CN1533990A - High density aquatic plant ditch sewage treatment system - Google Patents
High density aquatic plant ditch sewage treatment system Download PDFInfo
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- CN1533990A CN1533990A CNA031161014A CN03116101A CN1533990A CN 1533990 A CN1533990 A CN 1533990A CN A031161014 A CNA031161014 A CN A031161014A CN 03116101 A CN03116101 A CN 03116101A CN 1533990 A CN1533990 A CN 1533990A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
A system and method for treating sewage features that a high-density hydrophyte ditch is used to simulate a natural ecological system, which can absorb the nutrients from sewage, adsorb heavy metals and toxic and hamful substance, and remove nitrogen from sewage. Its advantages are high effect and low cost.
Description
Technical field
The present invention relates to a kind of Sewage treatment systems.
Background technology
The dispersion treatment of the second-stage treatment residential area sanitary sewage of sewage disposal, especially city domestic sewage and the recovery of surface water pollution are the important topics that directly has influence on quality of life and ecotope.Numerous for this reason scientists and researchist have proposed many processing schemes, cut both ways.But investment is big, energy consumption is high, maintenance and operation is inconvenient, buffering capacity is little, and treatment effect is not ideal enough all to be the existing difficult problems of present numerous method, can't combine with greening simultaneously, when disposing of sewage, is difficult to produce good ecological benefits.
Summary of the invention
The technical issues that need to address of the present invention are to disclose a kind of high-density waterplant ditch Sewage treatment systems and sewage water treatment method, to overcome the above-mentioned defective that prior art exists.
Technical conceive of the present invention is such:
High-density waterplant ditch Sewage treatment systems of the present invention is to learn function according to the special ecological of waterplant to design.The contriver is by the attitude the utilized nutritive substance in direct absorption of waterplant and the assimilation sewage, interception, absorption and enriching heavy metal and some hazardous and noxious substances are root district aerobic microbiological delivering oxygen and the decomposition and inversion that promotes pollutent in the sewage by the effects such as waterpower transmission that strengthen and keep medium by photosynthesis.By screening suitable waterplant, carry out highdensity plantation, and, strengthen above-mentioned effect, to have denitrogenation dephosphorizing effect preferably in conjunction with certain engineering measure.But waterplant also has appreciating attractive in appearance simultaneously, can improve the landscape ecological environment.
High-density waterplant ditch Sewage treatment systems of the present invention comprises placed in-line successively equalizing tank, water distribution system, plants aquatic high-density waterplant ditch and water exhaust system of planting.
Said equalizing tank is arranged on Sewage treatment systems foremost, with silt in the balanced water yield and the removal sewage and big cake mass, and the sewage that enters system carried out pre-treatment, the sewage that is higher than 200mg/l for pollution load COD, before entering high-density waterplant ditch Sewage treatment systems, should carry out pre-treatment, make its pollution load be lower than COD 200mg/l.When raw waste water COD is lower than 300mg/l, adopt the coagulating sedimentation mode; When raw waste water COD is higher than 400mg/l, adopt the high-rate filter mode; When being higher than 500mg/l, adopts raw waste water COD the anaerobic fixed film reactor mode.
Said water distribution system comprises the cloth water channel, the chute and the stream plate that shakes shake.The length of cloth water channel is consistent with the width of high-density waterplant ditch, width 40～50cm, and the degree of depth is not less than 50cm.Water inlet pipe is arranged on cloth water channel middle-end bottom.Posticum is arranged on cloth water channel inboard, is higher than high-density waterplant ditch water level 5～10cm.The length of chute of shaking is consistent with the cloth water channel, width 30～400m, inboard for being provided with the stream plate that shakes of water distribution aperture, the extreme higher position of water distribution aperture is consistent with high-density waterplant ditch sewage position, the cloth water channel and the chute bottom that shakes are the gradient about 3～5 °, and the one or both ends of cloth water channel are provided with mudhole, and external shore pipe is to sludge thickener, mudhole is closed at ordinary times, only uses when regular cleaning.
