CN106746482A - The compound conditioner of sludge dewatering and mud dewatering method - Google Patents
The compound conditioner of sludge dewatering and mud dewatering method Download PDFInfo
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- CN106746482A CN106746482A CN201710039176.1A CN201710039176A CN106746482A CN 106746482 A CN106746482 A CN 106746482A CN 201710039176 A CN201710039176 A CN 201710039176A CN 106746482 A CN106746482 A CN 106746482A
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- sludge
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- dewatering
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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
- 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
- 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
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
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- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention provides a kind of compound conditioner of sludge dewatering and mud dewatering method, is related to sludge dewatering treatment technical field.The compound conditioner of sludge dewatering of the present invention includes organic coagulants, inorganic coagulant, auxiliary agent, and in sludge dehydration process, the addition of organic coagulants is the 0.2%~1.5% of mud dry weight；The addition of inorganic coagulant is the 10%~27% of mud dry weight；The addition of auxiliary agent is the 0.5%~1% of mud dry weight, the present invention is using organic coagulants, inorganic coagulant, auxiliary agent composition compound type sludge dehydrating and conditioning agent, each composition addition is few, dosage is small when the compound type sludge dehydrating and conditioning agent is for sludge dewatering, nurse one's health process is simple, is widely used in the dewater treatment of sludge.
Description
Technical field
The present invention relates to sludge dewatering treatment technical field, and in particular to a kind of compound conditioner of sludge dewatering and sludge dewatering
Method.
Background technology
Deeply dehydrating sludge is widely used in the fields such as municipal administration, chemical industry as a kind of effective sludge dewatering volume reduction technology
Sludge dewatering engineering.So-called dehydration, exactly further removes the moisture in sludge using mechanism, leads to before mechanical dehydration
Crossing addition conditioner and be modified can improve sludge dewatering efficiency.Due to the special flocculation structure and highly-hydrophilic of mud granule
Property, make its moisture for including be difficult to be removed, moisture is up to 95%~97% in sludge, causes sludge to have huge appearance
Product, this brings very big difficulty to the subsequent treatment disposal of sludge.So, when sludge is processed, it is necessary to first remove the water in sludge
Go, to reduce the volume of sludge, mitigate the weight of sludge, so will largely reduce the work to Treatment of Sludge
Intensity.
Conventional deeply dehydrating sludge conditioner is mostly ferric trichloride+lime at present, is filled into mechanical dehydration after conditioning
Putting carries out deep dehydration.
But, the solid powder addition such as lime is big in current deeply dehydrating sludge conditioner, is easily caused environmental pollution, and
The solid powders such as addition lime can cause total increment, influence sludge quality, reduce sludge calorific value, content of organic matter etc., and then
The recyclings such as influence sludge follow-up carbonization, compost, are unfavorable for the extensive use of deep sludge dewatering process.
The content of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of compound conditioner of sludge dewatering and mud dewatering method, solution
Determined sludge dewatering in the prior art solid powder addition it is big, increase-volume is serious, and under sludge calorific value after dewater treatment
The technical problem that drop, the content of organic matter decline.
To realize object above, technical scheme is achieved by the following technical programs：
A kind of compound conditioner of sludge dewatering, including organic coagulants, inorganic coagulant, auxiliary agent, in sludge dehydration process,
The addition of organic coagulants is the 0.2%~1.5% of mud dry weight；The addition of inorganic coagulant is the 10% of mud dry weight
~27%；The addition of auxiliary agent is the 0.5%~1% of mud dry weight.
Preferably, the organic coagulants are PDDA, dimethyl diallyl ammonium chloride, third
At least one in acrylamide copolymer, PAH.
Preferably, the inorganic coagulant is at least one in aluminium salt, molysite.
Preferably, the aluminium salt is aluminium chloride, aluminum sulfate, alum, sodium aluminate, aluminium polychloride, polyaluminium sulfate
In at least one.
