CN111333184A - Biological ecological sewage treatment system capable of switching driving energy sources - Google Patents
Biological ecological sewage treatment system capable of switching driving energy sources Download PDFInfo
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- CN111333184A CN111333184A CN202010102010.1A CN202010102010A CN111333184A CN 111333184 A CN111333184 A CN 111333184A CN 202010102010 A CN202010102010 A CN 202010102010A CN 111333184 A CN111333184 A CN 111333184A
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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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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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
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/327—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae characterised by animals and plants
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/009—Apparatus with independent power supply, e.g. solar cells, windpower, fuel cells
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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
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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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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Abstract
The invention discloses a sewage biological ecological treatment system capable of switching driving energy sources, which comprises an energy source switching unit, a sewage biological treatment unit and an ecological treatment unit; the energy switching unit supplies energy to the sewage biological treatment unit, can realize the switching by taking wind energy and solar energy drive as main driving energy and taking power frequency alternating current (commercial power) as supplementary driving energy, and the biological treatment unit is a multipoint water inlet biological contact oxidation reaction tank, and the ecological treatment unit comprises an annular wetland tank and a purification pond, and sewage flows through the sewage biological treatment unit and the ecological treatment unit in sequence and is discharged after being further purified. The invention has the advantages of flexible collocation, convenient operation, high integration, stable operation effect and good sewage treatment effect, and can switch the driving energy according to the external environment to realize automatic operation.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a biological-ecological sewage treatment system which takes wind energy and solar energy as main driving energy and power frequency alternating current (commercial power) as supplementary driving energy.
Background
The sewage treatment belongs to the energy intensive industry, aeration and lifting in the sewage treatment process are main energy consumption processes, account for about 70% of total energy consumption, and are main components of the operation cost of sewage treatment facilities. At present, the increasingly serious energy crisis, the exploration of a sewage treatment system which is driven by clean and renewable energy sources and combines ecological treatment and takes multi-target effluent as effluent indexes has important significance for the sustainable development of the society.
In general, the intensity of natural wind and solar radiation varies in real time and has instability, such as difficulty in ensuring the continuity of energy supply in rainy weather. In the prior art, storage batteries are generally used for storing wind energy and solar energy, and the common storage batteries are difficult to meet the requirement of high-strength sewage treatment. For example, chinese patent publication No. CN205368020U discloses a sewage treatment facility using wind-solar hybrid as a driving energy source, which continues to use the conventional storage battery energy storage method and the automatic control system of the facility only controls power supply. The service life of the storage battery is usually 2-5 years, the regular replacement of the storage battery increases the cost of wind energy and solar energy power generation, and the disposal of the discarded storage battery also increases the risk of environmental pollution.
Disclosure of Invention
The present application aims to provide a sewage biological ecological treatment system capable of switching driving energy sources, so as to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a sewage biological ecological treatment system capable of switching driving energy comprises an energy switching unit, a sewage biological treatment unit and an ecological treatment unit;
the energy switching unit comprises 4 parallel switchable control lines, the first control line controls solar energy collection and output, the second control line controls wind energy collection and output, the third control line controls wind energy output by switching commercial power, and the fourth control line controls commercial power output;
the sewage biological treatment unit comprises a reaction tank, wherein a plurality of anaerobic reaction chambers and aerobic reaction chambers which are connected in series are arranged in the reaction tank, the upper parts of the anaerobic reaction chambers are connected with a lift pump, the bottom parts of the aerobic reaction chambers are connected with an aeration pump, and the lift pump and the aeration pump are supplied with energy through an energy switching unit;
the ecological treatment unit comprises a purification pond, an annular wetland pond is arranged on the periphery of the outer side of the purification pond, the reaction pond is connected to the annular wetland pond through a pipeline, the annular wetland pond is connected to the purification pond through a pipeline, and the purification pond is communicated with the outside through a pipeline.
Further, a control line is including PLC I, relay I, solar panel, solar controller, super capacitor and the dc-to-ac converter that connects gradually, a control line is including PLC I, fan controller, super capacitor and the dc-to-ac converter that connects gradually, a third control line is including commercial power, PLC I, relay II, charger, super capacitor and the dc-to-ac converter that connects gradually, a fourth control line is including commercial power, PLC I, relay III and the dc-to-ac converter that connects gradually.
