CN106630532B - Tank-maintenance-free sludge treatment method with sludge concentration function - Google Patents
Tank-maintenance-free sludge treatment method with sludge concentration function Download PDFInfo
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- CN106630532B CN106630532B CN201611019510.9A CN201611019510A CN106630532B CN 106630532 B CN106630532 B CN 106630532B CN 201611019510 A CN201611019510 A CN 201611019510A CN 106630532 B CN106630532 B CN 106630532B
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- 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
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- 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
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Abstract
The invention discloses a sludge storage pool device with a sludge concentration function and without in-pool maintenance and a method thereof.A sludge storage pool is connected with a residual sludge inlet pipeline, a primary sludge inlet pipeline, an overflow pipeline, a high liquid level supernatant discharge pipeline, a medium liquid level supernatant discharge pipeline, a low liquid level supernatant discharge pipeline and a sludge discharge pipe; the sludge storage tank is provided with a stirrer, an ultrasonic liquid level meter and an ultrasonic sludge interface meter; feeding mud, stirring, statically settling, and discharging mud. The invention has the advantages of short construction period and quick assembly, can meet the sludge storage function, can obviously improve the sludge solid content and reduce the pressure of the subsequent concentration dehydration section.
Description
Technical Field
The invention relates to a sludge treatment method, in particular to a pond-maintenance-free sludge treatment method with a sludge concentration function.
Background
At present, the general sludge treatment process of the sewage treatment plant basically has three technical routes:
and firstly, discharging the residual sludge and the primary sludge into a sludge storage tank respectively, mixing, then feeding into a sludge concentration and dehydration integrated machine, and transporting a mud cake outwards or further processing the sludge.
And secondly, discharging the residual sludge into a sludge gravity concentration tank for gravity concentration, mixing the residual sludge with the primary sludge, then feeding the mixture into a sludge storage tank, then feeding the mixture into a sludge dewatering machine, and transporting a mud cake outwards or further performing sludge treatment.
And thirdly, discharging the residual sludge into a sludge storage tank, then feeding the residual sludge into a sludge thickener, mixing the residual sludge with primary sludge, then feeding the mixture into a sludge storage tank, then feeding the mixture into a sludge dewatering machine, and transporting a mud cake outwards or further carrying out sludge treatment.
Whatever the technical route, the adjustment is carried out through the sludge storage tank to match the flow relation between sludge discharge and concentration and dehydration. However, the existing sludge storage tank has the functions of simply adjusting flow and not concentrating, is generally of a concrete cast-in-place structure, needs to be additionally matched with electric automatic control, and has the main defects of long construction period, no sludge reduction function and difficult matching of various specialties during design and construction.
In addition, for upgrading and capacity expansion of a sewage treatment plant, due to the current situation of a sludge storage tank, the requirement of upgrading and capacity expansion is generally difficult to meet.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a tank-maintenance-free sludge treatment method with a sludge concentration function, which can be supplied in a set according to a certain specification according to the scale of a sewage treatment plant, has the advantages of short construction period and quick assembly, can meet the sludge storage function, can obviously improve the sludge solid content, and reduces the pressure of a subsequent concentration dehydration section.
The purpose of the invention can be realized by the following technical scheme.
