CN115417558A - Novel organic pollutant sewage interception system for reclaimed water reuse in river and lake undercurrent zone and construction method - Google Patents
Novel organic pollutant sewage interception system for reclaimed water reuse in river and lake undercurrent zone and construction method Download PDFInfo
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- CN115417558A CN115417558A CN202210996270.7A CN202210996270A CN115417558A CN 115417558 A CN115417558 A CN 115417558A CN 202210996270 A CN202210996270 A CN 202210996270A CN 115417558 A CN115417558 A CN 115417558A
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F2003/001—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
- C02F2003/003—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms using activated carbon or the like
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Abstract
The invention relates to a novel organic pollutant intercepting system for reclaimed water reuse in a river and lake undercurrent zone and a construction method, wherein the pollutant intercepting system comprises a lower cushion layer, a core pollutant purifying layer, an inverted filter layer and a protective layer, the core pollutant purifying layer is arranged on the surface of the lower cushion layer, the inverted filter layer is arranged on the surface of the core pollutant purifying layer, the protective layer is arranged on the surface of the inverted filter layer, and the lower cushion layer is arranged on the surface of a river bed or a lake bed; wherein the core decontamination layer comprises a biological membrane-activated charcoal composite, and the biological membrane-activated charcoal composite is obtained by in-situ microorganism growth on activated charcoal; the river bed or the lake bed is a river bed or a lake bed of the reclaimed water receiving water body. The invention realizes the high-efficiency interception and purification of novel organic pollutants, nitrogen, phosphorus and other substances in the reclaimed water, and has good prospect in the application of preventing and controlling the diffusion of pollutants in the fields of reclaimed water utilization and river and lake treatment engineering.
Description
Technical Field
The invention relates to the technical field of pollution control of reclaimed water recycled river and lake underground water, in particular to a novel organic pollutant intercepting system for a reclaimed water recycled river and lake subsurface flow zone and a construction method.
Background
The reuse of reclaimed water is a key strategy for solving the problem of water resource shortage by building 'the Happy river and lake', and becomes an important strategic water resource for maintaining the sustainable and healthy development of the urban water ecosystem. Due to the limitation of the existing reclaimed water quality discharge standard, even if the standard reclaimed water reuse standard still contains nutrient substances such as nitrogen, phosphorus, soluble organic matters and the like with higher concentration and toxic and harmful chemical pollutants, particularly under the influence of factors such as treatment process, technology, treatment cost and the like, the existing traditional sewage treatment process can not completely remove part of novel organic pollutants in sewage, such as Endocrine Disruptors (EDCs), persistent Organic Pollutants (POPs) and the like, and the existing reclaimed water treatment process can enter the water environment through approaches such as tail water discharge of a sewage treatment plant, ecological reuse of reclaimed water and the like and cause water ecological risks. E.g., very low concentrations of endocrine disruptors, which can disrupt the endocrine and reproductive systems by binding to intracellular estrogen receptors; persistent organic pollutants perfluorinated compounds (PFASs) can be stored and migrated in the environment for a long time, and have toxic effects on development, reproduction, immunity, metabolism and the like of human beings and animals, wherein substances such as perfluorooctane sulfonates, carboxylic acids and the like are listed in the list of forbidden persistent organic matters of the Stockholm convention. Therefore, environmental ecology and human health risks caused by new organic pollutants are of great concern.
The urban rivers and lakes are used as important receiving water bodies of reclaimed water and are also important sources for replenishing underground water. Novel organic pollutant that does not obtain effective processing among the sewage treatment plant will arouse groundwater pollution risk along with groundwater supply process to take place the diffusion under groundwater convection action, increase groundwater pollution prevention and control and administer the degree of difficulty, for this reason, prevent and control the groundwater pollution of novel organic pollutant in the reclaimed water and have become the problem that needs to solve in the reclaimed water retrieval and utilization river lake ecology is administered urgently. The river and lake undercurrent zone is a reclaimed water reuse area, and a water body on the ground surface infiltrates into a necessary channel of an underground water body, so that the improvement effect on the quality of reclaimed water is obvious. Therefore, necessary function transformation and reconstruction can be carried out on the undercurrent zone in the reclaimed water recycling river and lake renovation project, the interception and degradation functions of the undercurrent zone on novel pollutants such as endocrine disruptors and persistent organic pollutants are improved, and the pollution risk of the novel organic pollutants of the underground water caused by reclaimed water recycling is prevented and controlled.
