CN101665310B - Method for treating wastewater in artificial wetland and wastewater treating device for implementing method - Google Patents
Method for treating wastewater in artificial wetland and wastewater treating device for implementing method Download PDFInfo
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- CN101665310B CN101665310B CN2009101926942A CN200910192694A CN101665310B CN 101665310 B CN101665310 B CN 101665310B CN 2009101926942 A CN2009101926942 A CN 2009101926942A CN 200910192694 A CN200910192694 A CN 200910192694A CN 101665310 B CN101665310 B CN 101665310B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention discloses a method for treating wastewater in an artificial wetland and a wastewater treating device for implementing the method, wherein the method for treating the wastewater comprises the following steps: firstly, taking advantage of plant roots to absorb N, C and P from the wastewater so that part of N, COD, BOD and P can be removed; then utilizing nitrobacterium, aerobes and polyphosphate accumulationg bacteria to remove ammonia, organisms and phosphorus from the wastewater; then, utilizing acidified hydrolytic bacteria and anoxic bacteria to remove macromolecular organisms; and finally utilizing methane bacteria and anaerobes to remove organic acid and micromolecular organisms. In addition, the wastewater treating device comprises an artificial pond. The bottom of the artificial pond is provided with a bearing layer. An active carbon filter layer for filtering and purifying water is arranged above the bearing layer. A bacteria layer for eliminating and decomposing various pollutants in the wastewater is arranged above the active carbon filter layer. A layer of wetland filler is arranged between the active carbon filter layer and the bacteria layer. In the artificial pond, the bottom of the bearing layer is provided with a water draining pipe.
Description
[technical field]
The present invention relates to the method that the pre-buried microorganism vertical current constructed wetland of a kind of multilayer disposes of sewage and the waste disposal plant of this method of realization.
[background technology]
Existing vertical current constructed wetland is disposed of sewage in the middle of the device and the method for disposing of sewage.When sewage from top to bottom or from bottom to top during perpendicular flow, natural microorganism enters water body and utilizes the nutrition in the water to perch growth on the plant root of this wetland or filler.After screening naturally for a long time, the microorganism that is grown in this wetland has just formed the special bacterial classification that obligate is disposed of sewage.This bacterial classification forms the ecosystem with the plant of wetland is purified water quality.
But its following shortcoming of this method:
One, microorganism are very long in superseded screening process, and the sewage disposal debugging cycle is long.
Two, the microorganism of wetland is more assorted, and obligate is not strong.
Three, assorted bacterium and obligate bacterium strive food nutrition, make that obligate bacterium activity is not strong, thereby have reduced the efficient of sewage disposal.
In the middle of the sewage water treatment method of this invention, the applicant is in the utility model of having applied for a waste disposal plant on the same day, and the inventive method utilizes this device to realize disposing of sewage.
[summary of the invention]
Another object of the present invention be overcome deficiency of the prior art and a kind of good sewage processing effect is provided, accelerated sewage disposal speed, improve the sewage treatment method of the removal efficient of wetland.
Purpose of the present invention be overcome deficiency of the prior art and good sewage processing effect is provided, accelerated sewage disposal speed, improve the waste disposal plant of the removal efficient of wetland.
In order to solve the technical problem of above-mentioned existence, the present invention adopts following technical proposal:
The method that the pre-buried microorganism vertical current constructed wetland of a kind of multilayer is disposed of sewage is characterized in that sewage treatment process includes following steps:
N, COD, BOD, the P of part in a, the removal sewage: build a cistern earlier, in cistern, be provided with aquatic or hygrophyte, aquatic or hygrophyte utilizes N, C, P in the root absorption sewage of aquatic or hygrophyte, so can be removed N, COD, BOD, the P of part;
B, remove ammonia, partial organic substances, portion C OD and BOD and phosphorus in the sewage: remove after N, COD partly, BOD, the P through aquatic or hygrophyte, in cistern, be provided with the first bacterium layer that one deck includes nitrifier, aerobic bacteria, polyP bacteria, utilize the nitrifier in the bacterium layer that the ammonia in the water is changed into nitric acid or nitrite anions; Utilize aerobic bacteria that partial organic substances in the water is resolved into CO
2, H
2O promptly removes portion C OD and BOD; Utilize polyP bacteria to absorb phosphorus in the water and form the organism of self, calcium, the iron in final and the wet land filler layer forms insoluble calcium phosphate, tertiary iron phosphate and amasss and invest between the root of filler or plant;
Larger molecular organics, carbon in c, the removal sewage: in cistern, be respectively arranged with second bacterium layer that includes hold concurrently oxygen bacterium, acidified hydrolytic bacteria, froth breaking bacterium, denitrifying bacteria and the 3rd bacterium layer that includes anoxic bacteria, denitrifying bacteria; Utilize acidified hydrolytic bacteria, anoxic bacteria that macromolecular organism in the water is changed into micromolecular organism, thereby remove the organism in the decontaminated water;
Organic acid, the small organic molecule of the simple molecules in d, the removal sewage: in cistern, be provided with the 4th bacterium layer 44 that includes methanobacteria, anerobe, utilize methanobacteria, anerobe that the organic acid of simple molecules and small organic molecule are being resolved into methane, CO
2, H
2O, thereby COD, BOD in the elimination water;
E, discharging: after above-mentioned steps, the nuisance in the sewage is all almost all removed, and is provided with a water shoot in cistern, and filtered sewage is through the water shoot discharging.