Preferably, the molysite be ferric trichloride, ferrous sulfate, ferric sulfate, poly-ferric chloride, bodied ferric sulfate in extremely
Few one kind.
Preferably, auxiliary agent is stated for neopelex, sodium n-alkylbenzenesulfonate, TX-10 emulsifying agents, chitosan salt
At least one in hydrochlorate, chitosan quaternary ammonium salt, chitosan lactate, glutamate, polyvinyl alcohol.
A kind of mud dewatering method of the compound conditioner of utilization sludge dewatering, comprises the following steps：
The pending sludge of S1, preparation, calculating mud dry weight is M, and organic coagulants, inorganic coagulation are weighed according to part by weight
Agent, the inorganic coagulant of organic coagulants and 30~70% is well mixed, and obtains built agent；
In S2, the sludge for adding step S1 to prepare built agent, after stirring, the remaining inorganic coagulant of addition, stirring 5~
15min, adds auxiliary agent, stirs 5~15min, the sludge after being processed；
S3, by after treatment sludge input filter press carry out mechanical dehydration.
Preferably, the pH of the sludge after being processed described in step S2 is 6.8~7.2.
Preferably, the filter plate area of filter press described in step S3 is 0.28~1m2, feed pressure≤1MPa, squeeze pressure
≤4.5MPa。
Preferably, mixing time described in step S2 is 10min.
The present invention provides a kind of compound conditioner of sludge dewatering and mud dewatering method, and advantage exists compared with prior art
In：
The present invention is using organic coagulants, inorganic coagulant, auxiliary agent composition compound type sludge dehydrating and conditioning agent, each composition addition
Few, dosage is small when the compound type sludge dehydrating and conditioning agent is for sludge dewatering, nurse one's health process is simple, coordinates filter press machinery de-
Water is acted on, and moisture percentage in sewage sludge can be made to be down to less than 60%, pH between 6~7, ordorless, easy to use, environment-friendly, it is to avoid passed
Pulvis is added in system method, in the absence of increase-volume problem, does not influence mud cake following resourceization to process disposal, be widely used in sludge
Dewater treatment.
The synergy of the compound conditioner that the present invention is made up of organic coagulants, inorganic coagulant, auxiliary agent, with list
One conditioner is compared, except the bridge formation with general high-molecular coagulant adopting, volume sweep function in addition to, also because in its strand positive charge it is close
Spend high and there is great charge neutrality ability, absorption charge neutrality and suction of the compound conditioner to the colloidal substance in water body
Attached bridging action enhancing, while it produces strong absorption, net to catch, builds bridge etc. and acting on huge molecular structure；This is compound
Conditioner can be effectively improved dewatering performance of sludge, and sludge calorific value, the content of organic matter will not be reduced, and not influence the follow-up money of mud cake
Sourceization treatment disposal.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, with reference to the embodiment of the present invention pair
Technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is a part of the invention
Embodiment, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making wound
The every other embodiment obtained under the premise of the property made work, belongs to the scope of protection of the invention.
Embodiment 1：
The compound conditioner of the present embodiment sludge dewatering, including organic coagulants, inorganic coagulant, auxiliary agent, in sludge dewatering
Cheng Zhong, the addition of organic coagulants is the 1% of mud dry weight；The addition of inorganic coagulant is the 17% of mud dry weight；Auxiliary agent
Addition for mud dry weight 1%；
Aluminium salt is aluminium polychloride and polyaluminium sulfate in mass ratio 1 wherein in inorganic coagulant:1 mixture；Inorganic coagulation
Molysite in agent is ferric trichloride and ferric sulfate in mass ratio 1:1 mixture；Auxiliary agent is neopelex and straight chain
Sodium alkyl benzene sulfonate in mass ratio 1:1 mixture；
The present embodiment is comprised the following steps using the mud dewatering method of the compound conditioner of sludge dewatering：
S1, a certain amount of pending solid content of preparation are 4.7% sludge, calculate mud dry weight, are weighed according to part by weight organic mixed
Solidifying agent, inorganic coagulant, the inorganic coagulant of organic coagulants and 41.1% is well mixed, and obtains built agent；
In S2, the sludge for adding step S1 to prepare built agent, after stirring, remaining inorganic coagulant is added, stirs 10min,
Add auxiliary agent, stir 10min, the sludge after process, the pH of sludge is 7；
S3, by after treatment sludge coordinate Special high-voltage plate and frame filter press carry out mechanical dehydration, wherein filter press, filter plate face
Product 0.28m2, mud handling capacity about 0.11m3, press filtration is secondary feeds twice pressing：Once feed 30min, secondary feeds
20min, feed pressure 1MPa；The squeezing time is 35min, maximum squeeze pressure 4.5MPa.
