CN115417505A - Utilize industrial waste gas CO 2 Method for increasing carbon sink of water body and relieving eutrophication - Google Patents

Utilize industrial waste gas CO 2 Method for increasing carbon sink of water body and relieving eutrophication Download PDF

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CN115417505A
CN115417505A CN202211143988.8A CN202211143988A CN115417505A CN 115417505 A CN115417505 A CN 115417505A CN 202211143988 A CN202211143988 A CN 202211143988A CN 115417505 A CN115417505 A CN 115417505A
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water body
eutrophication
aquatic ecosystem
aquatic
waste gas
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刘再华
柳星
赵敏
张伊
曾思博
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Institute of Geochemistry of CAS
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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
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/62—Carbon oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/84—Biological processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/50—Carbon oxides
    • B01D2257/504—Carbon dioxide
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
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  • General Chemical & Material Sciences (AREA)
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  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
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Abstract

The invention discloses a method for utilizing industrial waste gas CO 2 A method for increasing carbon sink of water body and relieving eutrophication comprises the following steps of cultivating an aquatic ecosystem symbiotic with planktonic and submerged plants; the aquatic ecosystem is an ecosystem formed by an aquatic organism community and a water environment; filling industrial waste gas CO into water body of aquatic ecosystem 2 To make CO in the water body of the aquatic ecosystem 2 Partial pressure of at least 570ppm; adjusting CO according to the content and proportion of nitrogen and phosphorus in the aquatic ecosystem water body in the step one 2 The filling amount and the content and the proportion of nitrogen and phosphorus in the water body of the aquatic ecosystem ensure that CO is generated 2 With NO 3 ‑ In a molar ratio of more than 50,CO 2 And PO 4 3‑ Mole ofThe ratio is greater than 3000; the method can adjust the community structure of the floating or submerged plants, and solves the problems of high cost, slow effect, difficult popularization and unobvious effect of the carbon sequestration and sequestration technology in the general technology, thereby achieving the purposes of improving the carbon sequestration amount of the water body and relieving the eutrophication of the water body.

