CN210796111U

CN210796111U - System for administering black and odorous river course

Info

Publication number: CN210796111U
Application number: CN201921347260.0U
Authority: CN
Inventors: 孙振坤; 刘莉娜; 夏江华
Original assignee: Qingdao Xinyuan Environmental Protection Group Co ltd
Current assignee: Qingdao Xinyuan Environmental Protection Group Co ltd
Priority date: 2019-08-20
Filing date: 2019-08-20
Publication date: 2020-06-19
Anticipated expiration: 2029-08-20

Abstract

The utility model relates to a system for administering black and odorous river course specifically is a system for black and odorous river course is administered to application MBR membrane sewage treatment device, aeration system and construction biological chinampa for river course treatment technical field. A system for treating a black and odorous river, wherein: the sewage is treated by pretreatment, MBR membrane sewage treatment equipment, biological floating island and aeration system to the black and odorous substances in the river channel in sequence to achieve the purpose of sewage treatment. The utility model discloses the environmental capacity of whole water can obviously be improved to the invention, makes to reach water self-purification ability, and the effect is fine, can reduce the treatment cost in black and odorous river course moreover.

Description

System for administering black and odorous river course

Technical Field

The utility model belongs to river sewage treatment field relates to river sewage treatment technology, specifically is a system for treating black and odorous river.

Background

The urban river is used as a life line of a city, has the functions of water body circulation, water and soil conservation, water storage and flood regulation, water quality and oxygen containing and the like, and can also regulate the temperature and humidity and improve the urban climate; the healthy urban water environment is an important guarantee for urban sustainable development. With the continuous acceleration of urbanization and industrialization, the urban river ecological system bears more and more pressure in recent years, and most urban rivers in China are developed into black and odorous rivers at present. In many cities in China, organic pollution of river channels is ubiquitous and increasingly prominent, urban sewage is directly discharged into the river channels, the river reach flowing through cities and towns is seriously polluted, and the phenomenon of seasonal or perennial black and odorous water bodies appears in the water bodies, so that the water environment problem to be solved urgently in the current urban river pollution problem in China is formed.

The black and odorous river channel refers to the invasion of water bodies of the river channel through pollution sources, the invasion of acid rain, household garbage, atmospheric dust and other garbage, and the sludge accumulated at the bottom of the river for a long time and harmful substances released by the sludge are not treated in time; the water body is lack of circulation, the dissolved oxygen is too low, the environment for the survival of aquatic animals and plants is lacked, the water body gradually loses the self-cleaning capability, and the river bottom sludge continuously releases decomposed N, P and other nutrient substances, so that the water body is eutrophicated, the water bloom phenomenon is finally caused, the peculiar smell is generated, and the water body is easy to blacken and turn into the odor.

River regulation refers to the problem of completely solving the problems of black and odorous water body, sediment siltation and the like, and the technical scheme of regulation is customized according to the specific situation of the water body in order to achieve the purposes of comprehensively degrading various pollutants, improving the transparency of the water body, improving the quality grade of the water body and improving the appearance of the water landscape. The main methods for river regulation at present comprise: physical, aeration, chemical, biological. However, these methods have their own disadvantages:

physical method: water diversion and water change and sediment dredging. The diversion and water exchange is not a long-term measure for lakes with serious eutrophication, and the sediment can clear a large amount of nutrients such as organic matters, nitrogen, phosphorus and the like, but can damage the original biological population of the lakes, weaken the self-purification capability of the lakes and bring negative effects on ecological restoration.

An aeration method: the black and odorous substances in the water body can be effectively removed by carrying out oxidation-reduction reaction on the water body sediment and the black and odorous substances in the water body through aeration.

The chemical method comprises the following steps: pollutants in water are removed through flocculation by adding a flocculating agent into the lake, but the method has high investment and high operation cost and is easy to bring new pollutants to the river channel.

The biological method comprises the following steps: mainly adopts a biological complex enzyme technology, a microbial agent and the like. The method has the advantages of small investment and low operation cost.

