CN106915871B

CN106915871B - Reclaimed water reuse sewage treatment device

Info

Publication number: CN106915871B
Application number: CN201710164385.9A
Authority: CN
Inventors: 蔡金傍; 苏良湖; 陈玉东; 孙旭; 赵志强; 陈梅; 刘臣炜; 张龙江; 杭小帅; 何斐; 王伟民
Original assignee: Nanjing Institute of Environmental Sciences MEP
Current assignee: Nanjing Institute of Environmental Sciences MEP
Priority date: 2017-03-20
Filing date: 2017-03-20
Publication date: 2022-03-25
Anticipated expiration: 2037-03-20
Also published as: CN106915871A

Abstract

The invention relates to an environmental protection device, in particular to a sewage treatment device for reclaimed water reuse, comprising a primary treatment pool and a secondary treatment pool. The primary treatment pool includes a water inlet area, a primary sedimentation area and a water outlet area; a filter is arranged at the bottom of the water inlet area. The grid, the lower part of the filter grid is the primary sedimentation area, an overflow outlet is arranged between the primary sedimentation area and the water outlet area, and there is a water outlet at the top of the water outlet area, and the water outlet is located above the secondary treatment pool, which is provided with reclaimed water Export. The reclaimed water reuse sewage treatment device provided by the present invention can select different process combinations according to the water quality requirements, and can be equipped with filtration, activated carbon adsorption, flotation, coagulation and sedimentation activated sludge methods in the primary treatment tank and the secondary treatment tank respectively. , contact oxidation method, biological turntable and other layout patterns, strong versatility, compact structure, small footprint.

Description

Reclaimed water reuse sewage treatment device

Technical Field

The invention relates to an environment-friendly device, in particular to a sewage treatment device for reclaimed water reuse.

Background

The term "reclaimed water" is used in relation to both the overflow (feed water) and the underflow (discharge water). The reclaimed water reuse technology is that after the domestic waste water (bath, washing, clothes washing, kitchen and toilet) of residential area is treated in a centralized way, the reclaimed water can be reused for greening irrigation, vehicle flushing, road flushing, household toilet flushing and the like of residential area according to a certain standard, thereby achieving the purpose of saving water. The reclaimed water treatment process is generally divided into 3 types according to the treatment method: 1. physical treatment methods, including membrane filtration and evaporative heat methods: 2. physical and chemical methods including sand filtration, activated carbon adsorption, flotation, coagulating sedimentation and the like. 3. Biological treatment methods such as an activated sludge method, a contact oxidation method, and a biological rotating disk are generally used.

Because of the diversity of the reclaimed water treatment methods, the reclaimed water treatment equipment also has multiple corresponding equipment, so that the same reclaimed water treatment equipment can only adopt one set of corresponding process and is difficult to be changed into other processes.

Disclosure of Invention

In order to solve the above problems, the present invention provides a reclaimed water treatment apparatus that can use a variety of reclaimed water treatment processes. The specific technical scheme is as follows:

the reclaimed water reuse sewage treatment device comprises a primary treatment tank and a secondary treatment tank, wherein the primary treatment tank comprises a water inlet area, a primary sedimentation area and a water outlet area; the water inlet area is provided with a plurality of water inlets, the bottom of the water inlet area is provided with a filtering grid, a primary sedimentation area is arranged below the filtering grid, an overflow outlet is arranged between the primary sedimentation area and the water outlet area, the overflow outlet comprises an upper baffle and a lower baffle, the upper baffle and the lower baffle are parallel to each other and are vertically arranged between the primary sedimentation area and the water outlet area, the upper baffle is positioned at one side of the primary sedimentation area, a channel is reserved between the bottom of the primary sedimentation area and the bottom of the primary sedimentation area, the bottom of the lower baffle is connected with the bottom of the primary sedimentation area, the top of the lower baffle is lower than the top of the upper baffle, an overflow outlet is arranged between the upper baffle and the lower baffle, and water enters the overflow outlet from the primary sedimentation area through the channel at the bottom of the upper baffle and then overflows into the water outlet area from the top of the lower baffle; the top of the water outlet area is provided with a water outlet which is positioned above the secondary treatment tank, and the secondary treatment tank is provided with a reclaimed water outlet.