High-density waterplant ditch is the agent structure of high-density waterplant ditch Sewage treatment systems, comprises irrigation canals and ditches, matrix (filler) and waterplant.Waterplant is by the photosynthesis of blade and the translocation of stem stalk, oxygen is transported to root, pass through the diffusion of plant roots surface structure again, form aerobic zone around in the root district, just having a large amount of aerobic microbiologicals around like this in the root district decomposes organism, less and inaccessible place will form facultative district and anaerobic zone in the root district, the effect of aerobic-anaerobic microbe and anaerobion degradation of organic substances takes place, exist aerobic zone and anaerobic zone the time in this matrix, very help the carrying out of nitrification and denitrification reaction and reach the effect of denitrogenating.High-density waterplant ditch is arranged on the clay seam, as be sandy soil, then impervious barrier should be set at the bottom of canal, with guarantee not can be because of effluent seepage polluted underground water, impervious barrier is arranged on below the 30cm of canal bottom surface, be to want backfill 300m thick soil stratum above the impervious barrier at least, as the planting aquatic plants bedding, both sides are cut-pff wall, the length of irrigation canals and ditches can require to adjust according to the pollution load and the water outlet of water inlet, the degree of depth is generally 10～100cm, and preferred 40～60cm is from feed-water end, treatment zone every 10～14m, the settling region that one length is 1.5～4.5m is set, and the bottom, settling region is a V-structure, and in a side mud discharging mouth is set, connect shore pipe to sludge thickener, the settling region degree of depth is 0.5～1.5m, in the tail end bottom of irrigation canals and ditches one collection tube is installed, and treated sewage enters discharge channel by this collection tube.
Require to consider in high-density waterplant ditch, to load matrix or do not load matrix according to raw waste water water quality situation and water outlet.Under the situation of influent load higher (COD is close to or higher than 200mg/l), should in irrigation canals and ditches, load matrix, to strengthen treatment effect.Matrix is loaded the treatment zone bottom in irrigation canals and ditches, the about 15-25cm of thickness, and matrix is the particulate state biofilter material, as coarse sand, rubble, lime-ash etc.Because matrix is when providing growth medium for plant and microorganism, also directly remove pollutent by effects such as filtration, absorption, therefore treatment effect is better than not loading the situation of matrix, under the situation of influent load lower (COD is lower than 180mg/l), need not to load matrix, only the processing by the waterplant ditch just can reach processing requirements.
The selection of waterplant and to plant be one of key factor of high-density waterplant ditch Sewage treatment systems.Water and floating leaf two class waterplant are endured in main selection in this treatment process.Emergent has the Solid Bed surface, good filtration condition is provided, prevent siltation and provide good functions such as root district environment for microorganism.Simultaneously itself also having the effect of assimilation and absorb polluted matter, is the main waterplant monoid that high-density waterplant ditch Sewage treatment systems is selected for use therefore.High-density planting is in treatment zone.The growing way of general plant is good more, and density is big more, and the ability that purifies water is strong more.
On the plant arrangement of high-density waterplant ditch Sewage treatment systems, should suit measures to local conditions, according to the geographic natural climate condition of sewage disposal, selection has following waterplant of holding a little: rely and pollute, anti-water is wet, well developed root system, has the ability of stronger absorption and enrichment pollutent; Based on evergreen or half evergreen waterplant, to guarantee the treatment effect and the landscape effect in winter; Being suitable in the depth of water is the irrigation canals and ditches of 20-40cm, the density plantation.There is or do not have high-density planting under the artificial matrix condition.As in the area, Shanghai, be applicable to that the very water waterplant of high-density waterplant ditch Sewage treatment systems mainly contains: yellow flag, mandarin duck sugarcane, greenery Scirpus tabernaemontani, floral leaf Scirpus tabernaemontani, calamus, common cattail, raupo, floral leaf cattail, mullet grass, Arundo donax, European Lu Di, Shi Lu, flower calamus, floral leaf Canna generalis Bailey, Rush, dried dish, the parasol grass etc. of bending.
