CN113371953A - Comprehensive sewage treatment and recycling method for expressway service area - Google Patents
Comprehensive sewage treatment and recycling method for expressway service area Download PDFInfo
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- C02F9/00—Multistage treatment of water, waste water or sewage
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C02F2101/00—Nature of the contaminant
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
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- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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Abstract
The invention discloses a comprehensive sewage treatment and recycling method for a highway service area, which comprises the following steps: sewage pretreatment, homogenizing and stirring treatment, biological treatment, precipitation treatment and disinfection and discharge; the invention carries out pretreatment on the sewage, thereby preliminarily purifying the sewage, recycling the sludge, carrying out oxygenation and stirring on the sewage, having a certain degradation function on organic matters in the sewage, carrying out biological treatment on the sewage, thereby effectively removing organic matters and ammonia nitrogen in the sewage, stripping a biological membrane and suspended sludge in the sewage by a membrane bioreactor, thereby improving the overall removal efficiency and effect of pollutants in the sewage, and leading the dosing amount to be accurately controlled by matching the disinfection device and the liquid level sensor.
Description
Technical Field
The invention relates to the technical field of sewage treatment processes, in particular to a comprehensive sewage treatment and recycling method for a highway service area.
Background
The highway service area is generally provided with public toilets, supermarkets, restaurants, car washing yards, maintenance stations and gas stations, so that sewage in the highway service area can be divided into sewage discharged by public toilets and toilets, sewage discharged by kitchens and restaurants and sewage discharged by gas stations and vehicles by flushing, if the sewage is treated and does not reach the standard, the sewage can seriously pollute a sewage receptor, so that the original functions of the receptor are influenced, and as the sewage contains a large amount of pathogenic microorganisms, parasitic ova and bred mosquitoes and flies, the spread of infectious diseases can be caused, the health of people is threatened, and in addition, the sewage is discharged into a water body, the social and economic values of the water body can be influenced, so that the sewage in the highway service area can be treated to reach the standard and is difficult to treat;
compared with the common domestic sewage, the sewage of the expressway service area is characterized in that pollution factors in the sewage are mainly ammonia nitrogen and are influenced by changes of pedestrian flow and vehicle flow, the quality of the sewage of the service area fluctuates obviously, the core problem of the existing expressway service area sewage treatment lies in the control of ammonia nitrogen pollution, most of the existing sewage treatment methods are rough in process, not scientific and rigorous, large in energy consumption, high in treatment cost and inaccurate in control of water quality and water quantity, so that the quality of effluent is unstable, the treated water cannot reach the discharge standard, the treated water cannot be effectively recycled, the social and economic values are low, and the comprehensive sewage treatment and recycling method is not worthy of wide popularization and use.
Disclosure of Invention
In view of the above problems, the present invention is directed to a method for treating and recycling comprehensive sewage in a service area of an expressway.
In order to achieve the purpose of the invention, the invention is realized by the following technical scheme: a comprehensive sewage treatment and recycling method for a highway service area comprises the following steps:
the method comprises the following steps: pretreatment of sewage
Firstly, sewage from different sources in a service area of a highway is converged and guided into a mixing tank through a pipe canal to form comprehensive sewage, then large-volume garbage and sundries in the comprehensive sewage are intercepted through an artificial grating, then the comprehensive sewage is guided into a septic tank for pretreatment, suspended matters and sludge in sewage are removed, and then the pretreated comprehensive sewage is guided into a regulating tank;
step two: homogenizing and stirring treatment
According to the first step, after the comprehensive sewage is led into the regulating tank, the comprehensive sewage is stirred to enable the sewage quantity and water to be regulated and homogenized, then the regulating tank is oxygenated by utilizing a return fan and an air pipe to enable the sewage to be aerated for a long time to realize aerobic digestion, and then the comprehensive sewage after the aerobic digestion is led into a first biological treatment tank;
step three: biological treatment
According to the second step, firstly hydrolyzing macromolecular organic matters in the comprehensive sewage into micromolecular organic matters through the first biological treatment tank, then introducing the comprehensive sewage into the second biological treatment tank, then performing biochemical degradation and adsorption on the comprehensive sewage through the second biological treatment tank, then degrading ammonia nitrogen in the comprehensive sewage, and finally introducing the comprehensive sewage into the sedimentation tank;
step four: precipitation treatment
According to the third step, after the comprehensive sewage is led into the sedimentation tank, firstly, the biological membrane and the suspended sludge in the sewage are peeled off by the membrane bioreactor, and then the peeled biological membrane and the peeled suspended sludge are removed by a solid-liquid separation method, so that semi-treated sewage is obtained and led into the disinfection tank;
step five: disinfecting discharge
According to the fourth step, firstly, a disinfection device in the disinfection tank is used for disinfecting and sterilizing the semi-treated sewage led out of the sedimentation tank, the semi-treated sewage is uniformly stirred and then is precipitated for 8 to 12 hours to obtain recycled water, then the recycled water is led into a reuse water tank, and finally the recycled water in the reuse water tank is used for fire fighting, toilet flushing, greening irrigation and ground flushing according to actual use requirements.