The invention relates to a tank-maintenance-free sludge treatment method with a sludge concentration function, which adopts a tank-maintenance-free sludge storage device with the sludge concentration function, comprises a sludge storage tank, the sludge storage tanks adopt sequencing batch sludge storage tanks, each sludge storage tank is connected with a residual sludge inlet pipeline, a primary sludge inlet pipeline, an overflow pipeline, a high liquid level supernatant discharge pipeline, a medium liquid level supernatant discharge pipeline, a low liquid level supernatant discharge pipeline and a sludge discharge pipe, the residual sludge inlet pipeline and the primary sludge inlet pipeline are respectively provided with a first sludge inlet valve and a second sludge inlet valve, the sludge discharge pipe is provided with a sludge discharge valve, and the high liquid level supernatant discharge pipeline, the medium liquid level supernatant discharge pipeline and the low liquid level supernatant discharge pipeline are respectively provided with a first supernatant discharge valve, a second supernatant discharge valve and a third supernatant discharge valve; each sludge storage tank is provided with a stirrer, an ultrasonic liquid level meter and an ultrasonic sludge interface meter, the sludge storage tank is provided with an electric control cabinet, and each sludge storage tank adopts a sequencing batch operation mode and comprises the following operation steps:
(1) feeding mud: closing the first supernatant discharge valve, the second supernatant discharge valve, the third supernatant discharge valve and the mud discharge valve, and opening the first mud inlet valve and the second mud inlet valve to start mud inlet; the ultrasonic liquid level meter detects the liquid level of the sludge storage tank in real time, when the liquid level reaches a preset value, the first sludge inlet valve and the second sludge inlet valve are closed, and the pump of the primary sludge and the residual sludge is stopped;
(2) stirring: the electric control cabinet starts the stirrer and runs regularly according to preset time;
(3) standing and settling: the electric control cabinet controls the stirrer to stop and start to statically sink;
(4) discharging supernatant liquid: the ultrasonic sludge interface meter detects a sludge interface in real time, and when the liquid level drops to be lower than a supernatant discharge pipeline with a high liquid level, a supernatant discharge valve is opened; when the liquid level is lowered to be lower than the supernatant discharge pipeline at the middle liquid level, opening a second supernatant discharge valve; when the liquid level is lowered to be lower than the supernatant discharging pipeline at the low liquid level, opening a third supernatant discharging valve;
(5) discharging sludge: the electric control cabinet carries out logic comparison in real time, and when the liquid level difference between the supernatant and the sludge interface is smaller than a preset value, a sludge discharge valve is opened; and the electric control cabinet sends a signal to a mud inlet pump of the concentration and dehydration machine room to prompt the pump to be started for mud inlet.
The sludge storage tank is made of metal materials or glass fiber reinforced plastic materials and assembled on site.
The top of the sludge storage tank is provided with a support, and the stirrer, the ultrasonic liquid level meter and the ultrasonic sludge interface meter are all fixed through the support.
Each sludge storage tank is provided with a ladder stand.
The electric control cabinet is made of stainless steel and is arranged on the side wall of the sludge storage tank or is arranged on the top of the sludge storage tank through a stainless steel bracket.
No. one advance mud valve, No. two advance mud valve and mud valve all adopt electronic knife gate valve, No. one supernatant discharge valve, No. two supernatant discharge valve and No. three supernatant discharge valve all adopt electronic butterfly valve.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
(1) in the invention, the sludge storage tank has both the adjusting function and the concentrating function, and is integrated with the sludge standing and precipitating process to improve the solid content of the sludge entering the concentrating and dehydrating process;
(2) the invention adopts sequencing batch design to meet continuous working conditions, does not need intermittent operation, integrates functions of mud feeding, mud discharging, supernatant discharging and mud stirring, and is provided with an electric cabinet, process equipment, a tank body and an electric control device in a complete set and integrated assembly, the problems can be rapidly solved on site by applying the integrated device of the process, and the sludge reduction by the process device can reduce the load of the subsequent concentration dehydration process and reduce the operating cost;
(3) the invention can be supplied in a set according to a certain specification according to the scale of a sewage treatment plant, has short construction period and quick assembly, can meet the sludge storage function, can obviously improve the solid content of the sludge and reduce the pressure of a subsequent concentration dehydration section;
(4) the invention adjusts the flow of the sludge storage tank from pure state, increases the concentration function, and is designed into the split mounting type integrated process device, thereby bringing great convenience for the new construction, upgrading, capacity expansion and reconstruction of the sewage plant;
(5) in the invention, the sludge storage tank is not provided with a rotating part, so that the sludge storage tank is not required to be maintained, the workload of later overhauling and maintenance in the tank can be reduced, and the probability of toxic and harmful gas poisoning possibly encountered by an overhauling person during overhauling in the tank can be reduced.
