CN111170455A - Low-concentration domestic sewage treatment equipment and sewage treatment method - Google Patents
Low-concentration domestic sewage treatment equipment and sewage treatment method Download PDFInfo
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- CN111170455A CN111170455A CN201911405188.7A CN201911405188A CN111170455A CN 111170455 A CN111170455 A CN 111170455A CN 201911405188 A CN201911405188 A CN 201911405188A CN 111170455 A CN111170455 A CN 111170455A
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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
- C02F3/302—Nitrification and denitrification treatment
- C02F3/305—Nitrification and denitrification treatment characterised by the denitrification
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/10—Temperature conditions for biological treatment
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- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses low-concentration domestic sewage treatment equipment and a sewage treatment method, and the low-concentration domestic sewage treatment equipment comprises an aerobic system and an anaerobic system, wherein the aerobic system comprises a base and a fixed seat, the top of the base is fixedly connected with an aerobic tank, a circulating water inlet pipe is communicated with the upper part of the left side of the aerobic tank, and the right end of the circulating water inlet pipe penetrates through the aerobic tank and extends to the interior of the aerobic tank. According to the low-concentration domestic sewage treatment equipment and the sewage treatment method, the anaerobic tank is changed into the anaerobic pipeline by meeting the requirement of a denitrification process, aerobic water is conveyed into the anaerobic pipeline to enter anaerobically and then enters the aerobic tank to carry out denitrification reaction, the content of ammonia nitrogen is further reduced, the process reduces the civil construction cost of the anaerobic tank of a biochemical system, the occupied area of the anaerobic tank is reduced, the investment is reduced on the basis of meeting the requirement of biochemical ammonia nitrogen removal, the construction period is shortened, and the construction of a sewage treatment station in a narrow space is facilitated.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to low-concentration domestic sewage treatment equipment and a sewage treatment method.
Background
The sewage treatment is a process for purifying sewage to meet the water quality requirement of discharging the sewage into a certain water body or reusing the sewage. Sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and is increasingly used in daily life of common people. The topics about water pollution are continuously raised, particularly the problem of underground water pollution, farmers or enterprises in Hangzhou and Wenzhou Zhejiang pay for the environmental protection captivity to go to the river and swim, so that attention to the serious degree of water pollution is brought to people.
Most of systems of marsh gas generated by treating most of high-concentration sewage anaerobic systems can be burnt and converted into harmless gas to be directly discharged through a marsh gas burning tower, a large amount of heat can be irradiated to flow away, unnecessary loss is irradiated, steam or other pyrogen for heat supply can be provided for high-temperature and medium-temperature anaerobism in winter to achieve efficient treatment of the anaerobic systems, the increase of operation cost in winter is irradiated, the operation cost is increased, the normal operation of the systems is not facilitated, and the denitrification process is required to be completed for treating ammonia nitrogen, and civil engineering land occupation requirements of a nitrification tank and a denitrification tank cannot be met in places with more tense land occupation.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides low-concentration domestic sewage treatment equipment and a sewage treatment method, and solves the problems that biogas generated by most of high-concentration sewage anaerobic system treatment is converted into harmless gas through incineration in an incineration tower and is directly discharged, a large amount of heat is lost, and the civil construction floor space requirements of a nitrification tank and a denitrification tank cannot be met in places with tight floor space.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a low-concentration domestic sewage treatment device comprises an aerobic system and an anaerobic system, wherein the aerobic system comprises a base and a fixed seat, the top of the base is fixedly connected with an aerobic tank, the left upper part of the aerobic tank is communicated with a circulating water inlet pipe, the right end of the circulating water inlet pipe penetrates through the aerobic tank and extends to the inside of the aerobic tank, the top of the fixed seat is fixedly connected with a pipeline circulating pump, the water inlet of the pipeline circulating pump is communicated with an anaerobic pipeline, one end of the anaerobic pipeline is communicated with the water outlet of the pipeline circulating pump, the left end of the circulating water inlet pipe is communicated with the right side of the outer surface of the anaerobic pipeline, the left lower part of the aerobic tank is communicated with a circulating water outlet pipe, the right end of the circulating water outlet pipe penetrates through the aerobic tank and extends to the inside of the aerobic tank, one end of the circulating water outlet pipe is communicated with, and a circulating water outlet valve is arranged on the surface of the circulating water outlet pipe, and a tank cover is arranged at the top of the aerobic tank.
