CN113173638B - Method for promoting denitrogenation effect - Google Patents
Method for promoting denitrogenation effect Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 230000000694 effects Effects 0.000 title claims abstract description 22
- 230000001737 promoting effect Effects 0.000 title claims abstract description 13
- 239000010865 sewage Substances 0.000 claims abstract description 96
- 230000004913 activation Effects 0.000 claims abstract description 76
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 65
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 45
- 230000003203 everyday effect Effects 0.000 claims abstract description 29
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 22
- 230000002354 daily effect Effects 0.000 claims description 34
- 239000007864 aqueous solution Substances 0.000 claims description 28
- 239000002994 raw material Substances 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 238000005273 aeration Methods 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 239000004480 active ingredient Substances 0.000 claims description 5
- 238000005189 flocculation Methods 0.000 claims description 3
- 230000016615 flocculation Effects 0.000 claims description 3
- 238000004062 sedimentation Methods 0.000 claims description 3
- 235000009051 Ambrosia paniculata var. peruviana Nutrition 0.000 claims 1
- 235000003097 Artemisia absinthium Nutrition 0.000 claims 1
- 240000001851 Artemisia dracunculus Species 0.000 claims 1
- 235000017731 Artemisia dracunculus ssp. dracunculus Nutrition 0.000 claims 1
- 235000003261 Artemisia vulgaris Nutrition 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 11
- 241000894006 Bacteria Species 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 7
- 239000010802 sludge Substances 0.000 abstract description 5
- 230000035764 nutrition Effects 0.000 abstract description 4
- 235000016709 nutrition Nutrition 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 abstract description 3
- 229920000642 polymer Polymers 0.000 abstract description 2
- 239000002086 nanomaterial Substances 0.000 abstract 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 6
- 239000003814 drug Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 241000124033 Salix Species 0.000 description 4
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- 238000002474 experimental method Methods 0.000 description 4
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- 244000005700 microbiome Species 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
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- 102000004190 Enzymes Human genes 0.000 description 1
- 101000899339 Homo sapiens Lymphoid-specific helicase Proteins 0.000 description 1
- 102100022539 Lymphoid-specific helicase Human genes 0.000 description 1
- 241000646858 Salix arbusculoides Species 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000005515 coenzyme Substances 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
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- 235000013619 trace mineral Nutrition 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion 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
- 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
-
- 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
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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
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Chemical & Material Sciences (AREA)
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a method for promoting a nitrogen removal effect of sewage treatment, which relates to the technical field of sewage treatment, and comprises a denitrification starting step and a stable operation step, wherein the denitrification starting step comprises the following steps: the method comprises the following steps that a plurality of ecological activation bags are hung at the front end, the middle end and the tail end of a biochemical pool respectively and are immersed in the biochemical pool, a plurality of biological floccule net bags are hung at the front end and the tail end of the biochemical pool respectively and are immersed in the biochemical pool, the number proportion of the biological floccule net bags arranged at the front end and the tail end of the biochemical pool is 1, water is added into the biochemical pool every day, the depth of the ecological activation bags immersed in the biochemical pool is more than 40cm, and in the denitrification starting step and the stable operation step, the mesh bags of the biological floccule net bags are 60-100 meshes. The invention utilizes the new polymer nano material to fuse with the new technology of the microecological nutrition scientific mechanism, improves the total quantity of beneficial bacteria in the sewage, excites the activity of the beneficial bacteria, and can greatly improve the biochemical effect without changing the original process and increasing the activated sludge.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a method for promoting a nitrogen removal effect of sewage treatment.
Background
The sewage treatment refers to a process of purifying sewage to meet the water quality requirement of discharging the sewage into a certain water body or reusing the sewage, the sewage treatment is widely applied to various fields of buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, the sewage treatment also increasingly enters the daily life of common people, the recycling and standard discharge of the sewage are directly related to the life and death of each enterprise, and the operation and standard discharge of the sewage treatment are particularly important.
