CN207760199U - A kind of Sewage Reuse System - Google Patents

Abstract

The utility model is related to a kind of Sewage Reuse Systems, including along the sequentially connected pretreatment mechanism in sewage flow direction, hydrolysis acidification mechanism, A/O mechanisms, membrane biological reaction mechanism, UF membrane mechanism and UV disinfecting mechanisms；The A/O mechanisms include along the sequentially connected at least level-one A/O reaction tanks in sewage flow direction.Sewage disposal system provided by the utility model is successively handled sewage using preconditioning technique, hydrolysis acidification technique, nitration denitrification, membrane bioreaction technology, membrane separation process and UV disinfection technologies, it is simple in structure, sludge yield is small, operation energy consumption and at low cost, effective, the harmless treatment of sewage can be achieved, treated, and effluent quality can reach reuse standard, to effectively save water resource, there is the preferable feature of environmental protection and economy.

Description

A kind of Sewage Reuse System

Technical field

The utility model belongs to environmental technology field, and in particular to a kind of Sewage Reuse System.

Background technology

Chinese soil, shortage of water resources, there are hidden danger for energy security.Instantly, in national more than 660 a cities, have more than 400 A different degrees of water shortage in city has a city serious water shortage more than 100, and the contradiction of supply and demand for the water resource in coastal cities is especially prominent, portion Region-by-region groundwater mining is serious.This number is undoubtedly very surprising, and the current Facing Hydraulic Project of China is severe to be chosen War, flood, shortage of water resources, water pollution have become main problem.Therefore, water-saving technology be environmental protection development direction and Emphasis.What is formed distinct contrast with shortage of water resources is that national annual large amount of sewage is unprocessed has just been discharged into rivers and lakes, sea Domain causes waters to be heavily polluted.One side urban water shortage, and another aspect sewage is lost in vain, not only polluted environment, but also Waste resource.

Utility model content

The utility model embodiment is related to a kind of Sewage Reuse System, can at least solve the segmental defect of the prior art.

The utility model embodiment is related to a kind of Sewage Reuse System, including along the sequentially connected pre- place in sewage flow direction Manage mechanism, hydrolysis acidification mechanism, A/O mechanisms, membrane biological reaction mechanism, UF membrane mechanism and UV disinfecting mechanisms；The A/O mechanisms Including along the sequentially connected at least level-one A/O reaction tanks in sewage flow direction.

As one of embodiment, the UF membrane mechanism includes nanofiltration equipment and/or reverse osmosis equipment.

As one of embodiment, the pretreatment mechanism include the solid-liquid separator being sequentially arranged along sewage flow direction and Regulating reservoir.

The boring aeration pipe for stirring is equipped with as one of embodiment, in the regulating reservoir.

As one of embodiment, there is the first sludge outlet, first sludge outlet to connect for the membrane biological reaction mechanism It is connected to sludge reflux pipeline and the first sludge carrier pipe road, the sludge reflux pipeline is connected to the A/O mechanisms, and described first Sludge carrier pipe road is connected with sludge concentration tank.

As one of embodiment, there is the second sludge outlet, second sludge outlet to pass through for the hydrolysis acidification mechanism Second sludge carrier pipe road is connect with the sludge concentration tank.

As one of embodiment, the sludge concentration tank is connected with supernatant outlet pipeline, the supernatant outlet pipeline It is connected to the A/O mechanisms.

As one of embodiment, there is concentrated water outlet, the concentrated water outlet to be connected to described for the UF membrane mechanism Hydrolysis acidification mechanism.

As one of embodiment, the UF membrane mechanism includes along the sequentially connected nanofiltration equipment in sewage flow direction and anti- Penetration equipment, the sewage flow pipe between the nanofiltration equipment and the membrane biological reaction mechanism and the reverse osmosis equipment Control valve is provided on sewage flow pipe between the UV disinfecting mechanisms, UV disinfecting mechanisms outlet end is connected with clear water Maintain pipeline, the sewage stream being connected to by the clear water maintenance pipeline other end between the nanofiltration equipment and the reverse osmosis equipment On siphunculus.

The utility model embodiment at least has the advantages that：

Sewage disposal system provided by the utility model is using preconditioning technique, hydrolysis acidification technique, nitration denitrification, film Bioreaction technology, membrane separation process and UV disinfection technologies are successively handled sewage, it is simple in structure, sludge yield is small, Operation energy consumption and it is at low cost, it can be achieved that sewage effective, harmless treatment, treated, and effluent quality can reach reuse standard, To effectively save water resource, there is the preferable feature of environmental protection and economy.

Description of the drawings

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it can also be obtained according to these attached drawings other attached drawings.

Fig. 1 is the structural schematic diagram for the Sewage Reuse System that the utility model embodiment provides.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work The all other embodiment obtained, shall fall within the protection scope of the present invention.

