CN111392967A - Sewage treatment system of garbage disposal station - Google Patents

Sewage treatment system of garbage disposal station Download PDF

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Publication number
CN111392967A
CN111392967A CN202010220407.0A CN202010220407A CN111392967A CN 111392967 A CN111392967 A CN 111392967A CN 202010220407 A CN202010220407 A CN 202010220407A CN 111392967 A CN111392967 A CN 111392967A
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CN
China
Prior art keywords
sewage
filter material
pond
contact oxidation
volcanic rock
Prior art date
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Pending
Application number
CN202010220407.0A
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Chinese (zh)
Inventor
石健水
朱正荣
黄赣闽
刘海荣
郑遂军
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SHANGHAI CHENGTOU YINGZHOU DOMESTIC GARBAGE DISPOSAL CO Ltd
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SHANGHAI CHENGTOU YINGZHOU DOMESTIC GARBAGE DISPOSAL CO Ltd
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Priority to CN202010220407.0A priority Critical patent/CN111392967A/en
Publication of CN111392967A publication Critical patent/CN111392967A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F2001/007Processes including a sedimentation step
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00Apparatus for treatment of water, waste water or sewage
    • C02F2201/009Apparatus with independent power supply, e.g. solar cells, windpower, fuel cells
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/28Anaerobic digestion processes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/32Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/34Biological treatment of water, waste water, or sewage characterised by the microorganisms used

Abstract

The invention discloses a sewage treatment system of a garbage treatment station, and relates to the technical field of sewage treatment of garbage treatment stations. The system is characterized by comprising a grating tank, a grit chamber, a hydrolysis acidification tank, a volcanic rock facultative filter material channel, a contact oxidation tank and an artificial wetland, wherein the grating tank is used for intercepting and removing larger-volume suspended matters and floating matters in the collected sewage of the garbage treatment station, the grit chamber is used for precipitating residual silt and residues in the sewage, the hydrolysis acidification tank is used for converting biodegradable organic matters in the sewage into easily biodegradable organic matters, the volcanic rock facultative filter material channel is used for filtering and intercepting SS, the contact oxidation tank is used for oxidizing and decomposing microorganisms in the sewage, and the artificial wetland is used for purifying the sewage; the invention can combine the advantages of the domestic sewage purification methane tank and the artificial wetland sewage treatment technology.

Description

Sewage treatment system of garbage disposal station
Technical Field
The invention relates to the technical field of sewage treatment of garbage treatment stations, in particular to a sewage treatment system of a garbage treatment station.
Background
Urbanization, also called urbanization, refers to the historical process of gradual transformation of the society from the traditional rural society mainly based on agriculture to the modern urban society mainly based on non-agricultural industries such as industry (second industry) and service industry (third industry) along with the development of social productivity, scientific and technical progress and adjustment of industrial structure in a country or region, along with the rapid development of urbanization in China, urban domestic garbage increases, and if the urban domestic garbage cannot be properly treated, the urban living environment is easily damaged, so that garbage disposal stations can be built at a plurality of positions in a city to ensure the timely, effective and environment-friendly rapid disposal of the urban domestic garbage.
However, since general garbage disposal stations generally use landfill, incineration, and biological fermentation, and a large amount of domestic sewage is generated in the above-mentioned various disposal methods, and the domestic sewage cannot be disposed of by the general garbage disposal method, it is urgently necessary to dispose of the domestic sewage remaining in the operation of the garbage disposal stations.