Preferably, the anaerobic system comprises an anaerobic pipeline system, a biogas collecting device, a biogas collecting fan, a biogas burning device and a hot water circulating pump.
Preferably, the top of the anaerobic pipeline system is communicated with the bottom of the biogas collecting device, and the output end of the biogas collecting device is communicated with the input end of the biogas collecting fan through a first gas pipe.
Preferably, the output end of the biogas collecting fan is communicated with the input end of the biogas incineration device through a second gas pipe.
Preferably, the output end of the biogas incineration device is communicated with the input end of the hot water circulating pump through a third air pipe.
Preferably, the output end of the hot water circulating pump is communicated with the input end of the anaerobic pipeline system through a hot water anaerobic internal circulating pipe.
Preferably, one end of the hot water anaerobic internal circulation pipe penetrates through the anaerobic pipeline system and extends to the outside of the anaerobic pipeline system, and one end of the hot water anaerobic internal circulation pipe is communicated with the input end of the biogas incineration device.
The invention also discloses a low-concentration domestic sewage treatment method, which specifically comprises the following steps:
s1, starting a pipeline circulating pump, and simultaneously opening a circulating water inlet valve on a circulating water inlet pipe and a circulating water outlet valve on a circulating water outlet pipe, wherein water in the aerobic tank is input into the anaerobic pipeline through the circulating water inlet pipe for anaerobic treatment;
s2, circulating through the anaerobic pipeline, inputting into the aerobic tank through the circulating water outlet pipe, and performing denitrification reaction on the sewage in the anaerobic pipeline to reduce the content of ammonia nitrogen in the sewage;
s3, when biogas is generated in the anaerobic pipeline system, the biogas is collected by the biogas collection device and is conveyed to the biogas collection fan through the first gas pipe, and then the biogas collection fan is conveyed to the biogas incineration device for incineration, so that chemical energy is converted into heat energy;
s4, conveying the heated hot water into an anaerobic pipeline system through a hot water circulating pump, heating the temperature in the anaerobic pipeline system, and returning the cooled water into the biogas incineration device for heating through a hot water anaerobic internal circulating pipe for recycling.
(III) advantageous effects
The invention provides low-concentration domestic sewage treatment equipment and a sewage treatment method. Compared with the prior art, the method has the following beneficial effects:
(1) the aerobic system comprises a base and a fixed seat, the top of the base is fixedly connected with an aerobic tank, the upper part of the left side of the aerobic tank is communicated with a circulating water inlet pipe, the right end of the circulating water inlet pipe penetrates through the aerobic tank and extends to the inside of the aerobic tank, the top of the fixed seat is fixedly connected with a pipeline circulating pump, the water inlet of the pipeline circulating pump is communicated with an anaerobic pipeline, one end of the anaerobic pipeline is communicated with the water outlet of the pipeline circulating pump, the left end of the circulating water inlet pipe is communicated with the right side of the outer surface of the anaerobic pipeline, the lower part of the left side of the aerobic tank is communicated with a circulating water outlet pipe, the right end of the circulating water outlet pipe penetrates through the aerobic tank and extends to the inside of the aerobic tank, one end of the circulating water outlet pipe is communicated with the top of the outer surface of the anaerobic, the top of the aerobic tank is provided with a tank cover, S1, firstly, a pipeline circulating pump is started, and simultaneously a circulating water inlet valve on a circulating water inlet pipe and a circulating water outlet valve on a circulating water outlet pipe are opened, at the moment, water in the aerobic tank is input into an anaerobic pipeline through the circulating water inlet pipe for anaerobic treatment; s2, after the sewage is circulated through the anaerobic pipeline, the sewage is input into the aerobic tank through the circulating water outlet pipe, the sewage in the anaerobic pipeline is subjected to denitrification reaction to reduce the content of ammonia nitrogen in the sewage, the anaerobic tank is changed into the anaerobic pipeline by meeting the requirement of denitrification process, the aerobic water is conveyed into the anaerobic pipeline to enter anaerobically, and then the aerobic tank is subjected to denitrification reaction to further reduce the content of ammonia nitrogen.