In order to solve the problem of pollution of novel organic pollutants of groundwater in a river and lake region by reclaimed water reuse, chinese patent (CN 210140519U) discloses a reclaimed water replenishing riverway system based on riverbank percolation, wherein the riverbank is reformed into a percolation-biological treatment unit by using gravel, modified zeolite, ceramsite, volcanic rock, iron-coated quartz and other materials, reclaimed water is discharged into a riverway from the top of the riverbank after the percolation-biological treatment system is reformed, and is further subjected to advanced treatment before entering the riverway, so that the phenomenon that the reclaimed water replenishes the riverway is prevented, and meanwhile, the pollution risk of groundwater replenished by the reclaimed water of the riverway is reduced; chinese patent (CN 102966071A) discloses an in-situ treatment method for a shallow-flow regenerated water riverway, which realizes in-situ deep treatment of a regenerated water supply riverway water body by constructing a gravel bed shallow-flow riverway and arranging artificial biological filler and composite nanofiber filler in the gravel riverway bed, thereby reducing the risk of groundwater pollution. In addition, a circulating well system consisting of a circulating well pipe, a water pumping pipe and an injection pipe is constructed in the Chinese patent (CN 210656457U), units such as underground water extraction, a stripping tower, gas distribution injection and the like are arranged in the circulating well system, and organic pollutants in the underground water are removed in a stripping and medicament adding mode; firstly, pumping underground water by using a submersible pump, treating the underground water in a pumping pipe by a stripping tower, then feeding the underground water into a gas distribution water collecting tank, adding an oxidant or a biological strengthening agent into the gas distribution water collecting tank, increasing the oxygen content by using a gas distribution pipe and realizing the full mixing of the agent and the underground water; and finally, recharging the underground water treated in the gas distribution water collecting tank by using the injection pipe to realize hydraulic circulation of the circulating well repairing system. Chinese patent (CN 107999531B) proposes an in-situ remediation material for groundwater polluted by organic pollutants and a method thereof, wherein an injection well is built at the upstream of an underground water layer, a grouting pipe is arranged in the injection well, and a high-pressure liquid pump is utilized to inject the remediation material consisting of iron powder, a biosurfactant, an activator and the like into underground water, so as to realize the combined remediation of organic pollutants which are difficult to volatilize and oxidize in-situ underground water.
The method is based on the existing technology for preventing and controlling the pollution of the reclaimed water by novel organic pollutants in the groundwater in the river and lake regions. From the perspective of 'source treatment', the method is mainly used for improving the water quality of water bodies in the riverway, but no related technology takes novel organic pollutants as a main focus target; from the angle of 'terminal treatment', the organic pollution treatment of underground water is realized by constructing a complex underground water remediation system, and the underground water pollution remediation technology has high cost and energy consumption and is difficult to meet the requirements of the times.
In summary, from the perspective of preventing and controlling pollution of novel organic pollutants in groundwater in reclaimed water reuse river and lake regions, certain defects exist in the prior art, and a new technical scheme needs to be developed urgently to solve the problems in the prior art and meet the requirements of preventing and controlling pollution of novel organic pollutants in groundwater in reclaimed water reuse river and lake regions.
Disclosure of Invention
Based on the above, the invention develops a novel organic pollutant interception system of a reclaimed water reuse river and lake subsurface flow zone and a construction method thereof, an active biological carbon layer is arranged in a reclaimed water supply river and lake subsurface flow zone, a microbial carbon source is properly added, nutrient substances such as nitrogen and phosphorus in reclaimed water are assisted, the local microorganisms are stimulated to rapidly grow and form a large amount of biological films, the biological films are utilized to bond active biological carbon particles, an active biological carbon-biological film coupling decontamination layer is constructed, and the enrichment of a biological film-active biological carbon compound and the degradation function of microorganisms are simultaneously exerted, so that the purposes of intercepting and purifying novel organic pollutants and substances such as nitrogen and phosphorus introduced by infiltration of reclaimed water are achieved, and the novel organic pollutant interception and purification system has a good prospect in the application of preventing and controlling pollutant diffusion in the fields of reclaimed water utilization and river and lake treatment engineering.