Description

Utilize industrial waste gas CO 2 Method for increasing carbon sink of water body and relieving eutrophication
Technical Field
The invention relates to the technical field of water body carbon sequestration and water body eutrophication, in particular to a method for utilizing industrial waste gas CO 2 A method for increasing water carbon sink and relieving eutrophication.
Background
CO from fossil fuel combustion 2 The discharge destroys the carbon source sink process in relative balance in nature. In order to cope with climate change, on one hand, CO can be reduced by energy conservation and emission reduction 2 On the other hand, the Carbon Capture and Storage capacity can be increased by the Carbon Capture and Storage technology CCS, so as to achieve the aim of controlling the climate warming. In addition to artificial CCS technology, certain physical, chemical and biological processes in nature, such as rock weathering and biophotonic interactions, can also be used to achieve atmospheric CO 2 May be referred to as a natural process CCS. The water body carbon sequestration and sink increase technology is widely concerned in recent years, the idea is to develop a corresponding technical method based on mechanisms such as a biological pump, a micro biological carbon pump, a carbonate pump and the like or a combination of the mechanisms, for example, based on the biological pump principle, earth engineering technologies such as Ocean Iron Fertilization and the like aiming at increasing Ocean carbon sink have been developed. It has been found that photosynthesis by aquatic photosynthetic organisms is significantly limited by carbon, especially in high pH karst and eutrophic waters. High CO content 2 The concentration can stimulate aquatic photosynthesis to fix carbon and improve the carbon sink of the water body. In addition, high CO 2 The water body environment with the concentration is beneficial to the growth of green algae-diatom and submerged plants, and can relieve the occurrence of blue algae type eutrophication to a certain extent.
At present, the stimulation effect of factors such as illumination intensity, temperature, nutrient salt and the like on aquatic photosynthesis is mostly considered in general technologies, and the general problems of the invention technologies are that the illumination and the temperature are not main limiting factors of the photosynthesis, the promotion on the photosynthesis is small, and the factors and other factors such as nutrient elements act together, so that the investment or the yield is low, and a large-area popularization method is not available; the excessive nutrient salt can cause water eutrophication and threaten the water quality safety.
A few of the invention technologies considering the stimulation effect of carbon on photosynthesis mainly consider the influence of inorganic carbon DIC dissolved in water, the carbon sequestration process relates to rock weathering, water circulation, aquatic carbon sequestration and the like, the carbon sequestration efficiency is jointly regulated and controlled by various factors, the carbon sequestration efficiency influence factors are more, and the application scene is limited. And the method usually relates to the change of land utilization types, needs to balance the influences of economy, agriculture, environment and the like, and has the problems of high cost, slow effect, difficult popularization and unobvious effect of the carbon sequestration and sequestration technology.
Disclosure of Invention
Based on the above, the method provides a method for utilizing industrial waste gas CO 2 The method for increasing the carbon sink of the water body and relieving the eutrophication solves the problems of high cost, slow effect, difficult popularization and unobvious effect of the carbon-fixing and sink-increasing technology in the general technology, thereby achieving the purposes of improving the carbon sink amount of the water body and relieving the eutrophication of the water body.
The technical scheme of the invention is as follows:
by using industrial waste gas CO 2 The method for increasing the carbon sink of the water body and relieving eutrophication comprises the following steps:
the method comprises the following steps: cultivating an aquatic ecosystem with symbiosis of phytoplankton and submerged plants;
the aquatic ecosystem is an ecosystem formed by an aquatic organism community and a water environment;
step two: filling industrial waste gas CO into the water body of the aquatic ecosystem in the step one 2 To make CO in the water body of the aquatic ecosystem 2 Partial pressure of at least 570ppm;
step three: adjusting CO in the second step according to the content and proportion of nitrogen and phosphorus in the aquatic ecosystem water body in the first step 2 The filling amount and the content and the proportion of nitrogen and phosphorus in the water body of the aquatic ecosystem ensure that CO is generated 2 With NO 3 - In a molar ratio of more than 50,CO 2 And PO 4 3- Mole ofThe ratio is greater than 3000;
step four: and (5) adjusting the structure of the phytoplankton or the submerged plant community at the same time of the step three.
The principle of the scheme is as follows:
the invention makes full use of the industrial waste gas CO with lower cost 2 Introduction of CO into 2 Introduced into aquatic ecosystem to increase CO in water body 2 The concentration, on the one hand, plays a role of CO 2 The fertilizer application effect stimulates the productivity of the water body, improves the carbon sink amount of the aquatic photosynthesis, has important carbon sink significance, and provides an economic and feasible sink increasing path for effectively coping with climate change. On the other hand, the high CO formed 2 The water body environment with high concentration and high C or N, C or P is favorable for the growth of submerged plants, delays the eutrophication process of the water body, improves the water quality condition, forms an aquatic ecosystem with landscape value, and is CO in the water body 2 The method can promote the photosynthesis of aquatic photosynthetic organisms, increase the carbon sink amount of the water body, and adjust the proportion of the nutrient elements of the water body, thereby regulating and controlling the structure of the plankton or submerged plant community, leading submerged plants and phytoplankton to be the main in the water body, and leading green algae and diatom to be the main in the phytoplankton.
