CN109052844A - A kind of municipal sludge hydro-thermal dehydration filtrate and foul smell synchronous treatment process and system - Google Patents
A kind of municipal sludge hydro-thermal dehydration filtrate and foul smell synchronous treatment process and system Download PDFInfo
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- CN109052844A CN109052844A CN201811012625.4A CN201811012625A CN109052844A CN 109052844 A CN109052844 A CN 109052844A CN 201811012625 A CN201811012625 A CN 201811012625A CN 109052844 A CN109052844 A CN 109052844A
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- foul smell
- dehydration filtrate
- anaerobic
- thermal dehydration
- municipal sludge
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention discloses a kind of municipal sludge hydro-thermal dehydration filtrates and foul smell synchronous treatment process and system, are related to environmental technology field.The technique includes: to collect high temperature dehydration filtrate, carries out anaerobic digestion after heat exchanger is cooling, obtains anaerobic effluent；Anaerobic effluent is imported heat exchanger as cold source medium to cool down high temperature dehydration filtrate；The raised anaerobic effluent of temperature is adjusted into pH to alkalinity；Stripping is carried out with anaerobic effluent of the foul smell to alkalinity；Stripping treated gas and liquid discharge after handling respectively.The system is made according to the technique.The present invention synchronously completes filtrate stripping and foul smell alkali cleaning, reduces processing step, section land occupation, investment；Alkali cleaning is carried out to foul smell with hydro-thermal dehydration filtrate, saves in independent Odor control alkali cleaning to reagent cost；Anaerobic effluent exchange heat in system, the waste heat that hydro-thermal dehydration filtrate is utilized heats up to it, while saving medicament, improves stripping effect；The technique also achieves heat recovery, reduces energy consumption.
Description
Technical field
The present invention relates to environmental technology field, especially a kind of municipal sludge hydro-thermal dehydration filtrate and foul smell synchronization process work
Skill and system.
Background technique
With the continuous quickening of our urbanization process, the yield of city domestic sewage is increasing, wastewater treatment rate
Constantly improve, the yield of sludge also increases, the high organic content in sludge, if mishandling, it will destroys ecological ring
Border threatens human health.Specific resistance to filtration problem is more and more prominent, however there is one for traditional sludge processing method of disposal
A little problems and limitation, if high water content sludge landfill is dangerous there is collapsing, anaerobic sludge digestion low efficiency runs difference etc..
Sludge hydrothermal technology can make insoluble mud granule disintegrate, cell rupture, and cell organic matter discharges simultaneously
Further hydrolysis, improves the biodeposition and dehydration property of sludge, while improving the biodegradability of sludge and its liquid phase, energy
Enough solve the predicament that current specific resistance to filtration is faced.At present, sludge hydrothermal technology obtains extensive promotion and application
Not only worldwide there are the Engineering Projects of dozens of municipal sludge project, in recent years at home, Beijing, Changsha, depth
The ground such as ditch between fields are also applied.As it can be seen that hydrothermal technique has become a kind of mainstream technology of municipal sludge process field.But hydro-thermal
Organic matter discharges an one-step hydrolysis of going forward side by side, the organic matter containing high concentration in sludge water hot filtrate, to subsequent filter in reaction process
Liquid processing and discharge propose high requirement, and processing cost is also higher；The temperature of hydro-thermal filtrate is higher simultaneously is not easy to directly locate
Reason, if while do not utilized suitably in filtrate there are also a large amount of waste heats, waste the energy.
On the other hand, sludge can also generate a large amount of foul gas in innocent treatment procedure.Especially at sludge hydro-thermal
The foul smell composition generated during reason is increasingly complex and difficult, and odor concentration can reach 1,000,000 dimensions, hydrogen sulfide in foul smell
Concentration reaches 7000-8000mg/m3, and methyl mercaptan concentration reaches 2500-3000mg/m3, and methyl sulfide concentration reaches 1500-
2000mg/m3, dimethyl disulfide concentration reach 1300-1800mg/m3 etc..Studies have shown that foul smell to human body respiration, digestion,
Cardiovascular, endocrine and nervous system can all cause different degrees of infringement, and human body is made to generate canceration and distortion.In Treatment of Sludge
In treatment implementation process, the collection and processing of foul smell are also the most important thing.