In the prior art, the urban domestic sewage is generally treated by adopting a domestic sewage purification methane tank or an artificial wetland domestic sewage treatment technology; the domestic sewage purification methane tank adopts a method combining an anaerobic fermentation technology and a facultative biological filtration technology, decomposes and converts organic matters in the domestic sewage into CH4, CO2 and water under the anaerobic and facultative anaerobic conditions, and achieves the purpose of purifying and treating the domestic sewage, and the treatment process comprises the following steps: domestic sewage → grid tank → pretreatment area [ primary anaerobic fermentation, secondary anaerobic fermentation (biofilm formation) ] → post-treatment area (facultative biological filter) → discharge; the domestic sewage methane purifying tank is popularized in most regions in China, and has the advantages that: the system has the advantages of no power consumption, stable operation, simple and convenient management, less residual sludge, energy (methane) recovery, greenness and no land occupation; the artificial wetland domestic sewage treatment technology is characterized in that through simulating and strengthening the function of a natural wetland, sewage is controllably distributed on a soil (filler) which is often in a saturated state and on which aquatic plants such as reeds, cattail and the like grow, in the process that the sewage flows along a certain direction, organic matters in the sewage are filtered, intercepted by root systems, adsorbed and absorbed under the triple synergistic action of physics, chemistry and biology of water-resistant plants and soil (filler), and the decomposition of facultative microorganisms is promoted to realize the efficient purification of the sewage.
However, the domestic sewage purification methane tank has the advantages of sufficient pretreatment anaerobic fermentation, high organic matter removal efficiency and obvious biological filtration effect of the post-treatment facultative filter. The main problem is that the removal effect on suspended matters, ammonia nitrogen and phosphorus is poor; the artificial wetland sewage treatment technology has the defects that the requirement for water inlet is high, large-particle impurities in domestic sewage must be removed firstly by pretreatment, the blockage of wetland filter materials is avoided, the ammonia nitrogen and phosphorus removal effect of the artificial wetland is very good, the water is filtered by reasonably adjusting the particle size grading of the filler, and the suspended matters reach the standard. The two technologies can make up for the deficiency in the aspect of treating the domestic sewage, and if the two technologies are organically combined, the treatment effect is very good.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention aims to provide a sewage treatment system of a garbage treatment station, which has the effect of combining the technical advantages of a domestic sewage purification methane tank and artificial wetland sewage treatment.
In order to achieve the purpose, the invention provides the following technical scheme: a waste treatment station sewage treatment system comprising:
the grid pool is communicated with a factory drainage pipeline and is used for intercepting and removing large-volume suspended matters and floating matters in the collected sewage of the garbage treatment station;
a water inlet of the grit chamber is communicated with a water outlet of the grid tank so as to be used for precipitating residual silt and residues in the sewage;
a water inlet of the hydrolysis acidification tank is communicated with a water outlet of the grit chamber so as to convert biodegradable organic matters in the sewage into easily biodegradable organic matters, so that the biodegradability of the wastewater is improved, and the subsequent sewage treatment is facilitated;
the water inlet of the contact oxidation tank is communicated with the water outlet of the hydrolysis acidification tank so as to be used for oxidizing and decomposing microorganisms in the sewage, organic matters are oxidized and decomposed by the microorganisms under the aerobic condition, and the wastewater is purified;
the artificial wetland is communicated with the water outlet end of the volcanic rock facultative filter material channel of the contact oxidation pond so as to purify sewage;
the filter material channel is arranged between the hydrolysis acidification tank and the artificial wetland and is used for filtering and intercepting SS in sewage.
By adopting the technical scheme, the domestic sewage is collected through the drainage pipe network and is intercepted by the grating tank for larger particles and floating objects; the sewage enters a grit chamber to further precipitate the residues and then enters a hydrolysis acidification tank, anaerobic bacteria convert refractory substances into easily degradable organic acids, organic alcohols and other substances in the hydrolysis acidification tank, and the effluent of the hydrolysis acidification tank automatically flows into a contact oxidation tank; the aerobic microorganisms in the contact oxidation pond can decompose organic matters in the wastewater into CO2 and H2O under the aeration and oxygenation states; the sewage finally flows into the artificial wetland, and the artificial wetland realizes the high-efficiency purification of the sewage by simulating and strengthening the functions of the natural wetland and promoting the decomposition of facultative microorganisms; the volcanic rock facultative filter material is loose and porous, SS can be intercepted, the volcanic rock facultative filter material can be used as a novel biofilm carrier, and facultative microorganisms further reduce COD, ammonia nitrogen and the like during growth.
The invention is further configured to: the grid pond, the grit chamber, the hydrolysis acidification tank, the vesuvianite facultative filter material channel, the contact oxidation tank and the constructed wetland are arranged on a mountain slope or a pond slope.