(2) The low-concentration domestic sewage treatment equipment and the sewage treatment method are characterized in that the top of an anaerobic pipeline system is communicated with the bottom of a biogas collecting device, the output end of the biogas collecting device is communicated with the input end of a biogas collecting fan through a first gas pipe, the output end of the biogas collecting fan is communicated with the input end of a biogas burning device through a second gas pipe, the output end of the biogas burning device is communicated with the input end of a hot water circulating pump through a third gas pipe, the output end of the hot water circulating pump is communicated with the input end of the anaerobic pipeline system through a hot water anaerobic inner circulating pipe, one end of the hot water anaerobic inner circulating pipe penetrates through the anaerobic pipeline system and extends to the outside of the anaerobic pipeline system, one end of the hot water anaerobic inner circulating pipe is communicated with the input end of the biogas burning device, S3, when biogas is generated in the anaerobic, the biogas is conveyed into a biogas collecting fan through a first gas pipe, and then the biogas collecting fan is conveyed into a biogas incineration device for incineration so as to convert chemical energy into heat energy; s4, conveying the heated hot water to an anaerobic pipeline system through a hot water circulating pump to heat the temperature in the anaerobic pipeline system, returning the cooled water to a biogas incineration device through a hot water anaerobic internal circulating pipe to heat for recycling, and fully utilizing biogas generated by sewage treatment anaerobically.
Drawings
FIG. 1 is a process flow diagram of an aerobic system according to the present invention;
FIG. 2 is a process flow diagram of an anaerobic system of the present invention.
In the figure, 1-an aerobic system, 101-a base, 102-a fixed base, 103-an aerobic tank, 104-a circulating water inlet pipe, 105-a pipeline circulating pump, 106-an anaerobic pipeline, 107-a circulating water outlet pipe, 108-a circulating water inlet valve, 109-a circulating water outlet valve, 110-a tank cover, 2-an anaerobic system, 201-an anaerobic pipeline system, 202-a biogas collecting device, 203-a biogas collecting fan, 204-a biogas burning device, 205-a hot water circulating pump, 206-a first gas pipe, 207-a second gas pipe, 208-a third gas pipe and 209-a hot water anaerobic internal circulating pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1-2, an embodiment of the present invention provides a technical solution: a low concentration domestic sewage treatment device comprises an aerobic system 1 and an anaerobic system 2, wherein the anaerobic system 2 comprises an anaerobic pipeline system 201, a biogas collecting device 202, a biogas collecting fan 203, a biogas burning device 204 and a hot water circulating pump 205, the output end of the hot water circulating pump 205 is communicated with the input end of the anaerobic pipeline system 201 through a hot water anaerobic inner circulating pipe 209, one end of the hot water anaerobic inner circulating pipe 209 penetrates through the anaerobic pipeline system 201 and extends to the outside of the anaerobic pipeline system 201, one end of the hot water anaerobic inner circulating pipe 209 is communicated with the input end of the biogas burning device 204, the output end of the biogas burning device 204 is communicated with the input end of the hot water circulating pump 205 through a third air pipe 208, the output end of the biogas collecting fan 203 is communicated with the input end of the biogas burning device 204 through a second air pipe 207, the top of the anaerobic pipeline system 201 is communicated with the, the output end of the biogas collecting device 202 is communicated with the input end of a biogas collecting fan 203 through a first gas pipe 206, the aerobic system 1 comprises a base 101 and a fixed seat 102, the top of the base 101 is fixedly connected with an aerobic tank 103, the upper part of the left side of the aerobic tank 103 is communicated with a circulating water inlet pipe 104, the right end of the circulating water inlet pipe 104 penetrates through the aerobic tank 103 and extends to the inside of the aerobic tank 103, the top of the fixed seat 102 is fixedly connected with a pipeline circulating pump 105, the water inlet of the pipeline circulating pump 105 is communicated with an anaerobic pipeline 106, one end of the anaerobic pipeline 106 is communicated with the water outlet of the pipeline circulating pump 105, the left end of the circulating water inlet pipe 104 is communicated with the right side of the outer surface of the anaerobic pipeline 106, the lower part of the left side of the aerobic tank 103 is communicated with a circulating water outlet pipe 107, the right end of the circulating water outlet, a circulating water inlet valve 108 is arranged on the surface of the circulating water inlet pipe 104, a circulating water outlet valve 109 is arranged on the surface of the circulating water outlet pipe 107, a tank cover 110 is arranged on the top of the aerobic tank 103, and the details which are not described in detail in the specification belong to the prior art which is well known to the person skilled in the art.
