CN106698825A - River enclosure pollution prevention and water diversion in-situ purification treatment method and system - Google Patents

Abstract

The invention relates to an in-situ purification treatment method and system for river channel enclosure, sewage diversion and diversion, which uses a sewage interception and enclosure device to quickly and thoroughly intercept sewage from a sewage outlet, forms a sewage interception and diversion purification tank on the river bank, and intercepts sewage and diversion In the purification tank, the bottom microporous aeration device and floating plants are used to purify the sewage in situ during the diversion process, and then lead it to the downstream centralized sewage purification area for enhanced purification and elimination of pollutants, so as to realize the cleanliness of the main treatment section of the river. Complete sewage interception and water quality improvement. The method and system of the present invention do not need to drain the river water during construction, and can quickly completely intercept and centrally dispose of pollutants such as black and odorous substances and nitrogen and phosphorus in the river, and are suitable for domestic sewage and farmland wastewater along river banks in cities and rural areas The black and smelly river channel treatment project that directly discharges into the river through the sewage outlet.

Description

A method and system for in-situ purification treatment of river channel enclosure, interception, sewage diversion and diversion

technical field

The invention belongs to the technical fields of sewage treatment, ecological restoration, etc., and specifically relates to in-situ purification technology and ecological restoration technology of black and odorous rivers.

Background technique

The water environment quality of my country's rivers has declined sharply in the past 20 years. The water quality of most rivers is inferior to Class V. Water pollution and ecological degradation are very serious. Perennial black and odorous water phenomenon. This not only hinders the sustainable development of economy and society, but also seriously affects the health and life of coastal residents. Eliminating the black and odorous phenomenon of the river and restoring the ecological function of the river has become one of the key tasks in the process of social sustainable development.

In recent years, China has attached great importance to the treatment of black and odorous rivers, and is committed to the research and practice of treatment technologies. At present, the main river treatment technologies in China are: physical methods, including artificial aeration, sediment dredging and water diversion, etc., through Improve water oxidation, control endogenous pollution and dilute pollutants to alleviate water black and odor, but can not guarantee long-term stable improvement of water quality; chemical methods mainly include flocculation, chemical oxidation, etc., such as the use of iron salt and aluminum salt coagulant can Effectively improve water transparency and adsorb dissolved phosphorus. CaO ₂ and MgO ₂ can increase dissolved oxygen, help organic matter degradation and ammonia nitrogen conversion, and ease the release of phosphorus from sediment to overlying water. This is used in patent 201610320572.7 Method, in the patent document 201610076802.X, a nano-bubble machine is used to provide dissolved oxygen. The generated bubbles have a small particle size and hardly cause disturbance to the water body. The generated bubbles can be attached to the surface of the sediment, and the oxygen mass transfer rate is high; Ecological method, patent document 201510845266.0 Hanging film on early carbon fiber ecological grass, and spraying cultivated indigenous microorganisms to the beginning of different water sections of black and odorous rivers. This is the use of biofilm technology and microbial enhancement technology. The microorganisms on the biofilm It can absorb and degrade pollutants and promote the chemical reaction process of pollutants. Patented invention 201610006876.6 provides a method for constructing a stable submerged vegetation community. The combination of Elodea-Littleweed is used to establish evergreen submerged vegetation. The companion species of plants are hornwort, chrysoprina spica, and hydrilla verticillium, and the lifting floating bed is adopted, and the depth of the floating bed can be adjusted according to the transparency of the water body. This is the use of plant purification technology. Currently, the widely used technologies include aquatic plant oxidation pond, Ecological floating bed, etc.

However, at present, most of the patented technologies for river treatment focus on in-situ purification and repair, and there are few technologies for diversion, interception and disposal of exogenous pollutants. Patent document 201510847564.3 involves the diversion and purification of sewage entering the river. According to the location, it is divided into sewage diversion and collection area, sewage deep purification area, water ecosystem construction and water quality purification area, and treatment measures are taken for the three areas respectively. The sewage diversion and collection area is wide on both sides of the river. The area of 0.5 ~ 2m uses PVC microporous membrane to collect and divert sewage, but the use of PVC microporous membrane is easy to cause blockage, needs to be replaced frequently, and the service life is not long, and the specific laying and connection of pipelines are not detailed. .

In view of the above technical background, a fast and complete sewage interception method has been invented for the treatment projects of black and odorous rivers where domestic sewage and farmland wastewater are directly discharged into the river through sewage outlets in cities and rural areas, where the sewage is not completely intercepted and the sewage flow is large. , without draining the river and laying sewage pipes, use floating bodies and waterproof cloths on both sides of the river to collect and divert all the sewage entering the river to the deep centralized purification area, and then use the combination of physical aeration, plant purification and microorganisms The sewage is treated in this way, the sewage is completely intercepted, the purification effect is long-term and stable, the engineering volume is small, and it is friendly to the environment.