By adopting the technical scheme, the industrial sewage treatment system is provided with a plurality of mountain side slopes and river pond side slopes, and the sewage treatment system can occupy no or less fertile farmlands when being built on the mountain side slopes and the river pond side slopes.
The invention is further configured to: the volcanic rock facultative filter material channel is arranged between the hydrolysis acidification tank and the contact oxidation tank, and the grating tank, the grit chamber, the hydrolysis acidification tank, the volcanic rock facultative filter material channel, the contact oxidation tank and the constructed wetland are arranged in a ladder shape from top to bottom along the mountain side slope or the pond side slope.
Through adopting above-mentioned technical scheme, the sewage that flows in from the hydrolysis-acidification tank can collide with the volcanic facultative filter material mode in the volcanic facultative filter material ditch when flowing in the volcanic facultative filter material ditch, the contact, make sewage can contact with the air regime, reach the effect of carrying out the pre-oxidation to sewage, and can carry out biological biofilm formation and filterable effect to sewage, the residual large granule impurity that sewage contained in the hydrolysis-acidification tank is avoided directly falling into the contact oxidation pond, utilize the topography advantage among the sewage treatment process, can adopt the mode of overflow to realize the automatic transport work of sewage between each process, utilize sewage discharge's water head potential energy, need not power promotion, reduce the operation energy consumption.
The invention is further configured to: the volcanic rock facultative filter material channel is arranged between the hydrolysis acidification tank and the contact oxidation tank, and the grating tank, the grit chamber, the hydrolysis acidification tank, the volcanic rock facultative filter material channel, the contact oxidation tank and the constructed wetland are arranged in a ladder shape from top to bottom along the mountain side slope or the pond side slope.
Through adopting above-mentioned technical scheme, the sewage that flows from the contact oxidation pond can collide with the volcanic rock facultative filter material mode in the volcanic rock facultative filter material canal when flowing in the volcanic rock facultative filter material canal, the contact, make sewage can further obtain the effect of oxidative decomposition, and can carry out biological biofilm formation and filterable effect to sewage, the residual large granule impurity that sewage contained in the hydrolytic acidification pond is avoided directly falling into the contact oxidation pond, utilize the topography advantage among the sewage treatment process, can adopt the mode of overflow to realize the automatic transport work of sewage between each process, utilize sewage discharge's water head potential energy, need not power promotion, reduce the operation energy consumption.
The invention is further configured to: the volcanic rock facultative filter material canal is provided with two sections and is respectively arranged between the hydrolysis acidification tank and the contact oxidation tank and between the contact oxidation tank and the constructed wetland, and the grid pond, the grit chamber, the hydrolysis acidification tank, the volcanic rock facultative filter material canal, the contact oxidation tank, the volcanic rock facultative filter material canal and the constructed wetland are arranged along the mountain side slope or the pond side slope from top to bottom in a ladder shape.
Through adopting above-mentioned technical scheme, utilize the volcanic rock facultative filter material canal that is in between hydrolysis-acidification pool and the contact oxidation pond to carry out the pre-oxidation to the sewage that flows in the contact oxidation pond, utilize the volcanic rock facultative filter material canal that is in between contact oxidation pond and the constructed wetland to carry out the secondary oxidation to the sewage that flows out the contact oxidation pond outside.
The invention is further configured to: the solar cell catalytic oxidation device is characterized by further comprising a nano aeration device, wherein the nano aeration device comprises an air compressor, a nano aeration pipe matched with the air compressor and a solar cell electrically connected with the air compressor, and the nano aeration pipe is arranged in the contact oxidation tank.
Through adopting above-mentioned technical scheme, utilize solar cell can change the sunlight into the electric energy for the air compressor machine power supply, utilize air compressor machine and nanometer aeration pipe can be to the inside aeration of contact oxidation pond.
The invention is further configured to: the device also comprises a dissolved oxygen instrument arranged in the contact oxidation pond, and the dissolved oxygen instrument is in control connection with an air compressor.
