CN211712874U - A cut dirty centralized processing system for river regulation - Google Patents
A cut dirty centralized processing system for river regulation Download PDFInfo
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- CN211712874U CN211712874U CN201922035179.5U CN201922035179U CN211712874U CN 211712874 U CN211712874 U CN 211712874U CN 201922035179 U CN201922035179 U CN 201922035179U CN 211712874 U CN211712874 U CN 211712874U
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Abstract
The utility model discloses a sewage interception centralized processing system for river treatment, which comprises a sewage interception pipe network, an integrated strengthening treatment component and an ecological restoration component, wherein after the non-point source pollution is converted into controllable point source pollution through the sewage interception pipe network, the integrated strengthening treatment component is used for carrying out centralized high-efficiency strengthening treatment to remove a large amount of sludge sediment, ammonia nitrogen, chemical oxygen demand, total phosphorus, biochemical oxygen demand and the like in sewage, the sewage flows through an artificial ecological floating island and artificial waterweeds through the primary sedimentation and filtration of a diversion weir in the ecological restoration component, the sewage is subjected to secondary biodegradation by utilizing developed root systems of aquatic plants and biomembrane carriers to realize sewage purification, the sewage interception centralized processing is adopted in the treatment system, the sewage is directly discharged and controlled thoroughly and has good scale effect, the biological filter tank process and the ecological restoration technology are combined, the diffusion of pollutants is further effectively controlled through the ecological effect on the basis of the high-efficiency strengthening treatment, the ecological effect and the environmental effect are good.
Description
Technical Field
The utility model relates to a sewage treatment system especially relates to a cut dirty centralized processing system for river course is administered, belongs to river course water treatment technical field.
Background
The water ecological environment is always an important component of the whole ecological environment, and nineteen reports indicate that' the modernization to be built is the modernization of harmonious symbiosis of people and nature, more material wealth and mental wealth are created to meet the increasing beautiful life needs of people, and more high-quality ecological products are provided to meet the increasing beautiful ecological environment needs of people. Therefore, responding to the call of the vast masses of people, improving urban and rural water environment, and creating beautiful China and water country becomes one of the important times theme.
However, with the development of social economy and the promotion of urban and rural industrialization, most cities and towns in the southeast coastal region have the black and odorous phenomena that medium and small river channels and small watersheds are difficult to be cured radically. Therefore, the multi-site water conservancy and utilities department hopes to thoroughly solve the problem of black and odorous river channels through common water conservancy projects such as river channel dredging and ecological bank protection and municipal works such as sewage interception receiving pipes, but the actual effect is not ideal. Although river channel dredging and ecological bank protection can solve the problems of black and odorous river channels and silting in a short time, the phenomenon of black and odorous river channel returning is still not few after a long time. The reason is that only the transformation of 'hardware facilities' of bank protection and sludge is focused in the treatment process of the black and odorous river channel water body, and the recovery of 'software facilities' of the integral ecological function of the river channel water body is ignored. The self reoxygenation capacity and the self-purification capacity of the river can be greatly improved through the water ecological restoration project, and the problem of black and odorous river is solved. The treatment experience of a plurality of river channel projects has already shown that sewage interception is the first step of river channel treatment, but the sewage interception difficulty is the greatest difficulty in the river channel treatment process. How to solve the engineering situation that the onshore sewage interception is difficult in the prior art so as to realize the problem that the interception and treatment in the river channel are required to be solved at present.
In addition, this application project research team has carried out a series of investigations to the black and odorous cause of river course and pollution sources, discovers that the outlet on river course both sides is main point source pollution, because the formation in black and odorous river course often is in the urban area, and the urban area is cut dirty and is received the pipe engineering and often be difficult to realize, perhaps can not complete completely, often has grey black domestic sewage outflow in the outlet, and this is also the leading cause that quality of water worsens. The pollution is caused by accumulation of pollution sources at a drain outlet, precipitation and fish culture deposition, release of pollutants in bottom mud to a water body and the like, but most of the pollution is caused by a water outlet, so that the problem that the river channel is polluted by the sewage outlet and the problem that the river channel is difficult to intercept on the bank are the same problems which need to be solved currently.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a cut dirty centralized processing system for river course is administered.
