CN111056635B - Waste paper scrap denitrification carbon source filler block and preparation method and application thereof - Google Patents
Waste paper scrap denitrification carbon source filler block and preparation method and application thereof Download PDFInfo
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- CN111056635B CN111056635B CN202010067367.0A CN202010067367A CN111056635B CN 111056635 B CN111056635 B CN 111056635B CN 202010067367 A CN202010067367 A CN 202010067367A CN 111056635 B CN111056635 B CN 111056635B
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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
- C02F3/2806—Anaerobic processes using solid supports for 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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- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
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- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a preparation method of a carbon source filler block for waste paper scrap denitrification, which comprises the following steps: preparing and sterilizing a cellulose acid-producing flora culture medium; putting the cellulose acid-producing bacteria group culture medium into an anaerobic tank, adding wet rotten wood and rotten leaf powder, uniformly mixing, adjusting the pH to 6.5-7.0, stirring at 35 ℃ and the rotating speed of 120 revolutions per minute, and continuously culturing for 3 days to prepare flora suspension; adding 500g of wastepaper scraps into the flora suspension, stirring for 7 days at a speed of 20 revolutions per minute, standing for 3 hours, removing supernatant, filtering out excessive water to obtain a solid material, and placing the solid material in a rectangular mold to prepare a wastepaper scrap denitrification carbon source filler block, wherein the wastepaper scrap denitrification carbon source filler block has the advantages of low cost, excellent denitrification performance and the like.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a paper scrap denitrification carbon source filler block and a preparation method and application thereof.
Background
According to data of a national town sewage treatment information system of the Ministry of construction, the low carbon-nitrogen (C/N) ratio of the sewage is a common problem of the urban sewage treatment plants in China, the C/N value of the sewage in most towns is only 3-4, and the carbon-nitrogen ratio is seriously insufficient. The biological nitrogen and phosphorus removal efficiency is generally low, and the external carbon source is one of the main measures for upgrading the standards and improving the biological nitrogen removal of a sewage plant. The cost of the sewage plant on the carbon source accounts for more than 50 percent of the daily operation and management cost, even can reach 70 percent, and the demand of the additional carbon source is huge. When biological treatment is carried out, the conventional use of methanol, sodium acetate and the like and the addition of easily degradable liquid organic carbon sources has the advantages of easy reduction, high reaction speed and the like, but the defects are obvious, the corresponding duration is short, frequent supplement is needed, the cost is high, and the long-term treatment of polluted water bodies is not facilitated. In addition, the liquid-phase organic carbon which is not completely reacted can cause secondary pollution of water, so that the search for a high-efficiency, stable and low-cost carbon source becomes an important task of a plurality of sewage treatment plants.
The solid slow-release carbon source prepared from natural cellulose such as straw, cork, wheat straw and the like has the advantages that the solid slow-release carbon source can be used as a carrier of a biological membrane, the reducing power can be provided for the biological nitrogen and phosphorus removal process, the system is easy to regulate and control, the risk that the effluent quality is influenced because the carbon source is easily excessively added in the traditional process is avoided, and the stable operation of a water treatment system is facilitated. The cellulose substance has loose structure and large specific surface area, is favorable for microorganism attachment, can obviously improve the removal efficiency of nitrate nitrogen in sewage by taking the cellulose substance as an external carbon source, and has the advantages of wide source, convenient material acquisition and low cost in terms of the material.
The waste paper scraps are used as common garbage in life, are rich in cellulose, can be used as a denitrification carbon source and a carrier for bacterial growth, are easy for bacterial growth and attachment, and are beneficial to enhancing the performance of cellulose degrading bacteria for degrading cellulose in newspaper.
Disclosure of Invention
The invention aims to provide a carbon source filler block for waste paper scrap denitrification, which solves the problems of waste paper scrap recovery and sewage treatment.