The further improvement lies in that: in the first step, the pretreatment of the comprehensive sewage in the septic tank specifically comprises the following steps: separating and precipitating the comprehensive sewage to ensure that sludge and suspended matters in the comprehensive sewage are precipitated at the bottom of the septic tank and are converted into precipitated sludge, the upper layer sewage flows out, and then the precipitated sludge is subjected to anaerobic fermentation decomposition treatment.
The further improvement lies in that: sludge precipitated in the septic tank is periodically cleaned and transported after being decomposed by anaerobic fermentation, and is buried or used as fertilizer, and large-volume garbage and sundries intercepted by the artificial grating are periodically collected and transported to a garbage station.
The further improvement lies in that: and in the third step, the first biological treatment tank is filled with the high-efficiency biological filler, the comprehensive sewage is firstly mixed and stirred in the first biological treatment tank, the high-efficiency biological filler in the tank is used as a bacterial carrier, indissolvable organic matters in the comprehensive sewage are converted into soluble organic matters by means of facultative microorganisms, and the macromolecular organic matters are hydrolyzed into micromolecular organic matters.
The further improvement lies in that: in the third step, the second biological treatment tank is divided into a front section and a rear section and is respectively filled with elastic three-dimensional filler and nitrobacteria, the front section of the second biological treatment tank is subjected to biochemical degradation and adsorption under the joint participation of microbial communities of different species attached to the filler under the action of high organic load to remove organic substances in the comprehensive sewage, and the rear section of the second biological treatment tank is subjected to degradation of ammonia nitrogen in the sewage under the action of sufficient oxygen amount through the action of nitrobacteria under the action of low organic load to reduce the chemical oxygen demand value in the sewage.
The further improvement lies in that: in the fourth step, a scum baffle is preset in the sedimentation tank, and when the comprehensive sewage is subjected to solid-liquid separation, the floating sludge is intercepted by the scum baffle in the sedimentation tank, and the sludge is pumped back to the septic tank at regular time by a sludge pump.
The further improvement lies in that: and in the fifth step, a liquid level sensor electrically connected with the disinfection device is arranged in the disinfection tank, the disinfection device senses the water quantity in the disinfection tank through the liquid level sensor and adjusts the corresponding medicine adding quantity, and the disinfection sheet is selected from one or more of a dichloro disinfection sheet, a trichloro disinfection sheet and a calcium hypochlorite disinfection sheet.
The further improvement lies in that: mix pond, septic tank, equalizing basin, first biological treatment pond, second biological treatment pond, sedimentation tank and disinfection pond and all control through PLC automatic control cabinet, PLC automatic control cabinet has the computer customer end through high in the clouds server wireless connection and collects and remove the end.