The invention aims to provide a novel organic pollutant intercepting system for reclaimed water reuse in a river and lake subsurface flow zone, which comprises a lower cushion layer, a core pollutant purifying layer, a reverse filter layer and a protective layer, wherein the core pollutant purifying layer is arranged on the surface of the lower cushion layer, the reverse filter layer is arranged on the surface of the core pollutant purifying layer, the protective layer is arranged on the surface of the reverse filter layer, and the lower cushion layer is arranged on the surface of a river bed or a lake bed;
the core decontamination layer comprises a biological membrane-active biological carbon compound, wherein the biological membrane-active biological carbon compound is obtained by the growth of microorganisms in river and lake in-situ sediments on active biological carbon; the river bed or the lake bed is a river bed or a lake bed of the reclaimed water receiving water body.
The novel organic pollutant intercepting system for the reclaimed water reuse river and lake subsurface flow zone is mainly used for enhancing the pollutant purification performance of the subsurface flow zone at the initial stage of river and lake remediation, so that the groundwater in the reclaimed water reuse river and lake region is prevented and controlled from being polluted by the novel organic pollutants.
Further, the active biochar comprises biochar obtained by calcining a biological material at a high temperature under an anaerobic condition, and the particle size of the biochar is 0.5-2mm.
Further, the activated charcoal also comprises a microbial carbon source, and the microbial carbon source is selected from one or more of LB culture medium, glucose, starch and sodium acetate.
Further, the biological material is selected from one or more of municipal landscaping waste and crop waste.
Further, the in situ microorganisms include microorganisms contained in river and lake in situ sediments or soil.
Another object of the present invention is to provide a method for constructing the novel organic pollutant intercepting system for the reclaimed water reuse in the river and lake subsurface flow zone, comprising the following steps:
s1, calcining the biological material at high temperature under an anaerobic condition, mixing with a microorganism carbon source, and soaking to obtain active biochar rich in nutrients required by microorganism growth;
s2, mixing and uniformly mixing the in-situ fresh sediments of the river and the lake, the river sand and the active biochar under the saturated water content, and performing pre-culture treatment to obtain a core decontamination layer filling material;
s3, after leveling a river bed or a lake bed, paving sand to obtain a lower cushion layer, and then paving the core decontamination layer filling material on the surface of the lower cushion layer to obtain a core decontamination layer;
s4, paving gravel on the surface of the core decontamination layer to obtain a reverse filtering layer, and paving cobble gravel on the surface of the reverse filtering layer to obtain a protective layer.
Further, in step S1, the temperature of the high-temperature calcination is 700 to 900 ℃.
Further, in the step S2, the particle size of the river sand is 1-3mm.
River sand with the particle size of 1-3mm can effectively enhance the structural strength of the core decontamination layer, and the service life and the stability of the decontamination layer are improved.
Further, in the step S2, the mass ratio of the river and lake in-situ sediment, the river sand and the active biochar is 1 (2-4) to (1-2).
Further, the thickness of the core decontamination layer is 15-30cm, the thickness of the reverse filtration layer is 8-15cm, and the thickness of the protective layer is 15-25cm.
Further, the compacted density of each layer is not less than 90%.
The gravel protective layer and the gravel material reverse filter layer can prevent the damage and disturbance of a dirt cleaning layer caused by the hydrodynamic flushing of rivers and lakes; in the core decontamination layer, the pores of the activated biochar contain a microbial carbon source, so that rich nutrient substances can be provided for microbes, and the activated biochar has good compatibility with the microbes, so that the microbes in-situ sediments of rivers and lakes are stimulated to grow and gradually form a stable biofilm, river sand with a specific particle size not only improves the structural strength, but also has good permeability, so that a regenerated water body can fully flow in, and substances such as nitrogen, phosphorus, organic matters and the like in the river sand body are supplied as nutrients, so that the growth rate of the biofilm is greatly promoted, so that gaps among river sand particles are filled with a net structure formed by crosslinking of a biofilm-activated biochar compound, and the river sand has a large specific surface area and a biofilm-activated biochar coupling decontamination effect, and the efficient interception and removal of novel organic pollutants are realized; the lower cushion layer at the bottom can also be used as a biomembrane attachment medium of the undercurrent zone to form a deep biomembrane dirt purification and interception area, thereby further enhancing the interception and removal effects of the undercurrent zone on pollutants. The multilayer tightly-stacked structure can greatly promote the good growth of the biomembrane-active biochar compound, thereby achieving the effect of high-efficiency pollutant interception.