Preferably, the first step comprises selecting submerged plant species, controlling submerged plant planting density range and controlling phytoplankton biomass; the selection of the species of the submerged plants can repair eutrophication and can utilize HCO in the water body 3 - Can utilize CO 2 The submerged plant of (1); the planting density range of the submerged plants is controlled to be 200-500 plants/m 3 (ii) a The phytoplankton biomass is controlled to be less than 10 mu g/L.
Preferably, in the second step, CO with different depths, positions and flows are set according to the coverage area, the water depth and the flow velocity of the water body 2 The filling point of (1); it is also desirable to adjust the CO based on air temperature, rainfall, radiation intensity and wind speed in the daily meteorological conditions, and seasonal variations 2 Daily fill time.
The invention has the beneficial effects that:
1. is favorable for relieving richnessThe development of the eutrophication process realizes the synchronous achievement of the aims of carbon sink increase and eutrophication relief, relieves the eutrophication, reduces the carbon sink cost by increasing the carbon sink, improves the water quality condition, realizes the synchronous achievement of the carbon sink increase and the eutrophication relief, and utilizes the industrial emission of CO 2 Greatly improves the carbon sequestration and sink increase efficiency of the water body, and solves the problems of high cost, slow effect, difficult popularization and unobvious effect of the carbon sequestration and sink increase technology in the general technology, thereby achieving the purposes of improving the carbon sequestration amount of the water body and relieving the eutrophication of the water body.
2. Is favorable for ensuring a considerable amount of primary producers in the water body and realizing the treatment of CO 2 The full utilization of the water is realized.
3. Ensure that sufficient CO exists in the water body 2 Meet the carbon requirement of photosynthesis, stimulate the photosynthesis and improve the sink of aquatic carbon.
Drawings
FIG. 1 shows a process for utilizing industrial waste gas CO according to an embodiment of the present invention 2 A flow diagram of a method for increasing water carbon sink and relieving eutrophication;
FIG. 2 is a schematic diagram showing the relationship between the planting density and biomass of Goldfish algae according to the embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating the relationship between planting density and biomass of foxtail ear flower in the embodiment of the present invention;
FIG. 4 is a graph showing the relationship between the planting density and biomass of the waterweeds in the example of the present invention;
FIG. 5 is a schematic diagram showing the relationship between the biomass of submerged plants in Guizhou grass sea and the biomass of phytoplankton in the example of the present invention;
FIG. 6 is a graphical representation of DIC dissolved inorganic carbon vs. organic carbon sequestration described in examples herein;
FIG. 7 is a CO according to an embodiment of the present invention 2 A relationship diagram of partial pressure and chlorophyll;
FIG. 8 shows a CO according to an embodiment of the present invention 2 With NO 3 - The relationship between the molar ratio of the (b) and the blue algae or the diatom and the green algae is shown in a schematic diagram;
FIG. 9 is a CO described in the example of the present invention 2 And PO 4 3 -a graph of the molar ratio of cyanobacteria or diatom + chlorella;
FIG. 10 is a CO described in the example of the present invention 2 With NO 3 - The relationship between the molar ratio of (a) and submerged plants is shown schematically;
FIG. 11 is a CO as described in the examples of the present invention 2 And PO 4 3 A schematic representation of the relationship of the molar ratio of (a) - (b) to submerged plants;
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example (b):
utilize industrial waste gas CO 2 The method for increasing the carbon sink of the water body and relieving eutrophication comprises the following steps:
the method comprises the following steps: cultivating an aquatic ecosystem with symbiosis of planktonic and submerged plants;
the aquatic ecosystem is an ecosystem formed by an aquatic organism community and a water environment;
step two: filling industrial waste gas CO into the water body of the aquatic ecosystem in the step one 2 To make CO in the water body of the aquatic ecosystem 2 Partial pressure of at least 570ppm;
step three: adjusting CO in the second step according to the content and proportion of nitrogen and phosphorus in the aquatic ecosystem water body in the first step 2 The filling amount and the content and the proportion of nitrogen and phosphorus in the water body of the aquatic ecosystem ensure that CO is generated 2 With NO 3 - In a molar ratio of more than 50,CO 2 And PO 4 3- Is greater than 3000;
step four: and (5) adjusting the structure of the phytoplankton or the submerged plant community at the same time of the third step.
The invention makes full use of the industrial waste gas CO with lower cost 2 Introduction of CO into 2 Introducing into aquatic ecosystem to increase CO in water body 2 In one aspect, the concentration acts as CO 2 The fertilizer effect is utilized to stimulate the productivity of water body and improve the carbon sink amount of aquatic photosynthesis, has important carbon sink significance and effectively deals with climate changeThe method provides an economical and feasible sink increasing path. On the other hand, the high CO formed 2 The water body environment with high concentration and high C or N, C or P is favorable for the growth of submerged plants, delays the eutrophication process of the water body, improves the water quality condition, forms an aquatic ecosystem with landscape value, and is CO in the water body 2 The method can promote the photosynthesis of aquatic photosynthetic organisms, increase the carbon sink amount of the water body, adjust the proportion of nutrient elements of the water body, further regulate and control the community structure of the submerged plants, ensure that the submerged plants and the phytoplankton are mainly used in the water body, and the green algae and the diatoms are mainly used in the phytoplankton, is favorable for relieving the development of the eutrophication process, realizes the synchronous achievement of the carbon sink increase and the eutrophication relief, relieves the eutrophication, reduces the cost of the carbon sink by increasing the carbon sink, improves the water quality condition, realizes the synchronous achievement of the carbon sink increase and the eutrophication relief, and utilizes the industrial discharged CO to realize the synchronous achievement of the carbon sink increase and the eutrophication relief 2 Greatly improves the carbon sequestration and sink increase efficiency of the water body, and solves the problems of high cost, slow effect, difficult popularization and unobvious effect of the carbon sequestration and sink increase technology in the general technology, thereby achieving the purposes of improving the carbon sequestration amount of the water body and relieving the eutrophication of the water body.
