CN101723571A - Sludge deep dehydration method - Google Patents
Sludge deep dehydration method Download PDFInfo
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- CN101723571A CN101723571A CN200910155092A CN200910155092A CN101723571A CN 101723571 A CN101723571 A CN 101723571A CN 200910155092 A CN200910155092 A CN 200910155092A CN 200910155092 A CN200910155092 A CN 200910155092A CN 101723571 A CN101723571 A CN 101723571A
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Abstract
The invention relates to a sludge deep dehydration method which has favorable dehydration effect, saves energy and is environmental friendly. In the method, a dehydrating agent adding system, an air filtration and treatment system and a filtration dehydration system are provided. A charge pump is arranged between the dehydrating agent adding system and the air filtration and treatment system which are communicated by a pipeline; the air filtration and treatment system and the filtration dehydration system are communicated by a pipeline; a guide bucket and a water outlet are arranged at the bottom of a dehydrater in the filtration dehydration system, and the guide bucket is mounted on a conveyer. The invention has the following advantages that, firstly, the sludge dehydration rate is high, and the water content of the sludge can reach 50-58%; secondly, the filtering efficiency is high, and the filtering cycle can be shortened to less than 20 min; thirdly, the filtered water can be recycled, and the water resource is saved; fourthly, the dehydrater is utilized, the high pressure resistance, the antiseptic performance and the sealing performance are favorable, the dehydration ratio of a filter cake is high, the washing is uniform and thorough and the dehydration speed is fast; fifthly, the automatic degree is high; and sixthly, the operation is safe.
Description
Technical field
The present invention relates to that a kind of dehydrating effect is good, the deep dehydration method for sludge of energy-conserving and environment-protective, belong to sludge dehydration device and make the field.
Background technology
Along with popularizing of Chinese city sewage work, sludge yield increases continuously and healthily.According to statistics, the about forty-two million ton of the generation of present Chinese mud (water ratio 80%)/year, annual also with the speed increment more than 15%.The Chinese city Sewage Plant generally adopts mechanical system that mud is dewatered, and the dewatered sludge water ratio is colloid bonding shape generally 75～85%, corrupt easily smelly, cause secondary pollution, and also may cause secondary pollution in transit, can not satisfy environmental requirement.At present common mud subsequent disposal disposal means such as compost, burning, landfill etc. all require water ratio below 60%, and this has directly caused banking up up to the direct outward transport of 83% dewatered sludge, is not effectively disposed.
As CN201245540, title " a kind of sludge dehydration device ", this utility model adopts carbon steel material, is made into a tetragonal body device.Feed-pipe is established on device top, and water leg is established in the middle part, and upper end welding reinforcing mat in groove both sides at the upstream face of reinforcing mat embedding dabbing towel and fiber filter cloth successively, and is pressed and tightly closed.In the both sides, lower end of water leg, a boring aeration pipe is installed respectively.In water leg, water shoot is set is connected to outside the device.Its weak point: the one, dewatering rate is low; The 2nd, dewatering efficiency is low.
Summary of the invention
Purpose of design: avoid the weak point in the background technology, design that a kind of dehydrating effect is good, the deep dehydration method for sludge of energy-conserving and environment-protective.
Design: in order to realize the foregoing invention purpose.1, whole dehydration and drying all-in-one is made of by pipe connection successively dewatering agent add-on system, air filtration treatment system and filter dehydration system, and be provided with the design of fresh feed pump between air filtration treatment system and filter dehydration system, this is one of technical characterictic of the present invention.The purpose of doing like this is: lime and the liquid pharmaceutical delivery system by separately respectively enter equalizing tank and stir the back and enter in two water extracters by fresh feed pump with sewage, treated filter cake and filtered water are discharged from the dehydration and drying all-in-one respectively, whole device dehydration rate height, filtration cycle is short, level of automation is high, energy-conserving and environment-protective, and whole dehydration and drying process all concentrates in the device, the processing efficiency height, cost is low.2, filtering system adopts water extracter to have the design of variable diaphragm pressing mud, and this is three of a technical characterictic of the present invention.The purpose of doing like this is: the anticorrosion and good seal performance of dewatering elements, cake dewatering rate height, washing uniform and complete, dewatering speed are fast.The design that the filtered liquid water outlet of 3 filter dehydration systems and service link to each other with the water-in of water supply system, this is three of a technical characterictic of the present invention.Such purpose is: filtered water can recycle, and has saved water resources.
