CN203904141U - System for efficient ecological water purification through organic composite soil - Google Patents

System for efficient ecological water purification through organic composite soil Download PDF

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Publication number
CN203904141U
CN203904141U CN201420088635.7U CN201420088635U CN203904141U CN 203904141 U CN203904141 U CN 203904141U CN 201420088635 U CN201420088635 U CN 201420088635U CN 203904141 U CN203904141 U CN 203904141U
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China
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water
layer
infiltration
stratum
soil
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Withdrawn - After Issue
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CN201420088635.7U
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Chinese (zh)
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覃树松
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GUANGZHOU GELIN ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
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GUANGZHOU GELIN ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
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Abstract

The utility model discloses a system for efficient ecological water purification through organic composite soil. The system comprises a wall body and a filter bed in the wall body, wherein a surface layer water distribution pipe is arranged above the wall body, and a water outlet is arranged below the wall body; the filter bed is divided into a plant growth area, a primary sand filter layer, a rapid infiltration layer, a water retaining layer, a slow infiltration layer and a water outlet layer sequentially from top to bottom. A purification process of the system adopts a wetting and drying alternating method and is divided into four periods, namely, a water-inlet rapid-infiltration period, a water-retaining slow-infiltration period, a slow-infiltration deep-purification period and a non-occupation recovery period, and the four periods can be conducted circularly. The system has the advantages that the system is small in occupied area, high in shock load resistance, stable in water outlet, short in construction period, low in manufacturing cost, little in infrastructure investment, convenient to maintain and manage, low in operating cost, low in secondary pollution (extremely low in sludge yield), good in ecological landscape benefit, suitable for large-area popularization for domestic sewage treatment of rural and suburban areas and also applicable to organic pollution remediation and pollution control on water bodies such as small rivers, lakes and the like.

Description

A kind of organic composite soil efficient ecological water cleaning systems
Technical field
The utility model belongs to the purification treatment technology field of low-concentration organic wastewater, especially a kind of organic composite soil efficient ecological water cleaning systems that is applicable to rural area and suburban area sewage disposal.
Background technology
Rural area and suburban area water damage ratio are severeer at present, but because planning lags behind, its sewage disposal still belongs to the starting stage, has many problems, and reason is: the one, and construction fund famine; The 2nd, people's attention degree is inadequate; The 3rd, lack the sewage disposal technology that is applicable to rural areas in our country reality.Villages and small towns sewage treatment process is except conventional traditional activated sludge process, apply more technology and have artificial swamp (comprising surface low, vertical current and undercurrent), Rapid Infiltration Treatment System, subsurface infiltration treatment system, purification tank technology, methane-generating pit technology, wherein artificial swamp and the application of oxidation pond treatment process are comparatively general, oxidation pond technique is applicable to process the sewage that pollution level is lower, but has the problem that anti impulsion load is poor, occupation of land is large, processing efficiency is low.Though artificial swamp has, counter investment cost is little, working cost is low, running maintenance technical requirements is not high, can the feature such as build in conjunction with view, but have equally the defect that floor space is large, processing load is low, anti impulsion load is poor, and not too inconvenience of maintenance and management.
Summary of the invention
For the deficiencies in the prior art, it is a kind of to country sewage and the general middle extremely strong new treatment process of low-concentration organic wastewater treatment technology suitability that the utility model provides, and can overcome the problem such as artificial swamp, traditional soil treatment technique and oxidation pond technique floor space is large, economic benefit is low, difficult in maintenance, anti impulsion load is poor, easy obstruction.
The technical solution of the utility model is: a kind of organic composite soil efficient ecological water cleaning systems, comprise the filter bed in body of wall and body of wall, described body of wall top is provided with surface cloth water pipe and body of wall below is provided with water outlet, it is characterized in that: described filter bed is divided into plant-growth district, elementary sand filter blanket, fast infiltration layer, aqueous stratum, slow infiltration layer and water-yielding stratum from top to bottom successively.
Described elementary sand filter blanket is fine sand layer, is highly 4 ~ 6 cm; The inert filler layer of fast infiltration layer for being formed by original soil and the organic natural material of inertia, fast alloying layer thickness is 40 ~ 60cm; Aqueous stratum is the coarse sands layer that is built-in with resistance to compression water-permeable pipe, and aqueous stratum is provided with the respiratory siphon that stretches out elementary sand filter blanket surface, and aqueous stratum thickness is 15 ~ 30 cm; The mixolimnion of slow infiltration layer for being formed by original soil and the organic natural material of inertia, floor height is 40 ~ 60cm; Water-yielding stratum is the coarse sand fine sand mixolimnion that is built-in with resistance to compression water-permeable pipe, water outlet floor height 15 ~ 25 cm, and water-yielding stratum below is provided with anti seepage membrane; Filter bed total height is 114 ~ 181cm, and body of wall is higher than elementary sand filter blanket 30 ~ 40 cm, and total height is controlled at 144 ~ 221cm.
Described plant can select to have the non-directly edible cash crop such as terrestrial plant hybrid giant napier, napier grass of economic worth, or has the ornamental plant such as chrysanthemum, Canna generalis Bailey, fairy bamboo, iris of the effect of well viewing and admiring.
The utility model also provides a kind of purifying method of organic composite soil efficient purifying system, it is characterized in that: the mode that adopts alternation of wetting and drying, be divided into four cycles that can loop: water inlet is oozed soon phase, retaining and oozed slowly the phase, oozes deep purifying phase and vacant decubation slowly, and detailed process is:
1, water inlet is oozed the phase soon: former water is promoted and flowed into treatment zone by gravity or pump, for avoiding breathing poisoning because of immersion to terrestrial plant, water inlet height general control is below 30cm, under action of gravity, sewage oozes from top to down under fast infiltration layer carries out fast, sewage adsorb the suspended substance of the overwhelming majority wherein and solubility pollutent to clear up purification by the powerful absorption of fast infiltration layer and interception capacity, completes surperficial solid carbon dioxide simultaneously in 60 minutes, and the water of infiltration layer processing drops to aqueous stratum soon;
2, retaining is oozed the phase slowly: due to aqueous stratum there is larger space and infiltration rate fast, and slow infiltration layer infiltration rate is slower, in the slow infiltration layer of water in aqueous stratum, carry out vertical seepage flow, form the negative pressure of main liquid level top, air enters soil under condition of negative pressure, increase the oxygen level of soil, for the rapid-digestion of soil microorganisms and the breathing of root system of plant provide good condition;
3, ooze slowly the deep purifying phase: water carries out lentamente vertical seepage flow in slow infiltration layer, thereby under the effect of soil and microorganism, fully remove the pollutent in water and reach emission level;
4, vacant decubation: water is discharged through water outlet after dropping to water-yielding stratum, after draining completes, soil enters vacant decubation, the pollutent adsorbing in soil is completed and is cleared up and absorb by the acting in conjunction of microorganism and root system of plant, and this process soil air environment and atmospheric gas pressure reach balance gradually.
In general, the number of times of alternation of wetting and drying is more, and the treatment effect of system is better, and processing efficiency is higher.In said process, the Main Function of aqueous stratum has: the one, guarantee the lower infiltration rate degree of fast infiltration layer, and to avoid sewage stop and cause plant respiration poisoning upper soll layer is long-time, ensure to greatest extent the good breathing environment of terrestrial plant; The 2nd, play dash adjustment effect, extend the residence time of sewage in soil, to guarantee wastewater purifying efficiency; The 3rd, increase oxygen level in soil, further enrich kind and the quantity of aerobic bacteria, further improve COD degradation efficiency, be also greatly beneficial to that ammonia nitrogen is denitrifying to carry out simultaneously.
Principle of work of the present utility model is: sewage dosing, after filter bed, is risen along soil capillary, absorbs a series of effects such as absorption, microorganism decomposition utilization and plant absorption by physics detention, the soil of soil, and the organism in sewage is removed.Wherein the activity of soil microorganisms is very important, under the effect of microorganism, is decomposed and changes into inorganics through biochemical reaction, and this is the critical process of removing organic pollutant.Herbaceous plant is also the important channel of sewage purification to the absorption of nutritive element.Nitrogen, phosphorus etc. in sewage, as the necessary nutrient of plant-growth, is absorbed and used by root system of plant, is moved out of system and reaches the object removing in the time mowing.Frequent pruning plant can make the removal amount of nutritive element reach maximum.The growth of plant simultaneously has also greatly changed the envrionment conditions of sewage treatment process.Because root system of plant gos deep into soil and increases the soil organism, both improved the waterpower osmosis speed of soil, also contribute to create the microenvironment in a good roots of plants district, be conducive to microorganism to the degraded of polluting.
The beneficial effects of the utility model are:
1, floor space is little, anti impulsion load is high: reoxygenation efficiency has been brought high treatment efficiency efficiently, one square metre takes up an area the maximum sanitary sewage that can process two cubic metres, and reach 1500mg/L at inlet COD concentration, still can remain on 80% removal efficiency, this be artificial swamp and general aerobic biochemical technique can not and.
2, adopt ripe earth working material, without carry out a large amount of rock ballasts and gravel cleaning as artificial swamp engineering, also without large-scale reinforced concrete pouring construction, short construction period, cost is low, initial cost is few, and has the crop of higher economic worth by plantation, can create good economic benefit.
3, Personnel Skill Levels is required low, maintenance management is convenient, and operation cost is low; except the short period of time of water inlet phase; earth's surface is dry state, and sanitary condition is good, for small-sized country sewage; even if physical features is comparatively low-lying; also only need once promote, power consumption is little, again because a large amount of original soils that adopt carry out organic configuration backfill; the multiple cropping of taking up an area is very convenient, has protected arable land.
4, secondary pollution low (sludge creation amount is minimum), ecoscape benefit are good, be suitable for carrying out spread in the sanitary sewage disposal of rural area and suburban area, be also suitable for the organic contamination reparation of general water body (as small rivers and lake) and pollute and control.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure, 1-respiratory siphon, 2--plant-growth district, the elementary sand filter blanket of 3--, the fast infiltration layer of 4--, 5-aqueous stratum, the slow infiltration layer of 6-, 7-water-yielding stratum, 8-body of wall, 9-anti seepage membrane, 10-surface cloth water pipe.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
As shown in Figure 1, organic composite soil efficient ecological water cleaning systems provided by the utility model, comprise the filter bed in body of wall 8 and body of wall 8, body of wall 8 tops of antiseepage are provided with surface cloth water pipe 10 and body of wall 8 belows are provided with water outlet, and filter bed is divided into plant-growth district 2, elementary sand filter blanket 3, fast infiltration layer 4, aqueous stratum 5, slow infiltration layer 6 and water-yielding stratum 7 from top to bottom successively.
Wherein elementary sand filter blanket 3 height are 5CM, taking fine sand as main material; Fast infiltration layer 4 is for to be made up of original soil and the organic natural material of inertia, and fast infiltration layer 4 thickness are 60cm; Aqueous stratum 5 is taking resistance to compression water-permeable pipe and configure coarse sand as matrix, and aqueous stratum 5 is provided with the respiratory siphon 1 that stretches out elementary sand filter blanket 3 surfaces, and aqueous stratum 5 thickness are 30 cm; Slow infiltration layer 6 is made up of original soil and the organic natural material of inertia, and floor height is 60cm; Water-yielding stratum 7 taking resistance to compression water-permeable pipe and configure coarse sand and fine sand as matrix, and below matrix, be provided with anti seepage membrane 9, high 20 cm of water-yielding stratum 7; Filter bed total height is 175cm, and body of wall 8 is higher than elementary sand filter blanket 35 cm, and filter tank height overall is controlled at 210 cm; Plant can be selected the plants and flowers such as the herbage such as hybrid giant napier, napier grass or chrysanthemum, Canna generalis Bailey, fairy bamboo, iris.
Scavenging process of the present utility model adopts the mode of alternation of wetting and drying, is divided into four cycles that can loop: water inlet is oozed soon phase, retaining and oozed slowly the phase, oozes deep purifying phase and vacant decubation slowly, and detailed process is:
1, water inlet is oozed the phase soon: former water is promoted and flowed into treatment zone by gravity or pump, for avoiding breathing poisoning because of immersion to terrestrial plant, water inlet height general control is below 30cm, under action of gravity, sewage oozes from top to down under fast infiltration layer carries out fast, sewage is adsorbed the suspended substance of the overwhelming majority wherein and solubility pollutent to clear up purification by the powerful absorption of fast infiltration layer and interception capacity, in 60 minutes, left and right completes surperficial solid carbon dioxide simultaneously, and the water of fast infiltration layer processing drops to aqueous stratum 4;
2, retaining is oozed the phase slowly: due to aqueous stratum 4 there is larger space and infiltration rate fast, and slow infiltration layer 6 infiltration rates are relatively slow, water in aqueous stratum 5 carries out vertical seepage flow in slow infiltration layer 6, this process forms the negative pressure of main liquid level top, air enters soil under condition of negative pressure, increase the oxygen level of soil, for the rapid-digestion of soil microorganisms and the breathing of root system of plant provide good condition;
3, ooze slowly the deep purifying phase: water carries out lentamente vertical seepage flow in slow infiltration layer 6, thereby under the effect of soil and microorganism, fully remove the pollutent in water and reach emission level;
4, vacant decubation: water is discharged through water outlet after dropping to water-yielding stratum 7, after draining completes, soil enters vacant decubation, the pollutent adsorbing in soil is completed and is cleared up and absorb by the acting in conjunction of microorganism and root system of plant, this process soil air environment and atmospheric gas pressure balance gradually, the time is about three hours.
In the time processing general sanitary sewage, land used load of the present utility model is about at 1 m 3sewage/1m 2take up an area, more than filtering layer significant depth reaches 1m, intake daily periodicity three to four times, test shows repeatedly, and its Inlet and outlet water can be stabilized in the effect in table 1.

Claims (3)

1. an organic composite soil efficient ecological water cleaning systems, comprise the filter bed in body of wall and body of wall, described body of wall top is provided with surface cloth water pipe and body of wall below is provided with water outlet, it is characterized in that: described filter bed is divided into plant-growth district, elementary sand filter blanket, fast infiltration layer, aqueous stratum, slow infiltration layer and water-yielding stratum from top to bottom successively.
2. organic composite soil efficient ecological water cleaning systems according to claim 1, is characterized in that: described elementary sand filter blanket is fine sand layer, is highly 4 ~ 6 cm; The inert filler layer of fast infiltration layer for being formed by original soil and the organic natural material of inertia, fast alloying layer thickness is 40 ~ 60cm; Aqueous stratum is the coarse sands layer that is built-in with resistance to compression water-permeable pipe, and aqueous stratum is provided with the respiratory siphon that stretches out elementary sand filter blanket surface, and aqueous stratum thickness is 15 ~ 30 cm; The mixolimnion of slow infiltration layer for being formed by original soil and the organic natural material of inertia, floor height is 40 ~ 60cm; Water-yielding stratum is the coarse sand fine sand mixolimnion that is built-in with resistance to compression water-permeable pipe, water outlet floor height 15 ~ 25 cm, and water-yielding stratum below is provided with anti seepage membrane; Filter bed total height is 114 ~ 181cm, and body of wall is higher than elementary sand filter blanket 30 ~ 40 cm, and total height is controlled at 144 ~ 221cm.
3. organic composite soil efficient ecological water cleaning systems according to claim 1, is characterized in that: described plant can be selected hybrid giant napier, the napier grass in terrestrial plant, or chrysanthemum, Canna generalis Bailey, fairy bamboo, iris.
CN201420088635.7U 2014-02-28 2014-02-28 System for efficient ecological water purification through organic composite soil Withdrawn - After Issue CN203904141U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103803762A (en) * 2014-02-28 2014-05-21 广州格淋环境保护技术有限公司 Organic composite soil high-efficiency ecological water purification system
CN104652723A (en) * 2015-02-11 2015-05-27 北京建筑大学 Rainwater treatment system for single-twist continuous arch covering and treatment method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103803762A (en) * 2014-02-28 2014-05-21 广州格淋环境保护技术有限公司 Organic composite soil high-efficiency ecological water purification system
CN104652723A (en) * 2015-02-11 2015-05-27 北京建筑大学 Rainwater treatment system for single-twist continuous arch covering and treatment method
CN104652723B (en) * 2015-02-11 2017-11-07 北京建筑大学 A kind of continuous arch rain water on roof processing system of single and processing method

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C25 Abandonment of patent right or utility model to avoid double patenting
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Granted publication date: 20141029

Effective date of abandoning: 20160413