CN114230008B - Self-heating sewage treatment system - Google Patents
Self-heating sewage treatment system Download PDFInfo
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- CN114230008B CN114230008B CN202111547363.3A CN202111547363A CN114230008B CN 114230008 B CN114230008 B CN 114230008B CN 202111547363 A CN202111547363 A CN 202111547363A CN 114230008 B CN114230008 B CN 114230008B
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- 239000010865 sewage Substances 0.000 title claims abstract description 21
- 238000010438 heat treatment Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 194
- 238000004140 cleaning Methods 0.000 claims abstract description 46
- 239000012528 membrane Substances 0.000 claims abstract description 42
- 238000001035 drying Methods 0.000 claims abstract description 22
- 239000010802 sludge Substances 0.000 claims abstract description 21
- 238000010992 reflux Methods 0.000 claims description 7
- 238000011010 flushing procedure Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 239000008236 heating water Substances 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000005273 aeration Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000149 chemical water pollutant Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
-
- 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
- C02F2301/04—Flow arrangements
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a self-heating sewage treatment system, which comprises an AO unit, a hot water tank, a membrane cleaning unit, a sludge drying unit, an anaerobic unit and one or more of a first heat exchange unit, a second heat exchange unit, a third heat exchange unit and a fourth heat exchange unit; the first heat exchange unit is positioned between the AO unit and the hot water tank and is used for exchanging heat generated by the AO unit into the hot water tank; the second heat exchange unit is positioned between the hot water tank and the membrane cleaning unit and is used for exchanging heat in the hot water tank to the membrane cleaning unit; the third heat exchange unit is positioned between the hot water tank and the sludge drying unit and is used for exchanging heat in the hot water tank to the sludge drying unit; the fourth heat exchange unit is positioned between the hot water tank and the anaerobic unit and is used for exchanging heat in the hot water tank to the anaerobic unit. The invention can realize comprehensive utilization of heat energy and reduce the whole energy consumption of the system.
Description
Technical Field
The invention mainly relates to the technical field of sewage treatment, in particular to a self-heating sewage treatment system.
Background
The domestic garbage leachate system mainly adopts anaerobic treatment, two-stage AO (anaerobic aerobic treatment), ultrafiltration and advanced membrane treatment, wherein the two-stage AO is used as a main pollutant removal stage, and organic matters and ammonia nitrogen in water are removed mainly by aeration and biodegradation. Because of the actions of biological reaction, aeration and mechanical friction of pumps, a large amount of heat energy is generated at the stage, and in order to ensure the suitability of the temperature of a biochemical system, a semi-open cooling system is generally adopted to cool the biochemical tank, so that higher electricity consumption and energy waste are generated. In the system, heat energy is required to be provided for water evaporation in the deep sludge dewatering section; the heat energy is provided at the membrane cleaning part to raise the temperature of the cleaning liquid to 38-40 ℃, and the reactor is heated irregularly in winter during anaerobic treatment.
Therefore, the heat management still adopts a dispersion treatment mode at present, namely the cooling part is still mainly a cooling tower, the heat-needed part is supplemented by adopting an electric or steam mode, and the heat energy in the system is not recycled, so that higher electricity consumption and energy waste are generated.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the problems existing in the prior art, the invention provides a self-heating sewage treatment system which realizes comprehensive utilization of heat energy and reduces the energy consumption of the whole system.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
the self-heating sewage treatment system comprises an AO unit, a hot water tank, a membrane cleaning unit, a sludge drying unit and an anaerobic unit, and is characterized by further comprising one or more of a first heat exchange unit, a second heat exchange unit, a third heat exchange unit and a fourth heat exchange unit; the first heat exchange unit is positioned between the AO unit and the hot water tank and is used for exchanging heat generated by the AO unit into the hot water tank; the second heat exchange unit is positioned between the hot water tank and the membrane cleaning unit and is used for exchanging heat in the hot water tank to the membrane cleaning unit; the third heat exchange unit is positioned between the hot water tank and the sludge drying unit and is used for exchanging heat in the hot water tank to the sludge drying unit; the fourth heat exchange unit is positioned between the hot water tank and the anaerobic unit and is used for exchanging heat of the hot water tank to the anaerobic unit.
