CN117303480A - Sewage collection and purification system based on ceramic membrane - Google Patents
Sewage collection and purification system based on ceramic membrane Download PDFInfo
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- CN117303480A CN117303480A CN202311617180.3A CN202311617180A CN117303480A CN 117303480 A CN117303480 A CN 117303480A CN 202311617180 A CN202311617180 A CN 202311617180A CN 117303480 A CN117303480 A CN 117303480A
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- sedimentation
- heating
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- 239000010865 sewage Substances 0.000 title claims abstract description 122
- 239000012528 membrane Substances 0.000 title claims abstract description 102
- 239000000919 ceramic Substances 0.000 title claims abstract description 26
- 238000000746 purification Methods 0.000 title claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 153
- 238000004062 sedimentation Methods 0.000 claims abstract description 94
- 238000001914 filtration Methods 0.000 claims abstract description 72
- 238000005374 membrane filtration Methods 0.000 claims abstract description 72
- 230000004907 flux Effects 0.000 claims abstract description 62
- 239000000084 colloidal system Substances 0.000 claims abstract description 34
- 238000007405 data analysis Methods 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 50
- 238000005286 illumination Methods 0.000 claims description 31
- 239000002351 wastewater Substances 0.000 claims description 29
- 238000004140 cleaning Methods 0.000 claims description 27
- 238000012544 monitoring process Methods 0.000 claims description 21
- 238000009826 distribution Methods 0.000 claims description 15
- 238000011010 flushing procedure Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 8
- 230000008859 change Effects 0.000 abstract description 3
- 239000002245 particle Substances 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000000126 substance Substances 0.000 description 8
- 238000000926 separation method Methods 0.000 description 6
- 238000004321 preservation Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007790 scraping Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000004931 aggregating effect Effects 0.000 description 1
- KCZFLPPCFOHPNI-UHFFFAOYSA-N alumane;iron Chemical compound [AlH3].[Fe] KCZFLPPCFOHPNI-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000003921 particle size analysis Methods 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 238000004069 wastewater sedimentation Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
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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
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- 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
-
- 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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
- C02F2209/02—Temperature
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
Abstract
The invention relates to the field of sewage treatment, in particular to a sewage collection and purification system based on a ceramic membrane, which comprises the following components: a sedimentation heating unit comprising a sedimentation tank for performing sedimentation treatment on the sewage after the rough filtration and a heating component for heating the sewage; a filtering unit for finely filtering the settled sewage; the data acquisition unit is used for acquiring the demand information; the data analysis unit is used for determining a heating component of the sedimentation heating unit which needs to be started and the operation power of the heating component according to the colloidal sewage collection duty ratio; the temperature compensation unit is used for adjusting the operation power of the heating component in the on state according to the ambient temperature; the membrane filtration compensation unit is used for determining a membrane filtration compensation mode according to the membrane flux state; the method solves the problems that uniform treatment parameters in the prior art cannot meet the requirement of colloid content change of sewage in actual application scenes, colloid treatment effect is poor or resource use is excessive easily caused.
Description
Technical Field
The invention relates to the field of sewage treatment, in particular to a sewage collection and purification system based on a ceramic membrane.
Background
The sewage generated in the chemical production process contains various harmful substances and chemical substances, including organic matters, heavy metals, soluble salts, toxic compounds and the like. These contaminants, if discharged directly into natural bodies of water or soil without treatment, can severely disrupt the ecosystem and cause damage to biodiversity. The chemical wastewater treatment can remove or reduce the concentration of harmful substances, reduce the adverse effect on the environment, and protect the health of water bodies and ecological systems. At present, in a treatment system for chemical wastewater, a sedimentation tank is generally used for carrying out wastewater sedimentation treatment and a ceramic membrane is used for carrying out fine filtration treatment, however, the chemical wastewater often contains a large amount of colloid, which is easy to cause the ceramic membrane to be blocked in the use process, so that how to effectively remove the colloid in the wastewater in the sedimentation treatment is a problem to be solved currently.