Summary of the invention
First invention purpose of the invention is: in view of the above problems, providing a kind of municipal sludge hydro-thermal dehydration
Municipal sludge hydro-thermal dehydration filtrate and foul smell are synchronized processing by filtrate and foul smell synchronous treatment process, the technique, improve two
The treatment effect of person simplifies processing step, while reducing energy consumption, has a good application prospect.
Second purpose of the invention is, provides a kind of municipal sludge hydro-thermal dehydration filtrate and foul smell System of Synchronous Processing, should
System is made according to above-mentioned treatment process.
The technical solution adopted by the invention is as follows:
A kind of municipal sludge hydro-thermal dehydration filtrate and foul smell synchronous treatment process comprising following steps:
(1) high temperature dehydration filtrate is collected, anaerobic digestion is carried out after heat exchanger is cooling, obtains anaerobic effluent；
(2) anaerobic effluent heat exchanger is imported as cold source medium to cool down high temperature dehydration filtrate；
(3) the raised anaerobic effluent of temperature is adjusted into pH to alkalinity；Stripping is carried out with anaerobic effluent of the foul smell to alkalinity, while real
The alkali cleaning of existing foul smell；
(4) stripping alkali cleaning treated gas and liquid discharge after handling respectively.
By adopting the above-described technical solution, on the one hand being improved using the waste-heat anaerobic effluent of high temperature dehydration filtrate
Anaerobic effluent temperature improves stripping effect, energy saving；Another aspect cooled dehydrated filtrate is convenient for anaerobic digestion.Adjust temperature
Anaerobic effluent after raising promotes wherein organic matter decomposition in alkalinity, while having carried out alkali cleaning to foul smell, simplifies technique step
Suddenly.
A kind of municipal sludge hydro-thermal dehydration filtrate of the invention and foul smell synchronous treatment process, in step (2), anaerobic effluent
Temperature after heat exchange is 50-60 DEG C.
A kind of municipal sludge hydro-thermal dehydration filtrate and foul smell synchronous treatment process of invention, in step (3), temperature is increased
Anaerobic effluent adjust pH to 8-12.
A kind of municipal sludge hydro-thermal dehydration filtrate of the invention and foul smell synchronous treatment process, in step (4), gas passes through
After stripping alkali cleaning processing, then pickling is carried out, the gas after pickling discharges after harmless treatment.
A kind of municipal sludge hydro-thermal dehydration filtrate and foul smell synchronous treatment process of the invention, pickling solution are molten using sulfuric acid
Liquid, the solution after collecting pickling is for recycling inorganic salts.
By adopting the above-described technical solution, promoting recycling for resource.
A kind of municipal sludge hydro-thermal dehydration filtrate of the invention and foul smell synchronous treatment process, in step (3), stripping processing
Afterwards, liquid is up to standard after successively carrying out flocculation sedimentation, two-stage anaerobic Aerobic Process for Treatment, biological film process after adjusting pH to neutrality
Discharge.
A kind of municipal sludge hydro-thermal dehydration filtrate and foul smell System of Synchronous Processing comprising sequentially connected heat exchanger, alkali
Property conditioning tank and stripping tower；The stripping tower is connected with gas treatment equipment and liquid handling device；The heat exchanger is also connected with
Have an anaerobic reactor, and there is cold source medium inlet and outlet and heat source medium outlet and entrance, heat source medium outlet with
And cold source medium inlet is respectively connected to anaerobic reactor；Cold source media outlet is connected to the alkaline conditioning tank.
A kind of municipal sludge hydro-thermal dehydration filtrate and foul smell System of Synchronous Processing of the invention, the gas treatment equipment packet
Pickling tower is included, the pickling tower is connected to the stripping tower, is also connected with acid bath and crystallizing pond.
