CN110835201B - Black and odorous water body treatment system - Google Patents
Black and odorous water body treatment system Download PDFInfo
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- CN110835201B CN110835201B CN201910940099.6A CN201910940099A CN110835201B CN 110835201 B CN110835201 B CN 110835201B CN 201910940099 A CN201910940099 A CN 201910940099A CN 110835201 B CN110835201 B CN 110835201B
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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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
- C02F7/00—Aeration of stretches of water
Abstract
The invention belongs to the technical field of environmental protection, and discloses a black and odorous water body treatment system, which comprises: the system comprises a water inlet, a grit chamber, a filtering grid, a materialization tank, a biochemical tank, a PRB reaction wall and a water outlet; the black and odorous water body treatment system further includes: the system comprises a PLC (programmable logic controller) and a weight sensor, a sand pump, a micro-nano bubble generator, a first water quality monitor, an ultramicro-nano bubble generator and a second water quality monitor which are connected with the PLC; the weight sensor is arranged at the bottom of the grit chamber, the sand pump is arranged at the bottom of the grit chamber, the micro-nano bubble tube is arranged at the bottom of the materialization tank and connected with the micro-nano bubble generator, the first water quality monitor is arranged in the materialization tank, the biochemical tank is filled with filter materials, and the ultramicro-nano bubble tube is arranged at the bottom of the biochemical tank and connected with the ultramicro-nano bubble generator; the second water quality monitor is arranged at the water outlet.
Description
Technical Field
The invention relates to the technical field of environmental protection, in particular to a black and odorous water body treatment system.
Background
Black and odorous water is an extreme phenomenon in water pollution, and is caused by excessive acceptance of pollutants in rivers or lakes. The fundamental reason is that the self-purification effect of the water body is damaged due to the imbalance of reoxygenation and oxygen consumption of the water body, and excessive existence of humus and other pollutants causing black and odor. At present, the treatment methods for black and odorous water bodies are roughly divided into three types, namely a physical method, a chemical method and a biological method. The physical method mainly comprises water diversion and water change, sediment dredging and the like, but the method has high cost and slow effect, addresses the symptoms, does not address the root cause and needs long-term maintenance; the chemical method mainly comprises chemical flocculation, chemical oxidation and chemical precipitation, namely, a precipitator chemical agent is used for removing pollutants such as suspended matters, dissolved nitrogen and phosphorus in water, the chemical treatment technology is rapid and efficient, certain superiority is shown, but the chemical treatment technology is high in cost consumption and limited in treatment range, secondary pollution is easy to cause, and the problem of environmental safety caused by secondary pollution is uncertain; the biological method is a technological method which develops rapidly in recent years, mainly utilizes the metabolic activity of microorganisms or plants to convert and degrade pollutants in water so as to purify the water body, has good treatment effect, low energy consumption and low operation cost, does not form secondary pollution, but has slow effect, higher requirement on environmental conditions and higher maintenance cost of the conventional biological method. The existing treatment method shows that the black and odorous water body is difficult to be treated radically economically, effectively and quickly in a single treatment mode due to various reasons for causing the black and odorous water body, complex pollutant content and different pollution degrees.
Disclosure of Invention
The invention provides a black and odorous water body treatment system, and a black and odorous water body rapid treatment method which is efficient, continuous, high in automation degree, controllable in water quality and low in operation cost is realized.
