CN110054394A - A method of improving thickened sludge dewatering - Google Patents
A method of improving thickened sludge dewatering Download PDFInfo
- Publication number
- CN110054394A CN110054394A CN201910374075.9A CN201910374075A CN110054394A CN 110054394 A CN110054394 A CN 110054394A CN 201910374075 A CN201910374075 A CN 201910374075A CN 110054394 A CN110054394 A CN 110054394A
- Authority
- CN
- China
- Prior art keywords
- sludge
- added
- dehydration
- sludge dewatering
- improving
- 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.)
- Pending
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
- C02F11/02—Biological treatment
-
- 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
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
-
- 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
- C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
-
- 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
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- 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
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
-
- 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
- C02F11/148—Combined use of inorganic and organic substances, being added in the same treatment step
-
- 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
- C02F2303/02—Odour removal or prevention of malodour
-
- 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
- C02F2303/04—Disinfection
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of methods for improving thickened sludge dewatering, are related to sludge dewatering technical field, including a, sulfuric acid are added into sludge, and the PH of conditioning of mud is 3-3.5, and flocculant is then added into sludge, mud granule is made to flocculate；B, surfactant is added, stirs at low speed 7-9min, hydrogen peroxide mixed solution is then added, after aoxidizing 34-36min, level-one dehydration is completed using vacuum filtration machine to sludge；C, it under the conditions of 33-35 °C, completes that hydrolysis acidification bacterium is added in the sludge of level-one dehydration into step b, is warming up under the conditions of 53-55 °C, acetogen and methanogen is added, the organic substance in sludge of degrading adds quick lime and walnut shell later；D, the sludge in step c is handled using ultrasonic wave, the power of ultrasonic wave is 11.5-12W/L, ultrasonic time 125-130s, acoustic density 0.14-0.15W/mL, sludge to be drained off after the completion of conditioning is delivered to centrifugal dehydrator and completes second level dehydration, completes the dehydration of sludge.
Description
Technical field
The present invention relates to sludge dewatering technical fields, more particularly to a kind of method for improving thickened sludge dewatering.
Background technique
The dehydration of thickened sludge is always global problem, and especially Industrial Wastewater Treatment generates in thickened sludge containing big
Organic matter is measured, hydrophily is strong, in conjunction with water content height, carries out machine using plate and frame filter press, belt type dewaterer, vacuum hydroextractor etc.
Rate of water loss is slow when tool is dehydrated, and moisture content of the cake is high, and effect is generally not satisfactory, and sludge specific resistance is high, and rate of water loss is slow.
Summary of the invention
The technical problem to be solved by the present invention is to how reduce sludge specific resistance, dewatering is improved.
In order to solve the above technical problems, the present invention provides a kind of method for improving thickened sludge dewatering, feature
It is, comprising the following steps:
A, sulfuric acid is added into sludge, the PH of conditioning of mud is 3-3.5, flocculant is then added into sludge, and quickly stir,
It is sufficiently mixed sludge and flocculant, mud granule is made to flocculate；
B, surfactant is added, stirs at low speed 7-9min, hydrogen peroxide mixed solution is then added, after aoxidizing 34-36min,
Level-one dehydration is completed using vacuum filtration machine to sludge；
C, it under the conditions of 33-35 °C, completes that hydrolysis acidification bacterium is added in the sludge of level-one dehydration into step b, is warming up to 53-
Under the conditions of 55 °C, acetogen and methanogen is added, the organic substance in sludge of degrading adds quick lime and walnut later
Shell adjusts to pH value and is greater than 11；
D, the sludge in step c is handled using ultrasonic wave, the power of ultrasonic wave is 11.5-12W/L, and ultrasonic time is
It is complete to be delivered to centrifugal dehydrator by 125-130s, acoustic density 0.14-0.15W/mL for sludge to be drained off after the completion of conditioning
At second level dehydration, the dehydration of sludge is completed.
The technical solution that the present invention further limits is: in the step b, adding hydrolysis acidification bacterium, acetogen and production
The amount of methane backeria is 7.8-8.1mg/L.
Further, in the step b, the surfactant be hexadecyltrimethylammonium chloride and alkyl glycosides,
Wherein, the dosage of the hexadecyltrimethylammonium chloride is 45.5 mg/g TS, and the dosage of the alkyl glycosides is
36.5 mg/g TS。
The preceding method, in the step b, hydrogen peroxide mixed solution includes Fe2+ and hydrogen peroxide, and Fe2+ and dioxygen
The ratio of water is 2:7.
