CN105439286A - Vertical current sewage ecological treatment system - Google Patents
Vertical current sewage ecological treatment system Download PDFInfo
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- CN105439286A CN105439286A CN201510904047.5A CN201510904047A CN105439286A CN 105439286 A CN105439286 A CN 105439286A CN 201510904047 A CN201510904047 A CN 201510904047A CN 105439286 A CN105439286 A CN 105439286A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/327—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae characterised by animals and plants
Abstract
The invention relates to a vertical current sewage ecological treatment system. The system comprises a pond body, a plurality of first floating type bio-membrane reactors and a plurality of second floating type bio-membrane reactors. The pond body comprises a sewage area, an anaerobic area, an anoxic area and an aerobic area from bottom to top. The upper end and the lower end of each first floating type bio-membrane reactor and the upper end and the lower end of each second floating type bio-membrane reactor are all open. The first floating type bio-membrane reactors and the second floating type bio-membrane reactors are all arranged in the pond body, and the first floating type bio-membrane reactors are arranged in front of the second floating type bio-membrane reactors and used for conducting multi-level treatment on sewage. The side wall of the sewage area of the pond body is provided with multiple water inlets, and multiple water inlet pipes are connected to the water inlets and correspond to the bottom ends of the first floating type bio-membrane reactors and the bottom ends of the second floating type bio-membrane reactors respectively. The rear end of the pond body is also provided with a water outlet.
Description
Technical field
The present invention relates to technical field of sewage, particularly relate to vertical current sewage ecological treatment system.
Background technology
The development of industrialization and modern agriculture also brings the severe contamination of water surrounding while creating huge material wealth, requirement in China " 12 " planning, the upgrading of sewage work should be accelerated, upgrading is carried out to the built sewage treatment facility of part, further raising, to the reduction ability of principal pollutant, also requires to actively promote reclaimed wastewater reuse simultaneously.
At present, the sewage disposal technology of domestic normal employing has: A2O technique+coagulating precipitation+filter+sterilization or multi-mode A2O+ denitrification filter pool+coagulating precipitation+filtration+sterilization, also the employing France Veolia technology had is the techniques such as the second-stage treatment+denitrification filter pool+coagulating high speed pellets+sterilization of representative, wherein A2O method is also known as AAO method, it is the abbreviation (anaerobic-anoxic-oxic method) of English Anaerobic-Anoxic-Oxic first letter, it is a kind of conventional sewage treatment process, the schema of common sewage treatment process as shown in Figure 1, the basic characteristics of this sewage treatment process are that treatment scheme is long, structures floor plan, floor space is large, and sewage at least needs second lift, in order to remove total nitrogen, in most cases need additional carbon, cause processing costs higher.And processing environment is poor, the water surface of process structures is muddy, has peculiar smell to produce, pollutes the environment equally, cause the not thorough of sewage disposal in sludge handling process.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention solves that the effect of existing sewage treatment process to sewage disposal is bad, problem costly.
(2) technical scheme
In order to solve the problems of the technologies described above, the invention provides a kind of vertical current sewage ecological treatment system, it is characterized in that: comprise pond body, the first floatation type biofilm reactor and the second floatation type biofilm reactor, described pond body is divided into mud district, anaerobic zone, oxygen-starved area and aerobic zone from bottom to top; The two ends up and down of described first floatation type biofilm reactor and the two ends up and down of the second floatation type biofilm reactor are uncovered, the quantity of described first floatation type biofilm reactor is some, the quantity of described second floatation type biofilm reactor is some, described first floatation type biofilm reactor and the second floatation type biofilm reactor are all located in the body of described pond, and described first floatation type biofilm reactor is located at the front of described second floatation type biofilm reactor, for realizing, multiple-stage treatment is carried out to sewage; The sidewall in described Chi Ti mud district is provided with multiple water-in, described water inlet connects water inlet pipe, multiple described water inlet pipe respectively with the bottom one_to_one corresponding of described first floatation type biofilm reactor and the second floatation type biofilm reactor, circulate up and down inside and outside the first floatation type biofilm reactor and the second floatation type biofilm reactor for realizing sewage; The rear end of described pond body is also provided with water outlet, for being discharged by the sewage after process.