Press filtration is carried out by filter press by above-mentioned press filtration parameter, mud cake shapes not sticky cloth, cachaza average moisture content
59%, pressing filtering liquid pH are 7.
Embodiment 2：
The compound conditioner of the present embodiment sludge dewatering, including organic coagulants, inorganic coagulant, auxiliary agent, in sludge dewatering
Cheng Zhong, the addition of organic coagulants is the 1.4% of mud dry weight；The addition of inorganic coagulant is the 19.5% of mud dry weight；
The addition of auxiliary agent is the 0.5% of mud dry weight；
Aluminium salt is aluminium polychloride and polyaluminium sulfate according to mass ratio 1 wherein in inorganic coagulant:2 mixture；It is inorganic mixed
Molysite in solidifying agent is poly-ferric chloride and bodied ferric sulfate according to mass ratio 3:2 mixture；Auxiliary agent is chitosan hydrochloride
With chitosan quaternary ammonium salt according to mass ratio 1:1 mixture；
The present embodiment is comprised the following steps using the mud dewatering method of the compound conditioner of sludge dewatering：
S1, a certain amount of pending solid content of preparation are 3.5% sludge, calculate mud dry weight, are weighed according to part by weight organic mixed
Solidifying agent, inorganic coagulant, the inorganic coagulant of organic coagulants and 53.8% is well mixed, and obtains built agent；
In S2, the sludge for adding step S1 to prepare built agent, after stirring, remaining inorganic coagulant is added, stirs 10min,
Add auxiliary agent, stir 10min, the sludge after process, the pH of sludge is 7；
S3, by after treatment sludge coordinate Special high-voltage plate and frame filter press carry out mechanical dehydration, wherein filter press, filter plate face
Product 1m2, mud handling capacity about 12m3, press filtration is secondary feeds twice pressing：30min, feed pressure 1MPa are once fed, once
Squeezing time 40min, maximum squeeze pressure 3.3MPa；Secondary feeds 20min, feed pressure 0.8MPa, twice pressing time
30min, maximum squeeze pressure 4.5MPa.
Press filtration is carried out by filter press by above-mentioned press filtration parameter, mud cake shapes not sticky cloth, cachaza average moisture content
53.3%, pressing filtering liquid pH are 7.
