CN114262006B - Domestic sewage and surface runoff collaborative purification system - Google Patents
Domestic sewage and surface runoff collaborative purification system Download PDFInfo
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- CN114262006B CN114262006B CN202111614058.1A CN202111614058A CN114262006B CN 114262006 B CN114262006 B CN 114262006B CN 202111614058 A CN202111614058 A CN 202111614058A CN 114262006 B CN114262006 B CN 114262006B
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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
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention discloses a domestic sewage and surface runoff cooperative purification system, which relates to the technical field of sewage treatment systems and comprises the following components: the bottom purification layer, the bottom plate and the upper purification layer are sequentially arranged in the pit from bottom to top, the bottom plate divides the cavity in the pit into a lower cavity and an upper cavity, the lower cavity is a sealed cavity, the lower purification layer is arranged in the lower cavity, the upper purification layer is paved on the bottom plate, the lower purification layer is communicated with a sewage inlet pipe, bottom pipe orifices of the plurality of connection pipes are all arranged above the lower purification layer, top pipe orifices of the connection pipes penetrate through the bottom plate and the upper purification layer, the bottom of the upper purification layer is provided with a total water collecting pipe, and the top pipe orifices of the connection pipes are always higher than the water level on the upper purification layer; the domestic sewage and surface runoff cooperative purification system disclosed by the invention improves the sewage treatment effect in rural areas.
Description
Technical Field
The invention relates to the technical field of sewage treatment systems, in particular to a domestic sewage and surface runoff cooperative purification system.
Background
With the comprehensive promotion of rural ecological protection and restoration work in various places in China, the technical demand for rural sewage treatment is increasing. At present, integrated treatment equipment based on an activated sludge method or a biomembrane method and ecological purification methods such as artificial wetland, artificial rapid infiltration and the like are widely used. In the use process, the integrated sewage purification technology has small occupied area, and can obtain stable operation effect under the conditions of stable water quality and water quantity of inflow water; the ecological purification method has low operation cost and convenient maintenance and management, and is suitable for the treatment of low-pollution water bodies containing nitrogen, phosphorus and other nutrient substances such as agricultural runoff.
But the rural population life of China is dispersed, the rural sewage discharge amount is small, the instantaneity is strong, the quaternary water amount fluctuation is large, the water yield and the water quality are difficult to stabilize, and the effective operation of the integrated equipment is difficult to meet. In addition, due to the elevation consideration of pipe network laying, rural sewage treatment facilities are mostly designed at low-lying places, and a large amount of surface runoffs enter the sewage treatment facilities in rainy seasons, so that active sludge is lost due to large hydraulic impact load, and the system is paralyzed and cannot effectively run; in seasons with less water, the integrated sewage treatment facilities have less water, and cannot reach the designed water level, so that the activated sludge in the system is dried and dead due to water shortage, the activity disappears, and the purification effect cannot be achieved. However, it is difficult to achieve high standard discharge of effluent by adopting a simple ecological purification method, so a new purification system is needed to solve the above problems.
Disclosure of Invention
The invention aims to provide a domestic sewage and surface runoff cooperative purification system, which solves the problems in the prior art and improves the sewage treatment effect in rural areas.
In order to achieve the above object, the present invention provides the following solutions:
the invention provides a domestic sewage and surface runoff cooperative purification system, which comprises: the sewage treatment device comprises a lower purification layer, an upper purification layer, a bottom plate and a plurality of connecting pipelines, wherein the lower purification layer, the bottom plate and the upper purification layer are sequentially arranged in a pit from bottom to top, the bottom plate divides a cavity in the pit into a lower cavity and an upper cavity, the lower cavity is a sealed cavity, the lower purification layer is arranged in the lower cavity, the upper purification layer is paved on the bottom plate, one end of the lower purification layer is provided with a sewage inlet pipe, the sewage inlet pipe is used for connecting a sewage pipe network or a preface sewage regulating tank, the lower purification layer is used for purifying domestic sewage, and bottom pipe orifices of a plurality of connecting pipelines are all arranged above the lower purification layer; the top surface of upper purification layer is less than ground, connecting tube's top mouth of pipe passes bottom plate and upper purification layer, upper purification layer's bottom is provided with the total water collecting pipe, the one end of total water collecting pipe is the outlet and follows lower floor purification layer stretches out, upper purification layer is used for carrying out purification treatment to surface runoff sewage, connecting tube's top mouth of pipe liftable, connecting tube's top mouth of pipe is higher than all the time water level on the upper purification layer.