Wherein, the inside of described first floatation type biofilm reactor is provided with biologic packing material and the first floatation type aerator, is provided with biologic packing material and the second floatation type aerator in described second floatation type biofilm reactor.
Wherein, also be provided with in the body of described pond and cut off under water, the described quantity cut off under water is several, cut off parallel and interval described in several under water to arrange, described pond body is divided into multi-stage sewage treatment zone, adjacent two are cut off under water and are provided with gap respectively and between two relative sidewalls of described pond body, and adjacent two-stage sewage diposal area is communicated with by gap, and multistage described sewage diposal area and described gap form S shape water stream channel.
Wherein, described sewage diposal area comprises from front several first treatment zones then arranged and several second treatment zones, be provided with several the first floatation type cycling stream biofilm reactors in each described first treatment zone, in each described second treatment zone, be provided with several the second floatation type cycling stream biofilm reactors.
Wherein, described sewage diposal area also comprises several advanced treatment districts, and described advanced treatment district is located at the rear of described second treatment zone, and described first treatment zone and the second treatment zone are only located in described mud district, anaerobic zone, oxygen-starved area and aerobic zone.
Wherein, described first treatment zone and described second treatment zone are equipped with biological floating island, and described biological floating island swims on the water surface; Described advanced treatment district is provided with floating living filter bed, and described floating living filter bed swims on the water surface.
Wherein, described sewage diposal area also comprises disinfection reactions district, and described disinfection reactions district is located at the rear in described advanced treatment district, is provided with sterilizing agent throwing mechanism and water flow scale tank in described disinfection reactions district.
Wherein, the top in described mud district is provided with return line, and the water-in of described return line is located at the second treatment zone of rearmost end, and the water outlet of described return line is located at the first treatment zone foremost, and the water-in of described return line is connected with reflux pump.
Wherein, multiple described water-in is all located at the middle part of the sidewall in described mud district.
Wherein, described pond body adopts geomembrane anti-seepage process.
(3) beneficial effect
Technique scheme tool of the present invention has the following advantages: vertical current sewage ecological treatment system provided by the invention comprises pond body, first floatation type biofilm reactor and the second floatation type biofilm reactor, pond body comprises the mud district arranged from bottom to top, anaerobic zone, oxygen-starved area and aerobic zone, several the first floatation type biofilm reactors and several the second floatation type biofilm reactors are located in the body of pond, and the first floatation type biofilm reactor is located at the front of the second floatation type biofilm reactor, the water inlet pipe that water inlet connects is corresponding with the bottom of the first floatation type biofilm reactor and the second floatation type biofilm reactor, the open at both ends up and down of the first floatation type biofilm reactor and the second floatation type biofilm reactor, sewage enters in the first floatation type biofilm reactor and the second floatation type biofilm reactor from water inlet pipe, and can circulate up and down inside and outside the first floatation type biofilm reactor and the second floatation type biofilm reactor, realize deodorizing and the denitrification effect of sewage, sewage in the process circulated up and down through anaerobism, oxygen-starved area and aerobic zone process sewage, finally flow out the clean water after process from the water outlet of rear end, sewage in the process flowed out through the repeatedly process of the first floatation type biofilm reactor and the second floatation type biofilm reactor, and realize anoxic and aerobic repeatedly operation, thus achieve sewage denitrogenation and dephosphorization to greatest extent, its treatment effect is better, and mud district of the present invention, anaerobic zone, oxygen-starved area and aerobic zone three-dimensional are arranged in a pond body, reduce the floor space of system, investment and running cost reduce greatly.
Accompanying drawing explanation
Fig. 1 is the schema of Sewage treatment systems of the prior art;
Fig. 2 is the structural representation of the vertical current sewage ecological treatment system that embodiments of the invention provide;
The vertical view (except the first floatation type biofilm reactor, the second floatation type biofilm reactor and biological floating island) of Fig. 3 Fig. 2;
Fig. 4 is the process flow sheet of vertical current sewage ecological treatment system.
In figure: 1: Chi Ti; 2: the first floatation type biofilm reactors; 3: the second floatation type biofilm reactors; 10: the first treatment zones; 11: the second treatment zones; 12: advanced treatment district; 13: disinfection reactions district; 20: the first floatation type aerators; 30: the second floatation type aerators; 40: biological floating island; 50: floating living filter bed; 60: water inlet pipe; 70: return line; 80: reflux pump; 90: cut off under water; 101: mud district; 102: anaerobic zone; 103: oxygen-starved area; 104: aerobic zone; 130: sterilizing agent throwing mechanism; 131: water outlet.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of protection of the invention.
In describing the invention, it should be noted that, except as otherwise noted, the implication of " multiple " is two or more; Term " on ", D score, "left", "right", " interior ", " outward ", " front end ", " rear end ", " head ", the orientation of the instruction such as " afterbody " or position relationship be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " etc. only for describing object, and can not be interpreted as instruction or hint relative importance.
In describing the invention, also it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary.For the ordinary skill in the art, visual particular case understands above-mentioned term concrete meaning in the present invention.
As shown in Figures 2 and 3, a kind of vertical current sewage ecological treatment system that the embodiment of the present invention provides, it is characterized in that: comprise pond body 1, first floatation type biofilm reactor 2 and the second floatation type biofilm reactor 3, pond body 1 comprise arrange from bottom to top mud district 101, anaerobic zone 102, oxygen-starved area 103 and aerobic zone 104, as shown in Figure 2, for ease of the situation in the body of pond is described, in figure, mud district 101, anaerobic zone 102, oxygen-starved area 103 and aerobic zone 104 are separated by dotted line, actually there is no obvious line of delimitation, the two ends up and down of the first floatation type biofilm reactor 2 and the two ends up and down of the second floatation type biofilm reactor 3 are uncovered, the quantity of the first floatation type biofilm reactor 2 is some, the biomembranous quantity of second floatation type is some, first floatation type biofilm reactor 2 and the second floatation type biofilm reactor 3 are all located at the position of aerobic zone 104 in pond body 1 and anaerobic zone 102, and the first floatation type biofilm reactor 2 is located at the front of the second floatation type biofilm reactor 3, for realizing, multiple-stage treatment is carried out to sewage, sewage flows to rear end (as shown in Figure 3 and Figure 4 from front end in treating processes, the left end of pond body is front end, right-hand member is rear end), the process of several the first floatation type biofilm reactors 2 and the second floatation type biofilm reactor 3 is passed through in flow process, realize the multiple-stage treatment to sewage, the sidewall in pond body 1 mud district 101 is provided with multiple water-in, water-in is located at the middle part of mud district 101 sidewall, water inlet connects water inlet pipe 60, multiple water inlet pipe 60 respectively with the bottom one_to_one corresponding of the first floatation type biofilm reactor 2 and the second floatation type biofilm reactor 3, circulate up and down inside and outside the first floatation type biofilm reactor 2 and the raw reactor of exorcising a demon of the second floatation type for realizing sewage, the rear end of pond body 1 is also provided with water outlet 131, for being discharged by the sewage after process.It should be noted that in Fig. 3 and Fig. 4, arrow direction is the direction of current.
Sewage enters in pond body 1 from water-in, successively through the top in mud district 101, anaerobic zone 102, oxygen-starved area 103 and aerobic zone 104, then fall, realize sewage circulating up and down inside and outside the first floatation type biofilm reactor 2 and the second floatation type biofilm reactor 3, sewage realizes organic matter degradation and nitrifying process in aerobic zone 104, the sewage of backflow carries out denitrification in oxygen-starved area 103, realize the removal of total nitrogen, sewage completes anaerobic degradation in oxygen-starved area 103, comprise organic hydrolysis, methanation and can the sedimentation of hypostasis, be 40% ~ 60% at the clearance of anaerobic zone 102 place COD, mud district 101 is the nitrated and storage zone of sludge anaerobic, anaerobic zone 102, the mud that oxygen-starved area 103 and aerobic zone 104 produce sinks to mud district, minimizing is carried out by anaerobic nitrification, stabilization treatment, the dissolved organic matter produced in mud nitrifying process enters anaerobic zone 102, reprocessing is carried out in oxygen-starved area 103 and aerobic zone 104, mud after inorganization then sinks to the bottom in mud district 101.
Further, the inside of the first floatation type biofilm reactor 2 is provided with in biologic packing material and the first floatation type aerator 20, second floatation type biofilm reactor 3 and is provided with biologic packing material and the second floatation type aerator 30.Sewage enters into the inside of the first floatation type biofilm reactor 2 and the second floatation type biofilm reactor 3 from the bottom of the first floatation type biofilm reactor 2 and the bottom of the second floatation type biofilm reactor 3, carry out reaction with biologic packing material and realize denitrification and deodorizing, simultaneously under the effect of the first floatation type aerator 20 and the second floatation type aerator 30, sewage realizes circulation up and down and greatly strengthen the denitrification effect of system inside and outside the first floatation type biomembrane reaction and the second floatation type biofilm reactor 3, and enhances the deodorizing effect of biologic packing material to sewage.
Further, also be provided with in pond body 1 and cut off 90 under water, the quantity cutting off 90 is under water several, several cut off 90 under water and arrange along the parallel and interval of the length direction of pond body 1, pond body 1 is divided into multi-stage sewage treatment zone, adjacent two are cut off 90 under water and are provided with gap respectively and between two relative sidewalls of pond body 1, and adjacent two-stage sewage diposal area is communicated with by gap, and multi-stage sewage treatment zone and gap form S shape water stream channel.Sewage enters in sewage diposal area from water-in, reaction is completed in sewage diposal area, because the pressure of water outlet 131 is less, sewage can flow to water outlet 131, cut off 90 under water and be not only separated out multi-stage sewage treatment zone, make sewage through multiple-stage treatment in the process flowed to the back-end, cut off the gap formed between 90 and sidewall under water simultaneously, the water stream channel that gap and multi-stage sewage treatment zone form S shape plays the effect of drainage to sewage.Sewage diposal area comprises again from front several the first treatment zone 10 and several second treatment zones 12 of then arranging, oxygen concn wherein in the first treatment zone 10 is lower, oxygen concn in second treatment zone 12 is higher, according to the width of each treatment zone, be provided with several the first floatation type biofilm reactors 2 in each first treatment zone 10, in each second treatment zone 12, be provided with several the second floatation type biofilm reactors 3.
Sewage diposal area also comprises several advanced treatment districts 12, advanced treatment district 12 is located at the rear of the second treatment zone 12, advanced treatment district 12 integrates the functions such as reaction, filtration, absorption, and the first treatment zone 10 and the second treatment zone 12 is only located in mud district 101, anaerobic zone 102, oxygen-starved area 103 and aerobic zone 104.First treatment zone 10 and the second treatment zone 12 are equipped with biological floating island 40, and biological floating island 40 swims on the water surface, to catch the aerosol produced in aeration process, slows down the impact for surrounding environment; Advanced treatment district 12 is provided with floating living filter bed 50, and floating living filter bed 50 swims on the water surface, and its function removes the suspended substance in the second treatment zone 12 outflow water further, and can play the effect of beautifying the environment and purifying air.Sewage diposal area also comprises disinfection reactions district 13, disinfection reactions district 13 is located at the rear in advanced treatment district 12, sterilizing agent throwing mechanism 130 is provided with in disinfection reactions district 13, also the water stream channel of S shape is provided with in disinfection reactions district 13, the water flowed out in advanced treatment district 12 is carried out disinfection, also be provided with water flow scale tank, can detect the water yield flowed out from water outlet 131, water outlet 131 is located on the aft end face of the pond body 1 corresponding with water flow scale tank.
As shown in Figure 3, in the present embodiment, the quantity of dividing plate 90 is 7, pond body is divided into 8 sewage diposal areas, wherein the quantity of the first treatment zone is 2, and the quantity of the second treatment zone is 3, the quantity in advanced treatment district is 2, the quantity in disinfection reactions district is 1, and the quantity for the treatment of zone at different levels is uncertain, rationally can arrange according to practical situation.
The top in mud district 101 is provided with return line 70, and the water-in of return line 70 is located at the second treatment zone 12 of rearmost end, and the water outlet 131 of return line 70 is located at the first treatment zone 10 foremost, and the water-in of return line 70 is connected with reflux pump 80.The top in mud district 101 is the mixed solution of mud and sewage, and mixed-liquor return to the first treatment zone 10 foremost, realizes again carrying out multiple-stage treatment to mixed solution by return line 70.
Further, pond body 1 adopts geomembrane anti-seepage process.Fabrication cost is significantly less than traditional concrete placement treating pond.
Vertical current sewage ecological treatment system provided by the invention adopts the mode of distributing multipoint water feeding sewage to be passed into each the first floatation type biofilm reactor 2 of multi-stage sewage treatment zone and the inside of the second floatation type biofilm reactor 3, current at the uniform velocity upwards enter into anaerobic zone 102, completing larger particles can the sedimentation of suspended substance and the Partial digestion of dissolved organic matter, sewage enters into oxygen-starved area 103 and aerobic zone 104 through anaerobic zone 102, simultaneously realize circulating up and down under the effect of the first floatation type aerator 20 and the second floatation type aerator 30, water (flow) direction becomes level subsequently, flow through the removal that multi-stage sewage treatment zone realizes organic degraded and total nitrogen, biological floating island 40 simultaneously in sewage diposal area catches the colloidal sol produced in aeration process, slow down the impact on surrounding environment, and create conditions for species diversity.Sewage enters advanced treatment district 12 behind several first treatment zones and the second treatment zone, mud-water separation is carried out in advanced treatment district 12, and complete the advanced treatment to organism, phosphorus etc. by the floating living filter bed 50 be arranged on the water surface, water after process enters into disinfection reactions district 13, by adding sterilizing agent, water outlet is carried out disinfection.Water after sterilization flows out from water outlet 131.
The degree of depth of the pond body 1 of vertical current sewage ecological treatment system of the present invention more than 6.5 meters, in the treating processes of sewage, anaerobic zone 102.The sludge settling that oxygen-starved area 103 and aerobic zone 104 produce carries out anaerobic nitrification to the bottom in the mud district 101 at the bottom of pond, available depth unconventional in system and to the vertical distribution characteristics of water temperature stability for mud district 101 anaerobic nitrification provides the envrionment conditions (temperature, basicity and dissolved oxygen control etc.) be suitable for very much needed for biochemical reaction.The soluble organic that residue biochemical sludge and the organism that can sink are formed at the bottom liquefaction process in mud district 101 diffuses into oxygen-starved area 103, for denitrification provides extra effective carbon source, further increases the clearance of total nitrogen.
It should be noted that, bed mud mainly contains three sources: the sedimentation of suspended substance in water inlet, the sedimentation of chemical dephosphorization mud and the sedimentation of biochemical sludge.Biodegradable moieties and not biodegradable moieties can be divided into by its composition.Biodegradable moieties is CO2, CH4, small soluble molecules organism and biological residue by anaerobic digestion process transition.Biological residue degraded slowly, will accumulate at the bottom of pond and slowly degrade, and all the other materials finally can be left sediment layer by all means, enter people's air or return to be dissolved in system water body, again participate in intrasystem various change procedure.In general, in system, bed mud accumulation total amount constantly increased with working time, and this conforms to practical situation.But after working time sufficiently long, the mainly increase of not biodegradable moieties.
In vertical current sewage ecological treatment system, temperature determined by temperature and water inlet water temperature.Its temperature gradients feature is as follows: at approximately level place, temperature depends on temperature, and in the bottom of pond body 1, temperature then controlled by water inlet water temperature.Bottom pond body 1, up there is the constant temperature zone of a height 3 ~ 4m at 3m place.In this constant temperature zone, temperature is kept in balance substantially, and upper and lower difference is no more than 0.5 DEG C.Contrast experiment shows, 11 DEG C are down to from 17 DEG C apart from body 16m place, pond water inlet water temperature, (BiologyOxygenDemand is that the dissolved oxygen content that a kind of microbial metabolism effect consumes carrys out secondary indication water body by an important indicator of Organic pollutants degree to its BOD.Its definition is: under aerobic conditions, and the quantity of the free oxygen that aerobic microbiological oxygenolysis unit volume Organic substance in water consumes, representation unit is the mg/litre of oxygen.Be mainly used in organic pollution situation in monitoring water body.General organism can be decomposed by Institute of Micro-biology, but need oxygen consumed during organic compound in microbial decomposition water, if the dissolved oxygen in water is not enough to supply the needs of microorganism, water body is just in pollutional condition) clearance is down to 47% (now the BOD clearance of 3m depth of water pond body 1 is close to zero) from 63%.Determine the shock absorption because of constant temperature zone thus, resistivity water temperature being reduced to this unfavorable factor can be increased, bed mud anaerobic digestion institute liberated heat can also be made full use of simultaneously.Therefore, vertical current sewage ecological treatment system mud district 101 is that the complete digestion of pool bottom sludge provides the favourable condition being better than other Sewage treatment systems.
The increase of the accumulation of mud mainly not biodegradable moieties in system, its composition is mainly the mud that the deposition of grid slag, sand setting, non-degradable and inertia suspended solids in Sewage Plant water inlet and chemical dephosphorization produce.This part bed mud needs periodic cleaning, but cleaning cycle is more than 20 years.Substantially prolongs treatment cycle, reduce labor force.And sewage achieves sewage in vertical current sewage ecological treatment system, mud, dirt process completely, thoroughly eliminate or reduce secondary pollution and pollution transportation that conventional sewage plant grid slag, dirty sand, mud, stink etc. cause.To break the normal procedure sewage work (air produced and sludge pollution, direct or indirect reduction periphery Land values) fixed pattern, vertical current sewage ecological treatment system technology can build up Ecological Park, fish for nearby residents provides, Condom etc., both can build ecoscape, improve the ecological environment, can be dissolved into again in urban afforestation.
In addition as shown in Figure 4, vertical current sewage ecological treatment system flow process is short, and processing unit is few and concentrated, and treatment unit and installed capacity are significantly less than conventional treatment process, and simply, management maintenance personnel can significantly reduce for operational management, maintenance.Owing to managing simply, number of devices is few, strong shock resistance, is applicable to various scale urban wastewater treatment.Major equipment-biochemistry group locking device can carry out in water filling situation installing, changing in system, after vertical current sewage ecological treatment system one-stage completion, can according to the change of urban development needs and sewage quantity, be assembled into the treatment facility of random scale, make treatment facility possess stronger handiness, be applicable to big or middle scale urban wastewater treatment.
In sum, vertical current sewage ecological treatment system provided by the invention is comparatively thorough to the process of sump pump, without biochemical excess sludge discharge in system, can all cancel treatment facility numerous and jumbled needed for excess sludge standard practice and structures, not only reduce engineering initial cost and run processing cost, also completely avoid foul smell etc. that sludge handling process produces to the impact of environment and the secondary transferring of pollutent simultaneously, solve in restriction sewage treatment process the difficulties implementing sludge reduction, innoxious and stabilization preferably.Meanwhile, native system is placed in the position of the depth of water less than 6.5 meters completely mud district 101, by the biological deodorizing of cycling stream biofilm reactor in water seal, water and the natural purification of water surface biological floating island 40, realizes the foul smell zero release of whole Sewage treatment systems.In sewage, majority of organic pollutants and excess sludge are removed by vertical current sewage ecological treatment system anaerobic treatment, this its flow process for the treatment of process pattern is shorter, do not need consideration that specific resistance to filtration system, deodoration system are set, and not needing the Steel Concrete water treatment building of the large scale of construction and larger equipment installed capacity, this process synthesis observable index traditional technology is low by about 30% for this reason.Due to its longer hydraulic detention time of vertical current sewage ecological treatment system and lower BOD loading, sludge loading, treatment system can be made to have stronger capacity of resisting impact load, to influent quality change, there is stronger adaptive faculty.Darker available depth can reduce system exposure surface-area in an atmosphere, and reduce the loss of sewage surface heat in system in winter, water temperature change is less, thus reduces the impact of winter temperature reduction on processing efficiency.The peculiar structure of vertical current sewage ecological treatment system; the anaerobic zone 102 that easily affects by temperature, dissolved oxygen etc. and oxygen-starved area 103 is made to be positioned at the below of aerobic zone 104; due to the provide protection of aerobic zone 104, make anaerobic zone 102 and oxygen-starved area 103 be not substantially bullied gentle atmospheric ozone impact maintain steady running.
This vertical current sewage ecological treatment system is the ecosystem be made up of bacterium, algae, microfauna (protozoon and metazoan), waterplant and other hydrocoles.Its food chain (net) more than the complex process such as oxidation ditch, active sludge, catalytic oxidation, MBR, BAF, charcoal (BAC) many.According to the principle of self purification of water body, vertical current sewage ecological treatment system has stronger removal ability to hardly degraded organic substance, thus reduces the healthy and safe risk of reusing sewage.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a vertical current sewage ecological treatment system, is characterized in that: comprise pond body, the first floatation type biofilm reactor and the second floatation type biofilm reactor, described pond body comprise arrange from bottom to top mud district, anaerobic zone, oxygen-starved area and aerobic zone; The two ends up and down of described first floatation type biofilm reactor and the two ends up and down of the second floatation type biofilm reactor are uncovered, the quantity of described first floatation type biofilm reactor is some, the quantity of described second floatation type biofilm reactor is some, described first floatation type biofilm reactor and the second floatation type biofilm reactor are all located in the body of described pond, and described first floatation type biofilm reactor is located at the front of described second floatation type biofilm reactor, for realizing, multiple-stage treatment is carried out to sewage; The sidewall in described Chi Ti mud district is provided with multiple water-in, described water inlet connects water inlet pipe, multiple described water inlet pipe respectively with the bottom one_to_one corresponding of described first floatation type biofilm reactor and the second floatation type biofilm reactor, circulate up and down inside and outside described first floatation type biofilm reactor and the second floatation type biofilm reactor for realizing sewage; The rear end of described pond body is also provided with water outlet, for being discharged by the sewage after process.
2. vertical current sewage ecological treatment system according to claim 1, it is characterized in that: the inside of described first floatation type biofilm reactor is provided with biologic packing material and the first floatation type aerator, is provided with biologic packing material and the second floatation type aerator in described second floatation type biofilm reactor.
3. vertical current sewage ecological treatment system according to claim 1, it is characterized in that: be also provided with in the body of described pond and cut off under water, the described quantity cut off under water is several, cut off parallel and interval described in several under water to arrange, described pond body is divided into multi-stage sewage treatment zone, adjacent two are cut off under water respectively be provided with gap between two sidewalls of described pond body, adjacent two-stage sewage diposal area is communicated with by gap, and multistage described sewage diposal area and described gap form S shape water stream channel.
4. vertical current sewage ecological treatment system according to claim 3, it is characterized in that: described sewage diposal area comprises from front several first treatment zones then arranged and several second treatment zones, be provided with several the first floatation type cycling stream biofilm reactors in each described first treatment zone, in each described second treatment zone, be provided with several the second floatation type cycling stream biofilm reactors.
5. vertical current sewage ecological treatment system according to claim 4, it is characterized in that: described sewage diposal area also comprises several advanced treatment districts, described advanced treatment district is located at the rear of described second treatment zone, and described first treatment zone and the second treatment zone are only located in described mud district, anaerobic zone, oxygen-starved area and aerobic zone.
6. vertical current sewage ecological treatment system according to claim 5, is characterized in that: described first treatment zone and described second treatment zone are equipped with biological floating island, and described biological floating island swims on the water surface; Described advanced treatment district is provided with floating living filter bed, and described floating living filter bed swims on the water surface.
7. vertical current sewage ecological treatment system according to claim 5, it is characterized in that: described sewage diposal area also comprises disinfection reactions district, described disinfection reactions district is located at the rear in described advanced treatment district, is provided with sterilizing agent throwing mechanism and water flow scale tank in described disinfection reactions district.
8. vertical current sewage ecological treatment system according to claim 4, it is characterized in that: the top in described mud district is provided with return line, the water-in of described return line is located at the second treatment zone of rearmost end, the water outlet of described return line is located at the first treatment zone foremost, and the water-in of described return line is connected with reflux pump.
9. vertical current sewage ecological treatment system according to claim 1, is characterized in that: multiple described water-in is all located at the middle part of the sidewall in described mud district.
10. vertical current sewage ecological treatment system according to claim 1, is characterized in that: described pond body adopts geomembrane anti-seepage process.
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| CN110078297A (en) * | 2019-04-02 | 2019-08-02 | 浦华环保有限公司 | Ecological wastewater treatment system and method |
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