CN109095751A - A kind of method of lower temperature thermokalite resolution process activated sludge - Google Patents
A kind of method of lower temperature thermokalite resolution process activated sludge Download PDFInfo
- Publication number
- CN109095751A CN109095751A CN201811069008.8A CN201811069008A CN109095751A CN 109095751 A CN109095751 A CN 109095751A CN 201811069008 A CN201811069008 A CN 201811069008A CN 109095751 A CN109095751 A CN 109095751A
- Authority
- CN
- China
- Prior art keywords
- sludge
- activated sludge
- sodium hydroxide
- lower temperature
- resolution process
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
-
- 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
- C02F2303/06—Sludge reduction, e.g. by lysis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of methods of lower temperature thermokalite resolution process activated sludge, highly basic are added step by step at low temperature into activated sludge, reaction is hydrolyzed, and calcium oxide then is added or calcium hydroxide is reacted, and are finally separated by solid-liquid separation and obtain filtrate and filter residue.Activated sludge can be accomplished innoxious, minimizing and resource utilization by the present invention, all be inactivated by thermokalite effect to pathogen, by the separation of solid and liquid after hydrolysis, can be reduced to water content of the sludge from 80% or more 40% hereinafter, mud decrement 2/3rds.Furthermore residue organic matter rich in and calcium constituent can be used for preparing organic fertilizer, biological organic fertilizer, microbial bacterial agent, afforestation soil and soil conditioner.Filtrate can be used for preparing organic water-soluble fertilizer.
Description
Technical field
The invention belongs to technical field of sludge treatment more particularly to a kind of lower temperature thermokalite resolution process activated sludge
Method.
Background technique
With the continuous propulsion of urbanization process, municipal sludge yield cumulative year after year, it is contemplated that can be reached to the year two thousand twenty annual output
To 50,000,000 tons, and China " heavy water is gently dirty " phenomenon is very serious at present, and a large amount of sludge do not obtain stabilization processes, to water
Source, atmosphere, soil and human health bring very big security risk.Sludge is the solid sediment generated in sewage disposal process
Matter causes sludge components complicated since sewage species are various, includes such as silt, fiber, microorganism residuum, organic matter, nitrogen phosphorus
The ingredients such as nutrient source, heavy metal, pathogen.The pollution that any discharge and stacking of sludge are new caused by ambient enviroment has been touched
Mesh is soul-stirring.
It will be that world community chases after how using the resource in sludge on the basis of by sludge reduction, harmless treatment
The direction and goal asked will also become sludge uniquely final outlet.Sludge hot hydrolysis process technique is a kind of sludge at present
One of minimizing recycling treatment means are handled, conventional sludge pyrohydrolysis is mainly used for carrying out minimizing pretreatment, water to sludge
Product can not be directly separated by solid-liquid separation after solution, also need just to can reach Subtraction method and resource utilization by means such as anaerobic digestions
Purpose, there are also another kind of technology mode in sludge pyrohydrolysis process by being added at one time alkali solid object in sludge
Matter, such as sodium hydroxide, quick lime, to accelerate sludge hot hydrolysis rate, and this kind of alkaline matter addition manner easily leads to sludge
In organic matter decompose excessively, resource cannot get secondary use, in addition, the hydrolysis temperature of above-mentioned technical process is in 100-180
It is carried out at DEG C, and sludge inevitably generates water vapour at these elevated temperatures, so that hydrolytic process be made to need a large amount of high pressure
Equipment virtually increases Treatment of Sludge cost.
Summary of the invention
In view of this, the present invention provides a kind of method of lower temperature thermokalite resolution process activated sludge, by pair
After sludge carries out innoxious, minimizing, recycling treatment, by sludge organic matter and nitrogen resource be recycled.In addition,
The organic nitrogen liquid resource extracted in sludge can be used for preparing efficient liquid fertilizer, and solid residue can prepare soil conditioner or garden
Woods greening soil, highly effective and safe realizes the full recycling zero discharge treatment of sludge on the whole.
