CN205473185U - Medium -sized integrated domestic sewage treatment equipment - Google Patents

Abstract

The utility model relates to a sewage equipment technical field, the medium -sized domestic sewage treatment equipment of concretely relates to. The utility model provides a medium -sized integrated domestic sewage treatment equipment, distinguish according to the anaerobism of order setting on one side of the good oxygen digestion tank of mud, the anoxic zone, circulation zone in the oxygen aeration, sedimentation tank and rapid filtration pond, the anaerobism district is equipped with air stripping sewage inlet tube, the rapid filtration pond is connected with tubular disinfection water outlet device, the anoxic zone is equipped with the equipment warehouse including the air -blower, mud backward flow ware and the good oxygen digestion tank of mud intercommunication are arranged to the air stripping that the sedimentation tank was equipped with, the anaerobism district, be equipped with air stripping inner circulating device in the oxygen aeration between circulation zone and the sedimentation tank, be equipped with the outer circulating device of air stripping in anoxic zone and the oxygen aeration between the circulation zone, the backwash waste water gravity in rapid filtration pond flows automatically and distinguishes to the anaerobism. The utility model discloses the installation criteria is high, the running cost is low and the operation maintenance is simple, the utility model discloses a treatment process has optimized the cell body structure, biochemical reactions good with the activity that has increased activated sludge, sewage treatment efficient with can energy saving and emission reduction.

Description

Medium-sized integrated domestic sewage treatment equipment

technical field

The utility model relates to the technical field of sewage treatment equipment, in particular to medium-sized integrated domestic sewage treatment equipment.

Background technique

In the prior art, Chinese patent CN102874925A discloses a sewage biochemical processor, including a box body, the interior of the box body is filled with biological treatment medium (1), and the bottom wall of the box body is provided with a plurality of through holes (2 ), at least one side wall of the box is provided with a ventilation pipe (3) communicating with the inside of the box and extending to the outside of the box. The patent also discloses a sewage biochemical processor group, which comprises a plurality of sewage biochemical processors stacked in the height direction. In the above sewage biochemical processor, sewage flows into the tank from the upper part of the tank, and is treated by the biochemical treatment medium inside the tank. The oxygen needed, the sewage is treated and flows out from the through hole on the bottom wall of the box. However, the structure of this patent is unreasonable and cannot fully solve the following problems:

(1) The design standard of existing technology is low

At present, the effluent standards of medium-sized domestic sewage treatment facilities are mostly the first-level A/B standards of the "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB18918-2002), and it is difficult to meet the standards stably. Beijing, Tianjin and other places have begun to require to meet local standards, effluent CODcr≤30mg/L, BOD5≤6mg/L, NH ₄ + ^-N≤1.5 (2.5)mg/L, TN≤15mg/L, TP≤0.3mg /L, SS≤5mg/L The effluent water quality standard is getting higher and higher, and some areas also require the use of reclaimed water, so the existing process can no longer meet the high standard effluent water quality requirements;

(2) The operating cost of existing technology is high

The existing medium-sized integrated sewage treatment main processes include: contact oxidation, A/O process, MBR, etc. Stirring, aeration, lifting, reflux, sludge discharge, etc. have high power consumption and chemical consumption, resulting in high operating costs , MBR and its improved membrane technology, the cost is even higher, which cannot meet the requirements of energy saving and emission reduction;

(3) The existing technology occupies a large area

At present, ecological treatment methods that imitate natural degradation: artificial wetlands, biological ponds and other processes require an area of about 20-30m ² to treat a ton of water, and activated sludge A/O and its improved process require an area of about 2-3m to treat a ton of water ^2. The area required for contact oxidation or SBR process to treat a ton of water is about 1-1.5m ² , and the area required for MBR process to treat a ton of water is about 0.5-1.0m ² . further optimization;

(4) There are many and miscellaneous existing technical equipment

The existing technological process is generally longer and involves more equipment, such as submersible sewage pumps, agitators, return pumps, sludge pumps, blowers, filters (membranes), dosing facilities, fillers, etc., which increase investment costs and Difficulty in operation, maintenance and management. It is only a scaled-down version of a large sewage plant. It is not suitable for rural areas and other areas with relatively poor management and backward technology, so that a large number of treatment facilities are left idle;

(5) The investment cost of the existing technology is high

At present, the investment cost per ton of water for integrated equipment is about 7,000 yuan, and the smaller the scale, the higher the unit cost. The main reason is the size of the equipment, the number of equipment, and the cost of the equipment itself. It is urgent to reduce production costs and seek simple and cost-effective devices. ;

(6) The processing scale of the existing technology is limited

The existing domestic sewage treatment process is limited by manufacturing, transportation, land occupation, etc., and the treatment capacity is low, but it is also limited by the structure and size of the equipment. If the treatment capacity is greater than or equal to 500m ³ /d scale, it cannot process and produce. As a result, the scope of use is limited, and the phenomenon of "big horses and small carts" is relatively serious. When some processes (membranes) have no water inflow for a short period of time, the system is prone to collapse, and the activated sludge needs to be domesticated again;

(7) The treatment effect is poor when the prior art is low temperature

In the cold area of northern China, the existing integrated treatment equipment needs to take insulation measures in winter, such as external housing, so that the activity of sludge cannot be guaranteed, and the stability of the system operation is poor;

(8) Poor hydraulic conditions in existing technologies;

The hydraulic flow state of the existing process is mostly plug-flow or fully mixed, which is relatively simple, but the size of the integrated treatment equipment is small, and it is easy to produce short flow or local mud accumulation, and the sewage cannot fully contact with the organisms, and the reaction rate and volume The utilization rate is low, and the pool structure and hydraulic flow state need to be optimized.

Utility model content

In order to overcome the defects in the prior art, the utility model provides a medium-sized integrated domestic sewage treatment equipment, which has higher construction standards than the prior art, smaller floor space, low operating cost, low investment per ton of water, and simple operation and maintenance. The structure of the pool is optimized, the best biochemical reaction conditions are created, the activity of activated sludge is increased and the efficiency of sewage treatment is improved, and the purpose of energy saving and emission reduction can be achieved.

The utility model is realized through the following technical scheme: medium-sized integrated domestic sewage treatment equipment, including anaerobic zone, anoxic zone, oxygen aeration internal circulation zone and sedimentation tank arranged in sequence on one side of the sludge aerobic digestion tank and a fast filter tank, the anaerobic zone is provided with an air-lift sewage inlet pipe, the fast filter tank is connected with a tubular disinfection water outlet, and an equipment warehouse is provided on one side of the anoxic zone, and a blower is provided in the equipment warehouse , the settling tank is provided with an air lift sludge reflux device and communicated with the sludge aerobic digester; An air-lifting external circulation device is provided between the oxygen aeration internal circulation area, and the backwash wastewater in the fast filter enters the anaerobic area under the gravity self-flow state through the gravity return pipe.

Further, the air-lift internal circulation device, the air-lift external circulation device and the air-lift sludge discharge reflux device all include the air-lift reflux device, and the air-lift reflux device includes an input pipe and a blower through a blowing pipe and an air inlet. A connected air pipe, the air pipe is connected with one end of the riser pipe, and the other end of the riser pipe is connected with the discharge pipe.

Further, irregular aerators are respectively arranged in the anaerobic zone, the anoxic zone and the quick filter tank.

Further, a set of folded plates parallel to each other and equally spaced is arranged in the oxygen-deficient zone, and the set of folded plates is two folded plates parallel to each other.

Further, the oxygen aeration internal circulation zone is a micron aerobic aeration internal circulation device.

Further, the blower is provided with a supercharging device.

Further, the blower is provided with a heat conductor.

Compared with the prior art, the medium-sized integrated domestic sewage treatment equipment described in the utility model has the advantages of:

(1) Strong impact load resistance, high sludge concentration, twice as high as that of conventional activated sludge, activated sludge can adapt to continuous water cut-off conditions for 2 months;

(2) Small footprint, only 1/3 to 1/2 of traditional crafts;

(3) The mass transfer rate is high, and the reaction rate is increased by 100 times by using a micron aerator;

(4) The operating cost is low, and the operating cost is 20% to 30% lower than that of the traditional process;

(5) The amount of mud produced is low, only 10% of the traditional process;

(6) The investment cost is low, and the investment is 10% to 15% lower than that of traditional crafts.

Description of drawings

Fig. 1 is the structural representation of medium-sized integrated domestic sewage treatment equipment described in the utility model;

Fig. 2 is a sectional view of the process structure of the medium-sized integrated domestic sewage treatment equipment described in the utility model;

Fig. 3 is a structural diagram of the air-lift reflux device in the medium-sized integrated domestic sewage treatment equipment of the present invention.

reference sign

1-gas lift sewage inlet pipe, 2-anaerobic zone, 3-anoxic zone, 4-oxygen aeration internal circulation zone, 5-sedimentation tank, 6-quick filter tank, 7-tube disinfection water outlet, 8- Equipment warehouse, 9-sludge aerobic digester, 10-blower, 11-heat conductor air lift external reflux device, 12-air lift internal circulation device, 13-gravity return pipe, 14-air lift external circulation device, 15- Airlift mud discharge reflux device, 16-folding plate, 17-blast pipe, T1-air lift reflux device, T2-air inlet, T3-input pipe, T4-air pipe, T5-riser pipe, T6-discharge pipe.

The direction of the arrow in the figure is the flow direction of air, sewage or sludge.

detailed description

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

As shown in Figures 1 and 2, the medium-sized integrated domestic sewage treatment equipment provided by the utility model includes an anaerobic zone 2, anoxic zone 3, and an oxygen aeration zone arranged in sequence on one side of the sludge aerobic digestion tank 9. Circulation zone 4, settling tank 5 and quick filter tank 6, described anaerobic zone 2 is provided with air-lifting sewage inlet pipe 1, and described quick filter tank 6 is connected with tubular disinfection water outlet 7, and in described anoxic zone 3 A group of folded plates parallel to each other and at equal intervals is provided, and the set of folded plates consists of two folded plates 16 parallel to each other that divide the anoxic zone 3 into anoxic zones that communicate with each other. One side of the anoxic zone 3 is provided with an equipment warehouse 8, the equipment warehouse 8 is provided with a blower 10, and the sedimentation tank 5 is provided with an air lift and sludge discharge reflux device 15 which communicates with the sludge aerobic digestion tank 9, and the The anaerobic zone 2, the oxygen aeration internal circulation zone 4 and the sedimentation tank 5 are provided with an air-lift internal circulation device 12, and an air-lift external circulation device 14 is provided between the anoxic zone 3 and the oxygen aeration internal circulation zone 4, The backwash wastewater in the quick filter 6 enters the anaerobic zone 2 through the gravity return pipe 13 under the state of gravity flow. As shown in Figures 1 and 3, the air-lift internal circulation device 12, the air-lift external circulation device 14 and the air-lift mud discharge reflux device 15 all include the air-lift reflux device T1, and the air-lift reflux device T1 includes an input pipe T3 and the air pipe T4 connected with the air blower 10 to the air inlet T2 through the blowing pipe 17, the air pipe T4 is connected to one end of the riser T5, and the other end of the riser T5 is connected to the discharge pipe T6. , the anaerobic zone 2, the anoxic zone 3 and the fast filter 6 are respectively provided with irregular aerators. cycle device. In this embodiment, the blower 10 is provided with a booster device, and the blower 10 is also provided with a heat conductor 11 .

The utility model is not limited to the above-mentioned embodiments. Without departing from the essential content of the utility model, any deformation, improvement and replacement conceivable by those skilled in the art all fall within the protection scope of the utility model.

Claims (7)

1. The most medium-sized integrated domestic sewage treatment device, be included in that sludge aerobic digester (9) side arranges in order detests Oxygen district (2), anoxic zone (3), oxygen aeration inner circulation zone (4), sedimentation tank (5) and rapid filter (6), described anaerobic zone (2) Being provided with air stripping sewage water inlet pipe (1), described rapid filter (6) is connected with tubular type sterilization water outlet device (7), described anoxic zone (3) Side is provided with equipment compartment (8), and described equipment compartment (8) is provided with aerator (10), and described sedimentation tank (5) is provided with air stripping spoil disposal Return channel (15) connects with sludge aerobic digester (9), described anaerobic zone (2), oxygen aeration inner circulation zone (4) and heavy Pond, shallow lake (5) is provided with air stripping internal circulation apparatus (12), is provided with between described anoxic zone (3) and oxygen aeration inner circulation zone (4) Air stripping external circulating device (14), the backwash waste of described rapid filter (6) passes through gravity reflux pipe (13) at flow by gravity shape Anaerobic zone (2) is entered under state.
2. The most medium-sized integrated domestic sewage treatment device, it is characterised in that circulation in described air stripping Device (12), air stripping external circulating device (14) and air stripping spoil disposal return channel (15) all include described stripping reflux device (T1), Described stripping reflux device (T1) includes input pipe (T3) and with aerator (10) by blast pipe (17) and air intlet (T2) air hose (T4) connected, described air hose (T4) is connected with one end of riser (T5), described riser (T5) The other end be connected with discharge pipe (T6).
3. The most medium-sized integrated domestic sewage treatment device, it is characterised in that described anaerobic zone (2), It is respectively equipped with irregular aerator in anoxic zone (3) and rapid filter (6).
4. The most medium-sized integrated domestic sewage treatment device, it is characterised in that described anoxic zone (3) Inside being provided with and be parallel to each other and be spaced equal flap group, described flap group is two flaps (16) being parallel to each other.
5. The most medium-sized integrated domestic sewage treatment device, it is characterised in that follow in described oxygen aeration Ring region (4) is that micron is held concurrently oxygen aeration internal circulation apparatus.
6. The most medium-sized integrated domestic sewage treatment device, it is characterised in that described aerator (10) It is provided with pressurizer.
7. The most medium-sized integrated domestic sewage treatment device, it is characterised in that described aerator (10) It is provided with heat conductor (11).