Preferably, the first heat exchange unit comprises a heat exchanger A, a heat exchanger B, a jet pump, a heat pump compressor 1#, a throttle expansion valve and a circulating water pump 1#; the hot side inlet of the heat exchanger A is connected with the AO unit through a jet pump, and the hot side outlet is connected with the AO unit; the hot side inlet of the heat exchanger B is connected with the outlet of the heat pump compressor 1#, the hot side outlet is connected with the cold side inlet of the heat exchanger A through the throttle expansion valve 1#, the cold side inlet of the heat exchanger B is connected with the circulating water pump 1#, and the cold side outlet is connected with the reflux port 1# of the hot water tank.
Preferably, the heat exchanger A and the heat exchanger B are plate heat exchangers or tube heat exchangers.
Preferably, the second heat exchange unit comprises a circulating water pump 2#, an inlet of the circulating water pump 2# is connected with a water outlet of the membrane cleaning unit, an outlet of the circulating water pump 2# is connected with a reflux port 2# of the hot water tank, and a water outlet of the hot water tank is connected with a water inlet of the membrane cleaning unit.
Preferably, the membrane cleaning unit comprises a membrane cleaning water tank and a plurality of membrane unit cleaning water tanks, wherein the hot water tank is connected with the membrane cleaning water tank, and the membrane cleaning water tanks are respectively connected with the membrane unit cleaning water tanks.
Preferably, the third heat exchange unit comprises a circulating preheater and a circulating water pump 5#, and the water outlet of the hot water tank is connected with a reflux port 4# of the hot water tank sequentially through the circulating preheater and the circulating water pump 5#.
Preferably, the sludge drying unit comprises a low-temperature dryer, a condenser and a circulating air pipe, wherein the circulating air pipe is connected with the circulating preheater after sequentially passing through the circulating preheater, the low-temperature dryer and the condenser.
Preferably, a fifth heat exchange unit is further provided between the freezer and the user's hot water tank for exchanging heat of the condensing unit to the user's hot water tank.
Preferably, the fifth heat exchange unit comprises a heat exchanger C, a heat exchanger D, a heat pump compressor 2# and a throttle expansion valve 2# which are sequentially connected in series to form a loop, and a loop is formed between the heat exchanger D and a user hot water tank.
Preferably, the fourth heat exchange unit comprises a circulating water pump 3#, a muddy water heat exchanger and a circulating water pump 4#, wherein the hot side of the muddy water heat exchanger is connected with the hot water tank through the circulating water pump 3#, and the cold side of the muddy water heat exchanger is connected with the anaerobic unit through the circulating water pump 4#.
Compared with the prior art, the invention has the advantages that:
according to the sewage treatment system, the heat pump technology is utilized to realize the recovery and comprehensive utilization of the two-stage AO heat production, the original scattered heat supply and heat dissipation are integrated into an organic supply-demand relationship, the heat supply of the heat-required end of a factory is realized, the problem that the water temperature of the membrane cleaning water is too low (mainly in low-temperature seasons) when most of the membrane cleaning CIP devices do not have an automatic heating function is solved, and the dried waste heat can be recovered for the second time and heated for the second time. The invention uses the thought of the low temperature heat pump device and the centralized collection and the decentralized utilization of the heat energy to realize the energy transfer of the heat dissipation end of the system to the heat demand end of the system, and can reduce the whole energy consumption of the system.
Drawings
Fig. 1 is a schematic view of a sewage treatment system according to an embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the drawings and specific examples.
