CN104386899B - The efficient autocontrol method of a kind of deeply dehydrating sludge - Google Patents
The efficient autocontrol method of a kind of deeply dehydrating sludge Download PDFInfo
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- CN104386899B CN104386899B CN201410089704.0A CN201410089704A CN104386899B CN 104386899 B CN104386899 B CN 104386899B CN 201410089704 A CN201410089704 A CN 201410089704A CN 104386899 B CN104386899 B CN 104386899B
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- 239000010802 sludge Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000009790 rate-determining step (RDS) Methods 0.000 claims abstract description 16
- 230000008719 thickening Effects 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 14
- 230000003750 conditioning effect Effects 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 9
- 239000003814 drug Substances 0.000 claims description 7
- 238000004094 preconcentration Methods 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 3
- 229940126589 solid medicine Drugs 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000000151 deposition Methods 0.000 claims description 2
- 230000003203 everyday effect Effects 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 238000005496 tempering Methods 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims 1
- 238000005086 pumping Methods 0.000 claims 1
- 239000002562 thickening agent Substances 0.000 claims 1
- 230000026676 system process Effects 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000007711 solidification Methods 0.000 abstract description 3
- 230000008023 solidification Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 description 4
- 239000010865 sewage Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000002361 compost Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention discloses the efficient autocontrol method of a kind of deeply dehydrating sludge, comprises sludge pre-thickening rate-determining steps, the modified rate-determining steps of mud, pressure filter rate-determining steps, mud cake transfer control step; Native system is provided with control and Non-follow control two kinds of patterns automatically, and the lower system of control is run automatically by parameter preset automatically, each link can be controlled, adjusts under Non-follow control. The dewatered sludge obtained through native system process is block in solidification, without percolate, without obvious stink, is beneficial to landfill, burning, Land_use change etc. and disposes further, it is to increase the processing efficiency of sludge dewatering system and security, saving manpower.
Description
Technical field
The present invention relates to the technical field of sludge treatment, in particular to a kind of deeply dehydrating sludge whole process automatic control system.
Background technology
Accelerating and the increasingly stringent of environmental standard along with urbanization process, the dynamics of investment for environmental improvement is strengthened greatly, in recent years domestic newly-built large quantities of sewage work, and mud generation improves year by year. To the end of the year in 2011, the built sewage work 3135 in the whole nation, sewage treatment capacity 1.36 hundred million m3��d-1; Estimate to produce moisture 2,700 ten thousand tons, 80% mud every year in the five-year. Mud is the solid waste of a kind of complicated component, if do not dealt carefully with disposal, can produce very big environmental hazard. Owing to the mud that water ratio is higher is difficult to meet the follow-up disposal requirements such as compost, landfill, pyrolysis, burning, and minimizing is not remarkable, add transportation cost and difficulty, therefore general office of environmental protection portion clearly proposes in the file " notices about strengthening urban wastewater treatment firm sludge pollution preventing and controlling " put into effect for 2010 that " mud is transported factory circle for the purpose of (namely not processing disposal) to store by sewage work, it is necessary to by sludge dewatering to water ratio less than 50%. "
The modified filter press technique of sludge chemical obtains approving in the industry high praise in recent years gradually, whole system comprises the plates such as sludge pre-thickening, chemical conditioning, filter press, mud cake conveying, and chemical conditioning requires to there is multiple conditioner toward contact simultaneously thus ensures to reduce idleness of equipment time, raising day treatment capacity. How the raising that required by operating condition due to the expansion of sludge treatment scale, staff and to the high efficiency pursuit of sludge treatment, realize that sludge dewatering system is efficient, stable, automatic operating becomes problem demanding prompt solution. But the domestic achievement obtained in this respect is also few at present.
" a kind of deeply dehydrating sludge whole process automatic control system and treatment process " (number of patent application 201210499177.1) of Guangzhou Shenyang Inst of Automation, Chinese Academy of Sciences point place in February, 2013 Shen Qing Publication is a kind of exploration actively deeply dehydrating sludge whole process automatically controlled.The method includes parameter measurement in Controlling System, in the hope of chemical feeding quantity and working time are revised, it it is a kind of very fine imagination, but practical situation are, in system the parameters of mud can not within the short period of time whole on-line checkingi complete and feed back to Controlling System, and the method required for sludge quality and settling time, added amount of chemical and dewatering performance of sludge, many complex parameters building databases such as equipment electricity consumption and medicament expense cost, inherently one needs long period and what mass data was supported, and mud enters treatment system continually during actual motion, the mud physico-chemical property that each cross section enters may be different, the real time measure adjusts in real time, may forever not have steadiness parameter, even if can realize, the equipment requirements of configuration is also very high, during operation the damage of equipment is also very big. the method seems rationally feasible, but in fact operability is lower.