The invention has the beneficial effects that: the invention separates and deposits the sewage and carries on the preconditioning of anaerobic fermentation decomposition treatment to the deposition mud, thus make the sewage get the preliminary purification, and make the mud get the reuse, it is comparatively environment-friendly, through carrying on the oxygen charging to stir the sewage, avoid the suspended particle in the sewage from depositing and smelling for a long time, play a certain degradation function to the organic matter in the sewage, through carrying on the biological treatment to the sewage, thus make organic matter and ammonia nitrogen in the sewage get the effective removal, peel off biomembrane and suspended mud in the sewage through the membrane bioreactor, thus has raised the whole removal efficiency and effect of the pollutant in the sewage, through cooperating with the liquid level sensor of the sterilizing unit, make the medicine dosage get the accurate control, it is more accurate to grasp the water quality and water yield compared with the traditional sewage treatment way, the water quality goes out of a steady, the effluent is not up to standard, and the technological process is scientific and rigorous, the cost is low, the treated sewage can be effectively recycled, and the social and economic values are high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow chart of the method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
Referring to fig. 1, the embodiment provides a comprehensive sewage treatment and recycling method for a highway service area, comprising the following steps:
the method comprises the following steps: pretreatment of sewage
Earlier assemble the leading-in pond that mixes through the sewage of different sources in the canal with the highway service area, form and synthesize sewage, bulky rubbish and debris in the rethread artificial grating interception is synthesized sewage, will synthesize the leading-in septic tank of sewage and carry out the preliminary treatment after that to remove suspended solid and mud in the sewage, then the leading-in equalizing basin of comprehensive sewage after with the preliminary treatment, wherein synthesize the preliminary treatment of sewage specifically be in the septic tank: the comprehensive sewage is separated and precipitated, so that sludge and suspended matters in the comprehensive sewage are precipitated to the bottom of a septic tank and are converted into precipitated sludge, the upper layer sewage flows out, then the precipitated sludge is subjected to anaerobic fermentation decomposition treatment, the precipitated sludge in the septic tank is periodically cleaned and transported outside and is buried or used as fertilizer, large-volume garbage and sundries intercepted by an artificial grating are periodically collected and transported to a garbage station, the large-volume garbage and sundries in the sewage are intercepted, so that the sewage is convenient for subsequent purification treatment, and the sewage is separated and precipitated and is subjected to pretreatment of anaerobic fermentation decomposition treatment, so that the sewage is preliminarily purified, the sludge is recycled, the purification efficiency is improved, and the environment is protected;
step two: homogenizing and stirring treatment
According to the first step, after the comprehensive sewage is led into the regulating tank, the comprehensive sewage is firstly stirred to enable the sewage quantity and water to be regulated and homogenized, then a backflow fan and an air pipe are used for oxygenating the regulating tank, the sewage is aerated for a long time, aerobic digestion is realized, then the comprehensive sewage after the aerobic digestion is led into a first biological treatment tank, the sewage is oxygenated and stirred to enable the water quantity and the water quality to be regulated and homogenized, odor caused by long-time sedimentation of suspended particles in the sewage is avoided, and a certain degradation function is performed on organic matters in the sewage;
step three: biological treatment
According to the second step, firstly hydrolyzing macromolecular organic matters in the comprehensive sewage into micromolecular organic matters through a first biological treatment tank, then guiding the comprehensive sewage into a second biological treatment tank, then performing biochemical degradation and adsorption on the comprehensive sewage through the second biological treatment tank, then degrading ammonia nitrogen in the comprehensive sewage, and finally guiding the comprehensive sewage into a sedimentation tank, wherein the first biological treatment tank is filled with high-efficiency biological fillers, the comprehensive sewage is firstly mixed and stirred in the first biological treatment tank, then the high-efficiency biological fillers in the tank are used as bacterial carriers, organic matters which are difficult to dissolve in the comprehensive sewage are converted into soluble organic matters by facultative microorganisms, and the macromolecular organic matters are hydrolyzed into the micromolecular organic matters, the second biological treatment tank is divided into a front section and a rear section and respectively filled with elastic three-dimensional fillers and nitrobacteria, and the front section of the second biological treatment tank is under the action of high organic load, organic substances in the comprehensive sewage are removed through the biochemical degradation and adsorption action of microbial communities of different species attached to the filler under the joint participation, and the ammonia nitrogen in the sewage is degraded under the action of nitrobacteria under the condition of sufficient oxygen amount at the rear section of the second biological treatment tank under the action of low organic load, so that the chemical oxygen demand value in the sewage is reduced, the organic substances and the ammonia nitrogen in the sewage are effectively removed, and the sewage purification treatment effect is improved;