Technical scheme: a kind of deep dehydration method for sludge, it comprises dewatering agent add-on system, air filtration treatment system and filter dehydration system, be provided with fresh feed pump between described dewatering agent add-on system and the air filtration treatment system and be communicated with by pipeline, the air filtration treatment system links to each other by pipeline with the filter dehydration system, water extracter in the filter dehydration system adopts Chamber Type Diaphragm Filter Press, and be provided with in the bottom of water extracter and lead bucket and water outlet, lead bucket and be installed on the transfer roller.
The present invention compares with background technology, and the one, the dewatering rate height, sludge moisture content can reach 50%～58%; The 2nd, the filtration efficiency height can foreshorten in 120 minutes filtration cycle; The 3rd, filtered water can be recycled, and has saved water resources; Four water extracters that are to use, high pressure resistant, anticorrosion and good seal performance, cake dewatering rate height, washing uniform and complete, dewatering speed are fast; The 5th, the level of automation height; The 6th, operational safety.
Description of drawings
Fig. 1 is the process flow sheet of air filtration treatment system and dewatering agent add-on system.
Fig. 2 is the process flow sheet of filtering system.
Fig. 3 is the process flow sheet of service with water supply system.
Embodiment
Embodiment 1: with reference to accompanying drawing 1～3.A kind of deep dehydration method for sludge, it comprises dewatering agent add-on system 1, air filtration treatment system 2 and filter dehydration system 3, be provided with fresh feed pump 8 between described dewatering agent add-on system 1 and the air filtration treatment system 2 and be communicated with by pipeline, air filtration treatment system 2 and filter dehydration system 3 link to each other by pipeline, and the filtered water water outlet 21 of filter dehydration system 3 links to each other with the water-in of service with water supply system 23, water extracter 13 water extracters in the filter dehydration system 3 have variable filter chamber diaphragm pressing filter cake, and be provided with in the bottom of water extracter 13 and lead bucket 15 and water outlet 16, lead bucket 15 and be installed on the transfer roller 17.Described dewatering agent add-on system 1 uses lime and liquid pharmaceutical as dewatering agent, and the lime in the lime jar 18 is delivered to equalizing tank 9 by worm conveyor 19 and is provided with electronic weighing balance 20 at worm conveyor 19 discharge port places, and and is delivered to liquid pharmaceutical equalizing tank 9 in by dosing pump 12 by 10 stirrings of the stirrer in the equalizing tank 9.Described air filtration treatment system 2 is made up of two air compressor machines 4 and two technology gas tanks 5, the production well of air compressor machine 4 and technology gas tank 5 inlet mouths pass through pipe connection, an air outlet of one of them technology gas tank 5 links to each other with fresh feed pump 8 by pipeline, another air outlet is connected with water extracter 13 by pipeline, and is provided with air filtration pressure regulation mist of oil three valves 6 between water extracter 13 and technology gas tank 5.Described air compressor machine 4 is provided with safety valve outlet 22 with technology gas tank 5, discharges by pipeline when surpassing safe pressure.Described fresh feed pump 6 has three and be provided with water-in and link to each other with water supply system 23 with service by pipeline, and is provided with air filtration pressure regulation mist of oil three valves 7 between fresh feed pump 6 and technology gas tank 5.Described service is connected with filtered water tank 24 by pipeline with the water inlet of water supply system 23, the water inlet of the outlet of filtered water tank 24 and press pump 25 passes through pipe connection, the water outlet of press pump 25 and water extracter 13 water-ins are by pipe connection, and described service is with being provided with two press pumps 25 in the water supply system 23.
