CN112645510A - Household small-sized domestic sewage treatment system and method - Google Patents
Household small-sized domestic sewage treatment system and method Download PDFInfo
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- CN112645510A CN112645510A CN202110160702.6A CN202110160702A CN112645510A CN 112645510 A CN112645510 A CN 112645510A CN 202110160702 A CN202110160702 A CN 202110160702A CN 112645510 A CN112645510 A CN 112645510A
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- 239000010865 sewage Substances 0.000 title claims abstract description 144
- 238000000034 method Methods 0.000 title claims description 17
- 238000000746 purification Methods 0.000 claims abstract description 124
- 238000001514 detection method Methods 0.000 claims abstract description 71
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 238000012806 monitoring device Methods 0.000 claims abstract description 27
- 238000012544 monitoring process Methods 0.000 claims description 15
- 239000013049 sediment Substances 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 9
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 8
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 8
- 229910001385 heavy metal Inorganic materials 0.000 claims description 8
- 229910052698 phosphorus Inorganic materials 0.000 claims description 8
- 239000011574 phosphorus Substances 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 7
- 238000007790 scraping Methods 0.000 claims description 6
- 238000004062 sedimentation Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 5
- 238000005070 sampling Methods 0.000 abstract description 4
- 238000012372 quality testing Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 239000002910 solid waste Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000001376 precipitating effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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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
-
- 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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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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
- C02F2209/001—Upstream control, i.e. monitoring for predictive control
-
- 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/05—Conductivity or salinity
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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
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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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
- C02F2209/14—NH3-N
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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
- C02F2209/18—PO4-P
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/30—Flood prevention; Flood or storm water management, e.g. using flood barriers
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
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- Organic Chemistry (AREA)
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Abstract
The utility model provides a small-size domestic sewage treatment system is used at family, including the cistern, the cistern has the detection pond through the outlet pipe intercommunication, be equipped with water quality testing device in the detection pond, the detection pond communicates respectively and has the one-level purification tank, the second grade purification tank, tertiary purification tank, the detection pond is equipped with first valve with one-level purification tank intercommunication section, the detection pond is equipped with the second valve with second grade purification tank intercommunication section, the detection pond is equipped with the third valve with tertiary purification tank intercommunication section, the one-level purification tank, all be equipped with sewage monitoring devices in second grade purification tank and the tertiary purification tank, the one-level purification tank, second grade purification tank and tertiary purification tank are respectively through the one-level drain pipe, second grade drain pipe and tertiary drain. According to the invention, domestic sewage is respectively discharged into a plurality of purification tanks for purification treatment, a targeted purification treatment scheme is adopted, so that the purification efficiency can be improved, a sewage monitoring device is adopted to monitor the change of water quality in real time in the purification process, frequent sampling is not required, the purification process is simplified, and the working efficiency is improved.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a household small-sized domestic sewage treatment system and a household small-sized domestic sewage treatment method.
Background
In recent years, domestic sewage treatment is an important content for new rural construction, and rural sewage treatment is far behind economic development, and the awareness of local sewage treatment is behind, so that the management level of domestic sewage treatment facilities is low, the domestic sewage in rural areas is randomly discharged, and the local economic development is restricted by environmental pollution. Domestic sewage discharged by villagers permeates underground to pollute the underground water environment, seriously harms safe drinking water in rural areas, and simultaneously pollutes surrounding rivers and reservoirs. With the development of rural economy, China is used as a country with extremely short water resources, and the contradiction of the short water resources in rural areas is more prominent.
At present, most of common domestic sewage treatment systems are large sewage treatment plants, domestic sewage discharged by villagers is collected and treated uniformly and then discharged into the environment, and the pollution to the environment is reduced. The rural area is difficult to widely apply due to the fact that the villagers are dispersed in the residential areas, domestic sewage is not convenient to collect, and the cost of laying pipelines is high. Meanwhile, when domestic sewage is treated, the water quality needs to be detected regularly, and a common means is to sample and detect the domestic sewage regularly.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a household small-sized domestic sewage treatment system and method, which are used for performing basic detection on domestic sewage and respectively discharging the domestic sewage into a plurality of purification tanks for purification treatment, a targeted purification treatment scheme is adopted to improve the purification efficiency, a sewage monitoring device is adopted to monitor the water quality change in real time in the purification process, frequent sampling is not needed, the purification process is simplified, and the working efficiency is improved.