Summary of the invention
It is an object of the invention to provide a kind of can improve sludge dewatering system processing efficiency and security, saving manpower the efficient automatic control system of a kind of deeply dehydrating sludge.
The technical solution of the present invention is: a kind of efficient autocontrol method of deeply dehydrating sludge, comprises sludge pre-thickening rate-determining steps, the modified rate-determining steps of mud, pressure filter rate-determining steps, mud cake transfer control step; Described sludge pre-thickening rate-determining steps major control sludge pre-thickening process section, comprises concentration basin, sludge pump, valve etc.; Described mud modified rate-determining steps major control mud hardening and tempering process section, comprises conditioner, liquid state and solid-state amendment and stores feed bin or storage tank, agitator, sludge pump, dosing pump, worm conveyor under meter, liquidometer, valve etc.; Described pressure filter rate-determining steps major control mud filter-pressing process section, comprises pressure filter, clean-out system storage tank, air compressor machine, sludge pump, pressure warning unit, valve etc.; Described mud cake transfer control step major control mud cake travelling belt and mud canopy process section.
This automatic control system adopts PLC control technology, adopts cable to connect, and take computer as operation terminal, can check system components operating mode on system operation interface, and all multiparameters of the links such as pre-concentration, conditioning, press filtration can be arranged by operator; This automatic control system is provided with control and Non-follow control two kinds of patterns automatically, and the lower system of control is run automatically by parameter preset automatically, each link can be controlled, adjusts under Non-follow control. Wherein, it is preferable that, sludge concentration meter can be added in the pre-concentration stage.
It is an advantage of the invention that: autocontrol method provided by the invention is to meet for the purpose of practical engineering application, in long-term actual application, each link is modified perfect, finally obtain there is total system operating in a key, each link have manual and automatic two grades of parameters optional, concrete can the deeply dehydrating sludge whole-process high-efficiency automation control system of the distinct advantage such as adjustment at any time. The dewatered sludge obtained through native system control treatment is block in solidification, without percolate, without obvious stink, being beneficial to landfill, burning, Land_use change etc. to dispose further, processing efficiency that the present invention can improve sludge dewatering system, the efficient stable realizing each link equipment run, reduce failure rate, improve security, have greatly saved manpower and materials.
Accompanying drawing explanation
Fig. 1 is this automatic control system process flow sheet one.
Fig. 2 is this automatic control system process flow sheet two.
Embodiment
Below in conjunction with accompanying drawing, by specific embodiment, technical solutions of the utility model are described further.
As shown in Figure 1 and Figure 2, Fig. 1, Fig. 2 are this automatic control system process flow sheet. Its operational path is: second pond 1 mud enters concentration basin 3 through sludge pump 2, through the pre-concentration of 8-24 hour in concentration basin, it is achieved mud-water separation to a certain degree; The actual liquid level detected by liquidometer compares the opening and closing of control water outlet motorized valve 4,5,6 with preset value; Mud sludge pump 7,8 after concentrated delivers into mud conditioner 9,10,11, pneumavalve 12,13,14 controls the conveying of the concentrated rear mud of conditioning, mud liquidometer 15,16,17 is installed above conditioner 9,10,11, is judged whether turn on agitator 18,19,20 and medicament feeding unit 23,24,25 by the observed value of liquidometer 15,16,17; Depositing amendment in liquid medicine tank 21 and solid medicine storehouse 22, amendment is squeezed in conditioner 9,10,11 through volume pump 23 or 24 and worm conveyor 25, connects measuring apparatus 26 after worm conveyor, by the stopping of default time controling adding of agent device; Mud sludge pump 27 or 28 through chemical conditioning is squeezed in two diaphragm pressure filter 29, stopped by default time or default pump vacuum cavitations charging, when charging stops, open motorized valve 30, air enters in the filter plate of pressure filter 29 and is squeezed by mud, after press filtration terminates, mud cake is delivered to mud canopy outward by rotary conveyor 31. In addition, open a motorized valve 32 every day, clean in defeated mud passage and pressure filter by the rinse water cleaned in water pot 33; Monthly open Primary pumps 34, with the citric acid in citric acid tank 35 to clean in defeated mud passage and pressure filter.