The method that the pre-buried microorganism vertical current constructed wetland of aforesaid multilayer is disposed of sewage, after it is characterized in that described d step, in cistern, be provided with an activated carbon filter layer, utilize activated carbon filter layer solution wetland initial stage plant and the microorganism weakness of growth process weak effect just, prevention of water is handled defective contaminate environment.
The method that the pre-buried microorganism vertical current constructed wetland of aforesaid multilayer is disposed of sewage is characterized in that being provided with a wet land filler between the adjacent bacterium layer in above-mentioned four bacterium layers.
Waste disposal plant, it is characterized in that including cistern, be provided with supporting layer in described cistern bottom, above supporting layer, be provided with the activated carbon filter layer of one deck filtration, purification water quality, above activated carbon filter layer, be provided with the mushroom layer that to eliminate and to decompose all contaminations in the sewage, be provided with one deck wet land filler layer between activated carbon filter layer and mushroom layer, planting above the mushroom layer has aquatic or hygrophyte, in cistern, the supporting layer bottom is provided with water shoot.
Aforesaid waste disposal plant, it is characterized in that described mushroom layer includes four layers of obligate bacterium layer, described four layers of obligate bacterium layer are respectively the first bacterium layer, the second bacterium layer, the 3rd bacterium layer, the 4th bacterium layer from top to bottom, all be provided with one deck wet land filler layer between the adjacent bacterium layer, wherein the obligate bacterium of the first bacterium layer is nitrifier, aerobic bacteria, polyP bacteria; The obligate bacterium of the second bacterium layer is oxygen bacterium, acidified hydrolytic bacteria, froth breaking bacterium, the denitrifying bacteria of holding concurrently; The obligate bacterium of the 3rd bacterium layer is anoxic bacteria, denitrifying bacteria; The obligate bacterium of the 4th bacterium layer is methanobacteria, anerobe.
Aforesaid waste disposal plant, the thickness that it is characterized in that described Da Shi layer is 300mm, the Da Shi diameter is 15mm-35mm; The thickness of microlith layer is 150mm, and the microlith diameter is 6mm-10mm.
Aforesaid waste disposal plant is characterized in that being provided with the sand filter blanket of suspended substance in effective deadening water between activated carbon filter layer and microlith layer, the thickness of described sand filter blanket is 50mm-300mm, and the diameter of fine sand is 1mm-4mm.
Aforesaid waste disposal plant, the thickness that it is characterized in that described activated carbon filter layer is at 30mm-50mm.
Aforesaid waste disposal plant is characterized in that the water inlet pipe that sewage is entered above the mushroom layer being provided with on the cistern.
The present invention compared with prior art has following advantage: the present invention adopts the mode of pre-buried obligate bacterium.Different according to the kind of water pollutant and concentration are correspondingly preset the microorganism of different thickness and corresponding kind, thereby reach quick startup artificial swamp and improve the purpose of wetland clearance.Device of the present invention is exactly to utilize a cistern to lay a plurality of obligate bacterium layers.
Different according to the kind of water pollutant and concentration correspondingly are equipped with the microorganism of different thickness and corresponding kind, thereby reach quick startup artificial swamp and improve the purpose of wetland clearance.Owing to remove different pollutents different microorganisms is arranged, so pollutant removal is good.The microorganism that presets different thickness and corresponding kind is arranged again, solved long shortcoming of special spawn culture time.
The present invention utilizes in the method that this device disposes of sewage, and sewage needs the people to enter pipe to flow into, and sewage is from last and advance to infiltrate several obligate bacterial classification layers respectively afterwards, thus reach dispose of sewage in the effect of different pollutents.Its treatment process is quick, time weak point, practicality etc.
[description of drawings]
Fig. 1 is the synoptic diagram of waste disposal plant.