Preferably, the lower purifying layer comprises a microorganism attaching filler layer, and an aeration pipeline is paved at the bottom of the microorganism attaching filler layer.
Preferably, the upper purifying layer comprises a particle filler layer laid on the bottom plate, and wet emergent aquatic plants are planted on the particle filler layer.
Preferably, the main water collecting pipe is communicated with the sewage inlet pipe below the main water collecting pipe through an overflow pipeline, a valve of a ball float valve is arranged in the overflow pipeline, a ball float of the ball float valve is arranged on the water surface in the lower purification layer, and when the water level in the lower purification layer is lower than a set threshold value, the valve in the overflow pipeline is opened, and otherwise, the valve is closed.
Preferably, a water inlet channel is dug on the ground, and the water inlet channel extends to the pit.
Preferably, the intelligent control system is further provided with an intelligent control system and a water level detector, the water level detector is used for detecting the water level in the upper purification layer, the water level detector and a driving device used for driving the pipe orifice at the top end of the connecting pipe to be in lifting communication connection, the water level detector is used for transmitting the water level information in the upper purification layer to the intelligent control system, the intelligent control system can control the pipe orifice at the top end of the connecting pipe to lift and descend, and the pipe orifice at the top end of the connecting pipe is always higher than the water level in the upper purification layer.
Preferably, the purifying device further comprises a water collecting pipe, wherein the water collecting pipe is evenly laid at the bottom of the upper purifying layer, a water inlet hole is formed in a pipeline in the water collecting pipe, the water collecting pipe is communicated with an inlet of the total water collecting pipe, and an outlet of the total water collecting pipe extends to the outer side of the upper purifying layer.
Preferably, the water level in the sewage pipe network or the preface sewage regulating tank is higher than the top pipe orifice of the connecting pipeline.
Preferably, a power pump for pumping the liquid in the sewage pipe network or the preface sewage regulating tank to the lower purifying layer is arranged in the sewage inlet pipe.
Preferably, the water level detector is a float-type automatic water level detector.
Compared with the prior art, the invention has the following technical effects:
according to the domestic sewage and surface runoff cooperative purification system provided by the invention, the lower purification layer for purifying the domestic sewage and the upper purification layer for purifying the surface runoff are separated into two mutually independent parts through the bottom plate, and the two parts are communicated through the plurality of connecting pipelines, so that the sewage purified by the lower purification layer can flow into the upper purification layer for further purification, the top pipe orifice of the connecting pipeline is always higher than the water level on the upper purification layer, the water on the upper purification layer is prevented from flowing into the lower purification layer, a large amount of surface runoff can be prevented from flowing into the lower purification layer in rainy seasons, a large hydraulic impact load is caused to the lower purification layer, activated sludge in the lower purification layer is lost, the system is paralyzed, the domestic sewage cannot effectively run, and the domestic sewage can be discharged out of the purification system after twice purification treatment, so that the purification effect is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a domestic sewage and surface runoff cooperative purification system provided by the invention;
FIG. 2 is an exploded view of the domestic sewage and surface runoff cooperative purification system provided by the invention;
in the figure: 1-lower purification layer, 2-upper purification layer, 3-connecting pipeline, 4-microorganism adhesion filler layer, 5-sewage inlet pipe, 6-aeration pipeline, 7-granule filler layer, 8-wet emergent aquatic plant, 9-water inlet channel, 10-farmland drainage runoff, 11-total water collecting pipe, 12-water inlet hole, 13-water level detector, 14-intelligent control system, 15-overflow pipeline, 16-valve, 17-floater.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a domestic sewage and surface runoff cooperative purification system, which solves the problems in the prior art and improves the sewage treatment effect in rural areas.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