Embodiment 3：
The compound conditioner of the present embodiment sludge dewatering, including organic coagulants, inorganic coagulant, auxiliary agent, in sludge dewatering
Cheng Zhong, the addition of organic coagulants is the 1.5% of mud dry weight；The addition of inorganic coagulant is the 27% of mud dry weight；Help
The addition of agent is the 0.8% of mud dry weight；
Aluminium salt is aluminium chloride, aluminum sulfate, alum, sodium aluminate, aluminium polychloride, polyaluminium sulfate wherein in inorganic coagulant
Mixture；In inorganic coagulant molysite be ferric trichloride, ferrous sulfate, ferric sulfate, poly-ferric chloride, bodied ferric sulfate it is mixed
Compound；Auxiliary agent is neopelex, sodium n-alkylbenzenesulfonate, TX-10 emulsifying agents, chitosan hydrochloride, shitosan
Quaternary ammonium salt, chitosan lactate, glutamate, the mixture of polyvinyl alcohol；
The present embodiment is comprised the following steps using the mud dewatering method of the compound conditioner of sludge dewatering：
S1, a certain amount of pending solid content of preparation are 4.5% sludge, calculate mud dry weight, are weighed according to part by weight organic mixed
Solidifying agent, inorganic coagulant, the inorganic coagulant of organic coagulants and 70% is well mixed, and obtains built agent；
In S2, the sludge for adding step S1 to prepare built agent, after stirring, remaining inorganic coagulant is added, stirs 15min,
Add auxiliary agent, stir 15min, the sludge after process, the pH of sludge is 7.2；
S3, by after treatment sludge input filter press carry out mechanical dehydration, wherein filter press, filter plate area 1m2, at sludge
Reason amount about 0.11m3, press filtration is secondary feeds twice pressing：Once feed 30min, secondary feeds 20min, feed pressure 1MPa；
The squeezing time is 35min, maximum squeeze pressure 4.5MPa.
Press filtration is carried out by filter press by above-mentioned press filtration parameter, mud cake shapes not sticky cloth, cachaza average moisture content
59.5%, pressing filtering liquid pH are 7.
Embodiment 4：
The compound conditioner of the present embodiment sludge dewatering, including organic coagulants, inorganic coagulant, auxiliary agent, in sludge dewatering
Cheng Zhong, the addition of organic coagulants is the 0.2% of mud dry weight；The addition of inorganic coagulant is the 10% of mud dry weight；Help
The addition of agent is the 0.6% of mud dry weight；
Aluminium salt is aluminium chloride wherein in inorganic coagulant；Molysite is ferrous sulfate in inorganic coagulant；Auxiliary agent is shitosan paddy ammonia
Hydrochlorate；
The present embodiment is comprised the following steps using the mud dewatering method of the compound conditioner of sludge dewatering：
S1, a certain amount of pending solid content of preparation are 5.0% sludge, calculate mud dry weight, are weighed according to part by weight organic mixed
Solidifying agent, inorganic coagulant, the inorganic coagulant of organic coagulants and 10% is well mixed, and obtains built agent；
In S2, the sludge for adding step S1 to prepare built agent, after stirring, remaining inorganic coagulant is added, stir 5min, then
Addition auxiliary agent, stirring 5min, the sludge after being processed, the pH of sludge is 6.8；
S3, by after treatment sludge coordinate Special high-voltage plate and frame filter press carry out mechanical dehydration, wherein filter press, filter plate face
Product 0.28m2, mud handling capacity about 0.11m3, press filtration is secondary feeds twice pressing：Once feed 30min, secondary feeds
20min, feed pressure 1MPa；The squeezing time is 35min, maximum squeeze pressure 4.5MPa.
Press filtration is carried out by filter press by above-mentioned press filtration parameter, mud cake shapes not sticky cloth, cachaza average moisture content
58.7%, pressing filtering liquid pH are 7.
In sum, the present invention is using organic coagulants, inorganic coagulant, auxiliary agent composition compound type sludge dehydrating and conditioning
Agent, each composition addition is few, and dosage is small when the compound type sludge dehydrating and conditioning agent is for sludge dewatering, nurse one's health process is simple,
Coordinate the effect of filter press mechanical dehydration, moisture percentage in sewage sludge can be made to be down to less than 60%, pH between 6~7, ordorless, user
Just it is, environment-friendly, it is to avoid pulvis is added in conventional method, in the absence of increase-volume problem, do not influence at mud cake following resource treatment
Put, be widely used in the dewater treatment of sludge.
It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although ginseng
The present invention has been described in detail according to previous embodiment, it will be understood by those within the art that：It still can be with
Technical scheme described in foregoing embodiments is modified, or equivalent is carried out to which part technical characteristic；And
These modifications are replaced, and do not make the spirit and model of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution
Enclose.