Through adopting above-mentioned technical scheme, utilize dissolved oxygen appearance to detect the content of the oxygen in the sewage in the contact oxidation pond, when sewage oxygen content was low excessively in the contact oxidation pond, utilize dissolved oxygen appearance control air compressor machine work in order to carry out the aeration to the contact oxidation pond, when sewage oxygen content was higher in the contact oxidation pond, utilize dissolved oxygen appearance control air compressor machine to close in order to the energy can be saved.
The invention is further configured to: the device is characterized by further comprising a sludge gas stripping device electrically connected with the solar cell, wherein a sludge inlet of the sludge gas stripping device extends to the bottom of the contact oxidation tank, and a sludge outlet of the sludge gas stripping device is communicated with the hydrolysis acidification tank.
Through adopting above-mentioned technical scheme, the organic matter in the sewage is carried out oxidative decomposition and will remain some flocculation thing and subside in contact oxidation pond bottom, utilizes the residue behind the mud gas stripping device can decompose to promote to continue the hydrolysis in the hydrolysis acidification pond, promotes the purifying effect of sewage.
The invention is further configured to: the volcanic rock facultative filter material channel is arranged on the slope surface of the mountain slope or the pond slope, and the length direction of the volcanic rock facultative filter material channel is arranged along the slope direction of the mountain slope or the pond slope, a plurality of interception plates arranged along the length direction of the volcanic rock facultative filter material channel are arranged in the volcanic rock facultative filter material channel, and the volcanic rock facultative filter material is filled in the included angle area between each interception plate and the volcanic rock facultative filter material channel.
Through adopting above-mentioned technical scheme, utilize to block the board and can intercept the volcanic rock facultative filter material for the volcanic rock facultative filter material can be covered with volcanic rock facultative filter material canal and can not be washed away by sewage and walk.
The invention is further configured to: the substrate of the artificial wetland comprises an impermeable layer, a drainage layer, a transition layer, a filter layer and a surface layer from bottom to top in sequence.
Through adopting above-mentioned technical scheme, utilize the barrier layer to prevent sewage infiltration groundwater, utilize the drainage blanket to collect the discharge in order to handle sewage, utilize the transition layer to prevent that upper sand from blockking up drainage blanket below, utilize the filter layer to carry out filtration purification to sewage, utilize the top layer to prevent that the filtering ponds surface from being eroded.
Compared with the prior art, the invention has the beneficial effects that:
(1) the process adopts biochemistry, volcanic rock facultative filtration and artificial wetland, and combines various treatment methods, so that the effluent quality is improved, and the effluent is more stable;
(2) in the sewage treatment process, the topographic advantages are utilized, the potential energy of the water level difference of sewage discharge is utilized, power lifting is not needed, and the operation energy consumption is reduced;
(3) the artificial wetland is arranged on a mountain slope and a pond slope, is combined with the artificial wetland, can be fused with the surrounding environment, and can be used for planting ornamental plants to form a landscape, thereby achieving multiple purposes.
Drawings
FIG. 1 is a schematic structural diagram of the first embodiment;
FIG. 2 is a schematic structural view of the nano-aeration apparatus according to the first embodiment;
FIG. 3 is a partially enlarged schematic view of A of FIG. 1;
fig. 4 is a schematic layer structure diagram of the wetland of the first embodiment;
FIG. 5 is a schematic structural diagram of the second embodiment;
fig. 6 is a schematic structural diagram of the third embodiment.
Reference numerals: 1. a grid tank; 2. a grit chamber; 3. a hydrolysis acidification pool; 4. volcanic rock facultative filter material channels; 41. a interception plate; 5. a contact oxidation pond; 6. artificial wetland; 61. an impermeable layer; 62. a drainage layer; 63. a transition layer; 64. a filter layer; 65. a surface layer; 7. a nano aeration device; 71. a solar cell; 72. an air compressor; 73. a nano aeration pipe; 74. a dissolved oxygen instrument; 8. a sludge gas stripping device.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
The first embodiment is as follows: a sewage treatment system of a garbage treatment station comprises a grid pool 1 for intercepting and removing larger-volume suspended matters and floating matters in collected sewage of the garbage treatment station, a grit chamber 2 for precipitating residual silt and residues in the sewage, a hydrolysis acidification pool 3 for converting biodegradable organic matters in the sewage into biodegradable organic matters, a volcanic rock facultative filter material channel 4 for filtering and intercepting SS, a contact oxidation pool 5 for oxidizing and decomposing microorganisms in the sewage and an artificial wetland 6 for purifying the sewage, wherein the grid pool 1 is used for intercepting and removing the larger-volume suspended matters and floating matters in the collected sewage of the garbage treatment station; the grid pond 1 is communicated with a plurality of industrial drainage pipelines through underground mesh pipelines, and two processes which are randomly and adjacently arranged adopt an overflow or pumping mode to carry out sewage conveying work.