Contents of the invention

The purpose of the present invention is to overcome the defects of the prior art, and provide a method and system for in-situ purification treatment of river channel enclosure, interception, sewage diversion, said method and system can quickly and thoroughly intercept and purify the sewage entering the river, and at the same time In-situ elimination of pollutants is suitable for black and odor elimination, water quality improvement and ecological restoration projects in black and odorous rivers with serious external source pollution.

In order to realize the above-mentioned technical purpose, the present invention adopts following technical scheme:

An in-situ purification treatment system for river channel enclosure, interception, sewage diversion, including a sewage in-situ purification area and a sewage centralized purification area; the sewage in-situ purification area and the sewage centralized purification area are connected, and the sewage in-situ purification area is arranged upstream of the river to be treated In the river section, a sewage interception diversion purification system is installed in the sewage in-situ purification area, the sewage centralized purification area is arranged in the downstream section of the river to be treated, and a sewage centralized purification system is installed in the sewage centralized purification area;

The sewage interception diversion purification system includes a sewage interception enclosure system, a bottom microporous aeration system and a combined ecological floating island; the sewage interception enclosure system and the bottom microporous aeration system are arranged along the river bank, and the combined ecological floating island is arranged on the water;

The sewage intercepting enclosure system includes sewage intercepting branch pipes and sewage intercepting enclosures; the sewage intercepting enclosures are arranged along the river bank, and the river bank sewage outlet is fenced to form a tank structure with the river bank and the bottom of the river. That is, the sewage interception diversion purification tank; the sewage interception branch pipe is connected to the sewage outlet, and the sewage flowing out of the sewage outlet is diverted to the sewage interception diversion purification tank, and floating plants are planted in the sewage interception diversion purification tank, and the sewage in the purification tank; The sewage interception enclosure device is composed of a floating body, a waterproof cloth and a gabion. The floating body floats on the water surface, and the gabion sinks into the bottom mud of the river.

The bottom microporous aeration system includes an aerator, an aeration main pipe, an aeration branch pipe and a microporous aeration device; the aerator ventilates into the aeration main pipe through a ventilation pipe; the aeration main pipe is laid along the river bank, and through a tee The tube is connected to one end of the aeration branch pipe; the other end of the aeration branch pipe is connected to the microporous aeration device;

The combined ecological floating island includes floating plants and elastic fillers; the floating plants are planted on a plant floating bed composed of a circular frame and a net; the elastic filler is connected to the net and suspended under the plant floating bed; each ecological floating island is fixed on a bamboo pile. above the surface of the river;

The sewage in the sewage in-situ purification area is intercepted and purified in situ through the sewage interception diversion purification system, and the sewage diverted to the downstream of the river through the sewage interception diversion purification tank enters the sewage centralized purification area, and is concentratedly purified through the sewage centralized purification system ;

The centralized sewage purification system includes a bottom microporous aeration system and a combined ecological floating island; the bottom microporous aeration system, the combined ecological floating island structure, and the layout are the same as the sewage interception, diversion and purification system; the two bottom microporous The aeration system shares the aerator and the aeration supervisor.

Wherein, moso bamboo piles are installed to fix the floating body every 10-30 meters on the sewage intercepting enclosure device, and the height of the moso bamboo piles is higher than the highest water level of the river course.

The floating body is made of circular plastic foam with a length of 50-80 cm and a diameter of Φ10-30 cm, and the floating bodies are connected by a wrapped waterproof cloth.

The floating plants are selected from foxtail algae or pachymos, and the coverage of the floating plants in the sewage interception, diversion and purification tank is more than 80%.

The microporous aeration device is composed of a microporous aeration tube and a steel bar. The steel bar is used to make a conical tower-shaped support, and the microporous aeration tube is wound on it to form a microporous aeration device. Specifically, the steel bar is bent into a The annular structure spirals up in a spring shape, and the diameter of the annular structure decreases from bottom to top, and the surroundings are connected and fixed by steel bars to form a support with a conical tower structure. The microporous aeration tube is wound on the support; the top layer of the support is the end with the smallest ring diameter. It is connected with the aeration branch pipe; the ring structure at the bottom of the support is welded and fixed with a cross-shaped iron sheet. Preferably, the stent ring structure has 4 layers in total, and the microporous aeration tubes are wound 3 layers from the top layer downwards, the diameter of the ring structure at the bottom layer is Φ500, and the diameter of the ring structure at the top layer is Φ150; the air flow rate of the microporous aeration device is, each The microporous aeration device is 5m ³ /h, and the installation density of the microporous aeration device is 1 piece/5m ² .

The coverage of the combined ecological floating islands in the sewage in-situ purification area is 30% to 50% of the water surface area, and the coverage of the combined ecological floating islands in the sewage centralized purification area is 50% to 60% of the water surface area; each combination The ecological floating island is fixed with three moso bamboo piles in a triangular direction, and the part of the top of the moso bamboo piles above the water surface is higher than the highest water level of the river.

