CN209923140U - Fermentation-enhanced rural sewage integrated treatment equipment - Google Patents
Fermentation-enhanced rural sewage integrated treatment equipment Download PDFInfo
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- CN209923140U CN209923140U CN201920454103.3U CN201920454103U CN209923140U CN 209923140 U CN209923140 U CN 209923140U CN 201920454103 U CN201920454103 U CN 201920454103U CN 209923140 U CN209923140 U CN 209923140U
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Abstract
The utility model provides a rural sewage integration treatment facility of fermentation intensive type, this equipment include the anaerobism group of group, oxygen deficiency group of group, good oxygen group of group and the sedimentation tank of establishing ties in order, the anaerobism group of group the oxygen deficiency group of group the good oxygen group of group with the sedimentation tank is integrated to be installed together, the anaerobism group of group is connected with first inlet tube, the oxygen deficiency group of group is connected with the second inlet tube, the mixed liquid has been held to good oxygen group of group, good oxygen group with be connected with between the oxygen deficiency group of group and be used for returning the row the back flow of mixed liquid, the mud has been held in the sedimentation tank, the sedimentation tank with be connected with between the anaerobism group of group and be used for returning the row the first time calandria of mud, the sedimentation tank with be connected with between the oxygen. The utility model solves the problem that the water quality after the conventional treatment device for rural sewage requires the seasonality instability of ammonia nitrogen indexes.
Description
Technical Field
The utility model relates to a rural sewage treatment technical field, concretely relates to rural sewage integration treatment facility of type is reinforceed in fermentation.
Background
In the process of national new rural construction and rural ecological management, the traditional rural sewage collecting and treating system comprises: a domestic sewage collecting pipeline (a dry toilet is changed into a water flushing type toilet), a pipeline network (the middle or the middle has domestic sewage of a public toilet, breeding wastewater containing livestock excrement and farmland drainage rainwater access containing nitrogen and phosphorus chemical fertilizers), a rural sewage distributed conventional treatment device (a buried type or an aboveground type, and facilities such as an integrated activated sludge method device/an integrated biofilm method device/a purification tank/an artificial wetland/an ecological pond are adopted), and tail water reaching the standard after treatment is discharged (discharged to a natural river water body to serve as ecological water supplement and the like).
For conventional rural sewage treatment devices, buried or aboveground integrated devices such as activated sludge processes and biofilm processes, or ecological treatment facilities such as artificial wetlands or ecological ponds are mostly adopted. The above treatment processes have their own application and operating requirements. The rural sewage collection pipe network is limited in planning fragmentation, scattered distribution and diversified water inlet sources, the collected sewage and rain sewage flow, more impurity suspended matters, more pipeline leakage, larger fluctuation of water quantity affected by drought seasons and rain seasons, less biochemical and easily degradable components of water quality, high nitrogen and phosphorus content and the like, the conventional treatment device has the characteristics of lacking flexibility in the process mode response change aspect, particularly, the effluent water quality ammonia nitrogen, total nitrogen and total phosphorus do not reach the standard under the conditions of low BOD (biochemical oxygen demand), low B/C (B/C) value and high ammonia nitrogen concentration, the effluent water quality requirement of high-standard rural sewage cannot be met, the seasonal instability of the ammonia nitrogen index of the effluent water quality is caused, and the eutrophication of the stored water body is promoted.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the integrated fermentation enhanced rural sewage treatment equipment is provided so as to solve the problem that the water quality treated by the conventional rural sewage treatment device requires the seasonality of ammonia nitrogen indexes.
In order to achieve the purpose, the fermentation-enhanced rural sewage integrated treatment equipment comprises an anaerobic tank group, an anoxic tank group, an aerobic tank group and a sedimentation tank which are connected in series in sequence, wherein the anaerobic tank group, the anoxic tank group, the aerobic tank group and the sedimentation tank are integrally installed together, the anaerobic tank group is connected with a first water inlet pipe, the anoxic tank group is connected with a second water inlet pipe, mixed liquor is contained in the aerobic tank group, a return pipe for discharging the mixed liquor is connected between the aerobic tank group and the anoxic tank group, sludge is contained in the sedimentation tank, a first return pipe for discharging the sludge is connected between the sedimentation tank and the anaerobic tank group, and a second return pipe for discharging the sludge is connected between the sedimentation tank and the anoxic tank.
Further, still include the controller and be used for acquireing the monitoring devices of the quality of water of pending sewage, monitoring devices signal connection in the controller, install first electric pump on the first inlet tube, install the second electric pump on the second inlet tube, install the third electric pump on the first time calandria, install the fourth electric pump on the second time calandria, first electric pump the second electric pump the third electric pump with fourth electric pump difference signal connection in the controller.
