CN101575146B

CN101575146B - Self-anchored immersed ecological filter bed and method thereof for in situ purifying micro-polluted surface water

Info

Publication number: CN101575146B
Application number: CN200910052121XA
Authority: CN
Inventors: 张明; 徐亚同; 何国富; 席亚萍
Original assignee: East China Normal University
Current assignee: East China Normal University
Priority date: 2009-05-27
Filing date: 2009-05-27
Publication date: 2011-04-27
Anticipated expiration: 2029-05-27
Also published as: CN101575146A

Abstract

The invention discloses a self-anchored immersed ecological filter bed and a method thereof for purifying micro-polluted surface water in situ, wherein the filter bed comprises a three-dimensional rectangle framework, parallel ropes (nylon cords or ropes of other materials), contact oxidation fillers and biomembranes; the plurality of parallel ropes are correspondingly arranged on the upper surface and the lower surface of the three-dimensional rectangle framework; the contact oxidation fillers are bound among the parallel ropes on the upper surface and the lower surface; the biomembranes are adhered to the surfaces of the contact oxidation fillers; and an anchored heavy things is connected to the bottom of the three-dimensional rectangle framework. The method thereof for purifying water comprises the steps of arranging the filter bed in the water body needing purification, anchoring the anchored heavy things at the bottom of a river (lake) bed, leading the filter bed to be immersed and suspended in the water body, and leading the bottom of the filter bed not to contact the river (lake) bed. The invention has the characteristics of large contact specific surface area, high biomass,quick purification speed, high efficiency, no affection on the sight and the like.

Description

The method of self-anchored immersed ecological filter bed and purifying micro-polluted surface water in situ

Technical field

The present invention relates to water-treatment technology field, particularly a kind of method of self-anchored immersed ecological filter bed and purifying micro-polluted surface water in situ.

Background technology

In the prior art, ecological filter bed is to utilize elastic filler or the huge specific surface area of combined stuffing, makes microorganism growth form microbial film at filling surface, thereby plays biofiltration and biotransformation.It can be used to the surface water of little pollution of strengthened purification on the spot and eutrophication.But traditional ecological filter bed its surface-area is big inadequately, and the implantation of microorganism and algae is not easy, and takes fixed installation, and is flexible relatively poor, influences the water body navigation, and capacity of anti-storm is also relatively poor, makes the effect that purifies water unsatisfactory.

Summary of the invention

The method that a kind of self-anchored immersed ecological filter bed and purifying micro-polluted surface water in situ that provides at the deficiencies in the prior art is provided, it is ecological filter bed, and to have catalytic oxidation filler support specific surface area big, very high biomass is arranged, it is fast that its method has purification speed, the efficient height, anti-hydraulic load impacts, characteristics such as less investment.

The object of the present invention is achieved like this:

A kind of self-anchored immersed ecological filter bed, this filter bed comprises solid rectangle framework, parallel rope (nylon rope or other material ropes), catalytic oxidation filler and microbial film, parallel rope is several and corresponding solid rectangle frame upper surface and the lower surface of being arranged at, the colligation of catalytic oxidation filler is between upper surface and lower surface parallel rope, and microbial film is attached to the catalytic oxidation filling surface; The grappling weight is connected in the solid rectangle base of frame.

Described solid rectangle framework is made with mao bamboon or low density material, is banded with the catalytic oxidation filler on it, as elastic filler, soft-filler, semi soft packing or combined stuffing.

Described self-anchored immersed ecological filter bed its global density of grappling weight that do not comprise is lower than the density of water, needs to carry out grappling by the grappling weight; The grappling weight of heavy is adjusted according to the flow rate of water flow of job site.

A kind of method of purifying micro-polluted surface water in situ, this method is with above-mentioned self-anchored immersed ecological filter bed being positioned in the water body that need purify, the grappling weight is anchored to bed bottom, river (lake), make this submergence and be suspended in the water body, its body top is 0.5～1.5m apart from water surface elevation, and ecological filter bed bottom does not contact bed bottom, river (lake).

After the grappling weight untied, not containing the ecological filter bed of grappling weight can move easily, and can anchor to the water body that other need purify again.

It is big that the present invention has catalytic oxidation filler support specific surface area, and very high biomass is arranged, and purification speed is fast, the efficient height, and anti-hydraulic load impacts; If oxygen in water is higher, can satisfy growth requirement biological on the catalytic oxidation filler support, then do not need aeration, non-power consumption; Catalytic oxidation filler support filler has very big space, is suitable for the ydrodynamics condition of river water body, does not influence flow velocity, does not influence the water drainage flood passage; Speed of application is fast, no earthwork, less investment; But bed body modularization is installed flexibly at the enforcement scene; After the installation, hydrocoles has played removes aging biomembranous effect, need not final-period management substantially, and management maintenance is convenient; The bed body is installed under water, does not influence view, to the diversion river course of no shipping function not having landscape impact.