Total Nitrogen (TN) in sewage treatment is the most troublesome index at present, the total nitrogen must reach the discharge standard, the existing method for improving the index of total nitrogen treatment mainly improves and optimizes the process and equipment, a large amount of manpower and material resources are consumed, and the economic benefit is reduced by equipment improvement.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method for promoting the nitrogen removal effect of sewage treatment, which utilizes a new polymer nano new material and a new microecological nutrition scientific mechanism technology to improve the total amount of beneficial bacteria in sewage and stimulate the activity of the beneficial bacteria, and can greatly improve the biochemical effect without changing the original process and increasing the activated sludge.
The invention is realized by the following technical scheme: a method for promoting the denitrogenation effect of sewage treatment comprises a denitrification starting step and a stable operation step, wherein the denitrification starting step comprises the following steps:
a1: on the 1 st-7 th day of sewage treatment, respectively hanging a plurality of ecological activation bags at the front end, the middle end and the tail end of a biochemical tank and immersing the ecological activation bags in the biochemical tank, wherein the number proportion of the ecological activation bags at the front end, the middle end and the tail end of the biochemical tank is 4: 4*10 5 Adding 10 x 10 mass percent of the active ingredients into the biochemical pond every day -4 -14*10 -4 The water mordant aqueous solution has a mass ratio of the addition amount of the water mordant to the daily sewage treatment amount of 1-1.5:1*10 5 ；
A2, on the 8 th day to the 14 th day of sewage treatment, hanging a plurality of ecological activation bags at the front end, the middle end and the tail end of a biochemical pool respectively and immersing the bags into the biochemical pool, wherein the number ratio of the ecological activation bags at the front end, the middle end and the tail end of the biochemical pool is 4: 4*10 5 Adding 6-8 x 10 mass percent of the active carbon into the biochemical pool every day -4 The water mordant aqueous solution has a mass ratio of the addition amount of the water mordant to the daily sewage treatment amount of 2.5-3:4*10 5 ；
A3, hanging a plurality of ecological activation bags at the front end, the middle end and the tail end of a biochemical pool and immersing the ecological activation bags into the biochemical pool on 15-21 days of sewage treatment, wherein the number ratio of the ecological activation bags at the front end, the middle end and the tail end of the biochemical pool is 4The mass ratio of the flocs to the daily sewage treatment capacity is 12-13:4*10 5 Adding 2 x 10 mass percent of the biochemical pool every day -4 -4*10 -4 The water mordant aqueous solution has a mass ratio of the addition amount of the water mordant to the daily sewage treatment amount of 1-1.5:4*10 5 ；
The step of stably operating includes: after 21 days of sewage treatment, hanging and immersing a plurality of ecological activation bags at the front end, the middle end and the tail end of a biochemical tank respectively, wherein the number ratio of the ecological activation bags at the front end, the middle end and the tail end of the biochemical tank is 3:4*10 5 Adding 1 × 10 mass percent of the raw materials into a biochemical pool every day -4 -2*10 -4 The water mordant aqueous solution has a mass ratio of the addition amount of the water mordant to the daily sewage treatment amount of 1-2:4*10 8 。
Further, the method comprises a denitrification starting step and a stable operation step, wherein the denitrification starting step comprises the following steps:
a1: on the 1 st-7 th day of sewage treatment, respectively hanging a plurality of ecological activation bags at the front end, the middle end and the tail end of a biochemical tank and immersing the ecological activation bags in the biochemical tank, wherein the number proportion of the ecological activation bags at the front end, the middle end and the tail end of the biochemical tank is 4: 4*10 5 Adding 12 x 10 mass percent of the active ingredients into the biochemical pond every day -4 The water mordant aqueous solution has a mass ratio of the addition amount of the water mordant to the daily sewage treatment amount of 1.2:1*10 5 ；
A2, hanging a plurality of ecological activation bags at the front end, the middle end and the tail end of a biochemical pool respectively and immersing the bags into the biochemical pool after the sewage treatment days 8-14The ecological activation bag number proportion that pond front end, middle-end, end set up is 4: 4*10 5 Adding 7 x 10 mass percent of the raw materials into a biochemical pool every day -4 The water mordant aqueous solution has a mass ratio of the addition amount of the water mordant to the daily sewage treatment amount of 2.8:4*10 5 ；
A3, on 15-21 days of sewage treatment, hanging and immersing a plurality of ecological activation bags at the front end, the middle end and the tail end of a biochemical pool respectively, wherein the number ratio of the ecological activation bags at the front end, the middle end and the tail end of the biochemical pool is 4: 4*10 5 Adding 3 × 10 mass percent of the raw materials into a biochemical pool every day -4 The water mordant aqueous solution has a mass ratio of the addition amount of the water mordant to the daily sewage treatment amount of 1.2:4*10 5 ；
The step of stably operating includes: after 21 days of sewage treatment, hanging and immersing a plurality of ecological activation bags at the front end, the middle end and the tail end of a biochemical tank respectively, wherein the number ratio of the ecological activation bags at the front end, the middle end and the tail end of the biochemical tank is 3:4*10 5 Adding 1.5 to 10 mass percent of the biochemical pool every day -4 The water morrhizine aqueous solution has a mass ratio of the addition amount of the water morrhizine to the daily sewage treatment amount of 1.5:4*10 8 。
Further, in the denitrification starting step and the stable operation step, the total number of the ecological activation bags arranged in the biochemical pool is 6 and 5 respectively, and the total number of the biological floccule net bags arranged in the biochemical pool is 2.