Wherein, the grid pond 1, the grit chamber 2, the hydrolysis acidification pond 3, the vesuvianite facultative filter material channel 4, the contact oxidation pond 5 and the artificial wetland 6 are arranged on a mountain slope or a pond slope; the grid pond 1, the grit chamber 2 and the hydrolysis acidification pond 3 are arranged on the slope top of a mountain slope or a pond slope, the contact oxidation pond 5 and the constructed wetland 6 are arranged at the slope bottom of the mountain slope or the pond slope, the volcanic rock facultative filter material channel 4 is arranged on the slope of the mountain slope or the pond slope, the upper end and the lower end of the volcanic rock facultative filter material channel are respectively communicated with the hydrolysis acidification pond 3 and the contact oxidation pond 5, and the grid pond 1, the grit chamber 2, the hydrolysis acidification pond 3, the volcanic rock facultative filter material channel 4, the contact oxidation pond 5 and the constructed wetland 6 are arranged in a ladder shape from top to bottom.
As shown in fig. 1 and fig. 2, the system further includes a nano aeration device 7 for aerating and supplying oxygen to the sewage in the contact oxidation pond 5, wherein the nano aeration device 7 includes a solar cell 71 disposed outside the contact oxidation pond 5 for generating electric energy, an air compressor 72 disposed outside the contact oxidation pond 5 and electrically connected to the solar cell 71 for providing air, a nano aeration pipe 73 fitted with the air compressor 72 and installed in the contact oxidation pond 5 for blowing the compressed air generated by the air compressor 72 into the sewage, and a dissolved oxygen meter 74 disposed in the contact oxidation pond 5 and controllably connected to the air compressor 72 for controlling the operation of the air compressor 72.
Wherein, the air compressor 72 mainly works when the oxygen content of the sewage in the contact oxidation pond 5 is low, and only when the contact oxidation pond 5 needs aeration oxygen supply, the power consumption is consumed, and although the dissolved oxygen meter 74 works all day long, the power consumption of the dissolved oxygen meter 74 is low, so the whole power consumption is low, and the normal working requirement of the nano aeration device 7 can be ensured by using a small amount of solar cells 71 for combined power supply.
As shown in fig. 1 and fig. 2, the device further comprises a sludge stripping device 8 electrically connected with the solar cell 71 for conveying flocculates after oxidative decomposition in the contact oxidation tank 5 to the hydrolysis acidification tank 3 for hydrolysis and reuse; wherein, the bottom of the contact oxidation pond 5 is arranged in a cone shape with a big top and a small bottom, the sludge inlet of the sludge gas stripping device 8 extends into the bottom of the cone-shaped contact oxidation pond 5, and the sludge outlet of the sludge gas stripping device 8 extends to the upper end of the hydrolysis acidification pond 3 so that flocculates falling from the sludge gas stripping device 8 can fall into the hydrolysis acidification pond 3.
As shown in fig. 3, the vesuvianite facultative filter material channel 4 is obliquely arranged, and the upper end and the lower end of the channel are upward; wherein, be provided with a plurality of blocks 41 of arranging along the length direction of volcanic rock facultative filter material canal 4 in the volcanic rock facultative filter material canal 4, volcanic rock facultative filter material is filled in each block 41 and the contained angle region between volcanic rock facultative filter material canal 4.