The preceding method, the flocculant include cationic PAM and inorganic flocculating agent, the cationic PAM and
The content ratio of inorganic flocculating agent is 1:4, and the cationic PAM is cationic polyacrylamide.
The preceding method, the inorganic flocculating agent include include aluminium salt, molysite, aluminium polychloride and poly-ferric chloride,
And in the step a, temperature is 20-25 °C when adding flocculant.
The preceding method in the step a, when stirring, is stirred with the speed that mixing speed is 85-100 revs/min
90s, then 200s is stirred with 35-45 revs/min of speed.
The preceding method, in step b, the content ratio of the quick lime and walnut shell and sludge is 3:5, wherein walnut
The partial size of shell is less than 0.2mm.
The beneficial effects of the present invention are:
(1) in the present invention under the conditions of 33-35 °C, hydrolysis acidification bacterium is added, acetogen and production are added under the conditions of 53-55 °C
Methane backeria, the organic substance in the sludge that can effectively degrade, to realize the stabilisation of sludge, in addition, anaerobic digestion can also be with
The added amount of chemical of subsequent processing is reduced, and promotes the improvement of sludge dewatering effect, sludge specific resistance can be made to be down to 8.9 × 1011
M/kg, moisture percentage in sewage sludge are down to 76.4%, have preferable sludge dewatering effect；
(2) on the one hand the present invention can kill the pathogenic microorganism in sludge by adding quick lime, and it is dirty to make that treated
Mud safe odorless does not return again to mud, and sludge and lime can on the other hand combined and generates calcium hydroxide, pH maintains 12
More than, it can kill the pathogenic microorganism in sludge, it is heavy metal-passivated and further reduce stink, while can be because of exothermic reaction
The moisture in sludge is further discharged, reduces moisture percentage in sewage sludge, but the added amount of chemical of lime treatment is excessive, will increase sludge
Volume；
(3) present invention, which is added, can do framework material to walnut shell, and when the content ratio of quick lime and walnut shell and sludge is 3:
5, and the partial size of walnut shell be less than 0.2mm when, moisture content of the cake by 72.34% that former mud filters be down to conditioning after 66.23%, together
When sludge specific resistance by 8.9 × 1011M/kg is reduced to 5.2 × 10 after conditioning11M/kg, in addition, cost is relatively low for walnut shell, save at
This；
(4) when the present invention utilizes ultrasonication sludge, the cell wall of microorganism in sludge can be destroyed, discharges intracellular matter,
Its main function mechanism is ultrasonic cavitation, pyrolysis harmony cause free radical mechanism, and the present invention sets the power of ultrasonic wave
It is set to 11.5-12W/L, ultrasonic time 125-130s, acoustic density 0.14-0.15W/mL can achieve and break to sludge
Solution degree is maximum.
Specific embodiment
Embodiment: a method of improving thickened sludge dewatering, comprising the following steps:
A, sulfuric acid is added into sludge, the PH of conditioning of mud is 3-3.5, and the present embodiment is preferably that pH value is equal to 3.2, then to dirt
Flocculant is added in mud, and is quickly stirred, and is sufficiently mixed sludge and flocculant, mud granule is made to flocculate；
B, surfactant is added, stirs at low speed 7-9min, hydrogen peroxide mixed solution is then added, after aoxidizing 34-36min,
Level-one dehydration is completed using vacuum filtration machine to sludge；
C, it under the conditions of 33-35 °C, completes that hydrolysis acidification bacterium is added in the sludge of level-one dehydration into step b, is warming up to 53-
Under the conditions of 55 °C, acetogen and methanogen is added, the organic substance in sludge of degrading adds quick lime and walnut later
Shell adjusts to pH value and is greater than 11, wherein the content of quick lime and walnut shell and sludge ratio is 3:5, wherein the partial size of walnut shell
Less than 0.2mm, organic substance in the sludge that can effectively degrade, so that the stabilisation of sludge is realized, in addition, anaerobic digestion can also
To reduce the added amount of chemical of subsequent processing, and promote the improvement of sludge dewatering effect, the present invention can make moisture content of the cake
By former mud filters 72.34% be down to after conditioning 66.23%, while sludge specific resistance is by 8.9 × 1011After m/kg is reduced to conditioning
5.2×1011m/kg。
D, the sludge in step c is handled using ultrasonic wave, the power of ultrasonic wave is 11.5-12W/L, ultrasonic time
For 125-130s, acoustic density 0.14-0.15W/mL, the sludge to be drained off after the completion of conditioning is delivered to centrifugal dehydrator
Second level dehydration is completed, microorganism in sludge can be destroyed when the present invention utilizes ultrasonication sludge by completing the dehydration of sludge
Cell wall, discharge intracellular matter, main function mechanism be ultrasonic cavitation, pyrolysis harmony cause free radical machine
The power setting of ultrasonic wave is 11.5-12W/L, ultrasonic time 125-130s, acoustic density 0.14- by reason, the present invention
0.15W/mL can achieve maximum to the degree of cracking of sludge.
