CN108409070A - A kind of small power-free rural domestic sewage treatment system - Google Patents

A kind of small power-free rural domestic sewage treatment system Download PDF

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Publication number
CN108409070A
CN108409070A CN201810582270.6A CN201810582270A CN108409070A CN 108409070 A CN108409070 A CN 108409070A CN 201810582270 A CN201810582270 A CN 201810582270A CN 108409070 A CN108409070 A CN 108409070A
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CN
China
Prior art keywords
sewage
gravel
wetland
treatment system
sewage treatment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810582270.6A
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Chinese (zh)
Inventor
王翔
张瑜倩
朱召军
张红川
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HENAN ZHENGDA ENVIRONMENT SCIENCE AND TECHNOLOGY CONSULTING ENGINEERING CO LTD
Original Assignee
HENAN ZHENGDA ENVIRONMENT SCIENCE AND TECHNOLOGY CONSULTING ENGINEERING CO LTD
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Priority to CN201810582270.6A priority Critical patent/CN108409070A/en
Publication of CN108409070A publication Critical patent/CN108409070A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • C02F3/00Biological 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
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/28Anaerobic digestion processes
    • C02F3/2806Anaerobic processes using solid supports for microorganisms
    • 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
    • C02F3/2866Particular arrangements for anaerobic reactors
    • C02F3/288Particular arrangements for anaerobic reactors comprising septic tanks combined with a filter
    • 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

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Biological Treatment Of Waste Water (AREA)

Abstract

The invention discloses a kind of sewage disposal system, especially a kind of small power-free rural domestic sewage treatment system.The invention includes from the high to low pipe network for being arranged in order and being connected to, grid pond, sump, efficient Improvement type septic tank and artificial swamp.The invention has filled up rural sewage treatment industry energy consumption height as a kind of economic and practical, dedicated for rural domestic sewage treatment system, and the high technological gap of operating cost improves environmental benefit, the economic benefit in rural area, reduces operating cost.