As shown in fig. 4, the substrate of the artificial wetland 6 comprises a seepage-proofing layer 61 for preventing sewage from infiltrating into underground water, a drainage layer 62 for collecting and draining sewage for treating sewage, a transition layer 63 for preventing upper sand from blocking the lower drainage layer 62, a filter layer 64 for performing biochemical treatment on the sewage in the artificial wetland 6 and a surface erosion surface layer 65 for preventing sand and gravel from being eroded in sequence from bottom to top; wherein, the artificial wetland 6 with different matrixes has different purification effects, the sewage which is characterized by P is preferably selected from fly ash and shale as matrixes, the sewage which is characterized by organic pollutants and suspended matters is selected from one or more of soil, fine sand and gravel as matrixes.
Specifically, the impermeable layer 61 is set to be 1mm of PE film double-sided geotextile; the thickness of the drainage layer 62 is 20cm, and the filler of the drainage layer 62 is gravel with the grain diameter of 15 mm; the thickness of the transition layer 63 is 10cm, and the filler of the transition layer 63 is gravel with the particle size of 10 mm; the thickness of the filter layer 64 is 50cm, and the filler of the filter layer 64 is 6mm mud-free coarse sand; the thickness of the surface layer 65 was 10cm, and the filler of the surface layer 65 was gravel having a particle size of 10 mm.
Wherein, reeds are planted on the artificial wetland 6, and animals such as fish, loaches, frogs and the like are put in the artificial wetland 6.
Example two: as shown in fig. 5, the difference from the first embodiment is that a volcanic rock facultative filter material channel 4 is disposed between a contact oxidation pond 5 and an artificial wetland 6, specifically, a grid pond 1, a grit chamber 2, a hydrolysis acidification pond 3 and a contact oxidation pond 5 are all disposed on the top of a mountain slope or a pond slope, an artificial wetland 6 is disposed at the bottom of the mountain slope or the pond slope, the volcanic rock facultative filter material channel 4 is disposed on the slope of the mountain slope or the pond slope, and the upper and lower ends of the volcanic rock facultative filter material channel are respectively communicated with the contact oxidation pond 5 and the artificial wetland 6, and the grid pond 1, the grit chamber 2, the hydrolysis acidification pond 3, the volcanic rock facultative filter material channel 4, the contact oxidation pond 5 and the artificial wetland 6 are arranged in a step shape from top to bottom.
Compared with the first embodiment, in the second embodiment, the sewage flowing from the hydrolysis acidification tank 3 to the contact oxidation tank 5 still has larger peculiar smell and more impurities, and the peculiar smell and the impurities of the sewage after being oxidized by the contact oxidation tank 5 are less, so that when the sewage is subjected to a series of functions of filtering, purifying, biofilm formation and the like in the volcanic rock facultative filter material channel 4, more peculiar smell and impurities cannot flow in the volcanic rock facultative filter material channel 4; however, in the second embodiment, when construction is performed, the hydrolysis acidification tank 3 and the contact oxidation tank 5 need to be constructed in sequence, and both constructions are performed on the slope tops of the mountain slopes or the pond slopes, so that the workload is high, and the construction time is long.
In the first embodiment, when the sewage flows from the hydrolysis acidification tank 3 to the contact oxidation tank 5, a large peculiar smell and many impurities still exist, at this time, when the sewage flows in the volcanic rock facultative filter material channel 4, a large peculiar smell is generated on the volcanic rock facultative filter material channel 4, and the normal use of the volcanic rock facultative filter material channel 4 can be ensured only by washing with rainwater or clean water; however, in the first embodiment, during construction, because the hydrolysis acidification tank 3 and the contact oxidation tank 5 are respectively positioned at the top and the bottom of a mountain slope or a pond slope, and are separated by the volcanic rock facultative filter material channel 4, the hydrolysis acidification tank 3 and the contact oxidation tank 5 can be constructed at the same time to accelerate the process.
In the third embodiment, as shown in fig. 6, the difference from the first and second embodiments is that the volcanic rock facultative filter material channel 4 is provided with two sections, which are respectively arranged between the hydrolysis acidification tank 3 and the contact oxidation tank 5 and between the contact oxidation tank 5 and the artificial wetland 6, and the contact oxidation tank 5 is arranged at a place with a gentle uphill form on a mountain slope or a river pond slope.