As further preferred in the present invention, the first step comprises selecting the species of submerged plants, controlling the range of submerged plant planting density and controlling phytoplankton biomass; the selection of the species of the submerged plants can repair eutrophication and can utilize HCO in the water body 3 - And can utilize CO 2 The submerged plant of (1); the planting density range of the submerged plant is controlled to be 200-500 plants/m 3 (ii) a The phytoplankton biomass is controlled to be below 10 mu g/L, which is favorable for ensuring that a considerable number of primary producers exist in the water body and realizing CO separation 2 The full utilization of the water is realized.
It is further preferable that in the second step, CO with different depths, positions and flow rates are set according to the coverage area, water depth and flow rate of the water body 2 The fill point of (a); it is also necessary to adjust the CO according to the conditions of temperature, rainfall, radiation intensity and wind speed in the daily meteorological conditions and seasonal variations 2 The daily charging time is favorable for ensuring that sufficient CO exists in the water body 2 Carbon satisfying photosynthesisNeeds, stimulates photosynthesis and improves the carbon sink of aquatic animals.
In the invention, an aquatic ecosystem by symbiosis of phytoplankton and submerged plant needs to be cultivated, and the steps comprise the types of the submerged plant, the planting density range of the submerged plant and the biomass control of the phytoplankton;
submerged plant species: the typical submerged plant for repairing eutrophication is selected as the main material, and simultaneously, the HCO in the available water body is required to be satisfied 3 - Can also utilize CO 2 The submerged plant can better realize the carbon sink increase and the eutrophication relief of the water body. Such as Goldfish algae, watermifoil, eisenia bicyclis or hydrilla verticillata; the planting density is shown in table 1;
submerged plant Suggested planting density
Goldfish algae
454 strains/m 3
All-grass of Thinflower 227 strains/m 3
All-grass of Japanese Swertia 227 strains/m 3
Watch 1
Controlling the planting density range of the submerged plants: the invention proposes to control the submerged plants to 200-500 plants/m 3 。
The submerged plant is an extremely important aquatic primary producer, is one of important sources of carbon sink, and is also the key for relieving eutrophication. The submerged plants are controlled to be in a certain density, so that the utilization of water body nutrient substances is facilitated, and the stability of an aquatic ecosystem is facilitated. The density of the submerged plants should be determined according to the selection of the species of the submerged plants as shown in fig. 2, 3 and 4;
control of phytoplankton biomass: the invention proposes to control phytoplankton to less than 10 mug/L.
In aquatic ecosystems, especially shallow lakes, phytoplankton and submerged plants often have a mutually inhibiting relationship, such as the relationship between phytoplankton and submerged plants found in grass sea of Guizhou by the subject group of the applicant of the present invention, as shown in FIG. 5. Excessive phytoplankton can cause the transparency of the water body to be reduced and the submerged plants to be degraded, and the aquatic ecosystem is transformed from a lake with clear and submerged plants as main parts to a lake with turbid and phytoplankton as main parts. Therefore, it is recommended to control the planktonic density below 10. Mu.g/L to ensure the advantageous growth of submerged plants.
The invention relates to CO in water body of aquatic ecosystem 2 The partial pressure reaches at least 570ppm.
The invention fills CO 2 The purpose of the method is mainly as follows:
the photosynthesis of the aquatic plants is stimulated, the carbon sink of the water body is improved, the competitive advantage of the submerged and phytoplankton is changed, and the eutrophication is relieved.
In our earlier studies, we found that there is a significant positive correlation between the dissolved inorganic carbon in the water body and the organic carbon sequestration amount, i.e. the more DIC, the greater the organic carbon sequestration amount, as shown in fig. 6, which is also the core mechanism of the present invention. Although CO is not yet treated at present 2 Concentration conditions were optimized, but from our earlier experimental and research progress, CO 2 Obvious fertilizing effect on the primary productivity, biomass and organic carbon content of the aquatic ecosystem, and the CO in the water body is recommended in consideration of carbon sink economy 2 Should be greater than 570ppm as shown in FIG. 7.
The method of the invention adjusts the molar ratio CO 2 /NO 3 - >50, molar ratio CO 2 /PO 4 3- >3000, as shown in FIGS. 8 to 11, this condition is advantageous for reducing the proportion of harmful algae, cyanobacteria, in phytoplankton and increasing submerged plant biomass, thereby facilitating carbon sequestration and eutrophication mitigation.
CO utilized by the process of the invention 2 Including but not limited to industrial emission of CO 2 And can also be used for increasing CO in water bodies directly or indirectly 2 E.g. increasing HCO in a body of water 3 - 、CO 3 2- And adjusting pH to realize CO in water body 2 Concentration increase, in turn, soil CO increase by adjusting land use type 2 Further affecting the ground water and surface water CO 2 The method of (3), and the like.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention.

