CN208440487U - A kind of composite base material that sediment pollution is administered in situ - Google Patents
A kind of composite base material that sediment pollution is administered in situ Download PDFInfo
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- CN208440487U CN208440487U CN201820868928.5U CN201820868928U CN208440487U CN 208440487 U CN208440487 U CN 208440487U CN 201820868928 U CN201820868928 U CN 201820868928U CN 208440487 U CN208440487 U CN 208440487U
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Abstract
The utility model relates to sediment pollution original position Treatment process fields, specifically disclose a kind of composite base material that sediment pollution is administered in situ comprising: at least one layer discharges layer, carrier layer and coating；Microbial bacterial agent, which can be placed in, to be discharged in layer；The two sides for discharging layer are provided with carrier layer；The two sides up and down of composite base material are coating, and the inside of coating is carrier layer.Have the composite base material of microbial bacterial agent in bed mud Surface pavement, the microorganism in composite base material can apposition growth on a carrier layer, absorb degradation bed mud and pollutant and nutriment in water.The utility model organically combines bed mud physics soverlay technique and biomaterial " fixation " mode, " bioactivity bed course " is formed on bed mud-water body interface, have many advantages, such as that remediation efficiency is high, regulation effect is good, engineering cost is low and benthic environment is influenced small.
Description
Technical field
It is administered in situ the utility model relates to sediment pollution original position Treatment process field more particularly to a kind of sediment pollution
Composite base material.
Background technique
Sediments pollution is the urgent environmental problem that current China faces.Pollutant passes through atmospheric sedimentation, gives up
Water discharge and is washed away into water body rain leaching, is finally deposited in bed mud and is progressively enriched with, there is main pollutant in bed mud
Heavy metal, nutriment, hardly degraded organic substance.After outer pollution sources are centainly controlled, polluted bed mud becomes main endogenous
Property pollution source of water body.
Bed mud soverlay technique is one of the major technique of contaminated sediments reparation, blocks various dirts by bed mud covering
Object is contaminated to discharge to water body.Although the technology has remarkable effect to water correction, many defects are still had, such as: after covering
Pollutant remains in original place, " palliative "；After bed mud Surface mulch, original Benthic ecology environment is changed；It constructed
Cheng Yi causes polluted bed mud to spread, and leads to overlying water secondary pollution；Water body capacity is reduced, and water-bed condition changes.
Patent " in-situ ecological restoration method for riverway polluted sediment (publication number: CN102757129B) " proposes in river
The raw eco-concrete of three layers of plant of upper, middle and lower is laid on bed mud, eco-concrete prevents the heavy metal in bed mud to enter water body, cuts
Broken the pollution channels of pollution sources, and passes through submerged plant and absorb heavy metal in bed mud；But the reparation for the plant planted
Acting on limited can only absorb nutrient that part heavy metal can not be cleared up in bed mud and be difficult to the organic matter degraded.
Patent " a kind of in-situ immobilization heavy metal polluted bed mud covering blanket and its laying method (publication number:
It CN107285582A) ", is that alternatively property heavy metals immobilization filler, cap rock are modified sodium bentonite by packing layer, only singly
One physical barrier solidifies heavy metal, has no biological prosthetic effect.
Currently, being adsorbed, being shifted to the pollutant in bed mud using microbial activities, being converted and degradation has become one kind
Novel recovery technique, microbial technique have gained public acceptance to the regulation effect of polluted bed mud.But implemented in particular technique
Cheng Zhong, there are fixed conditions to be restricted, biomaterial is lost the problems such as serious, remediation efficiency is low.
Therefore, a kind of composite base material that sediment pollution is administered in situ is needed, to solve the above technical problems.
Utility model content
The purpose of this utility model is that proposing a kind of composite base material that sediment pollution is administered in situ, it is able to solve biology
Material is lost serious, polluted bed mud repairing effect difference problem.
For this purpose, the utility model uses following technical scheme:
A kind of composite base material that sediment pollution is administered in situ, comprising:
At least one layer discharges layer, and microbial bacterial agent can be placed in the release layer；
Carrier layer, the two sides for discharging layer are provided with the carrier layer；
Coating, the two sides up and down of the composite base material are the coating, and the inside of the coating is the load
Body layer.