Drawings
FIG. 1 is a floor plan of an embodiment of the present invention;
FIG. 2 is a left side view of a sludge storage tank in an embodiment of the present invention;
FIG. 3 is a plan view of a sludge storage tank in an embodiment of the present invention;
FIG. 4 is a front view of a sludge storage tank in an embodiment of the present invention;
FIG. 5 is a right side view of a sludge storage tank in an embodiment of the present invention;
FIG. 6 is a schematic view of the mounting of the agitator in an embodiment of the present invention;
fig. 7 is a schematic view of the installation of the electric cabinet in the embodiment of the invention.
Detailed Description
The invention is further described below with reference to the figures and examples.
Referring to fig. 1 to 7, in the present embodiment, two sludge storage tanks 1 are provided, and the sludge storage tanks 1 are made of a sequencing batch sludge storage tank and are made of a metal material or a glass fiber reinforced plastic material, and only a concrete foundation 21 needs to be constructed on site, and then each sludge storage tank 1 is connected to the concrete foundation 21 in an assembled manner. Each sludge storage tank 1 is connected with a residual sludge inlet pipeline 2, a primary sludge inlet pipeline 3, an overflow pipeline 4, a high liquid level supernatant discharge pipeline 5, a medium liquid level supernatant discharge pipeline 6, a low liquid level supernatant discharge pipeline 7 and a sludge discharge pipe 8. The excess sludge inlet pipelines 2 are connected to an excess sludge pump room, and a first sludge inlet valve 15 is arranged on each excess sludge inlet pipeline 2; the primary sludge inlet pipeline 3 is connected to a primary sludge pump room, and the primary sludge inlet pipeline 3 is provided with a second sludge inlet valve 16. Overflow pipe 4, high liquid level supernatant discharge pipe 5, well liquid level supernatant discharge pipe 6 and low liquid level supernatant discharge pipe 7 all are connected to the factory sewage pipeline, all set up a supernatant discharge valve 17 on the high liquid level supernatant discharge pipe 5, all set up No. two supernatant discharge valves 18 on the well liquid level supernatant discharge pipe 6, all set up No. three supernatant discharge valves 19 on the low liquid level supernatant discharge pipe 7. The sludge discharge pipes 8 are all provided with sludge discharge valves 20, and the sludge discharge pipes 8 are all connected to a concentration dehydration machine room. No. one advance mud valve 15, No. two advance mud valve 16 and mud valve 20 all adopt electronic knife gate valve, No. one supernatant discharge valve 17, No. two supernatant discharge valve 18 and No. three supernatant discharge valve 19 all adopt electronic butterfly valve.
Every sludge storage tank 1 all is provided with agitator 9, ultrasonic wave level gauge 10 and ultrasonic wave mud interface meter 11 are used for detecting supernatant liquid level and mud interface liquid level respectively, and the sensor mounting means is the support mounting. Each sludge storage tank is provided with a ladder 13, the top of each sludge storage tank 1 is provided with a support 14, the supports 14 are made of metal materials or glass fiber reinforced plastic materials, and the stirrer 9, the ultrasonic liquid level meter 10 and the ultrasonic sludge interface meter 11 are all fixed through the supports 14. The sludge storage tank 1 is provided with a set of electric control cabinet 12, power distribution and control components are arranged in the electric control cabinet, and the electric control cabinet is responsible for collecting signals of all instruments in the sludge storage tank 1 and distributing and controlling process equipment, and a Programmable Logic Controller (PLC) is used for realizing whole-process automatic control. In order to adapt to outdoor environment, the electric control cabinet 12 is made of stainless steel, the protection grade is not lower than IP65, and the electric control cabinet 12 is arranged on the side wall of the sludge storage tank 1 or arranged at the top of the sludge storage tank 1 through a stainless steel bracket. The types and the quantities of the electric control cabinet 12, the ultrasonic liquid level meter 10 and the ultrasonic sludge interface meter 11 in the embodiment are shown in the table 1:
TABLE 1
In this embodiment, the two sludge storage tanks 1 both adopt a sequencing batch operation mode, which is specifically shown in table 2:
TABLE 2
The sequential control can also program and modify the electric control cabinet according to the actual situation. The treatment process will be described in detail below by taking the single sludge storage tank 1 as an example.
