CN207903984U - A kind of rural dispersed sewage treatment unit - Google Patents

Abstract

The utility model provides a kind of rural dispersed sewage treatment unit, including：Anaerobic digestion filter tank, the anaerobic digestion filter tank outlet is connected to the entrance of bacterium algae mixed reaction pond, the outlet of bacterium algae mixed reaction pond is connected to inclined plate clarifying basin, by algal gel floss hole into aftertreatment systems, another part algal gel enters anaerobic digestion filter tank by algal gel reflux pump and carries out Anaerobic Digestion the part algal gel precipitated from inclined plate clarifying basin；It is provided with packed bed in anaerobic digestion filter tank；Chain type blender is installed on bacterium algae mixed reaction pond, full spectrum light compensating lamp is installed at the top of bacterium algae mixed reaction pond.Inlet COD concentration can be 300 500mg/L by adjusting hydraulic detention time and bacterium algae concentration by the utility model, and ammonia nitrogen concentration is 20 50mg/L, and the rural domestic sewage treatment that total phosphorus concentration is 5 20mg/L to national integrated wastewater discharges level-one B standard.It is not aerated power plant, the wastewater treatment energy consumption of reduction；Reduce excess sludge treating capacity, reduces subsequent processing expense.

Description

A kind of rural dispersed sewage treatment unit

Technical field

The present invention relates to environment-friendly engineering technical field more particularly to a kind of rural dispersed sewage treatment units.

Background technology

After the 1950s, with the sharp increase of population in the world quantity and industrial boom, the mankind provide water The demand in source constantly expands, but the water pollution problems of simultaneous getting worse so that whole world entirety water resources situation is fast Speed deteriorates.For China, although constantly building sewage treatment plant in the past 20 years, relevant art level is also being continuously improved, Large-scale wastewater treatment plant is concentrated mainly on urban area, causes most of country sewage that cannot timely and effectively handle, simultaneously In view of rural area discharge capacity ratio shared in sewage total release more and more big and its ingredient complexity (including agricultural The waste water such as production, washing shower, excrement, animal-breeding and landfill leachate), the overwhelming majority has been directly discharged into surface water body such as river It flows lake or carries out soil infiltrating irrigation, threatened caused by water body and soil environment and influence also more to come serious.It is especially big Part water head site, ecological preservation area are located at rural area mostly so that renovating the water environment pollution of rural area seems further heavy It wants.

Although with the quickening of new countryside construction paces and the support of central-government policy, China's rural dispersed life at present is dirty The construction of drainage facility has obtained certain achievement, but from technical merit on the whole from the point of view of still fall behind very much.Currently, China rural area There are many sanitary sewage disposal technology type, can be divided into 3 classes by its principle：Aerobic biological process technology, eco-treatment technology and object Change treatment technology.Aerobic biological process technology can be divided into activated sludge process and biofilm two is big according to the growth conditions of sludge Class.Wherein, the operating cost of activated sludge process is higher, and there is also sludge bulking problems, therefore is not suitable for using in rural area. In comparison, biofilm is more readily maintained management, and without sludge bulking problem, but treatment effect is poor, and to N, P element Remove function it is single, cannot be satisfied generally present eutrophication Rural Water Environment administer demand；Eco-treatment technology, although Have the function of synchronous denitrification dephosphorizing, but treatment effeciency is low, takes up a large area；Materializing strategy technology extremely has the processing capacity of nitrogen Limit, and operating cost is higher.

Invention content

The shortcomings that the purpose of the utility model is to overcome the prior arts provides a kind of low power consuming, efficient rural area point Type sanitary sewage biological treatment device is dissipated, to improve contaminant removal efficiency, reduces operating cost, and sewage is made to reach after processing Level-one B standard is discharged to integrated wastewater.

