CN101234816A - Odorless aeration oxidation pond sewage treatment method - Google Patents
Odorless aeration oxidation pond sewage treatment method Download PDFInfo
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- CN101234816A CN101234816A CNA2008100337202A CN200810033720A CN101234816A CN 101234816 A CN101234816 A CN 101234816A CN A2008100337202 A CNA2008100337202 A CN A2008100337202A CN 200810033720 A CN200810033720 A CN 200810033720A CN 101234816 A CN101234816 A CN 101234816A
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- oxidation pond
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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
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention relates to a method for treating sewage in an aeration lagoon without stink, which is a treatment method of activated sludge. The inside of the lagoon has an aeration device, wherein, the aeration lagoon is internally provided with a suspended or floating medium, on which plants are planted; the plants at least cover a part of surface of the aeration lagoon; the inside of the aeration lagoon is provided with matrix suspended under the medium and/or arranged at a bottom of the lagoon, wherein, the matrix is one or the combined matter of furnace slag, coal ashes, and mineral containing alkali oxides. The treatment method has the advantages that the aeration lagoon has the medium forming a floating island; the plants planted on the floating island have biomembranes; the total removing ability of phosphate and ammonia nitrogen is increased; the stink during the operation course of the lagoon is absorbed; the matrix is set; the phosphate removal ability of the aeration lagoon is increased; the investment of other mechanical equipments or treatment technologies is not required; the construction is convenient; the cost is low; the operation and management are quite simple; the environment is beautified; the medium can be made of waste materials; the matrix is industrial waste residues; and the environmental protection concept is reached.
Description
Technical field
The invention belongs to environmental technology field, be a kind of sewage water treatment method, relate in particular to a kind of odorless aeration oxidation pond sewage treatment method.
Background introduction
The oxidation pond sewage disposal technology is a kind of technology of utilizing natural detergent power that sewage is handled, and its scavenging process is similar to the self-purification process of natural water.Oxidation pond was risen in 20 beginnings of the century, and with respect to other sewage disposal technology, its sharpest edges are that construction cost and running cost are very low.Be subjected to the influence of global energy crisis, nearly 30 or 40 years, the lower and stable oxidation pond technology of energy consumption is comparatively fast developed.Aeration oxidation pond (Aeration Pond) is as one type of oxidation pond, is extended aeration process in activated sludge process and a kind of technology between the oxidation pond.Its principal feature is: take the oxygen supply of artificial recharge mode, all be in oxygen condition in the pool, do not have the mud return-flow system, floor space is less relatively.
For simple aeration oxidation pond, the problem that exists in the actual moving process comprises: stink is serious in (1) oxidation pond operational process; (2) initial stage dephosphorization treatment effect is better, but along with the long-time running of aeration oxidation pond, because the spoil disposal number of times is less, the maximal oxygen phosphorus amount of mud is limited, is difficult to further phosphorus be removed, and influences the suction phosphorus effect of mud.
There are some researches show that biological phosphate-eliminating is that to rely under the aerobic environment phosphorus of picked-up more than the phosphorus of the following release of anaerobic environment, and discharges the removal that a certain amount of mud is guaranteed phosphorus, and the sludge discharging period of the interior mud of oxidation pond is very long, is unfavorable for the discharging of phosphorus.Therefore, aeration oxidation pond exists at present that the treatment effect of phosphorus is undesirable, when operation easily produce problems such as stink, and its basic reason is that phosphorus is present in the mud and can not be discharged from.
Existing design to aeration oxidation pond mainly concentrates on the aerating apparatus.As patent No. ZL03114267.2, it discloses a kind of aerated oxidation ditch, is made up of underwater scooter and micro-pore aeration mechanism, and micro-pore aeration mechanism is made of gas blower, micro porous aeration head and pipe connecting, this mechanism has adopted the structure of propelling and micro-pore aeration, is applicable to the aerated oxidation ditch that water is darker.
