CN101412037A - Method for optimizing soil using sludge after physical and chemical treatment - Google Patents
Method for optimizing soil using sludge after physical and chemical treatment Download PDFInfo
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- CN101412037A CN101412037A CNA2008102134310A CN200810213431A CN101412037A CN 101412037 A CN101412037 A CN 101412037A CN A2008102134310 A CNA2008102134310 A CN A2008102134310A CN 200810213431 A CN200810213431 A CN 200810213431A CN 101412037 A CN101412037 A CN 101412037A
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Abstract
The invention relates to a method for optimizing soil by materialized sludge. The method comprises the following steps: mixing the materialized sludge (alkali) and processed acid soil (containing 10 portions of inferior soil and 1 portion of ferrous sulfate), paving the mixture on the ground (about 50 centimeters), and reducing heavy metal hexavalent chromium in the sludge into trivalent chromium after watering and reacting. After the inferior soil are mixed and reacted with the sludge, the soil becomes silt shaped and neutral; and after water logging, the soil is loose and fertile, does not harden, and becomes high-quality soil capable of planting paddy rice and vegetables. The method can treat sludge in bulk and improve soil in large area.
Description
Technical field the present invention relates to a kind of method of optimizing soil using sludge after physical and chemical treatment.
Produce a large amount of mud in the background technology municipal sewage treatment process, dehydration municipal sludge moisture content is 70～80%, the blister lotion, micro-stink is arranged, its composition mainly contains materials such as various organic matters, zoogloea, fiber, a small amount of heavy metal, under the certain environment condition, rot smelly (5 grades of stenches), have flowability, contaminated environment.The mud of handling through physico-chemical process abbreviates materialized mud as.Materialized mud is shelved smelly, the no bacteriological aftergrowth of without putrefaction, the sandization that hardens, be alkalescence (about pH10.5).
For many years, the municipal sewage of China all belongs to the nature discharging, the sewage aggregate and precipitate thing of spring and summer autumn three blowdowns in season channel, and it is smelly to rot, and produces a large amount of bacteriums, and contaminated environment is brought a lot of puzzlements to the city.
Over past ten years, growth along with national economy, the raising of living environment, each city, the whole nation all has sewage treatment plant, centralized treatment of urban sewage is reached discharging again behind the state sewage emission standard, and remaining mud is stacked or landfill naturally, and some municipal sludge has almost filled up all river embankments that leave unused of streets and lanes, cause mud besieged city phenomenon, influenced the life of urban resident environment.Since 2000, national government was all attached great importance to the Treatment of Sludge problem, and various places sewage treatment plant also all tries out a lot of methods and handles mud, but successful case is not all arranged.
Summary of the invention the present invention adopts materialized mud (alkalescence) to mix with finished acid soil (10 parts of soil+1 part of ferrous sulfate inferior), ground (about 50cm) is gone in the shop, after the pouring that discharges water is reacted, the heavy metal hexavalent chrome reduction is a trivalent chromium in the mud, become mud shape, neutrality after soil inferior and the mud hybrid reaction, the soil is porous behind the draining, do not harden, fertile, but become the high-quality soils of rice cultivation and vegetables.But the present invention's mass disposal mud, large tracts of land are improved the soil.
Detailed content is as follows:
(1) characteristics of the present invention are to handle materialized mud;
(2) ferrous sulfate mixes (10: 1) with soil inferior, makes acid soil;
(3) ferrous sulfate generates trivalent chromium with hexavalent chrome reduction in the mud;
(4) materialized mud (alkalescence) mixes (1: 1) with finished acid soil, and administering soil inferior is good soil;
Description of drawings further describes the specific embodiment of the present invention below in conjunction with accompanying drawing.
Fig. 1 is the process chart of the specific embodiment of the present invention.
