Integrated domestic sewage treatment device
The present invention relates to environmental technology field, especially a kind of integrated domestic sewage treatment device.
Existing domestic sewage treatment device forms primarily of hydrolysis acidification pool, contact-oxidation pool and second pond sequential series, be combined into a casing or separately independent be multiple casing, adopt buried or ground type to arrange.Secondary clarifier effluent promotes series connection successively through pump again and enters independent tank type biological filter and independent tank type filter process, finally reaches the water quality requirement of reuse or discharge.In existing installation, because needs arrange separately tank type filter plant, connecting pipeline and pipe valve is various, control complexity, tank body is many, and floor space is large; And the lifting that secondary clarifier effluent need increase primary pump just can enter filtration tank body, increase energy consumption, running cost is large.
Summary of the invention
The applicant needs setting independently to filter tank body for above-mentioned existing domestic sewage treatment device, the shortcomings such as floor space is large, control is complicated, energy consumption is high, a kind of integrated domestic sewage treatment device rational in infrastructure is provided, substantially reduce floor space, simplify control, reduce operating power consumption.
The technical solution adopted in the present invention is as follows:
A kind of integrated domestic sewage treatment device, comprise be linked in sequence hydrolysis acidification pool, contact-oxidation pool, second pond, biological filter and quartz sand filter tank, intermediate pool is provided with between biological filter and quartz sand filter tank, three pond bodies are close to successively, the water-in of intermediate pool and the water outlet of biological filter are positioned at bottom, the water outlet of intermediate pool and the water-in in quartz sand filter tank are positioned at top, and the water outlet in quartz sand filter tank is positioned at bottom; The filtrating area filtrate in biological filter and quartz sand filter tank is all positioned at below filtering basin, above filtrating area, is provided with back washing device.
Further improvement as technique scheme:
Described back washing device comprises the back suction cover be arranged at above filtrate, and backwash water pump is fixed on the upper surface of back suction cover, and guide shell bottom face connects backwash water pump outlet; Guide shell top is fixedly connected with bend pipe, and bend pipe inserts backwash rising pipe respectively, and back suction cover, backwash water pump, bend pipe and guide shell can be moved up and down by spring.
Described hydrolysis acidification pool, contact-oxidation pool, second pond, biological filter, intermediate pool and quartz sand filter tank are close to successively, are integratedly arranged in a unified casing.
Sludge sump and Ventilator Room is also provided with in described casing.
Beneficial effect of the present invention is as follows:
The present invention is by being integrated in preorder treatment facility by tank type biological filter and tank type strainer, form the treatment facility of integration, current are made naturally to flow through each functional zone from top to bottom, without the need to additionally arranging lift pump, biological filter and filtrating area are without the need to arranging the pipeline of valve and connection, fully ensure that consistence and the globality of equipment, in-site installation can be carried out rapidly, also carry out buried easily, reduce floor space, simplify control mode, reduce operating power consumption and sound pollution, be conducive to the standard prod forming modularization, mass.
Filtrating area is arranged on below filtering basin by the present invention, above filtrating area, is provided with the back washing device of back suction cover, automatically can carry out backwash to filtrate in time, to recover the filter effect of filtrate after work for some time.This is simple and compact for structure, and after directly using, namely the water purification in road can carry out backwash, thus without the need to arranging the water source needed for complicated back suction pipeline and backwash; And namely can carry out backwash in the intervals of business, can resume work immediately after backwash terminates, ensure that the continuity of work.
Accompanying drawing explanation
Fig. 1 is front view of the present invention.
Fig. 2 is A-A sectional view in Fig. 1.
Fig. 3 is B-B sectional view in Fig. 1.
In figure: 1, water-in; 2, hydrolysis acidification pool; 3, contact-oxidation pool; 4, sludge sump; 5, second pond; 6, quartz sand filter tank; 7, intermediate pool; 8, biological filter; 9, Ventilator Room; 10, disinfection pool; 11, water outlet; 12, back suction cover; 13, backwash water pump; 14, guide shell; 15, spring; 16, backwash water outlet; 17, filtrate; 18, clear water storehouse after filter; 19, backwash rising pipe; 20, bend pipe; 21, casing.
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
As shown in Figure 1 to Figure 3, integrated domestic sewage treatment device of the present invention comprises the hydrolysis acidification pool 2, contact-oxidation pool 3 and the second pond 5 that are linked in sequence, road after the water outlet of second pond 5, be disposed with biological filter 8, intermediate pool 7 and quartz sand filter tank 6, the water outlet in quartz sand filter tank 6 is finally discharged by water outlet 11 by disinfection pool 10, and Ventilator Room 9 is positioned at disinfection pool 10 side.Wherein, the water-in (i.e. the water outlet of second pond 5) of biological filter 8 is positioned at top, the water-in (i.e. the water outlet of biological filter 8) of intermediate pool 7 is positioned at bottom, the water outlet (i.e. the water-in in quartz sand filter tank 6) of intermediate pool 7 is positioned at top, and the water outlet (i.e. the water-in of disinfection pool 10) in quartz sand filter tank 6 is positioned at bottom.Hydrolysis acidification pool 2, contact-oxidation pool 3, second pond 5, sludge sump 4, biological filter 8, intermediate pool 7 are close to successively with quartz sand filter tank 6 and Ventilator Room 9, are integratedly arranged in unified casing 21.
Biological filter 8 of the present invention is biofilter material and quartz sand filter media with the filtrating area filtrate 17(in quartz sand filter tank 6 separately) be all positioned at below filtering basin, above filtrating area, be provided with back washing device; Back washing device comprises the back suction cover 12 be arranged at above filtrate 17, and backwash water pump 13 is fixed on the upper surface of back suction cover 12, and guide shell 14 bottom face connects the outlet of backwash water pump 13; Guide shell 14 top is fixedly connected with the bend pipe 20 of two symmetries, and bend pipe 20 inserts backwash rising pipe 19 respectively, and back suction cover 12, backwash water pump 13, bend pipe 20 can be moved up and down by spring 15 with guide shell 14.
During real work, inject the sanitary sewage of water-in 1 successively through hydrolysis acidification pool 2, contact-oxidation pool 3 and second pond 5, this part is main biochemical reaction region, hydrolysis acidification pool 2 is that the macromole decomposed difficult in sanitary sewage is resolved into easily biochemical small molecules, contact-oxidation pool 3 is removed by oxidation operation easily biochemical for the overwhelming majority, second pond 5 is by remaining particulate matter, colloid, microorganism corpse carries out solid-liquid separation, base sludge is promoted to sludge sump 4 by air-lift device, supernatant liquor gravity flow enters biological filter 8, biological filter 8 is to the further biochemical treatment of remaining organism, impel organic pollutant up to standard.After the filter of biological filter 8, clear water storehouse 18 water outlet is from flowing into intermediate pool 7, then enters quartz sand filter tank 6 from intermediate pool 7 overflow, removes fine particle thing, colloid etc. thus meets reuse or emission standard; After the filter in quartz sand filter tank 6, clear water storehouse 18 water outlet is finally discharged by water outlet 11 by disinfection pool 10.
As shown in Figure 1, the water outlet of second pond 5, biological filter 8 is entered from top overflow, now back suction cover 12 is in floating state, current flow through the biofilter material of biological filter 8 from top to bottom, are provided with aerating apparatus bottom biological filter 8, and aerobic bacteria take biofilter material as carrier, be attached to biofilter material surface, the organism flowed through in the sewage of biofilter material is removed by aerobic bacteria; Then water outlet enters intermediate pool 7 from bottom.The water outlet of intermediate pool 7 enters quartz sand filter tank 6 from top overflow, and current flow through the quartz sand filter media in quartz sand filter tank 6 from top to bottom, filter, main removal fine particle thing and colloid; Finally flow out to disinfection pool 10 from bottom.Because current are all flow through filtrate 17 to filter under self gravitation, thus do not need additionally to arrange lifting water pump, reduce operating power consumption and sound pollution.
After work for some time, the more solid particulate of filtrate 17 trapped inside in biological filter 8 and quartz sand filter tank 6, have impact on filter effect, now starts backwash water pump 13, produce negative pressure instantaneously in back suction cover 12 and decline, its opening is close to above filtrate 17 and aspirates; Under negative pressure state, the dirt particle between filtrate 17 is all inhaled into back suction cover 12 and guide shell 14, and is expelled to backwash rising pipe 19 by bend pipe 20 and flows out from flowing through backwash water outlet 16.Filtrate 17 recovers filtration capacity.After backwash completes, backwash water pump 13 is shut down, and in back suction cover 12, negative pressure disappears, and under the effect of spring 15 elastic force, back suction cover 12 lifts and leaves above filtrate 17, proceeds filtration operation.
More than describing is explanation of the invention, and be not the restriction to invention, when without prejudice to spirit of the present invention, the present invention can do any type of amendment.