Do not plant emergent in the settling region, but often plant the floatingleaved plant of some amount, as water lily, spatterdock, lotus etc., with the ecoscape effect of strengthening treatment system.
In addition, around treatment system, reasonably plant Qiao, the wooden green belt of discussing, create good subenvironment condition, for the growth of waterplant in the system with survive the winter very favourable.
Said water exhaust system comprises collection tube and discharge channel, and collection tube is installed on the tail end bottom of waterplant ditch, collection hole evenly is set on the pipe, and feeds discharge channel with tubule.Discharge channel length is consistent with the width of waterplant ditch, the degree of depth 10～100cm, preferred 40～60cm.One end of discharge channel is established adjustable gate, can regulate the water level of discharge channel by gate, and then controls the water level of high-density waterplant ditch.
When adopting high-density waterplant ditch Sewage treatment systems of the present invention to sewage disposal, water level is traditionally arranged to be 20～40cm in its ditch, preferred 30cm, under the situation of loading matrix, can be set to 35～40cm, flow velocity is controlled at 0.03～0.07m/s, preferred 0.05m/s, and (hydraulic load of 5m * 120m) is controlled in the 270m3/h each processing unit.Therefore each is handled unitary treatment capacity and can reach 5000m3/d.Treat effluent reaches national composite wastewater discharging secondary standard (GB).
In high-density waterplant ditch Sewage treatment systems, consider the possibility that reflow treatment and two-stage tandem are handled.When COD of sewage concentration is big, may have a negative impact to waterplant existence.Adopt technique of backflow, can dilute influent concentration, reduce the COD value of raw waste water, reach balanced load, improve the purpose of processing efficiency.When the sewage load was big, uniprocessing may also not reach emission standard, handled and can achieve the goal by series connection.
At treatment effect at the high-density waterplant ditch Sewage treatment systems of residential quarters, cities and towns sanitary sewage disposal.Therefore can suitably reduce hydraulic load in the winter time or take other adequate measures in service in high-density waterplant ditch Sewage treatment systems, even the cleaning that the dead leaf that the reply waterplant produces carries out, under the dead situation of waterplant part, even reseeding of should carrying out.
High-density waterplant ditch Sewage treatment systems does not generally produce a large amount of excess sludges, even therefore under the situation of loading matrix fill, also can not cause the obstruction of handling ditch, but behind the long-play, bottom of trench may have the accumulation gradually of mud, causes the decline of treatment capacity.Therefore after system's long period (1～2 year) operation, should carry out desilting and handle, or by hydrodynamic cleaning, or the artificial desilting of cutting off the water.A small amount of mud of collecting from the settling region in service is at ordinary times regularly handled after entering sludge thickener by pipeline.
In addition, regular water quality detection can provide reference for the operational management of system.The index that detects comprises CODcr, BOD
5, SS etc.Generally, the operation of high-density waterplant ditch Sewage treatment systems and management are all very easy, and this also is one of characteristics of the present invention.
The present invention can be provided with one to a plurality of processing units according to handling the water yield, even but suggestion is lower than 5000m in the processing water yield
3Under the situation of/d, two processing units are set at least also.Can each handle the processing water yield of unitary width and the balanced each processing unit of control water inlet hydraulic load by suitable minimizing in the case.And suitably reduce the water inlet hydraulic load in the winter time and can guarantee treatment effect.Special Circumstances are cut off the water when safeguarding as need, and the water yield that can safeguard processing unit with cutting off the water is allocated in other 1 or the several processing unit, so both can carry out alternative to each processing unit and safeguard, is unlikely to influence this successive process of sewage disposal again.Therefore, the benefit that 2 above processing units are set is the facility of maintenance and management.
