CN111807526B - River channel treatment method - Google Patents
River channel treatment method Download PDFInfo
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- CN111807526B CN111807526B CN202010711490.1A CN202010711490A CN111807526B CN 111807526 B CN111807526 B CN 111807526B CN 202010711490 A CN202010711490 A CN 202010711490A CN 111807526 B CN111807526 B CN 111807526B
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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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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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
- C02F3/30—Aerobic and anaerobic processes
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention provides a river channel treatment method, which comprises aerobic bacteria adding, facultative bacteria adding and anaerobic bacteria adding; adding aerobic bacteria: activating before adding, adding on the surface of water area, adding 40-50g of aerobic bacteria into each cubic of water; the aerobic bacteria comprise: bacillus subtilis, bacillus licheniformis, bacillus pumilus and trichoderma viride. Adding facultative bacteria: placing the nano aeration biomembrane in a culture solution of facultative bacteria, culturing for 20-26 hours, and then putting into a water body to form a flora wall; installing a bacterial colony wall every 100-200 meters; 30-40g of facultative bacteria are added into each cubic of water. The invention effectively treats the polluted river, reduces COD and ammonia nitrogen in the water body, reduces bottom mud, improves the transparency of the water body and solves the problem of serious water body pollution of the current urban river.
Description
Technical Field
The invention relates to a river channel treatment method, and belongs to the technical field of environmental microorganisms.
Background
The traditional river water body treatment usually adopts a chemical method, the investment is large, and the generated sludge can cause secondary pollution to the environment if the sludge is not properly treated. With the development of society and the enhancement of environmental protection consciousness of people, the traditional activated sludge method is mostly adopted for microbial degradation, and the method has a small application range and great limitations.
Patent CN201910723497.2 discloses a method for microbial remediation applied to river cross section restoration, which comprises the following steps: s1: expanding and culturing the microbial liquid, S2, adsorbing the microorganisms, and S3: internal installation and placement of the adsorption device, S4: spraying of microbial liquid, S5: detection and S6: analyzing and adjusting; the screened complex microbial inoculum (comprising various strains, such as efficient heterotrophic nitrification and aerobic denitrification strains, raoultella, pseudomonas, photosynthetic bacteria, bacillus and the like) is used as a bacterial source, and is sprayed in a river channel provided with an adsorption device after propagation, so that the overproof pollutants in the river water are purified.
The method for treating river pollution by microorganisms in the prior art has the following technical defects: for the seriously polluted river channel, the COD, ammonia nitrogen, bottom mud and water transparency of the water body are difficult to improve in a short time.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a river channel treatment method and achieves the following aims: the microbial method is used for treating the river pollution problem, effectively treating the polluted river, reducing COD (chemical oxygen demand) and ammonia nitrogen in the water body, reducing bottom mud and improving the transparency of the water body, and solving the problem of serious water body pollution of the current urban river.
The technical scheme adopted by the invention is as follows:
the invention provides a river channel treatment method, which comprises the following steps:
1. strain adding device
(1) Aerobic bacteria feeding
Before adding the strains, activating the strains in a plastic barrel by warm water at 25-38 ℃ for 24 hours to activate the strains, and uniformly spraying the activated strains on the surface of a water area to be treated by manual or mechanical equipment after the activation is finished. 40-50g of aerobic bacteria are added into each cubic of water.
The bacteria content of the aerobic bacteria is as follows: 3X 10 9 CFU/g; the aerobic bacteria comprise: the bacillus subtilis, the bacillus licheniformis, the bacillus pumilus and the trichoderma viride have the bacterium content proportion of 20-35:25-40:20-30:15-25.
(2) Facultative addition of facultative aerobe
The facultative bacteria adding mode is complex, and the strain adding mode is to establish a bacterial colony wall; according to the water area condition, a bacterial wall is installed every 100-200 meters, namely a carrier-nano aeration biomembrane is hung on the artificial floating island.
