CN113860544A - Efficient algae-laden water separation resource utilization system and method - Google Patents
Efficient algae-laden water separation resource utilization system and method Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 238000000926 separation method Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title abstract description 27
- 241000195493 Cryptophyta Species 0.000 claims abstract description 127
- 238000005345 coagulation Methods 0.000 claims abstract description 35
- 230000015271 coagulation Effects 0.000 claims abstract description 35
- 238000000855 fermentation Methods 0.000 claims abstract description 19
- 230000004151 fermentation Effects 0.000 claims abstract description 19
- 238000004062 sedimentation Methods 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 230000018044 dehydration Effects 0.000 claims abstract description 10
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 10
- 239000013049 sediment Substances 0.000 claims abstract description 9
- 238000003860 storage Methods 0.000 claims abstract description 8
- 239000002002 slurry Substances 0.000 claims description 36
- 239000000701 coagulant Substances 0.000 claims description 12
- 239000003814 drug Substances 0.000 claims description 11
- 238000004064 recycling Methods 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 6
- 239000003895 organic fertilizer Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- 230000003139 buffering effect Effects 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000003337 fertilizer Substances 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 235000010855 food raising agent Nutrition 0.000 description 4
- 239000000047 product Substances 0.000 description 3
- 239000003053 toxin Substances 0.000 description 3
- 231100000765 toxin Toxicity 0.000 description 3
- 108700012359 toxins Proteins 0.000 description 3
- 239000003463 adsorbent Substances 0.000 description 2
- 239000003139 biocide Substances 0.000 description 2
- 239000013065 commercial product Substances 0.000 description 2
- 238000012851 eutrophication Methods 0.000 description 2
- 239000008394 flocculating agent Substances 0.000 description 2
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- 206010063385 Intellectualisation Diseases 0.000 description 1
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- 230000002159 abnormal effect Effects 0.000 description 1
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- 239000010865 sewage Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
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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
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F11/00—Other organic fertilisers
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/20—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation using specific microorganisms or substances, e.g. enzymes, for activating or stimulating the treatment
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/40—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention provides a high-efficiency algae-laden water separation resource utilization system and a method, and the system sequentially comprises the following devices: a sedimentation tank, a primary coagulation device, an algae separator, a separation water tank, an algae residue buffer, a centrifuge, a fermentation tank and a storage bin. Whole production is accomplished at automatic in-process, especially through carrying out one-level, second grade to the algae thick liquid and thoughtlessly congeal the processing after, can furthest promote algae separation effect, reduces the separation time, accomplishes high-efficient separation, reduces the energy consumption, and the water of separation goes out the water in succession, and quality of water can discharge up to standard, and the algae sediment of separation is after centrifugal dehydration, carries out fermentation treatment and becomes algae sediment slowly-releasing fertilizer, lets the algae sediment realize waste utilization.
Description
Technical Field
The invention relates to a method and a system, in particular to a high-efficiency algae-laden water separation resource utilization system and a high-efficiency algae-laden water separation resource utilization method, and belongs to the technical field of water body purification treatment.
Background
The eutrophication of the water body easily causes the abnormal proliferation of certain characteristic algae (such as blue algae), so that the transparency of the water body is reduced, the dissolved oxygen content is reduced, the water quality is deteriorated, and further the survival of fishes and other organisms is influenced, meanwhile, as 80 percent of the algae can secrete algal toxins, serious harm is caused to people, animals and organisms, and in addition, the frequent outbreak of the algae caused by the eutrophication of the water body in recent years causes the water body in lakes to lose the utilization value as drinking water, and the harm which is difficult to reverse is brought to the environment.
Currently, as methods for controlling algae, there are mainly physical algae removal methods, chemical algae removal methods, biological algae control methods, etc., and a large amount of money is invested for these methods, but the method has little effect because of the following reasons: the physical algae removal method has the defects of large investment, long treatment period, poor effect and the like due to water diversion, water exchange, adsorption, filtration, mechanical fishing and the like, wherein the filtration and adsorption method is convenient to operate, and the adsorbent is natural and nontoxic, but a large amount of residual algae toxins in the adsorbent easily cause potential environmental, economic and public health risks; the mechanical fishing efficiency is high, but the dehydration rate is lower (less than 10 percent), the energy consumption of the subsequent process is increased, and the equipment investment is large; the operation process of water diversion and water change is complex, a large amount of clean water sources are needed, and the consumption is huge; the chemical algae-removing method mainly comprises the steps of adding a chemical algae-killing agent, a flocculating agent and the like, compared with a physical method, the chemical algae-removing method has less equipment investment, but some algae-killing agents or flocculating agents can ensure that algae cells are subjected to lysis and release algal toxins into a water body, so that the subsequent sewage treatment difficulty is increased, and the human health is harmed. There is therefore a need for improvements in the prior art.