Wherein, in step c, the amount for adding hydrolysis acidification bacterium, acetogen and methanogen is 7.8-8.1mg/L, surface
Activating agent is hexadecyltrimethylammonium chloride and alkyl glycosides, wherein the dosage of hexadecyltrimethylammonium chloride is
45.5 mg/g TS, the dosage of alkyl glycosides are 36.5 mg/g TS.
Specifically, hydrogen peroxide mixed solution includes Fe in step b2+And hydrogen peroxide, and Fe2+Ratio with hydrogen peroxide is 2:
7。
Flocculant includes cationic PAM and inorganic flocculating agent, and the content ratio of cationic PAM and inorganic flocculating agent is 1:
4, cationic PAM are cationic polyacrylamide, and inorganic flocculating agent includes including aluminium salt, molysite, aluminium polychloride and polymerization
Iron chloride, and in step a, temperature is 20-25 °C when adding flocculant, is 85-100 with mixing speed when stirring in step a
Rev/min speed stir 90s, then 200s is stirred with 35-45 revs/min of speed.
In addition to the implementation, the present invention can also have other embodiments.It is all to use equivalent substitution or equivalent transformation shape
At technical solution, fall within the scope of protection required by the present invention.
Claims (8)
1. a kind of method for improving thickened sludge dewatering, which comprises the following steps:
A, sulfuric acid is added into sludge, the PH of conditioning of mud is 3-3.5, flocculant is then added into sludge, and quickly stir,
It is sufficiently mixed sludge and flocculant, mud granule is made to flocculate；
B, surfactant is added, stirs at low speed 7-9min, hydrogen peroxide mixed solution is then added, after aoxidizing 34-36min,
Level-one dehydration is completed using vacuum filtration machine to sludge；
C, it under the conditions of 33-35 °C, completes that hydrolysis acidification bacterium is added in the sludge of level-one dehydration into step b, is warming up to 53-
Under the conditions of 55 °C, acetogen and methanogen is added, the organic substance in sludge of degrading adds quick lime and walnut later
Shell adjusts to pH value and is greater than 11；
D, the sludge in step c is handled using ultrasonic wave, the power of ultrasonic wave is 11.5-12W/L, and ultrasonic time is
It is complete to be delivered to centrifugal dehydrator by 125-130s, acoustic density 0.14-0.15W/mL for sludge to be drained off after the completion of conditioning
At second level dehydration, the dehydration of sludge is completed.
2. a kind of method for improving thickened sludge dewatering according to claim 1, it is characterised in that: the step b
In, the amount for adding hydrolysis acidification bacterium, acetogen and methanogen is 7.8-8.1mg/L.
3. a kind of method for improving thickened sludge dewatering according to claim 1, it is characterised in that: the step b
In, the surfactant is hexadecyltrimethylammonium chloride and alkyl glycosides, wherein the cetyl trimethyl chlorination
The dosage of ammonium is 45.5 mg/g TS, and the dosage of the alkyl glycosides is 36.5 mg/g TS.
4. a kind of method for improving thickened sludge dewatering according to claim 1, it is characterised in that: the step b
In, hydrogen peroxide mixed solution includes Fe2+And hydrogen peroxide, and Fe2+Ratio with hydrogen peroxide is 2:7.
5. a kind of method for improving thickened sludge dewatering according to claim 1, it is characterised in that: the flocculant
Including cationic PAM and inorganic flocculating agent, the content ratio of the cationic PAM and inorganic flocculating agent is 1:4, the sun from
Sub- property PAM is cationic polyacrylamide.