Furthermore, the output end of the inverter is connected with a PLC II, and the PLC II is connected with a plurality of aeration pumps and a lifting pump.
Further, the reaction tank is the design of cuboid, and crisscross 2 baffles and 3 guide plates of being provided with along its inside length direction, cut apart into staggered arrangement's 3 anaerobic reaction chamber and 3 aerobic reaction chamber with the reaction tank, every anaerobic reaction chamber top is connected with the elevator pump, every aerobic reaction chamber bottom is connected with the aeration pump, the height of guide plate reduces in proper order, the water gap is left to the baffle bottom, and sewage flows into ecological treatment unit through each reaction chamber finally through the pipeline in proper order.
Furthermore, a small fountain is arranged in the purification pond.
Furthermore, a filtering pond is also arranged in the purifying pond, and water entering the biological treatment unit flows into the outside after sequentially flowing through the annular wetland pond, the purifying pond and the filtering pond.
Furthermore, an irradiance detector is connected to the PLC I.
Further, a wind speed detector is connected to the PLC I, the fan is further connected with a contactor, and the fan controller is further connected with an unloader.
Furthermore, the power of each lifting pump and the power of each aeration pump are different.
The invention has the following beneficial effects:
1. the biological-ecological sewage treatment system driven by wind energy, solar energy and commercial power operates stably, saves energy, protects environment and has high sewage treatment efficiency. Through the energy switching unit, the free switching which takes wind energy and solar energy as main driving energy and power frequency alternating current (commercial power) as supplementary driving energy is realized, the fluctuation of the operation effect in extreme weather is avoided, and the stable output of electric energy is controlled through the super capacitor and the PLC controller, so that the stable operation of the sewage biological treatment unit is ensured. The redundant electric energy can be supplied to the purification pond for intermittent aeration, so that the water in the pond is prevented from being blackened and smelled, and the sewage treatment efficiency is further improved.
2. The irradiance detector, the wind speed detector, the contactor and the unloader are arranged in the device, environmental data can be acquired on line, an instruction is sent through the logic operation of the PLC, the system is controlled to unload, the device is effectively prevented from being overloaded, and overload protection is provided.
3. The biological-ecological sewage treatment system adopts aeration pumps with different powers, and controls the aeration pumps with different powers according to the electric quantity of the energy switching unit. And the concentration of the dissolved oxygen in the biological reaction unit is taken as a regulation parameter, so that the water inlet pump can feed water at a corresponding flow rate. Under the normal weather conditions (no continuous rainy days or effective wind power), when the wind speed on site is weak and the solar radiation intensity is low, the power generation unit has low electric quantity, and when the electric quantity does not reach a set value, the equipment is not started; when the wind speed on site is strong and the solar radiation intensity is high, the electric quantity of the power generation unit is gradually increased, and when the solar energy and the wind energy cannot be normally supplied for a long time continuously, the system automatically switches the power supply mode to the commercial power, so that the continuous and stable operation of the equipment is ensured while the maximum utilization of the energy is realized.
Drawings
Fig. 1 is a schematic system diagram of an energy switching unit according to the present invention.
FIG. 2 is a logic diagram of operation control of the energy switching unit and the biological sewage treatment unit according to the present invention.
FIG. 3 is a schematic view of the structure of a reaction cell in the present invention.
FIG. 4 is a schematic structural view of an ecological treatment unit according to the present invention.
In the figure: 1-commercial power, 2-PLC I, 3-relay III, 4-relay I, 5-contactor, 6-relay II, 7-solar panel, 8-fan, 9-charger, 10-solar controller, 11-fan controller, 12-unloader, 13-super capacitor, 14-inverter, 15-PLC II, 16-aeration pump I, 17-aeration pump II, 18-aeration pump III, 19-fountain water pump, 20-lift pump I, 21-lift pump II, 22-lift pump III, 23-irradiance detector, 24-wind speed detector, 25-sewage tank, 26-anaerobic reaction chamber, 27-aerobic reaction chamber, 28-guide plate, 29-partition plate, 30-reaction tank, 31-reaction tank outlet pipeline, 32-purification pond, 33-annular wetland pond, 34-filtration pond and 35-ecological unit outlet pipeline.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to specific examples.
Example 1
Referring to fig. 1, 3 and 4, a sewage biological ecological treatment system capable of switching driving energy sources includes an energy switching unit, a sewage biological treatment unit and an ecological treatment unit.