The technical scheme of the utility model is that:
the utility model discloses a cut dirty centralized processing system for river course is administered, this processing system includes
The sewage intercepting pipe network is arranged at the side of the current river mouth line of the river channel facing the land area direction, the water inlet of the sewage intercepting pipe network is communicated with each sewage discharging port along the river, and sewage discharged from each sewage discharging port along the river can be contained in the sewage intercepting pipe network;
the integrated strengthening treatment component is positioned and embedded under the ground at one side of the land direction along the front line of the first-stage revetment of the sewage centralized treatment area, a sewage inlet of the integrated strengthening treatment component is communicated with a water outlet of the sewage intercepting pipe network, and a water outlet of the integrated strengthening treatment component is introduced into a river channel; the integrated strengthening treatment component comprises a hydrolysis acidification tank, a contact oxidation tank, a secondary sedimentation tank and a disinfection tank which are sequentially arranged and communicated along the sewage inlet direction; and
ecological remediation subassembly, this ecological remediation subassembly include and are located near a plurality of water conservancy diversion weirs of integral type intensive treatment subassembly outlet in the river course to sewage body flow direction is the benchmark, the place ahead water surface come-up of water conservancy diversion weir is equipped with a plurality of artificial ecological chinampa, and fixes a position on the riverbed in water conservancy diversion weir place ahead river course and has laid artificial pasture and water.
The further technical scheme is as follows:
the sewage intercepting pipe network consists of mutually communicated sewage intercepting pipes, and the diameters of the sewage intercepting pipes are not more than 800 mm; each sewage intercepting pipe comprises an inner pipe for collecting and conveying sewage and a sleeve pipe sleeved on the inner pipe in a coaxial positioning mode, the using state is used as the reference, a plurality of hoisting hooks for hoisting are fixedly arranged on the upper surface of the outer wall of the sleeve pipe at intervals along the axial direction, and a plurality of positioning supports for fixing the sleeve pipe on an installation substrate are fixedly arranged on the lower surface of the outer wall of the sleeve pipe at intervals along the axial direction.
The further technical scheme is as follows:
the hydrolysis acidification tank, the contact oxidation tank, the secondary sedimentation tank and the disinfection tank all comprise tank bodies which are communicated through a water passing port positioned at the middle upper part of the common side wall, wherein the bottoms of the hydrolysis acidification tank and the contact oxidation tank are respectively provided with a microporous aeration device capable of aerating the water body in a positioning manner, and a plurality of rows of elastic fillers are distributed in the two tank bodies above the microporous aeration device in a positioning manner along the vertical direction; the bottom of the secondary sedimentation tank is of a conical structure, an included angle between a bus of the conical structure and an axis is not more than 40 degrees, and an annular water collecting device is positioned in the secondary sedimentation tank; the top of the disinfection pond is positioned and provided with a reagent feeding device for feeding disinfectants.
A sludge pump for pumping sludge at the bottom of the tank is positioned in the tank body of the hydrolysis acidification tank or the contact oxidation tank, and a discharge port of the sludge pump is communicated with a feed port of a sludge drying bed; at least one sewage pump for extracting the treated sewage is positioned in the disinfection tank, and a water outlet of the sewage pump is communicated with a river channel through a water outlet pipe.
The further technical scheme is as follows:
a plurality of the water conservancy diversion weir is laid in proper order on the river course domatic that one-level revetment front edge line is located waters direction one side, and every the water conservancy diversion weir comprises by the water conservancy diversion canal and the filter stone filler of locating in the water conservancy diversion canal, and the longitudinal section of this water conservancy diversion weir is the trapezium structure.
The further technical scheme is as follows:
the artificial ecological floating island comprises an island body which is positioned and floated on the surface of a water body by adopting a weight method and is positioned near the center line of a river channel, and 15-20 pieces/m are arranged on the island body2The aquatic plants with developed root systems are planted at intervals, and the bottommost end of the root systems of the aquatic plants is lower than the lowest water level of the river channel.
The further technical scheme is as follows:
the artificial aquatic weed comprises a plurality of artificial aquatic weed units, each artificial aquatic weed unit comprises a tether, one end of the tether is fixedly provided with an artificial aquatic weed body, and the other end of the tether is fixedly arranged in a submerged block; the artificial float grass body comprises a strip-shaped sinking weight which is fixedly connected with one end of the tether, a plurality of fibrous biomembrane carriers which are vertically arranged in parallel are fixedly arranged on the sinking weight, and a float is formed at the top of each biomembrane carrier.
A plurality of the artificial aquatic weed units are arranged according to 9-12 roots/m2The arrangement density of the natural substrate is distributed on the riverway and riverbed of the natural substrate; or the submerged blocks of a plurality of the artificial aquatic weed units are 9-12 pieces/m2The arrangement density is embedded in the geocell at intervals, and a plurality of anchor rods which can be inserted into the riverway riverbed of the soil flexible substrate are fixedly arranged at intervals of other geocells backfilled with planting soil.