In order to achieve the above object, the present invention employs the following techniques:
the utility model provides a small-size domestic sewage treatment system is used at family, including the cistern, the cistern has the detection pond through the outlet pipe intercommunication, threaded connection has the collection bag below the outlet pipe, be equipped with water quality testing device in the detection pond, the detection pond communicates respectively there is the one-level purification tank, the second grade purification tank, tertiary purification tank, the detection pond is equipped with first valve with one-level purification tank intercommunication section, the detection pond is equipped with the second valve with second grade purification tank intercommunication section, the detection pond is equipped with the third valve with tertiary purification tank intercommunication section, the one-level purification tank, all be equipped with sewage monitoring device in second grade purification tank and the tertiary purification tank, the one-level purification tank, second grade purification tank and tertiary purification tank are respectively through the one-level drain pipe, second grade drain pipe.
Further, the outlet pipe is equipped with detachable filter screen and retaining valve, the filter screen is located between retaining valve and the collection bag, cistern inner wall bottom both ends are rotated and are connected with a pair of pivot, the pivot cover is equipped with the conveyer belt, evenly be equipped with a plurality of scraper blades on the conveyer belt, the scraper blade is parallel with the pivot, cistern inner wall bottom one end is equipped with the cooperation pole, cooperation pole top surface seted up with scraper blade tip removal orbit complex arc wall, the blowoff hole has been seted up to the cistern inner wall other end, the cistern outer wall is equipped with the cardboard, the cardboard slides and inserts and is equipped with the baffle, when cardboard and baffle complete cooperation, the baffle coincides with the blowoff hole.
Further, the water quality detection device is used for detecting the conductivity and the pH value of the domestic sewage.
Further, the sewage monitoring device is used for carrying out on-line monitoring on the COD value, the ammonia nitrogen concentration, the total phosphorus concentration and the heavy metal concentration in the domestic sewage.
Furthermore, a first-stage check valve is arranged on the first-stage drain pipe, a second-stage check valve is arranged on the second-stage drain pipe, and a third-stage check valve is arranged on the third-stage drain pipe.
Further, all be equipped with the purifying box in one-level purifying pond, second grade purifying pond and the tertiary purifying pond, the purifying box can add purification treatment liquid.
Furthermore, the water storage valve, the water quality detection device, the first valve, the second valve, the third valve, the sewage monitoring device, the primary check valve, the secondary check valve and the tertiary check valve are all connected with a PLC controller.
The invention adopts a domestic sewage treatment system to treat domestic sewage, and comprises the following steps:
s1: the domestic sewage is discharged into a water storage tank through a pipeline for sedimentation, and after the sedimentation is finished, a PLC controller is used for controlling the opening and closing of a water storage valve, so that the precipitated domestic sewage passes through a filter screen and enters a detection tank;
s2: the water quality detection device detects the water quality of the domestic sewage in the detection pool, the detection result range is divided into high pollution, medium pollution and low pollution, the PLC controls the first valve, the second valve and the third valve to be opened and closed according to the water quality detection result range, so that the high-pollution domestic sewage flows into the first-stage purification pool, the medium-pollution domestic sewage flows into the second-stage purification pool, and the low-pollution domestic sewage flows into the third-stage purification pool;
s3: adding purification treatment liquids with different proportions into purification boxes of the primary purification tank, the secondary purification tank and the tertiary purification tank, and carrying out online monitoring on the domestic sewage by using a sewage monitoring device;
s4: the PLC controls the primary check valve, the secondary check valve and the tertiary check valve to be opened and closed according to the monitoring result of the sewage monitoring device, so that qualified domestic sewage flows into the drainage pool, and the domestic sewage treatment process is completed.
Further, the detection indexes of the water quality detection device comprise conductivity and a pH value, and the monitoring indexes of the sewage monitoring device comprise a COD value, ammonia nitrogen concentration, total phosphorus concentration and heavy metal concentration.
Further, in S1, after the settled domestic sewage passes through the filter screen and enters the detection tank, the collection of the sediment includes the following steps:
s101: after the sewage in the water storage tank is discharged, the clamping plate is pushed to separate the clamping plate from the baffle plate, and the sewage discharge hole is exposed;
s102: the motor is started to drive the rotating shaft to rotate, the conveying belt drives the scraper to move along the bottom of the reservoir to push sediment to move towards the sewage discharge hole when moving, and when the scraper moves to the other rotating shaft, the moving track of the end part of the scraper is matched with an arc-shaped groove formed in the top surface of the matching rod;
s103: after the sediment is discharged from the sewage discharge hole, the motor is turned off to enable the clamping plate to be matched with the baffle.