The nano aeration biomembrane is firstly placed in the culture solution of the facultative bacteria for 24 hours, and then is put into the water body. 30-40g of facultative bacteria are added into each cubic of water. The flora wall is placed at a position from 50 cm below the water surface to 50 cm above the water bottom, and the flora wall plays a role in attaching strains and cleaning water.
The facultative bacteria comprise the following bacteria in content: 2X 10 9 CFU/g; the facultative bacteria comprise rhodopseudomonas palustris and saccharomyces cerevisiae, and the bacteria content ratio is 15-25:20-30 parts of;
the nano aeration biomembrane can effectively improve the contact area of water and bubbles, and improve the oxygen mass transfer efficiency of aeration, when sewage flows around the aeration biomembrane, pollutants in the water enter the biomembrane under the actions of concentration driving, microbial adsorption and the like, and are utilized by microbes through biological metabolism and proliferation, so that the pollutants in the water are assimilated into microbial thalli which are fixed on the biomembrane or decomposed into inorganic metabolites, and the purification of the water is realized.
(3) Anaerobic bacteria adding device
Placing the biochemical ball in a culture solution of anaerobic bacteria, and culturing for 24 hours; anaerobic bacteria are attached to the biochemical balls, then the biochemical balls attached with strains are added into a water area needing to be treated, the strains sink to the bottom of a river channel along with a carrier, and the strains are propagated to decompose pollutants. 5-8 biochemical balls are added into each cubic of water.
The biochemical ball is made of plastic, is spherical, has a plurality of bulges on the surface, contains biochemical cotton inside, and can be well attached to the biochemical cotton by anaerobic bacteria.
The content of the anaerobic bacteria is 2 multiplied by 10 9 CFU/g comprises nitrobacteria, nitrosomonas and denitrifying bacteria, and the ratio of bacteria content is 20-25:15-25:20-30.
The facultative bacteria and the anaerobic bacteria can be added simultaneously or sequentially, and the adding is not in sequence.
2. Fast establishment period of flora
After the strains are added into the riverway to be treated, an unstable system consisting of a large number of beneficial floras is formed in the riverway, and the beneficial floras gradually adapt to the riverway system; according to the pollution condition of the river channel, the rapid establishment period of the flora can be completed in 3-10 days generally.
3. Period of stable treatment
After the flora is established, the beneficial bacteria begin to decompose pollutants on the whole longitudinal section of the river channel, and the river channel has fluidity, so that the river channel pollution cannot ensure enough steady-state conditions to maintain the total amount of the added flora, so that the flora has certain loss, and strains are supplemented in time under the conditions to maintain enough flora amount. After stabilization, the river ecological system is gradually established, a dynamic balance is formed, the stabilization period time can be determined by testing the indexes of the water inlet and the water outlet of the river, and the stabilization treatment period can be completed in 1-3 months.
4. Period of maintenance
The maintenance period is entered after the micro-ecological system of the river channel is established stably, in order to maintain the treatment effect of the river channel, the water quality rebound caused by the changes of water quality, water quantity, temperature and the like is avoided, the sampling detection is carried out on the river channel every 1-3 months, and the strains are supplemented in time to maintain the stable total amount of floras.
By adopting the technical scheme, the invention has the following beneficial effects:
the microbial method is used for treating the pollution problem of the river channel, effectively treating the polluted river channel and reducing COD, ammonia nitrogen, bottom mud and water transparency of the water body; before treatment, the COD value of the river is 100mg/L, the ammonia nitrogen content is 54mg/L, the thickness of the sediment is 0.8m, and the transparency is 20cm; after five months of treatment, the COD value of the river channel is 30-32mg/L, the ammonia nitrogen content is 2-2.1mg/L, the thickness of the bottom mud is 0.26-0.28m, and the transparency is 58-60cm.