Further, in the denitrification starting step and the stable operation step, the depth of the ecological activation bag immersed in the biochemical pool is more than 40cm.
Further, in the denitrification starting step and the stable operation step, the mesh bag of the biological wadding group mesh bag is 60-100 meshes.
Further, in the denitrification starting step and the stable operation step, the biochemical tank is an anaerobic tank, an anoxic tank, an aeration tank and/or a flocculation sedimentation tank.
The ecological activation bag is made of novel materials such as a nano-scale high-molecular porous structure, a porous superfine material made of microbial coenzyme and the like, and expands living activity space for denitrifying bacteria; the biological floc is used for supplementing core substances such as enzyme and the like to the biochemical system and activating the microbial system, and is used for culturing the sludge in the biochemical tank and improving the activity of the sludge; the Shuichun is developed according to microbial nutrition, contains various trace elements and nutrient substances required by the proliferation of targeted microorganisms, can be kept activated for a long time, stabilizes the microorganisms, particularly bacilli, quickly forms a large amount of microbial flocs, and continuously degrades ammonia nitrogen and total nitrogen.
Compared with the prior art, the invention has the following advantages and beneficial effects: according to the invention, the ecological activation bag, the water Mo Chong and the biological floccules are matched for use, the sewage is treated by adopting a new process method, the high-molecular nano new material is used for being fused with a new microecological nutrition scientific mechanism technology, the total quantity of beneficial bacteria in the sewage is increased, the activity of the beneficial bacteria is excited, the biochemical effect can be greatly improved under the conditions that the original process is not changed and the activated sludge is not increased, and particularly, the advantages of high efficiency and low cost are realized in the aspect of treating total nitrogen.
Detailed Description
The present invention will be further described with reference to the following examples. The following examples are only a few specific examples of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by the design concept should fall within the scope of infringing on the protection scope of the present invention.
