CN103601345B - A kind of Power-free domestic sewage treatment method - Google Patents
A kind of Power-free domestic sewage treatment method Download PDFInfo
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- CN103601345B CN103601345B CN201310637695.XA CN201310637695A CN103601345B CN 103601345 B CN103601345 B CN 103601345B CN 201310637695 A CN201310637695 A CN 201310637695A CN 103601345 B CN103601345 B CN 103601345B
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Abstract
The present invention provides a kind of Power-free domestic sewage treatment method, is hydrolyzed sanitary sewage and acidification including following operation: a.；B. described sanitary sewage is carried out methane fermentation；C. described sanitary sewage is carried out precipitation process；D. described sanitary sewage is made to obtain filtrate from lower by adsorbable and biodegradation at least one active bio membrane filtration organic；E. described filtrate is made to be fully contacted with oxygen；F. the filtrate after oxidative degradation is collected；Or row is collected again after carrying out disinfection the filtrate of oxidized degraded.A kind of sewage water treatment method that the present invention provides, the method of settlement treatment after the first hydrolysis acidification of employing, the waste residue organic pollution content after sedimentation is enable to reach the standard of discharge, and then reduce the solid impurity entering subsequent treatment, effectively prevent its occluding device in subsequent treatment, so that the unpowered sewage disposal purpose of the present invention is achieved.
Description
Technical field
The present invention relates to technical field of sewage, be specifically related to a kind of unpowered sewage water treatment method.
Background technology
Along with China's expanding economy and the quickening of urbanization process, water resources problems becomes increasingly conspicuous.Shortage of water resources and water pollute the key factor having become the economic development of restriction China.One of important polluter of sanitary sewage domestic water body pollution the most, has the features such as wide material sources, complicated component, content of organics is high, flowed fluctuation is big, uses conventional effluent purification method to be difficult to obtain preferable treatment effect.Use biomembrane to process sanitary sewage, there is the advantages such as organic pollutant degradation efficiency is high, the most widely applicable, mainly have biological rotating disk, bio-contact oxidation, bio-trickling filter, BAF, moving bed biological embrane method etc..But the method for above-mentioned existing treating sewage by using biological membrane generally exists, and mosquitos and flies multiplies, big to the fluctuation of dissimilar wastewater purifying efficiency, the rudimentary operation stability of efficiency is not enough, easily occur blocking to shorten the shortcomings such as cycle of operation.For preventing equipment from blocking, improving treatment effeciency, sewage pump etc. the most also can be used to improve effluent flow rate, operation energy consumption is high, and frequency of maintenance is high.
Summary of the invention
In view of this, the present invention disclose a kind of can effectively purifying domestic sewage, low energy consumption, anti-equipment blocking domestic sewage processing method.
The purpose of the present invention is achieved through the following technical solutions:
. a kind of Power-free domestic sewage treatment method, including following operation:
A. sanitary sewage is hydrolyzed and acidification, the macromolecule contaminant being insoluble in water in sewage is hydrolyzed to soluble small molecular material, produces organic acid simultaneously；
B. described sanitary sewage is carried out methane fermentation, be water and carbon dioxide by small-molecule substance therein and anaerobic digestion, produce methane gas simultaneously；
C. described sanitary sewage is carried out precipitation process, removes the insoluble impurities of precipitation；
D. make described sanitary sewage flow through adsorbable and aerobic/organic active biological film of anaerobic biodegradation from the bottom up, carry out biological activity filtering process, it is thus achieved that filtrate；
E. described filtrate is made to be fully contacted with oxygen, further oxidative degradation Organic substance therein；
F. the filtrate after oxidative degradation is collected；Or row is collected again after carrying out disinfection the filtrate of oxidized degraded.