As shown in fig. 1, the self-heating sewage treatment system according to the embodiment of the present invention includes an AO unit, a hot water tank, a membrane cleaning unit, a sludge drying unit, and an anaerobic unit, and one or more of a first heat exchange unit, a second heat exchange unit, a third heat exchange unit, and a fourth heat exchange unit; the first heat exchange unit is positioned between the AO unit and the hot water tank and is used for exchanging heat generated by the AO unit into the hot water tank; the second heat exchange unit is positioned between the hot water tank and the membrane cleaning unit and is used for exchanging heat in the hot water tank to the membrane cleaning unit; the third heat exchange unit is positioned between the hot water tank and the sludge drying unit and is used for exchanging heat in the hot water tank to the sludge drying unit; the fourth heat exchange unit is positioned between the hot water tank and the anaerobic unit and is used for exchanging heat of the hot water tank to the anaerobic unit. The invention uses the thought of the low temperature heat pump device and the centralized collection and the decentralized utilization of the heat energy to realize the energy transfer of the heat dissipation end of the system to the heat demand end of the system, and can reduce the whole energy consumption of the system.
In a specific embodiment, the AO unit comprises a biochemical pond, and the first heat exchange unit comprises a heat exchanger a, a heat exchanger B, a jet pump, a heat pump compressor # 1, a throttle expansion valve and a circulating water pump # 1; the hot side inlet of the heat exchanger A is connected with the biochemical tank through a jet pump, and the hot side outlet is connected with the biochemical tank; the hot side inlet of the heat exchanger B is connected with the outlet of the heat pump compressor 1#, the hot side outlet is connected with the cold side inlet of the heat exchanger A through the throttle expansion valve 1#, the cold side inlet of the heat exchanger B is connected with the circulating water pump 1#, and the cold side outlet is connected with the reflux port 1# of the hot water tank. Wherein the medium on the side of the jet pump is a mud-water mixture of a biochemical pool. Wherein the method comprises the steps of
In one embodiment, the hot water tank inlet water is from the system water supply, and when the liquid level detected by the liquid level meter is lower than a set value, the system water supply valve is opened, and the system water supply valve is stopped when the liquid level of the water tank reaches the set value. During normal operation, the circulating water pump 1# continuously operates and exchanges heat with the heat exchanger B to raise or maintain the temperature of the water tank.
In one embodiment, the membrane cleaning unit comprises a membrane cleaning water tank, and the second heat exchange unit comprises a circulating water pump 2#, a circulating pipe, a cooling water supplementing pipe, a water outlet pipe, a temperature detector and a liquid level detector. The circulating water pump No. 2 is a circulating pipeline for establishing a membrane cleaning water tank and a hot water tank. When the temperature of the membrane cleaning water tank is lower than a set value, a circulating water pump 2# is started and used for lifting the water temperature until the first set temperature is reached. When the temperature of the film cleaning water tank is higher than a second set value, the cooling water supplementing pipe supplements water for the film cleaning water tank so as to reduce the temperature of the water tank (mainly used during starting). The water outlet pipe of the membrane cleaning water tank is respectively connected with the cleaning water tanks of the membrane units. When the film cleaning signal is received, the valve of the water outlet pipe is opened, and water is conveyed to the corresponding film unit cleaning water tank.
In a specific embodiment, the anaerobic unit comprises an anaerobic reactor, and the fourth heat exchange unit comprises a circulating water pump 3#, a mud-water heat exchanger and a circulating water pump 4#. The mud-water heat exchanger is one of a plate type, a tube type or a sleeve type and is used for heating the anaerobic reactor; the hot side of the muddy water heat exchanger is connected with a hot water tank through a circulating water pump 3#, and the cold side of the muddy water heat exchanger is connected with the anaerobic reactor through a circulating water pump 4#, and is connected with a flushing water pump. A temperature detector is arranged in the anaerobic system, and when the detected temperature is lower than the set temperature, the circulating water pump 3# and the circulating water pump 4# are started; when the temperature detected by the temperature detector is higher than the set temperature, the circulating water pump 3# and the circulating water pump 4# are stopped, then the flushing water pump is started to flush the cold side, the water source is from the hot water tank, and the mud-water mixture generated by flushing enters the anaerobic reactor.