The invention also discloses a low-concentration domestic sewage treatment method, which specifically comprises the following steps:
s1, firstly, starting the pipeline circulating pump 106, and simultaneously opening a circulating water inlet valve 108 on the circulating water inlet pipe 104 and a circulating water outlet valve 109 on the circulating water outlet pipe 107, wherein water in the aerobic tank 103 is input into the anaerobic pipeline 106 through the circulating water inlet pipe 104 for anaerobic treatment;
s2, circulating through the anaerobic pipeline 106, inputting into the aerobic tank 103 through the circulating water outlet pipe 107, and performing denitrification reaction on the sewage in the anaerobic pipeline 106 to reduce the content of ammonia nitrogen in the sewage;
s3, when biogas is generated in the anaerobic pipeline system 201, the biogas is collected by the biogas collection device 202 and is conveyed into the biogas collection fan 203 through the first gas pipe 206, and then the biogas collection fan 203 is conveyed into the biogas incineration device 204 for incineration, so that chemical energy is converted into heat energy;
s4, conveying the heated hot water into the anaerobic pipeline system 201 through the hot water circulating pump 205 to heat the temperature in the anaerobic pipeline system 201, and returning the cooled water after heat dissipation to the biogas incineration device 204 through the hot water anaerobic internal circulating pipe 209 for heating and recycling.
In conclusion, the anaerobic tank is changed into the anaerobic pipeline 106 by meeting the requirement of the denitrification process, the aerobic water is conveyed into the anaerobic pipeline 106 to enter the anaerobic tank and then enters the aerobic tank 103 to carry out denitrification reaction, the ammonia nitrogen content is further reduced, the process reduces the civil construction cost of the anaerobic tank of the biochemical system, reduces the occupied area of the anaerobic tank, reduces the investment on the basis of meeting the requirement of biochemical ammonia nitrogen removal, shortens the construction period, and is beneficial to the construction of a sewage treatment station in a narrow space; the system can fully utilize the marsh gas generated by sewage treatment anaerobism, utilize the marsh gas to burn to generate heat to heat the conveying conductor, and then convey the heat to the hot water anaerobic inner circulating pipe 209 in the anaerobic pipeline system 201 by the hot water circulating pump 205, provide the heat required by microorganism in the anaerobism, improve the treatment efficiency of the anaerobic system, reduce the operating cost of sewage treatment plants in winter, and utilize by-products in the sewage treatment process to improve the sewage treatment efficiency.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A low concentration domestic sewage treatment equipment, includes aerobic system (1) and anaerobic system (2), its characterized in that: the aerobic system (1) comprises a base (101) and a fixed seat (102), the top of the base (101) is fixedly connected with an aerobic pool (103), the left upper side of the aerobic pool (103) is communicated with a circulating water inlet pipe (104), the right end of the circulating water inlet pipe (104) penetrates through the aerobic pool (103) and extends to the interior of the aerobic pool (103), the top of the fixed seat (102) is fixedly connected with a pipeline circulating pump (105), a water inlet of the pipeline circulating pump (105) is communicated with an anaerobic pipeline (106), one end of the anaerobic pipeline (106) is communicated with a water outlet of the pipeline circulating pump (105), the left end of the circulating water inlet pipe (104) is communicated with the right side of the outer surface of the anaerobic pipeline (106), the left lower side of the aerobic pool (103) is communicated with a circulating water outlet pipe (107), and the right end of the circulating water outlet pipe (107) penetrates through the aerobic pool (103) and extends to the interior of, one end of the circulating water outlet pipe (107) is communicated with the top of the outer surface of the anaerobic pipeline (106), a circulating water inlet valve (108) is installed on the surface of the circulating water inlet pipe (104), a circulating water outlet valve (109) is installed on the surface of the circulating water outlet pipe (107), and a tank cover (110) is installed on the top of the aerobic tank (103).
2. The apparatus for treating low concentration domestic sewage according to claim 1, wherein: the anaerobic system (2) comprises an anaerobic pipeline system (201), a biogas collecting device (202), a biogas collecting fan (203), a biogas burning device (204) and a hot water circulating pump (205).
3. The apparatus for treating low concentration domestic sewage according to claim 2, wherein: the top of the anaerobic pipeline system (201) is communicated with the bottom of the biogas collection device (202), and the output end of the biogas collection device (202) is communicated with the input end of a biogas collection fan (203) through a first gas pipe (206).
