CN113666571A

CN113666571A - Combinable modular baffling bacteria-storage type farmland tail water nitrogen and phosphorus interception prefabricated ditch

Info

Publication number: CN113666571A
Application number: CN202110813990.0A
Authority: CN
Inventors: 向天勇
Original assignee: Jiaxing Vocational and Technical College
Current assignee: Jiaxing Vocational and Technical College
Priority date: 2021-07-19
Filing date: 2021-07-19
Publication date: 2021-11-19

Abstract

The invention discloses a combined modular baffling bacteria-storage type farmland tail water nitrogen and phosphorus interception prefabricated ditch which is arranged on a farmland and comprises a sand settling module, a first interception module and a second interception module, wherein the sand settling module is formed by splicing and is arranged on two sides of the first interception module; the first intercepting module comprises a gutter body, turbulence assemblies and backflow assemblies, the turbulence assemblies are sequentially arranged above the bottom surface of the gutter body and are arranged along the length direction of the gutter body, the backflow assemblies are arranged on one side of the gutter body and are higher than the bottom surface of the gutter body, and sewage treatment strains are arranged in the backflow assemblies; the second interception module comprises a drainage ditch body and a basket assembly, wherein a sewage treatment strain is arranged in the basket assembly. The invention adopts a mode of combining modular prefabricated ditches, and has the advantages of easy assembly, high-efficiency nitrogen and phosphorus removal, strong silt and rainstorm impact resistance, stable operation and no maintenance.

Description

Combinable modular baffling bacteria-storage type farmland tail water nitrogen and phosphorus interception prefabricated ditch

Technical Field

The invention relates to the technical field of farmland wastewater treatment, in particular to a combinable modular baffling bacteria-storage type farmland tail water nitrogen and phosphorus interception prefabricated ditch.

Background

Ecological interception (ecological interception) refers to the adoption of pollutant prevention and control measures combining building engineering technology, biotechnology, management technology and the like. The nitrogen and phosphorus removal module is arranged in the sediment capture well, is composed of materials such as porous minerals and the like, and is used for synchronously removing nitrogen and phosphorus in the ditch water.

A nitrogen and phosphorus interception technology for ecological ditches in farmlands is one of agricultural non-point source pollution treatment technologies. The general way is to dispose plant and other auxiliary measure on ditch bottom and bank protection, and the effective interception is implemented to nitrogen phosphorus that flows through ditch farmland tail water, and anti silt is anti rainstorm impact capacity weak, and the maintenance degree of difficulty is big, and the bank protection plant is mostly summer living plant, and ecological ditch of farmland annual decontamination effect is relatively poor. The bottom mud of the ecological ditch of the farmland is an important way for removing the phosphorus, but the adsorption capacity is limited, and the high-load phosphorus is difficult to be effectively intercepted and removed, so that the sewage discharge with the exceeding of the phosphorus in stages occurs. In addition, as no unified standard exists, the adopted technical means and specific technical parameters are greatly different in the construction process of the ecological interception ditches in various places, so that the ecological interception effect is difficult to effectively guarantee.

Disclosure of Invention

The invention mainly aims to provide a combinable modular baffling bacteria-storage type farmland tail water nitrogen and phosphorus interception prefabricated ditch, which can effectively solve the problems in the background technology by adopting a combinable modular prefabricated ditch mode.

In order to achieve the purpose, the invention adopts the technical scheme that: a combinable modular baffling bacteria-storing type farmland tail water nitrogen and phosphorus interception prefabricated ditch is arranged on a farmland and comprises a sand settling module, a first interception module and a second interception module which are formed in a splicing mode, wherein the sand settling module is arranged on two sides of the first interception module and is provided with a water inlet and a water outlet; the first intercepting module comprises a gutter body, turbulence assemblies and backflow assemblies, the turbulence assemblies are sequentially arranged above the bottom surface of the gutter body and are arranged along the length direction of the gutter body, a gap is formed between every two turbulence assemblies, the backflow assemblies are arranged on one side of the gutter body and are higher than the bottom surface of the gutter body, and sewage treatment strains are stored in the backflow assemblies; the second interception module includes the drainage ditch body and hand-basket subassembly, and is a plurality of hand-basket subassembly detachable sets up in the drainage ditch internally, the hand-basket subassembly distributes along the length direction of the drainage ditch body in proper order, be provided with the sewage treatment bacterial in the hand-basket subassembly.