6. a kind of method for improving thickened sludge dewatering according to claim 4, it is characterised in that: the inorganic wadding
Solidifying agent is including including aluminium salt, molysite, aluminium polychloride and poly-ferric chloride, and in the step a, and temperature is when adding flocculant
20-25°C 。
7. a kind of method for improving thickened sludge dewatering according to claim 1, it is characterised in that: the step a
In, when stirring, 90s is stirred with the speed that mixing speed is 85-100 revs/min, then stir with 35-45 revs/min of speed
200s。
8. a kind of method for improving thickened sludge dewatering according to claim 1, it is characterised in that: in step b, institute
The content ratio for stating quick lime and walnut shell and sludge is 3:5, wherein the partial size of walnut shell is less than 0.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910374075.9A CN110054394A (en) | 2019-05-07 | 2019-05-07 | A method of improving thickened sludge dewatering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910374075.9A CN110054394A (en) | 2019-05-07 | 2019-05-07 | A method of improving thickened sludge dewatering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110054394A true CN110054394A (en) | 2019-07-26 |
Family
ID=67322456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910374075.9A Pending CN110054394A (en) | 2019-05-07 | 2019-05-07 | A method of improving thickened sludge dewatering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110054394A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110937772A (en) * | 2019-12-11 | 2020-03-31 | 中冶华天工程技术有限公司 | Method for separating organic/inorganic components from sludge |
| CN113024079A (en) * | 2021-04-20 | 2021-06-25 | 惠州市鑫隆环境服务有限公司 | Sludge conditioning system and method thereof |
| CN115231781A (en) * | 2022-08-08 | 2022-10-25 | 阳城县安阳污水处理有限公司 | A sewage treatment process with low sludge yield |
| CN116002950A (en) * | 2023-02-09 | 2023-04-25 | 浙江工业大学 | A method for promoting sludge dewatering |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002361281A (en) * | 2001-06-08 | 2002-12-17 | Ebara Corp | Method and apparatus for reducing quantity of excessive sludge in biological treatment of organic contaminated water |
| CN1668539A (en) * | 2002-08-05 | 2005-09-14 | Otv股份有限公司 | Method and facility for treatment of sludge derived from biological water purification facilities |
| CN102910793A (en) * | 2012-11-12 | 2013-02-06 | 北京师范大学 | Joint-conditioning dehydration method for sludge |
| CN103030259A (en) * | 2013-01-07 | 2013-04-10 | 北京科技大学 | Method for conditioning and dehydrating residual sludge |
| CN103613262A (en) * | 2013-12-13 | 2014-03-05 | 广西大学 | Method and equipment for processing industrial sludge through ultrasonic wave in combination with Fenton reaction and anaerobic digestion |
| CN104891779A (en) * | 2015-06-29 | 2015-09-09 | 北京工业大学 | Combination type efficient sludge dewatering conditioning method |
| CN105461183A (en) * | 2015-12-31 | 2016-04-06 | 浙江清华长三角研究院 | Treatment method for excess activated sludge in AOX pollution |
| CN106430895A (en) * | 2016-08-26 | 2017-02-22 | 长兴县夹浦污水处理有限公司 | UASB sludge reduction treatment device |
| CN106673383A (en) * | 2016-12-30 | 2017-05-17 | 北京普利科林环境科技有限公司 | Method for strengthening dehydration of petrochemical residual sludge based on physical and chemical combined pretreatment |
-
2019
- 2019-05-07 CN CN201910374075.9A patent/CN110054394A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002361281A (en) * | 2001-06-08 | 2002-12-17 | Ebara Corp | Method and apparatus for reducing quantity of excessive sludge in biological treatment of organic contaminated water |
| CN1668539A (en) * | 2002-08-05 | 2005-09-14 | Otv股份有限公司 | Method and facility for treatment of sludge derived from biological water purification facilities |
| CN102910793A (en) * | 2012-11-12 | 2013-02-06 | 北京师范大学 | Joint-conditioning dehydration method for sludge |
| CN103030259A (en) * | 2013-01-07 | 2013-04-10 | 北京科技大学 | Method for conditioning and dehydrating residual sludge |