In a specific embodiment, the sludge drying unit comprises a circulating preheater (air-cooled heat exchanger), a low temperature dryer, a condenser and a circulating air pipe. The air-cooled heat exchanger is coiled or conventional condensing type and is used for drying sludge at low temperature, hot water is moved in the pipe, and the air-cooled heat exchanger is connected with a hot water tank through a circulating water pump 5 #. When sludge drying is started, a circulating water pump 5# is started, a drying circulating fan 1# is started, heat energy of water is transferred to gas after wind passes through the outer side of a coil, then wind is blown into a drying machine, water in the sludge is evaporated after the hot wind is directly contacted with the sludge under negative pressure, and the hot wind is changed into low-temperature high-humidity wind. The high-temperature and high-humidity air is pumped by a drying circulating fan 2# and is condensed into liquid water due to temperature reduction after passing through the surface of a condenser, circulating water is continuously circulated in a condenser tube, and the circulating water is connected with a heat exchanger C (hot side) and is used for maintaining or reducing the circulating water temperature.
In addition, a fifth heat exchange unit is arranged between the condenser and the user hot water supply tank and is used for exchanging heat of the condensing unit to the user hot water supply tank. Specifically, the fifth heat exchange unit comprises a heat exchanger C, a heat exchanger D, a heat pump compressor 2# and a throttle expansion valve 2# which are sequentially connected in series to form a loop, and the heat exchanger C, the heat pump compressor 2# and the throttle expansion valve 2# form a loop between the heat exchanger D and a user heating water tank. The air medium (similar to a heat pump evaporator) is arranged in the cold side of the heat exchanger C, the heat exchanger D is arranged, the hot side inlet is connected with the 2# outlet of the heat pump compressor, and the hot side outlet is connected with the cold side inlet of the heat exchanger C. The cold side of the heat exchanger D is connected with a circulating water pump, and the circulating water pump 6# is connected with the hot water tank 2# and a heat supply user.
According to the sewage treatment system, the heat pump technology is utilized to realize the recovery and comprehensive utilization of the two-stage AO heat production, the original scattered heat supply and heat dissipation are integrated into an organic supply-demand relationship, the heat supply of the heat-required end of a factory is realized, the problem that the water temperature of the membrane cleaning water is too low (mainly in low-temperature seasons) when most of the membrane cleaning CIP devices do not have an automatic heating function is solved, and the dried waste heat can be recovered for the second time and heated for the second time.
Two specific examples of the sewage treatment system in practical application are provided below:
in one embodiment, in a landfill leachate treatment plant, 65-70 ℃ hot water is prepared by using a two-stage AO heat source and performing heat exchange on a mud-water mixture at 35 ℃ by adopting a high-temperature water source heat pump and a plate heat exchanger. Wherein the water for cleaning the membrane unit at 38 ℃ is obtained in a water distribution mode; 1800m is maintained by a mud-water heat exchanger 3 The temperature of the anaerobic reactor is stabilized at 34-36 ℃ and the backwater temperature is 60-63 ℃; hot air at 50-58 ℃ is obtained through a disc heat exchanger and used for sludge drying; and the heat pump is used for supplying heat to a maintenance workshop with the area of about 50 square meters for the return water of the drying heat energy.
In another embodiment, in a certain incineration leachate treatment plant, two-stage AO heat sources are utilized to exchange heat on a mud-water mixture at 33 ℃, and a high-temperature water source heat pump and a plate heat exchanger are adopted to prepare 60-65 ℃ hot water. Wherein the water for cleaning the membrane unit at 38 ℃ is obtained in a water distribution mode, and the heat source water is directly used for supplying heat in winter to an office area with the area of about 220 square meters and synchronously supplying hot water to a laboratory.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the invention without departing from the principles thereof are intended to be within the scope of the invention as set forth in the following claims.
