CN102976569A - Water source heat pump-sludge digestion integrated system - Google Patents
Water source heat pump-sludge digestion integrated system Download PDFInfo
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- CN102976569A CN102976569A CN2012104680861A CN201210468086A CN102976569A CN 102976569 A CN102976569 A CN 102976569A CN 2012104680861 A CN2012104680861 A CN 2012104680861A CN 201210468086 A CN201210468086 A CN 201210468086A CN 102976569 A CN102976569 A CN 102976569A
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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
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Abstract
The invention discloses a water source heat pump-sludge digestion integrated system. The water source heat pump-sludge digestion integrated system comprises a sludge gravity concentration basin, a water suction pump, a water source heat pump unit, a muddy water heat exchanger, sludge digestion tanks and a biogas generator. The water suction pump is communicated with a secondary treatment water outlet. A water outlet of the water suction pump is communicated with the water source heat pump unit by a filter. A hot water outlet of the water source heat pump unit is communicated with the muddy water heat exchanger. The sludge gravity concentration basin is communicated with a sludge discharge hole of a sewage treatment device. A sludge outlet is communicated with a sludge inlet of the muddy water heat exchanger. An outlet of heated sludge is communicated with the sludge digestion tanks. Biogas outlets of the sludge digestion tanks are communicated with a gas supply pipe of the biogas generator by a desulfurization tower, a gas storage tank and a biogas supercharger. A hot water outlet of a waste heat recovery device of the biogas generator is communicated with a hot water inlet of the muddy water heat exchanger. The water source heat pump-sludge digestion integrated system is suitable for comprehensive utilization of water, heat and energy in a sewage treatment plant, greatly improves effects of energy saving and emission reduction, and has very obvious environmental-protection effects.
Description
Technical field
The present invention relates to a kind of technical field of sewage, belong to sewage work's energy conservation, specifically the integrated system that combines of a kind of water source heat pump technology and sludge digestion technique.
Background technology
Sewage work can produce a large amount of mud in sewage treatment process, generally contain organism, heavy metal, pathogenic bacteria etc. in this mud.If improper to these sludge treatment, be easy to environment is caused secondary pollution, the function of sewage work can not be brought into play fully.In addition, because Pollutant levels are high in the mud, the expense for the treatment of and disposal is higher, substantially accounts for about 20～50% of whole sewage work sewage disposal expense.Therefore, no matter still consider running cost in pollutent control, the improvement of sludge disposal technology and raising have important practical significance.
Sludge digestion is a kind of method of sludge treatment, is under aerobic or oxygen free condition, utilizes the effect of microorganism, makes organism in the mud be converted into technique than stable material.At present, adopting more is mesophilic digestion because temperature is when digesting about 35 ℃, organic gas production rate than very fast, gas production rate is larger, the scum silica frost that generates is then less, and Digestive system separates with mud and is easier to.In order to keep digesting temperature, need to heat mud.The method of mud heating has two kinds of pool heating process and pond external heats.Pool heating process is directly to pass into digester or pass into the coil pipe that is located in the digester with hot water or steam to heat, and this method seldom adopts owing to there are many shortcomings.The most frequently used method is to adopt the pond external heating mode of mud-water heat exchanger at present.In the process that city domestic sewage and sewage work dispose of sewage, containing a large amount of Lowlevel thermal energies, Lowlevel thermal energy in the sewage can become high level heat by water source heat pump system and be used, and can guarantee the quite high coefficient of performance.Sewage work's water yield is sufficient, stable simultaneously, is stable thermal source.
The development of sludge digestion technology and water source heat pump technology, for realizing that water source heat pump technology combines with sludge digestion technique, energy-saving and cost-reducing, the reduction cost of sewage disposal that improve sewage work provide the technology possibility, and have had extraordinary economic benefit and development prospect.
Summary of the invention
The objective of the invention is in order to solve the problems of the technologies described above, a kind of water resource heat pump and sludge digestion integrated system are proposed, this system adopts one or more levels mesophilic digestion, the biogas that utilizes sludge digestion to produce generates electricity, the waste heat that generator produces digests thermal source as one-level, the hot water that the heat energy of water resource heat pump recovery effluent of municipal sewage plant produces can be realized the comprehensive utilization of sewage work's internal water, heat, energy as the supplemental heat source of sludge digestion.