A kind of rural dispersed sewage treatment unit, including：Anaerobic digestion filter tank, the anaerobic digestion filter tank go out Mouth is connected to the entrance of bacterium algae mixed reaction pond, and the outlet of bacterium algae mixed reaction pond is connected to inclined plate clarifying basin, is clarified from inclined plate By algal gel floss hole into aftertreatment systems, another part algal gel is entered by algal gel reflux pump detests the part algal gel of pond precipitation Oxygen digests filter tank and carries out Anaerobic Digestion；

It is provided with packed bed in anaerobic digestion filter tank；

Chain type blender is installed on bacterium algae mixed reaction pond, full spectrum is installed at the top of bacterium algae mixed reaction pond Light compensating lamp.

Further, rural dispersed sewage treatment unit as described above connects in the outside in anaerobic digestion filter tank It is connected to wastewater influent pump.

Further, rural dispersed sewage treatment unit as described above, the anaerobic digestion filter tank, bacterium algae are mixed Conjunction reaction tank, inclined plate clarifying basin pond body material can be with stainless steel, fiberglass, clad steel plate or carbon steel line with rubber.

Further, rural dispersed sewage treatment unit as described above, the filler used in the packed bed are One kind in wire packing, ripple packing, corrugated plate packing, conjugate ring, Pall ring, cascade ring, plasticity garland, material are modeling Material.

Advantageous effect：

Inlet COD concentration can be 300-500mg/ by adjusting hydraulic detention time and bacterium algae concentration by the utility model L, ammonia nitrogen concentration 20-50mg/L, total phosphorus concentration are that rural domestic sewage treatment to the national integrated wastewater of 5-20mg/L discharges Level-one B standard.The utility model has the advantage of：1) without aeration power plant, the wastewater treatment energy consumption of reduction；2) reduce Excess sludge treating capacity reduces subsequent processing expense.

Description of the drawings

Fig. 1 is the utility model rural dispersed sewage treatment unit structural schematic diagram；

In figure：1, wastewater influent pumps；2, anaerobic digestion filter tank；3, packed bed；4, chain type blender；5, full spectrum light filling Lamp；6, bacterium algae mixed reaction pond；7, inclined plate clarifying basin；8, outlet of sewer；9, algal gel floss hole；10, algal gel reflux pump.

Specific implementation mode

To make the object, technical solutions and advantages of the present invention clearer, the technical solution below in the present invention carries out clear Chu is fully described by, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts Embodiment shall fall within the protection scope of the present invention.

Fig. 1 is the utility model rural dispersed sewage treatment unit structural schematic diagram, as shown in Figure 1, this practicality New village dispersion type domestic wastewater processing unit：In one wastewater influent of the outside of anaerobic digestion filter tank 2 installation pump 1, with provide into Water, installs filter tank packed bed 3 in anaerobic digestion filter tank 2, and sewage waste water after Anaerobic Treatment is mixed to bacterium algae by flow by gravity Reaction tank 6 is closed, under the action of chain type blender 4, realizes that the contact of bacterium algae and dirty water pollutant, algae substances utilize installation The light source that full spectrum light compensating lamp 5 at 6 top of bacterium algae mixed reaction pond is provided, oxygen is released by the way that photosynthesis is intermittent Gas provides the electron acceptor needed for decomposing pollutant for mushroom, oblique from inclined plate is flowed into through 6 processed waste water of bacterium algae mixed reaction pond Plate clarifying basin 7, for supernatant by 8 qualified discharge of outlet of sewer, algal gel part after precipitation passes through algal gel after precipitation process Floss hole 9 is discharged into subsequent processing, and another part algal gel enters 2 progress anaerobism of anaerobic digestion filter tank by algal gel reflux pump 10 and disappears Change is handled.Anaerobic digestion filter tank 2, bacterium algae mixed reaction pond 6 and 7 material of inclined plate clarifying basin is fiberglass, and described detests It is screen waviness packings that oxygen, which digests filter tank filler,.

Anaerobic digestion filter tank, bacterium algae hybrid reaction described in the utility model rural dispersed sewage treatment unit Pond and inclined plate clarifying basin can determine that its size, pond body material can be with stainless steel, fiberglass, clad steel plates according to wastewater treatment capacity Or carbon steel line with rubber.