First sanitary sewage is hydrolyzed by the present invention, insoluble macromole organic pollution in sewage is decomposed into the small organic molecule that can be dissolved in water, on the one hand can provide more efficient reaction substrate for follow-up methane fermentation, on the other hand also can prevent water-fast larger molecular organics occluding device in follow-up process.Acidification can reduce the pH value of sanitary sewage, makes sanitary sewage form an environment being more beneficial for methane fermentation；The organic acid that acidification produces simultaneously also can promote the dissolubility of organic matter of sewage.Methane fermentation can effectively remove a part of Organic substance in sanitary sewage, produces the methane biogas being available for producing, life utilizes simultaneously.Operation c removes the indissoluble material in sanitary sewage and the offscum of pre-treatment generation, waste residue etc. the most further, prevents it from entering subsequent step, thus keeps the unimpeded of equipment.Owing to be hydrolyzed sewage in advance and to be acidified, in sewage, organic pollutants contained by insoluble substance basically reaches discharge standard, therefore described offscum and waste residue all can be directly discharged in environment.The present invention uses the adsorbable and organic active biological film of biodegradation to filter sanitary sewage, most organic in sanitary sewage can be adsorbed and degrade in subsequently by it, and filtered filtrate can directly discharge or enter next treatment process and degrade without waiting as long for it.Owing to sanitary sewage processes through hydrolyze, be acidified, settle, methane fermentation etc., insoluble substance therein has been controlled in the degree that concentration is minimum, thus effectively prevents the damage of active biological film so that it is have longer service life.Owing to the present invention uses active biological film to replace common activated sludge, there is the advantages such as recovery, easy maintenance, and without using mud reclaimer that mud is reclaimed, it is achieved that energy-conservation effect.Additionally, the anxiety of occluding device also will not be there is as activated sludge in active biological film, it is achieved that the purpose of sewage disposal that the present invention is unpowered.
Described active biological film contains bioactive materials.
Described bioactive materials is 10 by extract of activated sludge and 1-5 part concentration of the part of 7-15 by weight5-107The Nocardia farcinica bacteria suspension of cfu/mL is made；Described extract of activated sludge is the activated sludge of dry weight 2-15 part by weight to be mixed merga pass rotary shaker with the clear water of 30-45 part and shakes 3-5min with the rotating speed of 100-300r/min and form.
Described activated sludge can be any one activated sludge for sewage disposal.In the present invention, bioactive substance selects extract of activated sludge to form with Nocardia farcinica bacteria suspension.Activated sludge exists that strain is abundant, active advantages of higher.Many synergism believing that this is activated sludge flora of studying, but mentioned microorganism flora is individually used for sewage disposal after activated sludge separates, its performance has bigger decline.And directly utilize activated sludge and carry out sewage disposal, then there is long processing period, mud recovery occluding device difficult, easy, the problems such as unpowered cannot be realized.Therefore the present invention uses and extract of activated sludge is attached to bioactive film, carries out sewage disposal.And inventor finds simultaneously, the bioactive film of the present invention has the biological activity strengthening extract of activated sludge.Nocardia farcinica (Noeardia · fareiniea), belong to the one of promise cassette Cordycepps, be widely present in nature.Inventor find, be affixed on the bioactive film of the present invention, it is possible to described extract of activated sludge synergism and strengthen the degradation capability to the fragrant type organic matter in bleaching and dyeing wastewater.Additionally, when the pH of waste water is adjusted to 3.8-4, the bioactive film of the present invention can play the degrading activity of maximum.
Described active biological film quantity is 3-5 block, and every piece of active bio membrane area is 0.5-1m2；In described operation d, sanitary sewage is to flow through active biological film with the speed of 0.1-0.5m/min, and its temperature is 40 DEG C-50 DEG C.
After sanitary sewage flows through active biological film, its most of Organic substance remained all is adsorbed by active biological film；The temperature of 40 DEG C-50 DEG C can farthest improve the degrading activity agent absorbability of active biological film, thus realizes continuous processing and not interrupt processing process.After active biological film of the present invention processes, the Organic substance in sewage
Described operation d is carried out in a biofilm filtration room, described active biological film is arranged in biofilm filtration room horizontal or vertically, being provided with the water inlet entered for sanitary sewage bottom biofiltration room, bottom active biological film, the vertical dimension away from water inlet is 0.5-1m；Active biological film is arranged over the outlet having supplied the filtrate filtered to flow away.