According to the sludge treatment method of the tank-maintenance-free sludge storage tank device with the sludge concentration function, each sludge storage tank 1 adopts a sequencing batch operation mode and comprises 5 links of sludge feeding, stirring, static settling, supernatant discharging, sludge discharging and the like, and the steps are circulated in a reciprocating manner. The specific operation process is as follows:
(1) feeding mud: closing the first supernatant discharge valve 17, the second supernatant discharge valve 18, the third supernatant discharge valve 19 and the mud discharge valve 20, and opening the first mud inlet valve 15 and the second mud inlet valve 16 to start mud inlet; the ultrasonic liquid level meter 10 detects the liquid level of the sludge storage tank 1 in real time, when the liquid level reaches a preset value, the first sludge inlet valve 15 and the second sludge inlet valve 16 are closed, and the pump of primary sludge and excess sludge is stopped;
(2) stirring: the electric control cabinet 12(PLC) controls the starting of the stirrer 9 and runs at regular time according to preset time;
(3) standing and settling: the electric control cabinet 12(PLC) controls the stirrer 9 to stop and start to settle;
(4) discharging supernatant liquid: the ultrasonic sludge interface meter 11 detects a sludge interface in real time, and when the liquid level drops to be lower than the supernatant discharge pipeline 5 with a high liquid level, the first supernatant discharge valve 17 is opened; when the liquid level drops below the middle liquid level supernatant discharge pipe 6, the second supernatant discharge valve 18 is opened; when the liquid level drops below the low liquid level supernatant discharge pipe 7, the third supernatant discharge valve 19 is opened;
(5) discharging sludge: the electric control cabinet 12(PLC) carries out logic comparison in real time, and when the liquid level difference between the supernatant and the sludge interface is smaller than a preset value, a sludge discharge valve 20 is opened; and the electric control cabinet 12(PLC) sends a signal to a mud inlet pump of the concentration and dehydration machine room to prompt that the pump is allowed to be started to feed mud.
While the present invention has been described in terms of its functions and operations with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise functions and operations described above, and that the above-described embodiments are illustrative rather than restrictive, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope or spirit of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides a sludge treatment method with sludge concentration function is exempted from interior maintenance in pond adopts sludge impoundment device with sludge concentration function is exempted from interior maintenance in pond, including sludge impoundment (1), sludge impoundment (1) adopts sequencing batch sludge impoundment, every sludge impoundment (1) all is connected with excess sludge and advances mud pipeline (2), just sinks mud and advances mud pipeline (3), overflow pipeline (4), high liquid level supernatant discharge pipe way (5), well liquid level supernatant discharge pipe way (6), low liquid level supernatant discharge pipe way (7) and mud pipe (8), excess sludge advances mud pipeline (2) and just sinks mud and advances mud pipeline (3) and is provided with one number respectively and advances mud valve (15) and two numbers and advance mud valve (16), mud pipe (8) are provided with mud valve (20), high liquid level supernatant discharge pipe way (5), well liquid level supernatant discharge pipe way (6) and low liquid level supernatant discharge pipe way (7) are provided with one number respectively A supernatant discharge valve (17), a second supernatant discharge valve (18) and a third supernatant discharge valve (19); every mud apothecary (1) all is provided with agitator (9), ultrasonic wave level gauge (10) and ultrasonic wave mud interface meter (11), mud apothecary (1) is configured with automatically controlled cabinet (12), its characterized in that, every mud apothecary (1) all adopts the formula of wholesale operation mode, includes following operation step:
(1) feeding mud: closing a first supernatant discharge valve (17), a second supernatant discharge valve (18), a third supernatant discharge valve (19) and a mud discharge valve (20), and opening a first mud inlet valve (15) and a second mud inlet valve (16) to start mud inlet; the ultrasonic liquid level meter (10) detects the liquid level of the sludge storage tank (1) in real time, when the liquid level reaches a preset value, the first sludge inlet valve (15) and the second sludge inlet valve (16) are closed, and the pump of primary sludge and residual sludge is stopped;
(2) stirring: the electric control cabinet (12) starts the stirrer (9) and runs at regular time according to preset time;
(3) standing and settling: the electric control cabinet (12) controls the stirrer (9) to stop and start to settle;
(4) discharging supernatant liquid: an ultrasonic sludge interface meter (11) detects a sludge interface in real time, and when the liquid level drops to a position lower than a high liquid level supernatant discharge pipeline (5), a first supernatant discharge valve (17) is opened; when the liquid level drops to be lower than the supernatant discharge pipeline (6) at the middle liquid level, opening a second supernatant discharge valve (18); when the liquid level drops to be lower than the supernatant discharge pipeline (7) at the low liquid level, opening a third supernatant discharge valve (19);
(5) discharging sludge: the electric control cabinet (12) carries out logic comparison in real time, and when the liquid level difference between the supernatant and the sludge interface is smaller than a preset value, a sludge discharge valve (20) is opened; and the electric control cabinet (12) sends a signal to a mud inlet pump of the concentration and dehydration machine room to prompt the pump to be started to feed mud.