Compared with the first embodiment and the second embodiment, the third embodiment has the advantages of the first embodiment and the second embodiment, in the third embodiment, although the volcanic rock facultative filter material channel 4 between the hydrolysis-acidification tank 3 and the contact oxidation tank 5 can generate peculiar smell, because the length of the section of the volcanic rock facultative filter material channel 4 is shorter than that of the volcanic rock facultative filter material channel 4 in the first embodiment, the washing can be performed by using a small amount of clean water, and the waste of water resources is less; in addition, in the third embodiment, during construction, when the hydrolysis acidification tank 3 and the contact oxidation tank 5 are respectively located at the top and the side of a mountain slope or a pond side slope, and the middle of the hydrolysis acidification tank 3 and the contact oxidation tank 5 is separated by the volcanic rock facultative filter material channel 4, the hydrolysis acidification tank 3 and the contact oxidation tank 5 can be simultaneously constructed to accelerate the process, but when the contact oxidation tank 5 is located on the slope surface of the mountain slope or the pond side slope, the contact oxidation tank needs to be selected to be constructed in a place with a relatively slow slope to ensure the construction safety and avoid the excessive construction difficulty.
Compared with the first embodiment, the second embodiment and the third embodiment also have the effect of shortening the delivery stroke of the sludge stripping device 8, so that the working strength of the sludge stripping device 8 can be properly reduced, and the maintenance of the sludge stripping device 8 is facilitated.
The working process and the beneficial effects of the invention are as follows:
1. after larger particles and floating objects are intercepted by the middle and thin artificial fixed gratings after the domestic wastewater is collected by the drainage pipe network, the domestic wastewater enters the grit chamber 2 to further precipitate residues and then enters the hydrolysis acidification tank 3;
2. anaerobic bacteria in a hydrolysis acidification pool 3 convert difficultly-degradable substances into easily-degradable organic acid, organic alcohol and other substances, effluent of the hydrolysis acidification pool 3 automatically flows into a contact oxidation pool 5, aerobic microorganisms in the contact oxidation pool 5 can decompose organic substances in wastewater into CO2 and H2O in an aeration and oxygenation state, and the contact oxidation pool 5 is aerated by using an air compressor 72 through a solar cell 71 plate installed in a sewage treatment station;
3. the volcanic rock facultative filter material channel 4 is utilized to filter sewage, the filter material of the volcanic rock facultative filter material channel 4 is composed of loose and porous volcanic rocks, SS can be intercepted, the filter material can be used as novel biofilm-forming filler, and facultative microorganisms grow on the filter material to further reduce COD, ammonia nitrogen and the like;
4. the sewage finally flows into the artificial wetland 6, the artificial wetland 6 controllably delivers the sewage to the soil (filler) which is often in a saturated state and on which aquatic plants such as reeds, cattail and the like grow through simulating and strengthening the natural wetland function, in the process that the sewage flows along a certain direction, under the physical, chemical and biological triple synergistic action of water-resistant plants and soil (filler), organic matters in the sewage are filtered, intercepted by root systems, adsorbed, absorbed, photosynthesized by plants and oxygen transported, so that the facultative microbial decomposition is promoted to realize the efficient purification of the sewage, and the wastewater is discharged after reaching the standard after being treated by the artificial wetland 6.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims (10)

1. A sewage treatment system of a garbage disposal station, comprising:
the device comprises a grid pool (1), wherein the grid pool (1) is communicated with a factory drainage pipeline and is used for intercepting and removing large-volume suspended matters and floating matters in collected sewage of the garbage treatment station;
a water inlet of the grit chamber (2) is communicated with a water outlet of the grid tank (1) so as to precipitate residual silt and residues in the sewage;
a water inlet of the hydrolysis acidification tank (3) is communicated with a water outlet of the grit chamber (2) so as to convert biodegradable organic matters in the sewage into easily biodegradable organic matters, improve the biodegradability of the wastewater and facilitate subsequent sewage treatment;
the water inlet of the contact oxidation tank (5) is communicated with the water outlet of the hydrolysis acidification tank (3) so as to be used for oxidizing and decomposing microorganisms in the sewage, organic matters are oxidized and decomposed by the microorganisms under the aerobic condition, and the wastewater is purified;
the artificial wetland (6) is communicated with the water outlet end of the volcanic rock facultative filter material channel (4) of the contact oxidation pond (5) so as to purify sewage;
the filter material device is characterized by further comprising a volcanic rock facultative filter material channel (4), wherein the volcanic rock facultative filter material channel (4) is arranged between the hydrolysis acidification tank (3) and the artificial wetland (6) and is used for filtering and intercepting SS in sewage.