Further, the monitoring device comprises a temperature monitoring unit for acquiring the temperature of the sewage to be measured.
Further, the temperature monitoring unit is an ORP meter.
Further, the anaerobic pool group comprises at least two first pool bodies which are connected in series.
The beneficial effects of the utility model reside in that, the utility model discloses the anaerobic fermentation of fermentation enhanced type rural sewage integration treatment facility through mixed liquid or part, whole backward flow mud is reinforceed, can obtain the high-quality endogenous carbon source of high-quality quick bioabsorption under low oxidation reduction potential, slow speed stirring, suitable fermentation section mud age control, for subsequent conventional biological nitrogen and phosphorus removal AO technology provides bait, and has practiced thrift the purchase of commodity carbon source, has saved the operation medicament cost. The quality of the ammonia nitrogen in the effluent can be controlled below 1.5mg/L, the total nitrogen index can be controlled below 10mg/L, and the total phosphorus index can be controlled below 0.5. On the other hand, the utility model discloses rural sewage integration treatment facility of fermentation intensive type utilizes the endogenous carbon source of cell and the adsorbed organic particulate matter of cell outer wall at the anaerobic fermentation section through fermentation type phosphorus-accumulating bacteria, for example components such as glucose, amino acid, lipid, high molecular weight's carbohydrate, polysaccharide carry out hydrolytic fermentation, except can accomplishing the phosphorus release of complete biological dephosphorization process, can also produce high-quality carbon sources such as volatile fatty acid. In the anaerobic subsequent anoxic denitrification stage, in addition to the conventional denitrification of volatile fatty acid substrates of denitrifying bacteria, denitrification of endogenous organic substrates of fermented phosphorus-accumulating bacteria and phosphorus removal are also carried out; in the subsequent aerobic section of the oxygen deficiency, the conventional organic matter aerobic degradation and aerobic nitrification occur. The device can be used for advantageously culturing the fermentation type phosphorus-accumulating bacteria which the conventional biological nitrogen removal system does not have, and is coupled with other conventional strains to synergistically and efficiently carry out biological nitrogen and phosphorus removal. The operation process is not influenced by seasonal water temperature change.
Drawings
FIG. 1 is a schematic diagram of the components and layout of the fermentation-enhanced rural sewage integrated treatment equipment of the embodiment of the utility model.
FIG. 2 is a schematic structural diagram of the fermentation-enhanced rural sewage integrated treatment equipment of the embodiment of the utility model.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.
Fig. 1 is the composition and layout schematic diagram of the fermentation enhanced rural sewage integrated treatment equipment of the embodiment of the utility model, and fig. 2 is the structural schematic diagram of the fermentation enhanced rural sewage integrated treatment equipment of the embodiment of the utility model.
Referring to fig. 1 and 2, the utility model provides a fermentation-enhanced rural sewage integrated treatment device, which comprises an anaerobic tank group 1, an anoxic tank group 2, an aerobic tank group 4 and a sedimentation tank 5 which are connected in series in sequence. The anaerobic tank group 1, the anoxic tank group 2, the aerobic tank group 4 and the sedimentation tank 5 are integrally installed together. The anaerobic tank group 1 is connected with a first water inlet pipe 61. The anoxic tank group 2 is connected with a second water inlet pipe 62. The aerobic tank is filled with mixed liquid. A return pipe 7 for returning and discharging the mixed liquid is connected between the aerobic tank group 4 and the anoxic tank group 2. The sedimentation tank 5 contains sludge. A first return drain pipe 81 for returning and draining the sludge is connected between the sedimentation tank 5 and the anaerobic tank group 1. A second return drain pipe 82 for returning and draining the sludge is connected between the sedimentation tank 5 and the anoxic tank.
As a better implementation mode, the fermentation enhanced rural sewage integrated treatment equipment of the utility model also comprises a controller and a monitoring device for acquiring the temperature of the sewage. The monitoring device is in signal connection with the controller. The first electric pump is mounted on the first water inlet pipe 61. A second electric pump is mounted on the second inlet pipe 62. The third electric pump is mounted on the first return pipe 81. The fourth electric pump is mounted on the second return-discharge pipe 82. The first electric pump, the second electric pump, the third electric pump and the fourth electric pump are respectively in signal connection with the controller.