A kind of municipal sludge hydro-thermal dehydration filtrate and foul smell System of Synchronous Processing of the invention, the liquid handling device packet
Include sequentially connected pH conditioning tank, flocculation sedimentation tank, two-stage anaerobic aerobic tank and membrane bioreactor.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
The present invention provides a kind of municipal sludge hydro-thermal dehydration filtrates and foul smell synchronous treatment process and system, and the technique is filtrate
Stripping synchronously completes in a technique with the two processes of foul smell alkali cleaning, on the one hand, in practical engineering applications, reduces work
Skill step, section land occupation, investment；On the other hand, alkali cleaning is carried out to foul smell with hydro-thermal dehydration filtrate, saved in independent Odor control
Alkali cleaning is to reagent cost；Anaerobic effluent exchange heat in system, the waste heat that hydro-thermal dehydration filtrate is utilized heats up to it,
In the stripping of filtrate, temperature is higher, and stripping is more thorough, effect is better, more saving medicament；The same of recycling is realized in heat
When, it reduces technique reagent cost while improving process effect.
Detailed description of the invention
Examples of the present invention will be described by way of reference to the accompanying drawings, in which:
Fig. 1 is that the flow chart of municipal sludge hydro-thermal dehydration filtrate provided by the invention and foul smell synchronous treatment process and system are constituted
Figure.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, abstract), unless specifically stated,
It is replaced by other equivalent or with similar purpose alternative features.That is, unless specifically stated, each feature is a series of
An example in equivalent or similar characteristics.
Embodiment 1
As shown in Figure 1, the present embodiment provides a kind of municipal sludge hydro-thermal dehydration filtrates and foul smell synchronous treatment process comprising such as
Lower step:
Step 1: collecting high temperature dehydration filtrate, carries out anaerobic digestion after heat exchanger is cooling as heat source medium, is detested
Oxygen water outlet.
Step 2: anaerobic effluent is imported into heat exchanger as cold source medium, cooling treatment is carried out to high temperature dehydration filtrate, is detested
Oxygen leaving water temperature increases.
Step 3: the raised anaerobic effluent of temperature is adjusted into pH to alkalinity；It is blown with anaerobic effluent of the foul smell to alkalinity
It is de-, while realizing the alkali cleaning to foul smell.
Step 4: stripping treated gas and liquid discharge after handling respectively.
Embodiment 2
As shown in Figure 1, the present embodiment provides a kind of municipal sludge hydro-thermal dehydration filtrates and foul smell synchronous treatment process comprising such as
Lower step:
Step 1: collecting high temperature dehydration filtrate, carries out anaerobic digestion after heat exchanger is cooling as heat source medium, is detested
Oxygen water outlet.
Step 2: anaerobic effluent is imported into heat exchanger as cold source medium, cooling treatment is carried out to high temperature dehydration filtrate, is detested
Oxygen leaving water temperature increases.
Step 3: when the raising of anaerobic effluent temperature is 50-60 DEG C, heat exchanger is exported, pH to 10 is adjusted, is subsequently introduced
Stripping tower is collected, and foul smell carries out stripping to the alkaline anaerobic effluent of high temperature, is completed at the same time the alkali cleaning to foul smell, is respectively obtained gas
Body and liquid.
Step 4: it is discharged after stripping treated gas and liquid are handled respectively.
Embodiment 3
As shown in Figure 1, the present embodiment provides a kind of municipal sludge hydro-thermal dehydration filtrates and foul smell synchronous treatment process comprising such as
Lower step:
Step 1: collecting high temperature dehydration filtrate, carries out anaerobic digestion after heat exchanger is cooling as heat source medium, is detested
Oxygen water outlet.
Step 2: anaerobic effluent is imported into heat exchanger as cold source medium, cooling treatment is carried out to high temperature dehydration filtrate, is detested
Oxygen leaving water temperature increases.
Step 3: when the raising of anaerobic effluent temperature is 50-60 DEG C, heat exchanger is exported, pH to 12 is adjusted, is subsequently introduced
Stripping tower is collected, and foul smell carries out stripping to the alkaline anaerobic effluent of high temperature, is completed at the same time the alkali cleaning to foul smell, is respectively obtained gas
Body and liquid.
