CN102267793B - Dehydrating method for sludge - Google Patents
Dehydrating method for sludge Download PDFInfo
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- CN102267793B CN102267793B CN201110222130.6A CN201110222130A CN102267793B CN 102267793 B CN102267793 B CN 102267793B CN 201110222130 A CN201110222130 A CN 201110222130A CN 102267793 B CN102267793 B CN 102267793B
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- well
- mud
- sludge sump
- steel concrete
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Abstract
The invention relates to treatment of sludge, in particular to a dehydrating method for sludge, belonging to the technical field of environmental protection. The method comprises the following steps of: excavating a chuck hole, setting a dewatering well, arranging an electrode in the middle of the chuck groove, draining water in the sludge into a water well pipe for dehydrating by using an electrophoresis method; and forming a reinforced concrete chuck hole, draining moisture in the sludge by using a vacuum dewatering method, and extracting moisture from the sludge by using a gravity method or a vacuum method. The method is a most effective, cheapest and most complete sludge dehydrating method; and according to the method, waste is utilized, and harmful substances are changed into valuable.
Description
Technical field
The present invention relates to a kind of processing of mud, be specifically related to a kind of dewatering of mud, belong to environmental protection technical field.
Background technology
The looks that modernization construction is progressively being lifted oneself out of poverty and backwardness China, but also for we have manufactured a large amount of sewage and mud.The nineties in last century, there are 78 sewage works in 40 cities of China, and nineteen ninety-five, sewage work is increased to 122, and 2000, exceed 400 sewage works, in June, 2010, sewage work has become 2389.After sewage load increases, the consequent is a large amount of mud that produce.Mud is the product after sewage disposal, is a kind of extremely complicated heterogeneous body being comprised of organic relic, bacterium thalline, inorganic particle, colloid etc.The main characteristic of mud is water ratio high (can up to more than 99%), and organic content is high, easily degenerates smellyly, and particle is thinner, and proportion is less, is gluey liquid.It is the concentrated thing between liquid and solid, can transport with pump, but it is difficult to carry out solid-liquid separation by sedimentation.As the saying goes " messy ", no matter take which kind of mode, dehydration is all the prerequisite that sludge treatment is disposed.But " moisture of the squeezing out " not a duck soup also as far as possible of trying every possible means from mud.The relative merits of existing mud dewatering method: 1, heat energy method of evaporation, this is the most flat-footed method of one, simple and easy to do, but it is too high to consume energy, the mud of 1 ton of 80% water ratio of every processing, deviate from 200 kilograms of moisture just can become the mud of 75% water ratio, and adopts the method for heat energy evaporation, just need to consume 25 kilograms of coals, or 18.3 cubic metres of Sweet natural gases.Adopt the main drying technique such as Sweet natural gas mummification, steam mummification, lime mummification, to make mud finally can be used in landfill or burning, although this is available for the little fowl and animal excrement for the treatment of capacity, cost is too high.The mud of the sewage work having a large capacity and a wide range for China and river embankment mud may not solve; 2, utilize water extracter to process, main sludge dewatering facility has: plate-and-frame filter press, belt type dewaterer and centrifuge.Because needs and concentration basin are used in conjunction with, these facilities are fixing construction in sludge treatment field usually, and have that energy consumption is high, noise large more, the drawback such as large takes up room.
Summary of the invention
The object of the invention is, for overcoming above-mentioned the deficiencies in the prior art part, provides a kind of dewatering of mud.The method comprises excavation hole groove, dewatering well is set, and electrode is set in the middle of groove, adopts the method for electrophoresis to make the water drive in mud arrive in the dehydration of well pipe; Reinforced concrete heatable adobe sleeping platform groove is set, and adopt the method for vacuum-dewatering to get rid of the moisture content in mud, utilize gravity dehydration method and vacuum dehydration method to solve sludge dewatering problem, mud actual constituent is the fluid substance of solid, liquid, gas unification, taking gravity method or vacuum method that moisture in mud is extracted out, is the most effective, the most cheap, mud dewatering method the most thoroughly, accomplish utilization of waste material, change harmful to treasure.
