CN203474579U - Rural sewage treatment device with enhanced denitrification and phosphorous removal functions - Google Patents
Rural sewage treatment device with enhanced denitrification and phosphorous removal functions Download PDFInfo
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- CN203474579U CN203474579U CN201320265028.9U CN201320265028U CN203474579U CN 203474579 U CN203474579 U CN 203474579U CN 201320265028 U CN201320265028 U CN 201320265028U CN 203474579 U CN203474579 U CN 203474579U
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Abstract
The utility model discloses a rural sewage treatment device with enhanced denitrification and phosphorous removal functions. The sewage treatment device consists of a body treatment facility, an aerating and flushing system, a sludge discharge system and a sewage reflux system, wherein the body treatment facility is formed by connecting an inclined-tube sedimentation tank, a reflux tank, an anoxic reaction tank, an aerobic reaction tank, a buffer tank, a phosphorous removal reaction tank and a bleaching deodorizing reaction tank; corn cob cores are filed in the anoxic reaction tank; a spherical lightweight porous biological filter material is filled in the aerobic reaction tank; by virtue of aerobic heterotrophic bacteria attached and grown on the spherical lightweight porous biological filter material, organic pollutants in sewage can be removed under aerobic conditions, and ammonia nitrogen can be oxidized into nitrates; sub-alkaline sustained release phosphorus removal filter material is filled in the phosphorous removal reaction tank, so that phosphate anions in water can be removed. The device is small in construction scale, low in operating cost, and free from any additional chemical; most of organic substances in rural domestic sewage can be decomposed; the removal of nitrogen and phosphorous is enhanced; the treated effluent reaches emission and recycling standards.
Description
Technical field
The utility model belongs to sewage treatment area, is specifically related to a kind of villages and small towns waste disposal plant of intensified denitrification and dephosphorization function, and this waste disposal plant can be by the sanitary sewage disposal of villages and small towns discharge to qualified discharge or reuse requirement.
Background technology
Villages and small towns population inhabitation distributes wide, sparsely populated, mostly there is no water exhaust system, and rainwater and sewage all drain into water body nearby along road ditch, road surface, nature or artificial simple and easy irrigation canals and ditches.In the sewage of villages and small towns, contain a large amount of organic pollutants, nitrogen, phosphorus etc., the concentration of these pollutents is far above the Pollutant levels in municipal effluent, if unprocessed direct discharge easily causes the eutrophication pollution of villages and small towns periphery underground water and surface water, and these underground water and earth surface water source villagers' drinking water source often, the water source of pollution has serious harm to villager's health.
Can be applicable at present the organic pollutant that technology that domestic sewage in rural areas by using administers mainly take in degradation of sewage is major objective, substantially be divided into two classes: the first kind is ecological treatment system, the nitrogen, the phosphorus that utilize that soil filters, plant absorbs and microorganism decomposes to come degradation of contaminant and be accompanied with certain function are removed, but ecological treatment system floor space is large, climate impact is large, sense organ is poor, therefore limited its large-scale application; Equations of The Second Kind is to carry out summary according to urban sewage treatment process, mainly for the organism in sewage, adopt microbial augmentation degraded, and by microbial assimilation, nitrogen, phosphorus are had to certain removal in the process of degradation of organic substances, as conventional activated sludge process, contact oxidation method, blodisc and SBR method etc., though this class treatment process treatment effect is better, but investment is large, operational management is complicated, running cost is high, need experienced special messenger's operation, is not too applicable to the application of present situation rural area.
Summary of the invention
The purpose of this utility model is to provide a kind of waste disposal plant that the sanitary sewage disposal of villages and small towns discharges to qualified discharge or reuse can be required, this waste disposal plant is except the organic pollutant in sewage has good degradation effect, there is good denitrogenation, phosphorus removal functional simultaneously, and take up an area little, reduced investment, operation cost is low, and adapts to the drainage character in villages and small towns.