Examples
In one embodiment, a method for promoting nitrogen removal effect of sewage treatment comprises a denitrification starting step and a stable operation step, wherein the denitrification starting step comprises the following steps:
a1: on the 1 st-7 th day of sewage treatment, respectively hanging a plurality of ecological activation bags at the front end, the middle end and the tail end of a biochemical tank and immersing the ecological activation bags in the biochemical tank, wherein the number proportion of the ecological activation bags at the front end, the middle end and the tail end of the biochemical tank is 4: 4*10 5 Adding 10 × 10 mass percent of the raw materials into a biochemical pool every day -4 -14*10 -4 The mass ratio of the addition amount of the water mozzanine to the daily sewage treatment amount of the water mozzanine aqueous solution is 1-1.5:1*10 5 ；
A2, on the 8 th day to the 14 th day of sewage treatment, hanging a plurality of ecological activation bags at the front end, the middle end and the tail end of a biochemical pool respectively and immersing the bags into the biochemical pool, wherein the number ratio of the ecological activation bags at the front end, the middle end and the tail end of the biochemical pool is 4: 4*10 5 Adding 6-8 x 10 mass percent of the raw materials into a biochemical pool every day -4 The water mordant aqueous solution has a mass ratio of the addition amount of the water mordant to the daily sewage treatment amount of 2.5-3:4*10 5 ；
A3, hanging a plurality of ecological activation bags at the front end, the middle end and the tail end of a biochemical pool and immersing the bags into the biochemical pool on 15-21 days of sewage treatment, wherein the number ratio of the ecological activation bags at the front end, the middle end and the tail end of the biochemical pool is 4In the biochemical tank, the number ratio of biological floccule mesh bags arranged at the front end and the tail end of the biochemical tank is 1: 4*10 5 Adding 2 x 10 mass percent of the active ingredients into the biochemical pond every day -4 -4*10 -4 The water mordant aqueous solution has a mass ratio of the addition amount of the water mordant to the daily sewage treatment amount of 1-1.5:4*10 5 ；
The step of stable operation comprises: after 21 days of sewage treatment, hanging and immersing a plurality of ecological activation bags at the front end, the middle end and the tail end of a biochemical tank respectively, wherein the number ratio of the ecological activation bags at the front end, the middle end and the tail end of the biochemical tank is 3:4*10 5 Adding 1 x 10 mass percent of the active carbon into the biochemical pool every day -4 -2*10 -4 The water mordant aqueous solution has a mass ratio of the addition amount of the water mordant to the daily sewage treatment amount of 1-2:4*10 8 。
In one embodiment, the method comprises a denitrification starting step and a stable operation step, wherein the denitrification starting step comprises the following steps:
a1: on the 1 st-7 th day of sewage treatment, respectively hanging and immersing a plurality of ecological activation bags at the front end, the middle end and the tail end of a biochemical pond, wherein the number ratio of the ecological activation bags at the front end, the middle end and the tail end of the biochemical pond is 4: 4*10 5 Adding 12 x 10 mass percent of the raw materials into a biochemical pool every day -4 The water morrhizine aqueous solution has a mass ratio of the addition amount of the water morrhizine to the daily sewage treatment amount of 1.2:1*10 5 ；
A2, on the 8 th day to the 14 th day of sewage treatment, hanging a plurality of ecological activation bags at the front end, the middle end and the tail end of a biochemical pool respectively and immersing the bags into the biochemical pool, wherein the number ratio of the ecological activation bags at the front end, the middle end and the tail end of the biochemical pool is 4: 4*10 5 Adding 7 x 10 mass percent of the raw materials into a biochemical pool every day -4 The water mordant aqueous solution has a mass ratio of the addition amount of the water mordant to the daily sewage treatment amount of 2.8:4*10 5 ；
A3, on 15-21 days of sewage treatment, hanging and immersing a plurality of ecological activation bags at the front end, the middle end and the tail end of a biochemical pool respectively, wherein the number ratio of the ecological activation bags at the front end, the middle end and the tail end of the biochemical pool is 4: 4*10 5 Adding 3 × 10 mass percent of the raw materials into a biochemical pool every day -4 The water mordant aqueous solution has a mass ratio of the addition amount of the water mordant to the daily sewage treatment amount of 1.2:4*10 5 ；
The step of stably operating includes: after the 21 st day of sewage treatment, hang a plurality of ecological activation bag respectively in biochemical pond front end, middle-end, end and dip in the biochemical pond, the number proportion of the ecological activation bag of biochemical pond front end, middle-end, end setting is 3:4*10 5 Adding 1.5 x 10 mass percent of the active carbon into the biochemical pond every day -4 The aqueous solution of (1), the aqueous solution ofThe mass ratio of the addition amount to the daily sewage treatment amount is 1.5:4*10 8 。
In one embodiment, in the denitrification starting step and the stable operation step, the total number of the ecological activation bags arranged in the biochemical tank is 6 and 5 respectively, and the total number of the biological floc net bags arranged in the biochemical tank is 2.
In one embodiment, in the denitrification starting step and the stable operation step, the depth of the ecological activation bag immersed in the biochemical pond is more than 40cm.
In one embodiment, the mesh bag of the biological wadding mesh bag is 60-100 meshes in the denitrification starting step and the stable operation step.