What need understand is: though the foregoing description is to the present invention's detailed text description of contrasting; but these text descriptions; just the simple text of mentality of designing of the present invention is described; rather than to the restriction of utility model mentality of designing; any combination, increase or modification that does not exceed mentality of designing of the present invention all falls within the scope of protection of the present invention.
Claims (9)
1. deep dehydration method for sludge, it comprises the dewatering agent add-on system, air filtration treatment system and filter dehydration system, it is characterized in that: be provided with fresh feed pump between described dewatering agent add-on system and the air filtration treatment system and be communicated with by pipeline, the air filtration treatment system links to each other by pipeline with the filter dehydration system, and the filtered water water outlet of filter dehydration system links to each other with the water-in of service with water supply system, water extracter water extracter in the filter dehydration system has variable filter chamber diaphragm pressing sludge function, and be provided with in the bottom of water extracter and lead bucket and water port, lead bucket and be installed on the transfer roller.
2. deep dehydration method for sludge according to claim 1, it is characterized in that: described dewatering agent add-on system uses lime and liquid pharmaceutical as dewatering agent, the lime in the lime jar by worm conveyor be delivered to equalizing tank, and and the liquid pharmaceutical that is delivered in the equalizing tank by dosing pump stir by the stirrer in the equalizing tank.
3. deep dehydration method for sludge according to claim 1, it is characterized in that: described air filtration treatment system is made up of two air compressor machines and two technology gas tanks, the production well of air compressor machine and process gas canister incoming gas mouth pass through pipe connection, an air outlet of one of them technology gas tank links to each other with fresh feed pump by pipeline, another air outlet is connected with water extracter by pipeline, and is provided with air filtration pressure regulation mist of oil three valves between water extracter and technology gas tank.
4. deep dehydration method for sludge according to claim 1 is characterized in that: described water extracter is controlled by Hydraulic Station.
5. deep dehydration method for sludge according to claim 3 is characterized in that: described air compressor machine and technology gas tank are provided with the safety valve venting port, and air is discharged by pipeline when gas tank pressure surpasses safe pressure.
6. deep dehydration method for sludge according to claim 1, it is characterized in that: described fresh feed pump has three and be provided with water-in and link to each other with water supply system with service by pipeline, and is provided with air filtration pressure regulation mist of oil three valves between fresh feed pump and technology gas tank.
7. deep dehydration method for sludge according to claim 2 is characterized in that: described worm conveyor discharge port place is provided with electronic weighing balance.
8. deep dehydration method for sludge according to claim 6, it is characterized in that: described service is connected with filtered water tank by pipeline with the water inlet of water supply system, the outlet of filtered water tank and the water inlet of press pump are by pipe connection, and the water outlet of press pump and water extracter water-in pass through pipe connection.
9. deep dehydration method for sludge according to claim 8 is characterized in that: described service is with being provided with two press pumps in the water supply system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910155092A CN101723571A (en) | 2009-12-21 | 2009-12-21 | Sludge deep dehydration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910155092A CN101723571A (en) | 2009-12-21 | 2009-12-21 | Sludge deep dehydration method |
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| CN101723571A true CN101723571A (en) | 2010-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910155092A Pending CN101723571A (en) | 2009-12-21 | 2009-12-21 | Sludge deep dehydration method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104140186A (en) * | 2014-08-14 | 2014-11-12 | 中南大学 | High-efficiency energy-saving system for heating and adding chemicals for conditioning and modification treatment on sludge with high organic matter content |
-
2009
- 2009-12-21 CN CN200910155092A patent/CN101723571A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104140186A (en) * | 2014-08-14 | 2014-11-12 | 中南大学 | High-efficiency energy-saving system for heating and adding chemicals for conditioning and modification treatment on sludge with high organic matter content |
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Application publication date: 20100609 |