Detailed Description
Example 1 river treatment method
The method comprises the following steps:
1. strain addition
(1) Aerobic bacteria adding
Before adding the strains, activating the strains for 24 hours in a plastic barrel by warm water at 25 ℃, and after the activation is finished, uniformly spraying the activated strains on the surface of a water area to be treated by manual or mechanical equipment. 50g of aerobic bacteria are added into each cubic of water.
The bacteria content of the aerobic bacteria is as follows: 3 x 10 9 CFU/g; the aerobic bacteria comprise: the bacillus subtilis, the bacillus licheniformis, the bacillus pumilus and the trichoderma viride have the bacterium content proportion of 20:40:25:17.
(2) Facultative addition of facultative aerobe
The facultative bacteria adding mode is complex, and the strain adding mode is to establish a bacterial colony wall; according to the water area condition, a bacterial wall is installed every 100 meters, namely a carrier-nano aeration biomembrane is hung on the artificial floating island.
The nano aeration biomembrane is firstly placed in the culture solution of the facultative bacteria for 24 hours, and then is thrown into the water body. 40g of facultative bacteria are added into each cubic of water. The flora wall is placed at a position from 50 cm below the water surface to 50 cm above the water bottom, and the flora wall plays a role in attaching strains and cleaning water.
The facultative bacteria comprise the following bacteria in content: 2X 10 9 CFU/g; the facultative bacteria comprise rhodopseudomonas palustris and saccharomyces cerevisiae, and the bacteria content ratio is 25:22;
the nano aeration biomembrane can effectively improve the contact area between a water body and bubbles and improve the oxygen mass transfer efficiency of aeration, when sewage flows around the aeration biomembrane, pollutants in the water body enter the biomembrane under the actions of concentration driving, microorganism adsorption and the like, and are utilized by microorganisms through biological metabolism and proliferation, so that the pollutants in the water body are assimilated into microorganism thalli which are fixed on the biomembrane or decomposed into inorganic metabolites, and the purification of the water body is realized.
(3) Anaerobic bacteria adding
Placing the biochemical ball in a culture solution of anaerobic bacteria, and culturing for 24 hours; anaerobic bacteria are attached to the biochemical balls, then the biochemical balls with attached strains are added into a water area needing to be treated, the strains sink to the bottom of a river channel along with a carrier, and the strains are propagated to decompose pollutants. 6 biochemical balls are added into each cubic of water.
The biochemical ball is made of plastic, is spherical, has a plurality of bulges on the surface, contains biochemical cotton inside, and can be well attached to the biochemical cotton by anaerobic bacteria.
The content of the anaerobic bacteria is 2 multiplied by 10 9 CFU/g comprises nitrifying bacteria, nitrosomonas bacteria and denitrifying bacteria, and the ratio of bacteria content is 21: 25:23.
the facultative bacteria and the anaerobic bacteria can be added simultaneously or sequentially, and the adding is not in sequence.
2. Fast establishment period of flora
After the strains are added into the riverway to be treated, an unstable system consisting of a large number of beneficial floras is formed in the riverway, and the beneficial floras gradually adapt to the riverway system; and finishing the rapid establishment period of the flora within 5-8 days according to the pollution condition of the river channel.
3. Period of stable treatment
After the flora is established, the beneficial bacteria begin to decompose pollutants on the whole longitudinal section of the river channel, and the river channel has fluidity, so that the river channel pollution cannot ensure enough steady-state conditions to maintain the total amount of the added flora, so that the flora has certain loss, and strains are supplemented in time under the conditions to maintain enough flora amount. After stabilization, the river channel ecosystem is gradually established, a dynamic balance is formed, the stabilization period time can be determined through testing the indexes of the water inlet and the water outlet of the river channel, and the stabilization period can be completed in 2 months.
3. Period of maintenance
The maintenance period is entered after the micro-ecological system of the river channel is established stably, so that the treatment effect of the river channel is maintained, water quality rebound caused by changes of water quality, water quantity, temperature and the like is avoided, the river channel is sampled and detected once every 2 months, and strains are supplemented in time to maintain the stable total amount of floras.