The present invention realizes with following technical scheme: a kind of dewatering of mud, is characterized in that: the method comprises excavation hole groove, dewatering well is set, and electrode is set in the middle of groove, adopts the method for electrophoresis that the water drive in mud is arrived in to the dehydration of well pipe; Reinforced concrete heatable adobe sleeping platform groove is set, and adopts the method for vacuum-dewatering to get rid of the moisture content in mud, specifically carry out as follows:
(1) soil layer of good water permeability area blowdown mud: directly excavation hole groove, hole groove depth 4-5 rice, width 4-5 rice, injects mud to cheat groove, the surrounding guard rail rod of setting up defences, and hang safety sign board;
(2) the bad soil layer of water-permeable area blowdown mud: at the brick barricade of hole trough rim of step (1), fill filter sand layer (500-1000mm is thick), mud is injected and cheats groove, the surrounding guard rail rod of setting up defences, and hang safety sign board;
(3) mud is injected to hole groove, in groove one side (or both sides), light-duty precipitation well point is set; The surrounding guard rail rod of setting up defences arranges electrode in the middle of groove, the water drive in mud is arrived in to well-point pipe by the method for electrophoresis; The surrounding guard rail rod of setting up defences, and hang safety sign board;
(4) be arranged on the Steel Concrete sludge sump on support: sludge sump degree of depth 4-5 rice, sludge sump in length and breadth to pump well being set every 2.4 meters, pump well diameter 500-600mm, the pump well degree of depth by sludge sump at the bottom of downward 500mm;
(5) chimney filter is set in the pump well of sludge sump: chimney filter is length 500mm (at the bottom of being no more than sludge sump) in pump well, makes with the weldless steel tube of diameter 48mm or 51mm; The circular hole that bores 8-10mm diameter on chimney filter every 50mm, becomes quincuncial arrangement; Chimney filter around wraps up as filter screen with burlap etc., and in pump well, chimney filter fills medium coarse sand filtering layer around; Chimney filter upper port is welded, lower end is connected with well-point pipe, and well-point pipe, through being embedded in Steel Concrete middle sleeve, is connected by transparent tube with the underfloor water header of sludge sump, between well-point pipe and sleeve pipe, use bitumen-dipped hemp jam-pack, be connected by transparent tube with the underfloor water header of sludge sump;
(6) on water header, every 2.4m, in same direction, open the hole of diameter 40-42mm, weld same towards, diameter 48mm, the short tube of length 150mm, between short tube and well-point pipe, with transparent plastics short tube, be connected, firm with iron wire colligation, water header one end is welded, and the other end is connected with vacuum pump, water pump;
(7), before injecting sludge sump, first at the full bedding thickness in sludge sump bottom, be not less than the medium coarse sand that 500mm is thick.
Advantage of the present invention is: the method comprises excavation hole groove, dewatering well is set, and electrode is set in the middle of groove, adopts the method for electrophoresis to make the water drive in mud arrive in the dehydration of well pipe; Reinforced concrete heatable adobe sleeping platform groove is set, and adopt the method for vacuum-dewatering to get rid of the moisture content in mud, utilize gravity dehydration method and vacuum dehydration method to solve sludge dewatering problem, take gravity method or vacuum method that moisture in mud is extracted out, the most effective, the most cheap, mud dewatering method the most thoroughly, accomplish utilization of waste material, changes harmful to treasure.
Embodiment
Embodiment,
The method comprises excavation hole groove, dewatering well is set, and electrode is set in the middle of groove, adopts the method for electrophoresis that the water drive in mud is arrived in to the dehydration of well pipe; Reinforced concrete heatable adobe sleeping platform groove is set, and adopts the method for vacuum-dewatering to get rid of the moisture content in mud, specifically carry out as follows:
(1) soil layer of good water permeability area blowdown mud: directly excavation hole groove, hole groove depth 4-5 rice, width 4-5 rice, injects mud to cheat groove, the surrounding guard rail rod of setting up defences, and hang safety sign board;
(2) the bad soil layer of water-permeable area blowdown mud: at the brick barricade of hole trough rim of step (1), fill filter sand layer (500-1000mm is thick), mud is injected and cheats groove, the surrounding guard rail rod of setting up defences, and hang safety sign board;
(3) mud is injected to hole groove, in groove one side (or both sides), light-duty precipitation well point is set; The surrounding guard rail rod of setting up defences arranges electrode in the middle of groove, the water drive in mud is arrived in to well-point pipe by the method for electrophoresis; The surrounding guard rail rod of setting up defences, and hang safety sign board;
(4) be arranged on the Steel Concrete sludge sump on support: sludge sump degree of depth 4-5 rice, sludge sump in length and breadth to pump well being set every 2.4 meters, pump well diameter 500-600mm, the pump well degree of depth by sludge sump at the bottom of downward 500mm;
(5) chimney filter is set in the pump well of sludge sump: chimney filter is length 500mm (at the bottom of being no more than sludge sump) in pump well, makes with the weldless steel tube of diameter 48mm or 51mm; The circular hole that bores 8-10mm diameter on chimney filter every 50mm, becomes quincuncial arrangement; Chimney filter around wraps up as filter screen with burlap etc., and in pump well, chimney filter fills medium coarse sand filtering layer around; Chimney filter upper port is welded, lower end is connected with well-point pipe, and well-point pipe, through being embedded in Steel Concrete middle sleeve, is connected by transparent tube with the underfloor water header of sludge sump, between well-point pipe and sleeve pipe, use bitumen-dipped hemp jam-pack, be connected by transparent tube with the underfloor water header of sludge sump;
(6) on water header, every 2.4m, in same direction, open the hole of diameter 40-42mm, weld same towards, diameter 48mm, the short tube of length 150mm, between short tube and well-point pipe, with transparent plastics short tube, be connected, firm with iron wire colligation, water header one end is welded, and the other end is connected with vacuum pump, water pump;
(7), before injecting sludge sump, first at the full bedding thickness in sludge sump bottom, be not less than the medium coarse sand that 500mm is thick.