The objective of the invention is to be achieved through the following technical solutions:
Water resource heat pump and sludge digestion integrated system, it is characterized in that: be provided with mud gravity concentration tank, water pump, water source heat pump units, muddy water interchanger, sludge digestion tank, biogas generator, the water-in of described water pump is communicated with the secondary treatment yielding water mouth of sewage work's waste disposal plant, the water outlet of water pump is communicated with described water source heat pump units by a strainer, and the hot water outlet of this water source heat pump units is communicated with the hot water inlet of described muddy water interchanger; The mud import of described mud gravity concentration tank is communicated with the mud discharging mouth of mud after the discharge of sewage work waste disposal plant is processed, the mud mouth of concentration basin is communicated with the mud inlet of described muddy water interchanger, is used for being communicated with the mud inlet of described sludge digestion tank through the mud mouth of heated mud behind the muddy water interchanger; Sludge digestion tank is provided with the biogas relief outlet, this biogas relief outlet behind thionizer, gas storage holder and biogas supercharging blower with the gas supply pipeline connection of described biogas generator; This biogas generator is provided with waste-heat recovery device, and the hot water outlet of this device is communicated with the hot water inlet of described muddy water interchanger; The cooling water outlet of described muddy water interchanger is communicated with the cold water pipe of the waste-heat recovery device of described biogas generator and the cold water pipe of described water source heat pump units by recycle pump; The electricity output of biogas generator is communicated with the feed circuit of described waste disposal plant.
Water resource heat pump of the present invention and sludge digestion integrated system further improve and the additional project of enforcement is:
Described sludge digestion tank is provided with the secondary sludge digestion tank.
Described sludge digestion tank is provided with the multiple stage sludge digestion pond.
The mud discharging mouth of described sludge digestion tank is communicated with storage basin, and the mud discharging mouth of storage basin is communicated with sludge dewatering equipment.
The sludge treatment flow process: the mud of water ratio 97% becomes 94% through water ratio behind the gravity concentration tank.The cold mud of water ratio 94%, the temperature in 1～May, 9～December are about about 15 ℃, and the temperature in 5～September is about about 20 ℃; In order to keep the temperature of mesophilic digestion, enter temperature after muddy water interchanger and the hot water heat exchange and become warm sludge about 35 ℃.Warm sludge successively enters one-level digester and secondary digester, and wherein 50% organism is decomposed and produces biogas.Postdigestive mud enters storage basin, outward transport after the pressure filter dehydration.
Water source heat pump units heats flow process: the sewage second-level water outlet after waste disposal plant is processed is through as required water delivery of water pump, and winter is at 11～14 ℃, enters the water source heat pump set through filter is laggard 25～27 ℃ of summers, discharges after extracting heat.Water source heat pump units will be extracted the heat of 5 ℃ of temperature difference in the secondary effluent and the electric energy of consumption is passed to the cold water that enters heat pump set together, make the hot water about 60 ℃.
The supplemental heat source source: the waste heat that methane power generating system produces changes from the different of load with its biogas generator operation number of units.Under 5～September nominal situation, cold mud temperature is higher, and the waste heat energy that methane power generating system produces satisfies the required heat of heating mud.When gas production rate during the maintenance of few or digester, biogas generator is oepration at full load not, number of units reduce and the situation than the cold season joint under, when the waste heat that produces only according to biogas generator can not satisfy the required heat energy of hot digestion mud, need utilize as a supplement thermal source of water source heat pump system.
