CN103319050B - Ecological safety purifying method for sewage of rivers and channels - Google Patents
Ecological safety purifying method for sewage of rivers and channels Download PDFInfo
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Abstract
The invention provides an ecological safety purifying method for sewage of rivers and channels. Sequentially flowing ecological safety purifying units are formed by sewage of rivers and channels through a multilevel sewage matrix sand leach vegetation pond with bottom seepage-proofing and lateral filtering functions, a bottom anaerobic layer, a middle oxygen layer and a surface aerobiotic undercurrent channel by using potential/siphon energy and the like as a main energy. Each ecological safety purifying unit consists of an inlet, a sewage matrix sand leach vegetation pond, a bottom undercurrent port, an upper undercurrent port, a flow outlet and an advection plane of a plant fiber surface layer. According to the ecological safety purifying method for sewage of rivers and channels provided by the invention, no active sludge is generated, and sewage can be converted into resources in situ, so that the ecological environmental quality is improved, and the health of the ecological system of the field is protected. The method is low in cost and energy consumption, operates automatically, and contributes to fixing carbon in climate change, absorbing carbon dioxide, improving the microclimate quality and the like. The method is beneficial for safe construction of the ecological environment.
Description
Technical field
The invention belongs to sewage disposal technology, be specifically related to a kind of river ditch polluted water ecological security purifying method.
Background technology
Along with the development of industrial or agricultural and improving constantly of living standards of the people, the contradiction between environmental pollution and Economic development becomes and becomes increasingly conspicuous, the public hazards that wherein water pollution causes, and all pay much attention to countries in the world, proposes many Preventing Countermeasures and treatment technology.
The Chinese government, in order to solve the problem of resource environment restriction Economic development, does not loosen the paces of environmental improvement all the time, does not stint and takes the way of fund repulsive-type maglev, solves environmental problem.The conservative estimation of tool related data, nearly ten years, China was used for total input of environmental protection about 4,000,000,000,000 left and right, and environment does not still have large change.Why there is such result, " the poor efficiency disease " of not exclusively dropping into owing to environmental protection, should drop into high, big energy-consuming owing to traditional wastewater treatment technology, overhead charges are high, management difficulty is large, water quality treatment is dangerous and lignin-sludge secondary pollution problem is many etc. more.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of low cost, less energy-consumption, operation automatically, do not produce active sludge, can realize the river ditch polluted water ecological security purifying method of the conversion of original position resource, the quality of improving the ecological environment, the ecosystem health that protects the fields.
For solving the problems of the technologies described above, embodiments of the invention provide a kind of river ditch polluted water ecological security purifying method, river ditch polluted water possesses bottom antiseepage, side direction and can filter sewage matrix sand filtration vegetation pond, bottom anaerobism, middle level after function treatment hold concurrently oxygen, top layer aerobic undercurrent ditch through multistage, can wait natural energy as main taking gesture/siphon, form sequential mobile ecological security clean unit.Described in each ecological security clean unit by entrance, sewage matrix sand filtration vegetation pond, bottom undercurrent mouth, upper strata undercurrent mouth, go out head piece and plant fibrous root top layer advection face forms.
Wherein, described plant fibrous root top layer advection face is implanted fibrous root plant.
Wherein, 1.5～2 meters of the degree of depth of described ecological security clean unit, 0.8～1 meter of width, 3.0 meters of length.
Wherein, 0.5 meter of the degree of depth in described sewage matrix sand filtration vegetation pond, 0.8～1 meter of width, 1.5 meters of length.
Wherein, the vegetation that described ecological security clean unit is implanted into and the animals and plants population of growth and breeding have the ecological economics and are worth, and also possess the instruction value of metabolism toxicology, ecological engineering toxicology and genetic toxicology index and the using value of evaluating water quality toxicity.
Wherein, between multistage described ecological security clean unit, there is the cognation that inherent ecological security purifies.