Disclosure of Invention
In order to solve the problems of the physical algae removal method and the chemical algae removal method adopted by the existing water body algae treatment, the invention provides a method and a system for high-efficiency algae-laden water separation and resource utilization.
The invention is completed by the following technical scheme: the system for high-efficiency algae-laden water separation and resource utilization is characterized by sequentially comprising the following devices: a sedimentation tank, a primary coagulation device, an algae separator, a separation water tank, an algae residue buffer, a centrifuge, a fermentation tank and a storage bin.
The primary coagulation equipment and the primary coagulation equipment respectively comprise a cylinder body with a cavity therein, a feeding port and a discharging port thereon and a stirring blade in the cavity, so that the algae pulp, the coagulant and the medicament are coagulated by the stirring blade.
The feed inlets of the primary coagulation equipment and the primary coagulation equipment are respectively connected with the screw conveyer, so that when the screw conveyer is used for conveying the algae slurry, the corresponding coagulant and the corresponding medicament are put into the screw conveyer and then are sent into the primary coagulation equipment and the primary coagulation equipment to finish coagulation.
The algae separator is a conventional vibrating screen classifier.
And a filter screen is arranged at the bottom of the separation water tank.
A filter screen is arranged in the algae residue buffer.
The centrifuge is conventional equipment, and its discharge gate links to each other with screw conveyer to the sediment of irritating that will centrifuge and send out through screw conveyer.
And a feed inlet of the fermentation tank is connected with the screw conveyor so as to feed the leavening agent into the fermentation tank for fermentation by the screw conveyor.
And a spiral conveyor is connected between the fermentation tank discharge port and the feed inlet of the storage bin.
The invention is completed by the following technical scheme: a method for efficient algae-laden water separation and resource utilization is characterized by comprising the following steps:
1) sending the algae slurry in the water body into a sedimentation tank for sedimentation, so that sediment and heavy impurities in the algae slurry are precipitated, sending the upper algae slurry after sedimentation into primary coagulation equipment, and adding a coagulant into the algae slurry for coagulation according to the mass ratio of the coagulant to the algae slurry = 5-15: 100 to obtain primary coagulated algae slurry;
2) feeding the primary coagulated algae slurry obtained in the step 1) into secondary coagulation equipment, and adding a medicament into the secondary coagulated algae slurry according to the mass ratio of the medicament to the algae slurry = 0.5-10: 100 to perform secondary coagulation to obtain secondary coagulated algae slurry;
3) allowing the secondary coagulated algae slurry obtained in the step 2) to automatically flow from a high position into a low position algae separator, and performing primary filtration and separation to obtain water below a primary filter screen and algae residue liquid on the primary filter screen;
4) enabling the water separated in the step 3) to flow into a separation water tank, performing secondary filtration and separation to obtain algae-containing liquid on a secondary filter screen and water below the secondary filter screen, discharging the water below the secondary filter screen, and enabling the algae-containing liquid on the secondary filter screen to flow back to the algae-containing water separation equipment in the step 3) for algae-containing water separation;
5) sending the algae residue liquid on the primary filter screen in the step 3) into an algae residue buffer for buffering;
6) the algae residue obtained in the step 5) is sent into a centrifugal machine for dehydration, the tail water after dehydration is returned into the sedimentation tank obtained in the step 1) for recycling, and the algae residue after dehydration is sent into a fermentation tank;
7) adding a proper amount of a leaven into the algae residue obtained in the step 6), and fermenting for 7-20 days at 55-70 ℃ to obtain the algae residue slow-release organic fertilizer;
8) and (4) feeding the algae residue slow-release organic fertilizer obtained in the step (7) into a bin to finish the high-efficiency algae-laden water separation and resource utilization.
The coagulant in the step (1) is a commercial product.
The medicament in the step (1) is a commercially available product.
The leavening agent in the step (3) is a commercial product.