In one embodiment, in the denitrification start-up step and the stable operation step, the biochemical tank is an anaerobic tank, an anoxic tank, an aeration tank and/or a flocculation sedimentation tank.
Examples of the experiments
Subjects: the test site is carried out in a willow sewage treatment station of ritong country moisturizing and draining limited company and is located in the bealock town in ritong county.
Experimental groups: a control group and a drug group were set. The contrast group is the original sewage treatment process of the willow branch sewage treatment station, the original treatment process adopts the PASG process, and the designed treatment capacity is 900m 3 (ii)/d, the current actual daily throughput is about 400 tons/day; the medicament group is the sewage treatment process adopted by the invention.
The control group selects the sewage treatment indexes of the medicament group for three months before the experiment, as shown in table 1, and the data condition analysis finds that the total nitrogen removal standard reaching problem mainly needs to be solved by the willow sewage treatment station.
TABLE 1
Experiment: the drug group is tested according to the method of the invention, and the specific method is as follows: the method comprises a denitrification starting step and a stable operation step, wherein the denitrification starting step comprises the following steps:
a1: sewage treatment 1 st-7 days, hang a plurality of ecological activation bag respectively and dip in biochemical pond front end, middle-end, the number proportion of the ecological activation bag of biochemical pond front end, middle-end, end setting is 4: 4*10 5 Adding 12 x 10 mass percent of the active ingredients into the biochemical pond every day -4 The water mordant aqueous solution has a mass ratio of the addition amount of the water mordant to the daily sewage treatment amount of 1.2:1*10 5 ；
A2, on the 8 th day to the 14 th day of sewage treatment, hanging a plurality of ecological activation bags at the front end, the middle end and the tail end of a biochemical pool respectively and immersing the bags into the biochemical pool, wherein the number ratio of the ecological activation bags at the front end, the middle end and the tail end of the biochemical pool is 4: 4*10 5 Adding 7 x 10 mass percent of the raw materials into a biochemical pool every day -4 The water morrhizine aqueous solution has a mass ratio of the addition amount of the water morrhizine to the daily sewage treatment amount of 2.8:4*10 5 ；
A3, on 15-21 days of sewage treatment, hanging and immersing a plurality of ecological activation bags at the front end, the middle end and the tail end of a biochemical pool respectively, wherein the number ratio of the ecological activation bags at the front end, the middle end and the tail end of the biochemical pool is 4: 4*10 5 Adding 3 × 10 mass percent of the raw materials into a biochemical pool every day -4 The water mordant aqueous solution has a mass ratio of the addition amount of the water mordant to the daily sewage treatment amount of 1.2:4*10 5 ；
The step of stably operating includes: after 21 days of sewage treatment, hanging and immersing a plurality of ecological activation bags at the front end, the middle end and the tail end of a biochemical tank respectively, wherein the number ratio of the ecological activation bags at the front end, the middle end and the tail end of the biochemical tank is 3:4*10 5 Adding 1.5 to 10 mass percent of the biochemical pool every day -4 The water morrhizine aqueous solution has a mass ratio of the addition amount of the water morrhizine to the daily sewage treatment amount of 1.5:4*10 8 。
More specifically, in the denitrification starting step and the stable operation step, the total number of the ecological activation bags arranged in the biochemical tank is 6 and 5 respectively, and the total number of the biological floc net bags arranged in the biochemical tank is 2 respectively.
More specifically, in the denitrification starting step and the stable operation step, the depth of the ecological activation bag immersed in the biochemical pond is 45cm.
More specifically, in the denitrification starting step and the stable operation step, the mesh bag of the biological floccule mesh bag is 80 meshes.
More specifically, in the denitrification starting step and the stable operation step, the biochemical tank is an anaerobic tank.
More specifically, the ecological activation bag, the biological floc and the water morbidi are selected from existing brands in the market, the experimental water morbidi is selected from a water morbidi No. 2 product of Duffy biotechnology Limited, the ecological activation bag is selected from a water Taiqing product of Duffy biotechnology Limited, and the biological floc is selected from a biological floc product of Duffy biotechnology Limited. The invention is not limited to the above-mentioned products, but other products of the same kind are equally suitable for use in the method according to the invention.