Description

A kind of small power-free rural domestic sewage treatment system
Technical field
The present invention relates to a kind of sewage disposal system, especially a kind of small power-free rural domestic sewage treatment system.
Background technology
In the prior art, for small water rural domestic sewage treatment water in 5~100m3/d, treatment facility is generally one Body equipment, common technology:Links such as " grids → regulating reservoir → anaerobic digester → aerobic digestion tank → secondary settling tank ".Wherein, It is a wherein important ring in Aerobic Process for Treatment link, action principle is handled in anaerobic digestion using aerobic bacteria oxidation Undigested BOD in link.Oxygen charging method generally can be all aerated using roots blower, by the sewage meeting of Air Exposure Reach ideal outlet effect.But the process of aeration need it is high-power for a long time operate, energy consumption is high, sludge yield Height, the service life is small, complicated for operation, and operating cost is big.
And relatively simple process flow is in filtering, septic tank and then artificial swamp to be recycled to make into one water outlet sewage The advantages of step processing, current this processing mode is that energy consumption is few, and running is easy.But it is undesirable that there is also outlet effects, Manual moist The problems such as ground is blocked, is degenerated since load is excessive.
Now, in the art, common septic tank has muddy water mixing septic tank and three compartment septic tanks.Wherein muddy water mixes Septic tank refers to that sewage mixes carry out sewage disposal, including traditional septic tank and its other reinforcings with sludge in septic tank Septic tank technique.Muddy water mixing septic tank has problems with:(1) effluent quality is undesirable, and process operation effect is unstable;(2) The Volume Problems of sewage and sludge, since sewage and sludge are mixed factors, technology that sewage and mud volume are defined according to According to indefinite;(3) dwell time of sewage, septic tank are the engineering philosophy according to rectangular sedimentation tank, the precipitation of ideal sedimentation basin Time, in muddy water mixing septic tank, dwell time of sewage was generally set in 12 hours or more, technological design within 2 hours In there are negative effect factors;(4) sludge retention time, the sludge retention time (drawing the period clearly) of traditional septic tank is 90 days, 180 days, 360 days, this was to carry out the sludge capacity that linear accumulation obtains according to 0.8 sludge coefficient of diminution, and sludge itself has Degradation digestic property show that sludge accumulation is a nonlinear accumulation from the analysis of sludge constant convergence consumption, this Show that there are limitations in terms of mathematical model for traditional septic tank.Three compartment septic tank internal volumes carry out technical design, The stability of process conditions is ensured, but three compartment septic tank effluent qualities cannot meet the water quality requirement into artificial swamp, go out If water is directly entered artificial wet land system, the problems such as causing artificial swamp to block, degenerate since load is excessive.
Invention content
It is an object of the invention to:The present invention proposes a kind of small power-free rural domestic sewage treatment system, lossless Sanitary sewage is handled under the premise of energy, and reaches ideal treatment effect.
The technical solution adopted by the present invention is as follows:
A kind of small power-free rural domestic sewage treatment system, include from the high to low pipe network for being arranged in order and being connected to, Grid pond, sump, efficient Improvement type septic tank and artificial swamp,
The pipe network is used for sanitary sewage, sanitary wastewater and dining room sewage collecting and is conveyed to grid pond;
The grid pond is used to be conveyed to collection after sanitary sewage, sanitary wastewater and dining room sewage carry out prefiltration to collecting Dirty pond, wherein prefiltration eliminate larger floating material in sanitary sewage, sanitary wastewater and dining room sewage, impurity and larger inorganic Particle;
The sump is used to by sanitary sewage, sanitary wastewater and the dining room sewage of prefiltration be mixed to form mixed It closes sewage and combined sewage is conveyed to efficient Improvement type septic tank;
It is filled with biologic packing material in the efficient Improvement type septic tank, efficiently improves septic tank by biologic packing material to mixing Sewage carries out secondary filter and the combined sewage after secondary filter is conveyed to artificial swamp, wherein biologic packing material containing anaerobic bacteria and Biologic packing material eliminates most of organic matter in combined sewage;
The artificial swamp includes the surface current artificial wetland being sequentially communicated and vertical current constructed wetland, the surface person who lives in exile Work wetland is primary to carry out by the soil that the combined sewage after secondary filter is arranged with pulling flow type by surface and plant Purification;
The vertical current constructed wetland by by the combined sewage after primary purification with longitudinal undercurrent type by being vertically arranged Different medium layer to carry out double purification.
Preferably, the efficient Improvement type septic tank includes the preceding filter chamber being sequentially communicated and rear filter chamber, the preceding mistake The water inlet of filter chamber is filled using water fender, the biologic packing material is provided in front of the nozzle of Chinese lute bend pipe and the Chinese lute bend pipe In rear filter chamber.
Preferably, be both provided at the top of the preceding filter chamber and rear filter chamber it is clear draw mouth, it is all that described clear to draw mouths logical Snorkel connection is crossed, air inlet pipe and an air outlet pipe is additionally provided on the snorkel.
Preferably, the surface current artificial wetland includes wetland Region a and is wrapped in the enclosure wall of wetland Region a outside, described wet The surface of ground region a is covered with soil, and water layer is covered on the soil, and also kind is implanted with aquatic vegetation, wetland Region a on soil Surface current artificial wetland's captation is inside also distributed with, surface current artificial wetland's captation receives the water after primary purification Collect and is sent to vertical current constructed wetland.