The invention has the following advantages and effects: adopt above-mentioned scheme, make whole production accomplish in automatic process, especially through carrying out the one-level to the algae thick liquid, after the second grade coagulation treatment, can furthest promote algae separation effect, reduce the separation time, when carrying out the algae separation through the algae separating centrifuge, accomplish high-efficient separation, and showing and reducing the energy consumption, the separation water of separating out goes out the water continuous, water quality can discharge up to standard, the algae sediment after the separation is through centrifugal dehydration after, carry out fermentation treatment and become algae sediment slowly-releasing fertilizer, let the algae sediment realize waste utilization, avoid secondary pollution. The whole algae separation and resource treatment process can realize automation and intellectualization, reduce human interference, stably control the product quality and uniformity, improve the production efficiency and the product yield, and reduce the energy consumption so as to meet the requirements of the water area treatment capability, the water quality stability, the formula applicability, the energy conservation, the consumption reduction and other technologies and processes in the large-scale industrial production of the algae separation in the water area. It is an ideal processing method and system.
Drawings
FIG. 1 is a system and process flow diagram of the present invention.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1
The invention provides a high-efficiency algae-laden water separation resource utilization system, which sequentially comprises the following devices: a sedimentation tank, primary coagulation equipment, an algae separator, a separation water tank, an algae residue buffer, a centrifuge, a fermentation tank and a storage bin;
the primary coagulation equipment and the primary coagulation equipment respectively comprise a cylinder body with a cavity therein, a feeding port and a discharging port thereon and a stirring blade in the cavity, so that the algae pulp, the coagulant and the medicament are coagulated by the stirring blade;
the feed inlets of the primary coagulation equipment and the primary coagulation equipment are respectively connected with the screw conveyer, so that when the screw conveyer is used for conveying the algae slurry, corresponding coagulant and medicament are put into the screw conveyer and then are sent into the primary coagulation equipment and the primary coagulation equipment to finish coagulation;
the algae separator is a conventional vibrating screen classifier; a filter screen is arranged at the bottom of the separation water tank; a filter screen is arranged in the algae residue buffer; the centrifuge is conventional equipment, and a discharge port of the centrifuge is connected with the screw conveyor so as to send out the centrifugally separated pouring slag through the screw conveyor; the feed inlet of the fermentation tank is connected with the screw conveyor so as to feed the leavening agent into the fermentation tank for fermentation by the screw conveyor; and a spiral conveyor is connected between the fermentation tank discharge port and the feed inlet of the storage bin.
Example 2
The invention provides a method for efficient algae-laden water separation and resource utilization, which comprises the following steps:
1) sending the algae slurry in the water body into a sedimentation tank through a first water pump for sedimentation to allow silt and heavy impurities in the algae slurry to be precipitated, sending the upper algae slurry after sedimentation into a first spiral conveyer through a second water pump, adding a coagulant into the algae slurry of the first spiral conveyer according to the mass ratio of the coagulant to the algae slurry = 5-15: 100, and sending the coagulant and the algae slurry into primary coagulation equipment for primary coagulation to obtain primary coagulated algae slurry;
2) automatically flowing the primary coagulated algae slurry obtained in the step 1) from a high position into a low position second spiral conveyor, adding a medicament into the algae slurry of the second spiral conveyor according to the mass ratio of the medicament to the algae slurry = 0.5-10: 100, and sending the mixture into secondary coagulation equipment for secondary coagulation to obtain secondary coagulated algae slurry;
3) allowing the secondary coagulated algae slurry obtained in the step 2) to automatically flow from a high position into a low position algae separator, and performing primary filtration and separation to obtain water below a primary filter screen and algae residue liquid on the primary filter screen;
4) enabling the water separated in the step 3) to flow into a separation water tank, performing secondary filtration and separation to obtain algae-containing liquid on a secondary filter screen and water below the secondary filter screen, discharging the water below the secondary filter screen, and returning the algae-containing liquid on the secondary filter screen to the algae-containing water separation equipment in the step 3) through a third water pump for algae-containing water separation;
5) allowing the algae residue liquid on the primary filter screen in the step 3) to automatically flow into an algae residue buffer for buffering;
6) sending the algae residue obtained in the step 5) into a centrifugal machine through a fourth water pump for dehydration, returning the dehydrated tail water into the sedimentation tank obtained in the step 1) through a fifth water pump for recycling, and sending the dehydrated algae residue into a fermentation tank through a third screw conveyer;
7) feeding a proper amount of a leavening agent into the algae residue obtained in the step 6) through a fourth screw conveyor, and fermenting for 7-20 days at 55-70 ℃ to obtain an algae residue slow-release organic fertilizer;
8) and (4) sending the algae residue slow-release organic fertilizer obtained in the step (7) into a storage bin through a fifth screw conveyor, and completing the high-efficiency algae-laden water separation resource utilization.
Claims (10)
1. The system for high-efficiency algae-laden water separation and resource utilization is characterized by sequentially comprising the following devices: a sedimentation tank, a primary coagulation device, an algae separator, a separation water tank, an algae residue buffer, a centrifuge, a fermentation tank and a storage bin.