step four: precipitation treatment
According to the third step, after the comprehensive sewage is led into the sedimentation tank, firstly, a biological membrane and suspended sludge in the sewage are peeled off through a membrane bioreactor, then, the peeled biological membrane and suspended sludge are removed through a solid-liquid separation method, semi-processed sewage is obtained and led into a disinfection tank, a scum baffle is preset in the sedimentation tank, when the comprehensive sewage is subjected to solid-liquid separation, the suspended sludge is intercepted through the scum baffle in the sedimentation tank, the sludge is periodically pumped back to the septic tank through a sludge pump, and the biological membrane and the suspended sludge in the sewage are peeled off through the membrane bioreactor, so that the overall removal efficiency and effect of pollutants in the sewage are improved, and the quality of effluent is ensured;
step five: disinfecting discharge
According to the fourth step, firstly adding a disinfection sheet to the semi-treated sewage led out from the sedimentation tank by a disinfection device in the disinfection tank for disinfection and sterilization, uniformly stirring and then precipitating for 8 hours to obtain recovered water, then leading the recovered water into a reuse water tank, and finally using the reuse water in the reuse water tank for fire control, toilet flushing, greening irrigation and ground flushing according to actual use requirements, wherein a liquid level sensor electrically connected with the disinfection device is arranged in the disinfection tank, the disinfection device senses the water quantity in the disinfection tank through the liquid level sensor and adjusts the corresponding medicine adding quantity, the disinfection sheet is selected from a dichloro disinfection sheet, and the disinfection treatment and precipitation are carried out on the semi-treated sewage, so that the sewage is further treated and more conforms to the discharge standard, and the medicine adding quantity of the disinfection sheet in the disinfection tank is convenient to increase according to the increase of the water quantity through the matching use of the disinfection device and the liquid level sensor, the medicine adding amount is accurately controlled, the disinfection effect is ensured, and the medicine adding amount is also saved.
Mix pond, septic tank, equalizing basin, first biological treatment pond, second biological treatment pond, sedimentation tank and disinfection pond and all control through PLC automatic control cabinet, PLC automatic control cabinet has the computer customer end through high in the clouds server wireless connection and collects and remove the end, and the user remote monitoring of being convenient for is controlled, and degree of automation is high, is convenient for in time discover the field device trouble simultaneously.
Example two
Referring to fig. 1, the embodiment provides a comprehensive sewage treatment and recycling method for a highway service area, comprising the following steps:
the method comprises the following steps: pretreatment of sewage
Earlier assemble the leading-in pond that mixes through the sewage of different sources in the canal with the highway service area, form and synthesize sewage, bulky rubbish and debris in the rethread artificial grating interception is synthesized sewage, will synthesize the leading-in septic tank of sewage and carry out the preliminary treatment after that to remove suspended solid and mud in the sewage, then the leading-in equalizing basin of comprehensive sewage after with the preliminary treatment, wherein synthesize the preliminary treatment of sewage specifically be in the septic tank: the comprehensive sewage is separated and precipitated, so that sludge and suspended matters in the comprehensive sewage are precipitated to the bottom of a septic tank and are converted into precipitated sludge, the upper layer sewage flows out, then the precipitated sludge is subjected to anaerobic fermentation decomposition treatment, the precipitated sludge in the septic tank is periodically cleaned and transported outside and is buried or used as fertilizer, large-volume garbage and sundries intercepted by an artificial grating are periodically collected and transported to a garbage station, the large-volume garbage and sundries in the sewage are intercepted, so that the sewage is convenient for subsequent purification treatment, and the sewage is separated and precipitated and is subjected to pretreatment of anaerobic fermentation decomposition treatment, so that the sewage is preliminarily purified, the sludge is recycled, the purification efficiency is improved, and the environment is protected;
step two: homogenizing and stirring treatment