2. The waste water treatment system of claim 1, wherein: the device comprises a grid pond (1), a grit chamber (2), a hydrolysis acidification pond (3), a vesuvianite facultative filter material channel (4), a contact oxidation pond (5) and an artificial wetland (6), wherein the grid pond, the grit chamber, the vesuvianite facultative filter material channel and the artificial wetland are arranged on a mountain side slope or a pond side slope.
3. The waste water treatment system of claim 2, wherein: volcanic rock facultative filter material canal (4) sets up between hydrolysis-acidification tank (3) and contact oxidation pond (5), grid pond (1), grit chamber (2), hydrolysis-acidification tank (3), volcanic rock facultative filter material canal (4), contact oxidation pond (5) and constructed wetland (6) are arranged the setting along mountain region side slope or river pond side slope from last to being the echelonment down.
4. The waste water treatment system of claim 2, wherein: volcanic rock facultative filter material canal (4) sets up between contact oxidation pond (5) and constructed wetland (6), grid pond (1), grit chamber (2), hydrolysis-acidification tank (3), contact oxidation pond (5), volcanic rock facultative filter material canal (4) and constructed wetland (6) are arranged the setting along mountain region side slope or river pond side slope from last to being the echelonment down.
5. The waste water treatment system of claim 2, wherein: volcanic rock facultative filter material canal (4) are provided with two sections and set up respectively between hydrolysis-acidification tank (3) and contact oxidation pond (5) and between contact oxidation pond (5) and constructed wetland (6), grid pond (1), grit chamber (2), hydrolysis-acidification tank (3), volcanic rock facultative filter material canal (4), contact oxidation pond (5), volcanic rock facultative filter material canal (4) and constructed wetland (6) are arranged from last to being echelonment down along mountain side slope or river pond side slope and are set up.
6. The waste water treatment system of claim 1, wherein: the device is characterized by further comprising a nano aeration device (7), wherein the nano aeration device (7) comprises an air compressor (72), a nano aeration pipe (73) matched with the air compressor (72) and a solar cell (71) electrically connected with the air compressor (72), and the nano aeration pipe (73) is arranged in the contact oxidation tank (5).
7. The waste water treatment system of claim 6, wherein: the device is characterized by further comprising a dissolved oxygen meter (74) which is arranged in the contact oxidation pond (5) and is electrically connected with the solar cell (71), wherein the dissolved oxygen meter (74) is in control connection with an air compressor (72).
8. The waste water treatment system of claim 6, wherein: the device is characterized by further comprising a sludge gas stripping device (8) electrically connected with the solar cell (71), wherein a sludge inlet of the sludge gas stripping device (8) extends to the bottom of the contact oxidation tank (5), and a sludge outlet of the sludge gas stripping device (8) is communicated with the hydrolysis acidification tank (3).
9. The waste water treatment system of claim 1, wherein: volcanic rock facultative filter material canal (4) set up in the slope surface of mountain region side slope or pond side slope and length direction sets up along the slope direction of mountain region side slope or pond side slope, be provided with a plurality of blocks board (41) of arranging along volcanic rock facultative filter material canal (4) length direction in volcanic rock facultative filter material canal (4), volcanic rock facultative filter material is filled in the contained angle region between each block board (41) and volcanic rock facultative filter material canal (4).
10. The waste water treatment system of claim 1, wherein: the substrate of the artificial wetland (6) is sequentially provided with an impermeable layer (61), a drainage layer (62), a transition layer (63), a filter layer (64) and a surface layer (65) from bottom to top.
CN202010220407.0A 2020-03-25 2020-03-25 Sewage treatment system of garbage disposal station Pending CN111392967A (en)

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