CN205368045U - Novel integration wastewater treatment process uses active sand filtration device - Google Patents

Abstract

The utility model discloses an integration wastewater treatment process dedicated active sand filter unit has the sand filtration cell body, and its bottom is tapered space, be equipped with inside filter unit in the sand filter, inside filter unit include the inlet tube, with rivers distributor, quartz sand filter material and the outlet pipe of inlet tube intercommunication, the quartz sand filter material covers the rivers distributor, inside filter unit upper portion is equipped with the washed -out sand device, the washed -out sand device is including stretching into to the center tube of sand filtration cell body bottom, the upper portion cover of center tube is equipped with sand pipe, and center tube and sand pipe's upper end feeds through sand separation of water room, air lift intercommunication sand separation of water room, and sand separation of water room intercommunication has the sparge water outlet pipe. Compact structure saves chemical agent, saves the device space, and the filter effect is good, goes out water stabilization of water quality.

Description

A kind of novel all-in-one sewage treatment process activity sand filtering device

Technical field

This utility model belongs to technical field of water purification, particularly relates to a kind of novel all-in-one sewage treatment process special active sand filtering device.

Background technology

Sanitary sewage includes the various slurries in urban life, sewage and feces etc., it mostly is nontoxic inorganic salts, comparison of ingredients is fixed, mainly contain the Organic substances such as carbohydrate, protein, aminoacid, fat, relatively it is suitable for the growth of antibacterial, virus, and there is certain fertilizer efficiency, can be used to irrigated farmland.Simultaneously, in sanitary sewage, the plant nutrient substance such as nitrogen, phosphorus content is more, easily cause the eutrophication of water body, it is one of the primary pollution source of water body, therefore after sanitary sewage need to being processed and make it up to standard, just can be vented in rivers and lakes, thus overcoming the water pollution because sanitary sewage causes.Nowadays, along with China's urban population quickly increases, cities and towns water requirement is also incremented by therewith, but existing water supply level is more difficult meets requirement.Relevant statistical data shows, the sanitary sewage amount of China city discharge every day per capita is 150 to 400L, if better sanitary sewage being processed and recycling, it becomes possible to the problem alleviating shortage of water resources.Additionally, pipeline network construction investment supporting accordingly and original Sewage Plant reorganization and expansion expense are also very huge, and original sewage treatment plant operating cost is higher with maintenance expense.It is low to there is integration degree in existing integrated sewage treating apparatus, and floor space is big, and the shortcoming such as operating cost is high, poor processing effect, equipment not easy care.The water technology of organics removal mainly has: " coagulation-precipitation-filtration " technology, air stripping method, sterilizing technology, carbon source technology, biologic treating technique, ion exchange technique, membrane separation technique and photo chemistry technology treatment technology etc..These water technologies have been able to make the control of the content of organics in water reach higher index.But the filtering material being currently used for processing various trade effluent, industry water purification, city tap-water, municipal sewage and household pure water, soft water is to make the tradition filtrates such as quartz sand, activated carbon and anthracite, there is the problem into lower aspect in it: voidage is smaller, adsorption time is too short, easily lost efficacy and blocking, it is easier abrasion, only has about 1 year service life.

Chinese patent application 201310087120.5 discloses kind of highly effective synchronous biological denitrogenation dephosphorizing Round Sump device and method anaerobic pond, anoxic pond, Aerobic Pond, sedimentation tank, sewage sludge reflux technique being integrated in one.Wall all it is total between the internal each adjacent reaction tank of this device, including the first order anoxic pond set gradually from front to back, anaerobic pond and second level anoxic pond, in described first order anoxic pond, the right side of anaerobic pond and second level anoxic pond is provided with the distributing channel of gallery type, this distributing channel passes through water inlet pipe respectively to first order anoxic pond, anaerobic pond and the feedwater of second level anoxic pond, in described first order anoxic pond, the left side of anaerobic pond and second level anoxic pond is disposed with sludge-tank from front to back, sedimentation tank and relief area, it is provided with outlet canal on the left of described sedimentation tank, the rear of described relief area and second level anoxic pond is provided with Aerobic Pond.This devices and methods therefor substantially still falls within the AAO of improvement, it is necessary to be separately provided sedimentation tank, and its process route and traditional handicraft are as good as；And owing to its sedimentation tank directly adopts tube settler, very easily cause the phenomenons such as inclined tube blocking when active sludge intermixture enters tube settler, cause running the more problems such as not smooth.