The invention provides a domestic sewage and surface runoff cooperative purification system, as shown in figures 1-2, comprising: the lower purification layer 1, the upper purification layer 2, the bottom plate and the plurality of connecting pipelines 3 are sequentially arranged in the pit from bottom to top, the bottom plate divides the cavity in the pit into a lower cavity and an upper cavity, the lower cavity is a sealed cavity, the lower purification layer 1 is arranged in the lower cavity, the upper purification layer 2 is paved on the bottom plate, one end of the lower purification layer 1 is provided with a sewage inlet pipe 5, the sewage inlet pipe 5 is used for connecting a sewage pipe network or a preface sewage regulating tank, the lower purification layer 1 comprises a microorganism attaching filler layer 4, an aeration pipeline 6 is paved at the bottom of the microorganism attaching filler layer 4, the lower purification layer 1 is used for purifying domestic sewage, the sewage from a rural domestic sewage pipe network enters the microorganism attaching filler layer 4 through a sewage inlet pipe 5, the microorganism attaching filler layer 4 is a suspended fiber bundle combined filler, an aerobic-anaerobic alternate environment is formed in the area through intermittent aeration, and degradation, ammoniation, nitration, denitrification and the like of organic matters in the domestic sewage are completed by utilizing microorganisms attached and grown on the filler, and the aeration is performed for 2 h-intermittent 1h operation in daytime and 2 h-intermittent 2h operation in night; the bottom pipe orifices of the connecting pipes 3 are arranged above the lower purifying layer 1; the top surface of the upper purifying layer 2 is lower than the ground, the pipe orifice at the top end of the connecting pipe 3 penetrates through the bottom plate and the upper purifying layer 2 and extends out of the top end of the upper purifying layer 2, a water collecting pipe 11 is arranged at the bottom of the upper purifying layer 2, one end of the water collecting pipe 11 is a water outlet and extends out of the lower purifying layer 1, the upper purifying layer 2 comprises a particle filler layer 7 paved on the bottom plate, wet emergent aquatic plants 8 are planted on the particle filler layer 7, the wet emergent aquatic plants 8 are canna with the planting density of 12 plants per square meter, the water body flows downwards from the upper purifying layer 2, the deep degradation of nutrient substances such as nitrogen, phosphorus and the like is completed through the ingestion of the plants, the interception and adsorption of the filler and the metabolism of microorganisms attached and grown on the particle filler, and finally the water flows out of the system after being collected by the water collecting pipe 11. The upper purification layer 2 is used for purifying surface runoff sewage, the top pipe orifice of the connecting pipe 3 can be lifted, and the top pipe orifice of the connecting pipe 3 is always higher than the water level on the upper purification layer 2.
According to the domestic sewage and surface runoff cooperative purification system provided by the invention, the lower purification layer 1 for purifying the domestic sewage and the upper purification layer 2 for purifying the surface runoff are separated into two mutually independent parts through the bottom plate, and the two parts are communicated through the plurality of connecting pipelines 3, so that the sewage purified by the lower purification layer 1 can flow upwards into the upper purification layer 2 for further purification, the pipe orifice at the top end of the connecting pipeline 3 is always higher than the water level on the upper purification layer 2, the underwater on the upper purification layer 2 is prevented from flowing into the lower purification layer 1, a large amount of surface runoff can be prevented from flowing into the lower purification layer 1 in rainy seasons by the arrangement, a large hydraulic impact load is caused on the lower purification layer 1, active sludge in the lower purification layer 1 is lost, the system is paralyzed, the system cannot effectively run, the domestic sewage can be discharged out of the purification system after two purification treatments, and the purification effect is improved.
Further, the total water collecting pipe 11 is communicated with the sewage inlet pipe 5 below the total water collecting pipe 11 through the overflow pipeline 15, a valve 16 of a ball cock is arranged in the overflow pipeline 15, a ball float 17 of the ball cock is arranged on the water surface in the lower purification layer 1, when the water level in the lower purification layer 1 is lower than a set threshold value, the valve 16 in the overflow pipeline 15 is opened, otherwise, the valve 16 is closed, when domestic sewage is less or the water level of the lower purification layer 1 is difficult to reach a designed water level, the valve 16 is controlled to be opened by the ball float 17, water in the total water collecting pipe 11 of the upper purification layer 2 enters the lower purification layer 1 through the overflow pipeline 15 to be supplied with water, and when the water level gradually reaches the set water level, the ball float 17 controls the valve 16 to be closed, so that the designed water level of the lower purification layer 1 is maintained, the basic activity of the lower microorganisms is maintained, and the problem of collapse of a rural sewage treatment system caused by drying and death of microorganisms in a dead water season is solved.