The composite base material of microbial bacterial agent is had in bed mud Surface pavement, the microorganism in composite base material being capable of apposition growth
On a carrier layer, degradation bed mud and pollutant and nutriment in water are absorbed；By bed mud physics soverlay technique and biomaterial
" fixation " mode organically combines, and forms " bioactivity bed course " on bed mud-water body interface, has remediation efficiency height, administers effect
Fruit is good, engineering cost is low and influences the advantages that small to benthic environment.
Preferably, the coating includes upper caldding layer and lower caldding layer, and the upper caldding layer and the lower caldding layer are equal
For geotechnological grid, the lower caldding layer is geotechnological grid or the geotechnological grid for being covered with geotextiles；
The carrier layer is soft-filler, semi soft packing or modified filler；
The release layer includes two layers of acid fiber by polylactic net, and the microbial bacterial agent is distributed in two layers of acid fiber by polylactic
Between net.
Preferably, it is provided with fixation kit on the composite base material, the fixation kit is by the release layer, the carrier
Layer and the coating are fixed together.
Preferably, the fixation kit includes connector, and the connector includes connector ontology and lantern ring；The connection
Part ontology is axially disposed through-hole, and one end of the connector ontology is equipped with protrusion outward, and the other end and the lantern ring can
Dismantling connection.
Preferably, net cup is provided in the through-hole of the connector ontology, it is biological prosthetic that the net cup can contain auxiliary
Material, one end that the net cup is located at the upper caldding layer of the composite base material are provided with type of tamper evidence.
Preferably, the fixation kit includes two fixed plates and multiple two pieces of fixed plates can link together
Fixing piece, the fixing piece along the fixed plate length direction arrange；The composite base material can be wound into cylinder, described solid
Axial direction setting of the fixed board along the cylinder.
Preferably, aerator is provided on the composite base material, the aerator includes aeration tube, the aeration tube
On be provided with qi-emitting hole；
The two sides of the composite base material are provided with the aeration tube, and the composite base material can be wound into cylinder, the exposure
Axial direction setting of the tracheae along the cylinder.
Preferably, the aeration tube of two sides is linked together by least two connectednesses above and below the composite base material；
Two neighboring connectedness in the aeration tube, one of them described connectedness is hollow structure, described in close
The aeration tube of lower caldding layer is connected, which is provided with air inlet close to one end of the upper caldding layer；Another
The connectedness is hollow structure close to the part of the upper caldding layer, is connected with the aeration tube close to the upper caldding layer
Logical, which is provided with air inlet close to one end of the upper caldding layer.
Preferably, the aeration tube is connected with carrying floating ball by hawser, and the air inlet of the connectedness is connected with gas supply
Pipe, the air supply pipe are equipped on the carrying floating ball；The one end of the air supply pipe far from the aeration tube and air supply system phase
Connection.
Preferably, the lower caldding layer is the geotechnological grid for being covered with geotextiles.
The utility model has the following beneficial effects: having the composite base material of microbial bacterial agent, composite base in bed mud Surface pavement
Microorganism in material can apposition growth on a carrier layer, absorb degradation bed mud and pollutant and nutriment in water；The bottom of by
Mud physics soverlay technique is organically combined with biomaterial " fixation " mode, and " bioactivity pad is formed on bed mud-water body interface
Layer " has many advantages, such as that remediation efficiency is high, regulation effect is good, engineering cost is low and influences on benthic environment small.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the composite base material that the sediment pollution that the utility model embodiment one provides is administered in situ；
Fig. 2 is the structural schematic diagram of the connector provided in the utility model embodiment one, net cup and type of tamper evidence；
Fig. 3 is the top view for the composite base material that the sediment pollution that the utility model embodiment two provides is administered in situ；
Fig. 4 be in Fig. 3 along A-A to cross-sectional view；
Fig. 5 is the top view for the composite base material that the sediment pollution that the utility model embodiment four provides is administered in situ；
Fig. 6 is the structural schematic diagram in Fig. 5 along the section of B-B direction and floating ball；
Fig. 7 be in Fig. 5 along C-C to section and floating ball structural schematic diagram.