The utility model has the beneficial technical effects that: the utility model discloses processing system includes the sewage interception pipe network, integral type intensive treatment subassembly and ecological remediation subassembly, it turns into controllable point source pollution back through intercepting the non-point source pollution of dirty pipe network dispersion, through integral type intensive treatment subassembly carry on concentrate high-efficient and intensive processing thereby the high-efficient in the sewage of removing a large amount of sludge deposition, ammonia nitrogen, chemical oxygen demand, total phosphorus and biochemical oxygen demand etc. again, then after the water conservancy diversion weir in the ecological remediation subassembly carries out preliminary sedimentation and filters, flow through artificial ecological chinampa and artificial pasture, utilize the flourishing root system of aquatic plant and biomembrane carrier to carry out secondary biodegradation to sewage, realize sewage purification; the treatment system has the advantages of centralized treatment of sewage interception, more thorough control of sewage direct discharge and good scale effect of centralized treatment, and the combination of the biofilter process and the ecological restoration technology, further effective control of pollutant diffusion at the discharge port through the ecological effect on the basis of ensuring high-efficiency strengthening treatment, and good ecological effect and environmental effect.
Drawings
FIG. 1 is a schematic structural diagram of a sewage interception centralized treatment system of the present invention;
FIG. 2 is a schematic structural view of the sewage intercepting pipe of the present invention;
FIG. 3 is a schematic top view of the integrated reinforcement processing assembly of the present invention;
FIG. 4 is a schematic structural view taken along section A-A in FIG. 3;
FIG. 5 is a schematic structural view of the section B-B in FIG. 3;
fig. 6 is a schematic view of the artificial ecological floating island of the present invention;
fig. 7 is a schematic diagram of a downward structure of the island body of the artificial ecological floating island of the present invention;
FIG. 8 is a schematic structural view of the artificial float grass unit of the present invention;
FIG. 9 is a schematic structural view of one of the arrangement modes of the artificial float grass units of the present invention;
FIG. 10 is a schematic structural view of a second arrangement of artificial aquatic weed units according to the present invention;
wherein:
1, a sewage intercepting pipe network;
101a sewage interception pipe; 101a inner tube; 101b a casing; 102 hoisting hooks; 103 positioning the bracket;
2, an integrated strengthening treatment component;
201 hydrolysis acidification pool; 202 contacting an oxidation pond; 203 secondary sedimentation tank; 204 a disinfection tank; 205 micro-pore aeration device; 206 elastic filler; 207 an annular water collecting device; 208 a sludge pump; 209 a sewage pump; 210 an inspection window; 211 supporting frames;
3, ecological restoration components;
301 a flow guiding weir;
302 artificial ecological floating island; 302a island body; 302b aquatic plants; 302c stainless steel rope; 302d ballast stone; 302e plant planting holes;
303 artificial float grass;
303a artificial float grass unit;
303a-1 tether;
303a-2 artificial float grass body; 303a-21 sinker; 303a-22 biofilm carrier; 303a-23 floats;
303a-3 a water sinking mass;
303b geocell;
303c backfilling;
303d anchor rod;
5, along the front line of the first-level revetment;
6, the center line of the river channel;
7 lowest water line;
8 a conventional water line;
9 highest water level line;
the dashed arrows in the figure point to the water and land areas, and the solid arrows indicate the sewage flow direction.
Detailed Description
In order to make the technical means of the present invention clearer and to implement the present invention according to the content of the specification, the following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples, which are used for illustrating the present invention and are not intended to limit the scope of the present invention.
The sewage interception centralized treatment system for river regulation mainly comprises a sewage interception pipe network 1, an integrated strengthening treatment component 2 and an ecological restoration component 3.
The sewage intercepting pipe network 1 is arranged at the side of the current river mouth line of the river channel facing the land area direction, and is usually buried under the ground or positioned at the bottom of the river channel. The water inlet of the sewage interception pipe network is communicated with each sewage discharge outlet of the riverside and can contain sewage discharged from each sewage discharge outlet of the riverside into the sewage interception pipe network. What this cut dirty pipe network adopted is that cut dirty processing technology, and it is through cutting dirty mode of concentrating the improvement, and the sewage of following the river drain all brings this cut dirty pipe network in to carry sewage to low reaches through this cut dirty pipe network and select suitable region to carry out centralized processing, perhaps directly send sewage into municipal sewage pipe network through the pump station, the former that adopts in this application embodiment carries out the mode of centralized processing.
