CN107162366A - A kind of solidification method of disposal of municipal sewage - Google Patents
A kind of solidification method of disposal of municipal sewage Download PDFInfo
- Publication number
- CN107162366A CN107162366A CN201710543084.7A CN201710543084A CN107162366A CN 107162366 A CN107162366 A CN 107162366A CN 201710543084 A CN201710543084 A CN 201710543084A CN 107162366 A CN107162366 A CN 107162366A
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- CN
- China
- Prior art keywords
- sludge
- solidification
- sewage
- moisture
- block
- 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.)
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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
- C02F11/008—Sludge treatment by fixation or solidification
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/001—Runoff or storm water
Landscapes
- 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)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of solidification method of disposal of municipal sewage.It mainly comprises the following steps：（1）The dewatered sludge of urban sewage plant that moisture content is 70 80% is taken, if moisture is less than 70%, moisture percentage in sewage sludge is adjusted by adding moisture；（2）On the basis of sludge weight, 30 38% mixed type solidifying agents are added into sludge, primary solidification block are formed after stirring mixing, mixed type solidifying agent is mainly constituted and quality proportioning is：Curing agent 79, flocculation aid 0.5 2, local soil 22.5 27；（3）The primary solidification block stirred is taped against in sludge landfill according to 20 120cm thickness, and covers upper waterproof membrane, is conserved 78 days using dry type maintenance process, forms sludge curing block.The present invention it is improved for existing sewage solidification with solidification filler, local soil is remarkably improved the solidification condensation efficiency of sludge, quick adsorption can be carried out to the heavy metal in sludge simultaneously, either follow-up landfill or burning and burying, it can become and give up as fertilizer, greatly reduce the processing cost of sewage.
Description
Technical field
The present invention relates to technical field of sewage, the solidification method of disposal of specially a kind of municipal sewage.
Background technology
The final disposal of sludge from wastewater treatment plant is at problem and the challenge of domestic and international facing, existing sludge
Manage content of organics in the sludge after technical finesse high, perishable, foul smelling, and contain parasitic ovum, pathogenic microorganism, a huge sum of money
Category and many clock chemical combination materials, the particularly processing of heavy metal, are extremely difficult to sanitary landfills standard, heavy metal generally have it is acute or
Person's chronic toxicity, arbitrarily landfill all has harmfulness to human body and animals and plants, and environmental pollution etc. can be caused a series of tight
Weight consequence, therefore sludge handling problem is resolved as the very important research of sewage treatment industry, existing sludge curing
Technology in sludge mainly by delivering curing agent and flocculation aid to form quick solidifying, so as to realize the sludge curing in sewage
And remove, but curing agent and itself solidification intensity of flocculation aid are limited, and cost is high, is undoubtedly added to sewage disposal no small
Input.
And it has been investigated that, the local soil that sewage produces city has prominent imitate for improving the solidification condensation efficiency of sludge
Really, and processing cost can be greatly reduced.
The content of the invention
It is an object of the invention to provide a kind of solidification method of disposal of municipal sewage, to solve to carry in above-mentioned background technology
The problem of going out.
The technical problems to be solved by the invention are realized using following technical scheme：
A kind of solidification method of disposal of municipal sewage, it comprises the following steps：
（1）The dewatered sludge of urban sewage plant that moisture content is 70-80% is taken, if moisture is less than 70%, by adding moisture
Adjust moisture percentage in sewage sludge；
（2）On the basis of sludge weight, 30-38% mixed type solidifying agents are added into sludge, primary solidification is formed after stirring mixing
Block；
（3）The primary solidification block stirred is taped against in sludge landfill according to 20-120cm thickness, and covers upper waterproof
Film, is conserved 7-8 days using dry type maintenance process, forms sludge curing block.
It is preferred that, the mixed type solidifying agent is mainly constituted and quality proportioning is：Curing agent 7-9, flocculation aid 0.5-2, this
Ground soil 22.5-27.
It is preferred that, the curing agent is the mixture of hydrochloride cement formulations and desulfurizing agent, and the flocculation aid is lime, aluminium
One or several kinds in salt, the oxide of aluminium and cinder.
The beneficial effects of the invention are as follows：It is improved for existing sewage solidification with solidification filler, and local soil can show
The solidification condensation efficiency for improving sludge is write, while quick adsorption can be carried out to the heavy metal in sludge, either follow-up landfill is also
It is burning and burying, can becomes and give up as fertilizer, greatly reduces the processing cost of sewage.
Embodiment
Below, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described implementation
Example only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model that the present invention is protected
Enclose.
A kind of solidification method of disposal of municipal sewage, it comprises the following steps：
（1）The dewatered sludge of urban sewage plant that moisture content is 70-80% is taken, if moisture is less than 70%, by adding moisture
Adjust moisture percentage in sewage sludge；
（2）On the basis of sludge weight, 30-38% mixed type solidifying agents are added into sludge, primary solidification is formed after stirring mixing
Block；
（3）The primary solidification block stirred is taped against in sludge landfill according to 20-120cm thickness, and covers upper waterproof
Film, is conserved 7-8 days using dry type maintenance process, forms sludge curing block.
For further optimisation technique scheme, the mixed type solidifying agent is mainly constituted and quality proportioning is：Curing agent 7-
9, flocculation aid 0.5-2, local soil 22.5-27.