The construction method of the combined ecological floating island is as follows: use PE pipes or PVC pipes to form a circular frame, cover with a layer of polyethylene net to form a plant floating bed; connect the elastic filler to the polyethylene net and hang it under the plant floating bed, Then the floating plants are placed in the plant floating bed to fill up; the floating plants are selected from viridiflora, pachymos or water peanuts.

Another object of the present invention is to provide an in-situ purification treatment method for river channel enclosure, interception, sewage diversion, and diversion. The method of the present invention is realized through the following technical scheme:

An in-situ purification treatment method for river channel enclosure, interception, sewage diversion, specifically comprising the following steps:

(1) Divide the river to be treated into an in-situ sewage purification area and a centralized sewage purification area; The downstream section of the river to be treated;

Sewage interception and isolation devices are arranged on both sides of the river where the sewage in-situ purification area is located 1.0m~2.0m away from the bank. A tank structure is formed between the sewage interception and isolation device, the river bank, and the bottom of the river, that is, sewage interception, diversion and purification Find the sewage outlet along the coast, and install a sewage interception branch pipe at the sewage outlet, so that the sewage discharged from the sewage outlet flows into the sewage interception diversion purification tank through the sewage interception branch pipe; plant floating plants in the sewage interception diversion purification tank, and the purification tank sewage;

Wherein, the sewage intercepting enclosure device is composed of a floating body, a waterproof cloth and a gabion. The floating body floats on the water surface, and the gabion sinks into the bottom mud of the river. Separation; Moso bamboo piles are installed every 10-30 meters on the sewage interception enclosure to fix the floating body, and the height of the moso bamboo piles is higher than the highest water level of the river;

(2) Lay out the bottom microporous aeration system in the river where the sewage in-situ purification area and the centralized sewage purification area are located, including aerators, aeration supervisors, aeration branch pipes and microporous aeration devices; install aerators on the inner side of the river bank , the aerator ventilates into the aeration main pipe through the air pipe; the aeration main pipe is laid along the river bank, and is connected to one end of the aeration branch pipe through a three-way pipe; the other end of the aeration branch pipe is connected to a microporous aeration device; the sewage in-situ purification area and The centralized sewage purification area shares the aerator and the aeration supervisor;

(3) A combined ecological floating island is arranged on the water surface of the river where the sewage in-situ purification area and the centralized sewage purification area are located. The combined ecological floating island includes floating plants and elastic fillers; the floating plants are planted on a plant floating bed composed of a circular frame and a net ; The elastic filler is connected with the net and suspended under the plant floating bed; each ecological floating island is fixed above the water surface of the river with moso bamboo stakes;

(4) Put biological zeolite on the surface of the sediment in the concentrated sewage purification area to adsorb ammonia nitrogen;

(5) After all the facilities in the above steps are laid out, run the bottom microporous aeration system to increase oxygen in the water body, manage and protect the combined ecological floating island, and spray microbial agents in the centralized sewage purification area during the operation of sewage treatment to regulate water quality.

Wherein, the microporous aeration device is composed of a microporous aeration tube and a steel bar, and the steel bar is used to make a conical tower-shaped support, and the microporous aeration tube is wound on it to form a microporous aeration device, specifically: the steel bar It is bent into a ring structure and spirals up like a spring. The diameter of the ring structure decreases from bottom to top, and the surroundings are fixed with steel bars to form a support with a conical tower structure. The microporous aeration tube is wound on the support; One end of the bracket is connected to the aeration branch pipe; the ring structure at the bottom of the bracket is welded and fixed with a cross-shaped iron sheet; the ring structure of the bracket has 4 layers in total, and the microporous aeration tube is wound 3 layers from the top layer to the bottom. The structure diameter is Φ150; the air flow rate of the microporous aeration device is 5m ³ /h for each microporous aeration device, and the installation density of the microporous aeration device is 1 piece/5m ² .

The coverage of the combined ecological floating islands in the sewage in-situ purification area is 30% to 50% of the water surface area, and the coverage of the combined ecological floating islands in the sewage centralized purification area is 50% to 60% of the water surface area; each combined ecological floating island The island is fixed in a triangular direction with three moso bamboo piles, and the part of the top of the moso bamboo piles above the water surface is higher than the highest water level of the river; the construction method of the combined ecological floating island is: use PE pipes or PVC A layer of polyethylene mesh is covered to form a plant floating bed; the elastic filler is connected to the polyethylene mesh and suspended under the plant floating bed, and then the floating plants are placed in the plant floating bed to fill it up; Water peanuts.

The method and system of the present invention can completely intercept sewage in the main treatment section of the river without draining the river and laying sewage pipes, which reduces the amount of engineering construction, saves construction time, cuts off pollution sources, and quickly cleans the river. Pollutants such as black and odorous substances and nitrogen and phosphorus are completely intercepted and disposed of in a centralized manner. It is suitable for urban and rural domestic sewage along the banks of the river, and farmland wastewater is directly discharged into the river through the sewage outlet. Difficult black and smelly river course management project.