The sewage intercepting pipe network 1 is composed of the sewage intercepting pipes 101 which are communicated with each other, and each sewage intercepting pipe 101 comprises an inner pipe 101a for collecting and conveying sewage and a sleeve 101b which is coaxially positioned and sleeved on the inner pipe, and the reference figure of the patent refers to fig. 2. When the inner pipe of the sewage intercepting pipe is designed, a pollution source of sewage entering the inner pipe and the collected water amount of the sewage discharging openings along the river need to be considered, and the sewage intercepting pipe network (especially the inner pipe of the sewage intercepting pipe) in the specific embodiment is suitable for the condition that the pipe diameter of each sewage discharging opening along the river is not more than 800 mm. When the inner pipe is designed specifically, the inner pipe is a PVC pipe with the diameter not more than 800mm, so that the PVC pipe is convenient to match with each sewage discharge outlet along a river, and the flow velocity of water in the inner pipe is 5-5.5m/s, most preferably 5 m/s; the water fullness of the inner pipe is 0.7-0.8, and the optimal water fullness is 0.7; the hourly coefficient of variation is 6-6.5, most preferably 6.
In the laying process of the sewage intercepting pipe network, the safety problem of the sewage intercepting pipe network along a river, the river water seepage problem, the pipeline protection measures in the flood season, the phenomenon of easy hollowing and floating of the pipeline and the like need to be considered, so that a conventional pipeline is used as the inner pipe 101a, and the sleeve 101b is coaxially positioned and sleeved outside the inner pipe. A plurality of hoisting hooks 102 for hoisting are fixedly arranged on the upper surface of the outer wall of the casing 101b at intervals along the axial direction by taking the using state as a reference, so that the pipeline can be conveniently placed at a corresponding position in a hoisting manner; a plurality of positioning brackets 103 for fixing the sleeve on the installation substrate are fixedly arranged on the lower surface of the outer wall of the sleeve 101b at intervals along the axial direction. See fig. 2. The installation matrix is different according to different installation positions of the sewage intercepting pipe network, corresponding positioning supports can be selected according to actual conditions, supports with anchor rods can be adopted when the installation matrix is buried underground or installed at the bottom of a river channel with a soft substrate, supports with steel rods can be adopted when the installation matrix is installed at the bottom of a river channel with a hard substrate, and the like. The sewage intercepting pipe network is fixed at the bottom of the river channel or under the ground in a mode of adding the sleeve outside the inner pipe, so that flood and ship running in the river channel are not influenced when the sewage intercepting pipe network is at the bottom of the river channel, the water level does not need to be reduced during construction, and water carrying operation can be carried out; the floor space is not occupied under the ground; and after the technical scheme of the sewage intercepting pipe network intercepts the sewage from the pollution source, the direct sewage discharge phenomenon is controlled more thoroughly, and the scale benefit of centralized treatment is good.
The device for centralized sewage treatment in the application comprises two parts, namely an integrated strengthening treatment component 2 and an ecological restoration component 3, and adopts the combination of a biological filter process technology and an ecological restoration technology, so that an A/O method and an A/O method are optimized2Based on various traditional sewage treatment processes and methods such as the O method, the SBR method and the like, the device which is successfully designed through practice and application of treating the river channel for a long time and has a brand new concept is integrated, functionalized, motor integrated, automated and ecological.
Wherein the integrated strengthening treatment component 2 is positioned and embedded under the ground at one side of the land along the front line 5 of the first-level revetment of the sewage centralized treatment area, the sewage inlet of the integrated strengthening treatment component is communicated with the water outlet of the sewage intercepting pipe network 1, and the water outlet of the integrated strengthening treatment component is communicated with the river channel. The integrated strengthening treatment assembly 2 comprises a hydrolysis acidification tank 201, a contact oxidation tank 202, a secondary sedimentation tank 203 and a disinfection tank 204 which are sequentially arranged and communicated along the sewage inlet direction, and refer to fig. 3 to 5.
Hydrolysis-acidification pool, contact oxidation pond, two heavy ponds and disinfection pond all include the cell body that crosses the mouth of a river intercommunication that upper portion was located common lateral wall, and the lateral wall upper portion in hydrolysis-acidification pool is seted up to the sewage water inlet of integral type intensive treatment subassembly, and the lateral wall upper portion in disinfection pond is seted up to the outlet of integral type intensive treatment subassembly. The bottom of the hydrolysis acidification tank and the bottom of the contact oxidation tank are respectively provided with a microporous aeration device 205 which can be used for aerating the water body, referring to fig. 3, the microporous aeration device comprises an air branch pipe for conveying air and a microporous aerator which is positioned on the air branch pipe and communicated with the air branch pipe, the air or oxygen is distributed to the microporous aerator positioned on the air branch pipe through the air branch pipe, the air or oxygen is aerated into the water body through the microporous aerator, and the effect of disturbing the water body can be achieved while the oxygen content of the water body is improved.