To achieve the goals above, the present invention provides following technical schemes: a kind of lower temperature thermokalite resolution process is living
Property sludge method, highly basic is added step by step into activated sludge at 70-90 DEG C, reaction is hydrolyzed, then be added calcium oxide or
Calcium hydroxide is reacted, and is finally separated by solid-liquid separation and is obtained filtrate and filter residue.
Further, the highly basic is added in two portions in activated sludge, and first time highly basic additive amount and second of highly basic
The mass ratio of additive amount is 0.625-3.75:1.
Further, OH in the highly basic being added for the first time-Additive amount be sludge butt quality 0.425-1.275%,
OH in second of the highly basic being added-Additive amount be sludge butt quality 0.34-0.68%.
Further, first time hydrolysis reacts 1-2h at 70-80 DEG C, and second of hydrolysis is at 80-90 DEG C
React 1-2h.
Further, sodium hydroxide or potassium hydroxide can be used in the highly basic.
Further, the highly basic uses sodium hydroxide, and the first time sodium hydroxide additive amount is sludge butt matter
The 1-3% of amount, second of sodium hydroxide additive amount are the 0.8-1.6% of sludge butt quality.
Further, the total addition level of first time sodium hydroxide and second of sodium hydroxide is the 2.2- of sludge butt quality
3.4%, and the ratio of first time sodium hydroxide and second of sodium hydroxide additive amount is 0.8-2:1.
Further, the additive amount of the calcium oxide is the 15%-30% of sludge butt quality, and calcium oxide and hydrolysis produce
Object reacts 0.5-1h at 80-90 DEG C.
Further, the filtrate can be used for the preparation of Water soluble fertilizer.
Further, the filter residue can be used for the system of organic fertilizer, microbial bacterial agent, afforestation soil or soil conditioner
It is standby.
Compared with prior art, the beneficial effects of the present invention are:
(1) final purpose of Treatment of Sludge is while sludge reduction by the organic matter and nitrogen in sludge in the present invention
Resource is recycled.The present invention by being added Sodium Hydroxide Alkaline saturated solution, and strict control first step hydrogen in two steps
Sodium oxide molybdena saturated solution additive amount and second step sodium hydroxide saturated solution additive amount, so that the resource in sludge is maximized
It utilizes.Wherein, sodium hydroxide saturated solution is added for the first time is mainly the gel structure for destroying sludge cell, accelerates activated sludge
The broken wall process of middle microorganism wall, accelerates the release of moisture content in sludge cell wall, while consuming and diluting sodium hydroxide, causes
Prevent organic matter therein from excessively being hydrolyzed by sodium hydroxide, the secondary purpose that sodium hydroxide saturated solution is added is that hydrolysis is organic
The consumption of sodium hydroxide, the effective concentration of sodium hydroxide needed for maintaining organic matter degradation is added in object, compensation for the first time.
(2) the used calcium oxide medicament of the present invention, provides sufficient calcium ion, and calcium ion is filtered to during sludge filtration
The formation of cake has important function, and the dosage of calcium ion is most important.In addition, calcium ion is important middle amount member needed for plant
The addition of element, calcium ion makes sludge residue have excellent soil conditioning function, and can supplement the element of plant shortage.
(3) activated sludge can be accomplished innoxious, minimizing and resource utilization by the present invention, by highly basic to pathogen into
Water content of the sludge from 80% or more can be reduced to 40% hereinafter, mud decrement by the separation of solid and liquid after hydrolysis by row inactivation
2/3rds.Furthermore residue organic matter rich in and calcium constituent, can be used for preparing organic fertilizer, biological organic fertilizer, microorganism
Microbial inoculum, afforestation soil and soil conditioner, filtrate can be used for preparing organic water-soluble fertilizer.
(4) present invention has many advantages, such as that temperature is low, energy consumption is small, in addition, entire technique compared with other sludge hydrolytic techniques
It does not need to be equipped with pressure vessel and equipment in the process, cost reduces 30%-50%, also improves operational safety.
Specific embodiment
For that can further illustrate the contents of the present invention, feature and effect, the following examples are hereby given further describes this hair
It is bright.It should be appreciated by those skilled in the art on the premise of without departing from the spirit and scope of the present invention can be to this hair
The details and form of bright technical solution are modified or are replaced, but these modifications and replacement each fall within protection scope of the present invention.