The villages and small towns waste disposal plant of the utility model intensified denitrification and dephosphorization function is design like this: described villages and small towns waste disposal plant is by body treatment facility, aeration and rinse-system, and mud removal system, sewage backflow system form.Body treatment facility is connected to form by tube settler, backflash, hypoxia response pond, aerobic reaction pond, dashpot, dephosphorization reaction tank and decolouring and deodorizing reaction tank.The inside of described tube settler, hypoxia response pond, aerobic reaction pond, dephosphorization reaction tank, decolouring and deodorizing reaction tank is divided into two portions by dividing plate, and left side is water distributing area, and right side is reaction zone; It is bucket-shaped that the bottom, pond of tube settler, hypoxia response pond, aerobic reaction pond, dephosphorization reaction tank, decolouring and deodorizing reaction tank is all cone, for the mud of settlement on storage.
Aeration and rinse-system are comprised of gas blower, air main, air arm, regulated valve, air pocket scatterer, small bubbles scatterer.Mud removal system is comprised of sludge pump, mud main, mud arm, sludge conditioning valve.Sewage backflow system is comprised of reflux water pump and recirculation water pipeline.
Tube settler, backflash, hypoxia response pond, aerobic reaction pond, dashpot, dephosphorization reaction tank, decolouring and deodorizing reaction tank are linked in sequence, and are connected dashpot and backflash with reflux pump by return line.
The spherical light porous biofilter material particle diameter in aerobic reaction pond is 20～30mm, and the aperture of filter screen of its support supporting web plate is 15mm.
Micro-alkali slowly-releasing dephosphorization particle diameter of filter medium in dephosphorization reaction tank is 25mm, and the aperture of filter screen of its support supporting web plate is 15mm.
Tube settler is provided with inclined tube in reaction zone, to increase settling area; The reaction zone in hypoxia response pond is provided with from bottom to top: air pocket scatterer, support support web plate, corncob cellulose, anti-floating and support web plate, pebbles; The reaction zone in aerobic reaction pond is provided with from bottom to top: small bubbles scatterer, support support web plate, spherical light porous biofilter material, anti-floating and support web plate, Wingdale; The reaction zone of dephosphorization reaction tank is provided with from bottom to top: air pocket scatterer, support support web plate, micro-alkali slowly-releasing dephosphorization filtrate; The reaction zone of decolouring and deodorizing reaction tank is provided with from bottom to top: support supports web plate, granulated active carbon.
Advantage of the present utility model and beneficial effect are: (1) this waste disposal plant has deep purifying ability to villages and small towns organic sewage, have strengthening simultaneously and remove the ability of nitrogen, phosphorus, the water outlet after processing can reach the standard of surface water the 3rd class water of national regulation; (2) the processing material using belongs to natural material substantially, comprise corncob cellulose, pebbles, Wingdale, gac etc., spherical light porous biofilter material used and micro-alkali slowly-releasing dephosphorization filtrate are all also to be formed by natural harmless materials processing, can not cause secondary pollution, whole technological process does not need additionally to add any pharmaceutical chemicals; (3) this device be mainly used in construction scale little take the sanitary sewage disposal that village or villages and small towns are unit, construction period and microbial acclimation time are short, process operation is stable, simple and convenient management, standing charges are low.
Accompanying drawing explanation
Fig. 1 is the villages and small towns waste disposal plant structural representation of the utility model intensified denitrification and dephosphorization function.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
The villages and small towns waste disposal plant of the utility model intensified denitrification and dephosphorization function is by body treatment facility, aeration and rinse-system, and mud removal system, sewage backflow system form.Body treatment facility is connected to form by tube settler A, hypoxia response pond B, aerobic reaction pond C, dephosphorization reaction tank D, decolouring and deodorizing reaction tank E, backflash F and dashpot G.Described A, B, C, D, E inside are divided into two portions by dividing plate, and left side is water distributing area, and right side is reaction zone; Bottom A, B, C, D, E pond, be all cone bucket-shaped, for the mud of settlement on storage.Tube settler A is provided with inclined tube 1 in reaction zone, to increase settling area; B reaction zone, hypoxia response pond is provided with from bottom to top: air pocket scatterer 16, support support web plate 28, corncob cellulose 3, anti-floating and support web plate 29, pebbles 2; C reaction zone, aerobic reaction pond is provided with from bottom to top: small bubbles scatterer 17, support support web plate 28, spherical light porous biofilter material 5, anti-floating and support web plate 29, Wingdale 4; Dephosphorization reaction tank D reaction zone is provided with from bottom to top: air pocket scatterer 16, support support web plate 28, micro-alkali slowly-releasing dephosphorization filtrate 6; Decolouring and deodorizing reaction tank E reaction zone is provided with from bottom to top: support supports web plate 28, granulated active carbon 7.
Aeration and rinse-system are comprised of gas blower 23, air main 24, air arm (32,33,34), regulated valve (19,20,21), air pocket scatterer 16, small bubbles scatterer 17.
Mud removal system is comprised of sludge pump 22, mud main 27, mud arm (8,9,10,11,37), sludge conditioning valve (12,13,14,15,18).
Sewage backflow system is comprised of reflux water pump 25 and recirculation water pipeline 26.
Tube settler, backflash, hypoxia response pond, aerobic reaction pond, dashpot, dephosphorization reaction tank, decolouring and deodorizing reaction tank are linked in sequence, and are connected dashpot and backflash with reflux pump by return line.
The spherical light porous biofilter material particle diameter in aerobic reaction pond is 20～30mm, and the aperture of filter screen of its support supporting web plate is 15mm.
Micro-alkali slowly-releasing dephosphorization particle diameter of filter medium in dephosphorization reaction tank is 25mm, and the aperture of filter screen of its support supporting web plate is 15mm.
The technological process of the villages and small towns waste disposal plant of the utility model intensified denitrification and dephosphorization function is:
1, sewage enters tube settler A by sewage water inlet pipe 35 and through distributing flue 36, by natural subsidence effect, most suspended substances is deposited in the pond base cone bucket of tube settler A and forms mud, under anoxia condition, there is anaerobic hydrolysis in the solid-state organism being deposited in the mud at the bottom of pond, resolve into dissolved organic matter, larger molecular organics also can resolve into small organic molecule, has improved the biodegradability of sewage and has made sludge reduction.
2, the water outlet of tube settler A is overflowed and is entered backflash F by top, and the aerobic reaction pond C being refluxed by backflow water pump 25 also enters backflash F containing the water outlet of nitrate, after two strands of water fully mix in backflash F, flows into hypoxia response pond B; In the B of hypoxia response pond, be filled with corncob cellulose 3; Corncob cellulose 3 has very large specific surface area, can be used as the carrier of attached growth of microorganisms, and be immersed in the solid-state carbon source that the organic composition in the corncob cellulose 3 in sewage provides good microorganism denitrification to use, the anoxic microorganism of apposition growth on corncob cellulose 3 is mainly denitrifying bacterium, organism in its utilization water inlet and the solid-state carbon source in corncob cellulose 3, nitrate reduction in the aerobic reaction pond C water outlet of 25 backflows is become to nitrogen and overflows from water, played the object of removing nitrogen in sewage.The effect of the pebbles 2 that anti-floating and support web plate 29 tops are loaded is the materials that tamp as corncob cellulose 3, prevent that corncob cellulose 3 is because the effect floating of buoyancy runs off, play simultaneously and hold back corncob cellulose fragment and outflow with water effect, to guarantee enough solid-state carbon sources.Prolongation along with working time, on corncob cellulose 3, the microbial film of apposition growth is because metabolism is constantly bred, constantly thicken, increased the resistance of corncob cellulose bed, thereby water amount is reduced, so need regularly corncob cellulose bed to be rinsed, in the time of need to rinsing, open gas blower 23 and regulated valve 19, pressurized air is delivered to support by air main 24 and air arm 32 by air pocket scatterer 16 and is supported web plate 28 bottoms, corncob cellulose is carried out to air turbulence flushing, the air stream shear forces of rinsing makes the aging biofilm detachment in top layer, the microbial film coming off enters aerobic reaction pond C with current and is deposited in its conical bottom storage bucket.
3, the processing water outlet of hypoxia response pond B is carried out aerobic treatment from flowing into aerobic reaction pond C.In the C of aerobic reaction pond, be filled with spherical light porous biofilter material 5; Spherical light porous biofilter material 5 surfaces are crude and have larger specific surface area, on it apposition growth aerobic heterotrophic bacterium; The small bubbles scatterer 17 that install 5 bottoms successively feeds pressurized air by gas blower 23, air main 24, air arm 33 in water, to provide aerobic heterotrophic bacterium to carry out the required oxygen of aerobic respiration effect, aerobic heterotrophic bacterium is decomposed the organic pollutant in sewage, ammonia nitrogen and transform under aerobic condition, organic pollutant finally resolves into the inorganicss such as carbonic acid gas and water and is removed, and ammonia nitrogen is oxidized to nitrate; On spherical light porous biofilter material 5 top anti-floatings and support web plate 29, load Wingdale 4, in order to increase basicity and the calcium ion concn in water, thereby make phosphate anion in water form calcium phosphate crystal and play the object of dephosphorization, certainly limited phosphate radical in sewage thoroughly can not the removal of height that this dephosphorization process is loaded due to Wingdale 4, so remaining phosphate radical must thoroughly be removed in follow-up dephosphorization reaction tank D.
4, sewage is after aerobic reaction pond C aerobe is processed, organic pollutant in sewage and nitrogen have obtained decomposing and transforming, organic pollutant and nitrogen content in the C water outlet of aerobic reaction pond have met emission request, yet the total phosphorus in water outlet still can not meet emission standard requirement, need enter in dephosphorization reaction tank D and thoroughly remove.In dephosphorization reaction tank D, support supports web plate 28 tops and is filled with micro-alkali slowly-releasing dephosphorization filtrate 6, and bottom is provided with air pocket scatterer 16; Micro-alkali slowly-releasing dephosphorization filtrate 6(is shown in the inventor's patent ZL201010272692.7) be a kind of porous material with alkali slow-release function, can continue to water body stripping basicity and calcium ion at material surface and inside, and provide huge adsorption surface area for Phosphate Sorption hydrochlorate.When the effluent stream that contains phosphorus is during through micro-alkali slowly-releasing dephosphorization filtrate 6, phosphate anion in water under micro-alkali slowly-releasing dephosphorization filtrate 6 micro-alkali environment in top layer with water in calcium ion form calcium phosphate powder crystallization and be attached to micro-alkali slowly-releasing dephosphorization filtrate 6 surfaces, thereby the phosphate radical in sewage is removed, played dephosphorization object.Along with constantly carrying out of this dephosphorization process, the calcium phosphate powder crystallization on micro-alkali slowly-releasing dephosphorization filtrate 6 surfaces is more and more, more and more thicker, speed and concentration that Xiang Shuizhong discharges basicity, calcium ion have been limited gradually, affected dephosphorization efficiency by using, now need to start gas blower 23, open regulated valve 21 and feed pressurized air by air pocket scatterer 16 micro-alkali slowly-releasing dephosphorization filtrate 6 is rinsed, the shearing force of rinsing air-flow comes off calcium phosphate powder and flows into decolouring and deodorizing reaction tank E and deposit in its taper bucket with current, the outer row of regularly suction.
5, for making the limpid odorless of final outflow water, the sewage after above-mentioned operation is processed need enter in decolouring and deodorizing reaction tank E decolour, deodorizing processes.In decolouring and deodorizing reaction tank, in reaction zone, be filled with granulated active carbon 7; granulated active carbon 7 has flourishing hole and huge specific surface area; adsorptive power is extremely strong; can effectively remove colourity and stink in water; the water outlet of decolouring and deodorizing reaction tank E, can qualified discharge or reuse through water leg 30 and through rising pipe 31 discharge systems.
6, A, B, C, D, E reaction tank its bottom in operational process all can deposit a certain amount of mud, therefore need regularly to carry out spoil disposal by the suction of mud removal system.When technique is normally moved, sludge conditioning valve 12,13,14,15,18 is all in closing condition; During spoil disposal, open the sludge conditioning valve in corresponding sludge bucket, and open sludge pump 22, aspirate spoil disposal.