Such as Fig. 1, the utility model embodiment provides a kind of Sewage Reuse System, including is sequentially connected along sewage flow direction Pretreatment mechanism, hydrolysis acidification mechanism 3, A/O mechanisms 4, membrane biological reaction mechanism 5, UF membrane mechanism 6 and UV disinfecting mechanisms 7； The A/O mechanisms 4 include along the sequentially connected at least level-one A/O reaction tanks in sewage flow direction.Wherein：

Preferably, above-mentioned pretreatment mechanism includes the solid-liquid separator 1 being sequentially arranged along sewage flow direction and adjusts Save pond 2.The solid-liquid separator 1 is mainly used for removing the large granular impurity in sewage, prevents equipment from blocking and influencing subsequent dirt Water treatment efficiency；In the present embodiment, which preferably uses grid maker, certain centrifugal separation equipment etc. other Solid-liquid separating equipment be also suitable in this present embodiment.Sewage through separation of solid and liquid enters regulating reservoir 2, dirty in the regulating reservoir 2 Water obtains homogeneous and measures, to improve subsequent wastewater treatment efficiency.Wherein, it is preferably equipped with for stirring in regulating reservoir 2 Boring aeration pipe, to prevent sludge settling.

Above-mentioned hydrolysis acidification mechanism 3 includes hydrolysis acidification pool 3, and pretreated sewage is promoted to hydrolysis acid by elevator pump Change and handled in pond 3, which is mainly used for the macromolecular open loop chain rupture in sewage becoming small molecule, to carry The biodegradability of high sewage, is handled conducive to microorganism, and reduces sludge yield.

Above-mentioned A/O (Anoxic/Oxic, anoxic/aerobic process) mechanism 4 includes at least level-one A/O reaction tanks；Per level-one A/ In O reaction tanks, sewage is introduced into its denitrification pond and carries out anti-nitration reaction, in denitrification complete sewage overflow to its nitrification tank, Carry out nitration reaction.The organic matter in sewage is can remove by the A/O mechanisms 4 and realizes denitrification functions.In the present embodiment, use Two-stage A/O reaction tanks can fully realize the function of the organic matter removal and denitrogenation in sewage.

The sewage handled through A/O mechanisms 4 enters membrane biological reaction mechanism 5, which includes mainly that film is given birth to Object reactor 5 (MBR), sewage further remove the organic matter contained by it in the membrane bioreactor 5.

The sewage handled through membrane bioreactor 5 enters UF membrane mechanism 6, carries out membrane filtration processing.The UF membrane mechanism 6 It preferably comprises nanofiltration equipment 61 and/or reverse osmosis equipment 62, in the present embodiment, preferably uses nanofiltration equipment 61 and reverse osmosis 62 sequentially connected structure of equipment；Sewage can effectively improve water outlet after nanofiltration equipment 61 and reverse osmosis equipment 62 are handled successively Water quality.

Enter UV disinfecting mechanisms 7 through the clear water that membrane filtration is handled to be handled, can reach reuse standard.

To sum up, sewage disposal system provided in this embodiment is using preconditioning technique, hydrolysis acidification technique, the anti-nitre of nitrification Change, membrane bioreaction technology, membrane separation process and UV disinfection technologies are successively handled sewage, simple in structure, sludge production Measure small, operation energy consumption and it is at low cost, it can be achieved that sewage effective, harmless treatment, treated, and effluent quality can reach reuse Standard has the preferable feature of environmental protection and economy to effectively save water resource.

As the preferred embodiment of Sewage Reuse System provided in this embodiment, such as Fig. 1, the membrane biological reaction mechanism 5 there is the first sludge outlet, first sludge outlet to be connected with sludge reflux pipeline and the first sludge carrier pipe road, the dirt Mud return line is connected to the A/O mechanisms 4, and first sludge carrier pipe road is connected with sludge concentration tank and (has illustrated, do not marked Note).The sludge part that i.e. above-mentioned membrane bioreactor 5 generates is back to the utilization of A/O mechanisms 4, to improve A/O reaction effects, It is remaining to be handled into sludge concentration tank；For the A/O mechanisms 4 using two-stage A/O ponds, above-mentioned returned sludge has part to enter the The ponds level-one A/O 41, the entrance second level ponds A/O 42 in addition.

Further, such as Fig. 1, the hydrolysis acidification pool 3 has the second sludge outlet, and second sludge outlet passes through the Two sludge carrier pipe roads are connect with the sludge concentration tank.

The sludge that can be generated to membrane bioreactor 5 and hydrolysis acidification pool 3 in the sludge concentration tank focuses on, As sludge in sludge concentration tank concentration and through sludge dewatering equipment dehydration, form dewatered sludge, the partially dehydrated dirt Mud can transport outward carry out recycling treatment.Sludge concentration tank can be connected with supernatant outlet pipeline, and the supernatant outlet pipeline connects It is connected to the A/O mechanisms 4；For the A/O mechanisms 4 using two-stage A/O ponds, above-mentioned supernatant outlet pipeline is preferably connected to the The ponds level-one A/O 41, the supernatant generated in sludge concentration tank is backflowed to A/O mechanisms 4 and is handled.

