CN101269874B - Layered geology mineral filter chamber sewage treatment system - Google Patents
Layered geology mineral filter chamber sewage treatment system Download PDFInfo
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- CN101269874B CN101269874B CN2008100474981A CN200810047498A CN101269874B CN 101269874 B CN101269874 B CN 101269874B CN 2008100474981 A CN2008100474981 A CN 2008100474981A CN 200810047498 A CN200810047498 A CN 200810047498A CN 101269874 B CN101269874 B CN 101269874B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention relates to a layer geological mineral composition filter pool system, which comprises a grizzly screen pool, a preliminary sedimentation tank, a service reservoir and a filter pool. The filter pool is a layer geological mineral composition filter pool. The layer geological mineral composition filter has the advantages of simple operation, convenient management, small investment, low energy consumption, low operation cost and good yielding water quality with the general sewage soil treatment technology, and also has the advantages of small occupation area, high water power load, easy restoration after blocking, and simple back purge, etc., thereby being favorable to wide popularization and application. Compared with the general sewage soil treatment technology, the water power load of the filter system is greatly improved to 2.5-3.0m/d (m<3>/m<2>.d), the system blocking phenomenon is greatly reduced, a back purge system can be started once blocking, so as to cause the system to be recovered to the best treatment state quickly, thereby solving the problem that the system is wasted because of the blocking in the general sewage soil treatment technology.
Description
Technical field
The present invention relates to the sanitary sewage disposal technical field, is a kind of biotechnology and the efficient sanitary sewage disposal technology that geology (ground water cleaning) technology combines, and is particularly suitable for applying in vast cities and towns.
Background technology
Along with the raising of sharp increase, rural urbanization and the living standards of the people of urban population, water requirement and total water requirements constantly increase per capita, and China's town domestic sewage quantity discharged also increases thereupon, and the proportion that accounts in wastewater emission amount is greater than trade effluent.With 2006 be example, national wastewater emission amount is 536.8 hundred million tons, increases by 2.3% than the last year, wherein, 240.2 hundred million tons of discharged volume of industrial waste water account for 44.7% of wastewater emission amount, reduce 1.1% than the last year; 296.6 hundred million tons of town domestic sewage quantity dischargeds account for 55.3% of wastewater emission amount, increase by 5.8% than the last year.According to estimates, by 2010, China's city domestic sewage total emission volumn was 1,050 hundred million tons, and wherein the villages and small towns quantity of wastewater effluent can reach 27,000,000,000 tons.The emphasis of China's water pollution control has been main control from industrial point source, is converted to the control based on city domestic sewage gradually.
According to " the national urban environmental management in 2006 and the comprehensive improvement annual report " of the up-to-date issue of State Environmental Protection Administration, China's city domestic sewage centralized treatment rate only is 42.55% on average, and it is 0 that 200 city domestic sewage centralizeds treatment rate are wherein arranged.Although this mainly is because city domestic sewage two stage biological treatment technology development is fairly perfect, the general investment in municipal sewage plant is higher, and in that to build up the back working cost bigger, general in samll cities and towns be difficult to burden.What is more, and some sewage works that built up also can be because of cash-starved and can not normal operation.
In addition, polluted water land treatment technology (comprising artificial rapid infiltration system) is considered to solve suitable, the most reliable approach of low discharge sanitary sewages such as small and medium-sized cities, cities and towns, rural area as novel sewage disposal technology.Advantages such as that this technology has is simple to operate, convenient management, investment is little, energy consumption is low, working cost is low and effluent quality is good, but along with the application time increases, such technology exposes some serious defectives and fatal problem.
The main drawback of conventional polluted water land treatment technology has:
(1) polluted water land treatment system floor space is big.Based on China's national situation, to have a large population and a few land, land use expense height is difficult to promote the use of on a large scale;
(2) polluted water land treatment system hydraulic load is low.Dwell time of sewage is long, is difficult to satisfy a large amount of requirements of handling, and is not suitable for big-and-middle-sized water treatment system, is not suitable for high-concentration sewage;
(3) the polluted water land treatment system is easily stopped up, and this is the fatal problem of land treatment system, in case block system will be paralysed fully, back flushing is difficulty very, and cost and operation easier are big, and required time of recovery is long, is difficult to long-time continual and steady operation.
Above-mentioned shortcoming is seriously restricting the polluted water land treatment technology the applying of China, and makes it be difficult to satisfy the requirement that the current town domestic sewage of China is handled.
Summary of the invention
The objective of the invention is to propose a kind of new domestic sewage processing system---layered geology mineral filter chamber sewage treatment system, to solve the problem that city domestic sewage two stage biological treatment technology and conventional polluted water land treatment technology exist.This system has advantages such as investment is little, working cost is low, effluent quality good, floor space is less, hydraulic load is high, back flushing is simple, the easy recovery in obstruction back.