Example 2 river treatment method
The method comprises the following steps:
1. strain addition
(1) Aerobic bacteria feeding
Before adding the strains, the strains are activated for 24 hours in a plastic barrel by warm water at 35 ℃, and are uniformly sprayed on the surface of a water area to be treated by manual or mechanical equipment after the activation is finished. 45g of aerobic bacteria are added into each cubic of water.
The bacteria content of the aerobic bacteria is as follows: 3X 10 9 CFU/g; the aerobic bacteria comprise: bacillus subtilis, bacillus licheniformis, bacillus pumilus and trichoderma viride, wherein the ratio of the bacteria content is 30:35:26:19.
(2) Facultative addition of facultative aerobe
The facultative bacteria adding mode is complex, and the strain adding mode is to establish a bacterial colony wall; according to the water area condition, a bacterial colony wall is installed every 150 meters, namely a carrier-nano aeration biomembrane is hung on the artificial floating island.
The nano aeration biomembrane is firstly placed in the culture solution of the facultative bacteria for 24 hours, and then is put into the water body. 33g of facultative bacteria are added into each cubic of water. The flora wall is placed at a position from 50 cm below the water surface to 50 cm above the water bottom, and the flora wall plays a role in attaching strains and cleaning water.
The facultative bacteria comprise the following bacteria in content: 2X 10 9 CFU/g; the facultative bacteria comprise rhodopseudomonas palustris and saccharomyces cerevisiae, and the bacteria content ratio is 15:23;
the nano aeration biomembrane can effectively improve the contact area of water and bubbles, and improve the oxygen mass transfer efficiency of aeration, when sewage flows around the aeration biomembrane, pollutants in the water enter the biomembrane under the actions of concentration driving, microbial adsorption and the like, and are utilized by microbes through biological metabolism and proliferation, so that the pollutants in the water are assimilated into microbial thalli which are fixed on the biomembrane or decomposed into inorganic metabolites, and the purification of the water is realized.
(3) Anaerobic bacteria adding
Placing the biochemical ball in a culture solution of anaerobic bacteria, and culturing for 24 hours; anaerobic bacteria are attached to the biochemical balls, then the biochemical balls with attached strains are added into a water area needing to be treated, the strains sink to the bottom of a river channel along with a carrier, and the strains are propagated to decompose pollutants. 5 biochemical balls are added into each cubic meter of water.
The biochemical ball is made of plastic, is spherical, has a plurality of bulges on the surface, contains biochemical cotton inside, and can be well attached to the biochemical cotton by anaerobic bacteria.
The content of the anaerobic bacteria is 2 multiplied by 10 9 CFU/g, including nitrobacteria, nitrosomonas, denitrifying bacteria, the bacteria content ratio is 25:15:27.
the facultative bacteria and the anaerobic bacteria can be added simultaneously or sequentially, and the adding is not in sequence.
2. Fast establishment period of flora
After the strains are added into the riverway to be treated, an unstable system consisting of a large number of beneficial floras is formed in the riverway, and the beneficial floras gradually adapt to the riverway system; according to the river pollution condition, completing the rapid establishment period of flora in 7-10 days.
3. Period of stable treatment
After the flora is established, the beneficial bacteria begin to decompose pollutants on the whole longitudinal section of the river channel, and the river channel has fluidity, so that the river channel pollution cannot ensure enough steady-state conditions to maintain the total amount of the added flora, so that the flora has certain loss, and strains are supplemented in time under the conditions to maintain enough flora amount. Through stabilizing treatment, a river channel ecological system is gradually established, a dynamic balance is formed, the stabilizing period time can be determined through testing the indexes of the water inlet and the water outlet of the river channel, and the stabilizing treatment period can be completed in 3 months.
3. Period of maintenance
The maintenance period is entered after the micro-ecological system of the river channel is established stably, so that the treatment effect of the river channel is maintained, water quality rebound caused by changes of water quality, water quantity, temperature and the like is avoided, the river channel is sampled and detected once every 1 month, and strains are supplemented in time to maintain the stable total amount of floras.