Advantage of the present invention:
1) structure improvement, simple to operate, running cost is low;
2) can take full advantage of the waste heat of municipal effluent and sewage work and the biogas that sludge digestion tank produces, utilize dexterously water source heat pump technology and biogas power generation technology, realize efficient energy-saving and emission-reducing, reduced the cost of sewage disposal, environmental benefit and economic benefit highly significant;
3) Effective Raise the digestion quality of mud, the secondary pollution that greatly reduces even avoided mud to cause has realized the innoxious and recycling treatment of mud better, the perfect function of sewage work.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
The present invention is described in detail below in conjunction with drawings and Examples.Embodiment: with reference to accompanying drawing, a kind of water resource heat pump and sludge digestion integrated system, be provided with mud gravity concentration tank 2, water pump 13, water source heat pump units 3, muddy water interchanger 4, one-level sludge digestion tank 5, secondary sludge digestion tank 6, biogas generator 11, the water-in of described water pump is communicated with the secondary treatment yielding water mouth of sewage work waste disposal plant 1, the water outlet of water pump is communicated with water source heat pump units by a strainer, the hot water outlet of this water source heat pump units is communicated with the hot water inlet of described muddy water interchanger: the mud import of described mud gravity concentration tank is communicated with the mud discharging mouth that mud is discharged in the processing of sewage work waste disposal plant afterwards, the mud mouth of concentration basin is communicated with the mud inlet of described muddy water interchanger, and the mud mouth of the mud after being heated behind the process muddy water interchanger is communicated with the mud inlet of described sludge digestion tank; Sludge digestion tank is provided with the biogas relief outlet, this biogas relief outlet behind thionizer 8, gas storage holder 9 and biogas supercharging blower 10 with the gas supply pipeline connection of described biogas generator; This biogas generator is provided with waste-heat recovery device 12, and the hot water outlet of this device is communicated with the hot water inlet of described muddy water interchanger; The cooling water outlet of described muddy water interchanger is communicated with the cold water pipe of the waste-heat recovery device of described biogas generator and the cold water pipe of described water source heat pump units by recycle pump; The electricity output of biogas generator is communicated with the feed circuit of described waste disposal plant.The mud discharging mouth of described sludge digestion tank is communicated with storage basin 7, and the mud discharging mouth of storage basin is communicated with sludge dewatering equipment.
Present embodiment and a large-scale wastewater treatment plant
The waste disposal plant of technique makes up, trial run through half a year obtains extraordinary effect, economize on electricity 30% in the sewage sludge treating processes, the quantity discharged of mud has reduced 20%, the content of the harmful organisms such as organism, pathogenic bacteria has reduced 80% in the mud of particularly discharging, and has obviously improved the beneficial effect of sludge treatment.
Be noted that any similar replacement or close change that the technical characterictic of patent of the present invention is made, still within the rights protection scope of patent of the present invention.
Claims (4)
1. a water resource heat pump and sludge digestion integrated system, it is characterized in that: be provided with mud gravity concentration tank (2), water pump (13), water source heat pump units (3), muddy water interchanger (4), sludge digestion tank (5,6), biogas generator (11), the water-in of described water pump is communicated with the secondary treatment yielding water mouth of sewage work's waste disposal plant (1), the water outlet of water pump is communicated with described water source heat pump units by a strainer, and the hot water outlet of this water source heat pump units is communicated with the hot water inlet of described muddy water interchanger; The mud import of described mud gravity concentration tank is communicated with the mud discharging mouth of mud after the discharge of sewage work waste disposal plant is processed, the mud mouth of mud gravity concentration tank is communicated with the mud inlet of described muddy water interchanger, and the mud mouth of heated mud is communicated with the mud inlet of described sludge digestion tank for discharging through the muddy water interchanger; Sludge digestion tank is provided with the biogas relief outlet, this biogas relief outlet behind thionizer (8), gas storage holder (9) and biogas supercharging blower (10) with the gas supply pipeline connection of described biogas generator; This biogas generator is provided with waste-heat recovery device (12), and the hot water outlet of this device is communicated with the hot water inlet of described muddy water interchanger; The cooling water outlet of described muddy water interchanger is communicated with the cold water pipe of the waste-heat recovery device of described biogas generator and the cold water pipe of described water source heat pump units by recycle pump; The electricity output of biogas generator is communicated with the feed circuit of described waste disposal plant.
2. a kind of water resource heat pump according to claim 1 and sludge digestion integrated system, it is characterized in that: described sludge digestion tank is provided with the secondary sludge digestion tank.