2. The method for treating the sludge with the sludge concentration function and free of in-tank maintenance according to claim 1, wherein the sludge storage tank (1) is made of metal materials or glass fiber reinforced plastic materials and assembled on site.
3. The tank-maintenance-free sludge treatment method with the sludge concentration function according to claim 1, wherein a support (14) is arranged at the top of the sludge storage tank (1), and the stirrer (9), the ultrasonic liquid level meter (10) and the ultrasonic sludge interface meter (11) are all fixed through the support (14).
4. The method for treating sludge having a sludge thickening function without in-tank maintenance according to claim 1, wherein each of the sludge impoundments (1) is provided with a ladder stand (13).
5. The method for treating the sludge without the in-tank maintenance and with the sludge concentration function according to claim 1, wherein the electric control cabinet (12) is made of stainless steel and is installed on the side wall of the sludge storage tank (1) or is installed on the top of the sludge storage tank (1) through a stainless steel bracket.
6. The tank-interior-maintenance-free sludge treatment method with the sludge concentration function according to claim 1, wherein the first sludge inlet valve (15), the second sludge inlet valve (16) and the sludge discharge valve (20) are all electric knife gate valves, and the first supernatant discharge valve (17), the second supernatant discharge valve (18) and the third supernatant discharge valve (19) are all electric butterfly valves.
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| CN109205991A (en) * | 2018-09-12 | 2019-01-15 | 浦华控股有限公司 | A kind of sludge dewatering sedimenting system and method |
| CN114210104A (en) * | 2022-01-28 | 2022-03-22 | 北控水务(中国)投资有限公司 | Sludge concentration control device and control method |
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| CN102153263A (en) * | 2011-04-27 | 2011-08-17 | 安徽南风环境工程技术有限公司 | Efficient sludge concentration and dehydration system and dehydration method thereof |
| CN202329739U (en) * | 2011-12-05 | 2012-07-11 | 宜兴市建邦环境投资有限责任公司 | Device for rapidly determining sludge levels of buildings |
| CN103833196A (en) * | 2014-02-20 | 2014-06-04 | 镇江市水业总公司 | supermatant discharge system and sludge condensation method |
| CN205442785U (en) * | 2016-03-18 | 2016-08-10 | 华新环境工程有限公司 | A device for keeping in and biochemical mud of regeneration anaerobism |
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2016
- 2016-11-17 CN CN201611019510.9A patent/CN106630532B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101003412A (en) * | 2006-12-31 | 2007-07-25 | 湖南华迪电力环保工程技术有限公司 | Method and system unit for flue gas desulfurization and wastewater treatment |
| CN102153263A (en) * | 2011-04-27 | 2011-08-17 | 安徽南风环境工程技术有限公司 | Efficient sludge concentration and dehydration system and dehydration method thereof |
| CN202329739U (en) * | 2011-12-05 | 2012-07-11 | 宜兴市建邦环境投资有限责任公司 | Device for rapidly determining sludge levels of buildings |
| CN103833196A (en) * | 2014-02-20 | 2014-06-04 | 镇江市水业总公司 | supermatant discharge system and sludge condensation method |
| CN205442785U (en) * | 2016-03-18 | 2016-08-10 | 华新环境工程有限公司 | A device for keeping in and biochemical mud of regeneration anaerobism |
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