The objective of the invention is to be achieved through the following technical solutions: a kind of layered geology mineral filter chamber system, comprise grating tank, preliminary sedimentation tank, distribution reservoir and filter tank, described filter tank is a layered geology mineral filter chamber.
Layered geology mineral filter chamber is divided into and is four layers (every layer height has no special requirements, consider that optimum handling effect and returns of investment are 60cm-70cm than suggestion), the trilaminar filtrate in top is grouan weathering mineral sand, every layer of top in three layers on the top all is the open state that communicates with atmosphere, and water port and back flushing mouth are all laid in every layer of bottom; The filtrate of bottom one deck is by limestone particle and marble granulometric composition, and this layer seals and be provided with water-in and water outlet, and the water-in of this layer is connected by the water port of pipeline with the 3rd metafiltration pond.
The trilaminar grouan weathering in top mineral sand grains directly is 2-4mm, and every layer filtrate thickness is 50cm-60cm.
Water pipeline, the shower nozzle that the water pipeline water outlet is connected with are laid in three layers of every metafiltration material surface, top; Top is made up of the upper, middle and lower for three layers, and the water pipeline water-in on upper strata connects the water outlet of distribution reservoir, and the water pipeline water-in of middle level and lower floor is connected the water port in upper strata and middle level respectively by its water pipeline.
Bottom one deck filtrate thickness is 60cm-70cm (being advisable to be full state), and filtrate is by limestone particle and marble granulometric composition, and volume ratio is 1: 1, and both are 4-5mm by particle diameter.
Water-in of bottom one deck and the two ends that water outlet lays respectively at this layer top.
Layered geology mineral filter chamber of the present invention system also comprises enhancement type dephosphorization supplementary unit, and the water-in of enhancement type dephosphorization supplementary unit connects the water outlet of the bottom one deck of layered geology mineral filter chamber; Described enhancement type dephosphorization supplementary unit is to mix the seepage channel of laying by limestone particle and marble particle by 1: 1 volume ratio, and limestone particle and marble particulate granular size are 1-2mm.
The principle that the present invention handles sanitary sewage is as follows:
Because but the sanitary sewage biochemical activity is higher, geology mineral filter chamber is in operational process, and the microorganism biofilm of can growing in the hole of geology mineral filtrate has higher specific surface area, thereby helps the degraded of pollutent in the sewage.
Held back by the microbial film in the hole in the process that organic pollutant oozes under sewage, and be degraded as the required carbon source of microorganism growth, thus the COD in the removal sewage.
In the process that nitrogen oozes under sewage, because geology mineral filter chamber is pressed the operation scheme of alternation of wetting and drying (as adopting the intermittent loading pattern, the water inlet, dried hocketing falls, water inlet in one day 24 hours 3-4 time, each water inlet 3-4 hour, fell to doing 3-4 hour), be that aerobic conditions and oxygen free condition form a treatment system in three layers on the top in filter tank; Under aerobic conditions, the ammonia-state nitrogen in the sewage issues the caliche reaction in the effect of nitrifier, is converted into nitric nitrogen, and ammonia nitrogen reduces in the sewage thereby make; Under oxygen free condition, anti-nitration reaction takes place in the nitric nitrogen in the sewage under the effect of denitrifying bacteria, be converted into nitrogen, thereby the total nitrogen in the sewage is reduced.But the time that oxygen free condition exists in the three first layers in filter tank is shorter, and the hydraulic detention time of sewage is shorter, makes denitrification incomplete.The effect of the last one deck in filter tank at this moment reveals.Because last one deck seals and be full water state, whole layer all is under the anaerobic condition, helps fully carrying out of denitrification, thereby improves the clearance of nitrogen.In addition, the organic pollutant in the sewage also can be used as denitrifying organic carbon source and is further consumed, and improves the clearance of COD.
The removal principle of phosphorus is, in three layers on the top of geology mineral filter chamber, the microbiological degradation organophosphorus forms inorganic phosphorus, and these three layers are not high to tp removal rate.After sewage enters the 4th layer of reduction filtering layer, under the adsorption of the filtrate of limestone particle and marble granulometric composition, remove a part of phosphorus, simultaneously with filtrate in lime carbonate react, generate indissoluble thing precipitation, thereby improved the clearance of phosphor in sewage.
Effect as SS etc., is removed also clearly by other contamination indexs under the effect of this system.SS in the sewage can reduce about 50% through preliminary sedimentation tank, handles through the first layer of geology mineral filter chamber just can reach national grade one discharge standard.