Description of drawings

Fig. 1 is a schematic diagram of the plane structure of the in-situ treatment and purification system for river channel enclosure, interception, diversion and diversion of the present invention; wherein 1 is the river course to be treated; 2 is the sewage in-situ purification area; 3 is the concentrated sewage purification area; 4 is the sewage interception enclosure Device; 5 is the sewage intercepting branch pipeline; 6 is the sewage outlet; 7 is the sewage intercepting diversion purification tank; 8 is the aerator; 9 is the main aeration pipeline; 10 is the aeration branch pipeline; 11 is the microporous aeration device 12 is a ventilation pipe; 13 is a three-way pipe; 14 is a combined ecological floating island.

Fig. 2 is a schematic diagram of the device structure used for the sewage intercepting enclosure; 41 is a gabion; 42 is a floating body; 43 is a waterproof cloth; 44 is a steel rope;

Fig. 3 is a schematic diagram of the device structure of the microporous aeration device; 111 is a microporous aeration pipe; 112 is a steel bar; 113 is an iron sheet.

Fig. 4 is a structural schematic diagram of a combined ecological floating island; 141 is a floating plant; 142 is an elastic filler; 143 is a circular frame; 144 is a net; 145 is a moso bamboo pile.

detailed description

The technical solution of the present invention will be further described below in conjunction with the description of the drawings and specific embodiments.

Example 1

This embodiment illustrates the specific implementation of the system of the present invention.

As shown in Figure 1, the in-situ purification treatment system for river channel enclosure, interception, sewage diversion and diversion, the waterway 1 to be treated is divided into sewage in-situ purification area 2 and sewage centralized purification area 3; sewage in-situ purification area 2 and sewage centralized purification area 3 are connected, the sewage in-situ purification area 1 is arranged in the upstream section of the river 1 to be treated, the sewage in-situ purification area 2 is equipped with a sewage diversion purification system, and the sewage centralized purification area 3 is arranged in the downstream section of the river 1 to be treated, and the sewage A centralized sewage purification system is set up in the centralized purification area 3;

The sewage interception diversion purification system includes a sewage interception enclosure system, a bottom microporous aeration system and a combined ecological floating island 14; the sewage interception enclosure system and the bottom microporous aeration system are arranged along the river bank, and the combined ecological floating island 14 deployed on the water surface;

The sewage interception enclosure system includes the sewage interception branch pipe 5 and the sewage interception enclosure device 4; the sewage interception enclosure device 4 is arranged along the river bank, and the sewage outlet 6 of the river bank is fenced in, forming a gap with the river bank and the bottom of the river channel. The structure of the tank body, that is, the sewage interception diversion purification tank 7; the sewage interception branch pipe 5 is connected to the sewage outlet 6, and the sewage flowing out of the sewage outlet 6 is diverted to the sewage interception diversion purification tank 7, and the sewage interception diversion purification tank 7 Planting floating plants, the sewage in the purification tank, the floating plants are selected from foxtail algae or copper chrysalis, and the coverage of floating plants in the sewage interception diversion purification tank is more than 80%; 43 and gabion 41, the floating body 42 floats on the water surface, the gabion 41 sinks into the river bottom mud, and the upper and lower ends of the waterproof cloth 43 are respectively wrapped by steel ropes 44 to connect the floating body 42 and the gabion 41 to form an enclosure; The specific structure of the device is shown in FIG. 2 , and the floating bodies 42 are connected through a floating body connection 45 . Moso bamboo piles are installed every 10 to 30 meters to fix the floating body 42 on the described sewage intercepting enclosure device 4, and the height of the moso bamboo piles is higher than the highest water level of the river course; the described floating body 42 selects a circular plastic foam with a length of 50 to 80 cm and a diameter of Φ10 to 30 cm. , the floating bodies 42 are connected by wrapped tarpaulins.