Further, a water inlet channel 9 is dug on the ground, the water inlet channel 9 extends to a pit, rainwater collected from rural hardened roads and the like directly enters the upper purification layer 2 through the water inlet channel 9, peripheral farmland drainage enters the upper purification layer 2 through a diffusion effect, typical pollutants in the surface source pollution are nitrogen and phosphorus, the surface source pollution also flow from top to bottom, the pollutants are removed through ingestion of plants, interception and adsorption of fillers and metabolism of microorganisms attached and grown on the particle fillers, and finally the total water collection pipe 11 paved at the bottom of the upper purification layer 2 is collected and flows out of the system.
Further, domestic sewage and surface runoff cooperative purification system still include intelligent control system 14 and water level detector 13, water level detector 13 is used for detecting the water level in the upper strata purification layer 2, water level detector 13 and be used for driving the drive arrangement communication connection that the mouth of pipe goes up and down in the connecting tube 3 top, water level detector 13 is used for transmitting the water level information in the upper strata purification layer 2 to intelligent control system 14, intelligent control system 14 can control the mouth of pipe in the top of connecting tube 3 to rise and descend, guarantee that the mouth of pipe in the top of connecting tube 3 is higher than the water level in the upper strata purification layer 2 all the time, when coming from inlet canal 9 or farmland drainage runoff more, water level exceeds the threshold value that water level detector 13 sets for, intelligent control system 14 rises liftable connecting tube 3, avoid runoff inflow to get into lower floor purification layer 1, effectively solve the problem of submerged lower floor purification layer 1 and mud loss.
Further, domestic sewage and surface runoff cooperative purification system still include the collector pipe, and the collector pipe is even to be laid in the bottom of upper purification layer 2, evenly is provided with inlet port 12 on the pipeline in the collector pipe to collect the water after the purification, the collector pipe communicates with the import of total collector pipe 11, and the export of total collector pipe 11 extends towards the outside of upper purification layer 2, and the granule filler diameter in the upper purification layer 2 is preferably greater than the size of inlet port 12, avoids the particulate matter to block up inlet port 12.
Further, the water level in the sewage pipe network or the preamble sewage regulating tank is higher than the top pipe orifice of the connecting pipe 3, so that the lower water flows to the upper layer through the connecting pipe 3.
Further, a power pump for pumping liquid in a sewage pipe network or a preface sewage regulating tank to the lower purification layer 1 is arranged in the sewage inlet pipe 5, so that lower water flows to the upper layer through the connecting pipeline 3.
Further, the water level detector 13 is a float-type automatic water level detector.
Furthermore, the pit can be in a rectangular structure with four vertical walls or a terrace structure with slopes arranged around, so that drainage and confluence of surrounding farmlands are facilitated.
Further, the construction area ratio of the lower purification layer 1 to the upper purification layer 2 is 1:1-1:10, and the height ratio is 3:1-1:1; the filler used in the upper purifying layer 2 is neutral particle filler, the filling height is 1-1.5 m, the preset height of the pipe orifice of the connecting pipeline 3 is 1.3-1.8 m, and the filler is positioned at a position 30cm above the surface of the filler in the upper purifying layer 2; the float-type automatic water level controller of the layer is preset at the position 20cm above the surface of the filler; when the water level submerges the surface of the filler and does not exceed 20cm, the preset height of the pipe orifice of the liftable connecting pipeline 3 is unchanged; when the water level submerges the surface of the filler and exceeds 20cm, the float-type automatic water level controller transmits water level data to the intelligent control system 14, and the intelligent control system 14 controls the lifting connecting pipeline 3 to gradually rise and keep at 10-20cm above the water level;
the domestic sewage and surface runoff cooperative purification system provided by the invention organically combines a domestic sewage microorganism purification method with an ecological purification method of micro-polluted water bodies such as surface runoff, realizes bidirectional mutual water feeding of water quantity through a connecting system, realizes the purpose of cooperative treatment of a point and surface source pollution lime-green system, solves the problem that the rural domestic sewage is difficult to stably operate due to large water quantity fluctuation, and remarkably improves the sewage treatment level in rural areas.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (7)