In addition, grouan weathering mineral sand main component of the present invention is quartz and feldspar, is the indissoluble thing, and the grouan mineral sand after weathering all contains zeolite, and zeolite is a kind of general name of rock physics eigenstate, and feature is to be vesicular.Because the geology mineral filtrate that layered geology mineral filter chamber is every layer is all thinner, ooze under the sewage relatively easily, the hydraulic load of system is higher; When layered geology mineral filter chamber produce to stop up sign, same because filtrate is thinner, and the back flushing meeting becomes easily, operate simple relatively, so this system steady running for a long time.
Layered geology mineral filter chamber sewage treatment system disclosed by the invention has that conventional polluted water land treatment technology is simple to operate, convenient management, investment is little, energy consumption is low, working cost is low and effluent quality is good advantage, have advantages such as floor space is less, hydraulic load is high, stop up easily recovery of back, back flushing is simple simultaneously, help applying on a large scale.
What maximum of the present invention was different from conventional polluted water land treatment technology is that institute's materials used has significantly different with structure.The present invention handles hydraulic load and greatly improves, and is 2.5-3.0m/d (m
3/ m
2D), the system jams phenomenon greatly reduces, in case stop up then can start back-purge system, makes system's fast quick-recovery optimum handling state, has solved the problem of conventional polluted water land treatment technology because of the obstruction discarding system.
Description of drawings
Fig. 1 is a layered geology mineral filter chamber sewage treatment system synoptic diagram disclosed by the invention;
Fig. 2 is the layered geology mineral filter chamber structural representation.
Embodiment
Referring to Fig. 1, the present invention is made of grating tank 1, preliminary sedimentation tank 2, distribution reservoir 4, layered geology mineral filter chamber 5 and enhancement type dephosphorization supplementary unit 6.
Described grating tank, preliminary sedimentation tank and distribution reservoir can adopt with traditional cities sewage work in identical design.
As shown in Figure 2, it is four layers (the first layer filter tank of promptly arranging from top to bottom, second layer filter tank, the 3rd metafiltration pond and the 4th metafiltration ponds) that layered geology mineral filter chamber is divided into, every layer height is 60cm, above trilaminar filtrate be the geology mineral material---grouan weathering mineral sand 7, wherein contain multiple indissoluble mineral and have the zeolite of water purification effect, every layer of top all is open state, so that air admission forms aerobic environment.The 4th layer filtrate is made up of by 1: 1 volume ratio limestone particle and marble particle for mixing geology mineral filtrate 8.
Above three layers of geology mineral filter chamber structure identical, every layer all is provided with water port 9 (back flushing mouth 10 can be connected with water port 9 with back flushing mouth 10 in the bottom, by being arranged on the valve control draining or the back flushing of back flushing pipeline and lower floor's inlet channel), sewage in the distribution reservoir enters the first layer filter tank through the water pipeline 11 of the first layer with shower nozzle 12 water distributions and handles, discharge the water pipeline and the shower nozzle that enter the second layer by water port and carry out water distribution, after handle in second layer filter tank, discharge by water port and to enter trilaminar water pipeline and shower nozzle and carry out water distribution and enter the 3rd metafiltration pond and handle.It is 2-4mm grouan weathering mineral sand that particle diameter is filled in above-mentioned three metafiltration ponds, and filtrate thickness is 50cm, and water pipeline and shower nozzle are laid in the filter material layer surface, and institute's sewage of handling all sprays from shower nozzle, with increase oxygen inlet, helps to strengthen the aerobic treatment effect.
The water-in in the 4th metafiltration pond and water port lay respectively at the two ends at this top, metafiltration pond, do not need back flushing, and filtrate thickness is 60cm, are made up of by 1: 1 volume ratio limestone particle and marble particle, and grain diameter is 4-5mm.The sealing of this layer, water inlet is the water outlet in the 3rd metafiltration pond, directly enters the water-in in the 4th metafiltration pond by the water port in the 3rd metafiltration pond, guarantees that this layer is in anaerobic state.This layer water-in and water outlet lay respectively at two ends, top, filter tank.
Described enhancement type dephosphorization supplementary unit is formed by the underground pipeline reconstruction, guaranteeing under the constant situation in aforementioned processing unit, limestone particle and marble particle at provided underground 10m (length) * 2m (wide) * 1m (deeply) are pressed 1: 1 volume ratio mixture seepage channel, the simulated groundwater seepage environment, the mineral grain size is 1-2mm.This passage and layered geology mineral filter chamber below water outlet are connected, and adopt head difference to drive, and make the current spontaneous current through this passage.Should auxiliary mineral seepage channel, can further improve phosphor-removing effect, be suitable for high-concentration phosphorus-containing wastewater (＞5mg/L).Its principle mainly is that carbonate mine (marble and limestone) interacts with phosphorus, forms calcium phosphate indissoluble mineral, thus dephosphorization.This passage is arranged at underground, can be in office idle down place where, shape can non-rule, does not take useful space.