With reference to embodiments and control group the present invention will be further described in detail:
Activated sludge physicochemical property is as follows:
| Experimental index | Average value | Standard deviation |
| Moisture content (%) | 78 | ±7 |
| pH | 7 | ±0.5 |
| The content of organic matter (butt %) | 50 | ±20 |
| Protein content (butt %) | 28 | ±12 |
Test 1: the verifying influence with the relationship of the additive amount of second of sodium hydroxide to test result for the first time
A kind of method of lower temperature thermokalite resolution process activated sludge comprising following steps:
(1) water conditioning of mud moisture content is added to be 85%- the activated sludge of municipal sewage plant moisture content 70-85%
92%；
(2) solid type medicament sodium hydroxide is deployed into sodium hydroxide saturated solution to be added in sludge, is stirred and evenly mixed, wherein
The additive amount of sodium hydroxide by addition sludge butt quality X%, be warming up to 70 DEG C be hydrolyzed reaction 1h；
(3) a certain amount of sodium hydroxide medicament saturated solution is added again after first time hydrolysis and enters hydrolysis
Device, wherein the additive amount of sodium hydroxide by addition sludge butt quality Y%, be warming up to 80 DEG C be hydrolyzed reaction 1h；
(4) after the completion of step 2 hydrolysis, calcium oxide is configured to aqueous suspension and is sent into hydrolysis reactor, at 90 DEG C
Stir 0.5h, wherein the additive amount of calcium oxide by addition sludge butt quality 20%.
(5) material after mixing enters equipment for separating liquid from solid, obtains filtrate and filter residue after separation of solid and liquid.Solid-liquid separation
Sludge residue collect be delivered to processing workshop through crush blend other organic materials prepare organic fertilizer, biological organic fertilizer, micro- life
Object microbial inoculum, afforestation soil and soil conditioner.Obtained filtrate a part is separated by solid-liquid separation as ingredient water direct reuse to dirt
Mud hydrolysis reaction device, while another part filtrate obtains the concentration of the 20-50% containing organic matter after MVR vaporising device
Filtrate, the above filtrate voluntarily compounds N P and K and other microelements prepare liquid organic water-soluble fertilizer product.Evaporation gained condensation
Water can reuse sludge hydrolytic reaction unit, recycle.
Embodiment and the processing step of control group are as above, wherein first time sodium hydroxide additive amount (i.e. X), and second
Sodium hydroxide additive amount (i.e. Y) such as following table, in addition, the characterization of low temperature hot alkali treatment activated sludge test using residue water content,
Degradation effect of organic compound and filtrate protein content:
Upper table be experiment 1- experiment 26 in first time sodium hydroxide additive amount (X), second of sodium hydroxide additive amount (Y),
The ratio (X/Y) of sodium hydroxide total amount of adding (X+Y), first time sodium hydroxide and second of sodium hydroxide additive amount and place
Sludge characterize data after reason.In the present invention final purpose of Treatment of Sludge be will be in sludge on the basis of sludge reduction
Organic matter and nitrogen resource are recycled, and the present invention can accelerate Microbial Communities in Activated Sludge by the way that sodium hydroxide lye is added
The broken wall process of cell wall, accelerates the release of moisture content in sludge cell wall, while promoting the decomposition of organic species, makes protide
Substance decomposition is polypeptide and amino acid, but when the additional amount of sodium hydroxide lye is excessive, organic matter is decomposed into carbon dioxide, egg
White substance is decomposed into ammonia, and resource cannot be utilized effectively, therefore the additive amount of sodium hydroxide is extremely important.In addition, if
It is added at one time and excessively also be easy to cause excessive hydrolysis, so control is added in two batches, but two batches additional amount also needs control one
Determine in range, otherwise can also cause because of excessive hydrolysis sludge residue can not desiccation molding, resource is unable to get effective use.This hair
It is bright that alkali process activated sludge is characterized with treated sludge residue water content, degradation effect of organic compound and filtrate protein content
Effect, wherein sludge residue water content is less than 40%, preferably smaller than 35%；Degradation effect of organic compound within the scope of 40-60% i.e.
