CN108862615B - Constructed wetland system for reprocessing wastewater treated by MBR (membrane bioreactor) - Google Patents
Constructed wetland system for reprocessing wastewater treated by MBR (membrane bioreactor) Download PDFInfo
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Abstract
Disclosure of the inventionAn artificial wetland system for reprocessing wastewater after MBR treatment comprises: the device comprises a lifting pump room, an anti-blocking regulating pool, a water distribution channel I, an underflow wetland, a water distribution channel II, a surface flow wetland, a water outlet channel and an ecological buffer zone landscape which are sequentially connected with the water outlet direction of an MBR, wherein the underflow wetland comprises an independent underflow wetland I and an independent underflow wetland II; the surface flow wetland comprises an independent surface flow wetland I and an independent surface flow wetland II; the ecological buffer zone landscape is an amphibious vegetation zone. According to the invention, wastewater treated by an MBR process is input into the constructed wetland and the ecological buffer zone landscape for retreatment, so that the wastewater is completely and effectively treated, the contents of nitrogen, phosphorus, suspended matters, organic matters and the like in effluent after wastewater treatment are obviously reduced, and the problem that the contents of nitrogen, phosphorus, suspended matters, organic matters for feeding and the like in the wastewater exceed standards is well solved; make the annual average effluent quality SS<30mg/L、BOD5<3、CODcr<15、NH3‑N<0.5, TP (Total phosphorus)<0.1。
Description
Technical Field
The invention relates to an artificial wetland system, in particular to an artificial wetland system for retreating wastewater treated by MBR.
Background
The artificial wetland technology originated in europe, and early artificial wetlands were produced by combining sand filter beds and plants. The combination of the plant roots and the sand filter bed has good sewage treatment effect, so the method is also called a root zone method, and is gradually developed into the current mature artificial wetland, including a surface flow artificial wetland, a horizontal subsurface flow artificial wetland and a vertical subsurface flow artificial wetland, wherein the artificial wetland is not only constructed in large scale in Europe and America but also widely applied in China in recent years. The artificial wetland is a comprehensive ecological system which is constructed and controlled artificially and is similar to a marshland, and sewage flows through the artificial wetland and is purified by the treatment of plants, soil and microorganisms. The principle is that an ecological system formed by soil, cultivated aquatic plants and microorganisms attached to fillers is utilized to absorb and decompose organic carbon pollutants and nutritional pollutants containing nitrogen and phosphorus in sewage. The method has the characteristics of good treatment effect, convenient operation, maintenance and management, low engineering capital construction and operation cost and the like, is widely applied to the treatment of agricultural point source and non-point source pollution and water eutrophication problems, and protects the ecological environment.
In the field of sewage treatment and water resource recycling, MBR (Membrane bioreactor) is a novel water treatment technology combining a Membrane separation unit and a biological treatment unit. According to the structure of the membrane, the membrane can be divided into a flat membrane, a tubular membrane, a hollow fiber membrane and the like, and according to the membrane aperture, the membrane can be divided into a microfiltration membrane, an ultrafiltration membrane, a nanofiltration membrane, a reverse osmosis membrane and the like. Compared to many conventional biological water treatment processes, MBRs have the following major advantages: (1) the quality of the effluent is high and stable; (2) the occupied area is small and is not limited by the arrangement occasion; (3) can remove ammonia nitrogen and refractory organics. But the MBR process cannot thoroughly solve the problem of wastewater pollution for some seriously polluted wastewater; therefore, the wastewater treated by the MBR process is input into the constructed wetland system for retreatment, so that the wastewater is completely and effectively treated.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages described hereinafter.
To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided an artificial wetland system for reprocessing wastewater treated by MBR, comprising:
the lift pump house is of a semi-underground double-layer reinforced concrete structure; the lift pump room inputs wastewater treated by MBR;
the anti-blocking regulating tank is positioned at the downstream of the lifting pump room and is communicated with the lifting pump room through a pipeline; the anti-blocking adjusting tank is used for carrying out pretreatment adjustment on the wastewater treated by the MBR, so that solid impurities are reduced, and downstream pipelines and an artificial wetland system are prevented from being blocked;
the water distribution channel I is positioned at the downstream of the anti-clogging regulating tank and is communicated with the anti-clogging regulating tank through a pipeline so as to output the wastewater pretreated and regulated by the anti-clogging regulating tank;
the undercurrent wetland is positioned at the downstream of the water distribution channel I and comprises an independent undercurrent wetland I and an independent undercurrent wetland II; the subsurface flow wetland is communicated with the water distribution channel I through a water pipe to distribute water;
the water distribution channel II is positioned at the downstream of the subsurface flow wetland and is connected with a water outlet of the subsurface flow wetland through a pipeline;
the surface flow wetland is positioned at the downstream of the water distribution channel II and comprises an independent surface flow wetland I and an independent surface flow wetland II; the surface flow wetland is communicated with a water distribution channel II through a water pipe to distribute water;
the water outlet channel is positioned at the downstream of the surface flow wetland and is connected with the water outlet of the surface flow wetland through a pipeline;
an ecological buffer zone landscape positioned at the downstream of the water outlet channel; which is communicated with a water outlet channel through a pipeline; the ecological buffer zone landscape is an amphibious vegetation zone.