Chinese patent publication No. CN113912239a discloses a device and method for treating high-oil colloid-containing sewage, the device comprises a heat source device, a pre-separation oil collecting tank, a colloid-collecting decoloring tank, a flocculation water purifying tank and a dosing device; when the device is operated, the pre-separation oil collecting tank is only heated and electrified, the gel-collecting decolorizer is added into the gel-collecting decolorizer, and the flocculating and purifying water tank is added with the flocculating agent and the coagulant aid; the invention discloses a method for heating, vortex and micro-vortex separation, turbulence and micro-vortex air flotation oil removal and coagulation, electronic breaking of emulsified particles, chemical adding, gel coagulation decoloration and flocculation, adsorption coalescence and sedimentation separation, but the colloid content of sewage discharged by different departments or workshops of a chemical plant is different, so that in practical application, the colloid content in sewage treated by a sewage treatment system is not fixed, thereby causing the problem that uniform treatment parameters cannot meet the change of the colloid content of sewage in a practical application scene, and being easy to cause poor colloid treatment effect or excessive resource use.
Disclosure of Invention
Therefore, the invention provides a sewage collection and purification system based on a ceramic membrane, which is used for solving the problems that uniform treatment parameters in the prior art cannot meet the requirement of sewage colloid content change in actual application scenes, colloid treatment effect is poor easily caused, or resource use is excessive.
In order to achieve the above object, the present invention provides a ceramic membrane-based sewage collection and purification system, comprising:
a sedimentation heating unit comprising a sedimentation tank for performing sedimentation treatment on the sewage after the rough filtration and a heating component for heating the sewage;
the filtering unit comprises a plurality of filtering membrane devices and is used for carrying out fine filtration on the settled sewage;
the data acquisition unit is connected with the sedimentation heating unit and the filtering unit and is used for acquiring the demand information;
the data analysis unit is connected with the sedimentation heating unit, the filtering unit and the data acquisition unit and is used for determining a heating component of the sedimentation heating unit which needs to be started and the operation power of the heating component according to the colloidal sewage collection duty ratio;
the temperature compensation unit is connected with the sedimentation heating unit, the filtering unit, the data acquisition unit and the data analysis unit and is used for adjusting the operation power of the heating assembly in the on state according to the ambient temperature and adjusting the operation power of the heating assembly corresponding to the effective illumination area according to the illumination distribution state;
the membrane filtration compensation unit is connected with the sedimentation heating unit, the filtering unit, the data acquisition unit and the data analysis unit and is used for determining a membrane filtration compensation mode according to a membrane flux state, wherein the membrane filtration compensation mode comprises a first membrane filtration compensation mode for adjusting sedimentation time and a second membrane filtration compensation mode for cleaning a filtering membrane device;
the heating assembly comprises an upper layer heating assembly and a lower layer heating assembly, and the demand information comprises a first sewage collection amount, a second sewage collection amount, an oil content of settled sewage, an environment temperature and a total flux of the filtering unit in unit time.
Further, the data analysis unit determines the working mode of the sedimentation heating unit according to the colloidal wastewater collection ratio under the first data analysis condition;
if the colloid sewage collection duty ratio is in a first preset collection duty ratio range, the data analysis unit judges a heating component which needs to be started and the operation power of the heating component according to the oil collection water content of the sedimentation heating unit;
if the colloidal sewage collection duty ratio is in a second preset collection duty ratio range, the data analysis unit judges that a heating component which needs to be started and the operation power of the heating component are determined according to the drainage reference value of the sewage collection module;
wherein the first data analysis condition is the end of a single monitoring period.
Further, the data analysis unit detects the oil collection water content of the sedimentation heating unit under the first working condition, and when the oil collection water content of the sedimentation heating unit is in a range of oil collection water content to be controlled, the upper layer heating assembly is started, and the operation power of the upper layer heating assembly is determined according to the oil collection water content;
the operation power of the upper heating component and the water content of the oil collection are in positive correlation;
the first working condition is that the colloidal sewage collection duty ratio is in a first preset collection duty ratio range.
Further, the data analysis unit detects the drainage reference value of the sewage collection module under the second working condition, and when the drainage reference value of the sewage collection module is in the range of the drainage reference value to be controlled, the lower layer heating assembly is started, and the operation power of the lower layer heating assembly is determined according to the drainage reference value of the sewage collection module;
the operation power of the lower-layer heating assembly and the drainage reference value of the sewage collection module are in positive correlation;
the second working condition is that the colloidal sewage collection duty ratio is in a second preset collection duty ratio range.