In figure:
1, layer is discharged；2, carrier layer；3, upper caldding layer；4, lower caldding layer；51, connector；52, net cup；53, type of tamper evidence；
61, fixed plate；62, fixing piece；63, hanging ring；71, aeration tube；711, qi-emitting hole；72, connectedness；73, it links up with；74, air supply pipe；
8, floating ball is carried；81, hawser；9, floating ball is marked；91, connecting rope.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
Embodiment one
As depicted in figs. 1 and 2, present embodiment discloses a kind of composite base materials that sediment pollution is administered in situ, comprising: at least
One layer of release layer 1, carrier layer 2 and coating.Layer 1 is discharged for putting microbial bacterial agent, the two sides for discharging layer 1 are provided with load
Body layer 2；The two sides up and down of composite base material are coating, and the inside of coating is carrier layer 2.
It is one layer that layer 1 is preferably discharged in the present embodiment, and the two sides for discharging layer 1 are carrier layer 2, and two carrier layers 2 are separate
The side for discharging layer 1 is coating.Certainly discharging layer 1 can also be multilayer, be provided with carrier between two layers adjacent of release layer 1
Layer 2, the outside of outermost two layers of release layer 1 are carrier layer 2, and the outside of outermost two layers of carrier layer 2 is coating.
The composite base material of microbial bacterial agent is had in bed mud Surface pavement, the microorganism in composite base material being capable of apposition growth
In carrier layer 2, degradation bed mud and pollutant and nutriment in water are absorbed；By bed mud physics soverlay technique and biomaterial
" fixation " mode organically combines, and forms " bioactivity bed course " on bed mud-water body interface, has remediation efficiency height, administers effect
Fruit is good, engineering cost is low and influences the advantages that small to benthic environment.
Discharge layer 1 include two layers of acid fiber by polylactic net, microbial bacterial agent be distributed evenly in two layers of acid fiber by polylactic net it
Between, mainly the support body used in water when as microbial bacterial agent is not put into.Microorganism can be by after in investment water
Activation growth, is attached in carrier layer 2 and administers again through breeding to bed mud and water pollutant.
Carrier layer 2 is soft-filler, semi soft packing or modified filler etc..It is preferably soft-filler in the present embodiment, it is soft
Property filler material be fabric, the fiber of fabric selects activated carbon fiber, with biggish specific surface area and pole
Strong bio-film colonization ability can make the microorganism for discharging activation in layer 1 be attached in carrier layer 2 and carry out mass propagation.
Coating includes upper caldding layer 3 and lower caldding layer 4, and upper caldding layer 3 is geotechnological grid.Preferably, the present embodiment
Middle lower caldding layer 4 is geotechnological grid, and this mode enables water body and bed mud to administer simultaneously；Lower caldding layer 4 can also be to be covered with
The geotechnological grid of geotextiles, this mode are the administration ways that are covered to bed mud based on water body treating.
Fixation kit is provided on composite base material, fixation kit is fixedly connected on layer 1, carrier layer 2 and coating is discharged
Together.
As shown in Fig. 2, fixation kit includes connector 51, connector 51 includes connector ontology and lantern ring, connector 51
For metal or plastic material, connector ontology is axially disposed through-hole, and one end of connector ontology is equipped with protrusion outward, separately
One end is equipped with groove, and multiple strip grooves have circumferentially been evenly arranged on the side wall of this end connection ontology, and lantern ring can be with
It is set on connector ontology, is stuck in the groove that ring is set.
Connector 51 is evenly arranged on composite base material, is discharged and is provided with connecting hole on layer 1, in carrier layer 2 and coating with apply
The corresponding position of connecting hole for putting layer is also equipped with connecting hole, and connector ontology is threaded through on connecting hole, is discharging layer 1, carrier
After layer 2 and coating stack, connector ontology is passed through into composite base material from upper caldding layer 3, then lantern ring is set in connector sheet
Layer 1, carrier layer 2 and coating will be discharged on body to be fixed together.
Net cup 52 is provided in the through-hole of connector ontology, net cup 52 can contain the soluble biological prosthetic material of auxiliary
Material, one end that net cup 52 is located at the upper caldding layer 3 of composite base material is provided with type of tamper evidence 53.Soluble auxiliary bioprosthetic material
It can be biological oxidant, improvement promotor etc., can quickly kill disease caused by infectious water evil, improve bed mud character, increase water body dissolution
Oxygen improves microbial activity.