Preferably, the length of the lift pump room is 6-8 m, the width of the lift pump room is 3.5-4.5 m, the height of the lift pump room is 7.6-8.5 m, and 2.5-3 m is located underground.
Preferably, the water distribution channel I and the water distribution channel II are identical in structure, the main structure of the outer wall of the water distribution channel I and the main structure of the outer wall of the water distribution channel II are made of masonry, and the water distribution channel I and the water distribution channel II are distributed through 10-12 water passing pipes on the upper portion of the wall body of the water distribution channel I and the wall body of the water distribution channel II.
Preferably, the species cultivated in the ecological buffer zone landscape is one or more of cattail mongolica, cattail euphorbia, grass alisma orientale, alopecurus, barnyard grass, flat-stalk grass and chenopodium album.
Preferably, the anti-clogging regulating reservoir comprises:
a regulating tank body, the interior of which is provided with a space for accommodating waste water;
the filter screen is arranged in the middle of the regulating tank body through a support frame; one end of the support frame is detachably connected with the filter screen; the other end is detachably connected with the edge of the upper end of the regulating tank body;
the regulating reservoir sealing cover is covered at the upper end of the regulating reservoir body; a stirring device is arranged on the regulating tank sealing cover; the stirring device comprises a driving device positioned at the upper part of the regulating reservoir sealing cover, a stirring shaft positioned at the lower part of the regulating reservoir sealing cover and an anchor stirrer fixed on the stirring shaft; the driving device is a stirring motor; the anchor agitator is located the equalizing basin body and is located the top of filter screen.
Preferably, the main structure of the wall body of the subsurface flow wetland is a masonry structure; a pool bottom zeolite packing layer and a pool wall packing layer are respectively arranged on pool walls at the pool bottom and the outlet side of the subsurface wetland, a waterproof layer is arranged between the pool wall packing layer and the pool and is communicated with the pool bottom zeolite packing layer through a bottom overflow port at the bottom of the pool bottom zeolite packing layer, and a water outlet connected to a water distribution channel II is arranged at the top of the pool wall packing layer; the zeolite filler layer at the bottom of the pool is sequentially provided with an organic matter purification layer and a gravel filler layer; wetland plants are planted on the gravel packing layer; the top of the subsurface flow wetland is provided with a water distribution pipe facing the gravel packing layer, and water outlet holes are uniformly distributed on the water distribution pipe; the water distribution pipe is connected with a water passing pipe to communicate the water distribution channel I; the tank wall filler layer is sequentially provided with a tank wall zeolite filler layer, a pathogenic microorganism adsorption layer and a tank wall gravel filler layer from bottom to top; the organic matter purification layer is diatomite.
Preferably, the wetland plants on the subsurface flow wetland are one or more of rhizoma alismatis, reed, cattail and flos lonicerae; the ratio of the thickness of the zeolite filler layer at the bottom of the pool to the thickness of the organic matter purification layer is 1: 1-2; the ratio of the thickness of the organic matter purification layer to the thickness of the broken stone filler layer is 0.5-1: 1; the ratio of the thickness of the zeolite packing layer on the pool wall to the thickness of the pathogenic microorganism adsorption layer is 1: 2-3; the ratio of the thickness of the pathogenic microorganism adsorption layer to the thickness of the crushed stone packing layer on the pool wall is 1-2: 1; the pathogenic microorganism adsorption layer is composed of anthracite, diatomite, steel slag and attapulgite in a weight ratio of 1:2:1: 2.
Preferably, the diatomite is replaced by modified diatomite, and the preparation method comprises the following steps: calcining kieselguhr at 250-350 ℃ for 1-3 h, then feeding the calcined kieselguhr into an atmospheric pressure low-temperature plasma device, enabling the kieselguhr to be positioned at a spraying outlet of the atmospheric pressure low-temperature plasma for 20-60 mm, introducing gas into the atmospheric pressure low-temperature plasma device according to the gas flow of 5-15L/h, applying working voltage to form plasma jet flow, controlling the moving speed of the spraying outlet of the atmospheric pressure low-temperature plasma device to be 5-15 mm/s, enabling the plasma jet flow to be sprayed on the kieselguhr, treating the kieselguhr for 30min, adding 10-30 parts of the treated kieselguhr into a supercritical reaction device according to parts by weight, simultaneously adding 80-120 parts of chitosan solution with the mass fraction of 2-5%, stirring, then sealing the system, introducing carbon dioxide to react for 60-120 min under the condition that the temperature is 40-60 ℃, releasing pressure and drying to obtain modified diatomite; the working voltage is provided by a high-voltage alternating current power supply, the working voltage is 35-100 kV alternating current voltage, and the frequency is 100-300 kHz; the gas is one or a mixture of more of air, rare gas/oxygen, nitrogen and ammonia.