In order to improve the decontamination effect improving of sewage, can increase preposition anaerobic treatment, adopt precipitating sludge to be back to and release phosphorus in the anaerobic pond, the principle of excessive suction phosphorus is carried out dephosphorization in the aeration tank again.Patent No. ZL200410015578.0 denomination of invention: " the intermittent aeration contact oxidation method is handled sanitary sewage " discloses a kind of treatment process of alternate mode, 90% sewage is introduced into anaerobic pond, 10% sewage enters the intermittent aeration oxidation pond, the sewage of anaerobic pond produces anaerobic reaction with the part mud that comes from the intermittent aeration oxidation pond, enters the aeration oxidation pond again through the sewage of anaerobic pond.The aeration oxidation pond complex treatment process that this technology is more simple must be added new pipeline and the support equipment of pump can be realized, is unfavorable for applying.
And number of patent application 200710056492.6 discloses a kind of back flushing, aeration type undercurrent wetland water body purification apparatus, belong to the soil facture, the soil facture mainly is to utilize bigger specific surface areas such as matrix to carry out microorganism colonization, implantation, thereby carries out sewage disposal.Fill up matrix in treating pond, and plant and to be implanted with waterplant, sewage feeds in the matrix and carries out water distribution, and the bottom is provided with aerator, and root system of plant and filling substrate are as the carrier that adheres to of microorganism, and the effluent stream that enters from water inlet pipe purifies through filling substrate.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of odorless aeration oxidation pond sewage treatment method (High-efficiency and Nonodor Aeration Pond, HNAP), do not increase special mechanical means or treatment process, can under long sludge discharging period, improve the dephosphorization ability of aeration oxidation pond.
The present invention solves the problems of the technologies described above the technical scheme of being taked: a kind of odorless aeration oxidation pond sewage treatment method, be activated sludge method, be provided with aerating apparatus in the pool, wherein, be provided with in the described aeration oxidation pond and suspend or the buoyant medium, plant on the medium plant is arranged, plant covers the part surface of aeration oxidation pond at least, be provided with matrix in the aeration oxidation pond, matrix is suspended on the medium below and/or is sunken to the pool low, wherein, described matrix is a kind of or its combination in the mineral of blast furnace slag, coal ash slag, alkali metal containing oxide compound.Concrete sewage disposal step comprises: sewage enters aeration oxidation pond by water inlet pipe, through the distribution that stirs, carry out sewage purification by active sludge, plant absorbing assimilation nitrogen and phosphorus, root system and matrix that matrix absorption phosphorus, plant are positioned under water form the carrier that microbial film adheres to, and carry out sewage purification, after precipitation reaches mud, water sepn, supernatant liquor is discharged by water shoot.
Described medium be porose/or the bamboo clappers of seam, porose/or the plank, foam materials of seam, porose/or the plastics of seam, porose/or the rubber of seam in a kind of or its combination.Selection to medium requires it can form chinampa floating or that suspend on the pool, mainly adopts light material, and convenient plantation plant, but is not limited to above-mentioned materials.More can adopt various discarded materials as medium of the present invention, meet in the sewage treatment industry design concept environmental requirement.
The water surface planting chinampa of aeration oxidation pond plant, can play the effect of beautifying the environment.Described plant is one or more combinations such as Herba Eichhorniae, water peanut, water lettuce, calamus, mullet grass, Scirpus tabernaemontani, Chinese celery, water chestnut, and is not limited to above-mentioned plant.
Wherein, the planting density of described plant is 10～25kg/m
2The cultivated area of plant decide according to the different sizes of aeration oxidation pond, and its planting density is unsuitable overstocked or thin excessively, and the former has influenced the growth of plant, and the latter has then reduced treatment effect, and in addition, plant needs regularly to salvage or gather in, as summer should every month once.
Contained alkalimetal oxide comprises CaO and/or MgO.
Described matrix particle diameter is 5～15mm.Wherein, matrix need regularly be changed, and the replacement cycle was generally 1～3 year.
Described aerating apparatus is the submerged water aerator, and be 4～8 hours/day working time, and aeration mode is an intermittent aeration, is aeration 0.5 hour, quiescent setting 1.0～1.5 hours, and the total hrt of aeration oxidation pond is not more than 4 days.