Claims (1)
1. a dewatering for mud, is characterized in that: the method comprises excavation hole groove, dewatering well is set, and in the middle of the groove of hole, electrode is set, and adopts the method for electrophoresis that the water drive in mud is arrived in to well-point pipe dehydration; Steel Concrete sludge sump is set, and adopts the method for vacuum-dewatering to get rid of the moisture content in mud, specifically carry out as follows:
(1) soil layer of good water permeability area blowdown mud: directly excavation hole groove, hole groove depth 4-5 rice, width 4-5 rice, injects mud to cheat groove, the surrounding guard rail rod of setting up defences, and hang safety sign board;
(2) the bad soil layer of water-permeable area blowdown mud: at the brick barricade of hole trough rim of step (1), fill filter sand layer 500-1000mm thick, mud is injected to hole groove, cheat the groove surrounding guard rail rod of setting up defences, and hang safety sign board;
(3) mud is injected to hole groove, in groove one or both sides, hole, light-duty precipitation well point is set; In hole, electrode is set in the middle of groove, the water drive in mud is arrived in to well-point pipe by the method for electrophoresis; At the hole groove surrounding guard rail rod of setting up defences, and hang safety sign board;
(4) be arranged on the Steel Concrete sludge sump on support: Steel Concrete sludge sump degree of depth 4-5 rice, Steel Concrete sludge sump in length and breadth to every 2.4 meters, pump well being set, pump well diameter 500-600mm, the pump well degree of depth by Steel Concrete sludge sump at the bottom of downward 500mm;
(5) chimney filter is set in the pump well of Steel Concrete sludge sump: chimney filter is at the bottom of length 500mm is no more than Steel Concrete sludge sump in pump well, makes with the weldless steel tube of diameter 48mm or 51mm; The circular hole that bores 8-10mm diameter on chimney filter every 50mm, becomes quincuncial arrangement; Chimney filter around wraps up as filter screen with burlap, and in pump well, chimney filter fills medium coarse sand filtering layer around; Chimney filter upper port is welded, lower end is connected with well-point pipe, well-point pipe is through being embedded in Steel Concrete middle sleeve, be connected by transparent tube with the underfloor water header of Steel Concrete sludge sump, between well-point pipe and sleeve pipe, use bitumen-dipped hemp jam-pack, be connected by transparent tube with the underfloor water header of Steel Concrete sludge sump;
(6) on water header, every 2.4m, in same direction, open the hole of diameter 40-42mm, weld same towards, diameter 48mm, the short tube of length 150mm, between short tube and well-point pipe, with transparent plastics short tube, be connected, firm with iron wire colligation, water header one end is welded, and the other end is connected with vacuum pump, water pump;
(7), before injecting Steel Concrete sludge sump, first at the full bedding thickness in Steel Concrete sludge sump bottom, be not less than the medium coarse sand that 500mm is thick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110222130.6A CN102267793B (en) | 2011-07-28 | 2011-07-28 | Dehydrating method for sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110222130.6A CN102267793B (en) | 2011-07-28 | 2011-07-28 | Dehydrating method for sludge |
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| Publication Number | Publication Date |
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| CN102267793A CN102267793A (en) | 2011-12-07 |
| CN102267793B true CN102267793B (en) | 2014-04-16 |
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| CN201110222130.6A Expired - Fee Related CN102267793B (en) | 2011-07-28 | 2011-07-28 | Dehydrating method for sludge |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102814079B (en) * | 2012-08-31 | 2015-03-25 | 河海大学 | Concentration system for rapidly concentrating slurry |
| CN105036508A (en) * | 2015-06-12 | 2015-11-11 | 中国电建集团贵阳勘测设计研究院有限公司 | Method and device for solidifying sludge by virtue of vacuum electric osmosis combined dynamic load |
| CN109179966A (en) * | 2018-09-18 | 2019-01-11 | 北京中岩大地科技股份有限公司 | A kind of apparatus and method that direct current decontaminates the dehydration of factory's waste residue in conjunction with gravity |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101311133A (en) * | 2008-02-05 | 2008-11-26 | 陈江涛 | Tank type electroosmosis sludge soil reproducing method and device thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101311133A (en) * | 2008-02-05 | 2008-11-26 | 陈江涛 | Tank type electroosmosis sludge soil reproducing method and device thereof |
Non-Patent Citations (1)
| Title |
|---|
| 徐晓军等.污泥处理与资源化.《固体废物污染控制原理与资源化技术》.北京：冶金工业出版社,2007,第270-271页. * |
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| CN102267793A (en) | 2011-12-07 |
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Granted publication date: 20140416 Termination date: 20180728 |