The efficient automatic control system of the deeply dehydrating sludge of the present embodiment, the steps include: to be conveyed into mud concentration basin 3, opens water outlet motorized valve when the liquid level height value of supernatant liquor reaches 4.5m; Mud after pre-concentration is conveyed into mud conditioner, turn on agitator when liquid level reaches preset value 1m in pond, stop when in pond, liquid level reaches preset value 3.5m into mud, open volume pump 23, volume pump 23 is closed when record difference in flow reaches preset value 0.27m3, waiting and open worm conveyor 25 after 15 minutes, measuring apparatus 26 records closes worm conveyor 25 when difference reaches preset value 850kg, show conditioning complete after waiting 30min; In conditioner, the complete mud of conditioning squeezes into pressure filter 29 through sludge pump 27 or 28, defeated mud is stopped when reaching 90min during defeated mud, start to carry out two press filtrations, electronic valve 30 is closed when reaching 40min during press filtration, completing two press filtrations, pressure filter 29 starts to unload mud, opens rotary conveyor 31 simultaneously, mud cake is outwards carried through transfer roller, unload mud terminate 60s after rotary conveyor out of service.
The dewatered sludge water ratio obtained through native system process is about 45%-55%, block in solidification, without percolate, without obvious stink, it is beneficial to landfill, burning, Land_use change etc. to dispose further, it is possible to improve processing efficiency and security, the saving manpower of sludge dewatering system.
The foregoing is only the better embodiment of the present invention; not limit the practical range of the present invention with this, all be familiar with this skill patient, the principle of utilization the present invention and technology feature; the various change done and decoration, all should be covered by within the protection category that this claim book defines.
Claims (3)
1. an efficient autocontrol method for deeply dehydrating sludge, comprises sludge pre-thickening rate-determining steps, the modified rate-determining steps of mud, pressure filter rate-determining steps, mud cake transfer control step;It is characterized in that:
Described sludge pre-thickening rate-determining steps control sludge pre-thickening process section, sludge pre-thickening rate-determining steps adds sludge concentration meter; The modified rate-determining steps control mud hardening and tempering process section of described mud; Described pressure filter rate-determining steps control mud filter-pressing process section; Described mud cake transfer control step control mud cake travelling belt and mud canopy process section;
Mud enters sludge thickener through sludge pump, through pre-concentration in concentration basin, obtains mud-water separation to a certain extent; The actual liquid level detected by liquidometer compares the opening and closing of control water outlet motorized valve with preset value; Mud sludge pump after concentrated delivers into mud conditioner, and after concentrated by Liquid level conditioning, the conveying of mud, installs sludge concentration meter, judge whether into mud and turn on agitator by the observed value of sludge concentration meter above conditioner; Deposit amendment in liquid medicine tank and solid medicine storehouse, squeeze in conditioner through volume pump and worm conveyor, after medicament preparing pump, connect under meter; Squeezing in two diaphragm pressure filter through the mud sludge pump of chemical conditioning, when charging stops, opening motorized valve, air enters that the filter plate of pressure filter is interior to be squeezed mud, and after press filtration terminates, mud cake is delivered to mud canopy outward by rotary conveyor;
Mud is conveyed into concentration basin, according to the liquid level height value of supernatant liquor, the opening and closing of control supernatant liquor water outlet motorized valve; Mud after pre-concentration is conveyed into mud conditioner, turn on agitator when liquid level reaches the first preset value in pond, stop when in pond, liquid level reaches the 2nd preset value into mud, open amendment A volume pump, volume pump is closed when cmf record difference in flow reaches the 3rd preset value, open worm conveyor after waiting for a period of time and add amendment B, close volume pump when measuring apparatus record weight difference reaches the 4th preset value, show conditioning after waiting for a period of time complete; In conditioner, the complete mud of conditioning squeezes into pressure filter through sludge pump, stops defeated mud, starts to carry out press filtration, close electronic valve, complete pressure-filtering process when reaching preset value during press filtration when reaching preset value when pumping pressure reaches preset value or defeated mud; Opening rotary conveyor when pressure filter starts to unload mud, mud cake is outwards carried through transfer roller, and unloading mud, to terminate rear rotary conveyor out of service.
2. the efficient autocontrol method of deeply dehydrating sludge according to claim 1, it is characterised in that:
Second pond mud enters concentration basin through sludge pump, through the pre-concentration of 8-24 hour in concentration basin, it is achieved mud-water separation to a certain degree; The actual liquid level detected by liquidometer compares the opening and closing of control water outlet motorized valve with preset value; Mud sludge pump after concentrated delivers into mud conditioner, and after pneumavalve control conditioning is concentrated, the conveying of mud, is installed mud liquidometer, judged whether turn on agitator and medicament feeding unit by the observed value of liquidometer above conditioner; Depositing amendment in liquid medicine tank and solid medicine storehouse, amendment is squeezed in conditioner through volume pump and worm conveyor, connects measuring apparatus after worm conveyor, by the stopping of default time controling adding of agent device; Mud sludge pump through chemical conditioning is squeezed in two diaphragm pressure filter, stopped by default time or default pump vacuum cavitations charging, when charging stops, open motorized valve, air enters in the filter plate of pressure filter and is squeezed by mud, after press filtration terminates, mud cake is delivered to mud canopy outward by rotary conveyor;
Opening a rinse water cleaning system motorized valve every day, the rinse water cleaned in water pot is cleaned in defeated mud passage and pressure filter; Monthly opening a citric acid pump, the citric acid in citric acid tank cleans in defeated mud passage and pressure filter.