For further optimisation technique scheme, the curing agent is the mixture of hydrochloride cement formulations and desulfurizing agent, institute
It is the one or several kinds in lime, aluminium salt, the oxide of aluminium and cinder to state flocculation aid.
Embodiment 1
The municipal wastewater treatment plant sludge to be drained off for taking moisture content to be 60%, the conditioning of mud moisture content that adds water to 75%, using sludge weight as
Benchmark, added into sludge 33% mixed type solidifying agent, stir to form primary solidification block, when preliminary by what is stirred
Cured block is taped against in sludge landfill according to 80cm thickness, and covers upper waterproof membrane progress dry type maintenance 7 days, is formed sludge and is consolidated
Change block, now its calorific value can reach 14000KJ/kg or so, and compression strength reaches 2000KN/ ㎡, when preliminary by what is stirred
Cured block is taped against in sludge landfill according to 20cm thickness, and covers upper waterproof membrane progress dry type maintenance 8 days, is formed sludge and is consolidated
Change block, now its calorific value can reach 13000KJ/kg or so, and compression strength reaches 3000KN/ ㎡, it is dirty by leaching toxicity test
Harmful heavy metal and hardly degraded organic substance are not detected in mud cured block.
Embodiment 2
The municipal wastewater treatment plant sludge to be drained off for taking moisture content to be 70%, the conditioning of mud moisture content that adds water to 80%, using sludge weight as
Benchmark, added into sludge 38% mixed type solidifying agent, stir to form primary solidification block, when preliminary by what is stirred
Cured block is taped against in sludge landfill according to 80cm thickness, and covers upper waterproof membrane progress dry type maintenance 7 days, is formed sludge and is consolidated
Change block, now its calorific value can reach 14000KJ/kg or so, and compression strength reaches 2500KN/ ㎡, when preliminary by what is stirred
Cured block is taped against in sludge landfill according to 20cm thickness, and covers upper waterproof membrane progress dry type maintenance 8 days, is formed sludge and is consolidated
Change block, now its calorific value can reach 13000KJ/kg or so, and compression strength reaches 4000KN/ ㎡, it is dirty by leaching toxicity test
Harmful heavy metal and hardly degraded organic substance are not detected in mud cured block.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention,
Although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic,
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., should be included in the present invention's
Within protection domain.
Claims (2)
1. the solidification method of disposal of a kind of municipal sewage, it is characterised in that it comprises the following steps：
（1）The dewatered sludge of urban sewage plant that moisture content is 70-80% is taken, if moisture is less than 70%, by adding moisture
Adjust moisture percentage in sewage sludge；
（2）On the basis of sludge weight, 30-38% mixed type solidifying agents are added into sludge, primary solidification is formed after stirring mixing
Block, mixed type solidifying agent is mainly constituted and quality proportioning is：Curing agent 7-9, flocculation aid 0.5-2, local soil 22.5-27；
（3）The primary solidification block stirred is taped against in sludge landfill according to 20-120cm thickness, and covers upper waterproof
Film, is conserved 7-8 days using dry type maintenance process, forms sludge curing block.
2. the solidification method of disposal of a kind of municipal sewage according to claim 1, it is characterised in that the curing agent is hydrochloric acid
The mixture of salt cement preparation and desulfurizing agent, the flocculation aid be lime, aluminium salt, the oxide of aluminium and one kind in cinder or
It is several.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710543084.7A CN107162366A (en) | 2017-07-05 | 2017-07-05 | A kind of solidification method of disposal of municipal sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710543084.7A CN107162366A (en) | 2017-07-05 | 2017-07-05 | A kind of solidification method of disposal of municipal sewage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107162366A true CN107162366A (en) | 2017-09-15 |
Family
ID=59822818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710543084.7A Pending CN107162366A (en) | 2017-07-05 | 2017-07-05 | A kind of solidification method of disposal of municipal sewage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107162366A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114907073A (en) * | 2022-05-27 | 2022-08-16 | 江苏科技大学 | Modified municipal sludge for covering soil of landfill and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101007696A (en) * | 2007-01-22 | 2007-08-01 | 湖南军信环保建设开发有限公司 | Sludge solidification and filling processing method |
| CN101050046A (en) * | 2007-05-10 | 2007-10-10 | 上海交通大学 | Treatment method for solidifying sludge of sewage plant in city |
| US20140245930A1 (en) * | 2011-11-02 | 2014-09-04 | Empire Technology Development Llc | Solidifying sludge |
| CN105731746A (en) * | 2016-04-19 | 2016-07-06 | 中山大学 | Method for curing sludge for roadbed filling |
-
2017
- 2017-07-05 CN CN201710543084.7A patent/CN107162366A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101007696A (en) * | 2007-01-22 | 2007-08-01 | 湖南军信环保建设开发有限公司 | Sludge solidification and filling processing method |
| CN101050046A (en) * | 2007-05-10 | 2007-10-10 | 上海交通大学 | Treatment method for solidifying sludge of sewage plant in city |
| US20140245930A1 (en) * | 2011-11-02 | 2014-09-04 | Empire Technology Development Llc | Solidifying sludge |
| CN105731746A (en) * | 2016-04-19 | 2016-07-06 | 中山大学 | Method for curing sludge for roadbed filling |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114907073A (en) * | 2022-05-27 | 2022-08-16 | 江苏科技大学 | Modified municipal sludge for covering soil of landfill and preparation method thereof |
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Application publication date: 20170915 |
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