More specifically, the branch sewage treatment station selected in the experiment is located in the towlock of sudok in ritsu county, and the actual daily treatment capacity is about 400 tons/day at present. The daily sewage treatment capacity of the method is 400 tons/day, and the addition amount of other agents is added according to the standard.
Starting in the month of 2020 and 4, the sewage treatment station of the willow branches carries out sewage treatment according to the treatment method disclosed by the invention, and water quality data and process parameters after dosing are obtained, as shown in the table 2.
TABLE 2
And (4) conclusion: as known from Table 1, the main problem to be solved by the willow branch sewage treatment station is that the total nitrogen removal reaches the standard. As is apparent from table 2, (1) ammonia nitrogen: the ammonia nitrogen in the effluent is continuously and stably discharged up to the standard and far lower than the designed discharge standard from 4 months to 17 days to 5 months to 8 days; the continuous stable standard reaching time exceeds 10 days. (2) total nitrogen: the total nitrogen of the effluent fluctuates up and down in the designed discharge standard before 4 months and 15 days, the fluctuation range is small, and the effluent can not continuously and stably reach the standard; on one hand, the ratio of the COD of the inlet water to the total nitrogen is lower, and the carbon source is insufficient; secondly, the denitrifying microorganisms do not form stable population and stable state. But the total nitrogen can continuously and stably reach the standard from 4-month 21 to 5-month 8; the continuous stable standard reaching time exceeds 10 days. (3) From 1 day in 5 months to 8 days in 5 months, the addition amount of water is adjusted to 1.2 kg per day; the ammonia nitrogen and total nitrogen effluent conditions still stably reach the standard. In the later period, water is fed into the kettle according to 1.5 g/day, and the kettle can still reach the standard stably; by reducing the dosage of the medicament, the aim of reaching the standards of ammonia nitrogen and total nitrogen can be achieved at lower cost, and the cost control is facilitated. (4) The aeration time is gradually reduced from 6 hours in each initial round to 4 hours in each round after 5 months and 1 day, and the standard can be stably reached; by reducing the aeration time, on one hand, the cost of electricity charge can be reduced, and on the other hand, the daily treatment capacity can be increased by reducing the aeration time; the method is also favorable for cost control, and reduces or even saves the investment cost.
The sewage treatment method adopted by the invention increases the medicament cost, can be earned back by reducing the aeration time and saving the electricity charge, even the comprehensive cost is not increased, obtains good sewage effect and achieves the purpose of reaching the standards of ammonia nitrogen and total nitrogen.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A method for promoting the denitrogenation effect of sewage treatment is characterized by comprising a denitrification starting step and a stable operation step, wherein the denitrification starting step comprises the following steps:
a1: on the 1 st-7 th day of sewage treatment, respectively hanging a plurality of ecological activation bags at the front end, the middle end and the tail end of a biochemical tank and immersing the ecological activation bags in the biochemical tank, wherein the number proportion of the ecological activation bags at the front end, the middle end and the tail end of the biochemical tank is 4: 4*10 5 Adding 10 × 10 mass percent of the raw materials into a biochemical pool every day -4 -14*10 -4 The water mordant aqueous solution has a mass ratio of the addition amount of the water mordant to the daily sewage treatment amount of 1-1.5:1*10 5 ；
A2, on the 8 th day to the 14 th day of sewage treatment, hanging a plurality of ecological activation bags at the front end, the middle end and the tail end of a biochemical pool respectively and immersing the bags into the biochemical pool, wherein the number ratio of the ecological activation bags at the front end, the middle end and the tail end of the biochemical pool is 4: 4*10 5 Adding 6-8 x 10 mass percent of the active carbon into the biochemical pool every day -4 Water ofThe quality ratio of the addition amount of the wormwoods to the daily sewage treatment amount is 2.5-3:4*10 5 ；