The available depth of aeration oxidation pond is 2～4m, with the standard times as mensuration BOD on the 5th, its five-day BOD (BOD
5) surface load is 0.1～3.0g/ (m
2D).
The pond type of aeration oxidation pond can be irregularly shaped for rectangle, circle or other, and its inwall is equipped with anti seepage membrane, to prevent seepage.
The domestication time of plant and matrix is 0.5～1.5 month, and the stable back of domestication activated sludge concentration is 1100～1800mg/L, and sludge discharging period is 3～12 months.The unloading phase plant be in the domestication stage and the root system biofilm biomass is big inadequately, domestication for some time afterload strengthens gradually, is increased to design loading after pollutants removal rate is relatively stable.
Principle of the present invention is:
Take the operation of continuous water inlet, gap water intake mode, the primary process of sewage disposal is: sewage is entered in the aeration oxidation pond by water inlet pipe, and the stirring action by aerating apparatus makes the active sludge uniform mixing in the sewage and the pool; Adopt aerating apparatus to have oxygen supply and the triphasic dual function of mixing solid-liquid gas.Wherein, the main mechanism of action of sewage water treatment method of the present invention comprises:
1, in aeration oxidation pond, organism is oxidized through microbial process, and the ammonia nitrogen in the sewage reaches the effect of denitrogenation through the effect of microorganism nitration denitrification simultaneously;
2, the plant of planting on medium can assimilation nutritive substance nitrogen and phosphorus, it is positioned at undersurface root system can become the carrier that microbial film adheres to, plant covers the surface of at least a portion aeration oxidation pond simultaneously, can reduce the discharging of foul smell in the oxidation pond operational process, purify and improve surrounding air environment;
3, the medium bottom matrix that hangs or be sunken at the bottom of the pool can effectively absorb phosphoric, and the matrix of suspension also can be used as biomembranous carrier, increases the biofilm biomass that adheres in the oxidation pond;
4, utilize alkaline matrix absorption phosphoric of the present invention, can increase the sludge discharging period of active sludge conversely, can not influence the sewage dephosphorization effect.
Sewage water treatment method difference with the prior art of the present invention is:
At first, treatment process of the present invention is to adopt active sludge treatment mechanism, utilizes the microorganism in the active sludge to come oxidation, nitrated, thus ammonia nitrogen removal, dephosphorization.And general soil, wetland facture are to utilize the porous surface of matrix to amass the implantation microorganism, even if adopt aeration, also just in order to increase the content of dissolved oxygen, mechanism is different fully.
Secondly, the present invention has adopted different matrix.In general soil facture, mainly adopt rubble, haydite etc. to have the matrix of vesicular structure, utilize their bigger specific surface areas, for providing, microorganism adheres to carrier as far as possible, form bio-film colonization.And matrix of the present invention mainly is to recycle the industrial waste waste residue, has the suitable value of environmental protection, can certainly contain the mineral of alkalimetal oxide for other, and the content of alkalimetal oxide can be quite high.And,, when carrying out sewage disposal, can form strong basicity if matrix is alkalimetal oxide for general soil facture, although alkalescence has effect preferably for dephosphorization, the ability that reduces chemical oxygen demand COD is weakened greatly, do not have effect even, can't realize sewage disposal.And the present invention does not just have similar problem fully, because the occupancy volume of consumption in the sludge treatment of pool form of waste materials such as blast furnace slag, coal ash slag is little, even if therefore adopt the high matrix of alkali metal containing oxide amount can not impact sewage disposal yet.
In addition, the present invention has utilized the most basic aeration oxidation pond equipment, need not it is added any other special mechanical means or treatment process, kind of the medium that plant is arranged just is set on the pool, below medium, hang matrix, make easy one by one chinampa, be highly suitable in various original treatment tanks and promote the use of.