Description of drawings

Fig. 1 is a filter bed structural representation of the present invention

Fig. 2 is filter bed user mode figure of the present invention

Embodiment

Consult Fig. 1, Fig. 2, filter bed of the present invention comprises solid rectangle framework 5, parallel rope 2, catalytic oxidation filler 6 and microbial film 4, parallel rope 2 is several and corresponding solid rectangle framework 5 upper surfaces and the lower surface of being arranged at, 6 colligations of catalytic oxidation filler are between upper surface and lower surface parallel rope 2, and microbial film 4 is attached to catalytic oxidation filler 6 surfaces; Grappling weight 3 is connected in solid rectangle framework 5 bottoms, adopts rope to connect; Solid rectangle framework 5 is made with mao bamboon or low density material, is banded with catalytic oxidation filler 6 on it, as elastic filler, soft-filler, semi soft packing or combined stuffing; Its low density material comprises: wood, the PVC that seals or UPVC pipe etc.Self-anchored immersed ecological filter bed grappling weight 3 its global densities that do not comprise are lower than the density of water, need to carry out grappling by grappling weight 3; The weight of grappling weight 3 is adjusted according to the flow rate of water flow of job site.

The method that the present invention purifies waste water is with above-mentioned self-anchored immersed ecological filter bed being positioned in the water body that need purify, grappling weight 3 is anchored to bed 7 bottoms, river (lake), make this submergence and be suspended in the water body, its body top highly is 0.5～1.5m apart from the water surface 8, and ecological filter bed bottom does not contact river (lake) bed 7; After the 3 disconnection connections of grappling weight, not containing the ecological filter bed of grappling weight 3 can move easily, and can anchor to the water body that other need purify again.

Bed body of the present invention is the facility that a kind of microorganism for the participation pollutant purification, protozoon, small-sized zooplankton, crustacean etc. provide growth conditions.The catalytic oxidation filler of high-specific surface area is set on the bed body, makes the microorganism growth of a large amount of participation pollutant purifications on filler, form muciform microbial film; Because microbial film anchors at growth on the filler and does not flow away with river, so biomass improves several magnitude in the water body of unit volume.When river flow through a bed body, organism contained in the river was degraded to carbonic acid gas and water by the heterotrophic organism adsorption and oxidation on the microbial film on the filler; Organonitrogen in the river is converted into ammonia nitrogen rapidly by the microorganism in the microbial film, and ammonia nitrogen is oxidized to nitric nitrogen by nitrobacteria on the microbial film, and nitric nitrogen then can obtain removing by biomembranous denitrification denitrogenation effect, can effectively reduce the total nitrogen in the river; Contained phosphorus in the river, mainly comprise contained phosphorus in the phosphoric acid salt of solubility and the solid particulate matter, the two all can and utilize by microorganism absorption, absorption in the microbial film, and the crustacean of bed in the body, mollusk etc. are by biological mucus of secretion and the effect of filter food, can quicken the precipitation and the removal of the suspended solids in the river, and then effectively reduce ammonia nitrogen.The microbial film of growing on the filler can be eaten by protozoon, metazoan, crustacean plankton and fish etc., and microbial film is upgraded timely.Hydrocoles also can prey on planktonic organism, has so just formed a whole piece food chain (net), and pollutent is decomposed completely and transforms in the river.

Claims

One kind self-anchored immersed ecological filter bed, it is characterized in that this filter bed comprises solid rectangle framework (5), parallel rope (2), catalytic oxidation filler (6) and microbial film (4), parallel rope (2) is several and corresponding solid rectangle framework (5) upper surface and the lower surface of being arranged at, catalytic oxidation filler (6) colligation is between upper surface and lower surface parallel rope (2), and microbial film (4) is attached to catalytic oxidation filler (6) surface; Grappling weight (3) is connected in solid rectangle framework (5) bottom; The ecological filter bed global density of grappling weight (3) that do not comprise is lower than the density of water.
2. according to claim 1 ecological filter bed, it is characterized in that solid rectangle framework (5) makes with the mao bamboon material, be banded with catalytic oxidation filler (6) on it.
3. according to claim 1 ecological filter bed, it is characterized in that solid rectangle framework (5) makes with low density material, be banded with catalytic oxidation filler (6) on it; Its low density material comprises: PVC or UPVC wooden, that seal manage.
4. the method for a purifying micro-polluted surface water in situ, it is characterized in that: with claim 1 or described self-anchored immersed ecological filter bed being positioned in the water body that need purify of claim 2, the grappling weight is anchored to riverbed or lakebed bottom, make this submergence and be suspended in the water body, its body top is 0.5～1.5m apart from water surface elevation, and ecological filter bed bottom does not contact riverbed or lakebed.
5. method according to claim 4 is characterized in that a bed body can arbitrarily move, and can anchor to the water body that other need purify again with after the grappling weight disconnection connection.