Filler used in the anaerobic digestion filter tank is structured packing, can be wire packing, ripple packing, corrugated plating One kind in filler, conjugate ring, Pall ring, cascade ring, plasticity garland, material are plastics.

Utility model works principle is：

1) Anaerobic Treatment：By the domestic sewage in rural areas of collection be passed through the bath mud mixed liquor behind anaerobic digestion filter tank with reflux into Row anaerobic reaction, wherein most polluter are decomposed into small molecule with degradation of organic substances matter through anaerobe or are converted to first The fermentation temperature of the gases such as alkane, hydrogen sulfide, affiliated anaerobic reactor is maintained at 25~35 DEG C, and pH is 7~8；

2) photosynthesis and aerobic hybrid reaction：Sewage after Anaerobic Treatment flows into bacterium algae mixed reaction pond, uses bacterium Algae mixed culture technique is aided with full spectrum light compensating lamp intermittent irradiation to promote algal grown and oxygen to discharge, is there is light source irradiation When algae oxygen is released by photosynthesis, be at this time Aerobic Process for Treatment, and gauge without light source irradiate when then be hypoxia response；The reaction By chain type blender so that bacterium algae is mixed with sewage, the waste water handled through bacterium algae mixed reaction pond flows into inclined plate clarification in pond Pond；

3) inclined plate is clarified：The water outlet of bacterium algae mixed reaction pond is passed through inclined plate clarifying basin, mixing sludge therein is retained, Part algae sedimentation substance is back in initial anaerobic digestion filter tank, with the nitrogen Phosphorous species lacked during afterfermentation Simultaneously utmostly to reduce excess sludge treating capacity, for remaining algae substances as sludge through follow-up disposition, supernatant is then up to standard Discharge.

By above-mentioned rural dispersed sewage treatment unit be applied to a certain rural domestic sewage treatment in Hebei (COD, 350mg/L, ammonia nitrogen concentration 28mg/L, total phosphorus concentration 13mg/L) processing, control anaerobic digestion filter tank hydraulic detention time is 8h, Bacterium algae mixed reaction pond hydraulic detention time is 12h and inclined plate clarifying basin hydraulic detention time is 2h；Wastewater treatment capacity is 10m3/ d.Effluent COD concentration 51mg/L, ammonia nitrogen concentration 6.5mg/L, total phosphorus concentration 0.8mg/L after device processing reach dirty Level-one B standard in water comprehensive standard.

Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features； And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and Range.

Claims (4)

1. a kind of rural dispersed sewage treatment unit, which is characterized in that including：Anaerobic digestion filter tank (2), described detests Oxygen digestion filter tank (2) outlet is connected to the entrance of bacterium algae mixed reaction pond (6), the outlet of bacterium algae mixed reaction pond (6) and inclined plate Clarifying basin (7) be connected to, from inclined plate clarifying basin (7) precipitate part algal gel by algal gel floss hole (9) into aftertreatment systems, separately A part of algal gel enters anaerobic digestion filter tank by algal gel reflux pump (10) and carries out Anaerobic Digestion；

It is provided with packed bed (3) in anaerobic digestion filter tank (2)；

Chain type blender (4) is installed on bacterium algae mixed reaction pond (6), is equipped at the top of bacterium algae mixed reaction pond (6) Full spectrum light compensating lamp (5).

2. rural dispersed sewage treatment unit according to claim 1, which is characterized in that in anaerobic digestion filter tank (2) the wastewater influent that is externally connected to pumps (1).

3. rural dispersed sewage treatment unit according to claim 1, which is characterized in that the anaerobic digestion filter Pond (2), bacterium algae mixed reaction pond (6), inclined plate clarifying basin (7) pond body material can be with stainless steel, fiberglass, clad steel plate or carbon steels Line with rubber.

4. rural dispersed sewage treatment unit according to claim 1, which is characterized in that the packed bed (3) Filler used is one in wire packing, ripple packing, corrugated plate packing, conjugate ring, Pall ring, cascade ring, plasticity garland Kind, material is plastics.