CN218841804U

CN218841804U - Sewage pretreatment carbon source quick separation device

Info

Publication number: CN218841804U
Application number: CN202223589492.1U
Authority: CN
Inventors: 胡伟; 李明; 冯薇; 李颖
Original assignee: Engelbart Wuhan Ecological Technology Co ltd
Current assignee: Engelbart Wuhan Ecological Technology Co ltd
Priority date: 2022-12-31
Filing date: 2022-12-31
Publication date: 2023-04-11
Anticipated expiration: 2032-12-31

Abstract

The utility model relates to a sewage treatment technical field especially indicates a sewage pretreatment carbon source quick separation device, include: the upper part of the sedimentation tank is provided with a water inlet and a water outlet, the lower part of the sedimentation tank is provided with a sewage discharge outlet, the interior of the sedimentation tank is sequentially provided with a mixing zone and an air-lift mixing and sedimentation zone from top to bottom, the bottom of the air-lift mixing and sedimentation zone is provided with an air-lift mechanism, and the side surface of the air-lift mixing and sedimentation zone is provided with a sand inlet; the filler is filled in the mixing zone and is internally provided with a plurality of pores; a flocculant inlet pipe; a water inlet pipe communicated with the water inlet; an opening is formed in the side face of the water inlet pipe and communicated with the flocculating agent inlet pipe; and the micro-sand inlet pipe is communicated with the sand inlet. The utility model can greatly shorten the settling time and improve the treatment effect; wherein the micro-sand can accelerate flocculation and agglomeration to be compact, the volume of floc particles is increased, the retention time of the sedimentation tank is shortened, and the rapid solid-liquid separation is realized, thereby realizing a large amount of continuous water outlet.

Description

Sewage pretreatment carbon source quick separation device

Technical Field

The utility model relates to a sewage treatment technical field especially indicates a sewage pretreatment carbon source quick separation device.

Background

The sewage generated by the large-scale culture places is mainly 'three-high' wastewater with high concentration, high ammonia nitrogen, high suspended matters and great treatment difficulty. The characteristics of large quantity, relative centralization and large processing difficulty cause a plurality of problems in the processing process. The pretreatment method can reduce the load of wastewater pollutants in the subsequent treatment step, and simultaneously prevent large solids or impurities from entering the subsequent treatment link to cause the congestion or damage of treatment equipment. Therefore, appropriate pretreatment is required before biochemical treatment to reduce the subsequent load.

However, the traditional precipitation separation process technology in the prior art has the defects of large floor area, long retention time, long process flow, poor separation effect and the like.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a sewage pretreatment carbon source quick separation device, solve traditional precipitation separation technology among the prior art, have that area is big, dwell time is long, the technological process is long, the separation effect is poor etc. shortcoming, be applicable to other waste waters such as municipal sewage, adopt flocculating agent combination micro-sand and VF filler and air stripping mixed mode, can quick precipitation separation high carbon source's suspended solid and colloid; and the micro sand can be separated and recycled.

In order to solve the technical problem, the utility model provides a following technical scheme:

a sewage pretreatment carbon source rapid separation device comprises:

the upper part of the sedimentation tank is provided with a water inlet and a water outlet, the lower part of the sedimentation tank is provided with a sewage discharge outlet, the interior of the sedimentation tank is sequentially provided with a mixing zone and an air-lift mixing and sedimentation zone from top to bottom, the bottom of the air-lift mixing and sedimentation zone is provided with an air-lift mechanism, and the side surface of the air-lift mixing and sedimentation zone is provided with a sand inlet;

the filler is filled in the mixing zone and is internally provided with a plurality of pores;

a flocculant inlet pipe;

the water inlet pipe is communicated with the water inlet and is used for feeding sewage into the sedimentation tank; an opening is formed in the side face of the water inlet pipe and communicated with the flocculating agent inlet pipe;

and the micro-sand inlet pipe is communicated with the sand inlet and is used for feeding micro-sand into the gas stripping mixing and settling zone.

Preferably, the method further comprises the following steps:

the outlet pipe, its one end is for going out the water end, and the other end passes for blind end and blind end the delivery port stretches into in the sedimentation tank and is located the top of mixing area, the outlet that the interval set up is seted up along its axial direction at the side top of outlet pipe for make the water that comes from mixing area top get into in the outlet pipe and discharge through the outlet.