The energy switching unit comprises 4 parallel and switchable control lines, wherein:
first control line is including PLC I2, relay I4, solar panel 7, solar controller 10, super capacitor 13 and the inverter 14 that connects gradually the electricity, and solar panel 7 is the parallelly connected preparation of the independent solar panel of polylith and forms for collecting solar energy and charging for super capacitor 13 through the control of solar controller 10, inverter 14 is used for converting super capacitor 13's direct current into alternating current output.
The second control line comprises a fan 8, a fan controller 11, a super capacitor 13 and an inverter 14 which are also sequentially connected with the PLC I2, wherein the fan controller 11 is used for controlling the fan 8 to charge the super capacitor 13.
And the third control line comprises a mains supply 1, a relay II 6, a charger 9, a super capacitor 13 and an inverter 14 which are sequentially connected with the PLC I2.
The fourth control line includes commercial power 1, relay III 3 and the inverter 14 that connects gradually with PLC I2.
Commercial power 1, PLC I2, ultracapacitor system 13 and inverter 14 set up to one in these 4 control lines.
The output end of the inverter 14 is connected with a PLC II 15, and the PLC II 15 is connected with an aeration pump I16, an aeration pump II 17, an aeration pump III 18, a fountain water pump 19, a lifting pump I20, a lifting pump II 21 and a lifting pump III 22.
The sewage biological treatment unit includes reaction tank 30, reaction tank 30 is the cuboid design, crisscross 2 baffles 29 and 3 guide plates 28 that are provided with on its inside length direction of edge, 3 anaerobic reaction chamber 26 and 3 aerobic reaction chamber 27 into staggered arrangement are cut apart into with reaction tank 30, 3 elevator pumps are connected respectively at anaerobic reaction chamber 26 top, the elevator pump is used for promoting sewage from effluent water sump 25 to the reaction tank in, 3 aeration pumps are connected respectively to aerobic reaction chamber 27 bottom, guide plate 28 highly reduces in proper order, water gap is left to baffle 29 bottom, sewage flows into ecological treatment unit through each reaction chamber final reaction tank outlet pipe 31 in proper order.
The ecological treatment unit comprises a purification pond 32, a fountain pump 19 is arranged in the purification pond 32 and used for intermittent aeration, an artificial subsurface annular wetland pond 33 is arranged on the periphery of the outer side of the purification pond 32, a filtration pond 34 is also arranged in the purification pond 32, a combined filter material is filled in the filtration pond 34, sewage enters the biological treatment unit through a reaction pond outlet pipeline 31, and the sewage flows through the annular wetland pond 33, the purification pond 32 and the filtration pond 34 in sequence and then is discharged to the outside through an ecological unit outlet pipeline 35.
The working principle of the energy switching unit in the device is as follows: the power supply mode is switched according to real-time weather conditions, the solar controller 10, the fan electric controller 11 and the inverter 14 have the working voltage allowable range, the working voltage range of the super capacitor 13 is 0-30V, and the voltage range is far beyond that of a traditional storage battery (generally, the voltage range of a 24V battery is 21-27V). The rated power of the solar panel 7 is the power when the irradiance reaches the maximum, namely the rated power is equal to the maximum power, and the change process of the solar intensity is slow, so that the solar controller 10 can be directly charged to the super capacitor 13 under the condition that the solar controller 10 is not started, and when the voltage of the super capacitor 13 meets the requirement that the solar controller 10 works, the solar controller 10 is started. However, wind power generation has great randomness, the rated power is the power reached under the wind speed of 9m/s, the wind power generation amount is in direct proportion to the cube of the wind speed, energy far higher than the rated power can be generated under severe weather, and the damage to a power generation system is great, so the wind power generation process must be finished under the condition that a fan controller 11 normally works, a solar panel 7 charges a super capacitor 13 in the morning every normal condition, the voltage of the super capacitor 13 can meet the working voltage of a solar controller 10 and the fan controller 11 quickly, and further the solar control line and the wind power control line can normally work, but the irradiance is very weak under special conditions such as rainy days, the voltage rising speed of the super capacitor 13 is slow, if the wind power resources are rich at the moment, a control line can charge the super capacitor 13 by using a mains supply 1, and quickly reaches the working voltage of the fan controller 11, operated by a wind driven system. Under the extremely severe weather condition (no solar energy and wind energy input exists continuously for a long time), the control circuit is switched to the mains supply 1 power supply mode, and the stable operation of the system is ensured.