Wherein, multistage described ecological security clean unit forms, can make easy degradation of contaminant carry out resource utilization degraded, also can make persistent pollutant obtain ecological security degraded and utilize, there is the unit combination of prevention and control and reparation surface water, underground water and soil pollution function.
Wherein, the Special composition of multistage described ecological security clean unit, can meet the condition of processing requirement, carries out the resource recycling utilization of water quality, the unit combination of sewage effluent downstream not.
Wherein, the space that multistage described ecological security clean unit forms, can not meet implement the Ecological Disposal speed of engineering and processed water quality in the speed that is degraded of persistent pollutant matter while reaching balance, what discharged in waters downstream should be ecological security water quality, not cause the genetic toxicology index of control group biological species natural mutation rate as standard, realize the unit combination of the safe recycle of region of water resources.
Wherein, the engineering space that multistage described ecological security clean unit is formed in enforcement Ecological Disposal can not meet processed discharge requirement, again lower than the degradation rate of persistent pollutant matter, can't meet the inerting of toxic heavy metal class material, while assimilating into the requiring of renewable resource, can take to get involved intervening measure, reach the unit combination of the object of discharge after water quality safety is processed.
The beneficial effect of technique scheme of the present invention is as follows:
In such scheme; do not produce active sludge and can realize original position resource and transform; the quality of improving the ecological environment; the health of the ecosystem protects the fields; low cost, less energy-consumption, automatically operation; to the carbon solidification effect in climate change and absorbing carbon dioxide, improve miniclimate quality etc. and have contribution, be conducive to the Security Construction of ecotope.
Brief description of the drawings
Fig. 1 is the structural representation of ecological security clean unit in the embodiment of the present invention.
Description of reference numerals:
1, entrance; 2, sewage matrix sand filtration vegetation pond; 3, bottom undercurrent mouth; 4, upper strata undercurrent mouth; 5, go out head piece; 6, plant fibrous root top layer advection face.
Embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
A kind of river ditch polluted water ecological security purifying method, river ditch polluted water possesses bottom antiseepage, sidepiece and can filter sewage matrix sand filtration vegetation pond, bottom anaerobism, middle level after function treatment hold concurrently oxygen, top layer aerobic undercurrent ditch through multistage, can wait natural energy as main taking gesture/siphon, form sequential mobile ecological security clean unit, described in each ecological security clean unit by entrance 1, sewage matrix sand filtration vegetation pond 2, bottom undercurrent mouth 3, upper strata undercurrent mouth 4, go out head piece 5 and plant fibrous root top layer advection face 6 forms, as shown in Figure 1.
Described plant fibrous root top layer advection face 6 is implanted fibrous root plant.
In the present embodiment, 1.5～2 meters of the degree of depth of described ecological security clean unit, 0.8～1 meter of width, 3.0 meters of length.
0.5 meter of the degree of depth in described sewage matrix sand filtration vegetation pond 2,0.8～1 meter of width, 1.5 meters of length.
The vegetation that described ecological security clean unit is implanted into and the animals and plants population of growth and breeding have the ecological economics and are worth, and also possess the instruction value of metabolism toxicology, ecological engineering toxicology and genetic toxicology index and the using value of evaluating water quality toxicity.
Between multistage described ecological security clean unit, there is the cognation that inherent ecological security purifies.
Multistage described ecological security clean unit forms the resource utilization degraded that makes easy degradation of contaminant, also can make persistent pollutant can obtain ecological security degraded and utilize, and has prevention and control and the unit combination of repairing surface water, underground water and soil pollution function.
Multistage described ecological security clean unit forms can carry out the resource recycling utilization of water quality, the unit combination of sewage effluent downstream not under the condition that meets processing requirement.
When multistage described ecological security clean unit is formed in and can not meets the speed that is degraded of implementing persistent pollutant matter in the Ecological Disposal speed of engineering and processed water quality and reach balance, what discharged in waters downstream should be ecological security water quality, not cause the genetic toxicology index of control group biological species natural mutation rate as standard, can realize the unit combination of water resources cyclically utilizing.