Claims (9)
1. The self-heating sewage treatment system comprises an AO unit, a hot water tank, a membrane cleaning unit, a sludge drying unit and an anaerobic unit, and is characterized by further comprising a first heat exchange unit, a second heat exchange unit, a third heat exchange unit and a fourth heat exchange unit; the first heat exchange unit is positioned between the AO unit and the hot water tank and is used for exchanging heat generated by the AO unit into the hot water tank; the second heat exchange unit is positioned between the hot water tank and the membrane cleaning unit and is used for exchanging heat in the hot water tank to the membrane cleaning unit; the third heat exchange unit is positioned between the hot water tank and the sludge drying unit and is used for exchanging heat in the hot water tank to the sludge drying unit; the fourth heat exchange unit is positioned between the hot water tank and the anaerobic unit and is used for exchanging heat in the hot water tank to the anaerobic unit;
the fourth heat exchange unit comprises a circulating water pump 3#, a muddy water heat exchanger and a circulating water pump 4#, wherein the hot side of the muddy water heat exchanger is connected with the hot water tank through the circulating water pump 3#, and the cold side of the muddy water heat exchanger is connected with the anaerobic unit through the circulating water pump 4#, and is connected with the flushing water pump; a temperature detector is arranged in the anaerobic system, and when the detected temperature is lower than the set temperature, the circulating water pump 3# and the circulating water pump 4# are started; when the temperature detected by the temperature detector is higher than the set temperature, the circulating water pump 3# and the circulating water pump 4# are stopped, then the flushing water pump is started to flush the cold side, the water source is from the hot water tank, and the mud-water mixture generated by flushing enters the anaerobic reactor.
2. The self-heating sewage treatment system according to claim 1, wherein the first heat exchange unit comprises a heat exchanger a, a heat exchanger B, a jet pump, a heat pump compressor 1#, a throttle expansion valve and a circulating water pump 1#; the hot side inlet of the heat exchanger A is connected with the AO unit through a jet pump, and the hot side outlet is connected with the AO unit; the hot side inlet of the heat exchanger B is connected with the outlet of the heat pump compressor 1#, the hot side outlet is connected with the cold side inlet of the heat exchanger A through the throttle expansion valve 1#, the cold side inlet of the heat exchanger B is connected with the circulating water pump 1#, and the cold side outlet is connected with the reflux port 1# of the hot water tank.
3. A self-heating sewage treatment system according to claim 2, wherein the heat exchanger a and the heat exchanger B are plate heat exchangers or tube heat exchangers.
4. A self-heating sewage treatment system according to claim 1, 2 or 3, wherein the second heat exchange unit comprises a circulating water pump 2#, the inlet of the circulating water pump 2# is connected with the water outlet of the membrane cleaning unit, the outlet of the circulating water pump 2# is connected with the reflux inlet 2# of the hot water tank, and the water outlet of the hot water tank is connected with the water inlet of the membrane cleaning unit.
5. The self-heating sewage treatment system according to claim 4, wherein the membrane cleaning unit comprises a membrane cleaning water tank and a plurality of membrane unit cleaning water tanks, the hot water tank is connected with the membrane cleaning water tank, and the membrane cleaning water tanks are respectively connected with each membrane unit cleaning water tank.
6. A self-heating sewage treatment system according to claim 1, 2 or 3, wherein the third heat exchange unit comprises a circulation preheater and a circulation water pump 5#, and the water outlet of the hot water tank is connected with the reflux inlet 4# of the hot water tank sequentially through the circulation preheater and the circulation water pump 5#.
7. The self-heating sewage treatment system according to claim 6, wherein the sludge drying unit comprises a low-temperature dryer, a condenser and a circulating air pipe, and the circulating air pipe is connected with the circulating preheater after sequentially passing through the circulating preheater, the low-temperature dryer and the condenser.