In the device: the theoretical power of the aeration pump I16 is 85W; the theoretical power of the aeration pump II 17 is 135W; the theoretical power of the aeration pump III 18 is 160W; the theoretical power of the fountain water pump 19 is 15W; the theoretical power of the lift pumps I20, II 21 and III 22 is 30W.
Example 2
On the basis of embodiment 1, this embodiment further includes the following features:
and an irradiance detector 23 and a wind speed detector 24 are further connected to the PLC I2 and used for monitoring the light energy and wind energy intensity in the environment in real time and uploading the light energy and wind energy intensity to the PLC I2, and when the solar energy is too strong to generate electricity and the power is very large, part of the electricity generating units are cut off, if 4 solar panels 7 are cut off, only part of the electricity generating units are used for working, so that the super capacitor 13 is prevented from being overcharged, and the solar controller 10 and the inverter 14 are protected.
The fan 8 is further connected with a contactor 5, and the fan controller 11 is further connected with an unloader 12 for providing overload protection for the wind energy line. When wind power is too large, the fan 7 is in short circuit to form a huge load to protect the generator, and when the charging voltage is too high, the charging equipment is cut off to protect the super capacitor 13 from being overcharged.
Example 3
Referring to fig. 1-4, the process steps of the present embodiment are applied to the apparatus of embodiment 2.
A sewage biological ecological treatment process capable of switching driving energy sources comprises an energy source switching unit, a sewage biological treatment unit and an ecological treatment unit, and comprises the following process steps:
s1: the unit is switched to the start-up energy, switches the energy output of 4 control lines through PLC I2, for the power supply of sewage biological treatment unit, wherein:
mode 1: under the condition of wind in a sunny day, the solar panel 7 charges the super capacitor 13 firstly, when the voltage of the super capacitor 13 meets the working voltages of the solar controller 10 and the fan controller 11, the fan 8 starts to charge the super capacitor 13 through the fan controller 11 at the same time, further supplies power to the PLC II 15 and the load through the inverter 14, and drives the system to operate through the control logic program of the FIG. 2.
Mode 2: under the condition of clear days without wind, the solar panel 7 firstly charges the super capacitor 13, when the voltage of the super capacitor 13 meets the working voltage of the solar controller 10, the solar controller 10 starts to monitor and protect the charging process, further supplies power to the PLC II 15 and the load through the inverter 14, and drives the system to operate through the control logic program of the figure 2.
Mode 3: under the condition of wind in cloudy days, the commercial power 1 is connected with the PLC I2 to control the relay II 6 to be connected, the super capacitor 13 is charged firstly through the charger 9, when the voltage of the super capacitor 13 meets the working voltage of the fan controller 11, the fan 8 starts to charge the super capacitor 13 through the fan controller 11 at the same time, and further supplies power to the PLC2 II 15 and the load through the inverter 14, and the system is driven to operate through the control logic program of the figure 2.
Mode 4: under the condition of no wind even in a long-time cloudy day, the commercial power 1 is connected with the PLC I2 to control the relay III 3 to be connected, the system is powered by the commercial power 1, and further supplies power to the PLC II 15 and a load through the inverter 14, and the system is driven to operate through the control logic program of the figure 2. And when the weather conditions are improved, the solar energy and wind energy power supply mode is automatically switched back.
Protection mode 1: when irradiance is too high, and solar panel 7 generates electricity with high power continuously for a long time, in order to ensure that super capacitor 13 is not overcharged and protect solar controller 10, PLC I2 cuts off part of the power supply circuit of solar panel 7 through relay I4, and plays a role in protecting the circuit.
Protection mode 2: when the wind speed is too high, when the fan 8 generates electricity with high power continuously for a long time, in order to ensure that the super capacitor 13 is not overcharged and protect the fan controller 11, the PLC I2 controls the contactor 5, the three-phase circuit of the fan 8 is in short circuit to force the fan to reduce the speed, and meanwhile, the unloader 12 plays a role in protecting the circuit.