Further, the temperature compensation unit detects the current ambient temperature under the first temperature compensation condition and increases and adjusts the operating power of the heating component in the on state when the ambient temperature is in a first preset ambient temperature range;
the increase of the running power and the ambient temperature are in a negative correlation;
the first temperature compensation condition is that the judgment of the working mode of the sedimentation heating unit is completed, and the upper layer heating component or the lower layer heating component is started.
Further, the temperature compensation unit determines whether to perform secondary adjustment on the operating power according to the illumination distribution state under the second temperature compensation condition, where the secondary adjustment includes: and the temperature compensation unit judges that the running power of the heating component corresponding to the effective illumination area is reduced and regulated when the illumination distribution state is in a preset illumination distribution state.
Further, the membrane filtration compensation unit detects a membrane flux state under a first membrane filtration condition, and if the membrane flux state is in a first preset membrane flux state, the membrane filtration compensation unit judges that the sedimentation time is regulated;
if the membrane flux state is in a second preset membrane flux state, the membrane filtration compensation unit judges that the filtration membrane device is cleaned;
wherein the first membrane filtration condition is that the determination of the operation mode of the sedimentation heating unit is completed and the single membrane flux monitoring period is ended.
Further, the membrane filtration compensation unit increases and adjusts the sedimentation time according to the membrane flux difference value under the second membrane filtration compensation condition;
the increment of the sedimentation time and the membrane flux difference value are in a negative correlation;
the second membrane filtration compensation condition is that the flux state is in a first preset membrane flux state.
Further, the membrane filtration compensation unit determines a cleaning mode of the filtration membrane device according to the sewage collection rate under the third membrane filtration compensation condition, wherein the cleaning mode comprises: the cleaning is carried out for the single filtering membrane device in sequence,
or cleaning all the filtering membrane devices;
the third membrane filtration compensation condition is that the flux state is in a second preset membrane flux state.
Further, the membrane filtration compensation unit determines the flushing force according to the sewage collection rate difference value under the fourth membrane filtration compensation condition;
the difference value of the flushing force and the sewage collection rate is in positive correlation;
the fourth membrane filtration compensation condition is a cleaning mode for selecting to clean all the filtration membrane devices.
Compared with the prior art, the invention has the beneficial effects that the data analysis unit in the technical scheme of the invention determines the heating component which needs to be started and the operating power of the heating component according to the colloidal sewage collection ratio, so that the heating component can better meet the actual requirements on the temperature control effect of sewage, the sedimentation effect of the colloid in the sewage is improved through the heating component, and the oil layer in the sewage is easier to rise and discharge through the upper heating component; the temperature compensation unit adjusts the operation power of the heating component in the on state according to the ambient temperature and adjusts the operation power of the heating component corresponding to the effective illumination area according to the illumination distribution state, so that the operation power of the heating component is more in line with the requirements of actual working scenes, the energy utilization efficiency of the invention is improved on the premise of guaranteeing the heating effect by reducing and adjusting the operation power of the heating component corresponding to the effective illumination area, and the membrane filtration compensation unit determines the membrane filtration compensation mode according to the membrane flux state, so that the sewage treatment efficiency of the invention is low due to the blockage of the membrane filtration device, and the service life of the membrane filtration device is prolonged.
Drawings
FIG. 1 is a unit connection diagram of a ceramic membrane-based wastewater collection and purification system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a sedimentation heating unit according to an embodiment of the present invention;
FIG. 3 is a flow chart of determining the working mode of the sedimentation heating unit by the data analysis unit according to the colloidal wastewater collection ratio in the embodiment of the invention;
in the figure: an upper layer heating component 1, a water inlet pipeline 2, a water draining component 3 and a lower layer heating component 4.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1, which is a unit connection diagram of a ceramic membrane-based sewage collection and purification system according to an embodiment of the present invention, the present invention provides a ceramic membrane-based sewage collection and purification system, including:
a sedimentation heating unit comprising a sedimentation tank for performing sedimentation treatment on the sewage after the rough filtration and a heating component for heating the sewage;
the filtering unit comprises a plurality of filtering membrane devices and is used for carrying out fine filtration on the settled sewage;
the data acquisition unit is connected with the sedimentation heating unit and the filtering unit and is used for acquiring the demand information;
the data analysis unit is connected with the sedimentation heating unit, the filtering unit and the data acquisition unit and is used for determining a heating component of the sedimentation heating unit which needs to be started and the operation power of the heating component according to the colloidal sewage collection duty ratio;
the temperature compensation unit is connected with the sedimentation heating unit, the filtering unit, the data acquisition unit and the data analysis unit and is used for adjusting the operation power of the heating assembly in the on state according to the ambient temperature and adjusting the operation power of the heating assembly corresponding to the effective illumination area according to the illumination distribution state;
the membrane filtration compensation unit is connected with the sedimentation heating unit, the filtering unit, the data acquisition unit and the data analysis unit and is used for determining a membrane filtration compensation mode according to a membrane flux state, wherein the membrane filtration compensation mode comprises a first membrane filtration compensation mode for adjusting sedimentation time and a second membrane filtration compensation mode for cleaning a filtering membrane device;
the heating assembly comprises an upper layer heating assembly and a lower layer heating assembly, and the demand information comprises a first sewage collection amount, a second sewage collection amount, an oil content of settled sewage, an environment temperature and a total flux of the filtering unit in unit time.