Can, preferably 50%；Filtrate protein content is within the scope of 2-3%, and preferably 3%.
In the experimental result of above-mentioned experiment 1- experiment 26, total addition of first time sodium hydroxide and second of sodium hydroxide
Amount is within the scope of 2.2-3.4%, and the proportionate relationship of first time sodium hydroxide and second of sodium hydroxide additive amount is in 0.8-2:1
When in range, sludge residue water content, degradation effect of organic compound and filtrate protein content are within the above range.In addition, the
The test effect that the additive amount of sodium hydroxide is greater than the additive amount of second of sodium hydroxide is better than second of sodium hydroxide
Additive amount is greater than the test effect when additive amount of first time sodium hydroxide, such as experiment 8 and experiment 9, experiment 10 and experiment 11.This
Outside, be found surprisingly that during the test, when first time sodium hydroxide additive amount be 1.5, the addition of second of sodium hydroxide
When amount is 1.2, that is, 11 process conditions are tested, test result reaches optimum value, i.e. sludge residue water content 35%, organic matter drop
Solution rate 50% and filtrate protein content 3.0%.
In addition, the sodium hydroxide in the present invention can be substituted with potassium hydroxide, if substituted using potassium hydroxide, it need to guarantee hydrogen
The additional amount of potassium oxide can provide the same amount of hydroxide ion of same sodium hydroxide, and potassium hydroxide, which is added, can improve basic agent
Cost, but directly reduce the addition of sylvite in the liquid fertilizer preparation process of rear end after on the other hand hydrolyzing in filtrate containing potassium
Amount；Calcium oxide in the present invention can also be substituted by calcium hydroxide, if substituted with calcium hydroxide, need to guarantee the addition of calcium hydroxide
Amount can provide the same amount of calcium ion of same calcium oxide.
Test 2: shadow of the order of addition of verifying sodium hydroxide addition manner and sodium hydroxide and calcium oxide to test result
It rings
Control group 1: a kind of method of lower temperature thermokalite resolution process activated sludge comprising following steps:
(1) water conditioning of mud moisture content is added to be 85%- the activated sludge of municipal sewage plant moisture content 70-85%
92%；
(2) solid type medicament sodium hydroxide is deployed into sodium hydroxide saturated solution to be added in sludge, is stirred and evenly mixed, wherein
The additive amount of sodium hydroxide by addition sludge butt quality 2.7%, be warming up to 70 DEG C be hydrolyzed reaction 1h, heat up later
Reaction 1h is hydrolyzed to 80 DEG C；
(3) after the completion of hydrolysis, calcium oxide is configured to aqueous suspension and is sent into hydrolysis reactor, is stirred at 90 DEG C
0.5h, wherein the additive amount of calcium oxide by addition sludge butt quality 20%.
(4) material after mixing enters equipment for separating liquid from solid, obtains filtrate and filter residue after separation of solid and liquid.
Control group 2: a kind of method of lower temperature thermokalite resolution process activated sludge comprising following steps:
(1) water conditioning of mud moisture content is added to be 85%- the activated sludge of municipal sewage plant moisture content 70-85%
92%；
(2) solid type medicament calcium oxide is deployed into aqueous suspension to be added in sludge, is stirred and evenly mixed, wherein calcium oxide adds
Dosage by addition sludge butt quality 20%, be warming up to 70 DEG C be hydrolyzed reaction 1h, be warming up to 80 DEG C of progress water later
Solution reaction 1h；
(3) after the completion of hydrolysis, sodium hydroxide is configured to saturated solution and is sent into hydrolysis reactor, is stirred at 90 DEG C
0.5h, wherein the additive amount of sodium hydroxide by addition sludge butt quality 2.7%.
(4) material after mixing enters equipment for separating liquid from solid, obtains filtrate and filter residue after separation of solid and liquid.