3. a kind of water resource heat pump according to claim 1 and sludge digestion integrated system, it is characterized in that: described sludge digestion tank is provided with the multiple stage sludge digestion pond.
4. a kind of water resource heat pump according to claim 1 and sludge digestion integrated system, it is characterized in that: the mud discharging mouth of described sludge digestion tank is communicated with storage basin (7), and the mud discharging mouth of storage basin is communicated with sludge dewatering equipment.
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| CN2012104680861A CN102976569A (en) | 2012-11-15 | 2012-11-15 | Water source heat pump-sludge digestion integrated system |
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| CN2012104680861A CN102976569A (en) | 2012-11-15 | 2012-11-15 | Water source heat pump-sludge digestion integrated system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103224315A (en) * | 2013-03-21 | 2013-07-31 | 曹玉成 | Sludge comprehensive treatment and conversion product recycle method |
| CN104291545A (en) * | 2014-11-04 | 2015-01-21 | 武汉都市环保工程技术股份有限公司 | Sludge heat exchanger |
| CN107512818A (en) * | 2017-10-23 | 2017-12-26 | 陈爱华 | A kind of coal mine equipment and its method of work with wastewater treatment structure |
| CN107585941A (en) * | 2017-10-23 | 2018-01-16 | 陈爱华 | Coal mine equipment with wastewater treatment structure |
| CN107935290A (en) * | 2017-12-26 | 2018-04-20 | 李正梅 | A kind of colliery uses equipment and its method of work |
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| CN101239771A (en) * | 2008-03-14 | 2008-08-13 | 清华大学 | Water source heat pump and sludge anaerobic assimilation integration method and system |
| CN102583930A (en) * | 2012-03-17 | 2012-07-18 | 山东民和生物科技有限公司 | Livestock excrement biogas generation method and livestock excrement biogas generation system |
| CN202430093U (en) * | 2011-12-29 | 2012-09-12 | 广州市市政工程设计研究院 | Energy-recycled denitrification and decarbonization coupled sewage treatment equipment |
| CN202898179U (en) * | 2012-11-15 | 2013-04-24 | 北京百氏源环保技术有限公司 | Water source heat pump and sludge digestion integrated system |
-
2012
- 2012-11-15 CN CN2012104680861A patent/CN102976569A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101239771A (en) * | 2008-03-14 | 2008-08-13 | 清华大学 | Water source heat pump and sludge anaerobic assimilation integration method and system |
| CN202430093U (en) * | 2011-12-29 | 2012-09-12 | 广州市市政工程设计研究院 | Energy-recycled denitrification and decarbonization coupled sewage treatment equipment |
| CN102583930A (en) * | 2012-03-17 | 2012-07-18 | 山东民和生物科技有限公司 | Livestock excrement biogas generation method and livestock excrement biogas generation system |
| CN202898179U (en) * | 2012-11-15 | 2013-04-24 | 北京百氏源环保技术有限公司 | Water source heat pump and sludge digestion integrated system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103224315A (en) * | 2013-03-21 | 2013-07-31 | 曹玉成 | Sludge comprehensive treatment and conversion product recycle method |
| CN103224315B (en) * | 2013-03-21 | 2014-05-14 | 曹玉成 | Sludge comprehensive treatment and conversion product recycle method |
| CN104291545A (en) * | 2014-11-04 | 2015-01-21 | 武汉都市环保工程技术股份有限公司 | Sludge heat exchanger |
| CN104291545B (en) * | 2014-11-04 | 2016-08-24 | 武汉都市环保工程技术股份有限公司 | Mud heat exchanger |
| CN107512818A (en) * | 2017-10-23 | 2017-12-26 | 陈爱华 | A kind of coal mine equipment and its method of work with wastewater treatment structure |
| CN107585941A (en) * | 2017-10-23 | 2018-01-16 | 陈爱华 | Coal mine equipment with wastewater treatment structure |
| CN107935290A (en) * | 2017-12-26 | 2018-04-20 | 李正梅 | A kind of colliery uses equipment and its method of work |
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Application publication date: 20130320 |