The primary sedimentation zone is internally provided with a plurality of inclined plates which are parallel to each other, the inclined directions of the inclined plates are that the higher end of the inclined plates is close to the upper baffle plate, and the lower end of the inclined plates is far away from the upper baffle plate.

The bottom of the primary sedimentation zone and the bottom of the water outlet zone are also provided with sedimentation standing zones, partition plates are arranged between the sedimentation standing zones and the primary sedimentation zone as well as between the sedimentation standing zones and the water outlet zone, through holes are formed in the partition plates, and a sludge discharge port is formed in the bottom of the sedimentation standing zone.

The water outlet is connected with a spray pipe, a packing roller is arranged below the spray pipe, the central shaft of the packing roller is connected with a driving device, and the lower half part of the packing roller is immersed in a secondary treatment pool.

Compared with the prior art, the invention has the following beneficial effects:

the reclaimed water reuse sewage treatment device provided by the invention can select different process combinations according to the water quality requirement, can be respectively provided with a plurality of arrangement patterns of filtration, activated carbon adsorption, flotation, a coagulating sedimentation activated sludge method, a contact oxidation method, a biological rotating disc and the like in the primary treatment tank and the secondary treatment tank, and has strong universality, compact structure and small occupied area.

Drawings

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

Detailed Description

The invention will now be further described with reference to the accompanying drawings.

Example 1

As shown in fig. 1, the sewage treatment device for recycling reclaimed water comprises a primary treatment tank 1 and a secondary treatment tank 16, wherein the primary treatment tank 1 comprises a water inlet area 2, a primary settling area 8 and a water outlet area 10; intake district 2 be provided with a plurality of water inlets, intake that can be even to the rivers of intaking can slow down, 2 bottoms in the district of intaking be provided with filtering grid 3, retain debris and floater of large granule, filtering grid 3 below for sinking district 8 just, sink district 8 just and go out and be provided with overflow outlet 9 between district 10, the sewage after preliminary sedimentation gets into out the water district from overflow outlet in sinking district 8 just.

The overflow outlet 9 comprises an upper baffle 18 and a lower baffle 17, the upper baffle 18 and the lower baffle 17 are parallel to each other and vertically arranged between the primary sedimentation zone 8 and the water outlet zone 10, the upper baffle 18 is positioned at one side of the primary sedimentation zone 8, a channel is reserved between the bottom of the primary sedimentation zone 8 and the bottom of the primary sedimentation zone 8, the bottom of the lower baffle 17 is connected with the bottom of the primary sedimentation zone 8, the top of the lower baffle 17 is lower than the top of the upper baffle 18, the overflow outlet 9 is arranged between the upper baffle 18 and the lower baffle 17, water enters the overflow outlet 9 from the primary sedimentation zone 8 through the channel at the bottom of the upper baffle 18 and then overflows from the top of the lower baffle 17 into the water outlet zone 10; the sewage stays in the water outlet zone 10, the water outlet zone 10 can be used as a buffer tank and also can be used as a secondary sedimentation tank, the top of the water outlet zone 10 is provided with a water outlet 11, the water outlet 11 is positioned above a secondary treatment tank 16, and the secondary treatment tank 16 is provided with a reclaimed water outlet 14. The settled wastewater, mainly freed of suspended matter, is then sent to a secondary treatment tank 16 for further treatment.

The primary sedimentation zone 8 is internally provided with a plurality of inclined plates 4, the inclined plates 4 are parallel to each other, the inclined directions of the inclined plates 4 are that the higher end of each inclined plate 4 is close to the upper baffle 18, and the lower end of each inclined plate 4 is far away from the upper baffle 18. The inclined plate 4 serves to improve the efficiency of the precipitation separation. The water flow can slow down the water flow on the inclined plate 4, which is beneficial to the precipitation of suspended matters.

The inclined plate 4 can also be used as a carrier of the biological membrane, and the membrane is hung on the inclined plate 4. Or the inclined plate 4 is coated with a catalyst to perform oxidation catalytic treatment.