In high-density waterplant ditch Sewage treatment systems technology, should be after water plant planting be finished, and begin formal water distribution under 90% above well-grown situation, the cloth water yield is less when requiring beginning simultaneously, increases gradually later on.According to the growing state of waterplant, in 1～2 month, reach the specified cloth water yield.Can make waterplant that sewage is had an adaptive process preferably like this, guarantee treatment effect simultaneously.
In service in high-density waterplant ditch Sewage treatment systems because waterplant is vigorous in spring, summer and growth in autumn, makes system stronger to the processing power of sewage; Therefore can suitably increase treatment capacity.And in the winter time,, therefore can suitably reduce hydraulic load because aquatic plant dormancy of part or poor growth may influence treatment effect.
By above-mentioned disclosed technical scheme as seen, high-density waterplant ditch Sewage treatment systems is according to ecological principle, adopts the ecological engineering method, takes into account the environmental greening effect simultaneously and the sewage disposal technology of new generation that proposes.Its basic point is exactly simulation and the natural ecosystems process of strengthening a sewage purification.In this course, on the one hand root system of plant can absorb from sewage that nutritive substance is used, heavy metal and some hazardous and noxious substances in absorption and the enrichment sewage.On the other hand, after sewage enters high-density waterplant ditch, constantly contact, thereby make microorganism, form so-called microbial film in its surface breeding with highdensity roots of plants district and plant stem.The biology community structure that microbial film is made up of multiple microorganism and microfauna, it utilizes organic pollutant in the sewage as nutritive substance, carries out katabolism and obtains energy, and form new microorganism body.When microbial film reaches certain thickness, because the internal layer anoxic can cause biomembranous sticking power to weaken, thereby old microbial film is come off under the washing away of current, new microbial film is forming again.Sewage also is purified in this moves in circles.The present invention is a kind of method that sewerage ecological processing and environmental greening are combined.It is simple that this method has a system process, except that the second-stage treatment that is applicable to city domestic sewage, also can be applicable to the dispersion treatment of residential area sanitary sewage and the recovery of surface water pollution.This treatment system organically combines sewage disposal ecology and landscape, thereby make sewage treatment process more meet the ecological process that a sewage natural purifies, have characteristics such as technical process is simple, cost of investment is low, treatment effect is good, secondary pollution is few, operational management is easy, and flexible and convenient, both be suitable for focusing in a large number of sewage, also be suitable for the dispersion treatment of the little water yield.And, Sewage Plant can be become the aquatic attitude father-in-law garden of a grace fully by the landscape design processing.The present invention can combine with the garden landscape of polluted water land treatment system and sub-district as the case may be, reaches the requirement of zero release and reuse.In the case, the sewage after overpopulation waterplant ditch Sewage treatment systems is handled, again through with the sub-district in garden landscape integrate the processing of the polluted water land treatment system of one, its water outlet can be used for the gardens water in the sub-district.Or can combine with polluted water land treatment system and Agro-ecological Engineering as the case may be, reach reusing sewage, the purpose of conserve water resource.This pattern is specially adapted to the arid area.
Description of drawings
Fig. 1 is a structure flow chart of the present invention.
Embodiment
Referring to Fig. 1, high-density waterplant ditch Sewage treatment systems of the present invention comprises placed in-line successively equalizing tank 1, water distribution system 2, plants aquatic high-density waterplant ditch 3 and water exhaust system 4 of planting.