According to the first step, after the comprehensive sewage is led into the regulating tank, the comprehensive sewage is firstly stirred to enable the sewage quantity and water to be regulated and homogenized, then a backflow fan and an air pipe are used for oxygenating the regulating tank, the sewage is aerated for a long time, aerobic digestion is realized, then the comprehensive sewage after the aerobic digestion is led into a first biological treatment tank, the sewage is oxygenated and stirred to enable the water quantity and the water quality to be regulated and homogenized, odor caused by long-time sedimentation of suspended particles in the sewage is avoided, and a certain degradation function is performed on organic matters in the sewage;
step three: biological treatment
According to the second step, firstly hydrolyzing macromolecular organic matters in the comprehensive sewage into micromolecular organic matters through a first biological treatment tank, then guiding the comprehensive sewage into a second biological treatment tank, then performing biochemical degradation and adsorption on the comprehensive sewage through the second biological treatment tank, then degrading ammonia nitrogen in the comprehensive sewage, and finally guiding the comprehensive sewage into a sedimentation tank, wherein the first biological treatment tank is filled with high-efficiency biological fillers, the comprehensive sewage is firstly mixed and stirred in the first biological treatment tank, then the high-efficiency biological fillers in the tank are used as bacterial carriers, organic matters which are difficult to dissolve in the comprehensive sewage are converted into soluble organic matters by facultative microorganisms, and the macromolecular organic matters are hydrolyzed into the micromolecular organic matters, the second biological treatment tank is divided into a front section and a rear section and respectively filled with elastic three-dimensional fillers and nitrobacteria, and the front section of the second biological treatment tank is under the action of high organic load, organic substances in the comprehensive sewage are removed through the biochemical degradation and adsorption action of microbial communities of different species attached to the filler under the joint participation, and the ammonia nitrogen in the sewage is degraded under the action of nitrobacteria under the condition of sufficient oxygen amount at the rear section of the second biological treatment tank under the action of low organic load, so that the chemical oxygen demand value in the sewage is reduced, the organic substances and the ammonia nitrogen in the sewage are effectively removed, and the sewage purification treatment effect is improved;
step four: precipitation treatment
According to the third step, after the comprehensive sewage is led into the sedimentation tank, firstly, a biological membrane and suspended sludge in the sewage are peeled off through a membrane bioreactor, then, the peeled biological membrane and suspended sludge are removed through a solid-liquid separation method, semi-processed sewage is obtained and led into a disinfection tank, a scum baffle is preset in the sedimentation tank, when the comprehensive sewage is subjected to solid-liquid separation, the suspended sludge is intercepted through the scum baffle in the sedimentation tank, the sludge is periodically pumped back to the septic tank through a sludge pump, and the biological membrane and the suspended sludge in the sewage are peeled off through the membrane bioreactor, so that the overall removal efficiency and effect of pollutants in the sewage are improved, and the quality of effluent is ensured;
step five: disinfecting discharge
According to the fourth step, firstly adding a disinfection sheet to the semi-treated sewage led out from the sedimentation tank by a disinfection device in the disinfection tank for disinfection and sterilization, uniformly stirring and then precipitating for 10 hours to obtain recovered water, then leading the recovered water into a reuse water tank, and finally using the reuse water in the reuse water tank for fire control, toilet flushing, greening irrigation and ground flushing according to actual use requirements, wherein a liquid level sensor electrically connected with the disinfection device is arranged in the disinfection tank, the disinfection device senses the water quantity in the disinfection tank through the liquid level sensor and adjusts the corresponding medicine adding quantity, the disinfection sheet is selected from a trichloro disinfection sheet, and the disinfection treatment and precipitation are carried out on the semi-treated sewage, so that the sewage is further treated and more conforms to the discharge standard, and the medicine adding quantity of the disinfection sheet in the disinfection tank is convenient to increase according to the increase of the water quantity through the matched use of the disinfection device and the liquid level sensor, the medicine adding amount is accurately controlled, the disinfection effect is ensured, and the medicine adding amount is also saved.
Mix pond, septic tank, equalizing basin, first biological treatment pond, second biological treatment pond, sedimentation tank and disinfection pond and all control through PLC automatic control cabinet, PLC automatic control cabinet has the computer customer end through high in the clouds server wireless connection and collects and remove the end, and the user remote monitoring of being convenient for is controlled, and degree of automation is high, is convenient for in time discover the field device trouble simultaneously.