Preferably, the main structure of the wall body of the surface flow wetland is a masonry structure; the surface flow wetland is sequentially provided with a surface flow wetland zeolite filler layer and a surface flow wetland crushed stone filler layer from bottom to top; wetland plants are planted on the surface flow wetland crushed stone filler layer; one end of the top of the surface flow wetland is provided with a water distribution pipe; and the other end of the top of the surface flow wetland is provided with a water outlet pipe which is communicated with the water distribution channel II through a water pipe.
Preferably, the thickness ratio of the zeolite filler layer of the surface flow wetland to the crushed stone filler layer of the surface flow wetland is 4: 7; the wetland plants planted on the surface flow wetland crushed stone filler layer are one or more of reed, cattail and sedum rosea.
The invention at least comprises the following beneficial effects: according to the invention, wastewater treated by an MBR process is input into the constructed wetland and the ecological buffer zone landscape for retreatment, so that the wastewater is completely and effectively treated, the contents of nitrogen, phosphorus, suspended matters, organic matters and the like in effluent after wastewater treatment are obviously reduced, and the problem that the contents of nitrogen, phosphorus, suspended matters, organic matters for feeding and the like in the wastewater exceed standards is well solved; make the annual average effluent quality SS<30mg/L、BOD5<3、CODcr<15、NH3-N<0.5, TP (Total phosphorus)<0.1。
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Description of the drawings:
FIG. 1 is a schematic view of a wastewater treatment process of the constructed wetland system of the invention;
FIG. 2 is a schematic structural view of the anti-clogging conditioning tank of the present invention;
FIG. 3 is a schematic structural diagram of the subsurface wetland of the invention;
fig. 4 is a schematic structural diagram of the surface flow wetland of the invention.
The specific implementation mode is as follows:
the present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
Example 1:
fig. 1 shows an artificial wetland system for reprocessing wastewater after MBR treatment, comprising:
a lift pump house 1 which adopts a semi-underground double-layer reinforced concrete structure; the lift pump room inputs wastewater treated by MBR;
the anti-blocking adjusting tank 2 is positioned at the downstream of the lifting pump room and is communicated with the lifting pump room 1 through a pipeline; the anti-blocking adjusting tank 2 is used for carrying out pretreatment adjustment on the wastewater treated by the MBR, so that solid impurities are reduced, and downstream pipelines and an artificial wetland system are prevented from being blocked;
the water distribution channel I3 is positioned at the downstream of the anti-clogging regulating reservoir and is communicated with the anti-clogging regulating reservoir 2 through a pipeline so as to output the wastewater pretreated and regulated by the anti-clogging regulating reservoir;
the undercurrent wetland 4 is positioned at the downstream of the water distribution channel I and comprises an independent undercurrent wetland I41 and an independent undercurrent wetland II 42; the subsurface wetland 4 is communicated with the water distribution channel I3 through a water pipe to distribute water;
the water distribution channel II 5 is positioned at the downstream of the subsurface flow wetland and is connected with the water outlet of the subsurface flow wetland 4 through a pipeline;
the surface flow wetland 6 is positioned at the downstream of the water distribution channel II 5 and comprises an independent surface flow wetland I61 and an independent surface flow wetland II 62; the surface flow wetland 6 is communicated with the water distribution channel II 5 through a water pipe to distribute water;
the water outlet channel 7 is positioned at the downstream of the surface flow wetland and is connected with the water outlet of the surface flow wetland 6 through a pipeline;
an ecological buffer zone landscape 8 positioned at the downstream of the water outlet channel; which is communicated with a water outlet channel 7 through a pipeline; the ecological buffer zone landscape 8 is an amphibious vegetation zone.
In the technical scheme, the MBR effluent is input into a lift pump room and passes through an anti-blocking adjusting tank, a water distribution channel I, an underflow wetland, a water distribution channel II, a surface flow wetland, a water outlet channel and an ecological buffer zone landscape in sequence, so that the MBR effluent is reprocessed; the subsurface flow wetland and the surface flow wetland remove pollutants such as organic matters, suspended matters, nitrogen, phosphorus and the like in sewage through the processes of physical precipitation, filtration, chemical precipitation, adsorption, microbial degradation, vegetation absorption and the like, and the degradation process relates to various treatment mechanisms such as physical precipitation, filtration, chemical precipitation, adsorption, microbial degradation, vegetation absorption and the like; the construction of the ecological buffer zone landscape is one of the most effective methods for protecting water resources, and the ecological buffer zone landscape can filter and capture sediment substances and animal and plant debris in surface runoff and can capture pollutants in underground water and surface water.
In the technical scheme, the lift pump room is 6-8 m long, 3.5-4.5 m wide and 7.6-8.5 m high, wherein 2.5-3 m is located underground.
In the technical scheme, the water distribution channel I and the water distribution channel II are identical in structure, the main structure of the outer wall of the water distribution channel I and the main structure of the outer wall of the water distribution channel II are made of masonry, and water is distributed through 10-12 water passing pipes on the upper portion of the wall body of the water distribution channel I and the wall body of the water distribution channel II.