Disclosure of Invention

In order to solve the technical problems, the invention aims to provide a process system for treating a black and odorous river by applying MBR membrane sewage treatment equipment, an aeration system and a constructed biological floating island.

The scheme of the system is as follows:

the utility model provides a system for administer black smelly river course, sewage carry out the black smelly material reaction of river course through ecological chinampa, high efficiency aeration equipment behind sewage preliminary treatment, sedimentation tank, MBR membrane sewage treatment device and the sewage entering flow river course in proper order and handle: wherein the content of the first and second substances,

a1 sewage pretreatment: the end part of the sewage entering the river channel is provided with a water retaining wall, the water inlet side of the water retaining wall is provided with an interception net, the water retaining wall filters large-particle pollutants in the sewage, one side of the water retaining wall is provided with a groove, and the bottom surface of the water outlet end of the groove is provided with a sandstone layer laid layer by layer; the groove partially deposits the granular pollutants in the sewage; a natural biological membrane system is formed on the surface of the sandstone layer, so that organic matters in the sewage are removed, and meanwhile, a certain removing effect is achieved on ammonia nitrogen and total phosphorus.

A2 sedimentation tank: digging a sedimentation tank at the water outlet end of the groove, arranging a sand slope inclining downwards at the water inlet end of the sedimentation tank, wherein the depth of the sedimentation tank is 2.0-3.0 m, and the sewage enters the sedimentation tank after passing through A1 to realize the filtration of particles in the sewage.

A3 MBR membrane sewage treatment equipment: be provided with the elevator pump in the sedimentation tank, the elevator pump leads to on water piping connection to MBR membrane sewage treatment device, MBR membrane sewage treatment device is inside to be provided with dosing tank and equipment box, is provided with the self priming pump in the equipment box, is provided with the water pipe of play water on the self priming pump, and the water pipe of play water goes out the water outlet end and is connected to the river course that flows.

A4 reaction treatment of black and odorous substances in riverways: the flowing riverway is provided with an ecological floating island, aquatic plants are planted on the ecological floating island, the aquatic plants purify water, a large number of aquatic plants with strong pollution resistance and purification capacity are planted in waste water or polluted water, pollutants in the water are decomposed and converted or enriched into the body through metabolism of the aquatic plants, and oxygen is released through photosynthesis of the aquatic plants to increase the content of dissolved oxygen in the water; aeration pipes are arranged at the bottom and the middle part of the flowing river channel, and the other ends of the aeration pipes are connected to an aeration device; the sewage after A3 enters the flowing river channel, and the reaction of the black and odorous substances at the bottom of the flowing river channel and oxygen is promoted under the action of the aeration device.

The system has the following advantages and beneficial effects: this system is mainly to the black smelly river course of pollution, to the sewage that gets into the river course after the preliminary treatment, get into MBR membrane sewage treatment device, the river course that flows is arranged into after the processing, and ecological chinampa of rethread and high efficiency aeration equipment are to the water bed mud aeration, improve water dissolved oxygen concentration, get rid of stink materials such as ammonia nitrogen, hydrogen sulfide, total phosphorus, volatile organic acid and some heavy metal material in the water, make the water reach the self-purification ability.

Description of the drawings: FIG. 1 is a process flow diagram of the present system;

wherein: 1. a trench; 2. a sandstone layer; 3. a water retaining wall; 4. a sedimentation tank; 5. a water inlet pipe; 6. MBR membrane sewage treatment equipment; 7. MBR membrane; 8. a water outlet pipe; 9. emerging plants; 10. a microbial carrier filler; 11. an aeration pipeline; 12. an aeration device; 13. an aeration system; 14. a lift pump; 15. a self-priming pump; 16. flowing a river channel; 17. a water outlet pipe of the self-priming pump; 18. an ecological floating island.