The invention has the beneficial effects that:
1. the household small-sized domestic sewage treatment system and the household small-sized domestic sewage treatment method have the advantages that the domestic sewage is subjected to basic detection and is respectively discharged into the plurality of purification tanks for purification treatment, the purification efficiency can be improved by adopting a targeted purification treatment scheme, the water quality change is monitored in real time by adopting the sewage monitoring device in the purification process, frequent sampling is not needed, the purification process is simplified, and the working efficiency is improved.
2. The invention can collect and purify domestic sewage, has high automation degree, meets the use requirement of rural areas, does not need to lay long-distance pipelines and has low application cost.
3. The method comprehensively detects the pollution degree of the domestic sewage by adopting two indexes of the conductivity and the pH value, has simple index detection steps and high detection result accuracy, can realize the quick detection and transfer of the domestic sewage and reduce the detection cost, and grasps the purification effect of the domestic sewage in real time by carrying out online monitoring on the COD value, the ammonia nitrogen concentration, the total phosphorus concentration and the heavy metal concentration in the domestic sewage.
4. According to the invention, the purification treatment liquid is added according to the pollution degree of the domestic sewage, targeted purification treatment is carried out, the purification effect is improved, the waste of the purification treatment liquid is prevented, and the purification cost is reduced.
5. The invention utilizes the PLC to automatically collect the numerical values of the water quality detection device and the sewage monitoring device, controls the communication among a plurality of mechanisms according to the presetting of the system, and carries out the automatic transfer and purification treatment of the domestic sewage, and the system has simple operation and strong practicability.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention.
Fig. 2 is a schematic view of a partial structure a in fig. 1.
Fig. 3 is a schematic view of a portion B in fig. 1.
Fig. 4 is a schematic view of a portion C of fig. 1.
Fig. 5 is a cross-sectional view of the rotating shaft.
Fig. 6 is a schematic view of a portion D of fig. 5.
Fig. 7 is a schematic view of a portion E of fig. 5.
FIG. 8 is a flow chart of a method for using the domestic sewage treatment system of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings, but the described embodiments of the present invention are a part of the embodiments of the present invention, not all of the embodiments of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only for convenience of describing the present invention and simplifying the description. The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. The terms "parallel", "perpendicular", etc. do not require that the components be absolutely parallel or perpendicular, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; either directly or indirectly through intervening media, or through both elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1 to 7, a household small-sized domestic sewage treatment system comprises a water storage tank 1, wherein the water storage tank 1 is communicated with a detection pool 2 through a water outlet pipe 101, a collecting bag 102 is connected with the lower part of the water outlet pipe 101 in a threaded manner, a water quality detection device 201 is arranged in the detection pool 2, the detection pool 2 is respectively communicated with a primary purification pool 3, a secondary purification pool 4 and a tertiary purification pool 5, a first valve 301 is arranged at the communication section of the detection pool 2 and the primary purification pool 3, a second valve 401 is arranged at the communication section of the detection pool 2 and the secondary purification pool 4, a third valve 501 and a primary purification pool 3 are arranged at the communication section of the detection pool 2 and the tertiary purification, all be equipped with sewage monitoring device 6 in second grade purification tank 4 and the tertiary purification tank 5, one-level purification tank 3, second grade purification tank 4 and tertiary purification tank 5 are respectively through one-level drain pipe 302, second grade drain pipe 402 and tertiary drain pipe 502 intercommunication drainage pond 7.
Collecting and precipitating the discharged domestic sewage by using the water storage tank 1, precipitating solid waste in the domestic sewage to the bottom of the water storage tank 1 to facilitate the removal of the solid waste, then enabling the domestic sewage to pass through the water outlet pipe 101 to enter the detection tank 2 to detect water quality, discharging the domestic sewage into the primary purification tank 3, the secondary purification tank 4 or the tertiary purification tank 5 to perform purification treatment according to a water quality detection result, monitoring the water quality on line by using the sewage monitoring device 6, discharging the qualified domestic sewage into the drainage tank 7, and finishing the purification process; the system can collect and purify domestic sewage, adopts the sewage monitoring device 6 to monitor the water quality in real time, does not need to take samples regularly, has high automation degree, meets the use requirement of rural areas, simultaneously does not need to lay long-distance pipelines, and has low application cost.