In order to achieve the purpose, the invention adopts the technical scheme that:
a preparation method of a carbon source filler block for waste paper scrap denitrification comprises the following steps:
(1) Preparing and sterilizing a cellulose acid-producing flora culture medium: weighing 20g of crude paper pulp, 5g of feed protein powder and 5g of industrial crude salt, and adding 22g of ZnSO 4 ·7H 2 O、5gMnCl 2 ·4H 2 O、5g FeSO 4 ·7H 2 O、1.6g CoCl 2 ·6H 2 O、1.6gCuSO 4 ·5H 2 O、7.5gNa 2 MoO 4 ·7H 2 O and 50g of EDTA, then adding distilled water to make up 1L of the volume, uniformly mixing, heating at 121 ℃ for 20 minutes to sterilize to prepare a culture medium, and cooling to 35 ℃;
(2) Putting the cellulose acid-producing bacteria group culture medium into an anaerobic tank, adding 5g of wet rotten wood and rotten leaf powder, uniformly mixing, adjusting the pH to 6.5-7.0, stirring at the temperature of 35 ℃ and the rotating speed of 120 r/min, and adding NaHCO every 12 hours 3 Adjusting pH to 6.5-7.0, and continuously culturing for 3 days to obtain flora suspension;
(3) Adding 500g of wastepaper scraps into the flora suspension, stirring for 7 days at a speed of 20 revolutions per minute, standing for 3 hours, removing supernatant, filling the rest materials into a plastic hemp bag, filtering out excessive water to obtain solid materials, and putting the solid materials into a rectangular mold to prepare a wastepaper scrap denitrification carbon source filler block.
Further, in the step (3), the size of the waste paper scrap is 2-3cm multiplied by 2-3cm.
The invention also provides a carbon source filler block for waste paper scrap denitrification, which is prepared by the preparation method of any one of the technical schemes.
The invention also provides an application method of the paper scrap denitrification carbon source filler block, one end of the paper scrap denitrification carbon source filler block is tied by a rope and is sunk into a denitrification tank, and 1/30-60 of the paper scrap denitrification carbon source filler block can be replaced every day according to requirements, so that the aim of continuously and stably supplementing a denitrification carbon source is fulfilled.
The waste paper scraps contain some cellulose, hemicellulose and lignin, so that the waste paper scraps have rich carbon sources and are excellent culture media for attachment growth of cellulose acid-producing flora. The waste paper scraps are utilized to prepare the denitrification carbon source, so that the concept of circular economy is met, the waste is recycled, and the problem of environmental pollution is solved. The invention prepares the waste paper scraps into the filler attached with cellulose acid-producing flora and used for denitrifying sustained-release carbon source. The carbon source filler block for waste paper scrap denitrification prepared by the invention has the advantages of low cost, excellent denitrification performance and the like.
Detailed Description
The following describes embodiments of the present invention in further detail through a description of examples. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a preparation method of a carbon source filler block for waste paper scrap denitrification, which comprises the following steps:
(1) Preparing and sterilizing a cellulose acid-producing flora culture medium: weighing 20g of coarse paper pulp,5g of feed protein powder, 5g of industrial crude salt and 22g of ZnSO 4 ·7H 2 O、5gMnCl 2 ·4H 2 O、5g FeSO 4 ·7H 2 O、1.6g CoCl 2 ·6H 2 O、1.6gCuSO 4 ·5H 2 O、7.5gNa 2 MoO 4 ·7H 2 O and 50g of EDTA, then adding distilled water to make up 1L of the volume, uniformly mixing, heating at 121 ℃ for 20 minutes to sterilize to prepare a culture medium, and cooling to 35 ℃;
(2) Putting the cellulose acid-producing bacteria group culture medium into an anaerobic tank, adding 5g of wet rotten wood and rotten leaf powder, uniformly mixing, adjusting the pH to 6.5-7.0, stirring at the temperature of 35 ℃ and the rotating speed of 120 r/min, and adding NaHCO every 12 hours 3 Adjusting pH to 6.5-7.0, and continuously culturing for 3 days to obtain flora suspension;
(3) Adding 500g of waste paper scraps of 2-3cm multiplied by 2-3cm into the flora suspension, stirring for 7 days at 20 r/min, standing for 3 hours, removing the supernatant, filling the rest materials into a plastic jute bag, filtering to remove excessive water to obtain a solid material, and putting the solid material into a rectangular mold to prepare a waste paper scrap denitrification carbon source filler block.
One end of the paper scrap denitrification carbon source filler block is tied by a rope and is sunk into a denitrification tank, and 1/30-60 of the paper scrap denitrification carbon source filler block can be replaced every day as required, so that the aim of continuously and stably supplementing a denitrification carbon source is fulfilled.