In the technical scheme, the species cultivated in the ecological buffer zone landscape are one or more of cattail mongolica, cattail euphorbia, grass alisma orientale, alopecurus, barnyard grass, flat-stalk grass and chenopodium album.
In the above technical solution, as shown in fig. 2, the anti-clogging regulating reservoir 2 includes: a conditioning tank body 21 having a space 22 for containing wastewater therein;
the filter screen 23 is arranged in the middle of the regulating tank body 21 through a support frame 24; one end of the support frame 24 is detachably connected with the filter screen 23; the other end is detachably connected with the upper end edge of the regulating tank body 21; the support frame 24 is detachably connected with the filter screen 23 by bolts; the support frame is detachably connected with the upper end of the regulating tank body in a hanging way through a bending piece 241;
a regulating reservoir cover 25 which covers the upper end of the regulating reservoir body 21; a stirring device is arranged on the regulating tank sealing cover 25; the stirring device comprises a driving device 26 positioned at the upper part of the regulating reservoir sealing cover, a stirring shaft 27 positioned at the lower part of the regulating reservoir sealing cover and an anchor stirrer 28 fixed on the stirring shaft; the driving device 26 is a stirring motor; the anchor stirrer 28 is positioned in the regulating reservoir body 21 and above the filter screen 23, the upper end of the regulating reservoir body 21 is provided with a water inlet 211, and the lower end is provided with a water outlet 212; adopt this kind of technical scheme, go out the MBR and go out water and input through the elevator pump room and prevent blockking up in the equalizing basin, go out water through agitating unit to the MBR and stir, the filter screen can filter the MBR and go out water, filters insoluble fixed material.
In the technical scheme, as shown in fig. 3, the main structure of the wall body of the subsurface flow wetland 4 is a masonry structure; a pool bottom zeolite packing layer 43 and a pool wall packing layer are respectively arranged on the pool bottom and the pool wall at the outlet side of the subsurface wetland, a waterproof layer 44 is arranged between the pool wall packing layer and the pool and is communicated with the pool bottom zeolite packing layer 43 through a bottom end overflow port 45 at the bottom of the pool bottom zeolite packing layer 43, and a water outlet 46 connected to a water distribution channel II is arranged at the top of the pool wall packing layer; an organic matter purification layer 47 and a gravel filler layer 48 are sequentially arranged on the zeolite filler 43 layer at the bottom of the pool; wetland plants 49 are planted on the gravel packing layer; the top of the subsurface flow wetland 4 is provided with a water distribution pipe 401 facing the gravel packing layer, and water outlet holes 402 are uniformly distributed on the water distribution pipe 401; the water distribution pipe 401 is connected with a water passing pipe to communicate the water distribution channel I; the tank wall packing layer is sequentially provided with a tank wall zeolite packing layer 403, a pathogenic microorganism adsorption layer 404 and a tank wall crushed stone packing layer 405 from bottom to top. The organic matter purification layer is diatomite, in the technical scheme, the wastewater passing through the anti-blocking adjusting tank flows into the subsurface wetland system through the water distribution pipe, the water distribution pipe is provided with a water outlet hole for uniformly distributing water, so that the wastewater can uniformly flow into the subsurface wetland system, the wastewater respectively passes through the crushed stone packing layer, the organic matter purification layer and the pool bottom zeolite packing layer from top to bottom, then enters the pool wall zeolite packing layer, the pathogenic microorganism adsorption layer and the pool wall crushed stone packing layer through the bottom overflow port, flows out of the water outlet 46, and pollutants such as organic matters, N, P, pathogenic microorganisms and the like in the wastewater are efficiently removed. The invention gradually removes pollutants through layered purification, thereby achieving the purpose of high-efficiency treatment.
In the technical scheme, the wetland plants on the subsurface flow wetland are one or more of rhizoma alismatis, reed, cattail and flos lonicerae; the ratio of the thickness of the zeolite filler layer at the bottom of the pool to the thickness of the organic matter purification layer is 1: 1-2; the ratio of the thickness of the organic matter purification layer to the thickness of the broken stone filler layer is 0.5-1: 1; the ratio of the thickness of the zeolite packing layer on the pool wall to the thickness of the pathogenic microorganism adsorption layer is 1: 2-3; the ratio of the thickness of the pathogenic microorganism adsorption layer to the thickness of the crushed stone packing layer on the pool wall is 1-2: 1; the pathogenic microorganism adsorption layer is composed of anthracite, diatomite, steel slag and attapulgite in a weight ratio of 1:2:1: 2. By adopting the mode, the thickness proportion of each layer is reasonably set through layered purification, pollutants are gradually removed, and the aim of high-efficiency treatment is fulfilled.
In the technical scheme, as shown in fig. 4, the main structure of the wall body of the surface flow wetland 6 is a masonry structure; the surface flow wetland is sequentially provided with a surface flow wetland zeolite packing layer 63 and a surface flow wetland crushed stone packing layer 64 from bottom to top; wetland plants 65 are planted on the surface flow wetland crushed stone packing layer 64; one end of the top of the surface flow wetland is provided with a water distribution pipe 66; the other end of the top of the surface flow wetland is provided with a water outlet pipe 67 which is communicated with the water distribution channel II through a water pipe.