The engineering space that multistage described ecological security clean unit is formed in enforcement Ecological Disposal can not meet processed discharge requirement, again lower than the degradation rate of persistent pollutant matter, can't meet the inerting of toxic heavy metal class material, while assimilating into the requiring of renewable resource, can take the unit combination that gets involved intervening measure, reaches water quality safety processing intent.
Dyeing waste water, the industrial wastewater from furfural production of river provided by the invention ditch polluted water ecological security purifying method to surface water, underground pollution all done multiple vegeto-animal toxicology and detected and the toxicologic checking of ecological engineering.
Experiment one:
Experimental design model:
1. the investigation of flowing water pollution ecological effect and PFU microcosm cyclicity ecosystem design model;
2. state feedback pressure-adjusting type encloses filter ecosystem standard " middle universe " experimental model;
3. close non-compensated aquatic ecosystem experimental model;
4. encircle offset-type aquatic ecosystem experimental model.
Solid support material and device: impervious material, water distributor, degradation property proportioning carrier, the ecological percolating device of saturation type, potential energy stream ooze device.
Investigation water quality: polluted river water polluted river waters such as () papermaking, printing and dyeing, chemical industry, leather, steel mill and power plant, printing and dyeing, paper mill and furfural chemical plant process before waste water.
Contrast water: tap water, deionized water.
Investigation exposes object: 1. animal: zebra fish, Poecilia etc.; Small white mouse, miniature organism kind; Tubificid, water flea etc.2. plant: broad bean, pea, wheat, leek, goat's horn crescent moon algae, hornwort, rare floating pulse duckweed, duckweed spirodela, wild plant class etc.
Leading indicator: 6 months life cycle lethality rate statistic curves; Genotoxicity (lopsided fish); Genetoxic (mouse bone marrow cells micronuclear rates and chromosome aberrations rate); Water flea is survival time and intrinsic growth power from generation to generation; Food chain enriching heavy metal (Cu, Pb, Cd) detects; CODcr; BOD5, specific conductivity, chlorophyll a, the correlationship of sedimental biomass indexes, physical and chemical index and Biological indicators after PFU metabolism etc.
Experimental result:
The ecology of waste water contamination control experiment grouping in table 1. furfural chemical pollution wastewater degradation carrier
| Group | (amount=value g) in unit volume original bulk--termination for result |
| A1(has implantation plant) | 300-210g/ unit volume carrier amount=-90 |
| B1(has implantation plant) | 300-295g/ unit volume carrier amount=-5 |
| A2(has implantation plant) | 300-240g/ unit volume carrier amount=-60 |
| B2(is without implanting plant) | 300-350g/ unit volume carrier amount=+ 50 |
| A3(has implantation plant) | 300-290g/ unit volume carrier amount=-10 |
| B3(is without implanting plant) | 300-350g/ unit volume carrier amount=+ 50 |
Note: 1, A group (input organic contamination water quality CODcr=664-17700mg/l);
2, B group (input tap water CODcr < 15mg/l contrast, pH=4.8);
3, filter into order: A1 → A2 → A3 → A1; B1 → B2 → B3 → B1.
The CODcr detected result that table 2. ecosystem sewage exposes
Note: 1, A group: sewage B group: tap water;
2, choose water sample condition: belong to same batch, CODcr value is the water sample of concentration gradient; In control group (B2-is table 4 2.), do fish lethality simultaneous test with CODcr Schwellenwert water sample;
3,1. 2. 3. 4.: be same sample CODcr detection batch successively;
4, runic numeral is chosen as experiment fish contamination water sample;
5.10 months 9 days 14:00---14:05 respectively organize and throw in the juvenile fish observation of raising and train 10 days.
Conclusion:
Ecological niche Pollution exposure " plant implantation group " in experiment one reduces approximately 16.7% compared with the total weight of carrier of " clean control group " without plant growing.Show: part pollutent wherein, through inorganicization degraded, has at least a part to assimilate as plant life body, a part is by rising volatilization.Settling can be held back and change into resource by original position, can save the desilting fund of river irrigation canals and ditches and the associated cost of mud strange land harmless treatment.