Referring to fig. 2, which is a schematic structural diagram of a sedimentation heating unit according to an embodiment of the invention, the sedimentation heating unit includes:
the sedimentation tank is a steel structure round tank with the upper surface diameter of 32 meters and is used for carrying out sedimentation treatment on the sewage after coarse filtration;
a water inlet pipe 2 provided inside the settling tank, and discharging the sewage after the rough filtration into the settling tank through a water discharge assembly 3 connected to the water inlet pipe 2;
the upper layer heating assembly 1 is arranged at the upper end of the water inlet pipeline 2 in the sedimentation tank and is used for heating sewage at the installation position of the upper layer heating assembly 1 in the sedimentation tank so as to improve the separation efficiency of sewage upper layer greasy dirt and sewage;
the lower layer heating component 4 is arranged at the lower end of the water inlet pipeline 2 in the sedimentation tank and is used for heating sewage at the installation position of the lower layer heating component 4 in the sedimentation tank so as to improve the sedimentation rate of colloid in the sewage;
a clear water discharge end for discharging the settled clear water;
the oil stain discharge device is arranged at the top end of the sedimentation tank and comprises a rotary scraping plate for pushing an oil stain layer on the surface of sewage to the edge of the sedimentation tank and an oil stain guide groove for collecting oil stains;
the air floatation device is arranged in the sedimentation tank and is used for spraying out fine bubbles to wrap suspended particles in water to rise and float, and scraping plate mechanical equipment is arranged above the sedimentation tank, and when the particles float along with the bubbles, the particles are scraped by the scraping plate and discharged;
the sedimentation tank is connected with a dosing device, and polyacrylamide is added into the sedimentation tank according to user instruction information so as to thicken particles in sewage and form a larger-scale polymer, thereby improving the sedimentation effect;
it will be appreciated that heating the wastewater settling tank increases the separation efficiency of the oil, by heating, the viscosity of the oil is reduced, making it easier to separate from the aqueous phase, and the stability of the iron aluminium colloid, organic matter colloid and silica colloid is reduced, the input of thermal energy increases the thermal movement of the colloid particles, resulting in an increase in the frequency of collisions between the particles, thereby destroying the stability of the colloid, more easily aggregating into larger agglomerates, and combining with other particles in the wastewater to form a precipitate.
Referring to fig. 1 to 3, the data analysis unit determines a working mode of the sedimentation heating unit according to a colloidal wastewater collection ratio under a first data analysis condition;
if the colloid sewage collection duty ratio is in a first preset collection duty ratio range, the data analysis unit judges a heating component which needs to be started and the operation power of the heating component according to the oil collection water content of the sedimentation heating unit;
if the colloidal sewage collection duty ratio is in a second preset collection duty ratio range, the data analysis unit judges that a heating component which needs to be started and the operation power of the heating component are determined according to the drainage reference value of the sewage collection module;
wherein the first data analysis condition is the end of a single monitoring period.
The values in the first preset collection duty ratio range are smaller than 30%, and the values in the second preset collection duty ratio range are larger than or equal to 30%.