Soluble auxiliary bioprosthetic material can also be preliminary acclimated microorganism, with the microbial bacteria for discharging layer 1
Agent collocation uses.
When being not provided with being not provided with type of tamper evidence 53 on net cup 52 or net cup 52 on connector ontology, composite base material becomes porous
Thus open type structure can establish the biological activity channel between bed mud and water body, and realize that bed mud is administered simultaneously with water body.This
Outside, connector 51 be also substrate mass, in order to sinking construction operation in water and reinforcement substrate mat formation when and bed mud patch
It closes, is conducive to microorganism and is bred in bed mud.
When being provided with net cup 52 on connector ontology, and type of tamper evidence 53 being set on net cup 52, bed mud and water body may be implemented
Isolation administer.The barrier or connection at bed mud-water body interface can be achieved by the control (being put into or vacant) to type of tamper evidence 53, with
Carry out artificial process regulation.
To type of tamper evidence 53 be put into or it is vacant, can composite base material put into water in front of preset；Through centainly administering the period
Afterwards, the type of tamper evidence 53 being present on composite base material can also be moved up from composite base material under water by way of manual operation
It removes.Type of tamper evidence 53 can specifically be removed from composite base material in such a way that floating ball cooperates hawser.
Embodiment two
Composite base material in the present embodiment is identical as in embodiment one, only the fixed form of composite base material and is used
Fixation kit it is different from embodiment one.
As shown in Figure 3 and Figure 4, in the present embodiment fixation kit include two fixed plates 61 and it is multiple can be by two pieces of fixations
The fixing piece 62 that plate 61 links together, fixed plate 61 use strip plate, and material is metal, and fixing piece 62 uses bolt.Spiral shell
The lower end of bolt is fixed in the fixed plate 61 of lower caldding layer 4, and the body of rod of bolt passes through composite base material and close to upper caldding layer 3
Fixed plate 61 then be fixed by nuts.Fixing piece 62 arranges along the length direction of fixed plate 61, a fixation in the present embodiment
Two fixing pieces 62 are set on plate 61.Compound to be wound into cylinder, fixed plate 61 is arranged along the axial direction of cylinder；Setting can incite somebody to action in this way
Composite base material is wound into cylinder, easy to carry and transport.
Fixed plate 61 and fixing piece 62 are also used as the mass of composite base material, in order to sinking construction and reinforcement in water
It is bonded when substrate is mated formation with bed mud, is conducive to microorganism and is bred in bed mud.
Be provided with hanging ring 63 in the fixed plate 61 close to upper caldding layer 3, be connected with hawser on hanging ring 63, hawser it is another
One end is connected with carrying floating ball, since water flow can pass to composite base material to the tractive force that floating ball generates is carried, can make composite base
Material is contacted with bed mud fluctuating, to improve diffusion, the circulation, give-and-take conditions at interface, improves remediation efficiency and regulation effect.It carries floating
Ball is also used as indicating, convenient for the position where finding composite base material in water.In addition, hawser can also be used when necessary in water
Implement artificial traction in face of substrate, so that composite base material is risen and fallen with bed mud and contact, to realize that artificial process regulates and controls.
Embodiment three
It can also be in such a way that connector 51 and fixed plate 61 combine to the fixation of composite base material.Fixation kit includes
Connector 51, two fixed plates 61 and multiple fixing pieces 62 that two fixed plates 61 can be linked together.Wherein connector
51 is identical as the setting of the connector 51 in embodiment one and arrangement；In fixed plate 61 and fixing piece 62 and embodiment two
Setting is identical with arrangement, and fixed plate 61 is set between two adjacent row connectors 51.
Example IV
The fixed form of composite base material in the present embodiment is identical as in embodiment one, and is provided with net on connector 51
Cup 52 and type of tamper evidence 53.