Preferably, the vertical current constructed wetland includes the gravel layer set gradually from top to bottom, the mixing of gravel calcium activated Layer, gravel iron filings mixed layer and anti-seepage geotextile and plain soil layer, on the gravel layer on mulching soil and water layer and the soil Kind is implanted with aquatic vegetation.
Preferably, the gravel layer is formed by gravel pack, and the outer diameter of the gravel is 70-80mm.
Preferably, the gravel calcium activated mixed layer by calcium activated and gravel with 1:1 form is mixed to form, the calcium activated Outer diameter be 4-6mm, the outer diameter of the gravel is 5-10mm.
Preferably, the gravel iron filings mixed layer by iron filings and gravel with 1:1 form is mixed to form, the outer diameter of the iron filings Outer diameter for 2-10mm, the gravel is 5-10mm.
In conclusion by adopting the above-described technical solution, the beneficial effects of the invention are as follows:
A kind of small power-free rural domestic sewage treatment system in the present invention, as a kind of economic and practical, special use In the system of rural domestic sewage treatment, rural sewage treatment industry energy consumption height is filled up, the high technological gap of operating cost carries The high environmental benefit in rural area, economic benefit, reduce operating cost.
Description of the drawings
Fig. 1 is structure of the invention figure;
It is marked in figure:1- grid ponds;The efficient Improvement type septic tanks of 3-;4- Chinese lute bend pipes;5- water fenders;7- snorkels;9- Biologic packing material;10- draws clearly mouth;13- surface current artificial wetlands;15- surface current artificial wetland's captations;17- perpendicular flow artificials Wetland;18- anti-seepage geotextiles and plain soil layer;19- gravel iron filings mixed layers;20- gravel calcium activated mixed layers;21- gravel layers.
Specific implementation mode
All features disclosed in this specification can be with any other than mutually exclusive feature and/or step Mode combines.
Embodiment one
The present embodiment as shown in Figure 1, a kind of small power-free rural domestic sewage treatment system, including from it is high to low successively Pipe network, grid pond 1, sump, efficient Improvement type septic tank 3 and the artificial swamp for arranging and being connected to,
The pipe network is used for sanitary sewage, sanitary wastewater and dining room sewage collecting and is conveyed to grid pond 1;
The grid pond 1 is used to be conveyed to after sanitary sewage, sanitary wastewater and dining room sewage carry out prefiltration to collecting Sump, wherein prefiltration eliminate larger floating material, impurity and larger nothing in sanitary sewage, sanitary wastewater and dining room sewage Machine particle;
The sump is used to by sanitary sewage, sanitary wastewater and the dining room sewage of prefiltration be mixed to form mixed It closes sewage and combined sewage is conveyed to efficient Improvement type septic tank 3;
It is filled with biologic packing material 9 in the efficient Improvement type septic tank 3, it is right by biologic packing material 9 efficiently to improve septic tank Combined sewage carries out secondary filter and the combined sewage after secondary filter is conveyed to artificial swamp, and wherein biologic packing material 9 contains and detests Oxygen bacterium and biologic packing material 9 eliminate most of organic matter in combined sewage;
The artificial swamp includes the surface current artificial wetland 13 being sequentially communicated and vertical current constructed wetland 17, the surface Artificial wetland 13 by soil that the combined sewage after secondary filter is arranged with pulling flow type by surface and plant into Row primary purification;
The vertical current constructed wetland 17 by by the combined sewage after primary purification with longitudinal undercurrent type by vertically setting The different medium layer set is to carry out double purification.
This patent operation principle is that sanitary sewage, sanitary wastewater and dining room sewage pass through pipe network and collects respectively, by artificial The filtering of grid enters sump, during which removes larger floating material, impurity and larger inorganic particle;Then flow by gravity is to efficient The part of Improvement type septic tank 3, efficient 3 most critical of Improvement type septic tank is the biologic packing material 9 being arranged in rear filter chamber, setting life Object filler 9 is acted on using anaerobic bacteria by most of organic matter removal with increasing the contact surface area of biomembrane and sewage;Ensure Water quality stabilizing reaches into artificial wet land water quality requirement.
Surface current artificial wetland 13 is similar with natural wetland, and waste water is from surface water flow mistake.But surface current artificial wetland 13 be engineer, supervision and management wet land system, clean effect be better than natural wetland system.Oxygen in surface current artificial wetland 13 Source mainly by water surface diffusion, the transmission of root system of plant and plant photosynthesis.
Vertical subsurface flow wetland is sewage by after dosing to bed area surface, floods whole surface, then gradually vertically oozes Bottom is flowed to, two kinds of downstream and upstream, interval alternate run can be divided into.Sewage flows to packed bed from wetland surface longitudinal Bottom, bed body are in undersaturated condition, and oxygen can be transmitted by Atmospheric Diffusion and plant into people's artificial wet land system.Vertical subsurface flow people The nitrification ability of work wetland is higher than horizontal drowned flow artificial wet land, can be used for handling the higher sewage of ammonia nitrogen.
Artificial swamp removes pollutant mechanism:
(1) Plants of Constructed Wetlands purifies sewage mechanism:Plant is decontamination ingredient important in wetland, is rooted in packing layer In, not only a large amount of organic pollutions and inorganic matter can be consumed by the growth and breeding of itself, can also pass through the photosynthetic work of plant Oxygen is provided with the microorganism for apposition growth in wet land filler.