The invention has the beneficial effects as follows:
1, on aeration oxidation pond, is provided with medium, forms the chinampa, on medium, plant plant, plant and root system thereof can adhere to a certain amount of microbial film, effectively improve the total phosphorus of aeration oxidation pond and the removal ability of ammonia nitrogen, absorb the stink in the oxidation pond operational process, improve the ambient air quality;
2, hang in the medium bottom or the pool is low that alkali metal oxide-based matter is set, utilize its surface-area can increase the biofilm biomass that adheres to, also can effectively improve the dephosphorization ability of aeration oxidation pond;
3, in odorless aeration oxidation pond sewage disposal operational process of the present invention, can efficiently remove pollutents such as organism, ammonia nitrogen and total phosphorus, and utilized original aeration oxidation pond, need not the input of other mechanical means or treatment process, it is convenient to build, with low cost, operational administrative is very simple;
4, adopt the chinampa form on the treatment tank water surface, to plant plant, can also beautify the environment;
5, medium of the present invention can adopt discarded material to make, and matrix also can be industrial residue, meets the environmental protection concept in field, place of the present invention fully.
Description of drawings
Fig. 1 is a plan structure synoptic diagram of the present invention.
Fig. 2 is a sectional structure synoptic diagram of the present invention.
Label declaration in the accompanying drawing
1-water inlet pipe 2-water shoot 3-aerating apparatus
4-medium 5-plant 6-matrix
The 7-anti seepage membrane
I-soil layer II-brick layer
IV-mud district, III-contraminated zone.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing.
Seeing also Fig. 1 is plan structure synoptic diagram of the present invention, Fig. 2 is shown in the sectional structure synoptic diagram of the present invention, a kind of odorless aeration oxidation pond sewage treatment method, be activated sludge method, the bottom of aeration oxidation pond is a brick layer II structure, and top is soil layer I structure, inner bottom part zone, the pool is for containing the mud district IV of active sludge, top is contraminated zone III, and the mud district IV of pool inner bottom part is provided with aerating apparatus 3, is the submerged water aerator.The available depth of aeration oxidation pond is 2～4m, and its inwall is provided with anti seepage membrane 7.
Be provided with buoyant medium 4 in the described aeration oxidation pond, this medium 4 is the depleted plastic plate, and planting on the medium 4 has plant 5, and plant 5 is a Herba Eichhorniae, and planting density is 10～25kg/m
2, medium 4 bottoms are hung with matrix 6, and low also the sinking in the pool has matrix 6, and it is the blast furnace slag of 5～15mm that matrix 6 adopts particle diameters.The area coverage of planting the medium 4 that is implanted with plant 5 is approximately 1/2 of aeration oxidation pond area.
The domestication time of plant 5 and matrix 6 is about 1 month, and the stable back of domestication activated sludge concentration is about 1500mg/L, and sludge discharging period is 3～12 months.
Sewage directly enters mud district IV through water inlet pipe 1, adopts gap Inlet and outlet water operation, and the stirring action by aerating apparatus 3 makes the mud uniform mixing in the sewage and the pool, purifies.Be 4～8 hours/day the working time of described aerating apparatus 3, and aeration mode is an intermittent aeration, is aeration 0.5 hour, quiescent setting 1.0～1.5 hours, and total water retention time of aeration oxidation pond is not more than 4 days, BOD
5Surface load is 0.1～3.0g/ (m
2D).Organism in the sewage is oxidized through microbial process, and the ammonia nitrogen in the sewage reaches the effect of denitrogenation through the effect of microorganism nitration denitrification simultaneously.
The plant 5 of plantation can assimilation nutritive substance nitrogen and phosphorus on medium 4, it is positioned at undersurface root system can become the carrier that microbial film adheres to, plant 5 covers the surface of a part of aeration oxidation pond simultaneously, can reduce the discharging of foul smell in the oxidation pond operational process, purify and improve surrounding air environment.
After precipitation reaches mud-water separation, supernatant liquor is by discharging with the water shoot 2 of contraminated zone III UNICOM.