In several embodiments, the gutter body includes a water guide bottom plate and two water guide side plates, two of the water guide side plates are disposed on two sides of the water guide bottom plate, the turbulence assembly is disposed on the water guide bottom plate, and the backflow assembly is disposed on the water guide side plate on one side.

In several embodiments, the turbulent flow component comprises two water baffles which are connected end to end, the included angle between the two water baffles is less than 180 degrees, and the included angle between the two water baffles faces the flowing direction of water flow.

In several embodiments, the turbulence assembly further comprises ecological grass strands, which consist of several carbon ecological grass strands, but not limited to carbon fiber material, which are suspended on the water deflector side.

In several embodiments, the backflow component comprises a backflow groove arranged in the water diversion side plate, the backflow groove is obliquely arranged towards one side of the water diversion bottom plate, and the backflow groove does not penetrate through the water diversion side plate.

In several embodiments, an insertion pipe is arranged in the backflow groove, the insertion pipe extends to the position above the water diversion bottom plate, and the sewage treatment strain is arranged in the insertion pipe.

In several embodiments, the sand-settling module comprises an inflow sand-settling component and an outflow sand-settling component, the inflow sand-settling component is arranged at one end of a water flow inlet of the first intercepting module, the outflow sand-settling component is arranged at one end of a water flow outlet of the first intercepting module, and the outflow sand-settling component is communicated with the second intercepting module.

In several embodiments, the sand-settling assembly includes a sand-settling bottom plate and four sand-settling side plates respectively disposed at four sides of the sand-settling bottom plate, the four sand-settling side plates are all provided with first grooves, one of the first grooves on the sand-settling side plate is communicated with an inlet end of the gutter body, the other first groove on the sand-settling side plate is provided with a filtering assembly, the first groove opposite to the filtering assembly is provided with an extension rail, and the extension rail is disposed above the gutter body and extends to the outer side of the gutter body.

In several embodiments, the water inlet of the outlet sand-settling component is communicated with the gutter body, and the water outlet of the outlet sand-settling component is communicated with the gutter body.

In several embodiments, a plurality of stops are disposed within the drain, and the basket assembly is interposed between adjacent stops.

Compared with the prior art, the invention has the following beneficial effects:

the invention adopts a mode of combining modular prefabricated ditches, utilizes modules such as a filtering desilting pool, a baffling bacteria-storing ecological grass nitrification dephosphorization ditch, a nitrification basket deep denitrification dephosphorization ditch (one pool with two ditches) and the like to realize high-efficiency deep dephosphorization of farmland tail water, and has the advantages of easy assembly, high-efficiency denitrification dephosphorization, strong silt-resistant and storm rain-resistant impact capacity, stable operation and no maintenance.

The parallel baffling bacteria-storing ecological grass nitrification and dephosphorization ditch (namely a first interception module, the same below) and the nitrification basket deep denitrification and dephosphorization ditch (a second interception module, the same below) are arranged on one side of the drainage field ridge, a grit chamber is arranged on each land, the tail water of the field is collected, the grit modules are communicated through the baffling bacteria-storing ecological grass nitrification and dephosphorization ditch (the length of a single ditch is 6m), the length of the baffling bacteria-storing ecological grass nitrification and dephosphorization ditch can be freely cut according to the length of the field ridge, the adaptability is strong, meanwhile, a green belt can be built in the open space between the baffling bacteria-storing ecological grass nitrification and dephosphorization ditch and the nitrification basket deep denitrification and dephosphorization ditch, the whole is more standard and uniform, different specifications are produced according to requirements, and the greening belt is more beautiful and greener.

The invention adopts the developed technology of 'herringbone bottom and honeycomb wall' to intercept nitrogen and phosphorus. The turbulent flow component forms a herringbone stop block, herringbone small grooves are formed among the turbulent flow components, meanwhile, carbon fiber ecological grass is fixed on one side of the turbulent flow component and extends into the small grooves, the flow speed of wastewater is reduced due to the turbulent flow component, nitrification and phosphorus precipitation occur under the action of a biomembrane enriched on the surface of the carbon fiber ecological grass, the wastewater flows into the side wall backflow groove and then flows out of the groove to exchange part of water with the groove through the backflow component in the side wall, and the upper edge of the groove is flush with the upper end face of the turbulent flow component due to the fact that one end of the groove body is closed, an aerobic-anaerobic gradient is formed in the water body in the hole, and nitrification-denitrification bacterial species can be conveniently kept.