The bottom microporous aeration system includes an aerator 8, an aeration main pipe 9, an aeration branch pipe 10 and a microporous aeration device 11; the aeration machine 9 ventilates into the aeration main pipe 9 through the ventilation pipe 12; 9 is located in the sewage interception diversion purification tank 7 and laid along the river bank, and is connected to one end of the aeration branch pipe 10 through the tee pipe 13; the other end of the aeration branch pipe 10 is connected to the microporous aeration device 11; In the sewage diversion purification tank 7, a part passes through the floating body connection 45 and enters the main river channel; the microporous aeration device 11 is used for increasing oxygen, and the structure of the microporous aeration device 11 in the present embodiment is as shown in Figure 3. The porous aeration device 11 is composed of a microporous aeration tube 111 and a steel bar 112, and the steel bar 112 is used to make a conical tower-shaped support, and the microporous aeration tube 111 is wound on it to form the microporous aeration device 11, specifically: The steel bar 112 is bent into a ring structure and spirals up like a spring. The diameter of the ring structure decreases successively from bottom to top, and the surroundings are connected and fixed by steel bars 112 to form a bracket with a conical tower structure. The microporous aeration tube 111 is wound on the bracket; the top layer of the bracket, That is, the end with the smallest annular diameter is connected to the aeration branch pipe 10; the annular structure at the bottom of the support is welded and fixed with a cross-shaped iron sheet 113 . Wherein, the ring structure of the bracket has 4 layers in total, and the microporous aeration tube 111 is wound 3 layers from the top layer downwards. The diameter of the ring structure at the bottom layer is Φ500, and the diameter of the ring structure at the top layer is Φ150; A microporous aeration device is 5m ³ /h, and the installation density of the microporous aeration device 11 is 1 piece/5m ² . .

The structure of the combined ecological floating island 14 is shown in Figure 4, including floating plants 141 and elastic fillers 142; the floating plants 141 are planted on the plant floating bed formed by the circular frame 143 and the net 144; Below the plant floating bed; each ecological floating island 14 is fixed above the water surface of the river channel with moso bamboo stakes 145 . Among them, the coverage of the combined ecological floating island 14 in the sewage in-situ purification area 2 is 30% to 50% of the water surface area, and the coverage of the combined ecological floating island 14 in the sewage centralized purification area 3 is 50% to 60% of the water surface area Each combined ecological floating island 14 is fixed in a triangular direction with 3 moso bamboo piles 145, and the part above the water surface of the moso bamboo pile 145 is higher than the highest water level of the river course. In this embodiment, the construction method of the combined ecological floating island 14 is as follows: use PE pipes or PVC pipes to encircle a circular frame 143, cover with a layer of polyethylene net 144 to form a plant floating bed; space the elastic filler 142 with the polyethylene net 144 The floating plants 141 are placed under the plant floating bed and filled up; the floating plants 141 are selected from green foxtail, papaya or water peanut.

The sewage in the sewage in-situ purification area 2 is intercepted and in-situ purified through the sewage interception diversion purification system, and the sewage diverted to the downstream of the river through the sewage interception diversion purification tank enters the sewage centralized purification area 3, and is treated by the sewage centralized purification system centralized purification;

The centralized sewage purification system includes the bottom microporous aeration system and the combined ecological floating island 14; the bottom microporous aeration system, the combined ecological floating island structure, and the layout are the same as the sewage interception, diversion and purification system; the two bottom microporous The hole aeration system shares the aerator 8 and the aeration supervisor 9.

Example 2

This example illustrates the specific implementation of the method of the present invention.

Method of the present invention comprises the steps:

(1) As shown in Figure 1, the river course 1 to be treated is divided into sewage in-situ purification area 2 and sewage centralized purification area 3; sewage in-situ purification area 2 and sewage centralized purification area 3 are connected, and sewage in-situ purification area 2 is located in The upstream section of the river to be treated 1, the concentrated sewage purification area 3 is located in the downstream section of the river to be treated 1; the centralized sewage purification area 3 is selected in a relatively remote and uninhabited downstream section of the river, and the area is determined according to the pollution load, usually 1km in length The river channel utilizes a 60-100m long area;

For rivers with ordinary width (<30m), sewage interception and containment devices 4 are respectively arranged on both sides of the river where sewage in-situ purification area 2 is located 1.0m~2.0m from the bank, sewage interception and containment devices 4, river banks, and the bottom of the river A tank structure is formed between them, that is, the sewage interception diversion purification tank 7; the sewage outlet 6 is searched along the coast, and the sewage interception branch pipe 5 is installed at the sewage outlet 6, so that the sewage discharged from the sewage outlet 6 flows into the sewage interception through the sewage interception branch pipe 5 Diversion purification tank 7; Floating plants are planted in the sewage interception diversion purification tank 7, sewage in the purification tank, floating plants select foxtail algae or copper money grass, and the excellent plant bodies with a plant length of 20 ~ 40cm are evenly put in. The coverage is over 80%;

Wherein, the sewage intercepting enclosure device 4 is composed of a floating body 42, a waterproof cloth 43 and a gabion 41, the floating body 42 floats on the water surface, the gabion 41 sinks into the bottom mud of the river, and the upper and lower ends of the waterproof cloth 43 are respectively wrapped by steel ropes 44 Connect the floating body and the gabion to form an enclosure; the floating body 42 is selected from a circular plastic foam with a length of 50-80cm and a diameter of Φ10-30cm, and the floating body 42 is connected by a wrapped waterproof cloth; the waterproof cloth 43 can be purchased from the market, as far as possible Choose durable materials with good waterproof effect and not easy to corrode. The height is determined by the highest water level of the river; install moso bamboo piles to fix the floating body every 10-30 meters on the sewage interception enclosure 4, and the height of the moso bamboo piles is higher than the highest water level of the river;