Utilize odorless aeration oxidation pond sewage treatment method of the present invention that domestic sewage in rural areas by using is handled, its chemical oxygen demand COD is 124～353mg/L, and mean value is 259mg/L; Ammonia nitrogen (NH
4 +-N) be 21.9～43.5mg/L, mean value is 35.0mg/L; Total nitrogen (TN) is 35.4～47.6mg/L, mean value 39.0mg/L; Total phosphorus (TP) is 2.26～7.67mg/L, and mean value is 4.98mg/L; Sludge concentration (MLSS) is 1181～1685mg/L, and mean value is 1434mg/L.
HNAP suspension medium surface plantation Herba Eichhorniae, the bottom hangs matrix, and it is the blast furnace slag of 5～15mm that matrix adopts particle diameter.As shown in Figure 2, it is placed in the middle that water inlet pipe is positioned at front end, and it is placed in the middle that water port is positioned at tail end.Adopting intermittently Inlet and outlet water operation, is 0.2m at the water inlet hydraulic load
3/ m
2Under the d condition, by this processing, chemical oxygen demand COD average out to 52mg/L in the water outlet, ammonia nitrogen average out to 7.5mg/L, total phosphorus average out to 0.83mg/L, total nitrogen average out to 16.5mg/L reaches among the GB18918-2002 one-level B and puts standard.
Claims (10)
1, a kind of odorless aeration oxidation pond sewage treatment method, be activated sludge method, be provided with aerating apparatus in the pool, it is characterized in that: be provided with suspension or buoyant medium in the described aeration oxidation pond, planting on the medium has plant, plant to cover the part surface of aeration oxidation pond at least, be provided with matrix in the aeration oxidation pond, matrix is suspended on medium below and/or is sunken to the pool low, and wherein, described matrix is a kind of or its combination in the mineral of blast furnace slag, coal ash slag, alkali metal containing oxide compound.
2, odorless aeration oxidation pond sewage treatment method according to claim 1 is characterized in that: described medium be porose/or the bamboo clappers of seam, porose/or the plank, foam materials of seam, porose/or the plastics of seam, porose/or the rubber of seam in a kind of or its combination.
3, odorless aeration oxidation pond sewage treatment method according to claim 1 and 2 is characterized in that: the plant of planting on described medium is one or more combinations such as Herba Eichhorniae, water peanut, water lettuce, calamus, mullet grass, Scirpus tabernaemontani, Chinese celery, water chestnut.
4, odorless aeration oxidation pond sewage treatment method according to claim 3 is characterized in that: the planting density of described plant is 10～25kg/m
2
5, odorless aeration oxidation pond sewage treatment method according to claim 1 is characterized in that: contained alkalimetal oxide comprises CaO and/or MgO.
6, odorless aeration oxidation pond sewage treatment method according to claim 1 or 5, it is characterized in that: the particle diameter of described matrix is 5～15mm.
7, odorless aeration oxidation pond sewage treatment method according to claim 1, it is characterized in that: described aerating apparatus is the submerged water aerator, be 4～8 hours/day working time, aeration mode is an intermittent aeration, be aeration 0.5 hour, quiescent setting 1.0～1.5 hours, the total hrt of aeration oxidation pond is not more than 4 days.
8, odorless aeration oxidation pond sewage treatment method according to claim 1 is characterized in that: the available depth of aeration oxidation pond is 2～4m, BOD
5Surface load is 0.1～3.0g/ (m
2D).
9, odorless aeration oxidation pond sewage treatment method according to claim 1 is characterized in that: the domestication time of plant and matrix is 0.5～1.5 month, and the stable back of domestication activated sludge concentration is 1100～1800mg/L, and sludge discharging period is 3～12 months.
10, odorless aeration oxidation pond sewage treatment method according to claim 9, it is characterized in that: sewage enters aeration oxidation pond by water inlet pipe, through the distribution that stirs, carry out sewage purification by active sludge, carry out assimilation by plant, matrix, root system and matrix that plant is positioned under water form the carrier that microbial film adheres to, and carry out sewage purification, after precipitation reaches mud-water separation, supernatant liquor is discharged by water shoot.