The river channel treatment method of example 1-2 is adopted to treat a polluted river channel, and after detection and five-month treatment, the change of river channel detection indexes is shown in table 1;
TABLE 1
The transparency is the visible depth of river water.
As can be seen from Table 1, the COD value of the river channel before treatment is 100mg/L, the ammonia nitrogen content is 54mg/L, the thickness of the sediment is 0.8m, and the transparency is 20cm; after five months of treatment, the COD value of the river channel is 30-32mg/L, the ammonia nitrogen content is 2-2.1mg/L, the thickness of the bottom mud is 0.26-0.28m, and the transparency is 58-60cm.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (1)
1. A river regulation method is characterized by comprising the following steps:
1) Strain addition
a. Aerobic bacteria feeding
Activating the strain in a plastic barrel with warm water at 25 ℃ for 24 hours before adding the strain, and uniformly spraying the activated strain on the surface of a water area to be treated by manual or mechanical equipment after the activation is finished; adding 50g of aerobic bacteria into each cubic volume of water;
the bacteria content of the aerobic bacteria is as follows: 3X 10 9 CFU/g; the aerobic bacteria comprise: bacillus subtilis, bacillus licheniformis and short sproutSpore bacillus and green trichoderma, wherein the ratio of the spore content to the green trichoderma is 20:40:25:17;
b. facultative addition of facultative aerobe
The strain adding mode is to establish a flora wall; according to the water area condition, installing a bacterial colony wall every 100 meters, namely hanging a carrier, namely a nano aeration biomembrane on the artificial floating island; firstly, placing the nano aeration biomembrane in a culture solution of facultative bacteria, culturing for 24 hours, and then putting into a water body; adding 40g of facultative bacteria into each cubic of water; the flora wall is arranged from 50 cm below the water surface to 50 cm above the water bottom;
the facultative bacteria comprise the following bacteria in content: 2 x 10 9 CFU/g; the facultative bacteria comprise rhodopseudomonas palustris and saccharomyces cerevisiae, and the ratio of the bacteria content is 25:22;
c. anaerobic bacteria adding
Placing the biochemical ball in a culture solution of anaerobic bacteria, and culturing for 24 hours; anaerobic bacteria are attached to the biochemical balls, then the biochemical balls attached with the strains are added into a water area needing to be treated, the strains sink to the bottom of a river channel along with a carrier, and the strains are propagated to decompose pollutants; adding 6 biochemical balls into each cubic of water;
the content of the anaerobic bacteria is 2 multiplied by 10 9 CFU/g comprises nitrifying bacteria, nitrosomonas bacteria and denitrifying bacteria, and the ratio of bacteria content is 21: 25:23;
2) Fast establishment period of flora
After the strains are added into the river channel to be treated, an unstable system consisting of a large number of beneficial floras is formed in the river channel, and the beneficial floras gradually adapt to the river channel system; completing a flora rapid establishment period within 5-8 days according to the river pollution condition;
3) Period of stable treatment
After the flora is established, the beneficial bacteria begin to decompose pollutants on the whole longitudinal section of the river channel, and the river channel has fluidity, so that the river channel pollution cannot ensure enough steady-state conditions to maintain the total amount of the added flora, so that the flora has certain loss, and strains are supplemented in time under the conditions to maintain enough flora amount; after stabilization treatment, a river channel ecological system is gradually established, a dynamic balance is formed, the stabilization period time can be determined by testing the indexes of the water inlet and the water outlet of the river channel, and the stabilization treatment period can be completed within 2 months;
4) Period of maintenance
The maintenance period is entered after the micro-ecological system of the river channel is established stably, so that the treatment effect of the river channel is maintained, water quality rebound caused by water quality, water quantity and temperature change is avoided, the river channel is sampled and detected once every 2 months, and strains are supplemented in time to maintain the stable total amount of floras.
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