8. The self-heating sewage treatment system of claim 7, wherein a fifth heat exchange unit is further provided between the condenser and the user's hot water tank for exchanging heat of the condensing unit to the user's hot water tank.
9. A self-heating sewage treatment system according to claim 8, wherein the fifth heat exchange unit comprises a heat exchanger C, a heat exchanger D, a heat pump compressor 2# and a throttle expansion valve 2# which are sequentially connected in series to form a loop, and the heat exchanger D and the user heating water tank form a loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111547363.3A CN114230008B (en) | 2021-12-16 | 2021-12-16 | Self-heating sewage treatment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111547363.3A CN114230008B (en) | 2021-12-16 | 2021-12-16 | Self-heating sewage treatment system |
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| CN114230008A CN114230008A (en) | 2022-03-25 |
| CN114230008B true CN114230008B (en) | 2023-12-05 |
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| CN202111547363.3A Active CN114230008B (en) | 2021-12-16 | 2021-12-16 | Self-heating sewage treatment system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2945035A1 (en) * | 1979-11-08 | 1981-05-27 | Tecon Technische Beratungs-Gesellschaft mbH, 7140 Ludwigsburg | Energy saving in biological sewage treatment - by heat pumps and heat exchangers |
| CN102059158A (en) * | 2009-11-17 | 2011-05-18 | 林欣栋 | Regenerative material regeneration system |
| CN102849912A (en) * | 2012-09-27 | 2013-01-02 | 扬州澄露环境工程有限公司 | Sludge hydrolysis acidification system |
| CN105650713A (en) * | 2016-03-21 | 2016-06-08 | 河北宏龙环保科技有限公司 | Sewage treatment and treated sewage heat energy utilization system |
| CN206955756U (en) * | 2017-07-20 | 2018-02-02 | 光大环境科技（中国）有限公司 | A kind of equipment handled percolate |
| CN209242869U (en) * | 2018-11-30 | 2019-08-13 | 荣成市固废综合处理与应用产业园有限公司 | A kind of winter percolate preheating system |
| CN112125494A (en) * | 2020-10-12 | 2020-12-25 | 福建中盟环保科技有限公司 | Device for drying sludge by recovering heat energy generated by biological treatment of industrial wastewater |
-
2021
- 2021-12-16 CN CN202111547363.3A patent/CN114230008B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2945035A1 (en) * | 1979-11-08 | 1981-05-27 | Tecon Technische Beratungs-Gesellschaft mbH, 7140 Ludwigsburg | Energy saving in biological sewage treatment - by heat pumps and heat exchangers |
| CN102059158A (en) * | 2009-11-17 | 2011-05-18 | 林欣栋 | Regenerative material regeneration system |
| CN102849912A (en) * | 2012-09-27 | 2013-01-02 | 扬州澄露环境工程有限公司 | Sludge hydrolysis acidification system |
| CN105650713A (en) * | 2016-03-21 | 2016-06-08 | 河北宏龙环保科技有限公司 | Sewage treatment and treated sewage heat energy utilization system |
| CN206955756U (en) * | 2017-07-20 | 2018-02-02 | 光大环境科技（中国）有限公司 | A kind of equipment handled percolate |
| CN209242869U (en) * | 2018-11-30 | 2019-08-13 | 荣成市固废综合处理与应用产业园有限公司 | A kind of winter percolate preheating system |
| CN112125494A (en) * | 2020-10-12 | 2020-12-25 | 福建中盟环保科技有限公司 | Device for drying sludge by recovering heat energy generated by biological treatment of industrial wastewater |
Non-Patent Citations (1)
| Title |
|---|
| W•F•欧文.《废水处理节能》.化学工业出版社,1993,第191页. * |
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| CN114230008A (en) | 2022-03-25 |
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