Control group 3: a kind of method of lower temperature thermokalite resolution process activated sludge comprising following steps:
(1) water conditioning of mud moisture content is added to be 85%- the activated sludge of municipal sewage plant moisture content 70-85%
92%；
(2) solid type medicament calcium oxide is deployed into aqueous suspension to be added in sludge, while sodium hydroxide is configured to satisfy
With solution be sent into hydrolysis reactor, stir and evenly mix, wherein the additive amount of calcium oxide by addition sludge butt quality 20%,
The additive amount of middle sodium hydroxide by addition sludge butt quality 2.7%.It is warming up to 70 DEG C and reaction 1h, Zhi Housheng is hydrolyzed
Temperature is hydrolyzed to 80 DEG C reacts 1h, then is warming up to 90 degrees Celsius of reaction 0.5h.
(3) material after mixing enters equipment for separating liquid from solid, obtains filtrate and filter residue after separation of solid and liquid.
That is: the parameters such as the sodium hydroxide of control group 1-3 and calcium oxide additive amount see the table below: wherein additive amount is sludge butt
Quality %, reaction temperature/DEG C, the reaction time/h.
The result that control group 1-3 handles activated sludge is as follows:
Control group 1 is that active dirt is once added in the total addition level of sodium hydroxide twice of same experiment 11 compared with experiment 11
Handled in mud, residue water content reaches 57%, and degradation effect of organic compound reaches 58%, hence it is evident that higher than experiment 11 as a result,
And protein content only 1.2% in filtrate, hence it is evident that lower than the experimental result of experiment 11, therefore that activity is added in two batches is dirty for sodium hydroxide
Hydrolysis of organic matter is excessive in the avoidable activated sludge of mud, and it is excellent that the Treatment of Sludge effect in activated sludge is added in sodium hydroxide in two batches
In the effect that sodium hydroxide is once added.In addition, control group 2 is that first calcium oxide is added in activated sludge, hydrogen is added later
Sodium oxide molybdena, control group 3 are by calcium oxide and sodium hydroxide while to be added in activated sludge, residue water content in experimental result
And degradation effect of organic compound is above experiment 11, and protein content illustrates significantly lower than the test result of experiment 11 in filtrate
In active sludge treatment of the present invention, the sequence of sodium hydroxide and calcium oxide can not be overturned, and sodium hydroxide and calcium hydroxide cannot
It is added simultaneously.
Test 3: the influence of confirmatory reaction temperature and reaction time to test result
Test result is as follows:
For the processing step of the same experiment 11 of control group 4-7 in addition to reaction temperature is different, remaining is all the same.Control group 8- control group
10 compared with experiment 11, only change the reaction time.It can be seen from above-mentioned test result the residue moisture content of control group 4-10,
Degradation effect of organic compound and filtrate protein content are not much different with experiment 11, illustrate reaction temperature and reaction time to active dirty
The influence of sludge treatment technology is not very greatly that is, first time sodium hydroxide alkali decomposition temperature reacts 1-2h at 70-80 DEG C, second
Sodium hydroxide alkali decomposition temperature reacts 1-2h, lower reaction 0.5- at 80-90 DEG C of temperature of calcium oxide solid-liquid reaction at 80-90 DEG C
1h can reach better effects.
Test 4: influence of the verifying calcium oxide additional amount to test result
A kind of method of lower temperature thermokalite resolution process activated sludge comprising following steps:
(1) water conditioning of mud moisture content is added to be 85%- the activated sludge of municipal sewage plant moisture content 70-85%
92%；
(2) solid type medicament sodium hydroxide is deployed into sodium hydroxide saturated solution to be added in sludge, is stirred and evenly mixed, wherein
The additive amount of sodium hydroxide by addition sludge butt quality 1.5%, be warming up to 70 DEG C be hydrolyzed reaction 1h；
(3) a certain amount of sodium hydroxide medicament saturated solution is added again after first time hydrolysis and enters hydrolysis
Device, wherein the additive amount of sodium hydroxide by addition mud organic substance butt quality 1.2%, be warming up to 80 DEG C be hydrolyzed it is anti-
Answer 1h；
(4) after the completion of step 2 hydrolysis, calcium oxide is configured to aqueous suspension and is sent into hydrolysis reactor, at 90 DEG C
Stir 0.5h, wherein the additive amount of calcium oxide by addition sludge butt quality C%.