The invention has the following beneficial effects:
1. the invention is based on the natural solution concept, starts from the thinking of 'front-end prevention and control', realizes the reconstruction of a sewage purification system of an underflow zone and the enhancement of sewage purification capacity by utilizing an in-situ microbial biofilm and an environment-friendly activated charcoal material in the process of recycling reclaimed water to the river and lake, prevents and controls the pollution of novel organic pollutants of the groundwater in the reclaimed water recycling river and lake region under the condition of maintaining the normal interaction between the reclaimed water recycling river and lake surface water and the groundwater, effectively intercepts or removes the pollutants, and avoids the ecological, technical and cost comprehensive problems of deterioration of an underground ecological system, high restoration difficulty, high investment cost and the like caused by 'first pollution and later treatment' of the groundwater.
2. The raw material active charcoal is prepared by calcining the biological material at high temperature under the anaerobic condition, provides a new way for solving municipal administration, landscaping and crop straw waste treatment, and fully exerts the environmental and ecological values.
3. The raw materials of the invention are constructed by natural materials with low price and environmental protection, no chemical agent or material is used, the construction is simple, and the cost is low, thereby greatly saving the fund for treating the reclaimed water river. From the aspect of engineering application, the technology is obviously an ecological environment-friendly pollution prevention and control technology in the aspect of preventing and controlling novel organic pollutants in groundwater in a river and lake region replenished by reclaimed water, belongs to a leading level in the domestic related technical field, and has a good application prospect.
Drawings
Fig. 1 shows a schematic structural diagram in an embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the technical solution of the present invention, the following examples are listed. The starting materials, reactions and work-up procedures which are given in the examples are, unless otherwise stated, those which are customary on the market and are known to the person skilled in the art.
It is to be understood that except in any operating examples, or where otherwise indicated, all numbers expressing, for example, quantities of ingredients used in the specification and claims are to be understood as being modified in all instances by the term "about". Accordingly, unless indicated to the contrary, the numerical parameters set forth in the following specification and attached claims are approximations that may vary depending upon the desired properties to be obtained by the present invention.
The biological material in the embodiment of the invention is crop waste straw or municipal garden greening waste.
The biofilm in the examples of the invention is formed by microorganisms in situ in river and lake sediments.
The concentration of LB medium in the examples of the present invention was 20g/L.
The river sand particle size in the embodiment of the invention is 1mm.
Examples
The invention relates to a novel organic pollutant intercepting system for reclaimed water reuse in a river and lake subsurface flow zone, which comprises a lower cushion layer, a core pollutant purifying layer, a reverse filter layer and a protective layer, wherein the core pollutant purifying layer is arranged on the surface of the lower cushion layer, the reverse filter layer is arranged on the surface of the core pollutant purifying layer, the protective layer is arranged on the surface of the reverse filter layer, and the lower cushion layer is arranged on the surface of a river bed or a lake bed;
the core decontamination layer comprises a biological membrane-active biological carbon compound, wherein the biological membrane-active biological carbon compound is obtained by the growth of microorganisms in river and lake in-situ sediments on active biological carbon; the river bed or the lake bed is a river bed or a lake bed of the reclaimed water receiving water body.
The construction method of the novel organic pollutant intercepting system for the reclaimed water reuse river and lake subsurface flow zone comprises the following steps:
s1, calcining a biological material at 700 ℃ for 5 hours under an anaerobic condition to obtain biochar with the particle size of 1mm, fully and uniformly mixing the cooled biochar with 20g/LLB culture medium according to a solid-liquid ratio of 0.5 kg/L, and soaking for 48 hours to fill LB culture medium into biochar pores to obtain active biochar rich in nutrient substances required by microorganism growth;
s2, uniformly mixing the river and lake in-situ fresh sediments, river sand and the activated charcoal in a mass ratio of 1;
s3, backfilling sand and stone soil dug in the river and lake treatment process, leveling the bottom surface of the river and lake by using a large forklift and a rolling machine, paving sand with the particle size of 1mm to obtain a lower cushion layer with the thickness of 10cm, and paving the core decontamination layer filling material on the surface of the lower cushion layer to obtain a core decontamination layer with the thickness of 20 cm;
s4, paving gravel on the surface of the core decontamination layer to obtain a reverse filtering layer with the thickness of 10cm, and paving cobble on the surface of the reverse filtering layer to obtain a protective layer with the thickness of 20cm, wherein the compaction density of each layer is 95%.
Fig. 1 shows a schematic structural diagram in an embodiment of the present invention.
Comparative example
The difference between the comparative example and the example is that: in the step S2, a core decontamination layer is not arranged and is replaced by a reverse filtering layer, and other structures and preparation methods are the same.