In this embodiment, the monitoring device includes a temperature monitoring unit for acquiring the temperature of the sewage to be measured and a signal transmitter. The signal generator is connected with the controller through signals. Further, the temperature monitoring unit is an ORP meter.
Specifically, the monitoring device monitors the water quality condition of the sewage to be detected in real time, generates a water quality signal carrying the water quality condition and generates a water quality signal to the outside. The water quality condition comprises indexes such as Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD), ammonia nitrogen, total phosphorus, temperature and the like. The controller receives the water quality signal, judges based on the water quality condition index of predetermineeing according to the water quality condition the utility model discloses a rural sewage integration treatment facility operational mode of fermentation intensive type. And the controller correspondingly controls the first electric pump, the second electric pump, the third electric pump and the fourth electric pump to make corresponding actions to implement the corresponding operation modes based on the judged operation modes.
The utility model discloses a rural sewage integration treatment facility operation mode of fermentation enhanced type includes: the operation mode is a mixed liquid fermentation strengthening operation mode; the operation mode II is a fermentation strengthening operation mode of partial return sludge (10-30 percent); and a third operation mode, namely a fermentation strengthening operation mode of all the returned sludge (100%).
The anaerobic pool group 1 comprises at least two first pool bodies 11. In this embodiment, the anaerobic tank group 1 includes two first tank bodies (i.e. a first tank body a and a first tank body B). At least two first tank bodies 11 are connected in series. Correspondingly, the anoxic tank group comprises at least two second tank bodies 21 (namely a second tank body C and a second tank body D), and the aerobic tank group comprises at least two third tank bodies (namely a third tank body G and a third tank body H). The number of the specific tanks included in the tank group is determined according to the sewage quantity, and the sewage treatment quantity is large, so that a larger number of tanks can be included. In the embodiment, a transition tank is arranged between the aerobic tank group and the anoxic tank group, the transition tank is provided with a microporous aeration disc, and the transition tank can operate according to the anoxic tank and the aerobic tank.
The utility model discloses rural sewage integration treatment facility of fermentation intensification type adopts integral steel sheet structure, or prefabricated resin concrete mosaic structure. When the prefabricated resin concrete splicing structure is adopted, sealing glue is adhered between the bell and spigot ports of the prefabricated plates, the holes of the pipelines are reserved in the prefabricated plates, and after threading, the holes are blocked by the two-component polysulfide sealing glue or the prefabricated glass steel plate flanges are spliced. The utility model provides a rural sewage integration treatment facility of type is reinforceed in fermentation adopts the steel sheet structure, and pool wall all around adopts bodiness carbon steel sheet to weld annular ribbed channel-section steel structure outward, and inside establishes the detachable division board of carbon steel and forms a plurality of cell bodies, and division board metallic paint is inside and outside anticorrosive. The fermentation strengthening type rural sewage integrated treatment equipment can be installed on the ground or semi-underground, the foundation adopts a cast-in-situ steel concrete foundation, and the gravity resists floating. The utility model provides a rural sewage integration treatment facility's of fermentation intensive type inside is separated into 9 relatively independent reaction zones (cell body A ~ I promptly) by 4 vertical fixed steel baffles, 2 levels to fixed steel baffle (horizontal baffle 1 ~ 2), totally 6 baffles. The height of the tank body is 4.5-5.5 m, the depth is 3.5-4.5 m, and the height of the tank wall above the liquid level in the tank body is 1.0 m. The bottom and the upper part of the vertical fixed clapboard are provided with a plurality of overflowing holes which can be opened and closed. The overflowing hole is used for discharging the materials in the upstream tank body to the downstream adjacent tank body.
The center positions of the top of the pool body A, the pool body B, the pool body C, the pool body D, the pool body E and the transition pool F are respectively provided with 1 vertical shaft type stirrer. The sedimentation tank is provided with an electric rotary decanter. The utility model discloses a rural sewage integration treatment facility of fermentation enhanced type on the steel concrete foundation platform in the outside all around, placed 1 set of grid finished well of intaking (built-in stainless steel artificial grid), 2 intake pumps (first electric pump and second electric pump), 2 mixed liquid internal reflux pumps (install on the back flow), 2 mud backwash pumps (third electric pump and fourth electric pump), 2 surplus sludge pump, 2 blast aeration roots fan pump (install in good oxygen pond). The device is arranged at the position of 1.0m ultrahigh from the upper part of the water surface of the tank body to the top of the tank.