As shown in Fig. 5, Fig. 6 and Fig. 7, aerator is provided on composite base material, aerator includes aeration tube 71 and connects
Parts 72, aeration tube 71 is preferably rectangular tube closed at both ends in the present embodiment.Qi-emitting hole 711 is provided on aeration tube 71.It is multiple
The two sides for closing substrate are provided with aeration tube 71, and composite base material can be wound into cylinder, and aeration tube 71 is arranged along the axial direction of cylinder.In this way
Composite base material can be wound into cylinder, easy to carry and transport by setting.
As shown in fig. 6, the aeration tube 71 of two sides is linked together by least two connectednesses 72 above and below composite base material.It exposes
Two neighboring connectedness 72 on tracheae 71, one of connectedness 72 are hollow structure, with the aeration tube close to lower caldding layer 4
71 are connected, which is provided with air inlet close to one end of upper caldding layer 3；Another connectedness 72 is close to upper caldding layer
3 part is hollow structure, is connected with the aeration tube 71 close to upper caldding layer 3, the connectedness 72 is close to the one of upper caldding layer 3
End is provided with air inlet.The aeration tube 71 of connectedness 72 and close lower caldding layer 4 is integrally formed, close to one end of upper caldding layer 3
It is provided with screw thread, is bolted with nut on screw thread, the aeration tube 71 of composite base material two sides is connected by nut.71 He of aeration tube
Connectedness 72 also acts the effect for being fixedly attached together release layer 1, carrier layer 2 and the coating of composite base material.Aeration
Pipe 71 and connectedness 72 can play the role of fixed plate 61 and fixing piece 62, can be used as the substitution of fixed plate and fixing piece.
The air inlet of connectedness 72 is connected with air supply pipe 74.It is provided with hook 73 on the aeration tube 74 of upper caldding layer 3,
Hawser 81 is connected on hook 73, the other end of hawser 81, which is connected with, carries floating ball 8.Air supply pipe is equipped on carrying along hawser 81 and floats
On ball 8, air supply pipe 74 is connected far from one end of aeration tube 71 with air supply system.Since water flow is led to 8 generation of floating ball is carried
Gravitation can pass to composite base material, and composite base material can be made to rise and fall with bed mud and contacted, to improve diffusion, the circulation, exchange item at interface
Part improves remediation efficiency and regulation effect.
Artificial traction is implemented to substrate in the water surface in addition, hawser 81 can also be used when necessary, plays composite base material and bed mud
Volt contact, to realize that artificial process regulates and controls.
Air supply system provides high pressure gas to air supply pipe 74, and high pressure gas is discharged by the qi-emitting hole 711 on aeration tube 71,
The two sides of composite base material are aerated, the oxygen content in water is increased, promote microorganism growth, attachment, breeding, in bed mud-water
" bioactivity bed course " is formed on body interface.It can be according to bed mud environment and microorganism growth conditions, when being carried out to aeration process
Sequence distribution and regulation.
In addition to this, air supply pipe 74 can be regard as intrusion pipe, is pumped into required micro- life to substrate and bed mud region from outside
Object microbial inoculum and auxiliary material improve remediation efficiency and effect to improve bed mud-water body interface biotic environment.Meanwhile it can also incite somebody to action
Air supply pipe 74 is used as extraction tube, at this point, the material of air supply pipe 74 must be the material of hard, such as plastic conduit or steel pipe；
Bed mud-water body interface environmental factor is sampled by external sampling pump, is monitored, to regulate and control to provide ginseng to artificial process
According to.
As shown in fig. 7, being provided with connection ring in type of tamper evidence 53, connection ring is connected by connecting rope 91 with label floating ball 9.It will
It is provided with the composite base material of net cup 52 and type of tamper evidence 53 into the water, it is artificial to be connected to by pulling after centainly administering the period
Connecting rope 91 on label floating ball 9 can remove type of tamper evidence 53 from composite base material.
Note that above are only the preferred embodiment and institute's application technology principle of the utility model.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment described here, is able to carry out for a person skilled in the art various bright
Aobvious variation, readjustment and substitution is without departing from the protection scope of the utility model.Therefore, although passing through above embodiments
The utility model is described in further detail, but the utility model is not limited only to above embodiments, is not departing from
It can also include more other equivalent embodiments in the case that the utility model is conceived, and the scope of the utility model is by appended
Scope of the claims determine.