(2) The bottom microporous aeration system is arranged in the river channel where the sewage in-situ purification area 2 and the sewage centralized purification area 3 are located, including the aerator 8, the aeration main pipe 9, the aeration branch pipe 10 and the microporous aeration device 11; An aerator 8 is installed on the inner side of the river bank, and the aerator 8 is ventilated to the aeration main pipe 9 through the ventilation pipe 12; One end of the branch pipe 10 is connected; the other end of the aeration branch pipe 10 is connected to the microporous aeration device 11; the microporous aeration device 11 in the sewage in-situ purification area 2 is partly located in the auxiliary tank for purification in the sewage interception diversion purification tank 7, and partly passes through Pass through the floating body connection 45 and enter the main body of the river, the sewage in-situ purification area 2 and the sewage centralized purification area 3 share the aerator 8 and the aeration supervisor 9;

(3) A combined ecological floating island 14 is arranged on the water surface of the river where the sewage in-situ purification area 2 and the sewage centralized purification area 3 are located. The combined ecological floating island 14 includes floating plants 141 and elastic fillers 142; the floating plants 141 are planted in a circular frame 143 and net 144 constitute the plant floating bed; the elastic filler 142 is connected with the net 144, and is suspended below the plant floating bed; each ecological floating island 14 is fixed above the water surface of the river with moso bamboo stakes 145; The coverage of the island 14 is 30% to 50% of the water surface area, and the coverage of the combined ecological floating island 14 in the concentrated sewage purification area 3 is 50% to 60% of the water surface area; each combined ecological floating island 14 uses 3 Moso bamboo The pile 145 is fixed in a triangular direction, and the part above the water surface of the moso bamboo pile 145 is higher than the highest water level of the river; Polyethylene net 144 is covered to form a plant floating bed; the elastic filler 142 is connected to the polyethylene net 144 at intervals and suspended under the plant floating bed, and then the floating plant 142 is placed in the plant floating bed to fill it up; , papaya or water peanuts;

(4) Put biological zeolite on the surface of the sediment in centralized sewage purification zone 3 to adsorb ammonia nitrogen, and the amount of putting is determined according to the pollution status of the water body;

(5) After all the facilities in the above steps are laid out, run the bottom microporous aeration system to increase oxygen in the water body, manage and protect the combined ecological floating island 14, and spray microbial agents in the centralized sewage purification area 3 during the operation of sewage treatment To adjust the water quality, according to the water quality, you can choose to purchase biologically active liquid and EM enrichment liquid containing photosynthetic bacteria, ammonia oxidizing bacteria, nitrifying bacteria and other bacteria from the market, and adjust the water quality according to the dosage instructions of the product.

Wherein, described microporous aeration device 11 structure is shown in Figure 3, is made up of microporous aeration tube 111 and steel bar 112, and steel bar 112 is made into conical tower support, and microporous aeration tube 111 is wound on it, The microporous aeration device 11 is formed, specifically: the steel bar 112 is bent into a ring structure and spirals up like a spring, and the diameter of the ring structure decreases successively from bottom to top, and the surroundings are connected and fixed by steel bars 112 to form a bracket of a conical tower structure. The aeration tube 111 is wound on the support; the top layer of the support, that is, the end with the smallest annular diameter, is connected to the aeration branch pipe 10; the ring structure at the bottom of the support is welded and fixed with a cross-shaped iron sheet 113; The trachea 111 winds 3 layers from the top layer down, the diameter of the ring structure at the bottom layer is Φ500, and the diameter of the ring structure at the top layer is ^Φ150 ; The installation density of gas devices 11 is 1 unit/5m ² .

The method described in this example was put into use in the river channel of Zhujiaqiao Port in Jiaxing, Zhejiang Province to observe the sewage treatment situation. According to the monitoring data in November 2014, compared with the eve of treatment (July 2014), COD _Mn , TP, and NH ₄ -N in each river after treatment decreased by about 36%, 50-80%, and more than 80%, respectively. Oxygen DO increased by 125-310%. By October 2015, according to the monitoring data of the local environmental protection department, the water quality of the river was stable between Class IV-III, the phenomenon of black and odor has been completely eliminated, and the water quality has been fundamentally improved.

The method and system of the present invention realize the fast and complete interception of sewage at the sewage outlet, reduce the cumbersome projects such as laying sewage pipelines, and have a certain improvement in the removal efficiency of pollutants. Promote the application of black and odorous river treatment technology.