In this embodiment, the fermentation-enhanced integrated treatment equipment for rural sewage of the utility model adopts an integral steel plate structure and further comprises an aeration component 9. The aeration assembly 9 comprises a fan 91, an aeration air pipe 92 and a microporous aeration disc 93. The transition tank F, the tank body G and the tank body H are respectively provided with a microporous aeration disk 93. The microporous aeration disk 93 is connected to the blower 91 through an aeration air pipe 92.
The bottom of the sedimentation tank is provided with 3 sludge backflow and residual sludge discharge pipes along the length direction of the sedimentation tank, the precipitated sludge is partially used for backflow, and the residual sludge is discharged to the outside.
1 set of three-channel oxidation-reduction potential (ORP)/temperature/pH online instrument is arranged in the anaerobic pool group, so that ORP indexes are analyzed in time, and the fermentation strengthening degree of the anaerobic zone is reflected. 1 set of three-channel oxidation-reduction potential (ORP)/temperature/pH online instrument is arranged in the anoxic tank group to analyze the ORP index of the anoxic zone in time. The aerobic tank group is internally provided with 1 set of Dissolved Oxygen (DO) online instrument and 1 set of sludge concentration (MLSS) online instrument, the dissolved oxygen concentration of the aerobic zone is analyzed in time, the air volume is adjusted in time according to the nitrification effect of the effluent, the total air volume is adjusted through the frequency conversion of a fan, and the distribution of the inlet air volume in different aeration zones is adjusted through diamond valves of different aeration zones (F zone, G zone and H zone) in the aerobic tank group. Set up 1 set of ultrasonic wave level gauge online instrument in the sedimentation tank, in time detect the effective liquid level in the sedimentation tank.
The first electric pump, the second electric pump, the third electric pump, the fourth electric pump, the mixed liquid reflux pump, the sludge reflux pump, the residual sludge pump and the fan all consider the frequency conversion operation, and the frequency conversion operation is adjusted at any time according to the signals shown by the online instruments and preset programs. The outlet of each type of water pump is provided with 1 set of electromagnetic flowmeter, the outlet of the fan is provided with 1 set of vortex shedding flowmeter, and the flow of time-resolved water, mud and gas is analyzed.
The utility model discloses a rural sewage integration treatment facility of fermentation enhanced type possesses three kinds of sewage treatment operational modes, include: the operation mode is a mixed liquid fermentation strengthening operation mode; the operation mode II is a fermentation strengthening operation mode of partial return sludge (10-30 percent); and a third operation mode, namely a fermentation strengthening operation mode of all the returned sludge (100%).
Specifically, the first operation mode is as follows: and (3) a mixed liquid fermentation strengthening operation mode.
According to the Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD), ammonia nitrogen, total phosphorus and different temperatures of the water quality of inlet water (rural sewage to be detected), if the carbon source of the inlet water is insufficient (the BOD of the inlet water is lower than 80mg/L or the BOD/COD ratio of the inlet water is lower than 0.20), the ammonia nitrogen value is not high (the ammonia nitrogen of the inlet water is lower than 15mg/L) and the water temperature is proper (not lower than 25 ℃, summer and autumn), the method can be operated according to the mixed liquid fermentation strengthening coupling traditional A/A/O process (mixed liquid fermentation strengthening + Anaerobic/Anoxic/Aerobic process, MLSSFERmenter + Anaerobic/Aerobic, MF + A/A/O process for short).
The inlet water respectively enters an anaerobic tank group (mixed liquid anaerobic fermentation tank) through a first water inlet pipe and enters an anoxic tank group (anoxic denitrification tank/denitrification dephosphorization tank) through a second water inlet pipe according to the proportion. Specifically, 10-30% of the inlet water enters the anaerobic tank group, and 70-90% of the inlet water enters the anoxic tank group. The influent water is subjected to mixed liquid intensified fermentation in an anaerobic tank group, the retention time is 10-12 hr, and the oxidation-reduction potential ORP value of the anaerobic condition is controlled to be-250 mv to-30Between 0mv, the volume stirring power is not more than 2w/m3The anaerobic hydrolysis, fermentation and acidification of the influent water (sewage) are carried out in the anaerobic tank group, the granular slowly-degraded organic matters adsorbed on the outer wall of the sludge microorganism and the cytoplasm of the inner wall of the sludge microorganism are subjected to anaerobic fermentation to generate high-quality carbon sources such as volatile fatty acid, the sewage in the anaerobic tank group is elutriated under the slow stirring of the stirrer 12 in the anaerobic tank group to obtain fermentation liquor, and the fermentation liquor takes away sufficient high-quality carbon sources and flows into the anoxic tank group.