2. The system for separating algae water and recycling resources as claimed in claim 1, wherein the primary coagulation equipment and the primary coagulation equipment comprise a cylinder body with a cavity therein, a feeding port and a discharging port thereon, and a stirring blade in the cavity.
3. The system for separating and recycling high-efficiency algae water according to claim 1, wherein the feed inlets of the first-stage coagulation equipment and the first-stage coagulation equipment are respectively connected with a screw conveyor.
4. The system for separating and recycling the algae according to claim 1, wherein the algae separator is a conventional vibrating screen.
5. The system for separating and recycling the algae water according to claim 1, wherein a filter screen is arranged at the bottom of the separation water tank.
6. The system for separating and recycling algae water according to claim 1, wherein a filter screen is disposed in the algae residue buffer.
7. The system for separating algae water and recycling resources as claimed in claim 1, wherein the centrifuge is a conventional device, and the discharge port of the centrifuge is connected with a screw conveyor.
8. The system for separating algae water and recycling resources as claimed in claim 1, wherein a feed inlet of the fermentation tank is connected with a screw conveyor.
9. The system for separating algae water and recycling resources according to claim 1, wherein a screw conveyor is connected between a discharge port of the fermentation tank and a feed inlet of the storage bin.
10. The system for high-efficiency algae-laden water separation and resource utilization is characterized by comprising the following steps:
1) sending the algae slurry in the water body into a sedimentation tank for sedimentation, so that sediment and heavy impurities in the algae slurry are precipitated, sending the upper algae slurry after sedimentation into primary coagulation equipment, and adding a coagulant into the algae slurry for coagulation according to the mass ratio of the coagulant to the algae slurry = 5-15: 100 to obtain primary coagulated algae slurry;
2) feeding the primary coagulated algae slurry obtained in the step 1) into secondary coagulation equipment, and adding a medicament into the secondary coagulated algae slurry according to the mass ratio of the medicament to the algae slurry = 0.5-10: 100 to perform secondary coagulation to obtain secondary coagulated algae slurry;
3) allowing the secondary coagulated algae slurry obtained in the step 2) to automatically flow from a high position into a low position algae separator, and performing primary filtration and separation to obtain water below a primary filter screen and algae residue liquid on the primary filter screen;
4) enabling the water separated in the step 3) to flow into a separation water tank, performing secondary filtration and separation to obtain algae-containing liquid on a secondary filter screen and water below the secondary filter screen, discharging the water below the secondary filter screen, and enabling the algae-containing liquid on the secondary filter screen to flow back to the algae-containing water separation equipment in the step 3) for algae-containing water separation;
5) sending the algae residue liquid on the primary filter screen in the step 3) into an algae residue buffer for buffering;
6) the algae residue obtained in the step 5) is sent into a centrifugal machine for dehydration, the tail water after dehydration is returned into the sedimentation tank obtained in the step 1) for recycling, and the algae residue after dehydration is sent into a fermentation tank;
7) adding a proper amount of a leaven into the algae residue obtained in the step 6), and fermenting for 7-20 days at 55-70 ℃ to obtain the algae residue slow-release organic fertilizer;
8) and (4) feeding the algae residue slow-release organic fertilizer obtained in the step (7) into a bin to finish the high-efficiency algae-laden water separation and resource utilization.
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| CN110642472A (en) * | 2019-10-24 | 2020-01-03 | 云南农业大学 | Mixed flocculant and method for treating cyanobacterial bloom by using same |
| CN112062238A (en) * | 2019-06-11 | 2020-12-11 | 伟泰科技（无锡）有限公司 | Comprehensive utilization system for blue algae treatment |
| CN213707980U (en) * | 2020-11-09 | 2021-07-16 | 达斯玛环境科技（北京）有限公司 | Integrated device for treating sewage containing algae substances |
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-
2021
- 2021-09-25 CN CN202111124870.6A patent/CN113860544A/en active Pending
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|---|---|---|---|---|
| CN1762847A (en) * | 2004-10-19 | 2006-04-26 | 殷肇君 | Method for cleaning out blue algae of water area |
| CN101602533A (en) * | 2009-07-13 | 2009-12-16 | 西南化工研究设计院 | A kind of method of controlling blue-green alga bloom |
| KR20110138620A (en) * | 2010-06-21 | 2011-12-28 | (주)승영기술공사 | Apparatus for removing algae and method for removing algae using the same |
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| CN218146124U (en) * | 2021-09-25 | 2022-12-27 | 云南昆船环保技术有限公司 | High-efficient algae moisture utilization resource system |
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