[embodiment]
Describe the present invention below in conjunction with accompanying drawing:
The method that the pre-buried microorganism vertical current constructed wetland of a kind of multilayer is disposed of sewage and realize the waste disposal plant of this method, described waste disposal plant include a cistern 1 that is used for sewage disposal, and the big I of cistern 1 is according to the needs of actual design.Be respectively arranged with Da Shi layer 21, microlith layer 22, sand filter blanket 9, activated carbon filter layer 3, wet land filler layer 8, the 4th bacterium layer 44 that includes methanobacteria, anerobe, wet land filler layer 8, the 3rd bacterium layer 43 that includes anoxic bacteria, denitrifying bacteria, wet land filler layer 8 from bottom to top 1 li of this cistern, include the second bacterium layer 42, the wet land filler layer 8 of the oxygen bacterium of holding concurrently, acidified hydrolytic bacteria, froth breaking bacterium, denitrifying bacteria and include the first bacterium layer 41 of nitrifier, aerobic bacteria, polyP bacteria.Planting on the first bacterium layer 41 has aquatic or hygrophyte 6.Make the first bacterium layer 41, the second bacterium layer 42, the 3rd bacterium layer 43, the 4th bacterium layer 44 form a big mushroom layer 4.
In cistern 1, Da Shi layer 21 bottom are provided with the water shoot 10 to extraneous draining.In cistern 1 bottom water shoot 10 is set, makes that the water in the cistern 1 is discharged.Wherein water shoot 10 also has backwashing function, can utilize water inlet pipe 7 to carry out backwash after wetland stops up.
The thickness of described Da Shi layer 21 is about 300mm, and the Da Shi diameter is in the 15mm-35mm scope; The thickness of microlith layer 22 is about 150mm, and the microlith diameter is in the 6mm-10mm scope.The thickness of described activated carbon filter layer is at 30mm-50mm.
Described sand filter blanket 9 can effectively deaden the suspended substance in the water, makes water outlet limpider.The thickness of this sand filter blanket 9 is 50mm-300mm, and the diameter of fine sand is 1mm-4mm.
Wherein, after sewage entered cistern 1, sewage was formed with a water layer 5 above the first bacterium layer 41.Can also be provided with the water inlet pipe 7 that sewage is entered above the first bacterium layer 41 on the cistern 1.The sewage that water inlet pipe 7 flows into arrives water layer 5.
Behind wherein every laying one deck wet land filler layer, placing the thick various obligate bacterial classification of the solid powder (or particle) of 2～20mm on the surface of this wet land filler layer or place the various obligate bacterial classification fillers of the thick embedded immobilization of 10～300mm can.
Utilize in the method that above-mentioned waste disposal plant disposes of sewage, the method principle of its processing is as follows: after sewage entered into water layer 5 from water inlet pipe 7, promptly sewage can reach first bacterium layer top.That is the surface of sewage access to plant is when entering this device from top to bottom equably then.Nutrition in the root absorption sewage of plant 6 (N, C, P etc.), plant 6 begin growth, and it has removed part pollutent (N, COD, BOD, P etc.).Wherein BOD is that biological oxygen demand COD is a chemical oxygen demand (COD).This moment, the preembedded dry strain began recovery and breeding after meeting water, can decompose different pollutents at different levels.
When sewage enters the first bacterium layer 41, utilize oxygen that the ammonia in the water is changed into nitric acid or nitrite anions the nitrifier of the first bacterium layer 41.The aerobic bacteria of the first bacterium layer 41 utilize oxygen with water in partial organic substances resolve into CO
2, H
2O removes portion C OD and BOD.The polyP bacteria of the described first bacterium layer 41 absorbs phosphorus in the water and forms the organism of self, and calcium, the iron in final and the wet land filler layer forms insoluble calcium phosphate, tertiary iron phosphate and amasss and invest between the root of filler or plant, and most of phosphorus is that this mode is removed in the water.
Sewage enters the second bacterium layer 42 and the 3rd bacterium layer 43 respectively afterwards, and the dead root that utilizes carbon unit in the water or waterplant at the denitrifying bacteria of the second bacterium layer 42 and the 3rd bacterium layer 43 is converted into nitrogen with nitric acid or nitrite anions, thereby removes the nitrogen in anhydrating as nutrition.
In the second bacterium layer 42 and the 3rd bacterium layer 43, macromolecular organism changes into micromolecular organism in the water under the effect of acidified hydrolytic bacteria, anoxic bacteria, can resolve into the organic acid of simple molecules under the effect of the oxygen froth breaking bacterium of holding concurrently as anion surfactant.
The 4th bacterium layer 44 methanobacteria, anerobe the organic acid of simple molecules and small organic molecule are resolved into methane, CO
2, H
2O, thereby COD, BOD in the elimination water.
Early stage at waste disposal plant utilizes activated carbon filter layer, and to solve wetland initial stage plant and the microorganism weakness of growth process weak effect just, prevention of water is handled defective contaminate environment.The pollutent of gac in the wetland initial stage can planar water starts back plant and microorganism absorption degrading activity charcoal adsorbed contaminants at wetland.