Claims (10)
1. the compound conditioner of a kind of sludge dewatering, it is characterised in that：Including organic coagulants, inorganic coagulant, auxiliary agent, in dirt
In mud dehydration, the addition of organic coagulants is the 0.2%~1.5% of mud dry weight；The addition of inorganic coagulant is
The 10%~27% of mud dry weight；The addition of auxiliary agent is the 0.5%~1% of mud dry weight.
2. the compound conditioner of sludge dewatering according to claim 1, it is characterised in that：The organic coagulants are poly- two
In methyl diallyl ammonium chloride, dimethyl diallyl ammonium chloride, acrylamide copolymer, PAH extremely
Few one kind.
3. the compound conditioner of sludge dewatering according to claim 1, it is characterised in that：The inorganic coagulant is aluminium
At least one in salt, molysite.
4. the compound conditioner of sludge dewatering according to claim 3, it is characterised in that：The aluminium salt is aluminium chloride, sulphur
At least one in sour aluminium, alum, sodium aluminate, aluminium polychloride, polyaluminium sulfate.
5. the compound conditioner of sludge dewatering according to claim 3, it is characterised in that：The molysite be ferric trichloride,
At least one in ferrous sulfate, ferric sulfate, poly-ferric chloride, bodied ferric sulfate.
6. the compound conditioner of sludge dewatering according to claim 1, it is characterised in that：The auxiliary agent is detergent alkylate
Sodium sulfonate, sodium n-alkylbenzenesulfonate, TX-10 emulsifying agents, chitosan hydrochloride, chitosan quaternary ammonium salt, chitosan lactate, shell
At least one in glycan glutamate, polyvinyl alcohol.
7. the mud dewatering method of the compound conditioner of sludge dewatering described in a kind of utilization claim 1~6, it is characterised in that
Comprise the following steps：
The pending sludge of S1, preparation, calculates mud dry weight, and organic coagulants, inorganic coagulant are weighed according to part by weight, will
Organic coagulants and 30~70% inorganic coagulant are well mixed, obtain built agent；
In S2, the sludge for adding step S1 to prepare built agent, after stirring, the remaining inorganic coagulant of addition, stirring 5~
15min, adds auxiliary agent, stirs 5~15min, the sludge after being processed；
S3, by after treatment sludge input filter press carry out mechanical dehydration.
8. mud dewatering method according to claim 7, it is characterised in that：The pH of sludge after being processed described in step S2 is
6.8~7.2.
9. mud dewatering method according to claim 7, it is characterised in that：The filter plate area of filter press described in step S3 is
0.28~1m2, feed pressure≤1MPa, squeeze pressure≤4.5MPa.
10. mud dewatering method according to claim 7, it is characterised in that：Mixing time described in step S2 is
10min。
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Cited By (13)
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|---|---|---|---|---|
| CN107698130A (en) * | 2017-10-16 | 2018-02-16 | 佛山市蓝叶环保科技有限公司 | A kind of environmentally friendly efficient reactivity sludge dehydrating agent |
| CN108328905A (en) * | 2018-03-21 | 2018-07-27 | 深圳市鸿卓环保科技有限公司 | A kind of sludge dehydration conditioner and its application method |
| CN108409104A (en) * | 2018-04-20 | 2018-08-17 | 东莞市顶盛环保科技有限公司 | A kind of New Type of Sludge Dewatering agent |
| CN108503001A (en) * | 2018-04-09 | 2018-09-07 | 长沙秋点兵信息科技有限公司 | A kind of novel water pollution renovation agent and preparation method thereof |