The specific implementation mode is as follows:

the system is further explained with reference to the drawings;

as shown in fig. 1, a system for treating black and odorous river channel by applying MBR membrane sewage treatment equipment, an aeration system and a biological floating island, sewage is treated by sewage pretreatment, sedimentation tank sedimentation, MBR membrane sewage treatment equipment and sewage entering into a flowing river channel and then is subjected to river channel black and odorous substance reaction treatment by the ecological floating island and a high-efficiency aeration device: wherein the content of the first and second substances,

a1 sewage pretreatment: a water retaining wall 3 similar to a water retaining wall is arranged at the end part of the sewage entering the river channel, an interception net is arranged at one side of the water retaining wall 3, and the water retaining wall 3 filters particles in the sewage; a sand layer 2 laid layer by layer is arranged on the bottom surface of the water outlet end of the groove 1; the groove 1 partially deposits the granular pollutants in the sewage; a natural state biological membrane system is formed on the surface of the sandstone layer 2 to remove organic matters in the sewage.

A2 sedimentation tank: digging a sedimentation tank 4 at the water outlet end of the groove 1, wherein a sand slope inclining downwards is arranged at the water inlet end of the sedimentation tank 4; the depth of the sedimentation tank 4 is 2.0-3.0 meters, and the sewage enters the sedimentation tank 4 after passing through A1, so that the impurities in the sewage are removed by sedimentation; and partial organic matters in the water body can be removed.

A3 MBR membrane sewage treatment equipment: a lifting pump 14 is arranged in the sedimentation tank 4, the lifting pump 14 is connected to MBR membrane sewage treatment equipment 6 through a water pipe 5, a dosing tank and an equipment box are arranged in the MBR membrane sewage treatment equipment 6, and a self-priming pump 15 is arranged on one side of the equipment 6; a water pipe 17 for discharging water is arranged on the self-sucking pump 15; the water outlet end of the water outlet pipe 17 is connected to the flowing river channel 16; sewage enters the MBR membrane sewage treatment equipment 6 for treatment through the power provided by the lifting pump 14 after passing through A2, and the treated sewage flows into the flowing river channel 16 under the action of the self-priming pump 16.

A4 reaction treatment of black and odorous substances in riverways: the flowing riverway 16 is provided with an ecological floating island 18, aquatic plants are planted on the ecological floating island 18 to purify water, a large number of aquatic plants with strong pollution resistance and purification capacity are planted in waste water or polluted water, pollutants in the water are decomposed and converted or enriched into the body through metabolism of the aquatic plants, and oxygen is released through photosynthesis of the aquatic plants to increase the content of dissolved oxygen in the water; aeration pipes 13 are arranged at the bottom and the middle part of the flowing river channel 16, the other ends of the aeration pipes 13 are connected to an aeration device 12, sewage passing through A3 enters the flowing river channel 16, and the reaction of black and odorous substances at the bottom of the flowing river channel and oxygen is promoted under the action of the aeration device 12. The sewage after A4 can reach the IV standard of surface water, and does not pollute the river again. The aeration device 12 can generate high-concentration oxygen to increase the oxygen and H in the bottom mud of the river₂S, FeS, the main harmful substances in the black and stink river are effectively removed.

Municipal sewage which directly flows into the river channel or industrial wastewater which reaches the comprehensive discharge standard can greatly reduce the further pollution of the water body in the flowing river channel after treatment. The system can pump water from a flowing river channel or a static river channel for treatment, improves the environmental capacity of the original river channel, and enhances the self-cleaning capacity of the original river channel. The high-efficiency aeration device can ensure that the oxygen dissolution rate in the water body reaches the highest theoretical value, improve the dissolved oxygen concentration of sludge at the bottom of the river channel and be beneficial to the oxidation-reduction reaction of some pollutants at the bottom. And compared with other river channel treatment methods, the high-efficiency aeration device improves the treatment efficiency of the river channel water body and does not bring new pollutants into the river channel water body. Can realize the combination of the local water body treatment on the upper part of the river and the bottom mud treatment, and has quick effect and less mud production.

Preferably, the mesh number of the filter screen is not less than 30.

Preferentially, the particle size of the sand and stone layer 2 is 30-50 mm, and the sand and stone layer 2 is obliquely arranged, so that the pretreatment effect is improved.

Preferably, the depth of the sedimentation tank 4 is 2.0-3.0 meters, and the retention time of the sewage in the sedimentation tank 4 is more than or equal to 3 days.