4. The apparatus for treating low concentration domestic sewage according to claim 2, wherein: the output end of the biogas collecting fan (203) is communicated with the input end of the biogas incineration device (204) through a second gas pipe (207).
5. The apparatus for treating low concentration domestic sewage according to claim 2, wherein: the output end of the methane burning device (204) is communicated with the input end of a hot water circulating pump (205) through a third air pipe (208).
6. The apparatus for treating low concentration domestic sewage according to claim 2, wherein: the output end of the hot water circulating pump (205) is communicated with the input end of the anaerobic pipeline system (201) through a hot water anaerobic internal circulating pipe (209).
7. The apparatus for treating low concentration domestic sewage according to claim 6, wherein: one end of the hot water anaerobic internal circulation pipe (209) penetrates through the anaerobic pipeline system (201) and extends to the outside of the anaerobic pipeline system (201), and one end of the hot water anaerobic internal circulation pipe (209) is communicated with the input end of the biogas incineration device (204).
8. A low-concentration domestic sewage treatment method is characterized in that: the method specifically comprises the following steps:
s1, firstly, starting a pipeline circulating pump (106), and simultaneously opening a circulating water inlet valve (108) on a circulating water inlet pipe (104) and a circulating water outlet valve (109) on a circulating water outlet pipe (107), wherein water in the aerobic tank (103) is input into the anaerobic pipeline (106) through the circulating water inlet pipe (104) for anaerobic treatment;
s2, circulating through an anaerobic pipeline (106), inputting into an aerobic tank (103) through a circulating water outlet pipe (107), and performing denitrification reaction on the sewage in the anaerobic pipeline (106) to reduce the content of ammonia nitrogen in the sewage;
s3, when biogas is generated in the anaerobic pipeline system (201), the biogas is collected by the biogas collection device (202), is conveyed into the biogas collection fan (203) through the first gas pipe (206), and then is conveyed into the biogas incineration device (204) by the biogas collection fan (203) for incineration, so that chemical energy is converted into heat energy;
s4, conveying the heated hot water into the anaerobic pipeline system (201) through the hot water circulating pump (205), heating the temperature in the anaerobic pipeline system (201), and returning the cooled water after heat dissipation to the biogas incineration device (204) through the hot water anaerobic internal circulating pipe (209) for heating and recycling.
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| CN201911405188.7A CN111170455A (en) | 2019-12-31 | 2019-12-31 | Low-concentration domestic sewage treatment equipment and sewage treatment method |
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| CN201911405188.7A CN111170455A (en) | 2019-12-31 | 2019-12-31 | Low-concentration domestic sewage treatment equipment and sewage treatment method |
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| CN105130107A (en) * | 2015-08-19 | 2015-12-09 | 浙江天晟环保科技有限公司 | Rural domestic wastewater processing system and processing method |
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| CN107758858A (en) * | 2016-08-22 | 2018-03-06 | 湖北宜昌翔陵纸制品有限公司 | A kind of anaerobic tower circulating constant-temperature control device |
| CN108163977A (en) * | 2018-02-07 | 2018-06-15 | 成都天航智虹知识产权运营管理有限公司 | A kind of efficient acidizing hydrolyzation tank and its processing method |
| CN108726676A (en) * | 2017-04-21 | 2018-11-02 | 湖南山河美生物环保科技股份有限公司 | One-stop AO degradations high-concentration sewage resource utilization system |
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2019
- 2019-12-31 CN CN201911405188.7A patent/CN111170455A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105130107A (en) * | 2015-08-19 | 2015-12-09 | 浙江天晟环保科技有限公司 | Rural domestic wastewater processing system and processing method |
| CN107758858A (en) * | 2016-08-22 | 2018-03-06 | 湖北宜昌翔陵纸制品有限公司 | A kind of anaerobic tower circulating constant-temperature control device |
| CN206705911U (en) * | 2017-04-18 | 2017-12-05 | 郑辉 | A kind of zero-discharge treatment system of garbage-compressing liquid |
| CN108726676A (en) * | 2017-04-21 | 2018-11-02 | 湖南山河美生物环保科技股份有限公司 | One-stop AO degradations high-concentration sewage resource utilization system |
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Application publication date: 20200519 |