Experiment two: before furfural chemical plant is processed, waste water has successively carried out the processing about 30 days, test and mine tailings by a definite date.
CODcr value shows: " easily degraded " average daily degradation rate of pollutent is 2503.286mg/L/ day (7d); " compared with difficult degradation " pollutent day, degradation rate was 500.086mg/L/ day (35d); " difficult degradation " pollutent day, degradation rate was 27.62mg/L/ day (29d), illustrated that utilizing ecological engineering toxicology principle to carry out ecological resources reparation has important value.
The juvenile fish survival time of A3 pollution group is more than the number of days of tap water group survival, has also proved the meaning of the VA bacterium in plant-growth to catabolism toxicity.
Experiment three: in the non-compensated tap water ecosystem of closure control group, the life cycle experiment of carrying out is found, the breeding of tested fingerling presents negative growth trend, after breeding 28 tails from 5 pairs of female milters, continue this experiment, present subtrahend breeding trend, female 1 hero of finally to 4 (6 months cycles).Changing into after the circulation offset-type tap water ecosystem, by 4 female 1 heros, breeding, to the 4th generation, presents proliferative trend, breed to 46 tail juvenile fish (8 months cycles), but the while has also been observed the prelarva of two tails " conjuncted deformities ".
Closed non-compensation model presentation of results: in the time that metabolism toxicity is larger, can make the breeding potential of tested fish decline.And compensation cycle model can reduce metabolism toxicity effectively, observe but increased the probability that lopsided fish occurs.
River provided by the invention ditch polluted water ecological security purifying method does not produce active sludge; and can realize original position resource transforms; the quality of improving the ecological environment; the health of the ecosystem protects the fields; low cost, less energy-consumption, automatically operation; to the carbon solidification effect in climate change and absorbing carbon dioxide, improve miniclimate quality etc. and have contribution, be conducive to the Security Construction of ecotope.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (1)
1. a river ditch polluted water ecological security purifying method, it is characterized in that, river ditch polluted water possesses bottom antiseepage, side direction and can filter sewage matrix sand filtration vegetation pond, bottom anaerobism, the middle level of function treatment hold concurrently oxygen, top layer aerobic undercurrent ditch through multistage, can be as main taking gesture/siphon, form sequential mobile ecological security clean unit, described in each ecological security clean unit by entrance, sewage matrix sand filtration vegetation pond, bottom undercurrent mouth, upper strata undercurrent mouth, go out head piece and plant fibrous root top layer advection face forms;
Wherein, described plant fibrous root top layer advection face is implanted fibrous root plant;
Wherein, 1.5～2 meters of the degree of depth of described ecological security clean unit, 0.8～1 meter of width, 3.0 meters of length;
Wherein, 0.5 meter of the degree of depth in described sewage matrix sand filtration vegetation pond, 0.8～1 meter of width, 1.5 meters of length;
Wherein, the vegetation that described ecological security clean unit is implanted into and the animals and plants population of growth and breeding, both there is the ecological economics and be worth, also possessed the instruction value of metabolism toxicology, ecological engineering toxicology and genetic toxicology index and the using value of evaluating water quality toxicity;
Wherein, the engineering space that multistage described ecological security clean unit forms, the Ecological Disposal space of implementing, can not meet processed discharge requirement, lower than the degradation rate of persistent pollutant matter, can't meet the inerting of toxic heavy metal class material again, while assimilating into the requiring of renewable resource, can take to get involved intervening measure, reach the unit combination of the object of discharge after water quality safety is processed.
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| CN105836895A (en) * | 2016-06-12 | 2016-08-10 | 广西飞扬环保科技有限公司 | Integrated sewage purification system |
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| CN100398465C (en) * | 2007-07-13 | 2008-07-02 | 北京市水利科学研究所 | Composite artificial marshland water quality clarification system in north low-temperature area |
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