The above description is only exemplary of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A preparation method of a carbon source filler block for waste paper scrap denitrification is characterized by comprising the following steps:
(1) Preparing and sterilizing a cellulose acid-producing flora culture medium: weighing 20g of crude paper pulp, 5g of feed protein powder and 5g of industrial crude salt, and adding 22g of ZnSO 4 ·7H 2 O、5gMnCl 2 ·4H 2 O、5gFeSO 4 ·7H 2 O、1.6g CoCl 2 ·6H 2 O、1.6gCuSO 4 ·5H 2 O、7.5gNa 2 MoO 4 ·7H 2 O and 50g of EDTA, then adding distilled water to make up 1L of the volume, uniformly mixing, heating at 121 ℃ for 20 minutes to sterilize to prepare a culture medium, and cooling to 35 ℃;
(2) Putting the cellulose acid-producing bacteria group culture medium into an anaerobic tank, adding 5g of wet rotten wood and rotten leaf powder, uniformly mixing, adjusting the pH to 6.5-7.0, stirring at the temperature of 35 ℃ and the rotating speed of 120 r/min, and adding NaHCO every 12 hours 3 Adjusting pH to 6.5-7.0, and continuously culturing for 3 days to obtain flora suspension;
(3) Adding 500g of wastepaper scraps into the flora suspension, stirring for 7 days at a speed of 20 revolutions per minute, standing for 3 hours, removing supernatant, filling the rest materials into a plastic hemp bag, filtering out excessive water to obtain solid materials, and putting the solid materials into a rectangular mold to prepare a wastepaper scrap denitrification carbon source filler block.
2. The method for preparing the carbon source filler block for the denitrification of the wastepaper as claimed in claim 1, wherein in the step (3), the wastepaper has a size of 2-3cm x 2-3cm.
3. A filler block of carbon source for paper scrap denitrification, which is prepared by the method for preparing the filler block of carbon source for paper scrap denitrification according to any one of claims 1 to 2.
4. The application of the filler block of the carbon source for the denitrification of the wastepaper is characterized in that the filler block of the carbon source for the denitrification of the wastepaper is prepared by the preparation method of the filler block of the carbon source for the denitrification of the wastepaper as claimed in any one of claims 1 to 2, one end of the filler block of the carbon source for the denitrification of the wastepaper is tied by a rope and is sunk into a denitrification tank, and 1/30-60 of the filler block of the carbon source for the denitrification of the wastepaper can be replaced every day as required, so that the aim of continuously and stably supplementing the carbon source for the denitrification of the wastepaper is fulfilled.
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| CN202010067367.0A CN111056635B (en) | 2020-01-20 | 2020-01-20 | Waste paper scrap denitrification carbon source filler block and preparation method and application thereof |
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| CN202010067367.0A CN111056635B (en) | 2020-01-20 | 2020-01-20 | Waste paper scrap denitrification carbon source filler block and preparation method and application thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130233792A1 (en) * | 2012-03-11 | 2013-09-12 | Walter Lawrence Brown, III | Method for treating wastewater with lignocelluosic particulate |
| CN105347625A (en) * | 2015-11-20 | 2016-02-24 | 中国地质大学（北京） | Method for removing nitrate in underground water and reactor |
| CN107434302A (en) * | 2017-09-06 | 2017-12-05 | 合肥工业大学 | A kind of method for strengthening artificial swamp Nitrogen removal effect |
| CN110157619A (en) * | 2018-01-30 | 2019-08-23 | 吉林农业大学 | A kind of cellulose decomposition microbial inoculum application and preparation method |
| CN110540306A (en) * | 2019-09-02 | 2019-12-06 | 安徽舜禹水务股份有限公司 | Preparation method of straw corncob sewage denitrification carbon source |
-
2020
- 2020-01-20 CN CN202010067367.0A patent/CN111056635B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130233792A1 (en) * | 2012-03-11 | 2013-09-12 | Walter Lawrence Brown, III | Method for treating wastewater with lignocelluosic particulate |
| CN105347625A (en) * | 2015-11-20 | 2016-02-24 | 中国地质大学（北京） | Method for removing nitrate in underground water and reactor |
| CN107434302A (en) * | 2017-09-06 | 2017-12-05 | 合肥工业大学 | A kind of method for strengthening artificial swamp Nitrogen removal effect |
| CN110157619A (en) * | 2018-01-30 | 2019-08-23 | 吉林农业大学 | A kind of cellulose decomposition microbial inoculum application and preparation method |
| CN110540306A (en) * | 2019-09-02 | 2019-12-06 | 安徽舜禹水务股份有限公司 | Preparation method of straw corncob sewage denitrification carbon source |
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| CN111056635A (en) | 2020-04-24 |
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