| CN109179965A (en) * | 2018-11-01 | 2019-01-11 | 中国农业大学 | It is a kind of for compound conditioned dose of sludge high-efficiency dehydration and mud dewatering method |
| CN109592879A (en) * | 2018-11-28 | 2019-04-09 | 湖州智清环保科技有限公司 | Novel organic composite sludge conditioning modifying agent |
| CN109734283A (en) * | 2018-12-05 | 2019-05-10 | 中国制浆造纸研究院有限公司 | A method of dehydration of papermaking sludge is promoted by preconditioned |
| CN110092569A (en) * | 2019-04-15 | 2019-08-06 | 华南理工大学 | A kind of mud dewatering method |
| CN110372175A (en) * | 2019-08-30 | 2019-10-25 | 重庆艾克洛环保科技有限公司 | A kind of sludge conditioner and sludge drying processing method |
| CN110903015A (en) * | 2019-11-30 | 2020-03-24 | 河南永泽环境科技有限公司 | Production method of environment-friendly composite sludge conditioner |
| CN111362552A (en) * | 2020-04-16 | 2020-07-03 | 清有生态科技(上海)有限公司 | Method for dehydrating and drying sludge in tank-making process wastewater |
| CN112358163A (en) * | 2020-11-13 | 2021-02-12 | 中冶集团武汉勘察研究院有限公司 | Chemical reagent and method for accelerating dehydration and separation of slurry |
| CN113860701A (en) * | 2021-11-11 | 2021-12-31 | 新疆水处理工程技术研究中心有限公司 | Sludge dehydrating agent and preparation method thereof |
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| CN107698130A (en) * | 2017-10-16 | 2018-02-16 | 佛山市蓝叶环保科技有限公司 | A kind of environmentally friendly efficient reactivity sludge dehydrating agent |
| CN108328905A (en) * | 2018-03-21 | 2018-07-27 | 深圳市鸿卓环保科技有限公司 | A kind of sludge dehydration conditioner and its application method |
| CN108503001B (en) * | 2018-04-09 | 2020-10-27 | 安徽金兄弟环保科技股份有限公司 | Novel water pollution remediation agent and preparation method thereof |
| CN108503001A (en) * | 2018-04-09 | 2018-09-07 | 长沙秋点兵信息科技有限公司 | A kind of novel water pollution renovation agent and preparation method thereof |
| CN108409104A (en) * | 2018-04-20 | 2018-08-17 | 东莞市顶盛环保科技有限公司 | A kind of New Type of Sludge Dewatering agent |
| CN109179965A (en) * | 2018-11-01 | 2019-01-11 | 中国农业大学 | It is a kind of for compound conditioned dose of sludge high-efficiency dehydration and mud dewatering method |
| CN109592879A (en) * | 2018-11-28 | 2019-04-09 | 湖州智清环保科技有限公司 | Novel organic composite sludge conditioning modifying agent |
| CN109734283A (en) * | 2018-12-05 | 2019-05-10 | 中国制浆造纸研究院有限公司 | A method of dehydration of papermaking sludge is promoted by preconditioned |
| CN110092569A (en) * | 2019-04-15 | 2019-08-06 | 华南理工大学 | A kind of mud dewatering method |
| WO2020211321A1 (en) * | 2019-04-15 | 2020-10-22 | 华南理工大学 | Sludge dewatering method |
| CN110372175A (en) * | 2019-08-30 | 2019-10-25 | 重庆艾克洛环保科技有限公司 | A kind of sludge conditioner and sludge drying processing method |
| CN110903015A (en) * | 2019-11-30 | 2020-03-24 | 河南永泽环境科技有限公司 | Production method of environment-friendly composite sludge conditioner |
| CN110903015B (en) * | 2019-11-30 | 2021-12-07 | 河南永泽环境科技有限公司 | Production method of environment-friendly composite sludge conditioner |
| CN111362552A (en) * | 2020-04-16 | 2020-07-03 | 清有生态科技(上海)有限公司 | Method for dehydrating and drying sludge in tank-making process wastewater |
| CN112358163A (en) * | 2020-11-13 | 2021-02-12 | 中冶集团武汉勘察研究院有限公司 | Chemical reagent and method for accelerating dehydration and separation of slurry |
| CN113860701A (en) * | 2021-11-11 | 2021-12-31 | 新疆水处理工程技术研究中心有限公司 | Sludge dehydrating agent and preparation method thereof |
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Application publication date: 20170531 |