Wherein preferably, still include:

the sludge-sand separator is provided with an inlet, a sludge outlet and a micro-sand outlet, and the inlet is communicated with the drain outlet of the sedimentation tank through an air stripping pipe;

and the concentration mechanism is communicated with a sludge outlet of the silt separator.

More preferably, the fine sand outlet of the silt separator is communicated with the fine sand inlet pipe through a return pipe.

More preferably, the sludge outlet of the concentration mechanism is communicated with the dehydration mechanism.

Wherein preferably the filler is a VF filler.

Wherein preferably, the pores in the filler are distributed in a plurality of directions including up, down, left, and right.

Wherein preferably, the filler is of a spiral pore structure or a honeycomb structure.

Wherein preferably, the bottom of the sedimentation tank is conical.

The utility model discloses an above-mentioned technical scheme's beneficial effect as follows:

among the above-mentioned scheme, adopt the flocculating agent to carry out preliminary flocculation treatment with sewage earlier, filter in advance and get rid of suspension and particulate matter wherein, the mixed district from top to bottom and the mixed settling zone of air stripping of specific setting again to set up the filler of taking the hole in the mixed district and can carry out the water conservancy and mix, not only evenly water conservancy distribution, impel moreover the rivers rise the in-process because of the situation changes the direction constantly, activated sludge can be held back because of inertial effect, has further improved activated sludge solid-liquid separation efficiency. The utility model solves the problem that the large water volume is difficult to mix, and can efficiently and quickly mix the flocculating agent and the micro-sand during mixing, and the air stripping of the air stripping mechanism assists mixing under the separation action of the filler, thereby greatly shortening the settling time and improving the treatment effect; wherein the micro-sand can accelerate flocculation and agglomeration to be compact, the volume of floc particles is increased, the retention time of the sedimentation tank is shortened, and the rapid solid-liquid separation is realized, thereby realizing a large amount of continuous water outlet. In the preferred scheme, the micro sand can be recycled, and the economic benefit is increased.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of a structure of the packing.

[ reference numerals ]

1. The device comprises a sedimentation tank, 11 parts of a mixing zone, 12 parts of a gas stripping mixing sedimentation zone, 2 parts of a water inlet pipe, 3 parts of a flocculating agent inlet pipe, 4 parts of a micro-sand inlet pipe, 5 parts of a gas stripping mechanism, 6 parts of a water outlet pipe, 61 parts of a water outlet, 7 parts of a mud-sand separator and 8 parts of a concentration mechanism.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, a device for rapidly separating a carbon source in sewage pretreatment comprises:

the sedimentation tank 1 is provided with a water inlet and a water outlet at the upper part and a sewage discharge outlet at the lower part, the interior of the sedimentation tank is sequentially provided with a mixing zone 11 and a gas stripping mixing sedimentation zone 12 from top to bottom, the bottom of the gas stripping mixing sedimentation zone 12 is provided with a gas stripping mechanism 5, and the side surface of the gas stripping mixing sedimentation zone 12 is provided with a sand inlet;

a filler filled in the mixing zone 11 and having a plurality of pores therein;

a flocculant inlet pipe 3;

the water inlet pipe 2 is communicated with the water inlet and is used for feeding sewage into the sedimentation tank 1; an opening is formed in the side face of the water inlet pipe 2 and communicated with the flocculating agent inlet pipe 3;

and a micro-sand inlet pipe 4 which is communicated with the sand inlet and is used for feeding micro-sand into the gas stripping mixing and settling zone 12.

When the device is used, sewage enters the sedimentation tank 1 from the water inlet pipe 2, is mixed with a flocculating agent in the flocculating agent inlet pipe 3 for preliminary flocculation treatment before entering, is deeply mixed in a filler in the mixing area 11 of the sedimentation tank 1, and pores in the filler ensure that the hydraulic power is uniformly distributed and uniformly mixed, so that the treatment effect is promoted; then enters a gas stripping mixing and precipitating area 12 to be gas stripped and mixed with the micro-sand, so as to accelerate the conglomeration and precipitation of flocs and shorten the retention time of a precipitation tank.

The utility model discloses well sewage can be COD waste water, the utility model discloses more be applicable to the processing of COD waste water. In the sewage treatment process, sewage particle COD and colloid COD are respectively separated by a flocculating agent and micro-sand to carry out flocculating precipitation, and meanwhile, part of soluble COD is adsorbed into activated sludge floc and is separated by precipitation to obtain the large water volume up to the standard.