Specifically, the colloid sewage collection duty ratio is M1/M2, M1 is the collected sewage collection amount in a single monitoring period of the sewage collection module, M2 is the collected sewage collection amount in a single monitoring period of the sewage collection module, and both the sewage collection module and the sewage collection module are drainage collection devices with monitoring drainage amounts; collecting and analyzing wastewater generated by each production department in advance, namely taking wastewater generated by each production department with the same quality, respectively detecting colloid content, marking the production department as one type of production department if the colloid concentration in the wastewater corresponding to the production department is more than 30mg/L, marking the production department as two types of production departments if the colloid concentration in the wastewater corresponding to the production department is less than or equal to 30mg/L, marking a drainage collection device corresponding to the one type of production department as one type of sewage collection module, and marking a drainage collection device corresponding to the two types of production departments as two types of sewage collection module; the drainage collection device can be, but not limited to, a drainage pipeline, wherein a flow monitoring device is arranged in the drainage pipeline, one type of sewage collection amount is the total flow of one type of sewage in a single monitoring period, and the second type of sewage collection amount is the total flow of the second type of sewage in the single monitoring period; the method for detecting the colloid content in the wastewater can adopt a laser particle size analysis method, and the size distribution and concentration of colloid particles are measured by using a laser particle size analyzer, and the concentration and the particle size of the colloid particles are determined by the scattering property of the colloid particles on laser. The colloid of the invention comprises iron-aluminum colloid, organic colloid and silica colloid.
Specifically, the data analysis unit detects the oil collection water content of the sedimentation heating unit under a first working condition, and when the oil collection water content of the sedimentation heating unit is in a range of oil collection water content to be controlled, the upper layer heating assembly is started, and the operation power of the upper layer heating assembly is determined according to the oil collection water content;
the operation power of the upper heating component and the water content of the oil collection are in positive correlation;
if the water content of the oil collection is smaller than any value in the water content range of the oil collection to be controlled, an upper layer heating assembly is not required to be started;
the first working condition is that the colloidal sewage collection duty ratio is in a first preset collection duty ratio range.
Specifically, the values in the water content range of the oil collection to be controlled are all larger than 5%, and the water content of the oil collection is the ratio of the water content in the oil body discharged in a single monitoring period of the sedimentation heating unit.
Specifically, the data analysis unit detects the drainage reference value of the sewage collection module under the second working condition, and when the drainage reference value of the sewage collection module is in the range of the drainage reference value to be controlled, the lower layer heating assembly is started, and the operation power of the lower layer heating assembly is determined according to the drainage reference value of the sewage collection module;
the operation power of the lower-layer heating assembly and the drainage reference value of the sewage collection module are in positive correlation;
the second working condition is that the colloidal sewage collection duty ratio is in a second preset collection duty ratio range.
Specifically, the drainage reference value is a type of sewage collection amount in a last monitoring period, the values in the range of the drainage reference value to be controlled are all larger than a preset allowable treatment value, the preset allowable treatment value is 30% of the maximum value of the clean water treated in a single monitoring period of the sedimentation heating unit, if the drainage reference value is smaller than or equal to the preset allowable treatment value, the lower-layer heating assembly is started, the operation power of the lower-layer heating assembly is set as the reference operation power, the reference operation power is set by a user, and the reference operation power is smaller than the operation power of the lower-layer heating assembly determined according to the drainage reference value of the type of sewage collection module.
Under the second working condition, the upper heating assembly is kept in an on state, fixed reference running power is kept, the heating effect of sewage is increased by cooperating with the lower heating assembly, and then the sedimentation effect of colloid in the sewage is improved, and meanwhile, the condensation of an oil layer on the surface of the sewage is avoided.
Specifically, the temperature compensation unit detects the current ambient temperature under a first temperature compensation condition and increases and adjusts the operating power of the heating component in an open state when the ambient temperature is in a first preset ambient temperature range;
the increase of the running power and the ambient temperature are in a negative correlation;
if the ambient temperature is in the second preset ambient temperature range, the operating power of the heating component in the opening state does not need to be increased and adjusted;
the first temperature compensation condition is that the judgment of the working mode of the sedimentation heating unit is completed, and the upper layer heating component or the lower layer heating component is started.
Specifically, the values in the first preset environmental temperature range are all smaller than 10 ℃, and the values in the second preset environmental temperature range are all larger than or equal to 10 ℃.