Working process of the present invention is as follows: treatment sewage enters preliminary sedimentation tank 2 through grating tank 1, water precipitation in the preliminary sedimentation tank 2 is after water pump is squeezed into distribution reservoir 4, the water of distribution reservoir 4 enters layered geology mineral filter chamber 5 through rising pipe, and the water of layered geology mineral filter chamber enters enhancement type dephosphorization supplementary unit 6 through rising pipe; Layered geology mineral filter chamber adopts the intermittent loading pattern, dried the hocketing of intaking, fall, and water inlet in a day 24 hours 3-4 time was intake 3-4 hour at every turn, fell to doing 3-4 hour.When water inlet COD concentration is 100-800mg/L, ammonia nitrogen concentration is 10-30mg/L, total phosphorus concentration is 3-5mg/L, when hydraulic load is 2.5-3.0m/d, after the layered geology mineral filter chamber sewage treatment system processing, effluent COD concentration is lower than 30mg/L, and ammonia nitrogen is lower than 5mg/L, total phosphorus is lower than 0.5mg/L, reaches national grade one discharge standard (GB 18918-2002).In case layered geology mineral filter chamber occurs stopping up then starts back-purge system, through the back flushing mouth layered geology mineral filter chamber is carried out back flushing, makes the fast quick-recovery processing power of system, has solved the problem of conventional polluted water land treatment technology because of the obstruction discarding system.
Claims (6)
1. layered geology mineral filter chamber system, comprise grating tank, preliminary sedimentation tank, distribution reservoir and filter tank, it is characterized in that: the filter tank is that the layered geology mineral filter chamber of layered geology mineral filter chamber is divided into is four layers, the trilaminar filtrate in top is grouan weathering mineral sand, every layer of top in three layers on the top all is the open state that communicates with atmosphere, and water port and back flushing mouth are all laid in every layer of bottom; The filtrate of bottom one deck is by limestone particle and marble granulometric composition, and this layer seals and be provided with water-in and water outlet, and the water-in of this layer is connected with trilaminar water port by pipeline.
2. layered geology mineral filter chamber according to claim 1 system is characterized in that: the trilaminar grouan weathering in top mineral sand grains directly is 2-4mm, and every layer filtrate thickness is 50cm-60cm.
3. layered geology mineral filter chamber according to claim 1 and 2 system is characterized in that: water pipeline is laid on three layers of every metafiltration material surface, top, and the water pipeline water outlet is connected with shower nozzle; Top is made up of the upper, middle and lower for three layers, and the water pipeline water-in on upper strata connects the water outlet of distribution reservoir, and the water pipeline water-in of middle level and lower floor is connected the water port in upper strata and middle level respectively by its water pipeline.
4. layered geology mineral filter chamber according to claim 1 and 2 system, it is characterized in that: bottom one deck filtrate thickness is 60cm-70cm, and filtrate is by limestone particle and marble granulometric composition, and volume ratio is 1: 1, and both are 4-5mm by particle diameter.
5. layered geology mineral filter chamber according to claim 4 system, it is characterized in that: water-in of bottom one deck and water outlet lay respectively at the two ends at this layer top.
6. layered geology mineral filter chamber according to claim 4 system, it is characterized in that: the layered geology mineral filter chamber system also comprises enhancement type dephosphorization supplementary unit, and the water-in of enhancement type dephosphorization supplementary unit connects the water outlet of the bottom one deck of layered geology mineral filter chamber; Described enhancement type dephosphorization supplementary unit is to mix the seepage channel of laying by limestone particle and marble particle by 1: 1 volume ratio, and limestone particle and marble particulate granular size are 1-2mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100474981A CN101269874B (en) | 2008-04-29 | 2008-04-29 | Layered geology mineral filter chamber sewage treatment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100474981A CN101269874B (en) | 2008-04-29 | 2008-04-29 | Layered geology mineral filter chamber sewage treatment system |
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| CN101269874A CN101269874A (en) | 2008-09-24 |
| CN101269874B true CN101269874B (en) | 2011-04-13 |
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| CN108640295A (en) * | 2018-05-31 | 2018-10-12 | 中国地质大学（武汉） | A kind of novel waste water purification device |
| CN110143722A (en) * | 2019-05-24 | 2019-08-20 | 中国地质大学（武汉） | A kind of geology mineral filter chamber and filter method handling micro-polluted water |
| CN110372159A (en) * | 2019-08-29 | 2019-10-25 | 河南省海力特环保科技有限公司 | The fixed water distribution system in biofilter |
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Granted publication date: 20110413 Termination date: 20120429 |