The top department that lies in micropore aeration equipment in the cell body of hydrolytic acidification pond and contact oxidation pond all has laid a plurality of rows of elastic packing 206 along vertical direction location, this a plurality of rows of elastic packing locate in the cell body through the filler support location, elastic packing is to press the knot to change into the big plastic ring of double circle with the plastics disk, press hydroformylation fibre or dacron silk on the ring of ring, make tow evenly distributed, the inner circle is the snowflake form plastics branch, can hang the membrane and can effectively cut the bubble again, improve the transfer rate and the utilization ratio of oxygen, make aqueous vapor biomembrane obtain abundant exchange, thereby make the organic matter of aquatic obtain high-efficient processing. The bottom of the secondary sedimentation tank is of a conical structure, an included angle between a bus and an axis of the conical structure is not more than 40 degrees, sludge at the bottom of the secondary sedimentation tank is convenient to discharge, and an annular water collecting device 207 is positioned in the secondary sedimentation tank; the top of the disinfection pond is positioned with a reagent feeding device for feeding disinfectants. A sludge pump 208 for pumping sludge at the bottom of the tank is positioned in the tank body of the hydrolysis acidification tank or the contact oxidation tank, and a discharge port of the sludge pump is communicated with a feed port of a sludge drying bed; at least one sewage pump 209 for extracting the treated sewage is positioned in the disinfection tank, the water outlet of the sewage pump is communicated with the river channel through a water outlet pipe, two sewage pumps are arranged in the embodiment, the two sewage pumps can discharge water into the river channel in a mode of alternately operating every week, and the start and stop of the sewage pump are automatically controlled according to the pump-on water level and the pump-off water level. In addition, an inspection window 210 for manual inspection is provided on the top cover of each treatment tank in the integrated enhanced treatment assembly 2. When the integrated reinforcement processing member is buried, a support frame 211 for supporting the integrated reinforcement processing member may be buried at the bottom of the land along the line immediately before the first-stage revetment.
This processing subassembly is reinforceed to integral type is through cutting dirty processing technique back, all concentrates sewage to an area and become controllable point source sewage treatment by scattered non-point source pollution, promptly can effectual processing pollute sewage through complete set of device. The assembly takes biological filtration as a main function, four-chamber cavities of a hydrolysis acidification tank, a contact oxidation tank, a secondary sedimentation tank and a disinfection tank are designed, the assembly is compatible and integrated with various treatment processes such as a physical and chemical method, a biochemical method, a chemical method, a UV/Fenton (aromatic hydrocarbon reagent) strong oxidation method and the like, and the sewage can effectively remove ammonia nitrogen, chemical oxygen demand, total phosphorus, biochemical oxygen demand and the like in the sewage after passing through the treatment assembly.
Wherein ecological remediation subassembly 3 includes and is located near a plurality of water conservancy diversion weirs 301 in the river course near integral type intensive treatment subassembly 2 outlet to blowdown water flow direction is the benchmark, the place ahead water surface come-up of water conservancy diversion weir is equipped with a plurality of artificial ecological chinampa 302, and fixes a position on the riverbed in river course of water conservancy diversion weir place ahead and has laid artificial pasture and water 303.
In this embodiment 2 are providedDiversion weir 301The utility model discloses a river course, including one-level revetment front porch, two water conservancy diversion weirs, water conservancy diversion weir, two water conservancy diversion weirs, and water conservancy diversion weirs, two water conservancy diversion weirs are laid in proper order and are located the river course domatic on one side of waters direction, and every the water conservancy diversion weir is constituteed by the water conservancy diversion canal with fill out the filter stone filler of locating in the water conservancy diversion canal, the preferred cobble filler of this filter stone filler, this water conservancy diversion weir makes its length direction and river course length direction keep unanimous when laying, and this water conservancy diversion weir is the trapezium structure with the parallel longitudinal section of river course cross section, be equivalent to in.