Said equalizing tank 1 is arranged on Sewage treatment systems foremost;
Said water distribution system 2 comprises the cloth water channel 201 that connects successively, the shake chute and the stream plate 202 that shakes, and the bottom of cloth water channel 201 is provided with mudhole 203 and prosopyle 204;
Said high-density waterplant ditch 3 comprises irrigation canals and ditches, matrix (filler) and waterplant.Waterplant is by the photosynthesis of blade and the translocation of stem stalk, oxygen is transported to root, pass through the diffusion of plant roots surface structure again, form aerobic zone around in the root district, just having a large amount of aerobic microbiologicals around like this in the root district decomposes organism, less and inaccessible place will form facultative district and anaerobic zone in the root district, the effect of aerobic-anaerobic microbe and anaerobion degradation of organic substances takes place, exist aerobic zone and anaerobic zone the time in this matrix, very help the carrying out of nitrification and denitrification reaction and reach the effect of denitrogenating.Said high-density waterplant ditch is arranged on the clay seam, as be sandy soil, then impervious barrier should be set at the bottom of canal, with guarantee not can be because of effluent seepage polluted underground water, impervious barrier is arranged on below the 30cm of canal bottom surface, be to want backfill 300m thick soil stratum above the impervious barrier at least, as the planting aquatic plants bedding, both sides are cut-pff wall, the length of irrigation canals and ditches can require to adjust according to the pollution load and the water outlet of water inlet, the degree of depth is generally 10～100cm, and preferred 40～60cm is from feed-water end, treatment zone 301 every 10～14m, it is the settling region 302 of 1.5～4.5m that one length is set, and 302 bottoms, settling region are V-structure, and in a side mud discharging mouth are set, connect shore pipe to sludge thickener, the settling region degree of depth is 0.5～1.5m, in the tail end bottom of irrigation canals and ditches one collection tube is installed, and treated sewage enters water exhaust system 4 by this collection tube.
Require to consider in high-density waterplant ditch, to load matrix or do not load matrix according to raw waste water water quality situation and water outlet.
Under the situation of influent load higher (COD is close to or higher than 200mg/l), should in irrigation canals and ditches, load matrix, to strengthen treatment effect.Matrix is loaded the treatment zone bottom in irrigation canals and ditches, the about 15-25cm of thickness, and matrix is the particulate state biofilter material, as coarse sand, rubble, lime-ash etc.Because matrix is when providing growth medium for plant and microorganism, also directly remove pollutent by effects such as filtration, absorption, therefore treatment effect is better than not loading the situation of matrix, under the situation of influent load lower (COD is lower than 180mg/l), need not to load matrix, only the processing by the waterplant ditch just can reach processing requirements.
The selection of waterplant and to plant be one of key factor of high-density waterplant ditch Sewage treatment systems.Water and floating leaf two class waterplant are endured in main selection in this treatment process.Emergent has the Solid Bed surface, good filtration condition is provided, prevent siltation and provide good functions such as root district environment for microorganism.Simultaneously itself also having the effect of assimilation and absorb polluted matter, is the main waterplant monoid that high-density waterplant ditch Sewage treatment systems is selected for use therefore.High-density planting is in treatment zone.The growing way of general plant is good more, and density is big more, and the ability that purifies water is strong more.
On the plant arrangement of high-density waterplant ditch Sewage treatment systems, should suit measures to local conditions, according to the geographic natural climate condition of sewage disposal, selection has following waterplant of holding a little: rely and pollute, anti-water is wet, well developed root system, has the ability of stronger absorption and enrichment pollutent; Based on evergreen or half evergreen waterplant, to guarantee the treatment effect and the landscape effect in winter; Being suitable in the depth of water is the irrigation canals and ditches of 20-40cm, the density plantation.There is or do not have high-density planting under the artificial matrix condition.
In addition, around treatment system, reasonably plant Qiao, the wooden green belt of discussing, create good subenvironment condition, for the growth of waterplant in the system with survive the winter very favourable.
Said water exhaust system 4 includes collection tube 401 and discharge channel 402, and collection tube 401 is installed on the tail end bottom of waterplant ditch, collection hole evenly is set on the pipe, and feeds discharge channel with tubule.Discharge channel length is consistent with the width of waterplant ditch, the degree of depth 10～100cm, preferred 40～60cm.One end of discharge channel is established adjustable gate 403, can regulate the water level of discharge channel by gate 403, and then controls the water level of high-density waterplant ditch.