Preferentially, the dissolved oxygen in the MBR membrane sewage treatment equipment 6 is more than or equal to 2.5mg/l, and the gas-water ratio is 8:1-12:1, the retention time of the sewage in the MBR membrane sewage treatment equipment 6 is 10.0-12.0 hours, and the purification effect is improved.

Preferentially, the system for treating the black and odorous river channel is characterized in that: according to the method, the aeration intensity in the river channel 16 is greater than or equal to 600m (as square meters).

Although particular embodiments of the present system have been described and illustrated in detail, it should be understood that various equivalent changes and modifications can be made to the above embodiments in accordance with the concept of the present system, and that the resulting functional effects are within the scope of the present system without departing from the spirit of the present disclosure.

Claims

1. The utility model provides a system for administer black and odorous river course which characterized in that: sewage carries out black and odorous material reaction treatment in river course through biological floating island and high efficiency aeration equipment after sewage pretreatment, sedimentation tank, MBR membrane sewage treatment device and sewage get into the river course that flows in proper order: wherein, A1: the method comprises the following steps of pretreatment, wherein a water retaining wall is arranged at the end part of a sewage river channel, a filter screen is arranged on the water inlet side of the water retaining wall, the water retaining wall intercepts large-particle pollutants in the sewage, a sand layer which is laid layer by layer is arranged on the bottom surface of the water outlet end of a groove, the groove partially precipitates the granular pollutants in the sewage, and a natural-state biological membrane system is formed on the surface of the sand layer to remove organic matters in the sewage; a2: a sedimentation tank is dug out at the water outlet end of the groove, and a sand slope inclining downwards is arranged at the water inlet end of the sedimentation tank; the depth of the sedimentation tank is 2.0-3.0 meters, and the sewage enters the sedimentation tank after passing through A1 to realize the filtration of suspended matters in the sewage; a3: the integrated MBR membrane sewage treatment device is characterized in that a sewage lifting pump is arranged in the sedimentation tank and is connected to the integrated MBR membrane sewage treatment device through a water pipe, a dosing tank and an equipment box are arranged inside the integrated MBR membrane sewage treatment device, and a self-priming pump is arranged outside the equipment box; a water outlet pipe is arranged on the self-priming pump; the water outlet end of the water outlet pipe is connected to the flowing river channel; a4: performing black and odorous substance reaction treatment on a riverway, wherein the flowing riverway is provided with an ecological floating island, aquatic plants are planted on the ecological floating island to purify water, a large number of aquatic plants with strong pollution resistance and purification capacity and the like are planted in waste water or polluted water, so that the aquatic plants decompose and convert or enrich pollutants in water into the body through metabolism of the aquatic plants, and simultaneously, oxygen is released through photosynthesis of the aquatic plants to increase the content of dissolved oxygen in water; and aeration pipes are arranged at the bottom and the middle part of the flowing river channel, the other ends of the aeration pipes are connected to an aeration device, sewage passing through A3 enters the flowing river channel, and the reaction of black and odorous substances at the bottom of the flowing river channel and oxygen is promoted under the action of the ecological floating island and the aeration device.

2. The system for treating the black and odorous river channel according to claim 1, wherein: the mesh number of the filter screens is more than or equal to 30.

3. The system for treating the black and odorous river channel according to claim 1, wherein: the particle size of the sand and stone layer is 30-50 mm, and the sand and stone layer is arranged in an inclined mode.

4. The system for treating the black and odorous river channel according to claim 1, wherein: the depth of the sedimentation tank is 2.0-3.0 meters, and the retention time of the sewage in the sedimentation tank is not less than 3 days.

5. The system for treating the black and odorous river channel according to claim 1, wherein: the dissolved oxygen in the MBR membrane sewage treatment equipment is more than or equal to 2.5mg/l, the gas-water ratio is 8:1-12:1, and the residence time of sewage in the integrated membrane processor is 10.0-12.0 hours.

6. The system for treating the black and odorous river channel according to claim 1, wherein: the aeration intensity in the river channel is more than or equal to 600m³/(㎡.s)。