In the technical scheme, the thickness ratio of the zeolite filler layer of the surface flow wetland to the gravel filler layer of the surface flow wetland is 4: 7; the wetland plants planted on the surface flow wetland crushed stone filler layer are one or more of reed, cattail and sedum rosea.
Example 2:
the constructed wetland system of the embodiment 1 of the invention is adopted to treat MBR effluent; inputting MBR effluent into a lift pump room, and sequentially passing through an anti-clogging regulating reservoir, a water distribution channel I, an underflow wetland, a water distribution channel II, a surface flow wetland, an effluent channel and an ecological buffer zone landscape to realize retreatment of the MBR effluent, wherein the retention time of MBR wastewater in an artificial wetland system is 12 h;
the length of the lift pump room is 6m, the width of the lift pump room is 3.5m, and the height of the lift pump room is 7.6m, wherein 2.5m is located underground;
the water distribution channel I and the water distribution channel II are identical in structure, the main structure of the outer wall of the water distribution channel I and the water distribution channel II is made of masonry, and water is distributed through 10 water passing pipes on the upper portion of the wall body of the water distribution channel I and the water distribution channel II;
the species cultivated in the ecological buffer zone landscape are cattail mongolica and rhizoma alismatis;
the structure of the anti-blocking adjusting tank adopts the structure in the embodiment 1;
the subsurface flow wetland and the surface flow wetland adopt the structure in the embodiment 1; wherein, the wetland plants on the subsurface flow wetland are rhizoma alismatis and reed; the ratio of the thickness of the zeolite filler layer at the bottom of the pool to the thickness of the organic matter purification layer is 1: 1; the ratio of the thickness of the organic matter purification layer to the thickness of the gravel packing layer is 1: 1; the ratio of the thickness of the zeolite packing layer on the pool wall to the thickness of the pathogenic microorganism adsorption layer is 1: 2; the ratio of the thickness of the pathogenic microorganism adsorption layer to the thickness of the crushed stone packing layer on the pool wall is 1: 1; the thickness ratio of the surface flow wetland zeolite packing layer to the surface flow wetland crushed stone packing layer is 4: 7; the wetland plants planted on the surface flow wetland crushed stone filler layer are reed and cattail; the pathogenic microorganism adsorption layer consists of anthracite, diatomite, steel slag and attapulgite in a weight ratio of 1:2:1: 2; the organic matter purification layer is diatomite;
MBR effluent water input into the constructed wetland system is detected, and effluent water quality is as follows: 80mg/L, BOD SS5＝8、CODcr＝40、NH3-N ═ 3, TP (total phosphorus) ═ 0.8; the concentration of influent virus (f2 phage) was 103～106pfu/ml range; the constructed wetland system through this embodiment goes out water to the MBR and handles, detects out water quality, and water quality goes out: 28mg/L, BOD SS5＝3、CODcr＝15、NH3-N ═ 0.8, TP (total phosphorus) ═ 0.3; the average removal rate of the system for the f2 phage was 99.65%.
Example 3:
the constructed wetland system of the embodiment 1 of the invention is adopted to treat MBR effluent; inputting MBR effluent into a lift pump room, and sequentially passing through an anti-clogging regulating reservoir, a water distribution channel I, an underflow wetland, a water distribution channel II, a surface flow wetland, an effluent channel and an ecological buffer zone landscape to realize retreatment of the MBR effluent; wherein the retention time of the MBR wastewater in the constructed wetland system is 12 h;
the length of the lift pump room is 6m, the width of the lift pump room is 3.5m, and the height of the lift pump room is 7.6m, wherein 2.5m is located underground;
the water distribution channel I and the water distribution channel II are identical in structure, the main structure of the outer wall of the water distribution channel I and the water distribution channel II is made of masonry, and water is distributed through 10 water passing pipes on the upper portion of the wall body of the water distribution channel I and the water distribution channel II;
the species cultivated in the ecological buffer zone landscape are cattail mongolica and rhizoma alismatis;
the structure of the anti-blocking adjusting tank adopts the structure in the embodiment 1;
the subsurface flow wetland and the surface flow wetland adopt the structure in the embodiment 1; wherein, the wetland plants on the subsurface flow wetland are rhizoma alismatis and reed; the ratio of the thickness of the zeolite filler layer at the bottom of the pool to the thickness of the organic matter purification layer is 1: 1; the ratio of the thickness of the organic matter purification layer to the thickness of the gravel packing layer is 1: 1; the ratio of the thickness of the zeolite packing layer on the pool wall to the thickness of the pathogenic microorganism adsorption layer is 1: 2; the ratio of the thickness of the pathogenic microorganism adsorption layer to the thickness of the crushed stone packing layer on the pool wall is 1: 1; the thickness ratio of the surface flow wetland zeolite packing layer to the surface flow wetland crushed stone packing layer is 4: 7; the wetland plants planted on the surface flow wetland crushed stone filler layer are reed and cattail; the pathogenic microorganism adsorption layer consists of anthracite, diatomite, steel slag and attapulgite in a weight ratio of 1:2:1: 2; the organic matter purification layer is modified diatomite, and the preparation method comprises the following steps: calcining diatomite at 250 deg.C