When adopting high-density waterplant ditch Sewage treatment systems of the present invention to sewage disposal, water level is traditionally arranged to be 20～40cm in its ditch, preferred 30cm, under the situation of loading matrix, can be set to 35～40cm, flow velocity is controlled at 0.03～0.07m/s, preferred 0.05m/s, and (hydraulic load of 5m * 120m) is controlled in the 270m3/h each processing unit.Therefore each is handled unitary treatment capacity and can reach 5000m3/d.Treat effluent reaches national composite wastewater discharging secondary standard (GB).
In high-density waterplant ditch Sewage treatment systems, consider the possibility that reflow treatment and two-stage tandem are handled.When COD of sewage concentration is big, may have a negative impact to waterplant existence.Adopt technique of backflow, can dilute influent concentration, reduce the COD value of raw waste water, reach balanced load, improve the purpose of processing efficiency.When the sewage load was big, uniprocessing may also not reach emission standard, handled and can achieve the goal by series connection.
Claims (10)
1. a high-density waterplant ditch Sewage treatment systems is characterized in that, comprises placed in-line successively equalizing tank (1), water distribution system (2), plants aquatic high-density waterplant ditch (3) of planting and water exhaust system (4).
2. Sewage treatment systems according to claim 1, it is characterized in that, said water distribution system (2) comprises the cloth water channel (201) that connects successively, the shake chute and the stream plate (202) that shakes, and the bottom of cloth water channel (201) is provided with mudhole (203) and prosopyle (204).
3. Sewage treatment systems according to claim 1, it is characterized in that, said high-density waterplant ditch (3) comprises irrigation canals and ditches, matrix (filler) and waterplant, the degree of depth of irrigation canals and ditches is 10～100cm, from feed-water end, treatment zone (301) every 10～14m, the settling region that length is 1.5～4.5m (302) is set, at the bottom of high-density waterplant irrigation canals and ditches, impervious barrier is set, impervious barrier is arranged on below the 30cm of canal bottom surface, both sides are cut-pff wall, the bottom, settling region is a V-structure, and in a side mud discharging mouth is set, and connects shore pipe to sludge thickener, a collection tube is installed in tail end bottom at irrigation canals and ditches, and treated sewage enters water exhaust system (4) by this collection tube.
4. Sewage treatment systems according to claim 1 is characterized in that, the degree of depth of irrigation canals and ditches is 40～60cm.
5. Sewage treatment systems according to claim 1, it is characterized in that, said water exhaust system (4) comprises collection tube (401) and discharge channel (402), collection tube (401) is installed on the tail end bottom of waterplant ditch (3), collection hole evenly is set on the pipe, and feeds discharge channel with tubule, discharge channel (402) length is consistent with the width of waterplant ditch, the degree of depth 10～100cm, an end of discharge channel (402) is established adjustable gate (403).
6. Sewage treatment systems according to claim 5 is characterized in that, discharge channel (402) degree of depth 40～60cm.
7. Sewage treatment systems according to claim 1 is characterized in that, the cloth water channel and the chute bottom that shakes are the gradient about 3～5 °.
8. according to each described Sewage treatment systems of claim 1～7, it is characterized in that the plantation floatingleaved plant comprises water lily, spatterdock or lotus in the settling region; Treatment zone plantation emergent, comprise yellow flag, mandarin duck sugarcane, greenery Scirpus tabernaemontani, floral leaf Scirpus tabernaemontani, calamus, common cattail, raupo, floral leaf cattail, mullet grass, Arundo donax, European Lu Di, Shi Lu, flower calamus, floral leaf Canna generalis Bailey, Rush, do and bend dish or parasol grass.
9. the method that adopts each described Sewage treatment systems of claim 1～8 to dispose of sewage is characterized in that, when raw waste water COD is lower than 300mg/l, adopts the pre-treatment of coagulating sedimentation mode; When raw waste water COD is higher than 400mg/l, adopt the high-rate filter mode; When being higher than 500mg/l, adopts raw waste water COD the anaerobic fixed film reactor mode.