Further, outlet pipe 101 is equipped with detachable filter screen 103 and retaining valve 104, filter screen 103 is located between retaining valve 104 and the collection bag 102, 1 inner wall bottom both ends of cistern rotate and are connected with a pair of pivot 105, pivot 105 cover is equipped with conveyer belt 106, evenly be equipped with a plurality of scraper blade 107 on the conveyer belt 106, scraper blade 107 is parallel with pivot 105, 1 inner wall bottom one end of cistern is equipped with cooperation pole 108, cooperation pole 108 top surface is seted up with scraper blade 107 tip removal orbit complex arc wall 109, the blowoff hole 110 has been seted up to the 1 inner wall other end of cistern, 1 outer wall of cistern is equipped with cardboard 111, cardboard 111 slides and inserts and is equipped with baffle 112, when cardboard 111 and baffle 112 complete cooperation, baffle 112 and blowoff hole 110 coincide, one of them pivot 105 is connected with motor.
Adopt detachable filter screen 103 can regularly carry out the filter screen change, guarantee the filter effect, prevent that large granule solid waste from getting into to cause in the outlet pipe to block up, utilize intercommunication and closing between water storage valve 104 control cistern 1 and the detection pond 2, by the separation and descend to collecting bag 102 in the action of gravity when the precipitate in the sewage reachs filter screen 103, prevent that the precipitate from blockking up outlet pipe 101, can take out the precipitate through taking off collecting bag 102.
Further, the water quality detection device 201 is used for detecting the conductivity and the pH value of the domestic sewage, and the sewage monitoring device 6 is used for monitoring the COD value, the ammonia nitrogen concentration, the total phosphorus concentration and the heavy metal concentration of the domestic sewage on line.
The method has the advantages that the pollution degree of the domestic sewage is comprehensively detected by adopting two indexes of the conductivity and the pH value, the index detection steps are simple, the detection result is high in accuracy, the domestic sewage can be quickly detected and transferred, and the detection cost is reduced; through carrying out on-line monitoring to COD value, ammonia nitrogen concentration, total phosphorus concentration and heavy metal concentration in the domestic sewage, grasp domestic sewage's purifying effect in real time to shift to in the drainage pond 7 after purifying.
Further, a primary check valve 303 is arranged on the primary drain pipe 302, a secondary check valve 403 is arranged on the secondary drain pipe 402, and a tertiary check valve 503 is arranged on the tertiary drain pipe 502.
Through set up one-level check valve 303 on one-level drain pipe 302, set up second grade check valve 403 on the second grade drain pipe 402, set up tertiary check valve 503 on the tertiary drain pipe 502, prevent that the domestic sewage after purifying in the drainage pond 7 from flowing back to in one-level purification tank 3, second grade purification tank 4 and the tertiary purification tank 5, avoid the secondary to purify, reduce domestic sewage treatment cost, improve purification efficiency.
Further, purification boxes 8 are arranged in the first-stage purification tank 3, the second-stage purification tank 4 and the third-stage purification tank 5, and purification treatment liquid can be added into the purification boxes 8.
According to the pollution degree of domestic sewage in the first-stage purification tank 3, the second-stage purification tank 4 and the third-stage purification tank 5, purification treatment liquid is added, targeted purification treatment is carried out, the purification effect is improved, the waste of the purification treatment liquid is prevented, and the purification cost is reduced.
Further, the water storage valve 104, the water quality detection device 201, the first valve 301, the second valve 401, the third valve 501, the sewage monitoring device 6, the primary check valve 303, the secondary check valve 403, and the tertiary check valve 503 are all connected to the PLC controller 9.
The PLC 9 is used for automatically collecting numerical values of the water quality detection device 201 and the sewage monitoring device 6, the water storage valve 104, the first valve 301, the second valve 401, the third valve 501, the primary check valve 303, the secondary check valve 403 and the tertiary check valve 503 are opened and closed according to system presetting, automatic transfer and purification treatment of domestic sewage are carried out, system operation is simple, and practicability is high.