Described operation e is to carry out in an oxidizing chamber connected with described biofilm filtration room outlet；Being full of oxygen in described oxidizing chamber, its inwall is provided with the jog of surface undulation.
Jog can strengthen the turbulent flow of current in oxidizing chamber, thus promotes the oxyty of water body, promotes the organic further degraded of residual minim.
Described oxidizing chamber is that one end connects with biofilm filtration room, the other end is the coil of discharge outlet, and sewage flows 5-10 hour in coil.
In described operation a, hydrolysis refers to use aeration and aerobic activated sludge method that the macromole organic pollution of indissoluble in sanitary sewage is decomposed into water miscible small-molecule substance；Described acidifying refers to use anaerobic acid-production microorganism at full CO2Under the sealed environment of gas, at a temperature of 40-60 DEG C by carbohydrate-modifying in sanitary sewage for organic acid until sanitary sewage pH is down to 2.1-3.4.
Described sanitary sewage is carried out methane fermentation by described operation b refer to use methane fermentation microorganism at full CO2The sealed environment of gas, sanitary sewage is carried out under the conditions of 30-50 DEG C methane fermentation, every 10m3Sanitary sewage carry out methane fermentation process 36-50 hour.In the present invention, after hydrolysis, acidifying, methane fermentation process, organic pollutant removal rate reaches more than 25%.After flowing through active biological film, the Organic substance in sewage is reduced 44% again.After oxidized room processes, the current content of organics discharged is for being lowered more than 10% again.
During disease transmission, also the water that oxidizing chamber flows out can be caused disinfection in disinfection well.
A kind of sewage water treatment method that the present invention provides, the method of settlement treatment after the first hydrolysis acidification of employing, the waste residue organic pollution content after sedimentation is enable to reach the standard of discharge, and then reduce the solid impurity entering subsequent treatment, effectively prevent its occluding device in subsequent treatment, thus be achieved for the unpowered sewage disposal purpose of the present invention and provide material base.The present invention uses the active biological film securing the mud extract with degrading activity to carry out sewage disposal simultaneously, solve the problem that the recycling machine cleaning of activated sludge in prior art needs bigger power, only need to persistently input sewage just can realize continuous processing, without exogenous power, it is achieved motorless sewage disposal.Additionally, active biological film provided by the present invention has the function of the organic pollution in enrichment absorption effluent, thus improve the speed of sewage disposal, it is achieved the purpose of continuous processing.
Detailed description of the invention
The present invention is described in further detail below in conjunction with embodiment for the ease of it will be appreciated by those skilled in the art that:
Embodiment 1
Guangdong Huizhou city residential cell sewage floss hole, the major pollutants in its waste water have that kitchen is remaining, Excreta, washes etc., complicated component, content of organics is high, in alkalescence, and the day discharge water yield 30 tons, COD700-1800mg/L, former water BC is than 0.3-0.45, colourity 900-1900 times.The present embodiment provides a kind of Power-free domestic sewage treatment method processing above-mentioned sewage, including following operation:
A. sanitary sewage is hydrolyzed and acidification, the macromolecule contaminant being insoluble in water in sewage is hydrolyzed to soluble small molecular material, produces organic acid simultaneously；
B. described sanitary sewage is carried out methane fermentation, be water and carbon dioxide by small-molecule substance therein and anaerobic digestion, produce methane gas simultaneously；
C. described sanitary sewage is carried out precipitation process, removes the insoluble impurities of precipitation；
D. make described sanitary sewage from lower by the adsorbable and organic active bio membrane filtration of biodegradation, carry out biological activity filtering process, it is thus achieved that filtrate；
E. described filtrate is made to be fully contacted with oxygen, further oxidative degradation Organic substance therein；
F. the filtrate after oxidative degradation is collected；Or row is collected again after carrying out disinfection the filtrate of oxidized degraded.
Described active biological film contains bioactive materials.
Described bioactive materials is 10 by extract of activated sludge and 1-5 part concentration of the part of 7-15 by weight7The Nocardia farcinica bacteria suspension of cfu/mL is made；Described extract of activated sludge is that the activated sludge of dry weight 10 parts and the clear water of 40 parts by weight mixes merga pass rotary shaker and shake 4min with the rotating speed of 250r/min and form.