A3, on 15-21 days of sewage treatment, hanging a plurality of ecological activation bags at the front end, the middle end and the tail end of a biochemical pool respectively and immersing the ecological activation bags into the biochemical pool, wherein the number ratio of the ecological activation bags at the front end, the middle end and the tail end of the biochemical pool is 4: 4*10 5 Adding 2 x 10 mass percent of the biochemical pool every day -4 -4*10 -4 The water mordant aqueous solution has a mass ratio of the addition amount of the water mordant to the daily sewage treatment amount of 1-1.5:4*10 5 ；
The step of stably operating includes: after 21 days of sewage treatment, hanging and immersing a plurality of ecological activation bags at the front end, the middle end and the tail end of a biochemical tank respectively, wherein the number ratio of the ecological activation bags at the front end, the middle end and the tail end of the biochemical tank is 3:4*10 5 Adding 1 x 10 mass percent of the active carbon into the biochemical pool every day -4 -2*10 -4 The water mordant aqueous solution has a mass ratio of the addition amount of the water mordant to the daily sewage treatment amount of 1-2:4*10 8 。
2. The method for promoting nitrogen removal effect of sewage treatment according to claim 1, comprising a denitrification start-up step and a steady operation step, wherein said denitrification start-up step comprises the steps of:
a1: on 1-7 days of sewage treatment, respectively hanging several ecological activation bags at front end, middle end and tail end of biochemical pool, and immersing them in the biochemical poolThe number ratio of the ecological activation bags arranged at the tail end is 4: 4*10 5 Adding 12 x 10 mass percent of the active ingredients into the biochemical pond every day -4 The water mordant aqueous solution has a mass ratio of the addition amount of the water mordant to the daily sewage treatment amount of 1.2:1*10 5 ；
A2, on the 8 th day to the 14 th day of sewage treatment, respectively hanging a plurality of ecological activation bags at the front end, the middle end and the tail end of a biochemical tank and immersing the bags into the biochemical tank, wherein the number ratio of the ecological activation bags arranged at the front end, the middle end and the tail end of the biochemical tank is 4: 4*10 5 Adding 7 x 10 mass percent of the raw materials into a biochemical pool every day -4 The water mordant aqueous solution has a mass ratio of the addition amount of the water mordant to the daily sewage treatment amount of 2.8:4*10 5 ；
A3, on 15-21 days of sewage treatment, hanging and immersing a plurality of ecological activation bags at the front end, the middle end and the tail end of a biochemical pool respectively, wherein the number ratio of the ecological activation bags at the front end, the middle end and the tail end of the biochemical pool is 4: 4*10 5 Adding 3 × 10 mass percent of the raw materials into a biochemical pool every day -4 The water morrhizine aqueous solution has a mass ratio of the addition amount of the water morrhizine to the daily sewage treatment amount of 1.2:4*10 5 ；
The step of stably operating includes: after the 21 st day of sewage treatment, the front end, the middle end and the tail end of the biochemical pool are respectivelyHang a plurality of ecological activation bag respectively and dip in biochemical pond, the number proportion of the ecological activation bag of biochemical pond front end, middle-end, terminal setting is 3:4*10 5 Adding 1.5 x 10 mass percent of the active carbon into the biochemical pond every day -4 The water mordant aqueous solution has a mass ratio of the addition amount of the water mordant to the daily sewage treatment amount of 1.5:4*10 8 。
3. The method for promoting nitrogen removal effect of sewage treatment according to claim 1 or 2, wherein in the denitrification start-up step and the steady operation step, the total number of the ecological activation bags arranged in the biochemical pond is 6 and 5 respectively, and the total number of the biological floc net bags arranged in the biochemical pond is 2 respectively.
4. The method for promoting nitrogen removal effect of sewage treatment according to claim 1 or 2, wherein in the denitrification start-up step and the steady operation step, the depth of the ecological activation bag immersed in the biochemical pond is more than 40cm.
5. The method for promoting nitrogen removal effect of sewage treatment according to claim 1 or 2, wherein the mesh bag of the biological floc mesh bag is 60-100 mesh in the denitrification start-up step and the stable operation step.
6. The method for promoting the nitrogen removal effect of sewage treatment according to claim 1 or 2, wherein in the denitrification starting step and the stable operation step, the biochemical tank is an anaerobic tank, an anoxic tank, an aeration tank and/or a flocculation sedimentation tank.
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