Artificial ecological floating island 302Comprises an island body 302a which is positioned and floated on the surface of a water body by adopting a weight method and is positioned near the center line 6 of a river channel, wherein 15-20 pieces/m are arranged on the island body2The aquatic plants 302b with developed root systems are planted at intervals, and the lowest end of the root systems of the aquatic plants is lower than the lowest water level line 7 of the river channel. See fig. 6 and 7. The island body 302a is a plate-shaped structure formed by weaving polyester fibers and natural plant fibers, and the size of the plate-shaped structure in the embodiment can be designed to be 2000 × 1000 × 160mm, the porosity of the plate-shaped structure is 96%, and the specific surface area of the plate-shaped structure is 2000m2/m3Having an average load bearing of 50kg/m2(ii) a The specific mode that this island body passes through the fixed of heavy object method is: connect the island body of adjacent artificial ecological chinampa through 8mm diameter stainless steel rope 302c, at the terminal fixed connection counterweight stone 302d of rope simultaneously, utilize the action of gravity of counterweight stone and the traction of stainless steel rope to fix a position the island body, specific counterweight stone weight, hang position, stainless steel cableThe length is comprehensively determined according to factors such as the field survey result of the water area where the artificial ecological floating island is arranged, the shape of the artificial ecological floating island and the like. Plant planting holes 302e are formed on the island body at intervals, the aperture of the plant planting holes is preferably 90-100mm in the embodiment, aquatic plants are planted in the plant planting holes, wherein the number of the plant planting holes is 16 holes/m2Planting one aquatic plant in each hole, the planting density of the aquatic plants is 16 plants/m2The developed root system of the aquatic plant can penetrate through the bottom of the plant planting hole of the woven forming plant and extend into the water body, and the secondary biodegradation can be realized when sewage flows through the part of the water body and passes through the developed dense plant root system. The design mode of the artificial ecological floating island can realize the plant division and the seed falling growth on 100 percent of the surface area of the artificial ecological floating island.
Artificial aquatic weed 303Including a number of individual artificial aquatic weed units 303 a. Referring to fig. 8, each artificial aquatic weed unit includes a tether 303a-1, which in this embodiment is a 8mm diameter nylon tether. One end of the rope is fixedly provided with an artificial float grass body 303a-2, and the length of the artificial float grass body in the embodiment is designed to be 80 cm; the artificial aquatic weed body comprises a strip-shaped sinking weight 303a-21 fixedly connected with one end of a tether, a plurality of fibrous biomembrane carriers 303a-22 which are vertically arranged in parallel are fixedly arranged on the sinking weight, a floater 303a-23 is formed at the top of each biomembrane carrier, and the fibrous biomembrane carriers can be vertically arranged under the action of buoyancy, the sinking weight and the floater when the artificial aquatic weed body is positioned in a water body; the artificial aquatic plant body is formed by adopting a high-molecular composite material, simulates aquatic plant branches and leaves, can freely float in water to form an upper, middle and lower three-dimensional structure layer, has a porous structure, has a high specific surface area, and can enrich microorganisms on the surface of the artificial aquatic plant to form a microenvironment with an aerobic-facultative-anaerobic composite structure, so that nitrification and denitrification effects can be realized. The other end of the rope is fixed in a sinking block 303a-3 which can be formed by using material with larger weight or larger density, in this embodiment, the rope is formed by pouring concrete into a concrete pier of 200X 200, and the other end of the rope is poured along with the concreteThe construction process is fixed in the concrete pier.
The artificial float grass units are uniformly distributed according to 9-12 roots/m2The distribution density is distributed at the bottom of the river channel, and the most preferable distribution density in the embodiment is 9 pieces/m2. When the artificial aquatic weed unit is laid, different fixing modes are adopted according to different matrix conditions of riverbeds at the bottoms of the riverways, when the riverbeds at the bottoms of the riverways are natural matrix, the artificial aquatic weed unit can be directly placed on the riverbeds at the bottoms of the riverways at intervals, and the artificial aquatic weed unit is fixed by utilizing the gravity of a water sinking block (a concrete pier), which is shown in a figure 9; when the riverbed at the bottom of the riverway is a soil flexible substrate, the earthwork standard room 303b can be adopted to arrange a plurality of submerged blocks of the artificial aquatic plant units according to 9-12 roots/m2(the preferred number of the cells is 9/m in this embodiment2) The arrangement density interval of the anchor rods is embedded in the geocell, then planting soil 303c is backfilled in other geocells of the geocell, a plurality of geocell chambers backfilled with the planting soil at intervals are fixedly provided with an anchor rod 303d, and the anchor rod can be inserted into a river bed of a soil flexible substrate to position the geocell at the bottom of a river.