Claims (4)
1. a villages and small towns waste disposal plant for intensified denitrification and dephosphorization function, is characterized in that described waste disposal plant is by body treatment facility, aeration and rinse-system, and mud removal system, sewage backflow system form; Described body treatment facility is connected to form by tube settler, backflash, hypoxia response pond, aerobic reaction pond, dashpot, dephosphorization reaction tank, decolouring and deodorizing reaction tank; Tube settler, hypoxia response pond, aerobic reaction pond, dephosphorization reaction tank, decolouring and deodorizing reaction tank are divided into water distributing area and reaction zone two portions by dividing plate by reaction tank, and bottom is equipped with and is the bucket-shaped storage bucket of cone; Tube settler is provided with inclined tube in reaction zone; Reaction zone, hypoxia response pond is provided with from bottom to top: air pocket scatterer, support support web plate, corncob cellulose, anti-floating and support web plate, pebbles; Reaction zone, aerobic reaction pond is provided with from bottom to top: small bubbles scatterer, support support web plate, spherical light porous biofilter material, anti-floating and support web plate, Wingdale; Dephosphorization reaction tank reaction zone is provided with from bottom to top: air pocket scatterer, support support web plate, micro-alkali slowly-releasing dephosphorization filtrate; Decolouring and deodorizing reaction tank reaction zone is provided with from bottom to top: support supports web plate, granulated active carbon;
Aeration and rinse-system are comprised of gas blower, air main, air arm, regulated valve, air pocket scatterer, small bubbles scatterer;
Mud removal system is comprised of sludge pump, mud main, mud arm, sludge conditioning valve;
Sewage backflow system is comprised of reflux water pump and recirculation water pipeline.
2. the villages and small towns waste disposal plant of a kind of intensified denitrification and dephosphorization function according to claim 1, it is characterized in that tube settler, backflash, hypoxia response pond, aerobic reaction pond, dashpot, dephosphorization reaction tank, decolouring and deodorizing reaction tank are linked in sequence, and be connected dashpot and backflash with reflux pump by return line.
3. the villages and small towns waste disposal plant of a kind of intensified denitrification and dephosphorization function according to claim 1, is characterized in that the spherical light porous biofilter material particle diameter in aerobic reaction pond is 20～30mm, and the aperture of filter screen of its support supporting web plate is 15mm.
4. the villages and small towns waste disposal plant of a kind of intensified denitrification and dephosphorization function according to claim 1, is characterized in that the micro-alkali slowly-releasing dephosphorization particle diameter of filter medium in dephosphorization reaction tank is 25mm, and the aperture of filter screen of its support supporting web plate is 15mm.
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| CN201320265028.9U CN203474579U (en) | 2013-05-16 | 2013-05-16 | Rural sewage treatment device with enhanced denitrification and phosphorous removal functions |
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| CN201320265028.9U CN203474579U (en) | 2013-05-16 | 2013-05-16 | Rural sewage treatment device with enhanced denitrification and phosphorous removal functions |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103979750A (en) * | 2014-06-06 | 2014-08-13 | 瀚蓝环境股份有限公司 | Reactor for sewage treatment and phosphorus recovery and method for recovering phosphorus by using same |
| CN114873829A (en) * | 2021-02-05 | 2022-08-09 | 北京中科润金环保工程股份有限公司 | Label lifting equipment and system suitable for distributed domestic sewage treatment of villages and small towns |
-
2013
- 2013-05-16 CN CN201320265028.9U patent/CN203474579U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103979750A (en) * | 2014-06-06 | 2014-08-13 | 瀚蓝环境股份有限公司 | Reactor for sewage treatment and phosphorus recovery and method for recovering phosphorus by using same |
| CN114873829A (en) * | 2021-02-05 | 2022-08-09 | 北京中科润金环保工程股份有限公司 | Label lifting equipment and system suitable for distributed domestic sewage treatment of villages and small towns |
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Granted publication date: 20140312 |