As shown in FIG. 8, the method for treating domestic sewage by using the domestic sewage treatment system of the present invention comprises the following steps:
s1: the domestic sewage is discharged into the reservoir 1 through a pipeline for sedimentation, and after the sedimentation is finished, the PLC 9 is used for controlling the water storage valve 104 to be opened and closed, so that the precipitated domestic sewage passes through the filter screen 103 and enters the detection tank 2;
s2: the water quality detection device 201 detects the water quality of the domestic sewage in the detection pool 2, the detection indexes of the water quality detection device 201 comprise the conductivity and the pH value, the detection result range is divided into high pollution, medium pollution and low pollution, the PLC 9 controls the first valve 301, the second valve 401 and the third valve 501 to be opened and closed according to the water quality detection result range, so that the high-pollution domestic sewage flows into the primary purification pool 3, the medium-pollution domestic sewage flows into the secondary purification pool 4, and the low-pollution domestic sewage flows into the tertiary purification pool 5;
s3: purifying treatment solutions with different proportions are added into purifying boxes 8 of a primary purifying tank 3, a secondary purifying tank 4 and a tertiary purifying tank 5, and the domestic sewage is monitored on line by using a sewage monitoring device 6, wherein monitoring indexes of the sewage monitoring device 6 comprise a COD value, ammonia nitrogen concentration, total phosphorus concentration and heavy metal concentration;
s4: the PLC 9 controls the first-stage check valve 303, the second-stage check valve 403 and the third-stage check valve 503 to open and close according to the monitoring result of the sewage monitoring device 6, so that qualified domestic sewage flows into the drainage pool 7, and the domestic sewage treatment process is completed.
Further, in S1, after the settled domestic sewage passes through the filter screen 103 and enters the detection tank 2, the collection of the sediment is performed, and the collection of the sediment includes the following steps:
s101: after the sewage in the reservoir 1 is discharged, the clamping plate 111 is pushed to separate the clamping plate 111 from the baffle 112, and the sewage discharge hole 110 is exposed;
s102: the motor 113 is started to drive the rotating shaft 105 to rotate, the conveying belt 106 drives the scraping plate 107 to move along the bottom of the reservoir 1 to push sediment to move towards the sewage discharge hole 110 when moving, and when the scraping plate 107 moves to the other rotating shaft 105, the moving track of the end part of the scraping plate 107 is matched with an arc-shaped groove 109 formed in the top surface of the matching rod 108;
s103: after the sediment is discharged from the sewage discharge hole 110, the motor 113 is turned off to make the clamping plate 111 and the baffle plate 112 cooperate.
The household small-sized domestic sewage treatment system and the household small-sized domestic sewage treatment method have the advantages that the domestic sewage is subjected to basic detection and is respectively discharged into the plurality of purification tanks for purification treatment, the purification efficiency can be improved by adopting a targeted purification treatment scheme, the sewage monitoring device 6 is adopted for monitoring the water quality change in real time in the purification process, frequent sampling is not needed, the purification process is simplified, and the working efficiency is improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and it is apparent that those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A household small-sized domestic sewage treatment system is characterized by comprising a water storage tank (1), wherein the water storage tank (1) is communicated with a detection pool (2) through a water outlet pipe (101), a collecting bag (102) is connected below the water outlet pipe (101) in a threaded manner, a water quality detection device (201) is arranged in the detection pool (2), the detection pool (2) is respectively communicated with a primary purification pool (3), a secondary purification pool (4) and a tertiary purification pool (5), a first valve (301) is arranged at the communication section of the detection pool (2) and the primary purification pool (3), a second valve (401) is arranged at the communication section of the detection pool (2) and the secondary purification pool (4), a third valve (501) is arranged at the communication section of the detection pool (2) and the tertiary purification pool (5), and sewage monitoring devices (6) are respectively arranged in the primary purification pool (3), the secondary purification pool (4) and the tertiary purification pool (, the first-stage purification tank (3), the second-stage purification tank (4) and the third-stage purification tank (5) are communicated with the drainage tank (7) through a first-stage drainage pipe (302), a second-stage drainage pipe (402) and a third-stage drainage pipe (502) respectively.
2. The household small-sized domestic sewage treatment system according to claim 1, wherein: the water outlet pipe (101) is provided with a detachable filter screen (103) and a water storage valve (104), the filter screen (103) is arranged between the water storage valve (104) and the collection bag (102), two ends of the bottom of the inner wall of the reservoir (1) are rotatably connected with a pair of rotating shafts (105), the rotating shafts (105) are sleeved with a conveying belt (106), the conveying belt (106) is uniformly provided with a plurality of scraping plates (107), the scraping plates (107) are parallel to the rotating shafts (105), one end of the bottom of the inner wall of the reservoir (1) is provided with a matching rod (108), the top surface of the matching rod (108) is provided with an arc-shaped groove (109) matched with the moving track of the end part of the scraping plate (107), the other end of the inner wall of the reservoir (1) is provided with a sewage discharge hole (110), the outer wall of the reservoir (1) is provided with a clamping plate (111), the clamping plate, one of the rotating shafts (105) is connected with a motor (113).