(5) material after mixing enters equipment for separating liquid from solid, obtains filtrate and filter residue after separation of solid and liquid.Wherein, calcium oxide
Additive amount and experimental result be as follows:
| Test serial number | Calcium oxide (C)/% | Residue water content/% | Degradation effect of organic compound/% | Filtrate protein content/% |
| Experiment 11 | 20 | 35 | 50 | 3.0 |
| Control group 11 | 2 | 72 | 35 | 1.5 |
| Control group 12 | 5 | 63 | 41 | 1.8 |
| Control group 13 | 8 | 57 | 43 | 2.0 |
| Control group 14 | 10 | 50 | 45 | 2.2 |
| Control group 15 | 15 | 40 | 48 | 2.6 |
| Control group 16 | 25 | 34 | 51 | 2.8 |
| Control group 17 | 30 | 33 | 53 | 2.5 |
| Control group 18 | 35 | 32 | 55 | 1.2 |
The used calcium oxide medicament of the present invention, provides sufficient calcium ion, calcium ion is to filter cake during sludge filtration
Formation have important bridging action, the dosage of calcium ion is very few will cause sludge filtration after water content can not be reduced to 40%
Hereinafter, such as control group 11,12,13,14；Dosage is more, and rear end sludge residue amount is caused to increase, and filtrate protein content declines,
Such as control group 18；And calcium oxide additive amount between 15-30% when, residue water content be positively retained at 40% hereinafter, organic matter drop
Solution rate is positively retained between 40-60%.In addition, when calcium oxide additive amount is 20%, effect is most under the process conditions of experiment 11
It is good.In addition, calcium ion is important moderate-element needed for plant, the addition of calcium ion makes sludge residue have excellent soil tune
Function is managed, and the element of plant shortage can be supplemented.
The embodiments of the present invention have been described in detail above, but content is only the preferred embodiment of the present invention,
It is not intended to limit the invention.All any modification, equivalent replacement or improvement etc. made in application range of the invention, should all
It is included within protection scope of the present invention.
Claims (10)
1. a kind of method of lower temperature thermokalite resolution process activated sludge, it is characterised in that: to activated sludge at 70-90 DEG C
Middle substep is added highly basic and reaction is hydrolyzed, and calcium oxide then is added or calcium hydroxide is reacted, and is finally separated by solid-liquid separation and obtains
Filtrate and filter residue.
2. a kind of method of lower temperature thermokalite resolution process activated sludge according to claim 1, it is characterised in that: institute
It states highly basic to be added in two portions in activated sludge, and first time highly basic additive amount is with the mass ratio of second of highly basic additive amount
0.625-3.75:1.
3. a kind of method of lower temperature thermokalite resolution process activated sludge according to claim 2, it is characterised in that: the
OH in the highly basic being once added-Additive amount be sludge butt quality 0.425-1.275%, OH in second highly basic being added-
Additive amount be sludge butt quality 0.34-0.68%.
4. a kind of method of lower temperature thermokalite resolution process activated sludge according to claim 2, it is characterised in that: the
Hydrolysis reacts 1-2h at 70-80 DEG C, and second of hydrolysis reacts 1-2h at 80-90 DEG C.
5. a kind of method of lower temperature thermokalite resolution process activated sludge according to claim 1, it is characterised in that: institute
Stating highly basic can be used sodium hydroxide or potassium hydroxide.
6. a kind of method of lower temperature thermokalite resolution process activated sludge according to claim 5, it is characterised in that: institute
Highly basic is stated using sodium hydroxide, and the first time sodium hydroxide additive amount is the 1-3% of sludge butt quality, second of hydrogen-oxygen
Change the 0.8-1.6% that sodium additive amount is sludge butt quality.
7. a kind of method of lower temperature thermokalite resolution process activated sludge according to claim 6, it is characterised in that: the
The total addition level of sodium hydroxide and second of sodium hydroxide is the 2.2-3.4% of sludge butt quality, and first time hydrogen-oxygen
The ratio for changing sodium and second of sodium hydroxide additive amount is 0.8-2:1.
8. according to claim 1 to a kind of method of lower temperature thermokalite resolution process activated sludge described in 7 one of them,
Be characterized in that: the additive amount of the calcium oxide is the 15%-30% of sludge butt quality, and calcium oxide and hydrolysate are in 80-
0.5-1h is reacted at 90 DEG C.