In order to solve the above technical problem, the present invention provides a black and odorous water body treatment system, including: the system comprises a water inlet, a grit chamber, a filtering grid, a materialization tank, a biochemical tank, a PRB reaction wall and a water outlet;
the black and odorous water body treatment system further includes: the system comprises a weight sensor, a sand pump, a micro-nano bubble tube, a micro-nano bubble generator, a first water quality monitor, an ultramicro-nano bubble generator, an ultramicro-nano bubble tube, a second water quality monitor and a PLC (programmable logic controller);
the weight sensor is arranged at the bottom of the grit chamber and connected with the PLC, and is used for monitoring the weight of the settled sand in real time and transmitting the weight of the settled sand back to the PLC;
the sand pump is arranged at the bottom of the grit chamber, is connected with the PLC and is driven by the PLC to perform sand pumping and discharging operations;
the micro-nano bubble tube is arranged at the bottom of the materialization tank and connected with the micro-nano bubble generator, and the micro-nano bubble generator is connected with the PLC;
the first water quality monitor is arranged in the materialization tank and connected with the PLC, and is used for monitoring water quality parameters in real time and transmitting the water quality parameters back to the PLC;
the biochemical tank is filled with filter materials, the ultramicro nano bubble tube is arranged at the bottom of the biochemical tank and connected with the ultramicro nano bubble generator, and the ultramicro nano bubble generator is connected with the PLC;
and the second water quality monitor is arranged at the water outlet and is connected with the PLC.
Further, the slope range of the water inlet slope of the grit chamber is 10-30 degrees.
Further, the slope of the water outlet blocking dam of the grit chamber is 2 times of the slope of the water inlet slope.
Furthermore, a starting threshold value of the sand pump is arranged in the PLC;
and when the weight signal detected by the weight sensor is 1.5-2 times of the weight of the water depth in the grit chamber, the PLC drives the sand pump to start.
Further, the slope of the grating intercepting and separating inclined plane of the filtering grating is larger than 45 degrees, the long axis direction of the grating of the filtering grating is perpendicular to the water flow direction, and a chute is arranged at the tail end of the filtering grating.
Furthermore, the meshes of the filter grid are distributed in a gradient manner along the flowing water direction from small to large, and the aperture of each large hole is smaller than or equal to 1 mm.
Further, the water quality monitoring content of the first water quality monitor comprises: water transparency and conductivity;
the PLC controls the starting and the generating intensity of the micro-nano bubble generator according to the threshold values of the transparency and the conductivity of the water body arranged in the PLC.
Further, the water quality monitoring content of the second water quality monitor comprises: the COD content of the water quality;
the PLC controls the starting and the generating intensity of the ultramicro nano bubble generator according to a threshold value of the COD content of water quality set in the PLC.
Furthermore, the filter material is a porous ceramic filter ball with uneven grain size;
wherein, before the porous ceramic filter ball is used, the porous ceramic filter ball is soaked by aerobic bacteria for biofilm formation treatment.
Furthermore, the PRB reaction wall is filled with mixed particles comprising activated carbon, zeolite and iron beads;
the mixed particles are all spherical, and the particle size range is 2mm-5 mm.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
according to the black and odorous water body treatment system provided by the embodiment of the application, physical sand settling, real-time automatic execution feedback control sand pumping and grating sewage interception separation are realized by the grit chamber and the weight sensor, the sand pumping pump and the PLC inside the grit chamber, and the grating sewage interception separation is realized by combining the filter grating; the micro-nano bubble generator and the pipeline in the materialization tank are combined with a first water quality analyzer and a PLC to realize micro-nano negative feedback air control; in a biochemical pool, ultramicro nanometer negative feedback active oxygen aeration is realized through an ultramicro nanometer bubble generator, an ultramicro nanometer bubble tube, a second water quality monitor and a PLC, and filter material adsorption and biological film hanging treatment are realized by combining a PRB reaction wall; and realizes three-stage step-by-step continuous processing. The PLC intelligent control center is used for integrated monitoring and operation, so that the black and odorous water body can be quickly treated efficiently and continuously, and is high in automation degree, controllable in water quality and low in operation cost. The method economically and reliably solves the problems that the black and odorous water pollutants are complex and have different pollution degrees, and the traditional means is difficult to rapidly treat.
Drawings
Fig. 1 is a schematic structural view of a black and odorous water body treatment system provided by the present invention.
Detailed Description
The embodiment of the application provides a black and odorous water body treatment system, and the black and odorous water body rapid treatment method with high efficiency, continuity, high automation degree, controllable water quality and low operation cost is realized.