10. adopt the described method of claim 9, it is characterized in that, water level is set to 20～40cm in the ditch, and flow velocity is controlled at 0.03～0.07m/s, and (hydraulic load of 5m * 120m) is controlled in the 270m3/h each processing unit.
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Cited By (16)
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| CN1312059C (en) * | 2004-12-13 | 2007-04-25 | 云南大学 | Artificial wet land treating method and its equipment for life waste water |
| CN1314604C (en) * | 2004-12-14 | 2007-05-09 | 四川国策环保实业工程股份有限公司 | Highland and severe cold areas sewage treatment method |
| CN100384763C (en) * | 2006-04-28 | 2008-04-30 | 浙江大学 | Artificial ecological waste water treating device |
| CN100460344C (en) * | 2007-03-14 | 2009-02-11 | 北京锦绣大地农业股份有限公司 | Artificial marshland composite vegetation water treatment system |
| CN103936168A (en) * | 2014-05-13 | 2014-07-23 | 贵州大学 | In-situ ecological restoration method of acid mine drainage (AMD) pollution lake/reservoir water body |
| CN105502844A (en) * | 2016-01-21 | 2016-04-20 | 李宇花 | Advanced treatment method for removing mineral oil in industrial waste water |
| CN105502858A (en) * | 2016-02-25 | 2016-04-20 | 倪海霞 | Method for treating industrial wastewater with oil and heavy metal |
| CN105541037A (en) * | 2016-01-21 | 2016-05-04 | 李宇花 | Advanced treatment system for removing mineral oil from industrial wastewater |
| CN105585224A (en) * | 2016-03-04 | 2016-05-18 | 温州泓呈祥科技有限公司 | Treatment system for removing heavy metals in industrial wastewater |
| CN105600867A (en) * | 2016-03-04 | 2016-05-25 | 温州泓呈祥科技有限公司 | Treatment method for removing heavy metal in industrial wastewater |
| CN105731727A (en) * | 2016-02-25 | 2016-07-06 | 倪海霞 | System for treating heavy metal industrial wastewater containing oil |
| CN106396114A (en) * | 2016-10-31 | 2017-02-15 | 北京林业大学 | Method for purifying water body by using plant combination |
| CN107445306A (en) * | 2017-09-27 | 2017-12-08 | 湖南匡楚科技有限公司 | A kind of processing system and its method using a variety of pasture and water sewage comprehensivelies and sludge |
| CN109231485A (en) * | 2018-09-30 | 2019-01-18 | 广东中林建筑园林工程有限公司 | Domestic sewage processing system |
| CN111439902A (en) * | 2020-06-16 | 2020-07-24 | 湖南美源环保股份有限公司 | Agricultural non-point source pollution treatment equipment and method |
| CN114349181A (en) * | 2022-01-05 | 2022-04-15 | 郑州轻工业大学 | Non-energy-consumption oxygenation constructed wetland system, operation method and application |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19755527C2 (en) * | 1997-12-13 | 2000-06-15 | Biolog Biotechnologie Und Logi | Process and device for mechanical / biological wastewater treatment |
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2003
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| CN1312059C (en) * | 2004-12-13 | 2007-04-25 | 云南大学 | Artificial wet land treating method and its equipment for life waste water |
| CN1314604C (en) * | 2004-12-14 | 2007-05-09 | 四川国策环保实业工程股份有限公司 | Highland and severe cold areas sewage treatment method |
| CN100384763C (en) * | 2006-04-28 | 2008-04-30 | 浙江大学 | Artificial ecological waste water treating device |
| CN100460344C (en) * | 2007-03-14 | 2009-02-11 | 北京锦绣大地农业股份有限公司 | Artificial marshland composite vegetation water treatment system |
| CN103936168A (en) * | 2014-05-13 | 2014-07-23 | 贵州大学 | In-situ ecological restoration method of acid mine drainage (AMD) pollution lake/reservoir water body |
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