condition to a computer (6) for recording; pumping the municipal sewage into the SBR reaction tank (22) for biochemical treatment for a plurality of hours, detecting the water quality condition in the SBR reaction tank (22) by a fourth detection device (54), and uploading the water quality condition to a computer (6) for recording;
(4) continuous operation
After the biochemical treatment is finished, opening the electronic valve, allowing the treated water to enter a secondary sedimentation tank (23), and detecting the water quality condition inside the secondary sedimentation tank (23) through a fifth detection device (55); when the ammonia nitrogen of the mixed solution is more than 10mg/L, the water in the secondary sedimentation tank (23) is reintroduced into the ACT reaction tank (21) by the reflux device (24); when the ammonia nitrogen of the mixed solution is between 5 and 10mg/L, the water in the secondary sedimentation tank (23) is reintroduced into the SBR reaction tank (22) by the reflux device (24); when the ammonia nitrogen in the secondary sedimentation tank (23) is less than 5mg/L, the start of the secondary sedimentation tank is confirmed to be finished and the secondary sedimentation tank enters a stable operation stage, and the computer (6) records and adjusts the processing time of the ACT reaction tank (21) and the SBR reaction tank (22);
(5) deepening treatment
And introducing the water after the final biochemical treatment into a filtering tank (31) and a disinfecting tank (32) for ultrafiltration membrane filtering and disinfection.
3. The process of claim 2, wherein the hydraulic retention time of the process is 30-60 hours.
4. The process of ACT aerobic treatment of municipal sewage according to claim 2, wherein when the amount of sludge in the process exceeds 15%, the sewage is discharged through the sludge treatment system (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711174619.4A CN107892434B (en) | 2017-11-22 | 2017-11-22 | Equipment and process for treating municipal sewage by ACT aerobic method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711174619.4A CN107892434B (en) | 2017-11-22 | 2017-11-22 | Equipment and process for treating municipal sewage by ACT aerobic method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107892434A CN107892434A (en) | 2018-04-10 |
| CN107892434B true CN107892434B (en) | 2020-10-02 |
Family
ID=61805763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711174619.4A Active CN107892434B (en) | 2017-11-22 | 2017-11-22 | Equipment and process for treating municipal sewage by ACT aerobic method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107892434B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674628A (en) * | 2012-05-03 | 2012-09-19 | 波鹰(厦门)科技有限公司 | Sewage treatment and regeneration cyclic utilization device and sewage treatment and regeneration cyclic utilization method |
| CN103819049A (en) * | 2013-12-23 | 2014-05-28 | 桑德集团有限公司 | Sewage treatment method and system |
| CN204958665U (en) * | 2015-08-26 | 2016-01-13 | 合肥中盛水务发展有限公司 | Treatment of domestic sewage's automated control system |
| CN105923771A (en) * | 2016-06-17 | 2016-09-07 | 华北水利水电大学 | Self-circulation biological denitrification reactor |
| CN107352641A (en) * | 2017-08-17 | 2017-11-17 | 安徽特威达水电设备有限公司 | A kind of integrated sewage processing tower |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100422891B1 (en) * | 1996-09-03 | 2004-03-12 | 네이트 인터내셔널 | Modular filtration system |
-
2017
- 2017-11-22 CN CN201711174619.4A patent/CN107892434B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674628A (en) * | 2012-05-03 | 2012-09-19 | 波鹰(厦门)科技有限公司 | Sewage treatment and regeneration cyclic utilization device and sewage treatment and regeneration cyclic utilization method |
| CN103819049A (en) * | 2013-12-23 | 2014-05-28 | 桑德集团有限公司 | Sewage treatment method and system |
| CN204958665U (en) * | 2015-08-26 | 2016-01-13 | 合肥中盛水务发展有限公司 | Treatment of domestic sewage's automated control system |
| CN105923771A (en) * | 2016-06-17 | 2016-09-07 | 华北水利水电大学 | Self-circulation biological denitrification reactor |
| CN107352641A (en) * | 2017-08-17 | 2017-11-17 | 安徽特威达水电设备有限公司 | A kind of integrated sewage processing tower |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107892434A (en) | 2018-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3611135B1 (en) | Device and method for pharmaceutical wastewater treatment with high efficiency resource recovery and low energy consumption | |
| CN106116031A (en) | A kind of efficient treatment process of slaughtering wastewater | |
| CN203820608U (en) | Village and town sewage treatment and deep purification integrated equipment | |
| CN104261617A (en) | Treatment method of waste emulsion | |
| CN106145506A (en) | The apparatus and method of coal chemical industrial waste water Anammox coupling heterotrophic denitrification denitrogenation | |
| CN109133524A (en) | The processing system and processing method of high COD medicine intermediate wastewater from chemical industry with high salt | |
| CN210736456U (en) | Treatment device for zero discharge of garbage leachate in garbage incineration power station | |
| CN101717168A (en) | Method for treating wastewater in glycol production | |
| CN107827324B (en) | Urban sewage comprehensive treatment system | |
| CN104773908A (en) | Endocrine disruptor-containing pickling wastewater treatment apparatus and method thereof | |
| CN107892434B (en) | Equipment and process for treating municipal sewage by ACT aerobic method | |
| CN107473382A (en) | By controlling dissolved oxygen to realize sewage carbon nitrogen while the bioremediation removed | |
| CN209890451U (en) | Nitrification and denitrification circulating water treatment system | |
| CN111995193A (en) | Integrated intelligent device and method for advanced treatment of medical wastewater | |
| CN206970397U (en) | Sewage treatment unit | |
| CN103910469B (en) | The treatment process of the brine waste that food-processing produces | |
| CN203382613U (en) | Treatment equipment for removing fluorine and calcium ions in wastewater of coal chemical industries | |
| CN107381828B (en) | Composite microbial preparation for auxiliary treatment of waste cutting fluid and use method | |
| CN106865888B (en) | A method of removing refinery(waste) water total nitrogen | |
| CN205328795U (en) | Wet spinning acrylic fibres production polymerization effluent disposal system | |
| CN212610162U (en) | Resource recycling treatment system for leachate of waste incineration plant | |
| CN211284066U (en) | Kitchen waste fermentation liquor treatment system | |
| CN115572014A (en) | On-line strengthening treatment method and system for microorganisms in refractory sewage | |
| CN107032495A (en) | A kind of biological treatment group technology of the high salinity pharmacy waste waters of high COD | |
| CN110451635B (en) | Biological treatment system and method for high-salt high-organic matter industrial wastewater |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |