CN218507657U - Sewage anaerobic regulation/sludge reduction comprehensive treatment tank - Google Patents
Sewage anaerobic regulation/sludge reduction comprehensive treatment tank Download PDFInfo
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- CN218507657U CN218507657U CN202221721651.6U CN202221721651U CN218507657U CN 218507657 U CN218507657 U CN 218507657U CN 202221721651 U CN202221721651 U CN 202221721651U CN 218507657 U CN218507657 U CN 218507657U
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Abstract
The sewage anaerobic regulation/sludge reduction comprehensive treatment tank is characterized by comprising a grit chamber, an oil separation tank, a grid channel, an anaerobic regulation tank, a sludge concentration and storage tank and accessory facilities which are arranged in sequence; the grit chamber is provided with a sewage inlet pipe and an overflow pipe, and the adjusting tank is provided with a stirrer and an effluent submersible sewage pump; sludge in the external biochemical treatment section enters the regulating tank and the concentration tank respectively for treatment, and supernatant in the concentration tank enters the grid channel through the water collecting tank and then enters the regulating tank; and the sewage and the sludge in the regulating tank are mixed, stirred, homogenized, regulated and stored, and subjected to anaerobic reaction, and then the sewage and the sludge enter an external section, and part of the sludge in the external section returns to the comprehensive tank for treatment. The utility model discloses be fit for the preliminary treatment regulation of small-size sewage, anaerobism is biochemical and sludge concentration decrement comprehensive treatment.
Description
Technical Field
The utility model relates to a sewage and sludge treatment technical field, concretely relates to small-scale sewage is at preliminary treatment, anaerobism biochemical treatment, quality of water homogenization and water regulation processing to and the comprehensive processing technique in the aspect of sludge concentration and final decrement processing.
Background
The biochemical sewage treatment technology is the most widely applied sewage treatment technology in all countries of the world, wherein the simplest and most efficient AAO (abbreviation of Anaerobic Anaerobic-Anoxic Anaoxic-aerobic Oxic, also called A) 2 O) nitrogen and phosphorus removal technology has become the mainstream of urban or town sewage treatment technology. However, no matter what technology, besides the main core technology, the sewage treatment process also comprises the steps of pretreatment, regulation, lifting, sludge treatment and the like, and considering that the small-scale sewage is 'sparrow' with all the small internal organs and has particularity of construction site, investment cost, personnel and technology management, operation maintenance and the like, therefore, the small-scale sewage cannot be used for carrying out the general method of sewage treatment in cities or towns, and can only be effectively integrated for each process step according to the principle of the small-scale sewage, so as to ensure that all water quality indexes of the small-scale sewage can reach the standard stably, but not appear to be too complicated, and the investment cost, the operation cost and the occupied area are controlled within a reasonable range.
At present, small-scale sewage treatment is carried out by removing core process equipment such as a tank device of a biological contact oxidation method, a biological aerated filter device, A 2 Outside the complete set of O container device and MBR equipment, no efficient integration method exists in the aspects of pretreatment of sewage inflow, water quality and water quantity homogenization regulation, sedimentation prevention stirring, sewage lifting, sludge concentration and reduction treatment and the like, and the method usually considers the defects or is crude and simple and is extremely not beneficial to scientific construction and systematic operation management of small-scale sewage, so that the small-scale sewage is difficult to truly realize the comprehensive targets of low three and one, namely low construction investment, low operation cost, low operation requirement and low secondary pollutant discharge, therefore, the intensive comprehensive treatment of the aspects of small-scale sewage pretreatment, water quality and water quantity homogenization regulation, sedimentation prevention stirring, sewage lifting and sludge concentration reduction becomes urgent to be awaited in the industryThe subject of attention and innovation research is given.
Disclosure of Invention
The utility model aims at providing a be applied to sewage anaerobism regulation/mud decrement comprehensive treatment pond of small-scale sewage treatment, innovation, solve the problem that proposes in the above-mentioned background art, really accomplish the low-cost construction and handle the two and compromise with the high efficiency, for the water pollution prevention and cure financial and economic pressure that alleviates each side, make the sustainable development of water environmental protection conscientiously.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
generally, the sewage anaerobic regulation/sludge reduction comprehensive treatment tank comprises five functional areas, namely a grit chamber 1, an oil separation tank 2, a grid channel 3, an anaerobic regulation tank 4 and a sludge concentration and sludge storage tank 5 which are sequentially connected in a rectangular tank body 10, sequentially separated by a small partition wall 7, a first partition wall 9, a second partition wall 22 and an emptying bottom plate 23 and communicated by corresponding gate holes 15, water through holes 17, water falling holes 21 and water collecting tank wall holes 41. The head end of the grit chamber 1 is provided with a sewage inlet pipe 11, the tail end of the anaerobic adjusting tank 4 is provided with an effluent submersible sewage pump 27, the effluent is conveyed to an external biochemical treatment section through a riser 29, and the external biochemical treatment section is a main body of sewage biochemical treatment, such as a biological contact oxidation method tank body device, an aeration biological filter tank, A 2 O-container plant or MBR plant, also including small A in the form of reinforced concrete 2 O treating the tank body and the like. Partial sludge of the external biochemical treatment section can respectively enter an anaerobic adjusting tank 4 and a sludge concentration and storage tank 5 of the comprehensive treatment tank through a gravity sludge discharge pipe 34. The anaerobic adjusting tank 4 is also provided with a first stirrer 30 and a second stirrer 31.
In detail, the grit chamber 1 is a rectangular space surrounded by a rectangular chamber body 10 and a small partition wall 7, the bottom plate of the chamber is an emptying bottom plate 23, a sewage inlet pipe 11 is arranged at the water surface of the starting end of the chamber, a secondary pouring grit cone bucket 13 is arranged at the bottom of the chamber, an accident overflow pipe 12 is arranged at the side edge of the chamber, and a gate 14 is arranged at the tail end of the chamber; the grit chamber 1 is also provided with a stair step 6 which can be lowered to a position close to the water surface of the chamber, and is used for facilitating manual work to regularly clear and drag large floating objects, clear and draw out silt and sand at the bottom of the chamber and clear and transport oil-separating sludge beside the chamber in time.
The inflow direction of the water inlet pipe 11 in the grit chamber 1 is along the chamber wall direction; the gate 14 is positioned at the left side of the small partition wall 7; the gate hole 15 on the left of the small partition 7 is located at a height close to the water surface.
The oil separation tank 2 is a rectangular space between the small partition wall 7 and the first partition wall 9, the bottom plate of the tank is an emptying bottom plate 23, the starting end of the tank is provided with a water inlet gate hole 15, an air floatation oil separation complete device 16 is arranged from the starting end, the rear part of the tank is provided with a weir plate 8, and the tail end of the tank is provided with a water through hole 17 at the lower right corner of the first partition wall 9.
The grid channel 3 is a rectangular space between the first partition wall 9 and the second partition wall 22, the channel bottom plate is an emptying bottom plate 23, the channel is provided with a conventional electric fine grid machine 18 and a spiral slag extractor 19, a water collecting groove wall hole 41 on the second partition wall 22 is arranged in the upstream direction of the grid machine 18, a water stabilizing weir 20 is arranged at the rear part of the channel, and a water falling hole 21 is arranged on the emptying bottom plate 23 at the tail end of the channel after the water stabilizing weir 20.
The height of the water stabilizing weir 20 at the rear part of the grid channel 3 is 400 mm-750 mm.
The emptying bottom plates 23 of the grit chamber 1, the oil separation tank 2 and the grid channel 3 are positioned on the same horizontal plane, and the horizontal plane is 500 mm-900 mm lower than the highest water level 33 of the anaerobic regulating tank 4.
The sludge concentration and storage tank 5 is a rectangular bottom space surrounded by a rectangular tank body 10 and a second partition wall 22, the bottom plate of the tank and the bottom plate of the anaerobic adjusting tank 4 are the same large integral bottom plate, the bottom plates of the tank and the anaerobic adjusting tank are positioned on the same horizontal plane, and the tank is also provided with a top plate with an opening exposed out of the ground; a concentration cone bucket 39 poured for the second time, a sludge pump system 42 and an excess sludge pipe 38 positioned in the middle of the depth of the tank are arranged on the bottom plate of the tank, the excess sludge pipe 38 is a sludge inlet pipeline of the tank, and the sludge pump system 42 is a final outward sludge discharge system; the upper part of the sludge concentration and storage tank 5 is provided with a supernatant collecting tank 40 which is communicated with the grid channel 3 through a collecting tank wall hole 41 on the second partition wall 22.
The gate hole 15 on the left of the small partition wall 7 is used for allowing water flow to flow from the grit chamber 1 to the oil separation chamber 2;
the water through holes 17 at the bottom of the first partition wall 9 are used for enabling water flow to flow from the oil separation tank 2 to the grid channel 3;
the water falling hole 21 on the emptying bottom plate of the grid channel 3 is used for leading water flow to flow from the grid channel 3 to the anaerobic regulating tank 4;
the water collecting groove wall hole 41 at the right upper part of the second partition wall 22 is used for enabling supernatant after the gravity concentration of the residual sludge to flow into the upstream direction of the grid channel 3 from the sludge concentration sludge storage pool 5;
one end of the sewage lifting pipe 29 is connected with a submersible sewage pump 27 in the anaerobic regulating tank 4 through a pump valve group 28, and the other end is connected with a water inlet pipe of the external biochemical treatment section;
one end of the gravity sludge discharge pipe 34 is respectively connected with the anaerobic adjusting tank 4 through a first sludge discharge valve 35 and a recycled sludge pipe 37, and is connected with the sludge concentration and storage tank 5 through a second sludge discharge valve 36 and a residual sludge pipe 38, and the other end of the gravity sludge discharge pipe is connected with a sludge-water separation sludge discharge valve pipeline of the external biochemical treatment section;
one end of the sludge pump system 42 is connected to a concentration cone bucket 39 at the bottom of the sludge concentration and storage pool 5, and the other end of the sludge pump system conveys sludge to an external sludge dewatering treatment system or directly pumps the sludge into a tank car and then transports the sludge to be used as seedling and flower fertilization treatment and the like.
The five functional areas are effectively connected in a mode of connecting the holes, the water collecting tank, the submersible sewage pump, the valve and the pipeline according to the set plane position and the set height position, and finally the sewage anaerobic regulation/sludge reduction comprehensive treatment tank which is rectangular and has a main body structure buried underground is constructed.
The working process of the sewage anaerobic regulation/sludge reduction comprehensive treatment tank is the same.
In summary, sewage to be treated enters a grit chamber 1 at the head end in the chamber from a water inlet pipe 11, sludge settling, air floatation and oil separation, grating slag blocking, sludge (activated sludge) water stirring and mixing, water quality and water quantity homogenization and regulation, water pump lifting are sequentially carried out, and the activated sludge from an external biochemical treatment section is treated by gravity backflow, residual sludge gravity concentration, sludge anaerobic digestion, sludge anaerobic biochemical treatment and the like, wherein the residual sludge after decrement and anaerobic stabilization is discharged by a sludge pump system 42 of a concentrated sludge storage tank 5, and the final treatment is carried out by other related equipment or methods for harmless treatment; meanwhile, the mixed liquid of the sewage and the activated sludge after the anaerobic biochemical reaction is lifted by a water pump in the tank and enters an external biochemical treatment section for nitrogen and phosphorus removal treatment, so that the aim of comprehensive treatment of anaerobic regulation/sludge reduction of the sewage is fulfilled.
Furthermore, the detailed and specific working process of the present invention is as follows:
a grit chamber 1: sewage enters the water surface of the inner side wall side of the grit chamber 1 from a water inlet pipe 11 and slowly carries out rotational flow motion in the chamber, silt particles sink and fall into a grit cone hopper 13 at the bottom of the center under the similar advective sedimentation effect, after solid particles are separated by gravity, the sewage enters the next pretreatment process through a gate hole 15, the silt deposited in the grit cone hopper 13 is regularly and manually removed from an operation platform close to the water surface to remove silt at the bottom of the hopper, and larger floaters are sequentially removed;
and (3) oil separation tank 2: under the action of bubbles of an air floatation oil separation device at the bottom of the oil separation tank, grease substances float out of the water surface, water flow slowly advances, grease on the water surface is isolated and gathered due to the blockage of a weir plate, sewage after oil-water separation flows out of the lower part of the weir plate and then enters the next pretreatment procedure from a water through hole 17, and grease at the water surface is collected by an air floatation oil separation complete device 16 or is manually removed from an operation platform close to the water surface;
grid ditch 3: under the interception action of the electric fine grid machine 18, most solid floating objects are successfully intercepted, the grid slag is extruded and dehydrated by the slag extractor 19 and then is removed as garbage by manpower, and the sewage enters the regulating tank 4 from the water falling hole 21 at the rear part for anaerobic regulation treatment;
and (4) anaerobic adjusting tank: under the stirring action of the first stirrer 30 and the second stirrer 31, sewage is mixed, homogenized and regulated in a larger volume space in an anaerobic regulating tank, so that the high peak water quantity, the low peak water quantity and the water quality with different concentrations in different periods of time of inflow water are converted into the flat peak water quantity and the homogenized water quality with more balanced outflow water, and after regulation and storage treatment, the stability and the standard reaching of the subsequent biochemical treatment outflow water quality are greatly facilitated; meanwhile, sludge from an external biochemical treatment section enters an anaerobic adjusting tank 4 through a gravity sludge discharge pipe 34, a first sludge discharge valve 35 and a recycled sludge pipe 37 to be mixed with sewage, an anaerobic biochemical reaction is carried out, under the anaerobic environment of the tank (dissolved oxygen DO is less than or equal to 0.2 mg/L), activated sludge phosphorus accumulating bacteria release phosphate in the body to obtain energy, organic matters which can be rapidly degraded in the sewage are absorbed and converted into PHB (poly beta hydroxybutyrate) to be stored in cells, when the phosphorus accumulating bacteria enter the aerobic aeration environment of the external biochemical treatment section, the PHB stored in the body is degraded to start the synthesis and proliferation of the cells and absorb a large amount of phosphorus to form sludge with high phosphorus content, the sludge enters a sludge concentration sludge storage tank 5 for concentration through the gravity sludge discharge pipe 34, a second sludge discharge valve 36 and a residual sludge discharge pipe 38 of the comprehensive treatment tank and finally is discharged out of the system, so that the biochemical purpose is achieved, therefore, in the anaerobic biochemical adjustment tank 4, the sludge water quality mixed liquor which has completed the anaerobic phosphorus release task is treated through an anaerobic biochemical reaction valve group, a submerged pump → a sewage treatment tank 27 → a sewage treatment lift pipe 29 to ensure that sewage water can reach the biochemical denitrification and reach the standards.
Sludge concentration and storage tank 5: the excess sludge of the external biochemical treatment section needs to be concentrated by means of the comprehensive treatment tank, anaerobic digestion reduction is needed, the water content of the excess sludge is greatly reduced, the dry matter total amount of the excess sludge is anaerobically digested, the two functions simultaneously, the subsequent external related sludge dehydration treatment or sludge tank truck outward transportation workload is greatly reduced, and the final treatment and disposal cost of the sludge is remarkably saved.
The utility model discloses a following three creative innovative technologies and structure, the preliminary treatment coupling anaerobism of specially adapted small-scale sewage is adjusted and sludge concentration decrement is handled, and its technical creativity, advance and the practicality that is showing are as follows:
1. sewage pretreatment coupling adjustment technology with local double-layer structure
The technology is summarized as follows: the underground water pool has six pretreatment functions of sand setting, oil separation, fine grid slag blocking, water quality homogenization, water quantity regulation, sewage lifting pump house and the like by adopting a local double-layer structure, and obtains the technical and economic effects of simple structure, intensive land utilization, simplified flow, environmental friendliness, outstanding effect and cost saving.
The method specifically comprises the following steps: 3 areas, namely a grit chamber 1, an oil separation tank 2 and a grid channel 3, which are sequentially connected are opened at one corner of the upper part of an underground water tank, the grid channel 3 of the 3 rd area is directly connected with a main space anaerobic adjusting tank 4 through a water falling hole 21, an empty bottom plate 23 of the first three areas forms a local top plate of the main space anaerobic adjusting tank 4, most of the whole water tank is buried underground, and corresponding national regulations in the aspects of safety production such as hydraulic flow from high to low, civil engineering structure safety (a top plate reversed beam 25, anti-floating enlarged feet 26, top filling anti-floating and the like), convenient operation (stair steps 6 and corresponding hydrophilic platforms and the like), daily maintenance and production safety (open ventilation, zinc-impregnated steel grating, equipment holes, railings, ladder ladders and the like) are considered, so that the application effect of the technology is guaranteed.
The following are specifically mentioned: the average daily flow of the comprehensive domestic sewage is 15L/s, namely 1296m according to the current national Standard for design of outdoor drainage 3 At/d, its coefficient of variation K =2.4; when the average daily flow is 5L/s, namely 432m 3 At/d, its coefficient of variation K =2.7; the design value of the load of the sewage biochemical treatment facility is based on the average daily average hour, so the hour difference of the time is adjusted by a larger volume space, namely, the time is adjusted byThe volume between the lowest water level 32 and the highest water level 33 of the regulating tank 4 receives the difference of the actual change of the inlet water in hours, in other words, under the condition that the outlet water volume is relatively constant, the difference between the high peak water volume and the low peak water volume in 24 hours of the inlet water volume is obvious, therefore, the smaller the sewage treatment scale is, the larger the change coefficient is, and the more the regulating tank volume space matched with the sewage treatment scale is needed to adapt to the production requirement.
The sewage pretreatment coupling adjustment technology has more detailed hydraulic flow, internal structure, equipment, action function, detail characteristics and the like, which are already described in the foregoing, and are not described in detail herein. However, the creativity of the technology and the local double-layer structure is unprecedented and unique in small-scale sewage treatment, and the technical advancement is obvious.
The inventive sewage pretreatment coupling adjustment technology with the local double-layer structure mainly aims at the following two steps: firstly, the high-efficient integration has usually been many ponds such as relative dispersion independent grit chamber, oil interceptor, thin grid pond, equalizing basin and sewage lift pump pond in the past, and these ponds are different in size, and the combination degree is different, but usually are independent pond more than 2 ~ 3, and the utility model discloses integrate it into a structure and uncomplicated or even very succinct clear big pond, not only saved the land used, simplified the operation management, still improved reinforced concrete structure's efficiency, effective volume space obtains the performance of maximum; secondly, overcome the drawback of grid pond and equalizing basin and water pump pond co-construction in the past, this drawback mainly manifests: the equalizing basin is often darker because of the free surface of water and regulation volumetric needs, and the grid pond need not be as deep as the equalizing basin, nevertheless in an organic whole in order to build jointly for being total to the wall, therefore outwards encorbelment and go out from the equalizing basin wall quite, and the excavation of the foundation ditch of equalizing basin when being under construction must influence the original state soil layer of certain extent around the cell body, should outwards encorbelment the structure and avoid subsiding the crack and make civil engineering structure and basic processing's cost big, the reliability is far away as the utility model discloses an inside letter structure. Therefore, the utility model discloses not only easily civil engineering construction, the structural safety greatly promotes, and the cost after integrating is obviously less than the cost of dispersion construction moreover, therefore its superiority and practicality are very showing.
2. Energy-saving water quality homogenization and water quantity regulation coupled anaerobic biochemical reaction technology
The technology is summarized as follows: the large effective volume of the adjusting tank is utilized, the functions of water quality homogenization and water quantity adjustment are realized under the condition of sludge gravity recycling of an external biochemical treatment section, and the function of anaerobic biochemical reaction is also realized in the adjusting tank synchronously, so that the two purposes are achieved, and the practical requirements of shortening the process flow of small-sized sewage treatment, reducing structures or devices in the process link, reducing the energy consumption of a plurality of pumps with complete small and five-dirty sparrows and simplifying the operation management are met.
The method specifically comprises the following steps: sludge from an external biochemical treatment section enters an anaerobic adjusting tank 4 through a gravity sludge discharge pipe 34, a first sludge discharge valve 35 and a recycled sludge pipe 37, under the stirring action of a first stirrer 30 and a second stirrer 31, the sewage and the activated sludge are fully mixed in a larger volume space of the adjusting tank 4 by using the stirring power of the stirrer for preventing sedimentation and sedimentation, and the high peak water amount, the low peak water amount and the water quality with different concentrations in different periods of time of the inflow water are flattened through mixing, homogenization and regulation to be converted into the flat peak flow and homogenized water quality with more balanced outflow water, and the anaerobic biochemical reaction is synchronously carried out in the adjusting tank 4, so that the anaerobic treatment link or volume equipment of subsequent biochemical treatment is shortened or replaced, and the stabilization of the effluent water quality of the whole sewage treatment system is strengthened and ensured through the regulation treatment and biochemical anaerobic treatment of the anaerobic adjusting tank 4; and moreover, anaerobic stirring energy consumption does not need to be paid independently or additionally, and anaerobic sludge recycling pump equipment does not need to be specially arranged, but the submerged sewage pump 27 is directly lifted by utilizing the inlet water in the regulating tank, so that the technology is particularly suitable for the nitrogen and phosphorus removal treatment of small-scale sewage with the regulating tank.
The energy-saving anaerobic adjusting technology is applied to the pool type design of the comprehensive treatment pool, which is original, pioneering and obvious in technical advancement.
The application of the original energy-saving water quality homogenization and water quantity regulation coupled anaerobic biochemical reaction technology has the following main purposes or advantages: the anaerobic treatment link or volume device of an external biochemical treatment section is shortened or replaced, so that the anaerobic biochemical reaction space and the anaerobic sludge recycling water pump of container type and tank type sewage treatment devices are saved, the sewage treatment process is shortened, the operation management is simplified, and the energy consumption is reduced; and secondly, the volume space and the stirring equipment of the underground reinforced concrete water tank are fully utilized, so that the best use is achieved, and the stability and the standard reaching of the effluent quality of the whole sewage treatment system are further strengthened and guaranteed. Therefore, the technology is applied to the small-scale sewage denitrification and dephosphorization treatment with the regulating tank, and has very obvious superiority and practicability.
3. Excess sludge concentration and stabilization decrement technology for small-scale sewage treatment
The technology is summarized as follows: excess sludge is distributed from the middle position of the concentrated sludge storage tank by a water distribution pipe from multiple points in the horizontal direction, supernatant in the concentrated sludge storage tank overflows from a water surface water collecting tank, sludge in a bottom concentrated conical hopper is further concentrated and compacted, meanwhile, the sludge is subjected to digestion degradation reaction in an anaerobic environment, stabilization treatment is achieved, the total solid content of the sludge is subjected to decrement treatment, and finally the sludge is discharged by a sludge pump system at a higher concentration and a smaller volume.
The necessity: although the total amount of dry solids of the excess sludge generated every day in small-scale sewage treatment is not large, the total amount of dry solids of the excess sludge is not a negligible number after long-term accumulation, and moreover, the Total Phosphorus (TP) of biological phosphorus removal can be stably reached through an excess sludge discharge system, so that the excess sludge with higher water content in an external biochemical treatment section can meet the continuous and stable production requirement of sewage treatment only through concentration and reduction treatment.
Specifically, the sludge in the external biochemical treatment section enters the sludge concentration and storage tank 5 through the gravity sludge discharge pipe 34, the second sludge discharge valve 36 and the excess sludge pipe 38, and water is distributed in a 2-point or 4-point manner from the horizontal direction near the middle of the tank, at this time, the supernatant on the water surface layer of the concentration and storage tank 5 overflows from the water collection tank 40 and passes through the water collection tank wall hole 41, and the excess sludge supernatant (possibly carrying partial scum) in the upstream direction of the grid channel 3 enters the anaerobic regulation tank 4 to be treated again under the interception action of the electric fine grid machine 18. And the sludge after gravity concentration gradually settles into the concentration cone bucket 39 and is further compacted by gravity extrusion, anaerobic microorganisms in the sludge generate digestion degradation reaction in the anaerobic environment in the tank within the interval time of 2 times of sludge discharge, so that the sludge is stabilized, the total amount of sludge solids is reduced, finally, the sludge after concentration reduction and anaerobic stabilization reduction treatment is periodically discharged through the sludge pump system 42 of the concentration sludge storage tank 5, and the final treatment is carried out by other related equipment or methods for harmless treatment, for example, the sludge can be conveyed to an external sludge dewatering treatment system or directly pumped into a tank car and then is transported out for seedling fertilization treatment and the like.
The technology and the construction method are closely combined with the first two technologies, particularly are closely adjacent to the same wall of the first technology, and share a main structure bottom plate with the second technology, so that the independent arrangement of a common concentration tank or a mud storage tank is avoided, and the technology integrates various functions and advantages of gravity concentration, mud storage, anaerobic stabilization decrement, direct discharge of supernatant into an adjusting tank nearby, convenience of civil construction and the like, and particularly gives full play to two advantages, namely, the water content of residual sludge is greatly reduced through gravity concentration on the upper part in a water tank; carrying out anaerobic digestion on the total dry solid amount of the residual sludge through sludge storage at the middle lower part of the water tank; the two functions simultaneously greatly reduce the subsequent external related workload of sludge dehydration treatment or outward transportation of the sludge tank truck, so the technical invention obviously saves the final treatment and disposal cost of the sludge.
To sum up, the utility model discloses sewage anaerobism regulation/sludge decrement comprehensive treatment pond through the sewage pretreatment coupling adjustment technique, energy-saving water quality homogenization and the coupling anaerobism biochemical reaction technique of water regulation that use local double-deck structure in the first place, the excess sludge that is used for small-scale sewage treatment is concentrated and the stabilization decrement technique, has obtained the comprehensive treatment effect of preliminary treatment, anaerobism regulation/sludge decrement, has not only saved occupation of land and cost, has practiced thrift the energy consumption, has still simplified daily operation management and maintenance cost.
The utility model discloses at two big aspect of technical economy, have following five most obvious beneficial effect:
1. creates excellent conditions for the high-standard low-cost treatment of small-scale sewage
The utility model discloses the technique originality of sewage anaerobism regulation/mud decrement comprehensive treatment pond just leads, this pond is used for the sediment sand setting of sewage, the oil removal, the sediment is blocked to the thin grid, quality of water homogenization, the water yield regulation, sewage anaerobism biochemical treatment, sludge gravity concentration, the preliminary treatment such as mud anaerobism digestion stabilization decrement, intermediate treatment and terminal sludge treatment, not only the treatment effeciency is high, the operation energy consumption is few, and easily operation management, civil engineering pond type is positive, the clear easy construction of structure, each item function and index do not have the missing item and do not have the weak item, the performance is balanced, stable up-to-standard excellent condition has been created for the final play water of small-scale sewage.
2. The technical reliability is high: the utility model discloses the operation of pond type is reliable and stable not only, still shows all very reliable in all aspects of technical principle, technical parameter and construction detail. The utility model discloses a professional term is standard, does not have the link of secret difficult understanding, does not have the notion of tarnishing, and is more innocent and defecating, and the inner structure is surveyability, and is clear and definite, and when technical route planning design, just how fully considered avoids silting and stopping up and easy access, and considers how to eliminate potential fault factor in advance from the theoretical deep level, consequently, compare pond types or devices such as other discrete sewage pretreatment, intermediate treatment and terminal sludge treatment, the utility model discloses the user can accomplish as long as normal use does not have the worry of going into the future;
3. the whole cost is low, and the construction is uncomplicated, and the sexual valence relative altitude: the integrated comprehensive treatment tank type is designed and built, the internal structure is intensified and compact, the regulation volume and the anaerobic biochemical reaction volume are maximized, the underground external environment is friendly, no special material (all conventional water treatment materials) is used, and the possibility of failure and accident is reduced to the minimum through the detailed structure and the process design, so that the cost performance advantage is very obvious compared with the tank type or device with the same function and other forms;
4. the daily operation cost is low, and the financial and economic pressures paid by using units or governments are low:
the utility model discloses sewage anaerobism regulation/mud decrement comprehensive treatment pond is in minimum power consumption, minimum medicine consumption level in small-scale sewage treatment field. The reason is that sewage only once must, most basic sewage pump promotes, and adopts other forms then to need at least secondary promotion, the utility model discloses rely on gravity (the water head that presets ensures that water flows to low, mud adopts gravity concentration) and agitator "a tractor serves two-purpose" as far as possible, compare with other sewage integrated treatment pond types or device, the utility model discloses with pump machine equipment has reduced to the minimum, perhaps efficiency has promoted to the highest. Therefore, under the condition of the same sewage treatment capacity and treatment standard, the utility model has the advantages of least electricity consumption, concise flow, clearest links, lowest direct operation cost and lowest economic cost of water environment protection;
5. the operation is simple, the workload of maintenance is small, and the cost amortization of maintenance (small repair and major repair) is low:
the requirement on the professional skills of operation managers is low, the system can be used for working on duty after being trained slightly, and the situation that talents are difficult to find and stay due to complex operation of a past comprehensive treatment pool or equipment and high requirement on skills and low salaries can be avoided, or the system is in a paralysis state due to the fact that no people are easily managed. The utility model discloses a fault rate is low, and the trouble is easily observed, restores easily, need not the team operation maintenance of special specialty can, also do not have expensive part/subassembly and need frequently change, and the equipment device who adopts is the conventional general product of water treatment, does not receive the restriction of patent price factor. In a word, the utility model discloses single cost and the combined cost such as the repair cost of the human resource cost in the operation process, daily maintenance and/or professional maintenance all are present trade the same kind the lowest, therefore the sustainable development of easiest environmental protection.
To sum up, the utility model discloses sewage anaerobism regulation/mud decrement comprehensive treatment pond, disposable construction cost (cost) is minimum, and daily each item running cost includes that manpower and cost of maintenance are minimum, that is to say, the low-cost of small-scale sewage is built and the high efficiency is handled, and both have obtained effective compromise. Therefore, the utility model discloses an application prospect is very wide.
Drawings
FIG. 1 is a schematic plan view of the anaerobic sewage regulation/sludge reduction integrated treatment tank of the present invention.
Fig. 2 is a schematic sectional view of the present invention at 1-1.
Fig. 3 is a schematic cross-sectional view of the present invention taken along line 2-2.
Fig. 4 is a schematic sectional view of the present invention from 3 to 3.
Fig. 5 is a schematic view of the cross section 4-4 of the present invention.
Fig. 6 is a schematic sectional view of the present invention from 5 to 5.
Fig. 7 is a schematic cross-sectional view of the present invention at 6-6.
Wherein: 1-grit chamber, 2-oil separation chamber, 3-grid channel, 4-anaerobic adjusting chamber, 5-sludge concentration sludge storage chamber, 6-stair step, 7-small partition wall, 8-weir plate, 9-first partition wall, 10-rectangular tank body, 11-water inlet pipe, 12-accident overflow pipe, 13-grit cone bucket, 14-gate, 15-gate hole, 16-air floating oil separation complete set, 17-water through hole, 18-grid machine, 19-slag extractor, 20-water stabilizing weir, 21-water down hole, 22-second partition wall, 23-empty bottom plate, 24-tank top plate, 25-top plate reversed beam, 26-anti-floating enlarged foot, 27-submersible sewage pump, 28-pump valve set, 29-sewage, 30-first stirrer, 31-second stirrer, 32-lowest water level, 33-highest water level, 34-gravity sludge discharge pipe, 35-first emptying valve, 36-second sludge discharge valve, 37-sludge discharge pipe, 38-second stirrer pump system, 38-cone pipe, 39-residual water collecting tank, and 42-residual sludge collecting tank.
Detailed Description
In order to better understand the technical solution of the present invention, the following embodiments are described. It is to be understood that the described embodiments are merely exemplary embodiments of the present invention, and that various changes, modifications, alterations, integrations, variations, etc. may be made therein without departing from the spirit and scope of the invention.
Example one
In this example, the treatment amount of the anaerobic wastewater conditioning/sludge reduction integrated treatment tank (hereinafter referred to as integrated tank) was 800m 3 And/d, which is an important component of certain small-scale sewage treatment.
Generally, as shown in fig. 1 and fig. 2, the overall shape of the integrated pool is 11.20m long by 8.00m wide, and the buried depth below the terrace is 5.90m, wherein the internal control height of the main body part, i.e. the anaerobic adjusting pool 4, is 4.75m, the designed maximum water level is 4.60m (the large bottom plate of the pool shown in fig. 2 is taken as 0 benchmark), i.e. the super height above the maximum water level 33 line is 0.15m. The effective volume below the line of the highest water level 33 is 287m 3 Wherein the volume below the 32 line of the lowest water level is 39m 3 The actual adjustable volume is 248m 3 This corresponds to an average water amount of about 7.44 h.
With reference to fig. 1, 2 and 3, the integrated tank of the present invention is composed of a rectangular tank body 10, an internal-partitioned grit chamber 1, an oil separation tank 2, a grid channel 3, an anaerobic adjusting tank 4, a sludge concentration and storage tank 5 and an auxiliary facility. Wherein, the grit chamber 1 and the oil separation tank 2 are separated by a small partition wall 7, but the water flow of the grit chamber 1 flows into the oil separation tank 2 from a gate hole 15 on the small partition wall 7; the oil separation tank 2 and the grid channel 3 are separated by a first partition wall 9, but the water flow of the oil separation tank 2 flows into the grid channel 3 from water through holes 17 on the first partition wall 9; the grid channel 3 is communicated with the anaerobic adjusting tank 4 through a water falling hole 21 on an emptying bottom plate 23, the anaerobic adjusting tank 4 is not directly communicated with the sludge concentration and storage tank 5, but the sludge concentration and storage tank 5 is communicated through a water collecting groove wall hole 41 on a second partition wall 22.
The starting end of the comprehensive tank, namely the head end of the grit chamber 1, is provided with a sewage inlet pipe 11 with specification of DN350, the tail end of the anaerobic adjusting tank 4 is provided with three effluent submersible sewage pumps 27 with one pump and two pumps, wherein 1 pump is a mobile standby pump, and the parameter of the pump is Q =45m 3 H =12m, pe =3kw, small pump parameter Q =20m 3 H =12m, pe =2.2kw. Three water pumps are connected to a water outlet main pipe, namely the sewage is conveyed to an external biochemical treatment section from a sewage lifting pipe 29, the specification of the pipeline is DN150, and the external biochemical treatment section is the sewage biochemical treatment sectionThe main body of the device is a small AO two-stage sedimentation integrated treatment pool. The sludge of the secondary sedimentation tank mud bucket of the AO two-stage sedimentation integrated treatment tank respectively enters the anaerobic adjusting tank 4 and the sludge concentration and storage tank 5 of the comprehensive treatment tank through a gravity sludge discharge pipe 34, and the specification of the gravity sludge discharge pipe 34 is DN100. The anaerobic adjusting tank 4 is also provided with a first stirrer 30 and a second stirrer 31, the model powers of the two stirrers are the same, the two stirrers are both 1.1kW, and the two stirrers can be set to automatically operate intermittently, automatically operate in turns and stop operating when the water level is lower than 1.00 m.
Further, as shown in fig. 1, 2 and 3, the plane size of the grit chamber 1 is 2.50m long by 1.80m wide, the bottom of the grit chamber is provided with a secondary casting sand setting conical hopper 13 with the height of 400mm, the designed water depth of the grit chamber above the conical hopper is 470mm, the side edge of the grit chamber is provided with an accident overflow pipe 12 with the specification of DN400, and the tail end of the grit chamber is provided with a gate 14 with the specification of DN200; the grit chamber 1 is also provided with a stair step 6 which can be lowered to a position close to the water surface of the chamber by 200mm, and is used for facilitating manual work to regularly clear and drag large floating objects, clear and draw mud and sand at the bottom of the chamber and clear and transport oil-separating mud beside the chamber in time.
The inflow direction of the water inlet pipe 11 in the grit chamber 1 is along the chamber wall direction; the gate 14 of the DN200 is positioned at the left side of the small partition wall 7; the aperture of the gate hole 15 on the left of the small partition wall 7 is 250mm, and the center of the gate hole is positioned at the height position of 320mm below the designed water surface.
As shown in fig. 1, 2, 3 and 4, the oil separation tank 2 has a plane size of 2.50m long by 0.80m wide and a designed water depth of 800mm, an air flotation oil separation complete set device 16 is arranged from the beginning of water inlet, a weir plate 8 is arranged at the rear part of the tank, the width and height of the weir plate are 800mm and 800mm, a water passing space with the height of 200mm is reserved on a bottom plate after installation, a water passing hole 17 at the right lower corner of a first partition wall 9 is arranged at the tail end of the tank, and the water passing hole width is 200mm and the height is 600mm.
As shown in fig. 1, 2, 3 and 5, the grid ditch 3 has a planar size of 2.50m long by 0.45m wide, the ditch bottom plate is an empty bottom plate 23, the ditch is provided with a conventional electric fine grid machine 18 (with the specifications of grid gap 2mm, ditch width 450mm and ditch depth 2550 mm) and a matched spiral slag extractor 19, the designed water depth before the grid is H =830mm, the water depth after the grid is H =800mm, the upstream direction of the grid machine 18 is provided with a water collecting groove wall hole 41 (with the width 150mm x the height 250 mm) on a second partition wall 22, the water stabilizing weir 20 is arranged at the rear part of the ditch, and the empty bottom plate 23 at the tail end of the ditch after the water stabilizing weir 20 is provided with a water falling hole 21 (with the length 450mm x the width 300 mm).
The height of the water stabilizing weir 20 at the rear part of the grid channel 3 is 650mm, as shown in detail in fig. 5, when the adjusting tank 4 runs at a low water level in 24 hours of a day, the weir is used for ensuring that the set water depth before and after the grids in the grid channel 3 is ensured, so that the water of the grid machine does not flow through the grids too fast and over-excited and then leaks grid slag from the grid gaps into the adjusting tank 4, and the effect of the grid machine 18 is lost, therefore, the weir has the effect of stabilizing the water level, ensures that the grid machine 18 runs stably and efficiently, and simultaneously ensures that the air floatation oil separation complete equipment (shown in detail in fig. 4) has a constant water level during working so as to have the air floatation oil separation effect.
As shown in fig. 2 and 3, the empty bottom plates 23 of the grit chamber 1, the oil separation chamber 2 and the grid ditch 3 are at the same level, and the level is 800mm lower than the highest water level 33 of the anaerobic adjusting tank 4.
As shown in fig. 1, 2 and 3, the anaerobic adjusting tank 4 is a "knife-handle-shaped" volume space of the rectangular tank body 10 minus the grit chamber 1, the oil separation tank 2, the grid channel 3 and the sludge concentration and storage tank 5, and is a main body of the comprehensive tank, except for a water falling hole 21, the other 1 of the inflow port of the tank is a recycled sludge pipe 37 near the second stirrer 31, and the specification of the recycled sludge pipe 37 and the specification of the gravity sludge pipe 34 are the same as DN100; the first stirrer 30, the second stirrer 31 and the submersible sewage pump 27 are respectively arranged in the directions of three corners of the anaerobic adjusting tank 4.
As shown in fig. 1, 2, 3 and 6, the planar dimensions of the sludge concentration and storage tank 5 are 3.50m long by 2.50m wide and 6.35m total depth, wherein the height above the water surface is 500mm, the tank bottom plate and the bottom plate of the anaerobic adjusting tank 4 are the same large integral bottom plate, the two bottom plates are in the same horizontal plane, and the tank is also provided with an open top plate exposed out of the ground; the bottom plate of the pool is provided with a concentration cone bucket 39 which is poured for the second time, the height of the cone bucket is 1.50m, the effective water depth above the cone bucket is 4.35m, and the effective volume is 38.06m 3 (ii) a The tank is also provided with a sludge pump system 42, and the parameters of the sludge pump are Q =10m 3 /h，H＝14m，Pe =1.1kW, and the specification of the valve pipeline system is DN40; the excess sludge pipe 38 (DN 65) is positioned at 2.00m below the designed water level of the tank and used for feeding and distributing sludge, the excess sludge pipe 38 is divided into 4 branched DN40 outlets, the sludge is symmetrically fed and distributed from the horizontal direction, and the sludge pump system 42 is a final outward sludge discharge system; the upper part of the sludge concentration and storage tank 5 is provided with a supernatant water collecting tank 40,2 water collecting tanks are horizontally and parallelly arranged, the 2 water collecting tanks are communicated into an H shape at the middle part of the plane close to the back, the water collecting tank 40 is a triangular weir shape, the width is 110mm multiplied by the height is 200mm, and the stainless steel materials, after being collected, the supernatant in the tank finally passes through a water collecting tank wall hole 41 on the second partition wall 22 and is communicated with the grid channel 3, and the supernatant is discharged into the upstream direction of the grid channel 3 by gravity flow so that solid garbage such as scum hair carried by the supernatant can be removed by the grid machine;
the sludge discharge pump of the sludge pump system 42 is arranged in a concentration cone bucket 39 at the bottom of the sludge concentration and storage tank 5, and a DN40 pipeline of the sludge pump system is used for conveying sludge to an external sludge dewatering treatment system or directly pumping the sludge into a tank wagon and then transporting the sludge to the outside for fertilizing and treating nursery stock flowers and the like.
The detailed main process technical parameters are as follows:
the horizontal flow velocity of the silt and the sand of the grit chamber 1 is 0.04m/s, and the hydraulic retention time is 90s.
The horizontal flow velocity of the oil separation tank 2 is 0.037m/s, and the hydraulic retention time is 60s.
The grid gap of the grid ditch 3 is 2mm, the grid flow velocity is 0.3m/s, and the installation angle is 60 degrees.
The actual adjustable volume of the anaerobic adjusting tank 4 is 248m 3 The adjusting time is 7.44h, and the minimum adjusting volume under the lowest water level is 39m 3 And the shortest hydraulic retention time is 1.17h.
The gravity concentration time of the sludge concentration and storage tank 5 is 37.5h, and the surface load is 1.28m 3 /(m 2 H) sludge solids loading of 12.8 kg/(m) 2 D), maximum retention time of sludge 6.43d.
The anaerobic sewage regulation/sludge reduction comprehensive treatment tank of the embodiment saves an anaerobic reaction tank or equipment for the main process of biochemical treatment of small-scale sewage,the sludge volume for the small-scale sewage treatment is reduced by 7.47m 3 D, the sludge dry solids reduction is 11.2kg/d, i.e. a reduction of 20.44 tons of sludge with 80% water content per year, which corresponds to about a quarterly reduction in the sludge of one truck (5 tons) of outward disposal.
Example two
In this example, the treatment capacity of the anaerobic wastewater conditioning/sludge reduction integrated treatment tank was 100m 3 And/d, is an important component of sewage treatment in a certain 'farmhouse happiness' gathering area. Because the comprehensive pool is smaller in scale, and the sewage inlet water does not contain a large amount of oil stains, the difference of the comprehensive pool from the previous embodiment is that the oil separation pool 2 is not arranged in the comprehensive pool, the corresponding small partition wall 7, the weir plate 8 and the air-float oil separation complete set device 16 are not arranged, the arrangement directions of the gate 14 and the gate hole 15 are slightly changed, and the overall structure, the use function and the application effect of the comprehensive pool are not influenced.
In general, as shown in fig. 1 and 2, the overall shape of the integrated pool is 7.60m long by 4.60m wide, and the buried depth below the terrace is 3.30m, wherein the main body part, i.e., the internal control height of the anaerobic adjusting pool 4 is 2.50m, the designed maximum water level is 2.40m (the large bottom plate at the bottom of the pool shown in fig. 2 is taken as 0 benchmark), i.e., the height above the maximum water level 33 line is 0.10m. The effective volume below the line of the highest water level 33 is 52.48m 3 Wherein the volume below the lowest water level 32 line is 7.13m 3 The actual adjustable volume is 45.35m 3 This corresponds to an average water amount of about 10.88 h.
With reference to fig. 1, 2 and 3, the integrated tank of the present invention comprises a rectangular tank body 10, an internal separated grit chamber 1, a grid channel 3, an anaerobic adjusting tank 4, a sludge concentration and storage tank 5 and an auxiliary facility. Wherein, the grit chamber 1 and the grid channel 3 are separated by a first partition wall 9, but the water flow of the grit chamber 1 flows into the grid channel 3 from water through holes 17 on the first partition wall 9; the grid channel 3 is communicated with the anaerobic adjusting tank 4 through a water falling hole 21 on an emptying bottom plate 23, the anaerobic adjusting tank 4 is not directly communicated with the sludge concentration and storage tank 5, but the sludge concentration and storage tank 5 is communicated through a water collecting groove wall hole 41 on a second partition wall 22.
The starting end of the comprehensive tank, namely the head end of the grit chamber 1, is provided with a sewage inlet pipe 11 with the specification of DN300 and an anaerobic adjusting tankTwo effluent submersible sewage pumps 27 are arranged at the tail ends of the 4 pumps, one pump is used, and the other pump is standby, and the parameters of the water pumps are Q =10m 3 H =10m, pe =0.55kw. The two water pumps are connected to a water outlet main pipe, namely, the sewage is conveyed to an external biochemical treatment section from a sewage lifting pipe 29, the specification of the pipeline is DN50, and the external biochemical treatment section is a container type AO two-stage precipitation integrated treatment device which is a main body of the sewage biochemical treatment. The sludge of the secondary sedimentation tank mud bucket of the AO integrated device enters the anaerobic adjusting tank 4 and the sludge concentration and storage tank 5 of the comprehensive treatment tank respectively through a gravity sludge discharge pipe 34, and the specification of the gravity sludge discharge pipe 34 is DN40. The anaerobic adjusting tank 4 is also provided with a first stirrer 30, the power of the stirrer is 0.37kW, and the stirrer can be set to automatically and intermittently operate and stop operating when the water level is lower than 0.80 m.
Further, as shown in fig. 1, 2 and 3, the plane size of the grit chamber 1 is 2.00m long by 1.20m wide, the bottom of the grit chamber is provided with a secondary casting sand setting cone hopper 13 with 400mm high, the designed water depth of the grit chamber above the cone hopper is 250mm, the side edge of the grit chamber is provided with an accident overflow pipe 12 with the specification of DN300, and the tail end of the grit chamber is provided with a gate 14 with the specification of DN150; the grit chamber 1 is also provided with a stair step 6 which can be lowered to a position close to the water surface of the chamber by 150mm and is used for facilitating manual work to regularly clear and drag larger floaters and clear and draw mud and sand at the bottom of the chamber.
The inflow direction of the water inlet pipe 11 in the grit chamber 1 is along the chamber wall direction; the gate 14 of the DN150 is located to the right of the first partition wall 9; the aperture of the gate hole 15 on the right side of the first partition wall 9 is 200mm, and the center of the gate hole is positioned at the height position of 150mm below the designed water surface. The gate hole replaces the water through hole 17 at the lower right corner of the original first partition wall 9.
As shown in fig. 1, 2, 3 and 5, the grid channel 3 has a planar size of 2.00m by 0.35m in length and an empty floor 23, and is equipped with a conventional electric fine grid machine 18 (specification of grid gap 1.5mm, channel width 350mm and channel depth 1600 mm) and a matched spiral slag extractor 19 (the slag extractor may not be provided), the designed water depth H =450mm in front of the grid and H =420mm in back of the grid, the upstream direction of the grid machine 18 is provided with a water collecting groove wall hole 41 (width 150mm by height 220 mm) on a second partition wall 22, the back of the channel is provided with a water stabilizing weir 20, and the empty floor 23 at the end of the channel is provided with a water falling hole 21 (length 350mm by width 300 mm) behind the water stabilizing weir 20.
The height of the water stabilizing weir 20 at the rear part of the grid ditch 3 is 500mm, as shown in detail in fig. 5, when the adjusting tank 4 is operated at a low water level in 24 hours of a day, the weir is used for ensuring the set water depth before and behind the grids in the grid ditch 3, so that the water of the grid machine does not flow through the grids and is over-excited, grid slag leaks from the grid gaps to enter the adjusting tank 4, and the function of the grid machine 18 is lost, therefore, the weir plays a role in stabilizing the water level, and ensures that the grid machine 18 operates stably and efficiently.
As shown in fig. 2 and 3, the emptying floors 23 of both the grit chamber 1 and the grid trench 3 are at the same level 600mm below the highest water level 33 of the anaerobic adjusting tank 4.
As shown in fig. 1, 2 and 3, the anaerobic adjusting tank 4 is a rectangular tank body 10 minus a "knife handle-shaped" volume space of the grit chamber 1, the grid channel 3 and the sludge concentration and sludge storage tank 5, and is a main body of a comprehensive tank, an inflow port of the tank is provided with a downpipe hole 21, and the other 1 is a recycled sludge pipe 37 at the upper left part shown in fig. 1, and the specification of the recycled sludge pipe is DN40 together with the specification of the gravity sludge discharge pipe 34; because the pool volume is less, this synthetic pool only establishes first agitator 30, does not establish second agitator 31, and first agitator 30 and stealthily dirty pump 27 all are located the right direction of anaerobism equalizing basin 4.
As shown in fig. 1, 2, 3 and 6, the planar dimensions of the sludge concentration and storage tank 5 are 2.00m in length by 2.00m in width and 3.60m in total depth, wherein the height above the water surface is 300mm, the tank bottom plate and the bottom plate of the anaerobic adjusting tank 4 are the same large integral bottom plate, the two bottom plates are in the same horizontal plane, and the tank is also provided with an open pore top plate exposed out of the ground; a secondary pouring concentration cone bucket 39 is arranged on the bottom plate of the pool, the height of the cone bucket is 0.80m, the effective water depth above the cone bucket is 2.50m, and the effective volume is 10m 3 (ii) a The tank is also provided with a sludge pump system 42, and the parameters of the sludge pump are Q =6m 3 H, H =14m, pe =0.55kw, with specification DN25 for valve pipework; the excess sludge pipe 38 (DN 40) is positioned at 1.20m below the designed water level of the tank, the excess sludge pipe 38 is divided into 2 left and right DN25 outlets, the sludge is symmetrically fed and distributed from the horizontal direction, and the sludge pump system 42 is used for finally discharging the sludge outwardsA system; the upper part of the sludge concentration and storage tank 5 is provided with a T-shaped supernatant water collecting tank 40, the tank shape is a triangular weir shape, the width is 90mm, the height is 170mm, and the supernatant in the tank finally passes through a water collecting tank wall hole 41 which is arranged on the second partition wall 22 and communicated with the grid channel 3 after being collected, and is discharged into the upstream direction of the grid channel 3 by gravity flow so that solid garbage such as scum hair carried by the supernatant can be removed by the grid machine;
the sludge discharge pump of the sludge pump system 42 is arranged in a concentration cone bucket 39 at the bottom of the sludge concentration and storage tank 5, and a DN25 pipeline of the sludge pump system is used for conveying sludge to an external sludge dewatering treatment system or directly pumping the sludge into a tank wagon and then transporting the sludge to the outside for fertilizing and treating nursery stock flowers and the like.
The detailed main process technical parameters are as follows:
the horizontal flow velocity of the silt and the settled sand of the grit chamber 1 is 0.01m/s, and the hydraulic retention time is 96s.
The grid gap of the grid ditch 3 is 1.5mm, the flow velocity of the passing grid is 0.1m/s, and the installation angle is 60 degrees.
The actual adjustable volume of the anaerobic adjusting tank 4 is 45.35m 3 The adjusting time is 10.88h, and the minimum adjusting volume under the lowest water level is 7.13m 3 The shortest hydraulic retention time is 1.71h.
The gravity concentration time of the sludge concentration and storage tank 5 is 3.4 days, and the surface load is 0.35m 3 /(m 2 H) sludge solids loading of 3.5 kg/(m) 2 D), maximum sludge retention time 13.61d.
The anaerobic sewage regulation/sludge reduction comprehensive treatment tank saves an anaerobic reaction tank or equipment for the main process of biochemical treatment of the small-scale sewage, and reduces the sludge volume for the small-scale sewage treatment by 0.93m 3 And d, the dry solid of the sludge is reduced by 1.4kg/d, namely, the sludge with 80 percent of water content is reduced by 2.56 tons every year.
Can see from above two embodiments, the utility model discloses the structure is whole just, and inside is not complicated, implements very easily, can both accomplish the homogenization regulation and storage of sewage preliminary treatment of different scales and quality of water yield in step, can also the volume advantage of full play equalizing basin self, plays the effect of anaerobism biochemical treatment to can carry out effective concentration and fundamentally to excess sludge and carry out anaerobic digestion decrement processing to mud, compare with other independent separately or the sewage treatment pond of part integration, the utility model discloses obtained simple and direct, handle high efficiency, build low cost, the low-cost beneficial effect of operation.
Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and for those skilled in the art, it can still modify the technical solutions of the embodiments of the present invention, or equally replace some technical features of the embodiments, and any modifications, equivalents, improvements, etc. made should be included in the scope of the present invention.
Claims (5)
1. The sewage anaerobic regulation/sludge reduction comprehensive treatment pool is characterized in that: the device consists of five functional areas including a rectangular tank body (10) and a grit chamber (1), an oil separating tank (2), a grid channel (3), an anaerobic adjusting tank (4) and a sludge concentration and storage tank (5) which are sequentially connected in the tank, and is sequentially separated by a small partition wall (7), a first partition wall (9), a second partition wall (22) and an empty bottom plate (23) and communicated by corresponding gate holes (15), water through holes (17), water falling holes (21) and water collecting tank wall holes (41); the head end of the grit chamber (1) is provided with a sewage inlet pipe (11), the tail end of the anaerobic adjusting tank (4) is provided with an effluent submersible sewage pump (27), and the effluent submersible sewage pump (27) is conveyed to an external biochemical treatment working section through a lifting pipe (29); partial sludge of the external biochemical treatment section respectively enters the anaerobic adjusting tank (4) and the sludge concentration and storage tank (5) through a gravity sludge discharge pipe (34), and the adjusting tank is also provided with a first stirrer (30) and a second stirrer (31).
2. The integrated sewage anaerobic conditioning/sludge reduction treatment tank as claimed in claim 1, wherein: the rear part of the grid channel (3) is provided with a water stabilizing weir (20), and the height of the weir is 400-750 mm.
3. The integrated sewage anaerobic conditioning/sludge reduction treatment tank as claimed in claim 1, wherein: the emptying bottom plates (23) of the grit chamber (1), the oil separation tank (2) and the grid channel (3) are positioned on the same horizontal plane, and the horizontal plane is 500-900 mm lower than the highest water level (33) of the anaerobic adjusting tank (4).
4. The integrated sewage anaerobic conditioning/sludge reduction treatment tank as claimed in claim 1, wherein: the bottom plates of the anaerobic adjusting tank (4) and the sludge concentration and storage tank (5) are positioned on the same horizontal plane, and the space below the emptied bottom plate (23) of the grit chamber (1), the oil separation tank (2) and the grid canal (3) forms one part of the effective volume space of the anaerobic adjusting tank (4).
5. The integrated sewage anaerobic conditioning/sludge reduction treatment tank of claim 1, wherein: and the water collecting tank wall hole (41) of the sludge concentration and storage tank (5) is positioned in the upstream direction of the grid channel (3).
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