Preferably, the method further comprises the following steps:

and one end of the water outlet pipe 6 is a water outlet end, the other end of the water outlet pipe is a closed end, the closed end penetrates through the water outlet and extends into the sedimentation tank 1 and is positioned above the mixing area 11, and water outlets 61 arranged at intervals are formed in the top of the side surface of the water outlet pipe 6 along the axial direction of the water outlet pipe for enabling water from the upper part of the mixing area 11 to enter the water outlet pipe 6 through the water outlets 61 and to be discharged.

The utility model discloses in, the big composition of flocculate isopycnic in the sewage sinks in sedimentation tank 1, and the water in the sewage is stayed in mixing area 11 tops, gets into in outlet pipe 6 and discharges through the outlet.

Wherein preferably, still include:

the sludge-sand separator 7 is provided with an inlet, a sludge outlet and a micro-sand outlet, and the inlet is communicated with the sewage discharge outlet of the sedimentation tank 1 through an air stripping pipe;

and the concentration mechanism 8 is communicated with the sludge outlet of the silt separator 7.

More preferably, the micro-sand outlet of the silt separator 7 is communicated with the micro-sand inlet pipe 4 through a return pipe. The silt separator 7 is preferably a cyclone silt separator.

More preferably, the sludge outlet of the concentration mechanism 8 is communicated with the sewage raw material pool and then communicated with the water inlet pipe 2. According to the preferred scheme, the SST (sewage sludge treatment) residual sludge is refluxed and mixed with the original sewage, and the mixture is precipitated and separated together, and adsorbs some soluble carbon sources, so that the subsequent full treatment in the sedimentation tank 1 is facilitated.

The utility model adds micro sand to accelerate the conglomeration and sedimentation of flocs, thereby shortening the retention time of the sedimentation tank; the sewage is flocculated, mixed, precipitated and separated to obtain a precipitate mixture, the precipitate mixture is lifted to a sand-mud separator 7 by a gas stripping pipe for sand-mud separation, the separated carbon-rich sludge and water are discharged out of the system, and the separated micro-sand flows back to a gas stripping mixed precipitation zone 12 for recycling so as to prepare for subsequent process application.

Wherein preferably the filler is a VF filler. This preferred scheme more does benefit to the organic matter absorption in the sewage on the filler surface, makes the continuous discharge up to standard of play water. The VF filler is an existing product, for example, the VF filler of the applicant's earlier patent CN106044876B, and is not described herein again.

Wherein preferably the filler is of a spiral pore structure or a honeycomb structure (as shown in figure 2).

Wherein, the bottom of the sedimentation tank 1 is preferably conical.

The utility model provides a traditional sedimentation separation technology among the prior art, there are that area is big, dwell time is long, the technology process is long, the separation effect shortcoming such as poor, applicable in municipal sewage or other waste water, can adopt molysite flocculation or organic flocculant, combines suspended solid and the colloid of little sand quick sedimentation separation high carbon source.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a sewage pretreatment carbon source quick separation device which characterized in that includes:

the upper part of the sedimentation tank is provided with a water inlet and a water outlet, the lower part of the sedimentation tank is provided with a sewage discharge outlet, the interior of the sedimentation tank is sequentially provided with a mixing zone and an air-stripping mixing sedimentation zone from top to bottom, the bottom of the air-stripping mixing sedimentation zone is provided with an air-stripping mechanism, and the side surface of the air-stripping mixing sedimentation zone is provided with a sand inlet;

a flocculant inlet pipe;

2. The rapid carbon source separation device for sewage pretreatment according to claim 1, further comprising:

3. The rapid carbon source separation device for sewage pretreatment according to claim 1, further comprising:

4. The device for rapidly separating the carbon source for sewage pretreatment according to claim 3, wherein a micro-sand outlet of the sand-mud separator is communicated with the micro-sand inlet pipe through a return pipe.

5. The device for rapidly separating the carbon source for sewage pretreatment according to claim 3 or 4, wherein the sludge outlet of the concentration mechanism is communicated with the dehydration mechanism.

6. The apparatus for rapid separation of carbon source for sewage pretreatment according to claim 1, wherein the filler is VF filler.

7. The apparatus for rapid separation of carbon source for sewage pretreatment according to claim 1, wherein the pores in the packing are distributed in a plurality of directions including up, down, left, and right.

8. The apparatus for rapid separation of carbon source for sewage pretreatment according to claim 1, wherein the filler has a spiral pore structure or a honeycomb structure.

9. The rapid carbon source separation device for sewage pretreatment according to claim 1, wherein the bottom of the sedimentation tank is tapered.