CN2887855Y

CN2887855Y - Ecological backflow artificial filter bed

Info

Publication number: CN2887855Y
Application number: CNU2006200396264U
Authority: CN
Inventors: 翁杰; 吴国华; 陈洽群; 沈桑杰; 杜世龙
Original assignee: Shanghai Nanyang Model High School
Current assignee: Shanghai Nanyang Model High School
Priority date: 2006-02-21
Filing date: 2006-02-21
Publication date: 2007-04-11
Anticipated expiration: 2016-02-21

Abstract

The utility model relates to a synusiologic backflow manual filtrating bed. The procedures of producing the filtrating bad are: A, a terrace-shaped strip with peg stakes is formed on the side slope of riverway or pond; B, a layer of perforated film is covered over the original riverbed of the segregated district, and a layer of soil is covered; C, mixture of crushed coal gangue and soil are filled into the area segregated from the main water, and then large block of coal gangue is used at the outside. If enough coal gangue is not obtained, other filling material as zeolite, quartz sand and pottery grain are used to make the outer layer higher than the water level of the riverway; D, a crisscross or 'JING' (like a Chinese character) shaped gutter is cut on the mesa of terrace shape. and then a planting pit is excavated at the junction spots of the gutter; E, within 20-40 cm of the pit centred the plant, and then soil, mixture of soil and coal gangue, coal gangue or other mixed materials are filled in turnfrom the inner to the outside and a layer of discontinuous buffering material of foam plastic can be added between the two outset layers if necessary.

Description

The artificial filter bed of a kind of ecological refluxing

Technical field

The utility model relates to the artificial filter bed of a kind of ecological refluxing, belongs to environmental protection or afforestation and plant cultivation technology class.

Background technology

Equalizing bed and filter bed are to administer greening contamination governing method commonly used in the polluted river channel, but are main stuffing with pebbles, zeolite, haydite, quartzite etc. directly mostly at present.Be difficult to growth owing to fill out the filler hardness of bed and filter bed root system big, that compact structure makes the filter bed plant; Simultaneously owing to be in order to allow filter bed plant absorbing eutrophication material, so scarcely the filter bed plant is applied nutriment.This just causes can making in some cases the filter bed plant to lack the necessary nutriment of a part, causes the stem of filter bed plant and the hardness of leaf to descend, and resists gravitational ability and reduces.More than two big reasons finally cause long plant thereon to lodge easily, rot, and cause secondary pollution.

Therefore; for in the enforcement of river course, pond and wetland and urban look waters periphery greening pollution treatment engineering; how to change the common method of marrying again with polluted water and purify water scenery; how to turn waste into wealth, utilize abandoned mine product---coal gangue; build the plant growing environment that not only helps plant-growth but also can be of value to environment protection, just become a kind of expectation of environment and Gardener author.

The utility model content

The purpose of this utility model: be intended to propose a kind of scheme that is suitable for the river course, carries out the environmental protection pollution treatment, purifies water around wetland, pond or the urban look waters in a big way; wish to help the cultivation of plants growth; can purify again and the conservation of nature ecotope; can also utilize the abandoned mine product---the characteristic of coal gangue; can absorb polluted matter; can slowly provide main nutrient such as several mineral materials and nitrogen, phosphorus, potassium to plant again, thereby turn waste into wealth.

The artificial filter bed of this ecological refluxing is characterized in that: A, in the river course, the Hu Tangbianpo place crosses terrace type band in the water with timber 1; B, cover one deck apertured film 7 on by the original bed of insulating space, and can also fill out shop one deck earth 8 in the above above-mentioned; C, then in this and the isolated space of main water body, insert with coal gangue or zeolite and be major ingredient, be the mixed fillers 5 of auxiliary material, allow it exceed the river course horizontal plane with soil or quartz sand; D, the waterways of on this terrace type tableland, laying " ten " font or " well " font, excavation is constructed the plantation hole at the node place in waterways; E, at the 20-40cm place of planting the hole that with the plant is the center, with the plant be the center successively outwards filling be respectively earth or earth and coal gangue mixture, bastard coal building stones, zeolite or haydite or quartzite, and their mixture; And can between outermost is two-layer, add the porous plastics fender that one deck is interrupted.

Described

filter bed

10,12 is the bank of spotted in polluted river channel; Simultaneously, in filter bed, settle submersible pump 9 and return line 11, make through the water body after purifying and be back to the upstream from the downstream, river course.

Thisly be suitable for the artificial filter bed that river course, pond, wetland, urban waterscape periphery carry out environmental protection treatment according to what aforesaid method proposed, its advantage is:

1) current can flow in the groined type ditch, can protect the earth in the filter bed not to be flushed away, and can not make that also the filter bed structure becomes very fine and close owing to the impulse force of current;

2) though coal gangue is counted as a kind of abandoned mine, aspect environmental protection and river regulation, do not use at present, make people not recognize its actual value.Abundant soil ulmin and several mineral materials are arranged, the multiple nutriment and the mineral substance that can provide growth to lack for plant in the coal gangue of these residual coals of carrying under one's arms.The stem of filter bed plant and the hardness and the intensity of leaf are recovered, brought into play the value of abandoned mine product.To developing western many this type of so-called abandoned mines positive meaning is arranged.