As the preferred embodiment of Sewage Reuse System provided in this embodiment, above-mentioned NF membrane 61 and reverse osmosis membrane 62 Concentrated water/concentrate will be generated, which may return to preceding process and carry out circular treatment, realize this system base This is without discharge outside waste water.Specifically, such as Fig. 1, above-mentioned concentrated water outlet can be connected to the hydrolysis acidification pool 3.

As the preferred embodiment of Sewage Reuse System provided in this embodiment, to improve making for above-mentioned membrane separation plant With the service life, periodically or non-periodically NF membrane 61 and/or reverse osmosis membrane 62 can be maintained；Preferably, this dirt may be used The clear water for meeting reuse standard obtained by water reclaiming system maintains NF membrane 61 and/or reverse osmosis membrane 62.Specifically, right In above-mentioned UF membrane mechanism 6 include nanofiltration equipment 61 and reverse osmosis equipment 62 the case where, such as Fig. 1, in the nanofiltration equipment 61 Sewage flow pipe and the reverse osmosis equipment 62 between the membrane biological reaction mechanism 5 and the UV disinfecting mechanisms 7 it Between sewage flow pipe on be provided with control valve, 7 outlet end of UV disinfecting mechanisms is connected with clear water maintenance pipeline, the clear water It is connected on the sewage flow pipe between the nanofiltration equipment 61 and the reverse osmosis equipment 62 by the maintenance pipeline other end.It is preferred that Ground, setting control valve and booster pump on clear water maintenance pipeline.Above-mentioned each control valve, which is both preferably, uses solenoid valve.Right When NF membrane 61 and reverse osmosis membrane 62 are maintained, the control between above-mentioned nanofiltration equipment 61 and membrane biological reaction mechanism 5 is closed Control valve between valve and reverse osmosis equipment 62 and UV disinfecting mechanisms 7 processed opens the control valve on clear water maintenance pipeline and increasing Press pump can carry out backwash maintenance, simultaneously as the control between reverse osmosis equipment 62 and UV disinfecting mechanisms 7 to NF membrane 61 Valve is closed, and the fresh water lateral pressure of reverse osmosis membrane 62 increases, and can play the role of pressurize backwash, to can be to NF membrane 61 and anti- Permeable membrane 62 is carried out at the same time maintenance.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection domain within.

Claims (9)

1. a kind of Sewage Reuse System, it is characterised in that：Including along the sequentially connected pretreatment mechanism in sewage flow direction, hydrolysis It is acidified mechanism, A/O mechanisms, membrane biological reaction mechanism, UF membrane mechanism and UV disinfecting mechanisms；The A/O mechanisms include along sewage The sequentially connected at least level-one A/O reaction tanks of circulating direction.

2. Sewage Reuse System as described in claim 1, it is characterised in that：The UF membrane mechanism include nanofiltration equipment and/ Or reverse osmosis equipment.

3. Sewage Reuse System as described in claim 1, it is characterised in that：The pretreatment mechanism includes along sewage flow side To the solid-liquid separator and regulating reservoir being sequentially arranged.

4. Sewage Reuse System as claimed in claim 3, it is characterised in that：The perforation for stirring is equipped in the regulating reservoir Aeration tube.

5. Sewage Reuse System as described in claim 1, it is characterised in that：The membrane biological reaction mechanism has the first sludge Outlet, first sludge outlet are connected with sludge reflux pipeline and the first sludge carrier pipe road, and the sludge reflux pipeline connects The A/O mechanisms are connected to, first sludge carrier pipe road is connected with sludge concentration tank.

6. Sewage Reuse System as claimed in claim 5, it is characterised in that：There is the second sludge to go out for the hydrolysis acidification mechanism Mouthful, second sludge outlet is connect by the second sludge carrier pipe road with the sludge concentration tank.

7. Sewage Reuse System as claimed in claim 5, it is characterised in that：The sludge concentration tank is connected with supernatant outlet Pipeline, the supernatant outlet pipeline are connected to the A/O mechanisms.

8. Sewage Reuse System as described in claim 1, it is characterised in that：The UF membrane mechanism has concentrated water outlet, The concentrated water outlet is connected to the hydrolysis acidification mechanism.

9. the Sewage Reuse System as described in claim 1 or 8, it is characterised in that：The UF membrane mechanism includes along sewage stream The logical sequentially connected nanofiltration equipment in direction and reverse osmosis equipment, between the nanofiltration equipment and the membrane biological reaction mechanism It is provided with control valve on sewage flow pipe between sewage flow pipe and the reverse osmosis equipment and the UV disinfecting mechanisms, institute It states UV disinfecting mechanisms outlet end and is connected with clear water maintenance pipeline, the nanofiltration equipment is connected to by the clear water maintenance pipeline other end On sewage flow pipe between the reverse osmosis equipment.