Described active biological film quantity is 4 pieces, and every piece of active bio membrane area is 0.7m2；In described operation d, sanitary sewage is to flow through active biological film with the speed of 0.2m/min, and its temperature is 45 DEG C.
Described operation d is carried out in a biofilm filtration room, described active biological film is horizontally placed in a sealing, anaerobic biofilm filtration room, being provided with the water inlet entered for sanitary sewage bottom biofiltration room, bottom active biological film, the vertical dimension away from water inlet is 0.7m；Active biological film is arranged over the outlet having supplied the filtrate filtered to flow away.
Described operation e is to carry out in an oxidizing chamber connected with described biofilm filtration room outlet；Being full of oxygen in described oxidizing chamber, its inwall is provided with the jog of surface undulation.
Concrete, described jog is to be arranged on the circular protrusion within oxidizing chamber and annular recess.
Described oxidizing chamber is that one end connects with biofilm filtration room, the other end is the coil of discharge outlet, and sewage flows 7 hours in coil.
In described operation a, hydrolysis refers to use aeration and aerobic activated sludge method that the macromole organic pollution of indissoluble in sanitary sewage is decomposed into water miscible small-molecule substance；Described acidifying refers to use anaerobic acid-production microorganism at full CO2Under the sealed environment of gas, at a temperature of 50 DEG C by carbohydrate-modifying in sanitary sewage for organic acid until sanitary sewage pH is down to 3.
Described sanitary sewage is carried out methane fermentation by described operation b refer to use methane fermentation microorganism at full CO2The sealed environment of gas, sanitary sewage is carried out under the conditions of 44 DEG C methane fermentation, every 10m3Sanitary sewage carry out methane fermentation process 40 hours.
Embodiment 2
Guangdong Huizhou city is mainly engaged in dining room Chinese meal culinary art business, and the major pollutants in its waste water have food debris, wash water etc..Waste component is complicated, and carbohydrate concentration is high, and pollutional load is high, and in faintly acid, the day discharge water yield 0.6 ton, COD900mg/L, former water BC, than 0.3-0.45, colourity 900-1900 times, lipid pollutant 400mg/L, have bigger rancidity.The present embodiment provides a kind of Power-free domestic sewage treatment method processing above-mentioned sewage, including following operation:
A. sanitary sewage is hydrolyzed and acidification, the macromolecule contaminant being insoluble in water in sewage is hydrolyzed to soluble small molecular material, produces organic acid simultaneously；
B. described sanitary sewage is carried out methane fermentation, be water and carbon dioxide by small-molecule substance therein and anaerobic digestion, produce methane gas simultaneously；Above-mentioned methane fermentation can be carried out in the bioreactor sealed, and can arrange gas mobile device and collect methane gas for burning in bioreactor；
C. described sanitary sewage is carried out precipitation process, removes the insoluble impurities of precipitation；
D. make described sanitary sewage from lower by adsorbable and 3 active biological films of aerobic bioreactor degradation of organic substances, carry out biological activity filtering process, it is thus achieved that filtrate；
E. described filtrate is made to be fully contacted with oxygen, further oxidative degradation Organic substance therein；
F. the filtrate after oxidative degradation is collected；Or row is collected again after carrying out disinfection the filtrate of oxidized degraded.
Described active biological film contains bioactive materials.
Described bioactive materials is 10 by extract of activated sludge and 1-5 part concentration of the part of 7-15 by weight7The Nocardia farcinica bacteria suspension of cfu/mL is made；Described extract of activated sludge is that the activated sludge of dry weight 2 parts and the clear water of 30-45 part by weight mixes merga pass rotary shaker and shake 3min with the rotating speed of 300r/min and form.
Described active biological film quantity is 3 pieces, and every piece of active bio membrane area is 0.5m2；In described operation d, sanitary sewage is to flow through active biological film with the speed of 0.5m/min, and its temperature is 40 DEG C.