Step 4: stripping treated gas is successively harmless after sulfuric acid washing, steam-water separation, biofilter processing
Change discharge, meanwhile, the solution after collecting pickling recycles ammonia sulfate crystal.Liquid is adjusted into pH to neutrality, is then successively wadded a quilt with cotton
Qualified discharge after retrogradation shallow lake, two-stage anaerobic Aerobic Process for Treatment, biological film process.
Embodiment 4
As shown in Figure 1, the present embodiment provides a kind of municipal sludge hydro-thermal dehydration filtrate and foul smell System of Synchronous Processing, the system base
It is made in the municipal sludge hydro-thermal dehydration filtrate of embodiment 1-3 with foul smell synchronous treatment process.It includes sequentially connected
Heat exchanger, alkaline conditioning tank and stripping tower, stripping tower are connected with gas treatment equipment and liquid handling device.Heat exchanger is also connected with
There is anaerobic reactor, heat exchanger has cold source medium inlet and outlet to be passed through cold source medium, while having heat source medium outlet
With entrance to be passed through heat source medium.Heat source medium entrance is passed through the sludge water heat dehydration filtrate as heat source medium to heat exchanger.
Heat source medium outlet and cold source medium inlet are respectively connected to anaerobic reactor, so that the sludge water heat dehydration through heat exchange cooling
Filtrate, which enters, carries out anaerobic digestion in anaerobic reactor, while the anaerobic effluent after anaerobic digestion enters in heat exchanger as cold
Source medium.Cold source media outlet is connected to alkaline conditioning tank, will import alkalinity through the raised cold source medium of heat-exchange temperature and adjust
PH is adjusted in pond to alkalinity.
The stripping gas of stripping tower is to collect the foul smell that need to be handled, to realize that foul smell is synchronous with sludge water heat dehydration filtrate
Processing.On the one hand stripping tower carries out alkali cleaning to foul smell, on the other hand carry out stripping processing, stripping processing to the anaerobic effluent of heating
After obtain gas and liquid.Gas treatment equipment includes pickling tower and the subsequent processing component for being connected to pickling tower, to gas
Realize harmless treatment.Pickling tower is connected with acid bath and crystallizing pond.Acid bath storage is used for the sulfuric acid solution of pickling, crystallizing pond
Solution after recycling pickling, crystallization recycling ammonium sulfate.It should be noted that subsequent processing component can be in the prior art arbitrarily
The processing component suitable for foul smell harmless treatment.In the present embodiment, subsequent processing component includes carbonated drink interconnected point
From device and biological tank, steam-water separator is connected to pickling tube.Liquid handling device includes sequentially connected pH conditioning tank, flocculates and sink
Shallow lake pond, two-stage anaerobic aerobic tank and membrane bioreactor.Anaerobic effluent is adjusted to neutrality by pH conditioning tank, good to carry out anaerobism
Oxygen processing then carries out biological film process, last qualified discharge.
It should be noted that since sludge water heat dehydration filtrate may not be able to continuously provide, so in the heat source of heat exchanger
Between media outlet and anaerobic reactor, anaerobic reactor is between heat exchanger cold source medium entrance and heat exchanger is adjusted in alkalinity
Section is provided with buffer pool between pond.
The invention is not limited to specific embodiments above-mentioned.The present invention, which expands to, any in the present specification to be disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.
Claims (9)
1. a kind of municipal sludge hydro-thermal dehydration filtrate and foul smell synchronous treatment process, which is characterized in that it includes the following steps:
(1) high temperature dehydration filtrate is collected, anaerobic digestion is carried out after heat exchanger is cooling, obtains anaerobic effluent；
(2) anaerobic effluent heat exchanger is imported as cold source medium to cool down high temperature dehydration filtrate；
(3) the raised anaerobic effluent of temperature is adjusted into pH to alkalinity；Stripping is carried out with anaerobic effluent of the foul smell to alkalinity, while real
The alkali cleaning of existing foul smell；
(4) stripping alkali cleaning treated gas and liquid discharge after handling respectively.