Test example 1
The interception performance of the novel organic pollutant interception system of the reclaimed water recycling river and lake undercurrent zone on novel organic pollutant perfluorinated compounds (PFAS) is tested: the potential of the river channel underflow zone sewage interception system for intercepting persistent novel organic pollutant perfluorinated compounds (PFAS) is tested by adopting the underflow zone structures prepared in the examples and the comparative examples, and the hydraulic load is 50L/(m) 2 D), initial concentration of Σ PFASs 3000ng/L.
And (3) testing results: the interception capacity of the novel organic pollutant interception system of the reclaimed water recycling river and lake subsurface flow zone of the embodiment on short-chain perfluorocarboxylic acid (C3-PFBA, C4-PFPeA, C5-PFHxA and C6-PFHpA) and perfluorosulfonate (C4-PFSA) is about 50 percent, and the removal rate of long-chain perfluorocarboxylic acid (C7-PFOA, C8-PFNA, C9-PFDA, C10-PFUnDA and C11-PFDoDA) and perfluorosulfonate (C6-PFHxS and C8-PFOS) is as high as 90 percent; whereas the latent flow belt structure of the comparative example had no trapping effect on the perfluorinated compounds (PFAS).
Test example 2
The interception performance of the novel organic pollutant interception system of the reclaimed water reuse river and lake subsurface flow zone on novel organic pollutant medicines and personal care products (PPCPs) is tested: three target drugs (PCs) such as Amoxicillin (AMX), caffeine (CF) and Ibuprofen (IBU) are selected, and the sewage interception efficiency of the novel organic pollutant interception system of the reclaimed water reuse river and lake underflow zone of the embodiment on the drugs is tested. In a plastic circular container with the diameter of 30cm and the height of 40cm, a lower cushion layer (5 cm), a reverse filtering layer (5 cm) and a protective layer (10 cm) are respectively constructed by using fine gravels, coarse gravels and pebbles, a core decontamination layer (10 cm) is composed of a homogeneous mixture of biochar and river bed sand, a subsurface flow zone sewage interception system described in the embodiment is simulated, and the initial PCs concentration is set to be 1000 mug/L.
And (3) testing results: the retention rates of the examples for Amoxicillin (AMX), caffeine (CF) and Ibuprofen (IBU) were 44.07%, 65.03% and 54.70%, respectively.
Test example 3
The interception performance of the novel organic pollutant interception system of the reclaimed water reuse river and lake underflow zone on novel organic pollutant Endocrine Disruptors (EDCs) is tested: six Endocrine Disruptors (EDCs) such as estrone (E1), 17 beta-estradiol (E2), estradiol (E3), 17 alpha-ethinyl estradiol (EE 2), bisphenol A (BPA) and 4-tert-butylphenol (4 tBP) were selected, and the retention efficiency of the interception system of the example on the endocrine disruptors was examined by equilibrium adsorption test. The initial concentration of endocrine disruptors is about 500. Mu.g/L.
And (3) testing results: when the consumption of the biochar is increased to 500mg/L from 100mg/L, the retention efficiency of the biomembrane-biochar sewage interception system on E1, E2, E3, EE2, BPA and 4tBP is increased to 100 percent from 20 to 50 percent.
In conclusion, compared with the common river and lake underflow belt structure, the novel organic pollutant interception system for reclaimed water reuse river and lake underflow belt of the invention can intercept Persistent Organic Pollutants (POP) S ) Novel Endocrine Disruptors (EDCs), pharmaceutical Products and Personal Care Products (PPCPs)Organic pollutants have more efficient pollutant interception performance.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. The novel organic pollutant intercepting system for the reclaimed water reuse river and lake subsurface flow zone is characterized by comprising a lower cushion layer, a core pollutant purifying layer, a reverse filtering layer and a protective layer, wherein the core pollutant purifying layer is arranged on the surface of the lower cushion layer, the reverse filtering layer is arranged on the surface of the core pollutant purifying layer, the protective layer is arranged on the surface of the reverse filtering layer, and the lower cushion layer is arranged on the surface of a river bed or a lake bed;
the core decontamination layer comprises a biological membrane-active biological carbon compound, and the biological membrane-active biological carbon compound is obtained by growing microorganisms in river and lake in-situ sediments on active biological carbon; the river bed or the lake bed is a river bed or a lake bed of the reclaimed water receiving water body.
2. The system for intercepting new organic pollutants in reclaimed water for a river and lake subsurface flow zone as claimed in claim 1, wherein the activated biochar comprises biochar obtained by calcining biological materials at high temperature under an anaerobic condition, and the particle size of the biochar is 0.5-2mm.