Described operation d is carried out in a biofilm filtration room, and described active biological film is vertically provided in biofilm filtration room, is provided with the water inlet entered for sanitary sewage bottom biofiltration room, and bottom active biological film, the vertical dimension away from water inlet is 1m；Active biological film is arranged over the outlet having supplied the filtrate filtered to flow away.
Described operation e is to carry out in an oxidizing chamber connected with described biofilm filtration room outlet；Being full of oxygen in described oxidizing chamber, its inwall is provided with the jog of surface undulation.
Described oxidizing chamber is that one end connects with biofilm filtration room, the other end is the coil of discharge outlet, and sewage flows 5 hours in coil.
In described operation a, hydrolysis refers to use aeration and aerobic activated sludge method that the macromole organic pollution of indissoluble in sanitary sewage is decomposed into water miscible small-molecule substance；Described acidifying refers to use anaerobic acid-production microorganism at full CO2Under the sealed environment of gas, at a temperature of 60 DEG C by carbohydrate-modifying in sanitary sewage for organic acid until sanitary sewage pH is down to 2.1.
Described sanitary sewage is carried out methane fermentation by described operation b refer to use methane fermentation microorganism at full CO2The sealed environment of gas, sanitary sewage is carried out under the conditions of 50 DEG C methane fermentation, every 10m3Sanitary sewage carry out methane fermentation process 36 hours.
Embodiment 3
Senior middle school of Guangdong Huizhou city, the waste component of discharge every day is complicated, and pollutional load is high, and in alkalescence, the day discharge water yield 50 tons, COD1000mg/L, former water BC is than 0.3-0.45, colourity 900-1900 times.The present embodiment provides a kind of Power-free domestic sewage treatment method, including following operation:
A. sanitary sewage is hydrolyzed and acidification, the macromolecule contaminant being insoluble in water in sewage is hydrolyzed to soluble small molecular material, produces organic acid simultaneously；
B. described sanitary sewage is carried out methane fermentation, be water and carbon dioxide by small-molecule substance therein and anaerobic digestion, produce methane gas simultaneously；
C. described sanitary sewage is carried out precipitation process, removes the insoluble impurities of precipitation；
D. make described sanitary sewage from lower by adsorbable and 2 active biological films of aerobic bioreactor degradation of organic substances, carry out biological activity filtering process, it is thus achieved that filtrate；
E. described filtrate is made to be fully contacted with oxygen, further oxidative degradation Organic substance therein；
F. the filtrate after oxidative degradation is collected；Or row is collected again after carrying out disinfection the filtrate of oxidized degraded.
Described active biological film contains bioactive materials.
Described bioactive materials is 10 by extract of activated sludge and 5 parts of concentration of by weight 7 parts6The Nocardia farcinica bacteria suspension of cfu/mL is made；Described extract of activated sludge is the activated sludge of dry weight 2-15 part by weight to be mixed merga pass rotary shaker with the clear water of 30-45 part and shakes 3min with the rotating speed of 300r/min and form.
Described active biological film quantity is 2 pieces, and every piece of active bio membrane area is 0.5m2；In described operation d, sanitary sewage is to flow through active biological film with the speed of 0.5m/min, and its temperature is 40 DEG C.
Described operation d is carried out in a biofilm filtration room, and described active biological film is vertically provided in biofilm filtration room, is provided with the water inlet entered for sanitary sewage bottom biofiltration room, and bottom active biological film, the vertical dimension away from water inlet is 1m；Active biological film is arranged over the outlet having supplied the filtrate filtered to flow away.
Described operation e is to carry out in an oxidizing chamber connected with described biofilm filtration room outlet；Being full of oxygen in described oxidizing chamber, its inwall is provided with the jog of surface undulation.
Described oxidizing chamber is that one end connects with biofilm filtration room, the other end is the coil of discharge outlet, and sewage flows 5 hours in coil.
In described operation a, hydrolysis refers to use aeration and aerobic activated sludge method that the macromole organic pollution of indissoluble in sanitary sewage is decomposed into water miscible small-molecule substance；Described acidifying refers to use anaerobic acid-production microorganism at full CO2Under the sealed environment of gas, at a temperature of 40 DEG C by carbohydrate-modifying in sanitary sewage for organic acid until sanitary sewage pH is down to 3.4.