EXAMPLE III
Referring to fig. 1, the embodiment provides a comprehensive sewage treatment and recycling method for a highway service area, comprising the following steps:
the method comprises the following steps: pretreatment of sewage
Earlier assemble the leading-in pond that mixes through the sewage of different sources in the canal with the highway service area, form and synthesize sewage, bulky rubbish and debris in the rethread artificial grating interception is synthesized sewage, will synthesize the leading-in septic tank of sewage and carry out the preliminary treatment after that to remove suspended solid and mud in the sewage, then the leading-in equalizing basin of comprehensive sewage after with the preliminary treatment, wherein synthesize the preliminary treatment of sewage specifically be in the septic tank: the comprehensive sewage is separated and precipitated, so that sludge and suspended matters in the comprehensive sewage are precipitated to the bottom of a septic tank and are converted into precipitated sludge, the upper layer sewage flows out, then the precipitated sludge is subjected to anaerobic fermentation decomposition treatment, the precipitated sludge in the septic tank is periodically cleaned and transported outside and is buried or used as fertilizer, large-volume garbage and sundries intercepted by an artificial grating are periodically collected and transported to a garbage station, the large-volume garbage and sundries in the sewage are intercepted, so that the sewage is convenient for subsequent purification treatment, and the sewage is separated and precipitated and is subjected to pretreatment of anaerobic fermentation decomposition treatment, so that the sewage is preliminarily purified, the sludge is recycled, the purification efficiency is improved, and the environment is protected;
step two: homogenizing and stirring treatment
According to the first step, after the comprehensive sewage is led into the regulating tank, the comprehensive sewage is firstly stirred to enable the sewage quantity and water to be regulated and homogenized, then a backflow fan and an air pipe are used for oxygenating the regulating tank, the sewage is aerated for a long time, aerobic digestion is realized, then the comprehensive sewage after the aerobic digestion is led into a first biological treatment tank, the sewage is oxygenated and stirred to enable the water quantity and the water quality to be regulated and homogenized, odor caused by long-time sedimentation of suspended particles in the sewage is avoided, and a certain degradation function is performed on organic matters in the sewage;
step three: biological treatment
According to the second step, firstly hydrolyzing macromolecular organic matters in the comprehensive sewage into micromolecular organic matters through a first biological treatment tank, then guiding the comprehensive sewage into a second biological treatment tank, then performing biochemical degradation and adsorption on the comprehensive sewage through the second biological treatment tank, then degrading ammonia nitrogen in the comprehensive sewage, and finally guiding the comprehensive sewage into a sedimentation tank, wherein the first biological treatment tank is filled with high-efficiency biological fillers, the comprehensive sewage is firstly mixed and stirred in the first biological treatment tank, then the high-efficiency biological fillers in the tank are used as bacterial carriers, organic matters which are difficult to dissolve in the comprehensive sewage are converted into soluble organic matters by facultative microorganisms, and the macromolecular organic matters are hydrolyzed into the micromolecular organic matters, the second biological treatment tank is divided into a front section and a rear section and respectively filled with elastic three-dimensional fillers and nitrobacteria, and the front section of the second biological treatment tank is under the action of high organic load, organic substances in the comprehensive sewage are removed through the biochemical degradation and adsorption action of microbial communities of different species attached to the filler under the joint participation, and the ammonia nitrogen in the sewage is degraded under the action of nitrobacteria under the condition of sufficient oxygen amount at the rear section of the second biological treatment tank under the action of low organic load, so that the chemical oxygen demand value in the sewage is reduced, the organic substances and the ammonia nitrogen in the sewage are effectively removed, and the sewage purification treatment effect is improved;
step four: precipitation treatment
According to the third step, after the comprehensive sewage is led into the sedimentation tank, firstly, a biological membrane and suspended sludge in the sewage are peeled off through a membrane bioreactor, then, the peeled biological membrane and suspended sludge are removed through a solid-liquid separation method, semi-processed sewage is obtained and led into a disinfection tank, a scum baffle is preset in the sedimentation tank, when the comprehensive sewage is subjected to solid-liquid separation, the suspended sludge is intercepted through the scum baffle in the sedimentation tank, the sludge is periodically pumped back to the septic tank through a sludge pump, and the biological membrane and the suspended sludge in the sewage are peeled off through the membrane bioreactor, so that the overall removal efficiency and effect of pollutants in the sewage are improved, and the quality of effluent is ensured;
step five: disinfecting discharge
According to the fourth step, firstly adding a disinfection sheet to the semi-treated sewage led out from the sedimentation tank by a disinfection device in the disinfection tank for disinfection and sterilization, uniformly stirring and then precipitating for 12 hours to obtain recovered water, then leading the recovered water into a reuse water tank, and finally using the reuse water in the reuse water tank for fire control, toilet flushing, greening irrigation and ground flushing according to actual use requirements, wherein a liquid level sensor electrically connected with the disinfection device is arranged in the disinfection tank, the disinfection device senses the water quantity in the disinfection tank through the liquid level sensor and adjusts the corresponding medicine adding quantity, the disinfection sheet is selected from a calcium hypochlorite disinfection sheet, and the disinfection treatment and precipitation are carried out on the semi-treated sewage, so that the sewage is further treated and more conforms to the discharge standard, and the medicine adding quantity of the disinfection sheet in the disinfection tank is convenient to increase according to the increase of the water quantity through the matched use of the disinfection device and the liquid level sensor, the medicine adding amount is accurately controlled, the disinfection effect is ensured, and the medicine adding amount is also saved.