Meanwhile, all the precipitated sludge in the sedimentation tank flows back to the anoxic tank group, the mixed liquor (the mixed liquor is the mixture of sewage and activated sludge in the reaction tank) in the aerobic tank group flows back (the ratio of the mixed liquor of the internal reflux to the water inflow and the internal reflux ratio of the mixed liquor are adjustable within the range of 100-400%), and 70-90% of water enters the anoxic tank group, so that the flowing fermentation liquor, the newly-fed water, the mixed liquor and the precipitated sludge are subjected to conventional anoxic denitrification reaction, and meanwhile, fermentation type phosphorus accumulating bacteria denitrification dephosphorization is carried out, and the two biological denitrification reactions cooperate to strengthen biological denitrification to obtain denitrification liquid.
Discharging the denitrification liquid into an aerobic tank group, wherein the aerobic tank group is provided with a Roots blower to work. According to the dissolved oxygen requirement of the denitrification liquid in the aerobic tank group, the dissolved oxygen of the aerobic tank is ensured to be not less than 2-4 mg/L. The denitrification liquid is discharged into the sedimentation tank after the biochemical reaction of the aerobic tank group.
And (3) intermittently starting an excess sludge pump arranged in the sedimentation tank, and regularly discharging the excess sludge in the sedimentation tank (1-2 times per day, 1-2 hr each time). 3 sludge at the bottom of the sedimentation tank flows back and electric sludge discharge valves arranged on the residual sludge discharge pipe are opened alternately. And after the effluent horizontal flow type sedimentation tank which meets the treatment standard is completely settled in the sedimentation tank, the effluent horizontal flow type sedimentation tank is discharged through a decanter after meeting the treatment standard.
The second operation mode is as follows: partial return sludge (10-30%) is fermented and intensified.
According to the difference of Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD), ammonia nitrogen, total phosphorus and temperature of inlet water, if the carbon source of inlet water is insufficient (the BOD of inlet water is lower than 80mg/L or the BOD/COD ratio of inlet water is lower than 0.20), the ammonia nitrogen value is higher (the ammonia nitrogen of inlet water is higher than 15mg/L) and the water temperature is unfavorable (15-25 ℃ in spring), the method can be operated according to the Partial reflux sludge (10-30%) fermentation strengthening coupling with the traditional A/A/O process (mixed liquid fermentation strengthening + Anaerobic/Anoxic/Aerobic process, Partial Ras Fermenter + Anaerobic/Aerobic/Aerobic, PRF + A/A/O process for short).
In the operation process, part of the return sludge (10-30%) is slowly stirred under the anaerobic condition, the fermentation is carried out to generate volatile fatty acid, a high-quality carbon source required by biological phosphorus release is supplemented, the oxidation-reduction potential ORP value of the anaerobic condition is controlled to be-250 mv-400 mv, and the volume stirring power is not more than 4w/m3And the retention time of the fermentation section is 8-10 hr.
The inlet water completely enters an anoxic tank group (an anoxic denitrification tank/a denitrification dephosphorization tank). Discharging 10-30% of the reflux sludge in the sedimentation tank back to an anaerobic tank group, and performing anaerobic fermentation strengthening on part of the entering reflux sludge in the anaerobic tank group; and the residual return sludge in the sedimentation tank is discharged back to the anoxic tank group and flows back together with all the inlet water and all the mixed liquor to perform two biological denitrification reactions to cooperatively strengthen the biological denitrification. The fermentation strengthening mechanism is the same as the operation mode I.
According to the dissolved oxygen requirement of the aerobic tank, the fan works to perform variable frequency air volume adjustment and air volume valve adjustment, so that the dissolved oxygen of the aerobic tank is not lower than 2-4 mg/L. The excess sludge pump is intermittently started, and excess sludge is discharged at regular time (1-2 times per day, 1-2 hr each time). The electric sludge discharge valves at the bottom of the sedimentation tank are alternately opened. And after the horizontal flow type sedimentation tank treated from the sedimentation tank is completely settled, the treated water is discharged through a decanter after reaching the standard.
The third operation mode is as follows: the whole return sludge (100%) is fermented and strengthened in operation mode.
According to the difference of Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD), ammonia nitrogen, total phosphorus and temperature of inlet water, if the carbon source of inlet water is insufficient (the BOD of inlet water is lower than 80mg/L or the BOD/COD ratio of inlet water is lower than 0.20), the ammonia nitrogen value is higher (the ammonia nitrogen of inlet water is higher than 15mg/L) and the water temperature is lower (less than 15 ℃ in winter), the method can be operated according to the reinforced coupling of the fermentation of all return sludge (100%) with the traditional A/A/O process (the reinforced fermentation of mixed liquor + Anaerobic/Anoxic/Aerobic process, Complete Ras Fermenter + Anaerobic/Aerobic, CRF + A/A/O process for short).