3) use porous plastics not caused death by protective plant by too fine and close filter bed filler extruding.

4) root system of plant can pass anti seepage membrane and takes root on original dirt bed, can guarantee the length and the degree of depth of plant root like this, makes the plant of plantation be difficult for lodging.

Description of drawings

Accompanying drawing 1 is a terraced fields floor map in the water;

Accompanying drawing 2 is the filter bed schematic cross-sectional view;

Accompanying drawing 3 is that river upstream and downstream filter bed is communicated with synoptic diagram;

Accompanying drawing 4 is the floor map at plant point place.

Among the figure 1, timber 2, riverbank 3, plant 4, river course 5, mixed fillers 6, riverbed 7, apertured film 8, earth 9, submersible pump 10, filter bed 11, return line 12, filter bed

Embodiment

1, selects the smooth riverbank of physical features, in piling continuously in the water at 1 meter, riverbank.

2, in the side slope bottom in riverbed, or the bottom elder generation's layer overlay anti seepage membrane 3 with holes behind a small amount of excavation; And can be at antiseepage rete upper berth one deck earth;

3, in the space that is surrounded by timber 1, insert with coal gangue, zeolite, haydite, quartz and a small amount of argillous mixture earlier, allow it form sand and fill out the tableland that exceeds water surface 20-30cm;

4, on above-mentioned " artificial terrace type " tableland, make up " ditch " of arranging of " ten " font, and plant the hole at intersection's excavation;

5, plant in the hole at the 20-40cm place of planting the hole that with the plant is the center at this, with the plant be the center successively outwards filling be respectively earth or earth and coal gangue mixture, bastard coal building stones, zeolite or haydite or quartzite, and their mixture; And can between outermost is two-layer, add the porous plastics fender that one deck is interrupted.

In actual design, described

filter bed

Build filter bed by downstream, upstream in the river.And on filter bed plantation detergency ability is good, surviving rate is high waterplant (as Scirpus tabernaemontani, calamus, water lily etc.).Insoluble organism in the sewage is by precipitation, the filteration of wetland, is trapped and then by microbiological degradation; Dissolved organic matter then can be by the removal that is decomposed of the biomembranous absorption of root system of plant, absorption and biological metabolism degradation process in the waste water.In maintenance process, find long plant on wetland, lodging easily, rotten, and cause secondary pollution.Why? find that after deliberation because the filler hardness of filter bed is bigger, and the eutrophication of water body is very serious, makes the root system of plant very undeveloped, cause lodging so that be difficult to support the own wt of plant.How just can address this problem? the one, to the plant that has lodged, the plant of oppositely lodging is adopted strapping, two power offset, and make plant upright again.The 2nd, in filter bed, embed sponge, allow the root of plant utilize sponge to reinforce plant root, make the plant of plantation be difficult for lodging.

We attempt setting up an ecological chain that helps self purification of water body, have also thrown in fry tadpole, biologies such as spiral shell April in water body, but a large amount of death is arranged May, a spot of death is arranged June, July occurs a small amount of frog, 8, September, fry bred the s-generation.So tentatively set up a complete ecological chain that is similar to nature, through the ecological recovery in summer, autumn, three seasons of winter, bed mud forms local pasture and water, aquatic biological spiral shell, batrachia, fish thereon by black smelly flavescence and curing.

Facts have proved: the inventor proposes, and this to utilize a kind of environmental protection of ecological return-flow method be rational with artificial filter bed, also is successful.

Claims

1, the artificial filter bed of a kind of ecological refluxing is characterized in that:

A, in the river course, the Hu Tangbianpo place crosses terrace type band in the water with timber (1);

B, cover one deck apertured film on by the original bed of insulating space above-mentioned; (7), and can also fill out in the above the shop one deck earth (8);

C, then in this and the isolated space of main water body, insert with coal gangue or zeolite and be major ingredient, be the mixed fillers (5) of auxiliary material, allow it exceed the river course horizontal plane with soil or quartz sand;

D, the waterways of on this terrace type tableland, laying " ten " font or " well " font, excavation is constructed the plantation hole at the node place in waterways;

E, at the 20-40cm place of planting the hole that with the plant is the center, with the plant be the center successively outwards filling be respectively earth or earth and coal gangue mixture, bastard coal building stones, zeolite or haydite or quartzite, and their mixture; And can between outermost is two-layer, add the porous plastics fender that one deck is interrupted.

2, the artificial filter bed of a kind of ecological refluxing as claimed in claim 1 is characterized in that: described filter bed (10,12) is the bank of spotted in polluted river channel; Simultaneously, in filter bed, settle submersible pump (9) and return line (11), make through the water body after purifying and be back to the upstream from the downstream, river course.