Described sanitary sewage is carried out methane fermentation by described operation b refer to use methane fermentation microorganism at full CO2The sealed environment of gas, sanitary sewage is carried out under the conditions of 50 DEG C methane fermentation, every 10m3Sanitary sewage carry out methane fermentation process 36 hours.
Embodiment 4
Large scale business residential quarter, Zhong Kai high and new technology industrial development zone, Guangdong Huizhou city, its waste component produced is complicated, and pollutional load is high, in alkalescence, the day discharge water yield 30000
Ton, COD2000mg/L, former water BC ratio 0.45,1200 times of mg/L of colourity.The present embodiment provides a kind of Power-free domestic sewage treatment method, including following operation:
A. sanitary sewage is hydrolyzed and acidification, the macromolecule contaminant being insoluble in water in sewage is hydrolyzed to soluble small molecular material, produces organic acid simultaneously；
B. described sanitary sewage is carried out methane fermentation, be water and carbon dioxide by small-molecule substance therein and anaerobic digestion, produce methane gas simultaneously；
C. described sanitary sewage is carried out precipitation process, removes the insoluble impurities of precipitation；
D. make described sanitary sewage from lower by adsorbable and organic 4 active biological films of anaerobic biodegradation, carry out biological activity filtering process, it is thus achieved that filtrate；
E. described filtrate is made to be fully contacted with oxygen, further oxidative degradation Organic substance therein；
F. the filtrate after oxidative degradation is collected；Or row is collected again after carrying out disinfection the filtrate of oxidized degraded.
Described active biological film contains bioactive materials.
Described bioactive materials is 10 by extract of activated sludge and 4 parts of concentration of by weight 9 parts5The Nocardia farcinica bacteria suspension of cfu/mL is made；Described extract of activated sludge is that the activated sludge of dry weight 3 parts and the clear water of 30-45 part by weight mixes merga pass rotary shaker and shake 4min with the rotating speed of 290r/min and form.
Described active biological film quantity is 4 pieces, and every piece of active bio membrane area is 0.6m2；In described operation d, sanitary sewage is to flow through active biological film with the speed of 0.2m/min, and its temperature is 48 DEG C.
Described operation d is carried out in a biofilm filtration room, described active biological film vertically and is in parallel to each other arranged in biofilm filtration room, being provided with the water inlet entered for sanitary sewage bottom biofiltration room, bottom active biological film, the vertical dimension away from water inlet is 0.7m；Active biological film is arranged over the outlet having supplied the filtrate filtered to flow away.
Described operation e is to carry out in an oxidizing chamber connected with described biofilm filtration room outlet；Being full of oxygen in described oxidizing chamber, its inwall is provided with the jog of surface undulation.Concrete, described jog is the convex grain being crisscross arranged on inwall.
Described oxidizing chamber is that one end connects with biofilm filtration room, the other end is the coil of discharge outlet, and sewage flows 6 hours in coil.
In described operation a, hydrolysis refers to use aeration and aerobic activated sludge method that the macromole organic pollution of indissoluble in sanitary sewage is decomposed into water miscible small-molecule substance；Described acidifying refers to use anaerobic acid-production microorganism at full CO2Under the sealed environment of gas, at a temperature of 50 DEG C by carbohydrate-modifying in sanitary sewage for organic acid until sanitary sewage pH is down to 2.5.
Described sanitary sewage is carried out methane fermentation by described operation b refer to use methane fermentation microorganism at full CO2The sealed environment of gas, sanitary sewage is carried out under the conditions of 44 DEG C methane fermentation, every 10m3Sanitary sewage carry out methane fermentation process 45 hours.
Result and conclusion
Table 1 is for for using GB
The sewage quality testing result that embodiment 1-4 is processed by 18918-2002.From result, the sanitary sewage using technical scheme to process, can effectively remove organic pollution therein, remaining index also reaches country's secondary discharge standard.In whole sewage disposal process, and it is not introduced into any exogenous power, it is achieved the unpowered processing intent of 0 energy consumption.