(2) microbial cleaning sewage mechanism in artificial swamp:In artificial swamp, removal master of the microorganism to organic pollution It to be completed by aerobic degradation and anaerobic degradation.
(3) artificial swamp mesostroma purifies sewage mechanism:The artificial swamp being widely used at present mainly with soil, zeolite, Clinker, lime stone, gravel, ceramics, natural rock and mineral material are matrix, on the one hand these matrix are that the growth of microorganism carries Surface is depended on for stabilization, while also providing carrier and nutriment for water plant.When sewage flows through artificial swamp, matrix It is decontaminated by some physics and chemistry approach (such as absorption and sorption, filtering, ion exchange, complex reaction) to purify The nutriments such as N, P in water.
Compared with prior art, the advantageous effect of this patent is:
1, simple for process, construction is easy, and investment is small.
2, low energy consumption, and cost of sewage disposal per ton is less than 0.2 yuan, and fully automatic operation is particularly suitable for the life of rural area distributing Sewage disposal.
3, stable, effluent quality is good, and sludge quantity is few, and free from extraneous odour does not grow mosquitos and flies, to ambient enviroment without secondary dirt Dye.
4, full-buried type can be used in main body structures, is not take up table soil resource, build up after top can earth-covering greening, Manual moist Ground can make manmade landscape, artificial landscape.
Positive beneficial effect:This patent is a kind of economic and practical, dedicated for rural domestic sewage treatment system, is filled up Rural sewage treatment industry energy consumption is high, and the high technological gap of operating cost improves environmental benefit, the economic benefit in rural area, Reduce operating cost.
Embodiment two
The present embodiment is further improved based on embodiment 1, as shown in Figure 1, the efficient Improvement type septic tank 3 include according to The preceding filter chamber and rear filter chamber of secondary connection, the water inlet of the preceding filter chamber is using Chinese lute bend pipe 4 and the Chinese lute bend pipe 4 It is provided with water fender 5 in front of nozzle, the biologic packing material 9 is filled in rear filter chamber.
In use, sewage can be effectively controlled by water fender 5 to flash,.
Embodiment three
The present embodiment is based on any one of embodiment 1-2 and is further improved, as shown in Figure 1, the preceding filter chamber and Be both provided at the top of filter chamber afterwards it is clear draw mouth 10, it is all it is described it is clear draw mouth 10 and be connected to by snorkel 7, the snorkel 7 On be additionally provided with air inlet pipe and an air outlet pipe.
In use, the gases such as the biogas that snorkel 7 can timely generate septic tank internal cause anaerobic fermentation are drawn, The heat that fermentation generates can also be dispersed simultaneously, and gas collector is both provided at 7 top of snorkel.
Example IV
The present embodiment is based on any one of embodiment 1-3 and is further improved, as shown in Figure 1, the surface turning flow artificial Wetland 13 includes wetland Region a and the enclosure wall for being wrapped in wetland Region a outside, and the surface of the wetland Region a is covered with soil, described Water layer is covered on soil, also kind is implanted with aquatic vegetation on soil, and the collection of surface current artificial wetland 13 is also distributed in wetland Region a Water after primary purification is collected and is sent to vertical current constructed wetland by water installations, 13 captation of the surface current artificial wetland 17。
In use, the combined sewage after secondary filter is to 13 surface water distribution of surface current artificial wetland, and flow is in table 13 surface of surface current artificial swamp is advanced in pulling flow type, in flow process, is connect with the biomembrane of soil, plant and plant root It touches, by physics, chemistry and biological respinse, purifies the sewage, and flowed out in terminal.
Embodiment five
The present embodiment is based on any one of embodiment 1-4 and is further improved, as shown in Figure 1, the perpendicular flow artificial Wetland 17 includes the gravel layer 21 set gradually from top to bottom, gravel calcium activated mixed layer 20, gravel iron filings mixed layer 19 and prevents Ooze geotextiles and plain soil layer 18, mulching soil and water layer and the grown on soil has aquatic vegetation on the gravel layer 21.
In use, after primary purification and combined sewage flow to a bottom by surface longitudinal, in the process longitudinally flowed Middle sewage passes through different patented medium layers successively, achievees the purpose that purification.Vertical current undercurrent type wetland has complete water distribution System and collecting system, its advantage is that floor space is small compared with other forms wetland, treatment effeciency is high, and whole system can be built completely In underground, greenery patches can be built up on the ground and cooperation landscape planning uses.
Embodiment six
The present embodiment is based on any one of embodiment 1-4 and is further improved, as shown in Figure 1, the gravel layer 21 by Gravel pack is formed, and the outer diameter of the gravel is 70-80mm.
Embodiment seven
The present embodiment is based on any one of embodiment 1-4 and is further improved, as shown in Figure 1, the gravel calcium activated Mixed layer 20 is by calcium activated and gravel with 1:1 form is mixed to form, and the outer diameter of the calcium activated is 4-6mm, the gravel it is outer Diameter is 5-10mm.
Embodiment eight
The present embodiment is based on any one of embodiment 1-4 and is further improved, as shown in Figure 1, the gravel iron filings are mixed Layer 19 is closed by iron filings and gravel with 1:1 form is mixed to form, and the outer diameter of the iron filings is 2-10mm, and the outer diameter of the gravel is 5- 10mm。
It is the embodiment of the present invention as described above.The present invention is not limited to the above-described embodiments, anyone should learn that The structure change made under the inspiration of the present invention, the technical schemes that are same or similar to the present invention each fall within this Within the protection domain of invention.