for 1 hr, feeding the calcined diatomite into an atmospheric pressure low temperature plasma device to make the diatomite be 60mm at the jet outlet of the atmospheric pressure low temperature plasma, introducing gas into the atmospheric pressure low temperature plasma device according to the gas flow of 15L/h, applying working voltage to form plasma jet, controlling the moving speed of the jet outlet of the atmospheric pressure low temperature plasma device at 15mm/s to jet the plasma jet on the diatomite, treating the diatomite for 30min, adding 30 parts of the treated diatomite into a supercritical reaction device according to parts by weight, simultaneously adding 120 parts of chitosan solution with the mass fraction of 5%, stirring, then sealing the system, introducing carbon dioxide to 45MPa, reacting for 120min at the temperature of 60 ℃, relieving the pressure, and drying to obtain modified diatomite; the working voltage is provided by a high-voltage alternating current power supply, the working voltage is 100kV alternating current voltage, and the frequency is 300 kHz; the gas is the mixture of air and ammonia gas;
MBR effluent water input into the constructed wetland system is detected, and effluent water quality is as follows: 80mg/L, BOD SS5＝8、CODcr＝40、NH3-N ═ 3, TP (total phosphorus) ═ 0.8; the concentration of influent virus (f2 phage) was 103～106pfu/ml range; the constructed wetland system through this embodiment goes out water to the MBR and handles, detects out water quality, and water quality goes out: SS 20mg/L, BOD5＝1、CODcr＝8、NH3-N-0.3 and TP (total phosphorus) 0.1, with an average removal of f2 phage of 99.88%.
Example 4:
the constructed wetland system of the embodiment 1 of the invention is adopted to treat MBR effluent; inputting MBR effluent into a lift pump room, and sequentially passing through an anti-clogging regulating reservoir, a water distribution channel I, an underflow wetland, a water distribution channel II, a surface flow wetland, an effluent channel and an ecological buffer zone landscape to realize retreatment of the MBR effluent; wherein the retention time of the MBR wastewater in the constructed wetland system is 12 h;
the length of the lift pump room is 6m, the width of the lift pump room is 3.5m, and the height of the lift pump room is 7.6m, wherein 2.5m is located underground;
the water distribution channel I and the water distribution channel II are identical in structure, the main structure of the outer wall of the water distribution channel I and the water distribution channel II is made of masonry, and water is distributed through 10 water passing pipes on the upper portion of the wall body of the water distribution channel I and the water distribution channel II;
the species cultivated in the ecological buffer zone landscape are cattail mongolica and rhizoma alismatis;
the structure of the anti-blocking adjusting tank adopts the structure in the embodiment 1;
the subsurface flow wetland and the surface flow wetland adopt the structure in the embodiment 1; wherein, the wetland plants on the subsurface flow wetland are rhizoma alismatis and reed; the ratio of the thickness of the zeolite filler layer at the bottom of the pool to the thickness of the organic matter purification layer is 1: 1; the ratio of the thickness of the organic matter purification layer to the thickness of the gravel packing layer is 1: 1; the ratio of the thickness of the zeolite packing layer on the pool wall to the thickness of the pathogenic microorganism adsorption layer is 1: 2; the ratio of the thickness of the pathogenic microorganism adsorption layer to the thickness of the crushed stone packing layer on the pool wall is 1: 1; the thickness ratio of the surface flow wetland zeolite packing layer to the surface flow wetland crushed stone packing layer is 4: 7; the wetland plants planted on the surface flow wetland crushed stone filler layer are reed and cattail; the pathogenic microorganism adsorption layer consists of anthracite, diatomite, steel slag and attapulgite in a weight ratio of 1:2:1: 2; the organic matter purification layer is modified diatomite, and the preparation method comprises the following steps: calcining diatomite at 300 deg.C for 2 hr, feeding the calcined diatomite into an atmospheric pressure low temperature plasma device to make the diatomite be 50mm at the jet outlet of the atmospheric pressure low temperature plasma, introducing gas into the atmospheric pressure low temperature plasma device according to the gas flow of 12L/h, applying working voltage to form plasma jet, controlling the moving speed of the jet outlet of the atmospheric pressure low temperature plasma device at 10mm/s to jet the plasma jet on the diatomite, treating diatomite for 30min, adding 20 parts of treated diatomite into a supercritical reaction device according to parts by weight, simultaneously adding 100 parts of chitosan solution with the mass fraction of 3%, stirring, then sealing the system, introducing carbon dioxide to 35MPa, reacting for 90min at the temperature of 50 ℃, relieving the pressure, and drying to obtain modified diatomite; the working voltage is provided by a high-voltage alternating current power supply, the working voltage is 100kV alternating current voltage, and the frequency is 300 kHz; the gas is the mixture of air and ammonia gas;
MBR effluent water input into the constructed wetland system is detected, and effluent water quality is as follows: 80mg/L, BOD SS5＝8、CODcr＝40、NH3-N ═ 3, TP (total phosphorus) ═ 0.8; the concentration of influent virus (f2 phage) was 103～106pfu/ml range; the constructed wetland system through this embodiment goes out water to the MBR and handles, detects out water quality, and water quality goes out: SS 20mg/L, BOD5＝1、CODcr＝8、NH3-N ═ 0.3, TP (total phosphorus) ═ 0.1. The average removal rate of the system for the f2 phage was 99.91%.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (7)