Summary of the invention

For solving the drawbacks described above that prior art exists, the purpose of this utility model is in that to provide the active sand filtering device of a kind of novel all-in-one sewage treatment process, compact conformation, saves chemical agent, saves the device space, good filtration effect, stable effluent quality.

For achieving the above object, this utility model adopts technical scheme: the active sand filtering device of this kind of novel all-in-one sewage treatment process, there is sand filtration cell body, it is characterized in that: for filter sand being had the tapered space of guiding bottom described sand filtration cell body, self-filtering unit it is provided with in described sand filter, self-filtering unit includes water distributor, quartz sand filter media and the outlet pipe that water inlet pipe connects with water inlet pipe, and described quartz sand filter media covers described water distributor；Described self-filtering unit top is provided with sand-washing device, described sand-washing device includes stretching to the central canal bottom sand filtration cell body, the top of described central canal is set with out sandpipe, central canal connects girt-water separation room with the upper end going out sandpipe, air lift connection girt-water separation room, girt-water separation room is communicated with flushing water outlet pipe, described in go out the sand export of sandpipe and be positioned at the upper strata of quartz sand filter media；Described water inlet pipe and outlet pipe are positioned at the top of sand filtration cell body.

Described water distributor is two or more cone-shaped cavities being interconnected, cone-shaped cavity apopore is arranged below.

Described quartz sand filter media is Rare-Earth Magnetic sand modified filter material.

Adopt technique scheme beneficial effect: novel all-in-one sewage treatment process, including pretreatment, hydrolysis acidification, bio-contact oxidation, secondary precipitation, activity sand filtration and external ultrafiltration technology.Wherein, the effect of activity sand filtration is to remove COD, BO, SS in water and colourity etc. further, adopts novel rare-earth magnetic sand modified filter material in active sand filter tank, voidage is big, and adsorption time is long, wear-resistant, organics removal effect is obvious, and the removal efficiency of pollution factor is high.

This activity sand filtering device, former water is entered inside self-filtering unit by water inlet pipe, and upper after water distributor uniform distribution and outer arranges to adverse current by filter material layer.In the process, former water is filtered, and the pollutant load in water reduces；In quartz sand filter media, the content of pollutant increases simultaneously, and the pollutant load of lower floor's filter material layer is higher than upper strata filtrate.The quartz sand filter media of bottom is promoted to the cleaning of girt-water separation room by central canal by the air lift being arranged in sand-washing device under the effect of air compressor machine.Sand grains returns filter bed after cleaning, and will clean produced pollution beyond the region of objective existence row simultaneously, thus realizing filtering continuously；Owing to quartz sand filter media is top-down kinestate in portion in sand filter body, former water being played stirring action, therefore stirring flocculation can complete in sand filter body.In sand filter body, filtrate cleaning in time, can bear higher water inlet pollutant levels.This activity sand filtering device makes coagulation, clarification, filtration be fully completed in same cell body.Filtering and run continuously, it is not necessary to shut down backwash, efficiency is high；Without backwash pump blower fan punching water tank and valve etc.；Integrate coagulating sedimentation and filter, enormously simplify technological process and take up an area space；Operation and maintenance expense is low；Waste water for high SS content does not need pretreatment (water inlet SS is up to 150mg/L)；Compared with conventional sand filtering technique, the chemical agent of 30%-40% can be saved；The device space of 70% can be saved；In-depth filtration, filter bed degree of depth 2000mm；Filter bed loss in head is little, only 0.5m；Adopt single homogeneous filtering material, without grating layer；Filtrate is by continuous wash, and good filtration effect, without first filtrate problem；Stable effluent quality；It is prone to reorganization and expansion.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, specific embodiment of the utility model is described in further detail.

Fig. 1 is the process chart that this utility model uses；

Fig. 2 is the structural representation of activity sand filtering device.

Detailed description of the invention

Novel all-in-one sewage treatment process as shown in Figure 1, including pretreatment, hydrolysis acidification, bio-contact oxidation, secondary precipitation, activity sand filtration and external ultrafiltration technology, wherein,

Pretreatment: sanitary sewage through pipe network centralized collection laggard enter grid canal, in grid canal, mechanical grille is set, the bulky grain foreign material such as the branch in water, foreign material is intercepted, pretreated water enter regulating reservoir, water quality and quantity is adjusted；

Hydrolysis acidification: the boosted pump of regulating reservoir water outlet is lifted into hydrolysis acidification pool and carries out acidification, water is entered bottom hydrolysis acidification district by elevator pump, by water distribution system, is uniformly discharged by water, and water is accumulated from bottom to top, is entered bottom contact-oxidation pool by pipeline self；

Bio-contact oxidation: be provided with filler in contact-oxidation pool, part microorganism is grown on filling surface with biomembranous form set, part be then with cotton-shaped suspension growth in water, air is passed through gas distribution system by external fan, by up aeration bottom contact-oxidation pool, make good use of the Organic substance in the active degradation waste water of oxygen animalcule；

Secondary precipitation: the sewage after bio-contact oxidation purification is by weir plate and pipeline, enter the central tube of secondary sedimentation tank, water makes water slowly settle by the water fender of central tube, make the solid in water and liquid be easily separated, remove solid suspension material contained in contact-oxidation pool water outlet by gravitational settling effect；

Activity sand filtration: in secondary sedimentation tank, the water of clarification enters activity sand filtering device and removes COD, BO, the SS in water and colourity further, activity sand filtration backwash effluent recycling enters regulating reservoir, clear water enters external ultrafiltration technology, and sewage up to standard can be directly discharged into river body.

As shown in Figure 2, the active sand filtering device that this activity sand filtration is special, there is sand filtration cell body 11, for filter sand being had the tapered space 1 of guiding bottom described sand filtration cell body, self-filtering unit it is provided with in described sand filter, self-filtering unit includes water distributor 2, quartz sand filter media 3 and the outlet pipe 8 that water inlet pipe 4 connects with water inlet pipe 4, described quartz sand filter media is Rare-Earth Magnetic sand modified filter material, described quartz sand filter media covers described water distributor, described water distributor is two or more cone-shaped cavities being interconnected, cone-shaped cavity apopore is arranged below.Described self-filtering unit top is provided with sand-washing device, described sand-washing device includes the central canal 12 stretched to bottom sand filtration cell body, the top of described central canal is set with out sandpipe 10, central canal 12 connects girt-water separation room 6 with the upper end going out sandpipe 10, air lift 7 connects girt-water separation room, girt-water separation room is communicated with flushing water outlet pipe 9, described in go out the sand export of sandpipe and be positioned at the upper strata of quartz sand filter media；Described water inlet pipe 4 and outlet pipe 8 are positioned at the top of sand filtration cell body.

In use, former water is entered inside self-filtering unit the special active sand filtering device of this activity sand filtration by water inlet pipe, and upper after water distributor uniform distribution and outer arranges to adverse current by filter material layer.In the process, former water is filtered, and the pollutant load in water reduces.The quartz sand filter media of bottom is promoted to the cleaning of girt-water separation room by central canal by the air lift being arranged in sand-washing device under the effect of air compressor machine, and sand grains returns filter bed after cleaning, and will clean produced pollution beyond the region of objective existence simultaneously and arrange, thus realizing filtering continuously.

Claims (3)

1. the active sand filtering device of a novel all-in-one sewage treatment process, there is sand filtration cell body, it is characterized in that: for filter sand being had the tapered space of guiding bottom described sand filtration cell body, self-filtering unit it is provided with in described sand filter, self-filtering unit includes water distributor, quartz sand filter media and the outlet pipe that water inlet pipe connects with water inlet pipe, and described quartz sand filter media covers described water distributor；Described self-filtering unit top is provided with sand-washing device, described sand-washing device includes stretching to the central canal bottom sand filtration cell body, the top of described central canal is set with out sandpipe, central canal connects girt-water separation room with the upper end going out sandpipe, air lift connection girt-water separation room, girt-water separation room is communicated with flushing water outlet pipe, described in go out the sand export of sandpipe and be positioned at the upper strata of quartz sand filter media；Described water inlet pipe and outlet pipe are positioned at the top of sand filtration cell body.

2. activity sand filtering device as claimed in claim 1, it is characterised in that: described water distributor is two or more cone-shaped cavities being interconnected, cone-shaped cavity apopore is arranged below.

3. activity sand filtering device as claimed in claim 1, it is characterised in that: described quartz sand filter media is Rare-Earth Magnetic sand modified filter material.