2. municipal sludge hydro-thermal dehydration filtrate according to claim 1 and foul smell synchronous treatment process, which is characterized in that step
Suddenly in (2), temperature of the anaerobic effluent after heat exchange is 50-60 DEG C.
3. municipal sludge hydro-thermal dehydration filtrate according to claim 2 and foul smell synchronous treatment process, which is characterized in that step
Suddenly in (3), the raised anaerobic effluent of temperature is adjusted into pH to 8-12.
4. municipal sludge hydro-thermal dehydration filtrate according to claim 1 and foul smell synchronous treatment process, which is characterized in that step
Suddenly in (4), gas is after stripping alkali cleaning processing, then carries out pickling, and the gas after pickling discharges after harmless treatment.
5. municipal sludge hydro-thermal dehydration filtrate according to claim 4 and foul smell synchronous treatment process, which is characterized in that acid
Washing lotion uses sulfuric acid solution, and the solution after collecting pickling is for recycling inorganic salts.
6. municipal sludge hydro-thermal dehydration filtrate according to claim 1 and foul smell synchronous treatment process, which is characterized in that step
Suddenly in (3), stripping processing after, liquid after adjusting pH to neutrality, successively progress flocculation sedimentation, two-stage anaerobic Aerobic Process for Treatment,
Qualified discharge after biological film process.
7. a kind of municipal sludge hydro-thermal dehydration filtrate and foul smell System of Synchronous Processing, which is characterized in that it includes sequentially connected
Heat exchanger, alkaline conditioning tank and stripping tower；The stripping tower is connected with gas treatment equipment and liquid handling device；The heat exchange
Device is also connected with anaerobic reactor, and there is cold source medium inlet and outlet and heat source medium outlet and entrance, heat source to be situated between
Matter outlet and cold source medium inlet are respectively connected to anaerobic reactor；Cold source media outlet is connected to the alkaline conditioning tank.
8. municipal sludge hydro-thermal dehydration filtrate according to claim 7 and foul smell System of Synchronous Processing, which is characterized in that institute
Stating gas treatment equipment includes pickling tower, and the pickling tower is connected to the stripping tower, is also connected with acid bath and crystallizing pond.
9. municipal sludge hydro-thermal dehydration filtrate according to claim 7 and foul smell System of Synchronous Processing, which is characterized in that institute
Stating liquid handling device includes sequentially connected pH conditioning tank, flocculation sedimentation tank, two-stage anaerobic aerobic tank and membrane biological reaction
Device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811012625.4A CN109052844A (en) | 2018-08-31 | 2018-08-31 | A kind of municipal sludge hydro-thermal dehydration filtrate and foul smell synchronous treatment process and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811012625.4A CN109052844A (en) | 2018-08-31 | 2018-08-31 | A kind of municipal sludge hydro-thermal dehydration filtrate and foul smell synchronous treatment process and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111410352A (en) * | 2020-04-02 | 2020-07-14 | 四川深蓝环保科技有限公司 | System and process method for preparing carbon source from resource type urban biomass hydrothermal filtrate |
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| CN107640876A (en) * | 2016-07-22 | 2018-01-30 | 南京元凯生物能源环保工程有限公司 | Municipal sludge efficient anaerobe reforming unit and its method for transformation |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205700126U (en) * | 2016-04-22 | 2016-11-23 | 惠州瑞涛环保科技有限公司 | A kind of biological stripping filter tank system |
| CN107640876A (en) * | 2016-07-22 | 2018-01-30 | 南京元凯生物能源环保工程有限公司 | Municipal sludge efficient anaerobe reforming unit and its method for transformation |
| CN206375770U (en) * | 2016-09-30 | 2017-08-04 | 广州微碳科技有限公司 | A kind of steam stripping amino acid waste water preprocessing system of improvement |
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| CN111410352A (en) * | 2020-04-02 | 2020-07-14 | 四川深蓝环保科技有限公司 | System and process method for preparing carbon source from resource type urban biomass hydrothermal filtrate |
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