3. The household small-sized domestic sewage treatment system according to claim 1, wherein: the water quality detection device (201) is used for detecting the conductivity and the pH value of the domestic sewage.
4. The household small-sized domestic sewage treatment system according to claim 1, wherein: the sewage monitoring device (6) is used for carrying out on-line monitoring on the COD value, the ammonia nitrogen concentration, the total phosphorus concentration and the heavy metal concentration in the domestic sewage.
5. The household small-sized domestic sewage treatment system according to claim 1, wherein: the primary water drainage pipe (302) is provided with a primary check valve (303), the secondary water drainage pipe (402) is provided with a secondary check valve (403), and the tertiary water drainage pipe (502) is provided with a tertiary check valve (503).
6. The household small-sized domestic sewage treatment system according to claim 1, wherein: purification boxes (8) are arranged in the first-stage purification tank (3), the second-stage purification tank (4) and the third-stage purification tank (5), and purification treatment liquid can be added into the purification boxes (8).
7. The household small-sized domestic sewage treatment system according to claim 1, wherein: the water storage valve (104), the water quality detection device (201), the first valve (301), the second valve (401), the third valve (501), the sewage monitoring device (6), the primary check valve (303), the secondary check valve (403) and the tertiary check valve (503) are all connected with a PLC (programmable logic controller) controller (9).
8. A method for treating domestic sewage by using the small-sized domestic sewage treatment system according to any one of claims 1 to 7, comprising the steps of:
s1: the domestic sewage is discharged into the reservoir (1) through a pipeline for sedimentation, and after the sedimentation is finished, the PLC (9) is used for controlling the water storage valve (104) to be opened and closed, so that the precipitated domestic sewage passes through the filter screen (103) and enters the detection tank (2);
s2: the water quality detection device (201) detects the water quality of the domestic sewage in the detection pool (2), the detection result range is divided into high pollution, medium pollution and low pollution, the PLC (9) controls the first valve (301), the second valve (401) and the third valve (501) to be opened and closed according to the water quality detection result range, so that the high-pollution domestic sewage flows into the primary purification pool (3), the medium-pollution domestic sewage flows into the secondary purification pool (4), and the low-pollution domestic sewage flows into the tertiary purification pool (5);
s3: purifying treatment liquids with different proportions are added into purifying boxes (8) of a first-stage purifying tank (3), a second-stage purifying tank (4) and a third-stage purifying tank (5), and a sewage monitoring device (6) is used for carrying out on-line monitoring on domestic sewage;
s4: the PLC (9) controls the primary check valve (303), the secondary check valve (403) and the tertiary check valve (503) to open and close according to the monitoring result of the sewage monitoring device (6), so that qualified domestic sewage flows into the drainage pool (7) to complete the domestic sewage treatment process.
9. The household small-sized domestic sewage treatment method according to claim 8, wherein: the detection indexes of the water quality detection device (201) comprise conductivity and pH value, and the monitoring indexes of the sewage monitoring device (6) comprise COD value, ammonia nitrogen concentration, total phosphorus concentration and heavy metal concentration.
10. The household small-sized domestic sewage treatment method according to claim 8, wherein: in S1, after the settled domestic sewage passes through the filter screen (103) and enters the detection pool (2), sediment collection is carried out, and the sediment collection comprises the following steps:
s101: after the sewage in the reservoir (1) is discharged, the clamping plate (111) is pushed to separate the clamping plate (111) from the baffle (112) and expose the sewage discharge hole (110);
s102: a motor (113) is started to drive a rotating shaft (105) to rotate, a conveying belt (106) drives a scraper (107) to move along the bottom of the reservoir (1) to push sediments to move towards a sewage discharge hole (110) when moving, and when the scraper (107) moves to the other rotating shaft (105), the moving track of the end part of the scraper (107) is matched with an arc-shaped groove (109) formed in the top surface of a matching rod (108);
s103: after the sediment is discharged from the sewage discharge hole (110), the motor (113) is turned off to enable the clamping plate (111) to be matched with the baffle plate (112).
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