In the operation process, the total return sludge (100 percent) is slowly stirred under the anaerobic condition, volatile fatty acid is generated by fermentation, high-quality carbon source required by biological phosphorus release is supplemented, the oxidation-reduction potential ORP value of the anaerobic condition is controlled between-250 mv to-400 mv, and the volume stirring power is not more than 4w/m3And the retention time of the fermentation section is 6-8 hr.
The inlet water completely enters an anoxic tank group (an anoxic denitrification tank/a denitrification dephosphorization tank). All sludge in the sedimentation tank is discharged back to the anaerobic tank group, and all the returned sludge entering the sedimentation tank is subjected to anaerobic fermentation reinforcement; then enters an anoxic tank group, and flows back together with all the inlet water and all the mixed liquid to carry out two biological denitrification reactions to cooperatively strengthen the biological denitrification. The fermentation strengthening mechanism is the same as the operation mode I.
According to the dissolved oxygen requirement of the aerobic tank, the fan works to perform variable frequency air volume adjustment and air volume valve adjustment, so that the dissolved oxygen of the aerobic tank is not lower than 2-4 mg/L. The excess sludge pump is intermittently started, and excess sludge is discharged at regular time (1-2 times per day, 1-2 hr each time). The electric sludge discharge valves at the bottom of the sedimentation tank are alternately opened. And after the horizontal flow type sedimentation tank treated from the sedimentation tank is completely settled, the treated water is discharged through a decanter after reaching the standard.
The utility model provides a sewage treatment method, which comprises the following steps:
s1: distributing and discharging the sewage into an anaerobic tank group and an anoxic tank group according to a first proportion according to the water quality condition of the sewage to be treated; and distributing and discharging the sludge contained in the sedimentation tank to an anaerobic tank group and an anoxic tank group according to a second proportion.
Specifically, the integrated treatment equipment for the sewage and the fermentation enhanced rural sewage comprises an anaerobic tank group 1, an anoxic tank group 2, an aerobic tank group 4 and a sedimentation tank 5 which are sequentially connected in series, wherein the anaerobic tank group 1, the anoxic tank group 2, the aerobic tank group 4 and the sedimentation tank 5 are integrally installed together, the anaerobic tank group 1 is connected with a first water inlet pipe 61, the anoxic tank group 2 is connected with a second water inlet pipe 62, mixed liquid is contained in the aerobic tank group, a return pipe 7 is connected between the aerobic tank group 4 and the anoxic tank group 2, sludge is contained in the sedimentation tank 5, a first return pipe 81 is connected between the sedimentation tank 5 and the anaerobic tank group 1, and a second return pipe 82 is connected between the sedimentation tank 5 and the anoxic tank; according to the water quality condition of the sewage, the sewage is distributed according to a first proportion and is discharged into the anaerobic tank group 1 through a first water inlet pipe 61 and is discharged into the anoxic tank group 2 through a second water inlet pipe 62; and the sludge contained in the sedimentation tank 5 is distributed according to a second proportion, and is discharged back to the anaerobic tank group 1 through a first back discharge pipe 81 and is discharged back to the anoxic tank group 2 through a second back discharge pipe 82.
When the carbon source of the sewage to be detected is insufficient (the BOD of the sewage to be detected is lower than 80mg/L, or the BOD/COD ratio of the sewage to be detected is lower than 0.20), the ammonia nitrogen value is not high (the ammonia nitrogen value of the sewage to be detected is lower than 15mg/L) and the water temperature is appropriate (the temperature of the sewage to be detected is higher than 25 ℃), discharging 10-30% of the sewage to be detected into the anaerobic tank group 1 through a first water inlet pipe 61 and discharging the rest of the sewage into the anoxic tank group 2 through a second water inlet pipe 62; the whole sludge contained in the sedimentation tank 5 is discharged back to the anoxic tank group 2 through the second back discharge pipe 82.
When the carbon source of the sewage to be detected is insufficient (the BOD of the sewage to be detected is lower than 80mg/L, or the BOD/COD ratio of the sewage to be detected is lower than 0.20), the ammonia nitrogen value is high (the ammonia nitrogen value of the sewage to be detected is higher than 15mg/L), and the water temperature is not proper (the temperature of the sewage is more than or equal to 15 ℃ and less than or equal to 25 ℃), discharging all the sewage to be detected into the anoxic tank group 2 through the second water inlet pipe 62; 10% -30% of the sludge contained in the sedimentation tank 5 is discharged back to the anaerobic tank group 1 through a first back-discharge pipe 81, and 70% -90% of the sludge contained in the sedimentation tank 5 is discharged back to the anoxic tank group 2 through a second back-discharge pipe 82.