Claims (8)

1. a kind of small power-free rural domestic sewage treatment system, it is characterised in that:Including from it is high to low be arranged in order and even Logical pipe network, grid pond (1), sump, efficient Improvement type septic tank (3) and artificial swamp,
The pipe network is used for sanitary sewage, sanitary wastewater and dining room sewage collecting and is conveyed to grid pond (1);
The grid pond (1) is used to be conveyed to collection after sanitary sewage, sanitary wastewater and dining room sewage carry out prefiltration to collecting Dirty pond, wherein prefiltration eliminate larger floating material in sanitary sewage, sanitary wastewater and dining room sewage, impurity and larger inorganic Particle;
The sump is used to carry out being mixed to form mixing dirt by sanitary sewage, sanitary wastewater and the dining room sewage of prefiltration Combined sewage is simultaneously conveyed to efficient Improvement type septic tank (3) by water;
It is filled with biologic packing material (9) in the efficient Improvement type septic tank (3), efficiently improves septic tank and passes through biologic packing material (9) Secondary filter is carried out to combined sewage and the combined sewage after secondary filter is conveyed to artificial swamp, wherein biologic packing material (9) Most of organic matter in combined sewage is eliminated containing anaerobic bacteria and biologic packing material (9);
The artificial swamp includes the surface current artificial wetland (13) being sequentially communicated and vertical current constructed wetland (17), the surface Artificial wetland (13) by soil that the combined sewage after secondary filter is arranged with pulling flow type by surface and plant to Carry out primary purification;
The vertical current constructed wetland (17) by by the combined sewage after primary purification with longitudinal undercurrent type by being vertically arranged Different medium layer to carry out double purification.
2. a kind of small power-free rural domestic sewage treatment system according to claim 1, it is characterised in that:The height Effect Improvement type septic tank (3) includes the preceding filter chamber being sequentially communicated and rear filter chamber, and the water inlet of the preceding filter chamber uses plucked string instrument with a fretted fingerboard It is provided with water fender (5), mistake after the biologic packing material (9) is filled in front of the nozzle of Pa bend pipes (4) and the Chinese lute bend pipe (4) In filter chamber.
3. a kind of small power-free rural domestic sewage treatment system according to claim 2, it is characterised in that:Before described It is both provided at the top of filter chamber and rear filter chamber and draws mouth (10) clearly, all clear mouths (10) of drawing are connected by snorkel (7) It is logical, it is additionally provided with air inlet pipe and an air outlet pipe on the snorkel (7).
4. a kind of small power-free rural domestic sewage treatment system according to claim 1, it is characterised in that:The table Surface current artificial swamp (13) includes wetland Region a and is wrapped in the enclosure wall of wetland Region a outside, the surface covering of the wetland Region a There is soil, water layer is covered on the soil, also kind is implanted with aquatic vegetation on soil, and surface stream is also distributed in wetland Region a Water after primary purification is collected and is sent to by artificial swamp (13) captation, surface current artificial wetland's (13) captation Vertical current constructed wetland (17).
5. a kind of small power-free rural domestic sewage treatment system according to claim 1, it is characterised in that:It is described to hang down Direct current artificial swamp (17) includes the gravel layer (21), gravel calcium activated mixed layer (20), gravel iron set gradually from top to bottom Consider mixed layer (19) and anti-seepage geotextile and plain soil layer (18) to be worth doing, mulching soil and water layer and the soil on the gravel layer (21) Upper kind be implanted with aquatic vegetation.
6. a kind of small power-free rural domestic sewage treatment system according to claim 5, it is characterised in that:The gravel Rock layers (21) are formed by gravel pack, and the outer diameter of the gravel is 70-80mm.
7. a kind of small power-free rural domestic sewage treatment system according to claim 5, it is characterised in that:The gravel Stone calcium activated mixed layer (20) is by calcium activated and gravel with 1:1 form is mixed to form, and the outer diameter of the calcium activated is 4-6mm, institute The outer diameter for stating gravel is 5-10mm.
8. a kind of small power-free rural domestic sewage treatment system according to claim 5, it is characterised in that:The gravel Stone iron filings mixed layer (19) is by iron filings and gravel with 1:1 form is mixed to form, and the outer diameter of the iron filings is 2-10mm, the gravel Outer diameter be 5-10mm.
CN201810582270.6A 2018-06-07 2018-06-07 A kind of small power-free rural domestic sewage treatment system Pending CN108409070A (en)