Mix pond, septic tank, equalizing basin, first biological treatment pond, second biological treatment pond, sedimentation tank and disinfection pond and all control through PLC automatic control cabinet, PLC automatic control cabinet has the computer customer end through high in the clouds server wireless connection and collects and remove the end, and the user remote monitoring of being convenient for is controlled, and degree of automation is high, is convenient for in time discover the field device trouble simultaneously.
The method is used for carrying out sewage treatment and ammonia nitrogen concentration detection in different time periods of the expressway service area, and the detection results are shown in the following table 1:
TABLE 1
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A comprehensive sewage treatment and recycling method for a highway service area is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: pretreatment of sewage
Firstly, sewage from different sources in a service area of a highway is converged and guided into a mixing tank through a pipe canal to form comprehensive sewage, then large-volume garbage and sundries in the comprehensive sewage are intercepted through an artificial grating, then the comprehensive sewage is guided into a septic tank for pretreatment, suspended matters and sludge in sewage are removed, and then the pretreated comprehensive sewage is guided into a regulating tank;
step two: homogenizing and stirring treatment
According to the first step, after the comprehensive sewage is led into the regulating tank, the comprehensive sewage is stirred to enable the sewage quantity and water to be regulated and homogenized, then the regulating tank is oxygenated by utilizing a return fan and an air pipe to enable the sewage to be aerated for a long time to realize aerobic digestion, and then the comprehensive sewage after the aerobic digestion is led into a first biological treatment tank;
step three: biological treatment
According to the second step, firstly hydrolyzing macromolecular organic matters in the comprehensive sewage into micromolecular organic matters through the first biological treatment tank, then introducing the comprehensive sewage into the second biological treatment tank, then performing biochemical degradation and adsorption on the comprehensive sewage through the second biological treatment tank, then degrading ammonia nitrogen in the comprehensive sewage, and finally introducing the comprehensive sewage into the sedimentation tank;
step four: precipitation treatment
According to the third step, after the comprehensive sewage is led into the sedimentation tank, firstly, the biological membrane and the suspended sludge in the sewage are peeled off by the membrane bioreactor, and then the peeled biological membrane and the peeled suspended sludge are removed by a solid-liquid separation method, so that semi-treated sewage is obtained and led into the disinfection tank;
step five: disinfecting discharge
According to the fourth step, firstly, a disinfection device in the disinfection tank is used for disinfecting and sterilizing the semi-treated sewage led out of the sedimentation tank, the semi-treated sewage is uniformly stirred and then is precipitated for 8 to 12 hours to obtain recycled water, then the recycled water is led into a reuse water tank, and finally the recycled water in the reuse water tank is used for fire fighting, toilet flushing, greening irrigation and ground flushing according to actual use requirements.
2. The comprehensive sewage treatment and reuse method for the expressway service area according to claim 1, wherein the comprehensive sewage treatment and reuse method comprises the following steps: in the first step, the pretreatment of the comprehensive sewage in the septic tank specifically comprises the following steps: separating and precipitating the comprehensive sewage to ensure that sludge and suspended matters in the comprehensive sewage are precipitated at the bottom of the septic tank and are converted into precipitated sludge, the upper layer sewage flows out, and then the precipitated sludge is subjected to anaerobic fermentation decomposition treatment.
3. The comprehensive sewage treatment and reuse method for the expressway service area according to claim 2, wherein the comprehensive sewage treatment and reuse method comprises the following steps: sludge precipitated in the septic tank is periodically cleaned and transported after being decomposed by anaerobic fermentation, and is buried or used as fertilizer, and large-volume garbage and sundries intercepted by the artificial grating are periodically collected and transported to a garbage station.