1. The utility model provides an artificial wetland system that carries out retreatment to waste water after MBR is handled which characterized in that includes:
the lift pump house is of a semi-underground double-layer reinforced concrete structure; the lift pump room inputs wastewater treated by MBR;
the anti-blocking regulating tank is positioned at the downstream of the lifting pump room and is communicated with the lifting pump room through a pipeline; the anti-blocking adjusting tank is used for carrying out pretreatment adjustment on the wastewater treated by the MBR, so that solid impurities are reduced, and downstream pipelines and an artificial wetland system are prevented from being blocked;
the water distribution channel I is positioned at the downstream of the anti-clogging regulating tank and is communicated with the anti-clogging regulating tank through a pipeline so as to output the wastewater pretreated and regulated by the anti-clogging regulating tank;
the undercurrent wetland is positioned at the downstream of the water distribution channel I and comprises an independent undercurrent wetland I and an independent undercurrent wetland II; the subsurface flow wetland is communicated with the water distribution channel I through a water pipe to distribute water;
the water distribution channel II is positioned at the downstream of the subsurface flow wetland and is connected with a water outlet of the subsurface flow wetland through a pipeline;
the surface flow wetland is positioned at the downstream of the water distribution channel II and comprises an independent surface flow wetland I and an independent surface flow wetland II; the surface flow wetland is communicated with a water distribution channel II through a water pipe to distribute water;
the water outlet channel is positioned at the downstream of the surface flow wetland and is connected with the water outlet of the surface flow wetland through a pipeline;
an ecological buffer zone landscape positioned at the downstream of the water outlet channel; which is communicated with a water outlet channel through a pipeline; the ecological buffer zone landscape is an amphibious vegetation zone;
the main structure of the wall body of the subsurface flow wetland is a masonry structure; a pool bottom zeolite packing layer and a pool wall packing layer are respectively arranged on pool walls at the pool bottom and the outlet side of the subsurface wetland, a waterproof layer is arranged between the pool wall packing layer and the pool and is communicated with the pool bottom zeolite packing layer through a bottom overflow port at the bottom of the pool bottom zeolite packing layer, and a water outlet connected to a water distribution channel II is arranged at the top of the pool wall packing layer; the zeolite filler layer at the bottom of the pool is sequentially provided with an organic matter purification layer and a gravel filler layer; wetland plants are planted on the gravel packing layer; the top of the subsurface flow wetland is provided with a water distribution pipe facing the gravel packing layer, and water outlet holes are uniformly distributed on the water distribution pipe; the water distribution pipe is connected with a water passing pipe to communicate the water distribution channel I; the tank wall filler layer is sequentially provided with a tank wall zeolite filler layer, a pathogenic microorganism adsorption layer and a tank wall gravel filler layer from bottom to top; the organic matter purification layer is modified diatomite;
the wetland plants on the subsurface flow wetland are one or more of rhizoma alismatis, reed, cattail and sedum ramosissimum; the ratio of the thickness of the zeolite filler layer at the bottom of the pool to the thickness of the organic matter purification layer is 1: 1-2; the ratio of the thickness of the organic matter purification layer to the thickness of the broken stone filler layer is 0.5-1: 1; the ratio of the thickness of the zeolite packing layer on the pool wall to the thickness of the pathogenic microorganism adsorption layer is 1: 2-3; the ratio of the thickness of the pathogenic microorganism adsorption layer to the thickness of the crushed stone packing layer on the pool wall is 1-2: 1; the pathogenic microorganism adsorption layer consists of anthracite, diatomite, steel slag and attapulgite in a weight ratio of 1:2:1: 2;
the diatomite is replaced by modified diatomite, and the preparation method comprises the following steps: calcining kieselguhr at 250-350 ℃ for 1-3 h, then feeding the calcined kieselguhr into an atmospheric pressure low-temperature plasma device, enabling the kieselguhr to be positioned at a spraying outlet of the atmospheric pressure low-temperature plasma for 20-60 mm, introducing gas into the atmospheric pressure low-temperature plasma device according to the gas flow of 5-15L/h, applying working voltage to form plasma jet flow, controlling the moving speed of the spraying outlet of the atmospheric pressure low-temperature plasma device to be 5-15 mm/s, enabling the plasma jet flow to be sprayed on the kieselguhr, treating the kieselguhr for 30min, adding 10-30 parts of the treated kieselguhr into a supercritical reaction device according to parts by weight, simultaneously adding 80-120 parts of chitosan solution with the mass fraction of 2-5%, stirring, then sealing the system, introducing carbon dioxide to react for 60-120 min under the condition that the temperature is 40-60 ℃, releasing pressure and drying to obtain modified diatomite; the working voltage is provided by a high-voltage alternating current power supply, the working voltage is 35-100 kV alternating current voltage, and the frequency is 100-300 kHz; the gas is one or a mixture of more of air, oxygen, nitrogen and ammonia.