(1) According to the invention, through the second interception module, the wastewater treated by the first interception module enters the second interception module, and through the plurality of nitrification-denitrification basket lifting assemblies, residual nitrogen can be further removed, so that the deep denitrification of the tail water is realized.

Drawings

FIG. 1 is a schematic plan view of a nitrogen and phosphorus intercepting prefabricated ditch of combinable modular baffled bacteria-storage type farmland tail water according to an embodiment of the invention;

FIG. 2 is a partial perspective view of a combinable modular baffling bacteria-storage type farmland tail water nitrogen and phosphorus interception prefabricated ditch according to an embodiment of the invention;

FIG. 3 is a schematic diagram of the architecture at a first intercept module according to an embodiment of the invention;

FIG. 4 is a schematic cross-sectional structure view of a water diversion side plate according to an embodiment of the invention;

fig. 5 is a schematic internal structure diagram of a second interception module according to an embodiment 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 embodiments of the present invention will be described in detail below, and the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention.

Therefore, the detailed description of the embodiments of the present invention provided below is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention, and all other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without inventive efforts shall fall within the scope of the present invention.

The terminology used herein is for the purpose of describing embodiments only and is not intended to be limiting and/or limiting of the invention.

For example, expressions such as "in a certain direction", "along a certain direction", "parallel", "orthogonal", "center", "relative", "front-back-left-right" and the like indicate relative or absolute arrangements, and indicate not only such arrangements in a strict sense but also a state of being relatively displaced with a tolerance or an angle or a distance to the extent that the same function can be obtained.

The combined modularized baffling bacteria-storage type farmland tail water nitrogen and phosphorus interception prefabricated ditch provided in the embodiment is arranged on a farmland 1000, wastewater introduced into the farmland 1000 is treated, and mainly comprises a sand deposition module 100, a first interception module 200 and a second interception module 300 which are formed in a splicing mode, wherein the sand deposition module 100, the first interception module 200 and the second interception module 300 are prefabricated and formed according to certain length sizes directly according to site requirements on site, and then are conveyed to a specified treatment area to be assembled, cement mortar is adopted for fixing or a flexible plastic gasket is adopted for connecting the three modules, the sand deposition module 100 is positioned on two sides of the first interception module 200, the sand deposition module is used for filtering and depositing sand, the first interception module and the second interception module are used for realizing nitrogen and phosphorus removal treatment of the wastewater, a green belt 2000 is built on the open lands of the first interception module and the second interception module, more beautiful and green.

In this embodiment, the sand settling module 100 is disposed at two sides of the first intercepting module 200, and the sand settling module 100 is provided with a water inlet 101 and a water outlet 102 to realize butt-joint water inlet and water outlet.

Specifically, the sand sediment module 100 includes an income water sand sediment subassembly 110 and an play water sand sediment subassembly 120, the setting of income water sand sediment subassembly 110 is in the rivers entry one end of first interception module 200, the setting of play water sand sediment subassembly is in the rivers export one end of first interception module 200, it is linked together with second interception module 300 to go out water sand sediment subassembly, and is unusual, when needs use longer first interception module, can be connected through the income water sand sediment subassembly between a plurality of first interception modules.

Wherein, the water inlet desilting component 110 comprises a desilting bottom plate 111 and four desilting side plates 112 respectively arranged at four sides of the desilting bottom plate 111, the four desilting side plates 112 are all provided with first grooves 113, the first groove 113 on one desilting side plate 112 is communicated with one end of the inlet of the gutter body 210, the first groove 113 on the other desilting side plate 112 is provided with a filtering component 114, the first groove 113 opposite to the filtering component 114 is provided with an extension track 115, the extension track 115 is arranged above the gutter body 310 and extends to the outer side of the gutter body 310, the first groove provided with the filtering component forms a water inlet, the first groove communicated with the gutter body 210 forms a water outlet, the water inlet desilting component and the gutter body are connected by adopting cement mortar fixing or flexible plastic gaskets, the filtering component adopts a stainless steel filtering net structure, use and demolish the change in the convenient recess that inserts, and, the degree of depth that extends the first recess that track 115 is located is less than the degree of depth that is linked together with leading water communication, uses as the flood discharge mouth from this, and when the water yield is great, the surface of water surpasses and extends the track, is discharged the river course by it directly and carries out the flood discharge.

The water inlet 101 of the outlet sand-settling component is communicated with the gutter body 210, the water outlet 102 of the outlet sand-settling component is communicated with the gutter body 310, the outlet sand-settling component is also of a box-packed structure similar to the inlet sand-settling component, corresponding grooves are arranged in a matched mode to serve as the water inlet and the water outlet, and the outlet sand-settling component and the gutter body are fixed through cement mortar or connected through flexible plastic gaskets.

The first intercepting module 200 includes a gutter body 210, a turbulent flow component 220 and a backflow component 230, the gutter body 210 includes a water diversion bottom plate 211 and two water diversion side plates 212, and the two water diversion side plates 212 are disposed on two sides of the water diversion bottom plate 211.

The plurality of turbulence assemblies 220 are sequentially arranged above the bottom surface of the gutter body 210, the turbulence assemblies 220 are arranged along the length direction of the gutter body 210, a gap exists between every two turbulence assemblies 220, the turbulence assemblies 220 are arranged on the water guide bottom plate 211, each turbulence assembly 220 comprises a water baffle 221 and an ecological grass bunch 222, the two water baffles 221 are connected end to form a herringbone structure, the included angle between the two water baffles 221 is smaller than 180 degrees and generally adopts 90 degrees, the included angle between the two water baffles 221 faces the flow direction of water flow, meanwhile, the ecological grass bunch 222 is composed of a plurality of carbon fibers, but not limited to carbon fiber materials, the ecological grass bunch 222 is hung and laid on one side of the water baffle 221, namely, the herringbone groove is towards the flow direction of water flow, and the ecological grass bunch is also arranged at one side of the formed groove, the ecological grass bunch is carbon fiber ecological grass which can be purchased directly from the market, so as to achieve the biological membrane purification effect.

Here, a plurality of backward flow components 230 set up in diversion ditch body 210 one side and be higher than the bottom surface of diversion ditch body 210, be provided with sewage treatment bacterial species in the backward flow component 230, if nitrify/denitrify bacterial species, backward flow component 230 sets up on the diversion curb plate 212 of one side, and is concrete, backward flow component 230 includes a backwash trough 231 of setting in diversion curb plate 212, backwash trough 231 sets up towards diversion bottom plate 211 one side slope, backwash trough 231 does not run through diversion curb plate 212, and is provided with an intubate 232 in backwash trough 231, intubate 232 extends to diversion bottom plate 211 top, sewage treatment bacterial species deposits and sets up in intubate 232, intubate 232 towards diversion bottom plate one side slope about 10 can.

Here, the second intercepting module 300 includes a gutter body 310 and a basket assembly 320, the basket assembly 320 is a basket grid structure, can be arranged by hand and can be purchased directly from the market, a plurality of the basket assemblies 320 can be detachably arranged in the drainage ditch body 310, the basket assembly 320 is distributed along the length direction of the drainage ditch body 310 in sequence, carriers such as sewage treatment strains, biochemical balls, active carbon and the like are arranged in the basket assembly 320, simultaneously be provided with a plurality of dog 311 in the gutter body 310, the setting is inserted between adjacent dog 311 to the hand-basket subassembly 320, and the structure of isosceles trapezoid shape is designed into here to the gutter body cross-section, and narrow down is wide from top to bottom, improves the bacterial treatment effect, and the cement dog sets up on two sides of the gutter body, is located four bight positions of the both sides of hand-basket subassembly respectively, plays the effect of fixed hand-basket subassembly.

Therefore, the farmland wastewater is firstly led to the water-entering sand-settling component, is primarily filtered by the filtering component, and is discharged with scum, in the process of settling sand, the wastewater is led to the first interception module for nitrogen and phosphorus treatment, then is led to the water-discharging sand-settling component for settling sand, and is led to the second interception module for secondary nitrogen and phosphorus treatment, and finally the obtained clear water is discharged into a river channel.

The present invention describes preferred embodiments, including the best mode known to the inventors for carrying out the invention. Of course, variations of these preferred embodiments will be apparent to those skilled in the art. The inventors envision that the variations may be used as appropriate by those skilled in the art and the inventors intend for the invention to be practiced otherwise than as specifically described herein. Accordingly, this invention includes all modifications encompassed within the spirit and scope of the invention as defined by the claims. Moreover, any and all possible variations of the above-described elements are encompassed by the present invention unless otherwise indicated herein or otherwise clearly contradicted by context.

Claims

1. A combinable modular baffling bacteria-storage type farmland tail water nitrogen and phosphorus interception prefabricated ditch is arranged on a farmland and is characterized in that the prefabricated ditch comprises a splicing and molding sand settling module, a first interception module and a second interception module,

the sand settling module is arranged on two sides of the first intercepting module and is provided with a water inlet and a water outlet;

the first intercepting module comprises a gutter body, turbulence assemblies and backflow assemblies, the turbulence assemblies are sequentially arranged above the bottom surface of the gutter body and are arranged along the length direction of the gutter body, a gap is formed between every two turbulence assemblies, the backflow assemblies are arranged on one side of the gutter body and are higher than the bottom surface of the gutter body, and sewage treatment strains are arranged in the backflow assemblies;

the second interception module includes the drainage ditch body and hand-basket subassembly, and is a plurality of hand-basket subassembly detachable sets up in the drainage ditch internally, the hand-basket subassembly distributes along the length direction of the drainage ditch body in proper order, be provided with the sewage treatment bacterial in the hand-basket subassembly.

2. The combinable modular baffling bacteria-storage type farmland tail water nitrogen-phosphorus interception prefabricated ditch is characterized in that the diversion ditch body comprises a diversion bottom plate and two diversion side plates, the two diversion side plates are arranged on two sides of the diversion bottom plate, the turbulence assembly is arranged on the diversion bottom plate, and the backflow assembly is arranged on the diversion side plate on one side.

3. The combinable modular baffling bacteria-retaining type farmland tail water nitrogen and phosphorus interception prefabricated ditch as claimed in claim 2, characterized in that the turbulence component comprises water baffles, two of which are connected end to end, the included angle between the two water baffles is less than 180 degrees, and the included angle between the two water baffles faces the flow direction of water flow.

4. The combinable modular baffled bacteria-retaining type farmland tail water nitrogen and phosphorus interception prefabricated ditch as claimed in claim 3, wherein the turbulence assembly further comprises an ecological grass bunch, and the ecological grass bunch is hung on one side of the water baffle.

5. The combinable modular baffling bacteria-storage type farmland tail water nitrogen-phosphorus interception prefabricated ditch as claimed in claim 2, wherein the backflow assembly comprises a backflow groove arranged in the water diversion side plate, the backflow groove is obliquely arranged towards one side of the water diversion bottom plate, and the backflow groove does not penetrate through the water diversion side plate.

6. The combinable modular baffling bacteria-storage type farmland tail water nitrogen-phosphorus interception prefabricated ditch is characterized in that an insertion pipe is arranged in the backflow tank, the insertion pipe extends above the water diversion bottom plate, and sewage treatment strains are stored in the insertion pipe.

7. The combinable modular baffling bacteria-storage type farmland tail water nitrogen-phosphorus interception prefabricated ditch is characterized in that the sand settling module comprises an inflow sand settling assembly and an outflow sand settling assembly, the inflow sand settling assembly is arranged at one end of a water flow inlet of the first interception module, the outflow sand settling assembly is arranged at one end of a water flow outlet of the first interception module, and the outflow sand settling assembly is communicated with the second interception module.

8. The combinable modular baffling bacteria-storage type farmland tail water nitrogen and phosphorus interception prefabricated ditch is characterized in that the water-entering sand-settling component comprises a sand-settling bottom plate and four sand-settling side plates respectively arranged on four sides of the sand-settling bottom plate, first grooves are formed in the four sand-settling side plates, the first groove in one sand-settling side plate is communicated with one inlet end of a water-diversion ditch body, a filtering component is arranged on the first groove in the other sand-settling side plate, an extension rail is arranged on the first groove opposite to the filtering component, and the extension rail is arranged above the water-drainage ditch body and extends to the outer side of the water-drainage ditch body.

9. The combinable modular baffling bacteria-storage type farmland tail water nitrogen and phosphorus interception prefabricated ditch as claimed in claim 8, wherein a water inlet of the water outlet sand-settling assembly is communicated with the water diversion ditch body, and a water outlet of the water outlet sand-settling assembly is communicated with the water drainage ditch body.

10. The combinable modular baffling bacteria-retaining farmland tail water nitrogen and phosphorus interception prefabricated ditch as claimed in any one of claims 1 to 9, wherein a plurality of stop blocks are arranged in the drainage ditch body, one or more of sewage treatment strains, biochemical balls and activated carbon are arranged in the basket assembly, and the basket assembly is inserted between the adjacent stop blocks.