Example 2

On the basis of embodiment 1, the method also has the following technical characteristics: the bottom of the primary sedimentation zone 8 and the bottom of the water outlet zone 10 are also provided with a sedimentation standing zone 7, a partition plate 6 is arranged between the sedimentation standing zone 7 and the primary sedimentation zone 8 as well as between the sedimentation standing zone 7 and the water outlet zone 10, a through hole is arranged on the partition plate 6, and the bottom of the sedimentation standing zone 7 is provided with a sludge discharge port 5. After the suspended matters on the upper part are precipitated, the suspended matters fall into the precipitation standing area 7 from the through holes under the action of gravity, meanwhile, part of turbid sewage also enters into the precipitation standing area 7, and the precipitation standing area 7 is relatively independent and is not influenced by the water flow of the water inlet and outlet on the upper part, so that the sewage is similar to standing at the position, and the separation efficiency is improved.

Sand is filled above or below the settling and standing area 7 for sand filtration.

The water outlet 11 is connected with a spray pipe 12, a packing roller 13 is arranged below the spray pipe 12, a central shaft 15 of the packing roller 13 is connected with a driving device, and the lower half part of the packing roller 13 is immersed in a secondary treatment tank 16. The stuffing in the stuffing roller 13 can be treated by selecting corresponding stuffing according to the pollutant of the sewage, the stuffing can be catalyst, active carbon, and can also be used as microorganism carrier, namely, the function of the stuffing roller 13 is various, and the function of the stuffing roller 13 is selected according to the water quality and the treatment process. The stuffing drum 13 rotates about its central axis 15, immersing one revolution of the stuffing drum 13 in the sewage in turn. The rolling of the filling roller 13 can turn over the filling to prevent the filling from being blocked. In addition, the spray pipe 12 can play a role similar to aeration, and part of COD in the sewage can be taken out.

Claims

1. Reclaimed water reuse sewage treatment device, comprising a primary treatment pool (1) and a secondary treatment pool (16), characterized in that the primary treatment pool (1) comprises a water inlet area (2), a primary sedimentation area (8) and a water outlet area (10); the water inlet area (2) is provided with a plurality of water inlets, the bottom of the water inlet area (2) is provided with a filter grid (3), and the filter grid Below the grid (3) is a primary settling zone (8), an overflow outlet (9) is provided between the primary settling zone (8) and the water outlet zone (10), and the overflow outlet (9) includes an upper The baffle plate (18) and the lower baffle plate (17), the upper baffle plate (18) and the lower baffle plate (17) are parallel to each other, and are installed vertically between the primary settlement area (8) and the water outlet area (10). During the time, the upper baffle plate (18) is located on the side of the primary settling zone (8), the bottom and the bottom of the primary settling zone (8) are left with a channel, and the bottom of the lower baffle plate (17) is connected to the primary settling zone (8). ) bottom and the bottom of the water outlet area (10) are connected, the top of the lower baffle (17) is lower than the top of the upper baffle (18), and the overflow outlet is between the upper baffle (18) and the lower baffle (17). (9), the water enters the overflow outlet (9) from the primary settling area (8) through the channel at the bottom of the upper baffle (18), and then overflows from the top of the lower baffle (17) to the water outlet area (10); The top of the water outlet area (10) has a water outlet (11), the water outlet (11) is located above the secondary treatment tank (16), and the secondary treatment tank (16) is provided with a reclaimed water outlet (14). );

The bottom of the primary settling zone (8) and the water outlet zone (10) is also provided with a precipitation rest zone (7), the precipitation rest zone (7), the primary settling zone (8), and the water outlet zone (10) A partition plate (6) is arranged between them, the partition plate (6) is provided with through holes, and the bottom of the precipitation zone (7) is provided with a sludge discharge port (5);

A plurality of inclined plates (4) are arranged in the primary settling zone (8), the plurality of inclined plates (4) are parallel to each other, and the inclined direction of the inclined plates (4) is such that the inclined plates (4) are relatively parallel to each other. The high end is close to the upper baffle (18), and the lower end is far away from the upper baffle (18);

The water outlet (11) is connected with a spray pipe (12), a packing drum (13) is arranged below the spray pipe (12), and the central axis (15) of the packing drum (13) is connected to the drive The device is connected, and the lower half of the filling drum (13) is immersed in the secondary treatment tank (16).