Specifically, the temperature compensation unit determines whether to perform secondary adjustment on the operating power according to the illumination distribution state under the second temperature compensation condition, where the secondary adjustment includes: and the temperature compensation unit judges that the running power of the heating component corresponding to the effective illumination area is reduced and regulated when the illumination distribution state is in a preset illumination distribution state.
The preset illumination distribution state is that the illumination area of the heat preservation plate is larger than the preset illumination area, the effective illumination area is that the temperature of the heat preservation plate is larger than the preset illumination temperature, the temperature of the heat preservation plate is smaller than or equal to the preset illumination temperature, and it is judged that reduction and adjustment of the operation power of the heating assembly corresponding to the effective illumination area are not needed; the preset illumination area is 15% of the side area of the sedimentation heating unit, and when the temperature detected by the temperature detection device on the heat preservation plate is greater than 10 ℃, the temperature of the heat preservation plate is greater than the preset illumination temperature, and the preset illumination temperature is 10 ℃.
Specifically, the membrane filtration compensation unit detects a membrane flux state under a first membrane filtration condition, and if the membrane flux state is in a first preset membrane flux state, the membrane filtration compensation unit judges that the sedimentation time is regulated;
if the membrane flux state is in a second preset membrane flux state, the membrane filtration compensation unit judges that the filtration membrane device is cleaned;
wherein the first membrane filtration condition is that the determination of the operation mode of the sedimentation heating unit is completed and the single membrane flux monitoring period is ended.
The sedimentation time is the sewage residence time of the sedimentation tank, namely the sedimentation treatment time of the sewage in the sedimentation tank after the sewage enters the sedimentation tank, and when the sedimentation time is reached, a clear water discharge end is opened for discharging clear water after sedimentation is completed.
Specifically, if the filtration flux of the membrane filtration compensation unit in the current monitoring period is greater than 50% of the preset membrane filtration flux and less than or equal to 70% of the preset membrane filtration flux, the membrane flux state is recorded as being in a first preset membrane flux state, if the filtration flux of the membrane filtration compensation unit in the current monitoring period is less than or equal to 50% of the preset membrane filtration flux, the membrane flux state is recorded as being in a second preset membrane flux state, and if the filtration flux of the membrane filtration compensation unit in the current monitoring period is greater than 70% of the preset membrane filtration flux, the membrane flux state is qualified, and the filtration unit is not required to be regulated; the filtering flux is the water flow passing through all filtering membrane devices in the filtering unit in the current monitoring period.
Specifically, the membrane filtration compensation unit increases and adjusts the sedimentation time according to the membrane flux difference value under the second membrane filtration compensation condition;
the increment of the sedimentation time and the membrane flux difference value are in a negative correlation;
the second membrane filtration compensation condition is that the flux state is in a first preset membrane flux state.
The membrane flux difference value is a value obtained by subtracting the filtration flux of the current monitoring period membrane filtration compensation unit from the preset membrane filtration flux.
Specifically, the membrane filtration compensation unit determines a cleaning mode of the filtration membrane device according to the sewage collection rate under the third membrane filtration compensation condition, wherein the cleaning mode comprises: if the sewage collection rate is greater than or equal to the preset sewage collection rate, cleaning the single filtering membrane device in sequence,
or if the sewage collection rate is smaller than the preset sewage collection rate, stopping the sedimentation heating unit from producing water and cleaning all the filtering membrane devices;
the third membrane filtration compensation condition is that the flux state is in a second preset membrane flux state.
Specifically, when the sewage collection rate is greater than or equal to the preset sewage collection rate, the cleaning of the single filtering membrane device is on-line cleaning, the on-line cleaning is to close the water pipeline connecting the filtering membrane device to be cleaned with the sedimentation heating unit, and the reverse cleaning of the filtering membrane device is performed through the reverse cleaning pipeline, which is easy to understand by those skilled in the art, and is not repeated herein.
The sewage collection rate is the total clean water flow transmitted from the sedimentation heating unit to the filtering unit in a single monitoring period, the preset sewage collection rate is the sum of the maximum allowable flux corresponding to the single monitoring period of each filtering membrane device, and the maximum allowable flux of the filtering membrane device is related to the specification of the filtering membrane device, which is easily understood by those skilled in the art and is not described herein.
Specifically, the membrane filtration compensation unit determines the flushing force according to the sewage collection rate difference value under the fourth membrane filtration compensation condition;
the difference value of the flushing force and the sewage collection rate is in positive correlation;
the fourth membrane filtration compensation condition is that a cleaning mode for cleaning all the filtering membrane devices is selected, and the flushing force is the cleaning water pressure when the filtering membrane devices can only be cleaned.