Claims (3)

1. By using industrial waste gas CO 2 The method for increasing the carbon sink of the water body and relieving eutrophication is characterized by comprising the following steps of:
the method comprises the following steps: cultivating an aquatic ecosystem with symbiosis of planktonic and submerged plants;
the aquatic ecosystem is an ecosystem formed by an aquatic organism community and a water environment;
step two: filling industrial waste gas CO into the water body of the aquatic ecosystem in the step one 2 To make CO in the water body of the aquatic ecosystem 2 Partial pressure of at least 570ppm;
step three: adjusting CO in the second step according to the content and proportion of nitrogen and phosphorus in the aquatic ecosystem water body in the first step 2 The filling amount and the content and the proportion of nitrogen and phosphorus in the water body of the aquatic ecosystem ensure that CO is generated 2 With NO 3 - In a molar ratio of more than 50,CO 2 And PO 4 3- Is greater than 3000;
step four: and (5) adjusting the structure of the phytoplankton or the submerged plant community at the same time of the step three.
2. The method for utilizing industrial waste gas CO according to claim 1 2 The method for increasing the carbon sink of the water body and relieving eutrophication is characterized in that the first step comprises the steps of selecting the species of submerged plants, controlling the planting density range of the submerged plants and controlling the biomass of phytoplankton; the selection of the species of the submerged plants can repair eutrophication and can utilize HCO in the water body 3 - Can utilize CO 2 The submerged plant of (1); the planting density range of the submerged plants is controlled to be 200-500 plants/m 3 (ii) a The phytoplankton biomass is controlled to be less than 10 mu g/L.
3. The method for utilizing industrial waste gas CO according to claim 1 2 The method for increasing the carbon sink of the water body and relieving eutrophication is characterized in that in the second step, CO at different depths, positions and flows are set according to the coverage area, the water depth and the flow rate of the water body 2 The fill point of (a); it is also desirable to adjust the CO based on air temperature, rainfall, radiation intensity and wind speed in the daily meteorological conditions, and seasonal variations 2 Daily fill time.
CN202211143988.8A 2022-09-20 2022-09-20 Utilize industrial waste gas CO 2 Method for increasing carbon sink of water body and relieving eutrophication Pending CN115417505A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117069270A (en) * 2023-08-18 2023-11-17 中国科学院地球化学研究所 Method for increasing carbon sink of water body and relieving eutrophication of water body

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117069270A (en) * 2023-08-18 2023-11-17 中国科学院地球化学研究所 Method for increasing carbon sink of water body and relieving eutrophication of water body

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