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| CNA2008100337202A CN101234816A (en) | 2008-02-20 | 2008-02-20 | Odorless aeration oxidation pond sewage treatment method |
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| CNA2008100337202A CN101234816A (en) | 2008-02-20 | 2008-02-20 | Odorless aeration oxidation pond sewage treatment method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102863081A (en) * | 2011-07-08 | 2013-01-09 | 李鸿惠 | Three-dimensional ecological deodorization dephosphorization denitrification method as well as device and application |
| CN103342413A (en) * | 2013-07-05 | 2013-10-09 | 北京佳业佳境环保科技有限公司 | Town domestic wastewater treatment method based on biological contact oxidation pond |
| CN103523925A (en) * | 2013-11-04 | 2014-01-22 | 哈尔滨工业大学深圳研究生院 | Plant-activated sludge combined wastewater treatment device free of stink release |
| CN104891641A (en) * | 2015-06-15 | 2015-09-09 | 武汉中科水生环境工程股份有限公司 | Vegetation bed aeration tank sewage treatment device |
| CN112062405A (en) * | 2020-09-08 | 2020-12-11 | 中国科学院南京地理与湖泊研究所 | Landscape lake water replenishing purification process |
| CN112093978A (en) * | 2020-09-08 | 2020-12-18 | 中国科学院南京地理与湖泊研究所 | Landscape lake moisturizing purification structure |
| CN113149333A (en) * | 2021-03-12 | 2021-07-23 | 贵州雏阳生态环保科技有限公司 | Wetland construction method for deeply purifying sewage by using macrophyte |
| CN115259559A (en) * | 2022-07-29 | 2022-11-01 | 中国科学院南京地理与湖泊研究所 | Comprehensive treatment system for domestic sewage and farmland drainage in rural gathering area |
-
2008
- 2008-02-20 CN CNA2008100337202A patent/CN101234816A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102863081A (en) * | 2011-07-08 | 2013-01-09 | 李鸿惠 | Three-dimensional ecological deodorization dephosphorization denitrification method as well as device and application |
| WO2013007174A1 (en) * | 2011-07-08 | 2013-01-17 | 深圳地大水务工程有限公司 | Three-dimensional ecological deodorant dephosphorization denitrification method and device, and application thereof |
| CN102863081B (en) * | 2011-07-08 | 2014-10-29 | 深圳地大水务工程有限公司 | Three-dimensional ecological deodorization dephosphorization denitrification method as well as device and application |
| CN103342413A (en) * | 2013-07-05 | 2013-10-09 | 北京佳业佳境环保科技有限公司 | Town domestic wastewater treatment method based on biological contact oxidation pond |
| CN103523925A (en) * | 2013-11-04 | 2014-01-22 | 哈尔滨工业大学深圳研究生院 | Plant-activated sludge combined wastewater treatment device free of stink release |
| CN104891641A (en) * | 2015-06-15 | 2015-09-09 | 武汉中科水生环境工程股份有限公司 | Vegetation bed aeration tank sewage treatment device |
| CN112062405A (en) * | 2020-09-08 | 2020-12-11 | 中国科学院南京地理与湖泊研究所 | Landscape lake water replenishing purification process |
| CN112093978A (en) * | 2020-09-08 | 2020-12-18 | 中国科学院南京地理与湖泊研究所 | Landscape lake moisturizing purification structure |
| CN113149333A (en) * | 2021-03-12 | 2021-07-23 | 贵州雏阳生态环保科技有限公司 | Wetland construction method for deeply purifying sewage by using macrophyte |
| CN115259559A (en) * | 2022-07-29 | 2022-11-01 | 中国科学院南京地理与湖泊研究所 | Comprehensive treatment system for domestic sewage and farmland drainage in rural gathering area |
| CN115259559B (en) * | 2022-07-29 | 2023-08-22 | 中国科学院南京地理与湖泊研究所 | Comprehensive treatment system for domestic sewage and farmland drainage in rural aggregation area |
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Open date: 20080806 |