Specifically, the difference in the sewage collection rate is a value obtained by subtracting the sewage collection rate from the preset sewage collection rate.
The filtering unit comprises a plurality of filtering membrane devices which are in parallel connection and are respectively connected with a main water pipeline through a sub water pipeline, the main water pipeline is connected with a clear water discharge end of the sedimentation heating unit, each sub water pipeline can be independently closed and opened, and a single filtering membrane device is respectively connected with a backwashing pipeline for carrying out reverse cleaning through a reverse cleaning pipeline.
The filtering membrane device can be a ceramic membrane filtering device, the ceramic membrane is a non-woven membrane material with ceramic texture manufactured by adopting a special process, the ceramic membrane has extremely small pores and high strength, only impurities smaller than the pore size of the membrane are allowed to pass through when sewage enters the gaps of the ceramic flat membrane, and impurities larger than the pore size of the membrane are intercepted and separated by the surface of the membrane, so that the content of understanding of the person skilled in the art is omitted.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
The foregoing description is only of the preferred embodiments of the invention and is not intended to limit the invention; various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A ceramic membrane-based wastewater collection and purification system, comprising:
a sedimentation heating unit comprising a sedimentation tank for performing sedimentation treatment on the sewage after the rough filtration and a heating component for heating the sewage;
the filtering unit comprises a plurality of filtering membrane devices and is used for carrying out fine filtration on the settled sewage;
the data acquisition unit is connected with the sedimentation heating unit and the filtering unit and is used for acquiring the demand information;
the data analysis unit is connected with the sedimentation heating unit, the filtering unit and the data acquisition unit and is used for determining a heating component of the sedimentation heating unit which needs to be started and the operation power of the heating component according to the colloidal sewage collection duty ratio;
the temperature compensation unit is connected with the sedimentation heating unit, the filtering unit, the data acquisition unit and the data analysis unit and is used for adjusting the operation power of the heating assembly in the on state according to the ambient temperature and adjusting the operation power of the heating assembly corresponding to the effective illumination area according to the illumination distribution state;
the membrane filtration compensation unit is connected with the sedimentation heating unit, the filtering unit, the data acquisition unit and the data analysis unit and is used for determining a membrane filtration compensation mode according to a membrane flux state, wherein the membrane filtration compensation mode comprises a first membrane filtration compensation mode for adjusting sedimentation time and a second membrane filtration compensation mode for cleaning a filtering membrane device;
the heating assembly comprises an upper layer heating assembly and a lower layer heating assembly, and the demand information comprises a first sewage collection amount, a second sewage collection amount, an oil content of settled sewage, an environment temperature and a total flux of the filtering unit in unit time.
2. The ceramic membrane based wastewater collection and purification system of claim 1, wherein the data analysis unit determines an operating mode of the sedimentation heating unit based on a colloidal wastewater collection duty ratio under the first data analysis condition;
if the colloid sewage collection duty ratio is in a first preset collection duty ratio range, the data analysis unit judges a heating component which needs to be started and the operation power of the heating component according to the oil collection water content of the sedimentation heating unit;
if the colloidal sewage collection duty ratio is in a second preset collection duty ratio range, the data analysis unit judges that a heating component which needs to be started and the operation power of the heating component are determined according to the drainage reference value of the sewage collection module;
wherein the first data analysis condition is the end of a single monitoring period.
3. The ceramic membrane-based wastewater collection and purification system according to claim 2, wherein the data analysis unit detects the oil collection water content of the sedimentation heating unit under a first working condition, and when the oil collection water content of the sedimentation heating unit is in a range of oil collection water content to be controlled, the upper heating assembly is started, and the operation power of the upper heating assembly is determined according to the oil collection water content;
the operation power of the upper heating component and the water content of the oil collection are in positive correlation;
the first working condition is that the colloidal sewage collection duty ratio is in a first preset collection duty ratio range.
4. The ceramic membrane-based wastewater collection and purification system according to claim 3, wherein the data analysis unit detects a drainage reference value of the wastewater collection module under the second working condition, and when the drainage reference value of the wastewater collection module is in a range of drainage reference values to be controlled, the lower heating assembly is started, and the operation power of the lower heating assembly is determined according to the drainage reference value of the wastewater collection module;
the operation power of the lower-layer heating assembly and the drainage reference value of the sewage collection module are in positive correlation;
the second working condition is that the colloidal sewage collection duty ratio is in a second preset collection duty ratio range.
5. The ceramic membrane based wastewater collection and purification system of claim 4, wherein the temperature compensation unit detects a current ambient temperature under a first temperature compensation condition and adjusts the operating power of the heating assembly in an on state when the ambient temperature is within a first preset ambient temperature range;
the increase of the running power and the ambient temperature are in a negative correlation;
the first temperature compensation condition is that the judgment of the working mode of the sedimentation heating unit is completed, and the upper layer heating component or the lower layer heating component is started.
6. The ceramic membrane based wastewater collection and purification system of claim 5, wherein the temperature compensation unit determines whether to secondarily adjust the operating power according to the illumination distribution state under the second temperature compensation condition, the secondarily adjusting comprising: and the temperature compensation unit judges that the running power of the heating component corresponding to the effective illumination area is reduced and regulated when the illumination distribution state is in a preset illumination distribution state.
7. The ceramic membrane-based sewage collection and purification system according to claim 4, wherein the membrane filtration compensation unit detects a membrane flux state under a first membrane filtration condition, and if the membrane flux state is in a first preset membrane flux state, the membrane filtration compensation unit determines to adjust for the sedimentation time;
if the membrane flux state is in a second preset membrane flux state, the membrane filtration compensation unit judges that the filtration membrane device is cleaned;
wherein the first membrane filtration condition is that the determination of the operation mode of the sedimentation heating unit is completed and the single membrane flux monitoring period is ended.
8. The ceramic membrane based wastewater collection and purification system of claim 7, wherein the membrane filtration compensation unit increases and adjusts settling time according to a membrane flux difference under a second membrane filtration compensation condition;
the increment of the sedimentation time and the membrane flux difference value are in a negative correlation;
the second membrane filtration compensation condition is that the flux state is in a first preset membrane flux state.
9. The ceramic membrane based wastewater collection and purification system of claim 8, wherein the membrane filtration compensation unit determines a cleaning mode of the filtration membrane device according to the wastewater collection rate under the third membrane filtration compensation condition, the cleaning mode comprising: the cleaning is carried out for the single filtering membrane device in sequence,
or cleaning all the filtering membrane devices;
the third membrane filtration compensation condition is that the flux state is in a second preset membrane flux state.
10. The ceramic membrane based wastewater collection and purification system of claim 9, wherein the membrane filtration compensation unit determines the rinsing force based on the wastewater collection rate difference under a fourth membrane filtration compensation condition;
the difference value of the flushing force and the sewage collection rate is in positive correlation;
the fourth membrane filtration compensation condition is a cleaning mode for selecting to clean all the filtration membrane devices.
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| US20150175463A1 (en) * | 2012-07-05 | 2015-06-25 | Faroe Maritime Technic | System and method for dewatering oil/water sludge |
| CN206616099U (en) * | 2017-03-21 | 2017-11-07 | 温州中绿环保科技有限公司 | A kind of sewage-treatment plant of temperature-controllable |
| US20200256814A1 (en) * | 2017-09-26 | 2020-08-13 | Commonwealth Scientific And Industrial Research Organisation | Detecting settled solids in a conduit for transporting a slurry |
| CN116395887A (en) * | 2023-04-11 | 2023-07-07 | 广东省广业装备制造集团有限公司 | Sewage integrated treatment system based on nano ceramic membrane |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150175463A1 (en) * | 2012-07-05 | 2015-06-25 | Faroe Maritime Technic | System and method for dewatering oil/water sludge |
| CN206616099U (en) * | 2017-03-21 | 2017-11-07 | 温州中绿环保科技有限公司 | A kind of sewage-treatment plant of temperature-controllable |
| US20200256814A1 (en) * | 2017-09-26 | 2020-08-13 | Commonwealth Scientific And Industrial Research Organisation | Detecting settled solids in a conduit for transporting a slurry |
| CN116395887A (en) * | 2023-04-11 | 2023-07-07 | 广东省广业装备制造集团有限公司 | Sewage integrated treatment system based on nano ceramic membrane |
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