9. a kind of method of lower temperature thermokalite resolution process activated sludge according to claim 1, it is characterised in that: institute
Stating filtrate can be used for the preparation of Water soluble fertilizer.
10. a kind of method of lower temperature thermokalite resolution process activated sludge according to claim 1, it is characterised in that:
The filter residue can be used for the preparation of organic fertilizer, microbial bacterial agent, afforestation soil or soil conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811069008.8A CN109095751B (en) | 2018-09-13 | 2018-09-13 | Method for treating activated sludge through lower-temperature thermokalite decomposition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811069008.8A CN109095751B (en) | 2018-09-13 | 2018-09-13 | Method for treating activated sludge through lower-temperature thermokalite decomposition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109095751A true CN109095751A (en) | 2018-12-28 |
| CN109095751B CN109095751B (en) | 2021-08-03 |
Family
ID=64866260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811069008.8A Active CN109095751B (en) | 2018-09-13 | 2018-09-13 | Method for treating activated sludge through lower-temperature thermokalite decomposition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109095751B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110117148A (en) * | 2019-05-24 | 2019-08-13 | 苏州达道环保科技有限公司 | A kind of the low temperature thermokalite digestion procedure and its reaction unit of sewage plant biochemical sludge |
| CN111217650A (en) * | 2020-01-16 | 2020-06-02 | 北海宝农农业科技有限公司 | Method for producing water-soluble fertilizer by using shells |
| CN112624567A (en) * | 2020-12-30 | 2021-04-09 | 四川省生态环境科学研究院 | Alkaline disinfection synergistic treatment method for medical sludge |
| CN112661366A (en) * | 2020-12-22 | 2021-04-16 | 湖南军信环保股份有限公司 | Method and system for cooperative sludge dewatering treatment of aged leachate of refuse landfill |
| CN112811764A (en) * | 2021-01-15 | 2021-05-18 | 河南中中中环保设备有限公司 | High-temperature high-pressure cracking treatment process based on sludge organic matter |
| WO2022048206A1 (en) * | 2020-09-01 | 2022-03-10 | 浙江湖州金洁水务股份有限公司 | Method for extracting cod from excess sludge |
| CN114735911A (en) * | 2022-03-23 | 2022-07-12 | 东华工程科技股份有限公司 | Method for in-situ resource utilization of excess sludge in chemical industrial park |
| CN114772886A (en) * | 2022-03-23 | 2022-07-22 | 东华工程科技股份有限公司 | Method for full-scale denitrification and denitrification of excess sludge |
| CN115215703A (en) * | 2022-07-28 | 2022-10-21 | 无锡国联环保科技股份有限公司 | Soil conditioner based on dried sludge and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103708696A (en) * | 2013-12-20 | 2014-04-09 | 华南理工大学 | Method for fast producing methane by utilizing excess sludge |
| CN105396862A (en) * | 2015-11-09 | 2016-03-16 | 天津市裕川环境科技有限公司 | Energy regeneration method for solid organic waste alkaline thermal hydrolysis supernate |
| WO2016039667A1 (en) * | 2014-09-09 | 2016-03-17 | Владимир Владимирович ЮРОВ | Method for treating hydroxide sludges at waterworks |
-
2018
- 2018-09-13 CN CN201811069008.8A patent/CN109095751B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103708696A (en) * | 2013-12-20 | 2014-04-09 | 华南理工大学 | Method for fast producing methane by utilizing excess sludge |
| WO2016039667A1 (en) * | 2014-09-09 | 2016-03-17 | Владимир Владимирович ЮРОВ | Method for treating hydroxide sludges at waterworks |
| CN105396862A (en) * | 2015-11-09 | 2016-03-16 | 天津市裕川环境科技有限公司 | Energy regeneration method for solid organic waste alkaline thermal hydrolysis supernate |
Non-Patent Citations (1)
| Title |
|---|
| 陈蓓蓓: "碱热处理破解污泥效果及脱水性能研究", 《中国优秀硕士学位论文全文数据库 工程科技1辑》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110117148A (en) * | 2019-05-24 | 2019-08-13 | 苏州达道环保科技有限公司 | A kind of the low temperature thermokalite digestion procedure and its reaction unit of sewage plant biochemical sludge |