S2: control parameters are input into the PLC II 15, and the operation states of the aeration pump I16, the aeration pump II 17, the aeration pump III 18, the fountain water pump 19, the lifting pump I20, the lifting pump II 21 and the lifting pump III 22 are regulated and controlled by the logic control of the figure 2, so that oxygenation and water inlet are performed, and the water quality is regulated.
S3: the sewage enters the ecological treatment unit after being treated by the sewage biological treatment unit, and the small fountain in the purification pond 32 is started to provide certain dissolved oxygen for the purification pond 32, so that the purification pond 32 is prevented from smelling and blackening. Plants are planted in the annular wetland tank 33, fishes are cultured in the purification pond 32 to form a small ecological circulation system, and a combined filter material with good dephosphorization effect is filled in the filter pond 34, so that the sewage is further purified and finally discharged to the outside.
In the description of the present invention, it is to be understood that the terms "bottom", "top", "length", and the like, indicate directions or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or component referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
The present invention is described in detail with reference to the specific embodiments, but the present invention is only the preferred embodiments, and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (9)
1. The utility model provides a biological ecological processing system of sewage of changeable driving energy which characterized in that: comprises an energy switching unit, a sewage biological treatment unit and an ecological treatment unit;
the energy switching unit comprises 4 parallel switchable control lines, the first control line controls solar energy collection and output, the second control line controls wind energy collection and output, the third control line controls wind energy output by switching commercial power, and the fourth control line controls commercial power output;
the sewage biological treatment unit comprises a reaction tank, wherein a plurality of anaerobic reaction chambers and aerobic reaction chambers which are connected in series are arranged in the reaction tank, the upper parts of the anaerobic reaction chambers are connected with a lift pump, the bottom parts of the aerobic reaction chambers are connected with an aeration pump, and the lift pump and the aeration pump are supplied with energy through an energy switching unit;
the ecological treatment unit comprises a purification pond, an annular wetland pond is arranged on the periphery of the outer side of the purification pond, the reaction pond is connected to the annular wetland pond through a pipeline, the annular wetland pond is connected to the purification pond through a pipeline, and the purification pond is communicated with the outside through a pipeline.
2. The sewage biological ecological treatment system with switchable driving energy sources of claim 1, wherein: first control line is including PLC I, relay I, solar panel, solar controller, super capacitor and the dc-to-ac converter of electricity connection in proper order, second control line is including PLC I, fan controller, super capacitor and the dc-to-ac converter of electricity connection in proper order, third control line is including commercial power, PLC I, relay II, charger, super capacitor and the dc-to-ac converter of electricity connection in proper order, fourth control line is including commercial power, PLC I, relay III and the dc-to-ac converter of electricity connection in proper order.
3. The sewage biological ecological treatment system with switchable driving energy sources of claim 2, wherein: the output end of the inverter is connected with a PLC II, and the PLC II is connected with a plurality of aeration pumps and a lifting pump.
4. The sewage biological ecological treatment system with switchable driving energy sources, according to claim 3, is characterized in that: the reaction tank is the cuboid design, and crisscross 2 baffles and 3 guide plates that are provided with on its inside length direction of edge are cut apart into staggered arrangement's 3 anaerobic reaction chamber and 3 aerobic reaction chamber with the reaction tank, every anaerobic reaction chamber top is connected with the elevator pump, every aerobic reaction chamber bottom is connected with the aeration pump, the height of guide plate reduces in proper order, the water gap is left to the baffle bottom, and sewage flows into ecological processing unit through the pipeline through each reaction chamber finally in proper order.
5. The sewage biological ecological treatment system with switchable driving energy sources, according to claim 4, is characterized in that: a small fountain is arranged in the purification pond.
6. The sewage biological ecological treatment system with switchable driving energy sources, according to claim 5, is characterized in that: and a filtering pond is also arranged in the purifying pond, and water entering the biological treatment unit flows through the annular wetland pond, the purifying pond and the filtering pond in sequence and then is discharged to the outside.
7. The sewage biological ecological treatment system with switchable driving energy sources of claim 1, wherein: and the PLC I is also connected with an irradiance detector.
8. The sewage biological ecological treatment system with switchable driving energy sources of claim 7, wherein: the PLC I is further connected with a wind speed detector, the fan is further connected with a contactor, and the fan controller is further connected with an unloader.
9. The sewage biological ecological treatment system with switchable driving energy sources of claim 1, wherein: the power of each lifting pump and the power of each aeration pump are different.
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