Claims (11)

1. a kind of river course enclosure cuts dirty water conservancy diversion purified in situ processing system, it is characterised in that including sewage in-situ purifying area and dirt Water concentrates purifying area；Sewage in-situ purifying area concentrates purifying area to be connected with sewage, and sewage in-situ purifying area is laid in river to be administered Set in road upper reach, sewage in-situ purifying area and cut dirty water conservancy diversion cleaning system, sewage concentrates purifying area to be laid in river to be administered Road lower reache, sewage is concentrated and set in purifying area sewage to concentrate cleaning system；

Described section of dirty water conservancy diversion cleaning system includes cutting dirty enclosure system, bottom micro-pore aeration system and combined ecological chinampa；It is described Cut dirty enclosure system and bottom micro-pore aeration system is laid along riverbank, combined ecological chinampa is laid in the water surface；

Described section of dirty enclosure system includes cutting dirty branch pipe(tube) and cuts dirty enclosure device；Described section of dirty enclosure device is laid along riverbank, By including the sewage draining exit fence of riverbank, trough body structure is formed between riverbank, bottom of river channel, that is, cut dirty water conservancy diversion purification tank；Described section Dirty branch pipe(tube) connects sewage draining exit, the sewage that sewage draining exit flows out is drained to and cuts dirty water conservancy diversion purification tank, cuts in dirty water conservancy diversion purification tank and plants Plant fluitante, sewage in purification tank；Described section of dirty enclosure device is made up of floating body, waterproof cloth and gabion, and floating body is bubbled through the water column, Gabion sinks to river bed bed mud, and waterproof cloth upper and lower side wraps up connection floating body and gabion, forms enclosure by steel cable respectively；

The bottom micro-pore aeration system includes aerator, aeration supervisor, aeration branch pipe and microporous aeration device；Aerator passes through Breather pipe is to ventilation in aeration supervisor；Aeration supervisor lay along riverbank, is connected with aeration branch pipe one end by three-way pipe；Aeration branch The pipe other end connects microporous aeration device；

The combined ecological chinampa includes fluitante and elastic filler；Fluitante is planted in the plant that circular frame and net are constituted In thing floating bed；Elastic filler is connected with net, is suspended on plant floating bed lower section；Each ecological floating island is fixed on urban river water with mao bamboon stake Face top；

The sewage of sewage in-situ purifying area carries out cutting dirty and purified in situ by cutting dirty water conservancy diversion cleaning system, is purified through cutting dirty water conservancy diversion The sewage that groove is guided to river course downstream enters sewage concentration purification region, and concentration purification is carried out by sewage concentration cleaning system；

The concentration sewage purification system includes bottom micro-pore aeration system and combined ecological chinampa；The bottom micro-pore aeration system System, combined ecological floating island structure, laying mode are identical with dirty water conservancy diversion cleaning system is cut；Two bottom micro-pore aeration systems are shared and exposed Mechanism of qi and aeration are responsible for.

2. system according to claim 1, it is characterised in that fill hair every 10 ~ 30 meter amperes on described section of dirty enclosure device The fixed floating body of bamboo stake, mao bamboon stake height is higher than river course peak level.

3. system according to claim 1, it is characterised in that the floating body is from 50 ~ 80cm long, 10 ~ 30cm of diameter of phi Round plastic foam, between floating body by wrap up waterproof cloth be connected.

4. system according to claim 1, it is characterised in that the fluitante selects watermifoil or copper coin grass, cuts dirt Fluitante coverage more than 80% in water conservancy diversion purification tank.

5. system according to claim 1, it is characterised in that the microporous aeration device is by micropore aeration pipe and reinforcing bar group Into, circular cone turriform support is made of reinforcing bar, micropore aeration pipe is wound on it, microporous aeration device is formed, specially：By reinforcing bar Bend to loop configuration to be spiraled rising in spring-like, diameter successively decreases loop configuration successively from bottom to up, and surrounding uses bar connecting It is fixed, the support of circular cone pyramidal structure is formed, micropore aeration pipe is wrapped on support；Support top layer, i.e. annular diameter minimum One end is connected with aeration branch pipe；Support bottom loop configuration is welded and fixed with criss-cross iron sheet.

6. system according to claim 5, it is characterised in that totally 4 layers of the support loop configuration, micropore aeration pipe is from top Layer down winds 3 layers, bottom loop configuration diameter of phi 500, top layer loop configuration diameter of phi 150；

The microporous aeration device air mass flow is, each microporous aeration device 5m³/ h, microporous aeration device packing density is 1 Individual/5m²。

7. system according to claim 1, it is characterised in that the coverage on the combined ecological chinampa of sewage in-situ purifying area It is the 30% ~ 50% of water surface area, it is the 50% ~ 60% of water surface area that sewage concentrates the coverage on the combined ecological chinampa of purifying area；

Each combined ecological chinampa is fixed with 3 mao bamboon stakes by triangle direction, and the part that mao bamboon stake top portion is higher by the water surface is higher than River course peak level.