1. A domestic sewage and surface runoff cooperative purification system is characterized in that: comprising the following steps: the sewage treatment device comprises a lower purification layer, an upper purification layer, a bottom plate and a plurality of connecting pipelines, wherein the lower purification layer, the bottom plate and the upper purification layer are sequentially arranged in a pit from bottom to top, the bottom plate divides a cavity in the pit into a lower cavity and an upper cavity, the lower cavity is a sealed cavity, the lower purification layer is arranged in the lower cavity, the upper purification layer is paved on the bottom plate, one end of the lower purification layer is provided with a sewage inlet pipe, the sewage inlet pipe is used for connecting a sewage pipe network or a preface sewage regulating tank, the lower purification layer is used for purifying domestic sewage, and bottom pipe orifices of a plurality of connecting pipelines are all arranged above the lower purification layer; the top surface of the upper purification layer is lower than the ground, a top pipe orifice of the connecting pipeline penetrates through the bottom plate and the upper purification layer, a total water collecting pipe is arranged at the bottom of the upper purification layer, one end of the total water collecting pipe is a water outlet and extends out of the lower purification layer, the upper purification layer is used for purifying surface runoff sewage, the top pipe orifice of the connecting pipeline can be lifted, and the top pipe orifice of the connecting pipeline is always higher than the water level on the upper purification layer;
the main water collecting pipe is communicated with the sewage inlet pipe below the main water collecting pipe through an overflow pipeline, a valve of a ball float valve is arranged in the overflow pipeline, a ball float of the ball float valve is arranged on the water surface in the lower purification layer, and when the water level in the lower purification layer is lower than a set threshold value, the valve in the overflow pipeline is opened, and otherwise, the valve is closed;
the water collecting pipe is uniformly laid at the bottom of the upper purifying layer, water inlet holes are formed in pipelines in the water collecting pipe, the water collecting pipe is communicated with an inlet of the total water collecting pipe, and an outlet of the total water collecting pipe extends to the outer side of the upper purifying layer;
and a water inlet channel is dug on the ground, and extends to the pit.
2. The co-purification system for domestic sewage and surface runoff according to claim 1, wherein: the lower purifying layer comprises a microorganism attaching filler layer, and an aeration pipeline is paved at the bottom of the microorganism attaching filler layer.
3. The co-purification system for domestic sewage and surface runoff according to claim 1, wherein: the upper purifying layer comprises a particle packing layer laid on the bottom plate, and wet emergent aquatic plants are planted on the particle packing layer.
4. The co-purification system for domestic sewage and surface runoff according to claim 1, wherein: still include intelligent control system and water level detector, water level detector is used for detecting the water level in the upper strata purifying layer, water level detector and be used for the drive connecting tube top mouth of pipe goes up and down's drive arrangement communication connection, water level detector be used for with the water level information transmission in the upper strata purifying layer extremely intelligent control system, intelligent control system can control the ascending and descending of connecting tube's top mouth of pipe, connecting tube's top mouth of pipe is higher than all the time the water level in the upper strata purifying layer.
5. The co-purification system for domestic sewage and surface runoff according to claim 1, wherein: the water level in the sewage pipe network or the preamble sewage regulating tank is higher than the top pipe orifice of the connecting pipeline.
6. The co-purification system for domestic sewage and surface runoff according to claim 1, wherein: the sewage inlet pipe is internally provided with a power pump which pumps the liquid in the sewage pipe network or the preface sewage regulating tank to the lower purification layer.
7. The co-purification system for domestic sewage and surface runoff according to claim 4, wherein: the water level detector is a float-type automatic water level detector.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111614058.1A CN114262006B (en) | 2021-12-27 | 2021-12-27 | Domestic sewage and surface runoff collaborative purification system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111614058.1A CN114262006B (en) | 2021-12-27 | 2021-12-27 | Domestic sewage and surface runoff collaborative purification system |
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| CN114262006A CN114262006A (en) | 2022-04-01 |
| CN114262006B true CN114262006B (en) | 2023-06-30 |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225823B (en) * | 2011-04-14 | 2013-01-23 | 江苏省环境科学研究院 | Ecological protection method for rural surface water source through recycle and effective reduction of nitrogen and phosphor |
| CN103739167B (en) * | 2014-01-10 | 2015-05-20 | 安徽锋亚环境技术有限公司 | Rain and sewage dual-purpose landscape type ecological purification system |
| CN106746351A (en) * | 2017-01-16 | 2017-05-31 | 深圳市碧园环保技术有限公司 | A kind of processing system for domestic sewage in rural areas |
| CN108439731A (en) * | 2018-06-06 | 2018-08-24 | 北京建筑大学 | A kind of integrated form integrated rural sewage-treatment plant and method |
| CN111115981A (en) * | 2020-01-20 | 2020-05-08 | 上源环工生态环境科技(苏州)有限公司 | Resource regeneration type constructed wetland system |
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