Table 1 embodiment 1-4 sewage disposal result
| pH | CODcr | BOD5 | Colourity | SS | |
| Embodiment 1 | 5.6-7.5 | ＜ 110mg/L | ＜ 60mg/L | 100 times | ＜ 100mg/L |
| Embodiment 2 | 5.6-7.5 | ＜ 105mg/L | ＜ 60mg/L | 60 times | ＜ 90mg/L |
| Embodiment 3 | 6.5-7.5 | ＜ 100mg/L | ＜ 50mg/L | 70 times | ＜ 100mg/L |
| Embodiment 4 | 6.5-7.5 | ＜ 110mg/L | ＜ 60mg/L | 50 times | ＜ 95mg/L |
Being more than the wherein specific implementation of the present invention, it describes more concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, for the person of ordinary skill of the art, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement, these obvious alternative forms belong to protection scope of the present invention.
Claims (1)
1. a Power-free domestic sewage treatment method, is made up of following operation:
A. sanitary sewage is hydrolyzed and acidification, the macromolecule contaminant being insoluble in water in sewage is hydrolyzed to soluble small molecular material, produces organic acid simultaneously；
B. described sanitary sewage is carried out methane fermentation, be water and carbon dioxide by small-molecule substance therein and anaerobic digestion, produce methane gas simultaneously；
C. described sanitary sewage is carried out precipitation process, removes the insoluble impurities of precipitation；
D. make described sanitary sewage from lower by adsorbable and aerobic/anaerobic biodegradation at least one active biological film organic, carry out biological activity filtering process, it is thus achieved that filtrate；
E. described filtrate is made to be fully contacted with oxygen, further oxidative degradation Organic substance therein；
F. the filtrate after oxidative degradation is collected；Or row is collected again after carrying out disinfection the filtrate of oxidized degraded；
Described active biological film contains bioactive materials；
Described bioactive materials is 10 by extract of activated sludge and 15 parts of concentration of by weight 7 15 parts5‐107The Nocardia farcinica bacteria suspension of cfu/mL is made；
Described extract of activated sludge is that the activated sludge of dry weight 2 15 parts and the clear water of 30 45 parts by weight mixes merga pass rotary shaker and shake 3 5min with the rotating speed of 100 300r/min and form；
Described active biological film quantity is 35 pieces, and every piece of active bio membrane area is 0.5 1m2；
In described operation d, sanitary sewage is to flow through active biological film with the speed of 0.1 0.5m/min, and its temperature is 40 DEG C 50 DEG C；
Described operation d is carried out in a biofilm filtration room, described active biological film is arranged in biofilm filtration room horizontal or vertically, being provided with the water inlet entered for sanitary sewage bottom biofiltration room, bottom active biological film, the vertical dimension away from water inlet is 0.5 1m；Active biological film is arranged over the outlet having supplied the filtrate filtered to flow away, and described operation e is to carry out in an oxidizing chamber connected with described biofilm filtration room outlet；Being full of oxygen in described oxidizing chamber, its inwall is provided with the jog of surface undulation, and described oxidizing chamber is that one end connects with biofilm filtration room, the other end is the coil of discharge outlet, and sewage flows 5 10 hours in coil；
In described operation a, hydrolysis refers to use aeration and aerobic activated sludge method that the macromole organic pollution of indissoluble in sanitary sewage is decomposed into water miscible small-molecule substance；Described acidifying refers to use anaerobic acid-production microorganism at full CO 2Under the sealed environment of gas, at a temperature of 40 60 DEG C by carbohydrate-modifying in sanitary sewage for organic acid until sanitary sewage pH is down to 2.1 3.4；
Described sanitary sewage is carried out methane fermentation by described operation b refer to use methane fermentation microorganism at full CO2The sealed environment of gas, sanitary sewage is carried out under the conditions of 30 50 DEG C methane fermentation, every 10m3Sanitary sewage carry out methane fermentation and process 36 50 hours.
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