| CN103613262A (en) * | 2013-12-13 | 2014-03-05 | 广西大学 | Method and equipment for processing industrial sludge through ultrasonic wave in combination with Fenton reaction and anaerobic digestion |
| CN104891779A (en) * | 2015-06-29 | 2015-09-09 | 北京工业大学 | Combination type efficient sludge dewatering conditioning method |
| CN105461183A (en) * | 2015-12-31 | 2016-04-06 | 浙江清华长三角研究院 | Treatment method for excess activated sludge in AOX pollution |
| CN106430895A (en) * | 2016-08-26 | 2017-02-22 | 长兴县夹浦污水处理有限公司 | UASB sludge reduction treatment device |
| CN106673383A (en) * | 2016-12-30 | 2017-05-17 | 北京普利科林环境科技有限公司 | Method for strengthening dehydration of petrochemical residual sludge based on physical and chemical combined pretreatment |
Non-Patent Citations (2)
| Title |
|---|
| 台明青: "《基于响应曲面法（RSM）优化污泥脱水性能研究》", 31 March 2019, 武汉大学出版社 * |
| 张希衡: "《废水治理工程》", 31 May 1987, 冶金工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110937772A (en) * | 2019-12-11 | 2020-03-31 | 中冶华天工程技术有限公司 | Method for separating organic/inorganic components from sludge |
| CN113024079A (en) * | 2021-04-20 | 2021-06-25 | 惠州市鑫隆环境服务有限公司 | Sludge conditioning system and method thereof |
| CN115231781A (en) * | 2022-08-08 | 2022-10-25 | 阳城县安阳污水处理有限公司 | A sewage treatment process with low sludge yield |
| CN116002950A (en) * | 2023-02-09 | 2023-04-25 | 浙江工业大学 | A method for promoting sludge dewatering |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhou et al. | A review on sludge conditioning by sludge pre-treatment with a focus on advanced oxidation | |
| CN110054394A (en) | A method of improving thickened sludge dewatering | |
| CN101985386B (en) | Conditioning agent and conditioning method for domestic sludge dewatering | |
| CN103864266B (en) | A method for recycling waste paper and papermaking wastewater and sludge | |
| CN108083609A (en) | A kind of method that municipal sludge is nursed one's health by composite reagent | |
| CN104193127A (en) | Method for treating surplus sludge produced after biological treatment of wastewater | |
| CN102583684B (en) | Method for preparing flocculating agent from paper mill sludge | |
| CN105753148B (en) | A kind of powdery bio-carrier and its sewage water treatment method of sludge superelevation amount emission reduction | |
| CN102464440B (en) | Method for carrying out decrement on physicochemical and biochemical mixed sludge | |
| CN101531417B (en) | Inorganic composite floculant, its preparation method and use in treating high-concentration dye-printing desizing waste water | |
| CN106365412A (en) | Method for conditioning urban sewage plant excess sludge through ultrasound and Fenton cooperation | |
| CN109809631A (en) | A method and system for improving phosphorus recovery efficiency of biogas slurry in pig farms | |
| JP2022517256A (en) | Controllable ・ Polysaccharide polymer-containing sewage decomposition treatment method by synergistic action of OH free radicals | |
| CN110117149A (en) | A kind of Opsonizing method of catalysis oxidation type sludge conditioner and sludge | |
| CN108439765A (en) | A method of strengthening lysozyme and improves sludge | |
| AU2010320182B2 (en) | Flocculating agent starting material using brown algae as starting material, flocculating agent using said starting material, preparation method for said flocculating agent, and purification method using said flocculating agent | |
| CN102211804B (en) | Preparation method of starch-based flocculating agent | |
| CN104098201B (en) | A kind of starch wastewater treatment method | |
| CN115448554B (en) | Method for preparing high-heat-value mud cake by using high-water-content organic sludge | |
| CN104743750A (en) | Method for treating pulp papermaking industrial wastewater | |
| CN107032567B (en) | Method for deodorizing and reducing municipal sludge | |
| CN105271625B (en) | A kind of clean preparation method improving the residual active sludge energy resource rate of recovery | |
| CN110467332A (en) | A kind of efficient sludge conditioning and dewatering | |
| CN107032568B (en) | Municipal sludge deodorization decrement processing system | |
| CN110606649B (en) | Sludge conditioning and dewatering method and device |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190726 |