2. The constructed wetland system for reprocessing wastewater after MBR treatment of claim 1, wherein the lift pump room has a length of 6-8 m, a width of 3.5-4.5 m and a height of 7.6-8.5 m, and wherein 2.5-3 m is located underground.
3. The constructed wetland system for reprocessing wastewater after MBR treatment according to claim 1, wherein the water distribution channel I and the water distribution channel II have the same structure, the main structure of the outer wall of the water distribution channel I and the water distribution channel II is made of masonry, and the water distribution channel I and the water distribution channel II are distributed by 10-12 water passing pipes on the upper part of the wall body.
4. The constructed wetland system of claim 1 for reprocessing wastewater from MBR treatment, wherein the species from ecological buffer zone landscape cultivation is one or more of Typha Mongolica, Typha angustifolia, Alisma orientale, Aleurea amurensis, Echinochloa crusgalli and Pantyoca planifolia.
5. The constructed wetland system of claim 1 for reprocessing wastewater after MBR treatment, wherein the anti-clogging conditioning tank comprises:
a regulating tank body, the interior of which is provided with a space for accommodating waste water;
the filter screen is arranged in the middle of the regulating tank body through a support frame; one end of the support frame is detachably connected with the filter screen; the other end is detachably connected with the edge of the upper end of the regulating tank body;
the regulating reservoir sealing cover is covered at the upper end of the regulating reservoir body; a stirring device is arranged on the regulating tank sealing cover; the stirring device comprises a driving device positioned at the upper part of the regulating reservoir sealing cover, a stirring shaft positioned at the lower part of the regulating reservoir sealing cover and an anchor stirrer fixed on the stirring shaft; the driving device is a stirring motor; the anchor agitator is located the equalizing basin body and is located the top of filter screen.
6. The constructed wetland system for reprocessing wastewater after MBR treatment according to claim 1, wherein the main wall structure of the surface flow wetland is a masonry structure; the surface flow wetland is sequentially provided with a surface flow wetland zeolite filler layer and a surface flow wetland crushed stone filler layer from bottom to top; wetland plants are planted on the surface flow wetland crushed stone filler layer; one end of the top of the surface flow wetland is provided with a water distribution pipe; the other end of the top of the surface flow wetland is provided with a water outlet pipe; the water distribution pipe is communicated with the water distribution channel II through a water passing pipe.
7. The constructed wetland system for reprocessing wastewater after MBR treatment of claim 1, wherein the thickness ratio of the zeolite packing layer to the crushed stone packing layer is 4: 7; the wetland plants planted on the surface flow wetland crushed stone filler layer are one or more of reed, cattail and sedum rosea.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060108804A (en) * | 2005-04-14 | 2006-10-18 | 창원대학교 산학협력단 | Sewage treatment system made by artificial reediness |
| CN202594913U (en) * | 2011-12-29 | 2012-12-12 | 广西大学 | Turn back flow type landscape composite artificial wetland sewage treatment system |
| KR101303525B1 (en) * | 2013-03-07 | 2013-09-03 | 순천대학교 산학협력단 | A livestock wastewater treatment system using constructed wetlands |
| CN204281416U (en) * | 2014-11-05 | 2015-04-22 | 沃邦（天津）科技有限公司 | A kind of artificial wet land system for marine culture wastewater process |
| CN108191122A (en) * | 2018-03-16 | 2018-06-22 | 郑州龙威电气安装有限公司 | A kind of environmental protection equipment for sewage disposal |
-
2018
- 2018-07-23 CN CN201810810720.2A patent/CN108862615B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060108804A (en) * | 2005-04-14 | 2006-10-18 | 창원대학교 산학협력단 | Sewage treatment system made by artificial reediness |
| CN202594913U (en) * | 2011-12-29 | 2012-12-12 | 广西大学 | Turn back flow type landscape composite artificial wetland sewage treatment system |
| KR101303525B1 (en) * | 2013-03-07 | 2013-09-03 | 순천대학교 산학협력단 | A livestock wastewater treatment system using constructed wetlands |
| CN204281416U (en) * | 2014-11-05 | 2015-04-22 | 沃邦（天津）科技有限公司 | A kind of artificial wet land system for marine culture wastewater process |
| CN108191122A (en) * | 2018-03-16 | 2018-06-22 | 郑州龙威电气安装有限公司 | A kind of environmental protection equipment for sewage disposal |
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