Because pre-buried microorganism, set up the ecological balanced system of wetland within a short period of time, accelerated the speed of sewage disposal, improve the removal efficient of wetland.
Claims (5)
1. method that artificial swamp is disposed of sewage is characterized in that sewage treatment process includes following steps:
N, COD, BOD, the P of part in a, the removal sewage: build a cistern earlier, in cistern, be provided with aquatic or hygrophyte, aquatic or hygrophyte utilizes N, C, P in the root absorption sewage of aquatic or hygrophyte, so can be removed N, COD, BOD, the P of part;
B, remove ammonia, partial organic substances, portion C OD and BOD and phosphorus in the sewage: remove after N, COD partly, BOD, the P through aquatic or hygrophyte, in cistern, be provided with the first bacterium layer that one deck includes nitrifier, aerobic bacteria, polyP bacteria, utilize the nitrifier in the bacterium layer that the ammonia in the water is changed into nitric acid or nitrite anions; Utilize aerobic bacteria that partial organic substances in the water is resolved into CO
2, H
2O promptly removes portion C OD and BOD; Utilize polyP bacteria to absorb phosphorus in the water and form the organism of self, calcium, the iron in final and the wet land filler layer forms insoluble calcium phosphate, tertiary iron phosphate and amasss and invest between the root of filler or plant;
Larger molecular organics, carbon in c, the removal sewage: in cistern, be respectively arranged with second bacterium layer that includes hold concurrently oxygen bacterium, acidified hydrolytic bacteria, froth breaking bacterium, denitrifying bacteria and the 3rd bacterium layer that includes anoxic bacteria, denitrifying bacteria; Utilize acidified hydrolytic bacteria, anoxic bacteria that macromolecular organism in the water is changed into micromolecular organism, thereby remove the organism in the decontaminated water;
Organic acid, the small organic molecule of the simple molecules in d, the removal sewage: in cistern, be provided with the 4th bacterium layer (44) that includes methanobacteria, anerobe, utilize methanobacteria, anerobe that the organic acid of simple molecules and small organic molecule are resolved into methane, CO
2, H
2O, thereby COD, BOD in the elimination water;
E, discharging: through after the above-mentioned steps, the nuisance in the sewage is all almost all removed, and is provided with a water shoot in cistern, and filtered sewage is through the water shoot discharging.
2. the method that artificial swamp according to claim 1 is disposed of sewage, after it is characterized in that described d step, in cistern, be provided with an activated carbon filter layer, utilize activated carbon filter layer solution wetland initial stage plant and the microorganism weakness of growth process weak effect just, prevention of water is handled defective contaminate environment.
3. the method that artificial swamp according to claim 1 and 2 is disposed of sewage is characterized in that being provided with a wet land filler between the adjacent bacterium layer in above-mentioned four bacterium layers.
4. waste disposal plant of realizing claim 1 or 2 or 3 sewage treatment method, it is characterized in that including cistern (1), be provided with supporting layer (2) in described cistern (1) bottom, be provided with the activated carbon filter layer (3) of one deck filtration, purification water quality in supporting layer (2) top, be provided with the mushroom layer (4) that to eliminate and to decompose all contaminations in the sewage in activated carbon filter layer (3) top, between activated carbon filter layer (3) and mushroom layer (4), be provided with one deck wet land filler layer (8), kind has aquatic or hygrophyte (6) in mushroom layer (4) top, in cistern (1), supporting layer (2) bottom is provided with water shoot (10).
5. waste disposal plant according to claim 4, it is characterized in that described mushroom layer (4) includes four layers of obligate bacterium layer, described four layers of obligate bacterium layer are respectively the first bacterium layer (41), the second bacterium layer (42), the 3rd bacterium layer (43), the 4th bacterium layer (44) from top to bottom, all be provided with one deck wet land filler layer (8) between the adjacent bacterium layer, wherein the obligate bacterium of the first bacterium layer (41) is nitrifier, aerobic bacteria, polyP bacteria; The obligate bacterium of the second bacterium layer (42) is oxygen bacterium, acidified hydrolytic bacteria, froth breaking bacterium, the denitrifying bacteria of holding concurrently; The obligate bacterium of the 3rd bacterium layer (43) is anoxic bacteria, denitrifying bacteria; The obligate bacterium of the 4th bacterium layer (44) is methanobacteria, anerobe.
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| CN102719374B (en) * | 2012-05-21 | 2013-12-11 | 北京大学 | Acinetobacter johnsonii bacterial strain capable of low-temperature synchronous denitrification phosphorous removal and application thereof |
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2009
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Cited By (1)
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| CN109937916A (en) * | 2019-05-05 | 2019-06-28 | 沧州临港海益水产养殖有限公司 | A kind of aquaculture method that viable bacteria substrate modifier bottom of pond is pre-buried |
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