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Application Number Priority Date Filing Date Title
CN201810582270.6A CN108409070A (en) 2018-06-07 2018-06-07 A kind of small power-free rural domestic sewage treatment system

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Application Number Priority Date Filing Date Title
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Publication number Priority date Publication date Assignee Title
CN109796108A (en) * 2019-02-26 2019-05-24 河南省正大环境科技咨询工程有限公司 A kind of artificial wet land treating system for deep purification of waste water
CN110713316A (en) * 2019-10-21 2020-01-21 甘肃昊宇环保科技有限公司 Artificial wetland treatment device and method for rural domestic sewage in northwest region
CN112759087A (en) * 2020-12-16 2021-05-07 郑州大学环境技术咨询工程有限公司 Denitrification artificial wetland integrated purification system and sewage ecological purification method

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109796108A (en) * 2019-02-26 2019-05-24 河南省正大环境科技咨询工程有限公司 A kind of artificial wet land treating system for deep purification of waste water
CN110713316A (en) * 2019-10-21 2020-01-21 甘肃昊宇环保科技有限公司 Artificial wetland treatment device and method for rural domestic sewage in northwest region
CN112759087A (en) * 2020-12-16 2021-05-07 郑州大学环境技术咨询工程有限公司 Denitrification artificial wetland integrated purification system and sewage ecological purification method

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