When sewage discharged from the water outlet of the integrated reinforced treatment component enters the ecological restoration component, the sewage sequentially flows through the two flow guide weirs, the flow guide weirs prolong the flowing process length and time of the discharged water entering a river channel, and the sewage can be settled and filtered by the cobblestone filler to finish primary purification; the sewage passes through the diversion weir and then contacts with the artificial ecological floating island and the artificial aquatic plants, and the secondary biodegradation process of the sewage is realized by utilizing developed root systems of aquatic plants planted on the artificial ecological floating island and biomembrane carriers arranged on the artificial aquatic plants. This ecological remediation subassembly essence is a biological interception area, and it sets up in the waters that the river gushes the river course and is close to drain and drain place bank area, can go out the biological interception to the drain outlet, has delayed the time of going into the river of drainage, plays the effect in ecological buffering area, protects the ecosystem in near drain outlet waters. The ecological restoration assembly has good ecological benefit, can effectively control the pollutant diffusion of the discharge port, enables the pollutant to be rapidly settled, is suitable for the point source pollution control of the river reach with small flow and multiple discharge ports, and has high landscape benefit.
The treatment method for river regulation by adopting the treatment system mainly comprises the following steps:
s1: analyzing a pollution source, investigating sewage outlets along a river course on site and analyzing the amount of collected water of the sewage outlets; according to the analysis result of the pollution source and the analysis result of the water collected by the sewage discharge outlets, a sewage intercepting pipe network is arranged at the side of the river course along the current river mouth line towards the land area direction, so that the water inlets of the sewage intercepting pipe network are communicated with the sewage discharge outlets along the river to bring the sewage discharged from the sewage discharge outlets along the river into the sewage intercepting pipe network;
s2: sewage enters the integrated reinforced treatment component from a water outlet of the sewage interception pipe network through a sewage inlet of the integrated reinforced treatment component, sequentially flows through a hydrolysis acidification tank, a contact oxidation tank, a secondary sedimentation tank and a disinfection tank, is discharged into a river channel from a water outlet of the integrated reinforced treatment component through a sewage pump, and is treated by a sludge drying bed;
s3: the sewage discharged from the water outlet of the integrated strengthening treatment component flows through the flow guide weir of the ecological restoration component in sequence, the sewage is settled and filtered by the filter stone filler filled in the flow guide weir, then flows through the artificial ecological floating island positioned at the upper half part of the river water body and the artificial aquatic plant positioned at the lower half part of the river water body, and after the sewage is subjected to secondary biodegradation by utilizing the developed root system of the aquatic plant planted on the artificial ecological floating island and the biomembrane carrier arranged on the artificial aquatic plant, the sewage interception centralized treatment process for discharging the sewage to the river is completed.
The utility model discloses processing system includes the sewage interception pipe network, integral type intensive treatment subassembly and ecological remediation subassembly, it turns into controllable point source pollution back through intercepting the non-point source pollution of dirty pipe network dispersion, through integral type intensive treatment subassembly carry on concentrate high-efficient and intensive processing thereby the high-efficient in the sewage of removing a large amount of sludge deposition, ammonia nitrogen, chemical oxygen demand, total phosphorus and biochemical oxygen demand etc. again, then after the water conservancy diversion weir in the ecological remediation subassembly carries out preliminary sedimentation and filters, flow through artificial ecological chinampa and artificial pasture, utilize the flourishing root system of aquatic plant and biomembrane carrier to carry out secondary biodegradation to sewage, realize sewage purification; the treatment system has the advantages of centralized treatment of sewage interception, more thorough control of sewage direct discharge and good scale effect of centralized treatment, and the combination of the biofilter process and the ecological restoration technology, further effective control of pollutant diffusion at the discharge port through the ecological effect on the basis of ensuring high-efficiency strengthening treatment, and good ecological effect and environmental effect.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a cut dirty centralized processing system for river regulation which characterized in that: comprises that
The sewage intercepting pipe network is arranged at the side of the current river mouth line of the river channel facing the land area direction, the water inlet of the sewage intercepting pipe network is communicated with each sewage discharging port along the river, and sewage discharged from each sewage discharging port along the river can be contained in the sewage intercepting pipe network;
the integrated strengthening treatment component is positioned and embedded under the ground at one side of the land direction along the front line of the first-stage revetment of the sewage centralized treatment area, a sewage inlet of the integrated strengthening treatment component is communicated with a water outlet of the sewage intercepting pipe network, and a water outlet of the integrated strengthening treatment component is introduced into a river channel; the integrated strengthening treatment component comprises a hydrolysis acidification tank, a contact oxidation tank, a secondary sedimentation tank and a disinfection tank which are sequentially arranged and communicated along the sewage inlet direction; and
ecological remediation subassembly, this ecological remediation subassembly include and are located near a plurality of water conservancy diversion weirs of integral type intensive treatment subassembly outlet in the river course to sewage body flow direction is the benchmark, the place ahead water surface come-up of water conservancy diversion weir is equipped with a plurality of artificial ecological chinampa, and fixes a position on the riverbed in water conservancy diversion weir place ahead river course and has laid artificial pasture and water.
2. The pollutant interception and centralized treatment system for river regulation according to claim 1, wherein: the sewage intercepting pipe network consists of mutually communicated sewage intercepting pipes, and the diameters of the sewage intercepting pipes are not more than 800 mm; each sewage intercepting pipe comprises an inner pipe for collecting and conveying sewage and a sleeve pipe sleeved on the inner pipe in a coaxial positioning mode, the using state is used as the reference, a plurality of hoisting hooks for hoisting are fixedly arranged on the upper surface of the outer wall of the sleeve pipe at intervals along the axial direction, and a plurality of positioning supports for fixing the sleeve pipe on an installation substrate are fixedly arranged on the lower surface of the outer wall of the sleeve pipe at intervals along the axial direction.
3. The pollutant interception and centralized treatment system for river regulation according to claim 1, wherein: the hydrolysis acidification tank, the contact oxidation tank, the secondary sedimentation tank and the disinfection tank all comprise tank bodies which are communicated through a water passing port positioned at the middle upper part of the common side wall, wherein the bottoms of the hydrolysis acidification tank and the contact oxidation tank are respectively provided with a microporous aeration device capable of aerating the water body in a positioning manner, and a plurality of rows of elastic fillers are distributed in the two tank bodies above the microporous aeration device in a positioning manner along the vertical direction; the bottom of the secondary sedimentation tank is of a conical structure, an included angle between a bus of the conical structure and an axis is not more than 40 degrees, and an annular water collecting device is positioned in the secondary sedimentation tank; the top of the disinfection pond is positioned and provided with a reagent feeding device for feeding disinfectants.
4. The pollutant interception and centralized treatment system for river regulation according to claim 3, wherein: a sludge pump for pumping sludge at the bottom of the tank is positioned in the tank body of the hydrolysis acidification tank or the contact oxidation tank, and a discharge port of the sludge pump is communicated with a feed port of a sludge drying bed; at least one sewage pump for extracting the treated sewage is positioned in the disinfection tank, and a water outlet of the sewage pump is communicated with a river channel through a water outlet pipe.
5. The pollutant interception and centralized treatment system for river regulation according to claim 1, wherein: a plurality of the water conservancy diversion weir is laid in proper order on the river course domatic that one-level revetment front edge line is located waters direction one side, and every the water conservancy diversion weir comprises by the water conservancy diversion canal and the filter stone filler of locating in the water conservancy diversion canal, and the longitudinal section of this water conservancy diversion weir is the trapezium structure.
6. The pollutant interception and centralized treatment system for river regulation according to claim 1, wherein: the artificial ecological floating island comprises an island body which is positioned and floated on the surface of a water body by adopting a weight method and is positioned near the center line of a river channel, and 15-20 pieces/m are arranged on the island body2The aquatic plants with developed root systems are planted at intervals, and the bottommost end of the root systems of the aquatic plants is lower than the lowest water level of the river channel.
7. The pollutant interception and centralized treatment system for river regulation according to claim 1, wherein: the artificial aquatic weed comprises a plurality of artificial aquatic weed units, each artificial aquatic weed unit comprises a tether, one end of the tether is fixedly provided with an artificial aquatic weed body, and the other end of the tether is fixedly arranged in a submerged block; the artificial float grass body comprises a strip-shaped sinking weight which is fixedly connected with one end of the tether, a plurality of fibrous biomembrane carriers which are vertically arranged in parallel are fixedly arranged on the sinking weight, and a float is formed at the top of each biomembrane carrier.
8. The pollutant interception and centralized treatment system for river regulation according to claim 7, wherein: a plurality of the artificial aquatic weed units are arranged according to 9-12 roots/m2The arrangement density of the natural substrate is distributed on the riverway and riverbed of the natural substrate; or the submerged blocks of a plurality of the artificial aquatic weed units are 9-12 pieces/m2The arrangement density is embedded in the geocell at intervals, and a plurality of anchor rods which can be inserted into the riverway riverbed of the soil flexible substrate are fixedly arranged at intervals of other geocells backfilled with planting soil.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110862191A (en) * | 2019-11-22 | 2020-03-06 | 江苏易域经环境科技有限公司 | Sewage interception centralized treatment system and method for river treatment |
| WO2021098731A1 (en) * | 2019-11-22 | 2021-05-27 | 江苏易域经环境科技有限公司 | Wastewater interception centralized treatment system and treatment method for river channel regulation |
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