When the carbon source of the sewage to be detected is insufficient (the BOD of the sewage to be detected is lower than 80mg/L, or the BOD/COD ratio of the sewage to be detected is lower than 0.20), the ammonia nitrogen value is high (the ammonia nitrogen value of the sewage to be detected is higher than 15mg/L), and the water temperature is low (the temperature of the sewage to be detected is lower than 25 ℃), discharging all the sewage to be detected into the anoxic tank group 2 through the second water inlet pipe 62; the whole sludge contained in the sedimentation tank 5 is discharged back to the anaerobic tank group 1 through the first drain-back pipe 81.
S2: mixing sewage and the sludge drained back in the anaerobic tank group 1 for strengthening fermentation to obtain fermentation liquor.
S3: discharging the fermentation liquor into the anoxic tank group, and discharging the mixed liquor contained in the aerobic tank group back into the anoxic tank group through a return pipe.
Specifically, the fermentation liquid is discharged into the anoxic tank group 2, and the mixed liquid contained in the aerobic tank group 4 is discharged back into the anoxic tank group 2 through the return pipe 7.
S4: and denitrifying the fermentation liquor, the mixed liquor and the sludge in the anoxic tank group 2 to obtain a denitrification liquid.
S5: discharging the denitrification liquid into the aerobic tank for aeration, and then discharging into the sedimentation tank 5 for sedimentation to obtain sludge and purified water reaching the standard.
And part of the precipitated sludge is used for the S1 step and is discharged into the anaerobic tank group and the anoxic tank group according to the second proportion distribution, and the rest part of the sludge is discharged intermittently.
The utility model discloses rural sewage integration treatment facility of fermentation intensive type is reinforceed through the fermentation, for biological nitrogen and phosphorus removal provides endogenous high-quality carbon source, practices thrift outsourcing commodity carbon source and throws and throw, saves the running cost, and the high-quality assurance goes out water quality of water.
Specifically, by enhancing the anaerobic fermentation of the mixed liquor or partial or total return sludge, high-quality endogenous carbon sources capable of being quickly and biologically absorbed can be obtained under the conditions of low oxidation-reduction potential, slow stirring and proper sludge age control in the fermentation period, so that bait is provided for the subsequent conventional biological nitrogen and phosphorus removal A/A/O process, the purchase of commercial carbon sources is saved, and the cost of operating agents is saved. The quality of the ammonia nitrogen in the effluent can be controlled below 1.5mg/L, the total nitrogen index can be controlled below 10mg/L, and the total phosphorus index can be controlled below 0.5.
The utility model discloses rural sewage integration treatment facility's of fermentation intensive type on the other hand passes through the dominant incubation fermentation type and gathers phosphorus fungus, except providing high-quality carbon source, can also carry out the denitrification dephosphorization, strengthens the denitrification with traditional nitrobacteria, denitrification fungus coupling, ensures the high standard of total nitrogen of play water and discharges to the process is strengthened not influenced by seasonal temperature variation to biological nitrogen and phosphorus removal.
Specifically, in the anaerobic fermentation stage, the fermentation type phosphorus accumulating bacteria perform hydrolytic fermentation by utilizing cell endogenous carbon sources and organic particles adsorbed by cell outer walls, such as glucose, amino acids, lipids, high molecular weight carbohydrates, polysaccharides and other components, so that phosphorus release in the complete biological phosphorus removal process can be completed, and high-quality carbon sources such as volatile fatty acids can be generated. In the anaerobic subsequent anoxic denitrification stage, in addition to the conventional denitrification of volatile fatty acid substrates of denitrifying bacteria, denitrification of endogenous organic substrates of fermented phosphorus-accumulating bacteria and phosphorus removal are also carried out; in the subsequent aerobic section of the oxygen deficiency, the conventional organic matter aerobic degradation and aerobic nitrification occur. The device can be used for advantageously culturing the fermentation type phosphorus-accumulating bacteria which the conventional biological nitrogen removal system does not have, and is coupled with other conventional strains to synergistically and efficiently carry out biological nitrogen and phosphorus removal. The operation process is not influenced by seasonal water temperature change.
The utility model discloses rural sewage integration treatment facility's of fermentation intensive operation process refined control saves the power consumption.