Technological process is as follows:
(1) collects materialized mud, be deposited into selected improvement soil inferior section;
(2) type selecting, purchase and excavate soil machinery inferior, mixing equipment is installed;
(3) soil inferior is got the raw materials ready with the ferrous sulfate metering;
(4) mix acid soil;
(5) materialized mud mixes with acid soil (1: 1);
(6) place mat composite soil 50cm;
(7) discharge water immersion, reaction more than 3 days;
(8) according to follow-up plantation crops kind, the control draining guarantees humidity;
Specific embodiment the present invention is applicable to a kind of method of optimizing soil using sludge after physical and chemical treatment.
A kind of method specific embodiment of optimizing soil using sludge after physical and chemical treatment is as follows:
(1) concentrates materialized mud to the destination, stack standby;
(2) excavate topsoil 25cm on the spot, 1/10 ferrous sulfate that adds the soil amount is mixed into acid soil, stacks standby on the spot;
(3) mix with acid soil (1: 1) with materialized mud, place mat ground in order, 50cm is advisable;
(4) discharge water pouring shop soil, can rice transplanting after 3 days or draining plant vegetables.
Claims (5)
1, a kind of method of optimizing soil using sludge after physical and chemical treatment, it is characterized in that: adopt materialized mud (alkalescence) to mix with finished acid soil (10 parts of soil+1 part of ferrous sulfate inferior), ground (about 50cm) is gone in the shop, after the pouring that discharges water is reacted, the heavy metal hexavalent chrome reduction is a trivalent chromium in the mud, become mud shape, neutrality after soil inferior and the mud hybrid reaction, the soil is porous behind the draining, do not harden, fertile, but become the high-quality soil of rice cultivation and vegetables.But the present invention's mass disposal mud, large tracts of land are improved the soil.
2, the method for a kind of optimizing soil using sludge after physical and chemical treatment according to claim 1 is characterized in that: the present invention is applicable to the processing materialized mud.
3, the method for a kind of optimizing soil using sludge after physical and chemical treatment according to claim 1 is characterized in that: ferrous sulfate mixes (10: 1) with soil inferior, makes acid soil.
4, the method for a kind of optimizing soil using sludge after physical and chemical treatment according to claim 1 is characterized in that: ferrous sulfate generates trivalent chromium with hexavalent chrome reduction in the mud.
5, the method for a kind of optimizing soil using sludge after physical and chemical treatment according to claim 1 is characterized in that: materialized mud (alkalescence) mixes (1: 1) with finished acid soil, and administering soil inferior is good soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102134310A CN101412037A (en) | 2008-09-02 | 2008-09-02 | Method for optimizing soil using sludge after physical and chemical treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102134310A CN101412037A (en) | 2008-09-02 | 2008-09-02 | Method for optimizing soil using sludge after physical and chemical treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101412037A true CN101412037A (en) | 2009-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2008102134310A Pending CN101412037A (en) | 2008-09-02 | 2008-09-02 | Method for optimizing soil using sludge after physical and chemical treatment |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102476130A (en) * | 2010-11-26 | 2012-05-30 | 李兴 | Restoration treatment reduction method for hexavalent chromium-containing soil |
| CN103978026A (en) * | 2013-12-05 | 2014-08-13 | 青岛理工大学 | Method for in-situ repairing Cr (VI) -containing site by utilizing organic waste |
| CN104307868A (en) * | 2014-09-16 | 2015-01-28 | 青海省环境科学研究设计院 | Method for removing hexavalent chromium from polluted soil |