3. The system for intercepting new organic pollutants in the reclaimed water for the river and lake subsurface flow zone as claimed in claim 2, wherein the activated charcoal further comprises a microbial carbon source, and the microbial carbon source is selected from one or more of LB culture medium, glucose, starch and sodium acetate.
4. The system for intercepting new organic pollutants in reclaimed water for a river and lake undercurrent zone as claimed in claim 2, wherein the biological material is selected from one or more of municipal garden greening waste and crop waste.
5. The system for intercepting new organic pollutants in reclaimed water for a river and lake subsurface flow zone as claimed in claim 1, wherein the in-situ microorganisms comprise microorganisms contained in-situ sediments or soil of the river and lake.
6. The construction method of the novel organic pollutant intercepting system for the reclaimed water recycled as the river and lake subsurface flow zone in any one of claims 1 to 5 is characterized by comprising the following steps:
s1, calcining the biological material at high temperature under an anaerobic condition, mixing the calcined biological material with a microbial carbon source, and soaking to obtain active charcoal rich in nutrients required by microbial growth;
s2, mixing and uniformly mixing the in-situ fresh sediments of the river and the lake, the river sand and the active biochar under the saturated water content, and performing pre-culture treatment to obtain a core decontamination layer filling material;
s3, after leveling a river bed or a lake bed, paving sand to obtain a lower cushion layer, and then paving the core decontamination layer filling material on the surface of the lower cushion layer to obtain a core decontamination layer;
s4, paving gravel on the surface of the core decontamination layer to obtain a reverse filtering layer, and paving cobble on the surface of the reverse filtering layer to obtain a protective layer.
7. The method for constructing the system for intercepting the sewage of the novel organic pollutants in the reclaimed water for the river and lake subsurface flow zone according to claim 6, wherein in the step S1, the temperature of the high-temperature calcination is 700-900 ℃.
8. The construction method of the novel organic pollutant intercepting system for the reclaimed water reused in the river and lake subsurface flow zone as claimed in claim 6, wherein in step S2, the mass ratio of the river and lake in-situ fresh sediments, the river sand and the activated charcoal is 1 (2-4) to (1-2).
9. The construction method of the novel organic pollutant intercepting system for the reclaimed water reused river and lake subsurface flow zone according to claim 6, wherein the thickness of the core pollutant cleaning layer is 15-30cm, the thickness of the reverse filtering layer is 8-15cm, and the thickness of the protective layer is 15-25cm.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936884A (en) * | 2012-11-21 | 2013-02-20 | 中国农业大学 | Method for reducing permeability of regenerated water riverway |
| CN109607940A (en) * | 2018-12-12 | 2019-04-12 | 广州市水电建设工程有限公司 | A kind of river restorative procedure |
| CN112239268A (en) * | 2020-10-10 | 2021-01-19 | 国投生物科技投资有限公司 | Application of biological carbon particles in acclimation of anaerobic activated sludge, anaerobic activated sludge and acclimation method and application thereof |
| CN114029340A (en) * | 2021-11-09 | 2022-02-11 | 中国科学院南京土壤研究所 | Application of biological PRB of biological carbon coupled microorganism in restoration of polycyclic aromatic hydrocarbon polluted site |
| CN114890555A (en) * | 2022-05-17 | 2022-08-12 | 沈阳建筑大学 | Solid microbial preparation for treating rural black and odorous water body and preparation method and application thereof |
-
2022
- 2022-08-19 CN CN202210996270.7A patent/CN115417558A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936884A (en) * | 2012-11-21 | 2013-02-20 | 中国农业大学 | Method for reducing permeability of regenerated water riverway |
| CN109607940A (en) * | 2018-12-12 | 2019-04-12 | 广州市水电建设工程有限公司 | A kind of river restorative procedure |
| CN112239268A (en) * | 2020-10-10 | 2021-01-19 | 国投生物科技投资有限公司 | Application of biological carbon particles in acclimation of anaerobic activated sludge, anaerobic activated sludge and acclimation method and application thereof |
| CN114029340A (en) * | 2021-11-09 | 2022-02-11 | 中国科学院南京土壤研究所 | Application of biological PRB of biological carbon coupled microorganism in restoration of polycyclic aromatic hydrocarbon polluted site |
| CN114890555A (en) * | 2022-05-17 | 2022-08-12 | 沈阳建筑大学 | Solid microbial preparation for treating rural black and odorous water body and preparation method and application thereof |
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Application publication date: 20221202 |