Specifically, through setting up suitable auxiliary control device and space, for example anaerobic fermentation district, anoxic zone, aerobic zone, the interior backward flow proportional control of mixed liquid, means such as sedimentation tank mud all different mud positions of arranging, aeration zone air regulation diamond valve combine actual water inflow and the undulant condition of quality of water, season temperature condition, through online instrument and predetermined back feed and feedforward control program to the operation process control that becomes more meticulous, under the prerequisite that stable water is up to standard, accomplish that the energy consumption is the most economized, reach the purpose of the management that becomes more meticulous.
The utility model discloses rural sewage integration treatment facility of fermentation intensification type passes through the modularization and constitutes the preparation, and the scene is spliced to future other advanced treatment processes of addable, realization device can extend the extension. Through adopting the parallelly connected equipment operation of standardized module concatenation, after the standard modularization preparation in the mill, the container freight arrives the scene, and electric welding is fixed or the fix with rivet after each component unit concatenation, and the overall arrangement is compact manages conveniently. The user needs to follow the high-demand effluent quality of water, the utility model discloses rural sewage integration treatment facility of fermentation enhanced type can install advanced treatment unit such as membrane grid, milipore filter, reverse osmosis membrane additional in device steel casing, realizes going out the high-quality retrieval and utilization of water. The problems of limited installation area and unsmooth running system connection caused by product upgrading in future of the device are avoided.
The utility model discloses rural sewage integration treatment facility of fermentation intensification type realizes the operation of saving, unmanned on duty. The utility model discloses rural sewage integration treatment facility of fermentation enhanced type can on-the-spot artifical manual operation, on-the-spot full automatic operation and long-range full automatic control remote control operation. The field operation condition can be transmitted to an operation management department mobile phone APP through a wireless transmitting device, a big data system is formed after software analysis and arrangement, and operation condition data statistics, analysis, judgment and remote control operation are conveniently carried out by the management department. The management problems that a conventional processing device consumes a large amount of manpower and material resources and the like are avoided.
It should be noted that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the efficacy and the achievable purpose of the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
The present invention has been described in detail with reference to the embodiments shown in the drawings, and those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details of the embodiments should not be construed as limitations of the present invention, which are intended to be limited only by the scope of the appended claims.
Claims (5)
1. The utility model provides a rural sewage integration treatment facility of fermentation intensive type which characterized in that, includes anaerobic tank group, oxygen deficiency pond group, good oxygen pond group and the sedimentation tank of establishing ties in order, the anaerobic tank group the oxygen deficiency pond group, good oxygen pond group with the sedimentation tank is integrated to be installed together, the anaerobic tank group is connected with first inlet tube, the oxygen deficiency pond group is connected with the second inlet tube, the mixed liquid has been held to the holding in the good oxygen pond group, the good oxygen pond group with be connected with the back flow that is used for returning the row mixed liquid between the oxygen deficiency pond group, the mud has been held in the sedimentation tank, the sedimentation tank with be connected with between the anaerobic tank group and be used for returning the row first pipe of returning the mud, the sedimentation tank with be connected with between the oxygen deficiency pond and be used for returning the.
2. The integrated fermentation-enhanced rural sewage treatment equipment according to claim 1, further comprising a controller and a monitoring device for acquiring the water quality of sewage to be treated, wherein the monitoring device is in signal connection with the controller, a first electric pump is installed on the first water inlet pipe, a second electric pump is installed on the second water inlet pipe, a third electric pump is installed on the first pipe for returning, a fourth electric pump is installed on the second pipe for returning, and the first electric pump, the second electric pump, the third electric pump and the fourth electric pump are in signal connection with the controller respectively.
3. The integrated fermentation-enhanced rural sewage treatment equipment according to claim 2, wherein the monitoring device comprises a temperature monitoring unit for acquiring the temperature of the sewage to be measured.
4. The integrated fermentation-enhanced rural sewage treatment equipment according to claim 3, wherein the temperature monitoring unit is an ORP meter.
5. The integrated fermentation-enhanced rural sewage treatment equipment according to claim 1, wherein the anaerobic tank group comprises at least two first tank bodies which are connected in series.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109912130A (en) * | 2019-04-04 | 2019-06-21 | 上海市市政规划设计研究院有限公司 | Sewerage integrated, modularized processing equipment and sewage water treatment method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109912130A (en) * | 2019-04-04 | 2019-06-21 | 上海市市政规划设计研究院有限公司 | Sewerage integrated, modularized processing equipment and sewage water treatment method |
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