Claims (10)
1. a kind of composite base material that sediment pollution is administered in situ characterized by comprising
At least one layer discharges layer (1), and microbial bacterial agent can be placed in the release layer (1)；
Carrier layer (2), the two sides for discharging layer (1) are provided with the carrier layer (2)；
Coating, the two sides up and down of the composite base material are the coating, and the inside of the coating is the carrier layer
(2)。
2. composite base material according to claim 1, which is characterized in that the coating include upper caldding layer (3) and under cover
Cap rock (4), the upper caldding layer (3) and the lower caldding layer (4) are geotechnological grid；
The carrier layer (2) is soft-filler, semi soft packing or modified filler；
The release layer (1) includes two layers of acid fiber by polylactic net, and the microbial bacterial agent is distributed in two layers of acid fiber by polylactic
Between net.
3. composite base material according to claim 2, which is characterized in that be provided with fixation kit, institute on the composite base material
Fixation kit is stated to be fixed together the release layer (1), the carrier layer (2) and the coating.
4. composite base material according to claim 3, which is characterized in that the fixation kit includes connector (51), described
Connector (51) includes connector ontology and lantern ring；The connector ontology is axially disposed through-hole, the connector ontology
One end be equipped with protrusion outward, the other end is detachably connected with the lantern ring.
5. composite base material according to claim 4, which is characterized in that be provided with net cup in the through-hole of the connector ontology
(52), the net cup (52) can contain auxiliary bioprosthetic material, and the net cup (52) is located at the described of the composite base material
One end of upper caldding layer (3) is provided with type of tamper evidence (53).
6. composite base material according to claim 3, which is characterized in that the fixation kit include two fixed plates (61) and
Multiple fixing pieces (62) that two pieces of fixed plates (61) can link together, the fixing piece (62) is along the fixed plate
(61) length direction arrangement；
The composite base material can be wound into cylinder, axial direction setting of the fixed plate (61) along the cylinder.
7. composite base material according to claim 2, which is characterized in that be provided with aerator, institute on the composite base material
Stating aerator includes aeration tube (71), and qi-emitting hole (711) are provided in the aeration tube (71)；
The two sides of the composite base material are provided with the aeration tube (71), and the composite base material can be wound into cylinder, the exposure
Axial direction setting of the tracheae (71) along the cylinder.
8. composite base material according to claim 7, which is characterized in that the aeration tube of two sides above and below the composite base material
(71) it is linked together by least two connectednesses (72)；
Two neighboring connectedness (72) in the aeration tube (71), one of them described connectedness (72) they are hollow structure, with
The aeration tube (71) close to the lower caldding layer (4) is connected, and the one of the connectedness (72) close the upper caldding layer (3)
End is provided with air inlet；Another described connectedness (72) is hollow structure close to the part of the upper caldding layer (3), and close
The aeration tube (71) of the upper caldding layer (3) is connected, which sets close to the one end of the upper caldding layer (3)
It is equipped with air inlet.
9. composite base material according to claim 8, which is characterized in that the aeration tube (71) is connected with by hawser (81)
It carries floating ball (8), the air inlet of the connectedness (72) is connected with air supply pipe (74), and the air supply pipe (74) is equipped on described take
It carries on floating ball (8)；The air supply pipe (74) is connected far from the one end of the aeration tube (71) with air supply system.
10. composite base material according to claim 2, which is characterized in that the lower caldding layer (4) is the soil for being covered with geotextiles
Work grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201820868928.5U CN208440487U (en) | 2018-06-06 | 2018-06-06 | A kind of composite base material that sediment pollution is administered in situ |
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| CN201820868928.5U CN208440487U (en) | 2018-06-06 | 2018-06-06 | A kind of composite base material that sediment pollution is administered in situ |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108503166A (en) * | 2018-06-06 | 2018-09-07 | 中国海洋大学 | A kind of composite base material that sediment pollution is administered in situ |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108503166A (en) * | 2018-06-06 | 2018-09-07 | 中国海洋大学 | A kind of composite base material that sediment pollution is administered in situ |
| CN108503166B (en) * | 2018-06-06 | 2024-02-06 | 中国海洋大学 | Composite substrate for in-situ treatment of substrate sludge |
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