8. system according to claim 1, it is characterised in that the building mode on the combined ecological chinampa is：Using PE Pipe or pvc pipe surround circular frame, are covered with layer of polyethylene net, constitute plant floating bed；By elastic filler interval and polyethylene Net is connected and is suspended on plant floating bed lower section, then fluitante is placed in plant floating bed fills up；The fluitante is from green Watermifoil, copper coin grass or water peanut.

9. a kind of river course enclosure cuts dirty water conservancy diversion purified in situ processing method, it is characterised in that comprise the following steps：

（1）River course to be administered is divided into sewage in-situ purifying area and sewage concentration purifying area；Sewage in-situ purifying area and sewage Purifying area is concentrated to be connected, sewage in-situ purifying area is located at river course upper reach to be administered, sewage concentrates purifying area to be located at and waits to administer River course lower reache；

Laid respectively at bank 1.0m ~ 2.0m in river course two sides residing for sewage in-situ purifying area and cut dirty enclosure device, cut dirt Enclosure device, trough body structure is formed between riverbank, bottom of river channel, that is, cut dirty water conservancy diversion purification tank；Bank searches sewage draining exit, in blowdown Installed at mouthful and cut dirt branch pipe(tube), the sewage that sewage draining exit is discharged is flowed into a section dirty water conservancy diversion purification tank by cutting dirty branch pipe(tube)；Dirt is cut to lead Plantation fluitante, sewage in purification tank in stream purification tank；

Wherein, described section of dirty enclosure device is made up of floating body, waterproof cloth and gabion, and floating body is bubbled through the water column, and gabion sinks to river bed bottom Mud, waterproof cloth upper and lower side wraps up connection floating body and gabion by steel cable respectively, forms enclosure；Cut on dirty enclosure device every 10 ~ The 30 meter amperes dress fixed floating body of mao bamboon stake, mao bamboon stake height is higher than river course peak level；

（2）River course where purifying area is concentrated to lay bottom micro-pore aeration system, including aeration in sewage in-situ purifying area and sewage Machine, aeration supervisor, aeration branch pipe and microporous aeration device；Aerator is installed on the inside of riverbank, aerator is by breather pipe to exposure Ventilation in gas supervisor；Aeration supervisor lay along riverbank, is connected with aeration branch pipe one end by three-way pipe；The aeration branch pipe other end connects Connect microporous aeration device；Sewage in-situ purifying area and sewage concentrate purifying area to share aerator and aeration supervisor；

（3）The river course water surface where purifying area is concentrated to lay combined ecological chinampa, the combination in sewage in-situ purifying area and sewage Ecological floating island includes fluitante and elastic filler；Fluitante be planted in circular frame and net constitute it is plant floating bed on；Bullet Property filler with net be connected, be suspended on plant floating bed lower section；The mao bamboon stake of each ecological floating island is fixed on river course water surface top；

（4）Concentrate purifying area bed mud surface to deliver biozeolite in sewage, adsorb ammonia nitrogen；

（5）After all facilities are laid and finished in above-mentioned steps, bottom micro-pore aeration system is run, to water oxygenation, manage and protect combination Ecological floating island, in sewage disposal process is run, purifying area sprinkling microbial bacterial agent, regulating water quality is concentrated in sewage.

10. method according to claim 9, it is characterised in that the microporous aeration device is by micropore aeration pipe and reinforcing bar Composition, circular cone turriform support is made of reinforcing bar, and micropore aeration pipe is wound on it, forms microporous aeration device, specially：By steel Muscle bends to loop configuration and is spiraled rising in spring-like, and diameter successively decreases loop configuration successively from bottom to up, and surrounding is connected using reinforcing bar Fixation is connect, the support of circular cone pyramidal structure is formed, micropore aeration pipe is wrapped on support；Support top layer, i.e. annular diameter are minimum One end be connected with aeration branch pipe；Support bottom loop configuration is welded and fixed with criss-cross iron sheet；

Totally 4 layers of the support loop configuration, micropore aeration pipe down winds 3 layers from top layer, bottom loop configuration diameter of phi 500, Top layer loop configuration diameter of phi 150；

The microporous aeration device air mass flow is, each microporous aeration device 5m³/ h, microporous aeration device packing density is 1 Individual/5m²。

11. methods according to claim 9, it is characterised in that the covering on the combined ecological chinampa of sewage in-situ purifying area It is the 30% ~ 50% of water surface area to spend, sewage concentrate purifying area combined ecological chinampa coverage for water surface area 50% ~ 60%；

Each combined ecological chinampa is fixed with 3 mao bamboon stakes by triangle direction, and the part that mao bamboon stake top portion is higher by the water surface is higher than River course peak level；

The building mode on the combined ecological chinampa is：Circular frame is surrounded using PE pipes or pvc pipe, is covered with layer of polyethylene net Lid, is constituted plant floating bed；Elastic filler interval is connected with polythene net and is suspended on plant floating bed lower section, then fluitante is put Put and interior filled up plant floating bed；The fluitante selects green watermifoil, copper coin grass or water peanut.