3. the efficient autocontrol method of deeply dehydrating sludge according to claim 1, it is characterised in that: adopt PLC control technology, adopt cable to connect, take computer as operation terminal, be provided with control and Non-follow control two kinds of patterns automatically.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410089704.0A CN104386899B (en) | 2014-03-13 | 2014-03-13 | The efficient autocontrol method of a kind of deeply dehydrating sludge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410089704.0A CN104386899B (en) | 2014-03-13 | 2014-03-13 | The efficient autocontrol method of a kind of deeply dehydrating sludge |
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| Publication Number | Publication Date |
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| CN104386899A CN104386899A (en) | 2015-03-04 |
| CN104386899B true CN104386899B (en) | 2016-06-08 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036514B (en) * | 2015-08-25 | 2017-03-29 | 浙江华章科技有限公司 | A kind of continuous deep dehydration intelligence control process of sludge |
| CN105645728A (en) * | 2016-04-08 | 2016-06-08 | 河南泽衡环保科技股份有限公司 | Control device of supernatant extracting device |
| CN106746480A (en) * | 2016-12-28 | 2017-05-31 | 江苏道科环境科技有限公司 | A kind of sludge dewatering conditioning system and method |
| CN108249732B (en) * | 2018-02-12 | 2019-01-22 | 山鹰国际控股股份公司 | A kind of paper mill sludge conditioning, dehydration, desiccation, incineration treatment technology |
| CN109553263A (en) * | 2018-12-29 | 2019-04-02 | 四川磊蒙机械设备有限公司 | Automatic integration of sludge concentrating and dewatering belt filter press control system |
| CN109626460B (en) * | 2019-02-11 | 2022-05-17 | 天津中新智冠信息技术有限公司 | Intelligent slime water treatment method and device |
| CN109647021A (en) * | 2019-02-25 | 2019-04-19 | 浙江杰为凯环保科技有限公司 | By the working method of the phosphating solution slagging-off filter press of PLC control |
| CN110615591A (en) * | 2019-10-16 | 2019-12-27 | 内蒙古硕达智水生态科技有限公司 | Sludge treatment equipment and sludge treatment method |
| CN110981146A (en) * | 2019-11-29 | 2020-04-10 | 浙江省疏浚工程有限公司 | Energy-saving and material-saving system of curing filter pressing equipment |
| CN112010532A (en) * | 2020-09-16 | 2020-12-01 | 北京城市排水集团有限责任公司清河第二再生水厂 | Sludge treatment system and sludge treatment method |
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| CN102936089A (en) * | 2012-11-28 | 2013-02-20 | 广州中国科学院沈阳自动化研究所分所 | Automatic control system of sludge deep dewatering overall process and treatment method |
| CN203128377U (en) * | 2013-01-23 | 2013-08-14 | 安徽中联水务工程技术有限公司 | Sludge drying integrated system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5710399A (en) * | 1980-06-20 | 1982-01-19 | Mitsubishi Kakoki Kaisha Ltd | Concentrating and dehydrating method for sludge generated from city water purification plant |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936089A (en) * | 2012-11-28 | 2013-02-20 | 广州中国科学院沈阳自动化研究所分所 | Automatic control system of sludge deep dewatering overall process and treatment method |
| CN203128377U (en) * | 2013-01-23 | 2013-08-14 | 安徽中联水务工程技术有限公司 | Sludge drying integrated system |
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Address after: Nanjing City, Jiangsu province Zhongshan North Road 210011 old school No. 350 Creative Park L District 6 floor Applicant after: JIANGSU DAOKE ENVIRONMENT TECHNOLOGY CO.,LTD. Address before: Nanjing City, Jiangsu province Zhongshan North Road 210011 Creative Park No. 350 old school district 401 room L Applicant before: NANJING DAOKE ENVIRONMENT TECHNOLOGY Co.,Ltd. |
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Inventor after: Shen Xiaomin Inventor after: Tao Xianbing Inventor after: Zhao Jinjun Inventor after: Qian Jin Inventor after: Tang Wei Inventor after: Jiang Shuyao Inventor after: Cheng Hua Inventor before: Tao Xianbing Inventor before: Zhao Jinjun Inventor before: Qian Jin Inventor before: Tang Wei Inventor before: Jiang Shuyao Inventor before: Cheng Hua |
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