In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the specific embodiments of the specification, and it should be understood that the embodiments and specific features of the embodiments of the present invention are detailed descriptions of the technical solutions of the present application, and are not limitations of the technical solutions of the present application, and the technical features of the embodiments and examples of the present application may be combined with each other without conflict.
Referring to fig. 1, a black and odorous water body treatment system includes, arranged in a water flow direction: the system comprises a water inlet 1, a grit chamber 4, a filter grid 5, a materialization tank 6, a biochemical tank 10, a PRB reaction wall 12 and a water outlet 18; the water to be treated sequentially passes through the last time unit step by step to execute corresponding treatment.
Moreover, the present embodiment is further provided with an automatic control system based on the above unit arrangement, which will be described in detail below.
The black and odorous water body treatment system further includes: the system comprises a weight sensor 2, a sand pump 3, a micro-nano bubble tube 7, a micro-nano bubble generator 8, a first water quality monitor 9, an ultramicro-nano bubble generator 14, an ultramicro-nano bubble tube, a second water quality monitor 13 and a PLC (programmable logic controller) 15.
The weight sensor 2 is arranged at the bottom of the grit chamber 4 and connected with the PLC (programmable logic controller) 15, monitors the weight of the settled sand in real time and transmits the weight of the settled sand back to the PLC 15; as the basis for pumping and discharging sand.
The sand pump 3 is arranged at the bottom of the grit chamber 4, is connected with the PLC (programmable logic controller) 15 and is driven by the PLC 15 to perform sand pumping and discharging operation; specifically, a start threshold value of the sand pump 3 is set in the PLC programmable controller 15; and when the weight signal detected by the weight sensor 2 is 1.5-2 times of the weight of the water depth in the grit chamber 4, the PLC (programmable logic controller) 15 drives the sand pump 3 to start.
The micro-nano bubble tube 7 is arranged at the bottom of the materialization tank 6 and is connected with the micro-nano bubble generator 8, and the micro-nano bubble generator 8 is connected with the PLC 15; the first water quality monitor 9 is arranged in the materialization tank 6, is connected with the PLC (programmable logic controller) 15, monitors water quality parameters in real time and transmits the water quality parameters back to the PLC 15; and the monitoring data of the first water quality monitor 9 is used as the driving basis of the micro-nano bubble generator 8.
Specifically, the water quality monitoring contents of the first water quality monitor include: water transparency and conductivity; the PLC controls the starting and the generating intensity of the micro-nano bubble generator according to the threshold values of the transparency and the conductivity of the water body arranged in the PLC.
The biochemical tank 10 is filled with a filter material 11, the ultramicro nano bubble tube is arranged at the bottom of the biochemical tank 10 and is connected with the ultramicro nano bubble generator 14, and the ultramicro nano bubble generator 14 is connected with the PLC 15; the second water quality monitor 13 is arranged at the water outlet 18 and is connected with the PLC 15; and the monitoring data of the second water quality monitor 13 is used as the driving basis of the micro-nano bubble generator 14.
Specifically, the water quality monitoring contents of the second water quality monitor 13 include: the COD content of the water quality; wherein, the PLC 15 controls the starting and the generating intensity of the ultramicro-nano bubble generator 14 according to the threshold value of the COD content of the water quality set in the PLC.
Further, the slope range of the water inlet slope of the grit chamber 4 is 10-30 degrees, and the slope of the water outlet blocking dam of the grit chamber 4 is 2 times of the slope of the water inlet slope.
The slope of the grating intercepting and separating inclined plane of the filtering grating 5 is larger than 45 degrees, the long axis direction of the grating of the filtering grating 5 is perpendicular to the water flow direction, and the tail end of the filtering grating 5 is provided with a chute. The meshes of the filtering grid 5 are distributed in a gradient manner along the flowing water direction from small to large, and the aperture of the large hole is less than or equal to 1 mm.
Furthermore, the filter material 11 is a porous ceramic filter ball with uneven grain size; wherein, before the porous ceramic filter ball is used, the porous ceramic filter ball is soaked by aerobic bacteria for biofilm formation treatment.
The PRB reaction wall 12 is filled with mixed particles comprising activated carbon, zeolite and iron beads; the mixed particles are all spherical, and the particle size range is 2mm-5 mm.
It is worth mentioning that the system can be powered by mains supply, and certainly, clean renewable energy sources can be used, including: clean renewable energy sources such as water kinetic energy, solar energy, wind energy and the like. Correspondingly, a hydroelectric generator and flowing water to be treated can be arranged; alternatively, a photovoltaic cell 16 or a wind generator 17 is provided.
The operation will be specifically described below.
The specific implementation path is as follows:
after the black and odorous water enters the system, the flow velocity is slowed down through the grit chamber 4, so that the silt in the water is precipitated at the designated position at the bottom of the tank, when the weight reaches the threshold value of the set weight sensor 2, the PLC 15 program-controlled intermittent sand discharge, the water floats upwards to larger-sized impurities, the impurities are filtered through the filter grids and are collected in the inclined chutes, the filter impurities can be automatically discharged through the chutes, the primarily purified sewage enters the materialization tank 6, the impurities are adhered to fine suspended matters through the actions of surface tension, electric adsorption, chelate networks and the like under the action of micro-nano bubbles to form flocs with the integral specific gravity smaller than 1, the flocs float to the water surface according to the buoyancy principle, solid-liquid separation is realized, the floating impurities are filtered through grids to intercept the pollutants, the impurities are collected outside the inclined chutes, the water quality is monitored in real time through the first water quality monitor 9, a signal is fed back to the PLC 15, so as to control the generation frequency of the micro-nano bubbles, is economical and efficient; after secondary treatment, the water body enters a biochemical pool 10, dephosphorization and denitrification are carried out through adsorption of a porous ceramic filter material, a biological film is formed on the filter material, ultramicro nano active oxygen aeration is adopted, the time for gas to remain in the water body is prolonged, oxygen dissolution is high, the rapid degradation of organic pollutants by microorganisms is realized, finally, the water body enters a PRB active reaction wall 12, the heavy metal pollutants in the water body are adsorbed, the tail water quality is continuously monitored through a second water quality monitor 13, monitoring signals are fed back to an ultramicro nano bubble generator 14, the bubble generation intensity is controlled by a servo mode, intelligent control is energy-saving, and the water quality is controlled to be discharged outwards.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
according to the black and odorous water body treatment system provided by the embodiment of the application, physical sand settling, real-time automatic execution feedback control sand pumping and grating sewage interception separation are realized by the grit chamber and the weight sensor, the sand pumping pump and the PLC inside the grit chamber, and the grating sewage interception separation is realized by combining the filter grating; the micro-nano bubble generator and the pipeline in the materialization tank are combined with a first water quality analyzer and a PLC to realize micro-nano negative feedback air control; in a biochemical pool, ultramicro nanometer negative feedback active oxygen aeration is realized through an ultramicro nanometer bubble generator, an ultramicro nanometer bubble tube, a second water quality monitor and a PLC, and filter material adsorption and biological film hanging treatment are realized by combining a PRB reaction wall; and realizes three-stage step-by-step continuous processing. The PLC intelligent control center is used for integrated monitoring and operation, so that the black and odorous water body can be quickly treated efficiently and continuously, and is high in automation degree, controllable in water quality and low in operation cost. The method economically and reliably solves the problems that the black and odorous water pollutants are complex and have different pollution degrees, and the traditional means is difficult to rapidly treat.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (1)
1. A black and odorous water body treatment system, comprising, arranged in a water flow direction: the system comprises a water inlet, a grit chamber, a filtering grid, a materialization tank, a biochemical tank, a PRB reaction wall and a water outlet;
the black and odorous water body treatment system further includes: the system comprises a weight sensor, a sand pump, a micro-nano bubble tube, a micro-nano bubble generator, a first water quality monitor, an ultramicro-nano bubble generator, an ultramicro-nano bubble tube, a second water quality monitor and a PLC (programmable logic controller);
the weight sensor is arranged at the bottom of the grit chamber and connected with the PLC, and is used for monitoring the weight of the settled sand in real time and transmitting the weight of the settled sand back to the PLC;
the sand pump is arranged at the bottom of the grit chamber, is connected with the PLC and is driven by the PLC to perform sand pumping and discharging operations;
the micro-nano bubble tube is arranged at the bottom of the materialization tank and connected with the micro-nano bubble generator, and the micro-nano bubble generator is connected with the PLC;
the first water quality monitor is arranged in the materialization tank and connected with the PLC, and is used for monitoring water quality parameters in real time and transmitting the water quality parameters back to the PLC;
the biochemical tank is filled with filter materials, the ultramicro nano bubble tube is arranged at the bottom of the biochemical tank and connected with the ultramicro nano bubble generator, and the ultramicro nano bubble generator is connected with the PLC;
the second water quality monitor is arranged at the water outlet and is connected with the PLC;
the slope range of the water inlet slope of the grit chamber is 10-30 degrees;
the slope of the water outlet blocking dam of the grit chamber is 2 times of the slope of the water inlet slope;
the PLC is internally provided with a starting threshold value of the sand pump;
when the weight signal detected by the weight sensor is 1.5-2 times of the weight of the water depth in the grit chamber, the PLC drives the sand pump to start;
the gradient of the grating dirt intercepting and separating inclined surface of the filtering grating is larger than 45 degrees, the long axis direction of the grating of the filtering grating is vertical to the water flow direction, and the tail end of the filtering grating is provided with a chute;
the meshes of the filter grid are distributed in a gradient manner along the flowing water direction from small to large, and the aperture of a large hole is less than or equal to 1 mm;
the water quality monitoring content of the first water quality monitor comprises: water transparency and conductivity;
the PLC controls the starting and the generating intensity of the micro-nano bubble generator according to the threshold values of the transparency and the conductivity of the water body arranged in the PLC;
the water quality monitoring content of the second water quality monitor comprises: the COD content of the water quality;
the PLC controls the starting and the generating intensity of the ultramicro nano bubble generator according to a water quality COD content threshold value set in the PLC;
the filter material is a porous ceramic filter ball with uneven grain size;
before use, the porous ceramic filter ball is soaked by aerobic bacteria for biofilm formation treatment;
the PRB reaction wall is filled with mixed particles comprising activated carbon, zeolite and iron beads;
the mixed particles are spherical, and the particle size range is 2mm-5 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910940099.6A CN110835201B (en) | 2019-09-30 | 2019-09-30 | Black and odorous water body treatment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910940099.6A CN110835201B (en) | 2019-09-30 | 2019-09-30 | Black and odorous water body treatment system |
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| CN110835201A CN110835201A (en) | 2020-02-25 |
| CN110835201B true CN110835201B (en) | 2021-09-21 |
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| CN114988642B (en) * | 2022-06-10 | 2023-04-18 | 安徽新宇环保科技股份有限公司 | Intelligent polluted water treatment system based on water quality detection indexes |
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| CN107010791A (en) * | 2017-06-01 | 2017-08-04 | 北京中农天陆微纳米气泡水科技有限公司 | River regulation system based on micro-nano oxygenation aeration and biological cleaning effect |
| CN108658324A (en) * | 2018-07-26 | 2018-10-16 | 北京高能时代环境技术股份有限公司 | Black and odorous river purification system based on permeable reactive barrier and black and odorous river administering method |
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2019
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8172206B2 (en) * | 2008-05-23 | 2012-05-08 | St Lawrence Thomas | System for forming mini microbubbles |
| CN205347098U (en) * | 2015-12-01 | 2016-06-29 | 广东鑫都环保实业有限公司 | Black smelly water treatment system |
| CN105819620A (en) * | 2016-03-30 | 2016-08-03 | 广州资源环保科技股份有限公司 | Wastewater treatment technology and device beneficial to removing black and odorous water |
| CN206152489U (en) * | 2016-11-08 | 2017-05-10 | 天津春源龙润微灌技术有限公司 | Centrifugal filter |
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