| CN105935698A (en) * | 2016-05-30 | 2016-09-14 | 青岛理工大学 | Novel Cu in-situ detoxification method for contaminated site |
| CN105935691A (en) * | 2016-05-30 | 2016-09-14 | 青岛理工大学 | Novel Cd in-situ detoxification method for contaminated site |
| CN105935699A (en) * | 2016-05-30 | 2016-09-14 | 青岛理工大学 | Novel Sb in-situ detoxification method for polluted site |
| CN105945050A (en) * | 2016-05-30 | 2016-09-21 | 青岛理工大学 | Biogas residue-based hexavalent chromium heavily-polluted site in-situ detoxification method |
| CN105945053A (en) * | 2016-05-30 | 2016-09-21 | 青岛理工大学 | Novel contaminated site Pb in-situ detoxification method based on biogas residues |
| CN106040734A (en) * | 2016-05-30 | 2016-10-26 | 青岛理工大学 | Method for cooperatively treating hexavalent chromium in polluted soil by utilizing biogas residues and ferrous sulfate |
| CN106489340A (en) * | 2016-10-18 | 2017-03-15 | 沈阳建筑大学 | A kind of sludge blends the device and method of improving desert soil earth with desert soil |
| CN108299066A (en) * | 2017-09-25 | 2018-07-20 | 路德环境科技股份有限公司 | The production method of Chinese garden planting soil |
| CN109486494A (en) * | 2018-09-18 | 2019-03-19 | 魏菊宁 | A kind of soil-repairing agent and preparation method thereof |
| CN110663503A (en) * | 2019-11-01 | 2020-01-10 | 浙江省农业科学院 | Rice seedling raising substrate and preparation method thereof |
| CN115043559A (en) * | 2022-06-15 | 2022-09-13 | 沧州冀环威立雅环境服务有限公司 | Comprehensive treatment process for high-iron waste hydrochloric acid and hexavalent chromium-containing sludge |
-
2008
- 2008-09-02 CN CNA2008102134310A patent/CN101412037A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102476130A (en) * | 2010-11-26 | 2012-05-30 | 李兴 | Restoration treatment reduction method for hexavalent chromium-containing soil |
| CN103978026A (en) * | 2013-12-05 | 2014-08-13 | 青岛理工大学 | Method for in-situ repairing Cr (VI) -containing site by utilizing organic waste |
| CN104307868A (en) * | 2014-09-16 | 2015-01-28 | 青海省环境科学研究设计院 | Method for removing hexavalent chromium from polluted soil |
| CN106040734A (en) * | 2016-05-30 | 2016-10-26 | 青岛理工大学 | Method for cooperatively treating hexavalent chromium in polluted soil by utilizing biogas residues and ferrous sulfate |
| CN105935691A (en) * | 2016-05-30 | 2016-09-14 | 青岛理工大学 | Novel Cd in-situ detoxification method for contaminated site |
| CN105935699A (en) * | 2016-05-30 | 2016-09-14 | 青岛理工大学 | Novel Sb in-situ detoxification method for polluted site |
| CN105945050A (en) * | 2016-05-30 | 2016-09-21 | 青岛理工大学 | Biogas residue-based hexavalent chromium heavily-polluted site in-situ detoxification method |
| CN105945053A (en) * | 2016-05-30 | 2016-09-21 | 青岛理工大学 | Novel contaminated site Pb in-situ detoxification method based on biogas residues |
| CN105935698A (en) * | 2016-05-30 | 2016-09-14 | 青岛理工大学 | Novel Cu in-situ detoxification method for contaminated site |
| CN106489340A (en) * | 2016-10-18 | 2017-03-15 | 沈阳建筑大学 | A kind of sludge blends the device and method of improving desert soil earth with desert soil |
| CN106489340B (en) * | 2016-10-18 | 2020-01-03 | 沈阳建筑大学 | Method for improving desert soil by mixing sludge and desert soil |
| CN108299066A (en) * | 2017-09-25 | 2018-07-20 | 路德环境科技股份有限公司 | The production method of Chinese garden planting soil |
| CN109486494A (en) * | 2018-09-18 | 2019-03-19 | 魏菊宁 | A kind of soil-repairing agent and preparation method thereof |
| CN109486494B (en) * | 2018-09-18 | 2021-02-02 | 浙江弄潮儿智慧科技有限公司 | Soil remediation agent and preparation method thereof |
| CN110663503A (en) * | 2019-11-01 | 2020-01-10 | 浙江省农业科学院 | Rice seedling raising substrate and preparation method thereof |
| CN115043559A (en) * | 2022-06-15 | 2022-09-13 | 沧州冀环威立雅环境服务有限公司 | Comprehensive treatment process for high-iron waste hydrochloric acid and hexavalent chromium-containing sludge |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Open date: 20090422 |