CN102976583A - Deep dehydration treatment method for sludge of river courses and enclosed lakes - Google Patents
Deep dehydration treatment method for sludge of river courses and enclosed lakes Download PDFInfo
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- CN102976583A CN102976583A CN2012105829619A CN201210582961A CN102976583A CN 102976583 A CN102976583 A CN 102976583A CN 2012105829619 A CN2012105829619 A CN 2012105829619A CN 201210582961 A CN201210582961 A CN 201210582961A CN 102976583 A CN102976583 A CN 102976583A
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Abstract
The invention discloses a deep dehydration treatment method for sludge of river courses and enclosed lakes, which comprises the following steps: 1) adding TiO2-supported photoelectric catalyst into sludge, and thoroughly stirring, wherein the TiO2-supported photoelectric catalyst accounts for 0.5-3% of the absolute dry sludge in percentage by weight; 2) inputting the sludge into reaction equipment, irradiating with an ultraviolet generator while stirring, and introducing high-energy electrons with an air source carrying flow high-energy state electron generator, wherein the reaction time is 8-15 minutes; 3) adding composite coagulation agent to perform flocculation reaction for 5-10 minutes, wherein the composite coagulation agent accounts for 0.15-0.45% of the absolute dry sludge in percentage by weight; and 4) dehydrating the sludge subjected to the reaction with a filter press. According to the characteristics of low water content, low organic content, high treatment capacity and the like of sludge of river courses and enclosed lakes, the invention researches and optimizes the deep sludge treatment method based on TiO2-supported photoelectric catalysis, reduces the addition of the supported catalyst and the composite coagulation agent, shortens the reaction time and saves the energy, thereby realizing high-efficiency quick treatment in an energy-saving and environment-friendly manner.
Description
Technical field
The present invention relates to environmental technology field, the deep dehydration treatment process of especially a kind of river course, interior lake silt.
Background technology
The applicant is at Chinese patent " 201110402563.X---load TiO
2Catalyzer, the apparatus and method of photoelectrocatalysis advanced treatment mud " in a kind of load TiO that utilizes is disclosed
2The method of photoelectrocatalysis advanced treatment mud is carried out in the photoelectrocatalysis agent, comprises following steps:
The first step: in mud, add load TiO
2Load TiO is fully stirred in the photoelectrocatalysis agent
2The interpolation weight percent of photoelectrocatalysis agent is over dry mud: supported catalyst=100:3.2 ~ 11;
Second step: according to stirring mud 30～90 minutes in the reactor that do not coexist of organic content, adopt simultaneously the ultraviolet generator on reactor top to shine, adopt air source current-carrying high-energy state electronics generator in mud, to import high-energy electron by the aerating pipelines of reactor bottom;
The 3rd step: add compound coagulation agent and carried out flocculation reaction 5～10 minutes; Compound coagulation agent is that 85～95% PAC and 5～15% PAM form by weight percent, and adding weight percent is over dry mud: compound coagulation agent=100:0.8 ~ 1.5;
The 4th step: export the mud in the reactor to intermediate pool, and utilize pressure filter to carry out press filtration.
Utilize above-mentioned technique, can be under the condition of normal temperature, usual pressure, be that moisture content in 98～99% the excess sludge (excess activated sludge) is reduced to below 50% with sewage work's water content, finish simultaneously the processing of sterilization, deodorizing, the curing of toxic heavy metal ion, have significant economic benefit and the value of environmental protection.
River course, interior lake silt also belong to a kind of of mud, but with the sewage work water content be that 98～99% excess sludge also there are differences: (1) river course, interior lake silt by sludge pump directly from the river bed, lakebed draws, because through long-term precipitation, relatively low through the mud water content that sludge pump is drawn, be generally about 93.5～96.5%; (2) river course, interior lake silt are through long-term precipitation and spontaneous fermentation, and its organic content is lower, and organic content is over dry mud 8%～19%; (3) river course, inland lake sludge treatment amount are large, and equipment mobility requires high.Therefore adopt the disclosed processing method of above-mentioned patent, can not satisfy the efficient fast processing requirement of river course, interior lake silt.
Summary of the invention
The applicant can not satisfy the shortcoming of the efficient fast processing requirement of river course, interior lake silt for above-mentioned existing method for sludge treatment, the deep dehydration treatment process of the rational river course of a kind of technique, interior lake silt is provided, thereby can processes for the speciality of mud.
The technical solution adopted in the present invention is as follows:
The deep dehydration treatment process of a kind of river course, interior lake silt may further comprise the steps: the first step: add the agent of load TiO2 photoelectrocatalysis in mud, fully stir, the interpolation weight percent of load TiO2 photoelectrocatalysis agent is 0.5%～3% of over dry mud; Second step: mud is inputted conversion unit, stir and adopt simultaneously ultraviolet generator to shine, adopt air source current-carrying high-energy state electronics generator to import high-energy electron, the reaction times is 8～15 minutes; The 3rd step: add compound coagulation agent and carried out flocculation reaction 5～10 minutes, adding weight percent is 0.15%～0.45% of over dry mud; The 4th step: reacted mud is carried out filter-press dehydration.
Described compound coagulation agent is that 85～95% PAC and 5～15% PAM form by weight percent.
The power of described ultraviolet generator is 3～6KW, and the power of described air source current-carrying high-energy state electronics generator is 25KW～50KW, and the conveying bleed pressure is 2.2 * 105～4.8 * 105Pa, current-carrying high-energy state electrical air source amount 500～2600L.
Beneficial effect of the present invention is as follows:
The present invention is according to river course, interior lake silt water content, the characteristics such as organic content is low, treatment capacity is large, to load TiO
2Photoelectrocatalysis advanced treatment mud method is studied and is optimized, and has reduced the addition of supported catalyst and compound coagulation agent, has shortened the reaction times, saves energy consumption, thereby can efficiently fast, energy-conserving and environment-protective carry out the processing of such mud.
Embodiment
The present invention at first adopts sludge pump to draw river course, the interior lake silt of water ratio about 93.5～96.5%, and after the long-term precipitation of mud process and the fermentation, organic content is about over dry sludge quality 8～19%.
The first step: in mud, add load TiO
2Load TiO is fully stirred in the photoelectrocatalysis agent
2The interpolation weight percent of photoelectrocatalysis agent is 0.5%～3% of over dry mud.
Second step: mud is inputted conversion unit, reactor for example, under the effect of UV-light, import air source current-carrying high-energy electron, finish the working cycle to the photoelectrocatalysis reaction of mud oxidation rupture of membranes, make organic matter and mushroom in the mud water of constitution, inhale Bao Shui, crystal water becomes flowable interstitial water.Its principle of work is identical with published patent in the background technology, namely adopts catalyzer TiO
2With the carrier special construction, composition and structure according to mud can be regulated catalyst levels and concerted catalysis time, under the high-energy electron synergy of UV-light and air source current-carrying, in reaction tank, produce high-energy state OH free radical, Organic Sludge causes interface s-g, s-l microelectronics transfering system that mass transfer body TiOM makes up energy state and Orbital Symmetry under high-energy state OH Free Radical, cracked sludge bacteria micelle structure, the silt structure film is cracked, discharge structure cell water, inhale Bao Shui and water of constitution.The power of ultraviolet generator is 3～6KW, working hour 8～15min; The power of air source current-carrying high-energy state electronics generator is 25～50KW, and carrying bleed pressure is 2.2 * 10
5～4.8 * 10
5Pa, current-carrying high-energy state electrical air source amount 500～2600L, oxidization time is 8～15min.
The 3rd step: add compound coagulation agent, compound coagulation agent is by 85～95%(weight percent) PAC (Polyaluminium Chloride) form with 5～15% PAM (Polyacrylamide), under coagulation agent effect, through rupture of membranes sludge granules isoelectric state coagulation, toxic heavy metal ion chelating coagulation, the sharp separation of realization muddy water; Adding weight percent is 0.15%～0.45% of over dry mud, and the reaction times is 5～10min.
Mud enters intermediate pool after the reaction, is promoted to diaphragm filter press through spiral pump, realizes the sharp separation of muddy water under usual pressure, can obtain the mud piece of water ratio below 40% after the common press filtration, and filtrate directly enters in river, the lake.
Embodiment one:
Adopt sludge pump to draw mud from the river course, water ratio is 93.5% riverway sludge 150L, and organic content is about 8%; In mud, add the agent of 50.0g load TiO2 photoelectrocatalysis, weight percent is 0.5% of over dry mud, fully stir, opening ultraviolet generator shines the mud in the reactor, import high-energy electron by the high-energy electron generator via aerating pipelines simultaneously and react, react while stirring 12min.Then adding with over dry mud weight ratio is 0.15% compound coagulation agent (wherein PAC13g, PAM2.0g), behind the 5min with mud discharging to intermediate pool, be promoted to diaphragm filter press through spiral pump, by common press filtration, obtain water ratio and be 39.6% mud.
Embodiment two:
Adopt sludge pump to draw mud from the river course, water ratio is 96.5% riverway sludge 300L, and organic content is about 19%; In mud, add 310.0g load TiO
2The photoelectrocatalysis agent, weight percent is 3% of over dry mud, fully stirs, and opens ultraviolet generator the mud in the reactor is shone, import high-energy electron by the high-energy electron generator via aerating pipelines simultaneously and react, react while stirring 15min.Then adding with over dry mud weight ratio is 0.44% compound coagulation agent (wherein PAC39g, PAM7g), behind the 10min with mud discharging to intermediate pool, be promoted to diaphragm filter press through spiral pump, by common press filtration, obtain water ratio and be 30.8% mud.
Embodiment three:
Adopt sludge pump to draw mud from the river course, water ratio is 95.0% riverway sludge 200L, and organic content is about 10%; In mud, add 200.0g load TiO
2The photoelectrocatalysis agent, weight percent is 2% of over dry mud, fully stirs, and opens ultraviolet generator the mud in the reactor is shone, import high-energy electron by the high-energy electron generator via aerating pipelines simultaneously and react, react while stirring 15min.Then adding with over dry mud weight ratio is 0.3% compound coagulation agent (wherein PAC28.5g, PAM1.5g), behind the 10min with mud discharging to intermediate pool, be promoted to diaphragm filter press through spiral pump, by common press filtration, obtain water ratio and be 35.2% mud.
Embodiment four:
Adopt sludge pump to draw mud from the river course, water ratio is 96.0% riverway sludge 250L, and organic content is about 15%; In mud, add 205.0g load TiO
2The photoelectrocatalysis agent, weight percent is 2% of over dry mud, fully stirs, and opens ultraviolet generator the mud in the reactor is shone, import high-energy electron by the high-energy electron generator via aerating pipelines simultaneously and react, react while stirring 12min.Then adding with over dry mud weight ratio is 0.34% compound coagulation agent (wherein PAC30g, PAM3.5g), behind the 8min with mud discharging to intermediate pool, be promoted to diaphragm filter press through spiral pump, by common press filtration, obtain water ratio and be 36.7% mud.
More than describing is explanation of the invention, is not that limited range of the present invention is referring to claim to the restriction of invention, and in the situation of spirit of the present invention, the present invention can do any type of modification, for example present method is processed the mud of similarity.
Claims (3)
1. the deep dehydration treatment process of a river course, interior lake silt is characterized in that may further comprise the steps:
The first step: in mud, add load TiO
2Load TiO is fully stirred in the photoelectrocatalysis agent
2The interpolation weight percent of photoelectrocatalysis agent is 0.5%～3% of over dry mud;
Second step: mud is inputted conversion unit, stir and adopt simultaneously ultraviolet generator to shine, adopt air source current-carrying high-energy state electronics generator to import high-energy electron, the reaction times is 8～15 minutes;
The 3rd step: add compound coagulation agent and carried out flocculation reaction 5～10 minutes, adding weight percent is 0.15%～0.45% of over dry mud;
The 4th step: reacted mud is carried out filter-press dehydration.
2. according to the deep dehydration treatment process of river course claimed in claim 1, interior lake silt, it is characterized in that: described compound coagulation agent is that 85～95% PAC and 5～15% PAM form by weight percent.
3. according to the deep dehydration treatment process of river course claimed in claim 1, interior lake silt, it is characterized in that: the power of described ultraviolet generator is 3～6KW, the power of described air source current-carrying high-energy state electronics generator is 25KW～50KW, and carrying bleed pressure is 2.2 * 10
5～4.8 * 10
5Pa, current-carrying high-energy state electrical air source amount 500～2600L.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275036A (en) * | 2015-11-06 | 2016-01-27 | 江苏一品环保科技有限公司 | River channel dredging and fertilizer making system |
| CN106007314A (en) * | 2016-07-04 | 2016-10-12 | 柳州若思纳米材料科技有限公司 | Method and device for repairing lake bottom sludge by titanium dioxide photocatalysis |
| CN106882914A (en) * | 2017-03-02 | 2017-06-23 | 南京航空航天大学 | The method for improving excess sludge of municipal sewage plant dewatering |
| CN107055987A (en) * | 2016-12-28 | 2017-08-18 | 中广核中科海维科技发展有限公司 | The electron irradiation processing system and handling process of a kind of sludge |
| CN110054370A (en) * | 2019-04-15 | 2019-07-26 | 广东开源环境科技有限公司 | A kind of river bottom mud solidification is stable to repair medicament and preparation method thereof |
| CN112607990A (en) * | 2020-12-25 | 2021-04-06 | 江南大学 | Method for removing humic acid and improving sludge liquid state fermentation acid production by limited amount type catalytic flocculation |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513108A (en) * | 2011-12-07 | 2012-06-27 | 江苏兆盛环保集团有限公司 | TiO2-carrying photoelectric catalyst for photoelectrocatalytic advanced treatment on sludge and method and device for TiO2-carrying photoelectric catalyst-based photoelectrocatalytic advanced treatment on sludge |
-
2012
- 2012-12-28 CN CN2012105829619A patent/CN102976583A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513108A (en) * | 2011-12-07 | 2012-06-27 | 江苏兆盛环保集团有限公司 | TiO2-carrying photoelectric catalyst for photoelectrocatalytic advanced treatment on sludge and method and device for TiO2-carrying photoelectric catalyst-based photoelectrocatalytic advanced treatment on sludge |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275036A (en) * | 2015-11-06 | 2016-01-27 | 江苏一品环保科技有限公司 | River channel dredging and fertilizer making system |
| CN106007314A (en) * | 2016-07-04 | 2016-10-12 | 柳州若思纳米材料科技有限公司 | Method and device for repairing lake bottom sludge by titanium dioxide photocatalysis |
| CN106007314B (en) * | 2016-07-04 | 2019-01-22 | 柳州若思纳米材料科技有限公司 | A kind of method and apparatus that optically catalytic TiO 2 repairs bottom mud in lake |
| CN107055987A (en) * | 2016-12-28 | 2017-08-18 | 中广核中科海维科技发展有限公司 | The electron irradiation processing system and handling process of a kind of sludge |
| CN106882914A (en) * | 2017-03-02 | 2017-06-23 | 南京航空航天大学 | The method for improving excess sludge of municipal sewage plant dewatering |
| CN106882914B (en) * | 2017-03-02 | 2021-04-06 | 南京航空航天大学 | Method for improving dehydration performance of excess sludge of municipal sewage treatment plant |
| CN110054370A (en) * | 2019-04-15 | 2019-07-26 | 广东开源环境科技有限公司 | A kind of river bottom mud solidification is stable to repair medicament and preparation method thereof |
| CN110054370B (en) * | 2019-04-15 | 2021-08-20 | 广东开源环境科技有限公司 | River sediment curing, stabilizing and repairing agent and preparation method thereof |
| CN112607990A (en) * | 2020-12-25 | 2021-04-06 | 江南大学 | Method for removing humic acid and improving sludge liquid state fermentation acid production by limited amount type catalytic flocculation |
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Application publication date: 20130320 |