4. The comprehensive sewage treatment and reuse method for the expressway service area according to claim 1, wherein the comprehensive sewage treatment and reuse method comprises the following steps: and in the third step, the first biological treatment tank is filled with the high-efficiency biological filler, the comprehensive sewage is firstly mixed and stirred in the first biological treatment tank, the high-efficiency biological filler in the tank is used as a bacterial carrier, indissolvable organic matters in the comprehensive sewage are converted into soluble organic matters by means of facultative microorganisms, and the macromolecular organic matters are hydrolyzed into micromolecular organic matters.
5. The comprehensive sewage treatment and reuse method for the expressway service area according to claim 1, wherein the comprehensive sewage treatment and reuse method comprises the following steps: in the third step, the second biological treatment tank is divided into a front section and a rear section and is respectively filled with elastic three-dimensional filler and nitrobacteria, the front section of the second biological treatment tank is subjected to biochemical degradation and adsorption under the joint participation of microbial communities of different species attached to the filler under the action of high organic load to remove organic substances in the comprehensive sewage, and the rear section of the second biological treatment tank is subjected to degradation of ammonia nitrogen in the sewage under the action of sufficient oxygen amount through the action of nitrobacteria under the action of low organic load to reduce the chemical oxygen demand value in the sewage.
6. The comprehensive sewage treatment and reuse method for the expressway service area according to claim 1, wherein the comprehensive sewage treatment and reuse method comprises the following steps: in the fourth step, a scum baffle is preset in the sedimentation tank, and when the comprehensive sewage is subjected to solid-liquid separation, the floating sludge is intercepted by the scum baffle in the sedimentation tank, and the sludge is pumped back to the septic tank at regular time by a sludge pump.
7. The comprehensive sewage treatment and reuse method for the expressway service area according to claim 1, wherein the comprehensive sewage treatment and reuse method comprises the following steps: and in the fifth step, a liquid level sensor electrically connected with the disinfection device is arranged in the disinfection tank, the disinfection device senses the water quantity in the disinfection tank through the liquid level sensor and adjusts the corresponding medicine adding quantity, and the disinfection sheet is selected from one or more of a dichloro disinfection sheet, a trichloro disinfection sheet and a calcium hypochlorite disinfection sheet.
8. The comprehensive sewage treatment and reuse method for the expressway service area according to claim 1, wherein the comprehensive sewage treatment and reuse method comprises the following steps: mix pond, septic tank, equalizing basin, first biological treatment pond, second biological treatment pond, sedimentation tank and disinfection pond and all control through PLC automatic control cabinet, PLC automatic control cabinet has the computer customer end through high in the clouds server wireless connection and collects and remove the end.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113860649A (en) * | 2021-10-24 | 2021-12-31 | 江苏核工业格林水处理有限责任公司 | Treatment equipment and treatment process for domestic sewage |
| CN113943086A (en) * | 2021-11-16 | 2022-01-18 | 山西交控生态环境股份有限公司 | Comprehensive sewage treatment and resource utilization method for expressway operation station area |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104973731A (en) * | 2015-06-29 | 2015-10-14 | 安徽省安庆市皖清环保科技有限公司 | Domestic wastewater treatment method |
| CN106045194A (en) * | 2016-05-31 | 2016-10-26 | 中钢集团天澄环保科技股份有限公司 | Device and method for sewage treatment of highway service area |
| CN206089346U (en) * | 2016-08-30 | 2017-04-12 | 江苏万邦达环保科技有限公司 | Domestic sewage treatment system |
-
2021
- 2021-07-27 CN CN202110851640.3A patent/CN113371953A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104973731A (en) * | 2015-06-29 | 2015-10-14 | 安徽省安庆市皖清环保科技有限公司 | Domestic wastewater treatment method |
| CN106045194A (en) * | 2016-05-31 | 2016-10-26 | 中钢集团天澄环保科技股份有限公司 | Device and method for sewage treatment of highway service area |
| CN206089346U (en) * | 2016-08-30 | 2017-04-12 | 江苏万邦达环保科技有限公司 | Domestic sewage treatment system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113860649A (en) * | 2021-10-24 | 2021-12-31 | 江苏核工业格林水处理有限责任公司 | Treatment equipment and treatment process for domestic sewage |
| CN113943086A (en) * | 2021-11-16 | 2022-01-18 | 山西交控生态环境股份有限公司 | Comprehensive sewage treatment and resource utilization method for expressway operation station area |
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Application publication date: 20210910 |