| CN111217650A (en) * | 2020-01-16 | 2020-06-02 | 北海宝农农业科技有限公司 | Method for producing water-soluble fertilizer by using shells |
| WO2022048206A1 (en) * | 2020-09-01 | 2022-03-10 | 浙江湖州金洁水务股份有限公司 | Method for extracting cod from excess sludge |
| CN112661366A (en) * | 2020-12-22 | 2021-04-16 | 湖南军信环保股份有限公司 | Method and system for cooperative sludge dewatering treatment of aged leachate of refuse landfill |
| CN112661366B (en) * | 2020-12-22 | 2022-07-05 | 湖南军信环保股份有限公司 | Method and system for cooperative sludge dewatering treatment of aged leachate of refuse landfill |
| CN112624567A (en) * | 2020-12-30 | 2021-04-09 | 四川省生态环境科学研究院 | Alkaline disinfection synergistic treatment method for medical sludge |
| CN112811764A (en) * | 2021-01-15 | 2021-05-18 | 河南中中中环保设备有限公司 | High-temperature high-pressure cracking treatment process based on sludge organic matter |
| CN114735911A (en) * | 2022-03-23 | 2022-07-12 | 东华工程科技股份有限公司 | Method for in-situ resource utilization of excess sludge in chemical industrial park |
| CN114772886A (en) * | 2022-03-23 | 2022-07-22 | 东华工程科技股份有限公司 | Method for full-scale denitrification and denitrification of excess sludge |
| CN115215703A (en) * | 2022-07-28 | 2022-10-21 | 无锡国联环保科技股份有限公司 | Soil conditioner based on dried sludge and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109095751B (en) | 2021-08-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109095751A (en) | A kind of method of lower temperature thermokalite resolution process activated sludge | |
| Lai et al. | Enzyme activities in a sandy soil amended with sewage sludge and coal fly ash | |
| CN101508603B (en) | High-speed composting process and apparatus | |
| CN102633414B (en) | Method for treating sludge and extracting organic substances by using microwave | |
| CN101659572B (en) | Method for producing fertilizer by utilizing mud and plant straws | |
| CN103755400A (en) | Method for preparing mineral organic fertilizer by using surplus sludge in municipal sewage plants | |
| CN109205971A (en) | A kind of livestock and poultry feces integrated treatment and the device utilized | |
| CN107500497A (en) | The processing method and its system of black and odorous water sludge | |
| CN104150731A (en) | Combined biochemical and physicochemical method for stabilizing heavy metals in city sludge | |
| CN105967436A (en) | Method for biodegradation of organic phosphorus pesticide wastewater | |
| CN105948457A (en) | Compounded sludge dewatering conditioner and application method thereof | |
| CN109851451A (en) | A kind of 80 percent sludge of moisture content production organic compound fertilizer and manufacturing method | |
| CN110395860B (en) | Sludge recycling treatment method and system | |
| CN104071902B (en) | Method for treating household wastewater | |
| CN108456017A (en) | A method of the general waste of processing is cooperateed with probiotics using earthworm, plant | |
| CN106732428A (en) | A kind of absorption of drinking water heavy metal depth removal brews agent | |
| CN104355488A (en) | Domestic sewage treatment method and domestic sewage treatment device | |
| KR100785849B1 (en) | Manufacture methods of fertilizer about organic waste in excrements of livestock | |
| EP3630705B1 (en) | A method for conversion of poultry manure | |
| CN103723866A (en) | Method for recycling nitrogen and phosphorus from anaerobic fermentation liquid | |
| CN106186617B (en) | A kind of medicament and processing method handling municipal sludge | |
| CN109134003A (en) | A kind of processing technology using municipal sludge production cream fertilizer base fluid | |
| CN204281502U (en) | Waste disposal plant | |
| CN105000985A (en) | Producing method of cottonseed meal soil repairing adhesives | |
| JP2622799B2 (en) | Method of producing useful substances from waste |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |