CN112062424A - A kind of sewage resource utilization equipment and method - Google Patents

Abstract

The invention discloses a sewage resource utilization equipment, comprising a first treatment chamber, a second treatment chamber, a biological filter and a planting tank; the first treatment chamber is communicated with the second treatment chamber; the biological filter is communicated with the second treatment chamber; The tank communicates with the biological filter for nutrient recovery in the liquid. By applying the technical scheme of the present invention, the effect is: the first treatment chamber and the biological filter degrade the organic pollutants to release nitrogen and phosphorus, convert the sewage into nitrogen and phosphorus nutrient solution and carry out liquid deodorization, and the planting tank can remove the nutrients in the sewage. Carry out effective interception and enrichment and recycling as fertilizer to realize ecological treatment of sewage. The invention also discloses a method for utilizing sewage resources, including anaerobic treatment, filtration, starting or closing backwash components according to liquid level conditions, deep degradation and deodorization, separation of sewage impurities and recovery of nutrients; The treatment is simple and efficient, and the sewage is purified and treated in combination with the ecological method, which can realize the recycling of resources.

Description

A kind of sewage resource utilization equipment and method

technical field

The invention relates to the field of sewage treatment, in particular to a sewage resource utilization device and method.

Background technique

The current domestic sewage treatment method is mainly collected through the sewage pipe network and then built into a sewage treatment station, and the activated sludge method or biofilm method is used for biodegradation treatment. This treatment method has disadvantages: 1. It needs to lay a large number of collection pipe networks; 2. Treatment The biochemical process is difficult to control, and the treatment consumes a lot of energy; 3. Additional deodorization facilities need to be built or to avoid dwellings for odor escape during the treatment process; 4. Additional treatment facilities are required to treat sludge and other impurities generated; 5. Treatment The construction, operation and maintenance of facilities occupies and consumes a lot of money and cannot achieve direct economic benefits, resulting in a lack of initiative of the people and the government.

To sum up, there is an urgent need for a sewage resource utilization device and method that is easy to implement, has low cost, can generate economic benefits, and has good sewage treatment effect to solve the above problems.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a sewage resource utilization device and method that is easy to implement, has low cost, can produce economic benefits and has good sewage treatment effect, and the specific technical scheme is as follows:

A sewage resource utilization device, comprising a first treatment chamber, a second treatment chamber, a biological filter and a planting tank; the first treatment chamber is provided with a water inlet and the first treatment chamber is provided with biological fillers for liquid treatment; The second treatment chamber is communicated with the first treatment chamber for filtering the liquid discharged from the first treatment chamber; the biological filter is communicated with the second treatment chamber for the degradation and deodorization of the liquid; the planting tank is connected to the The biological filter is connected for nutrient recovery in the liquid.

Preferably in the above technical solutions, the biological filter includes a tank body and a degradation layer and a deodorizing layer arranged in the tank body; the degradation layer is communicated with the second treatment chamber; the deodorizing layer includes a water absorbing part and a deodorizing part The water absorbing member is in contact with the degradation layer and can absorb the liquid to the deodorizing layer; the deodorizing member is in contact with the water absorbing member, and the deodorizing member and the water absorbing member are combined to realize liquid deodorization.

Preferably, the second treatment chamber includes a filter tank and a water collection tank; the filter tank is communicated with the first treatment chamber; the water collection tank is communicated with the filter tank for collecting the liquid filtered by the filter tank.

Preferably, the second treatment chamber further includes a backwash component; one end of the backwash component is connected to the filter tank, and the other end is connected to the outside, so that the liquid in the sump can be discharged to the outside through the filter tank.

Preferably, one end of the backwashing component that communicates with the filter tank is also communicated with the first treatment chamber, so that the liquid in the first treatment chamber can be discharged to the outside world.

Preferably, the above technical solution further includes a water distributor arranged in the biological filter; the water distributor includes a main pipeline and at least one single piece of the water distributor; the main pipeline is communicated with the single piece of the water distributor, and is used for The degraded and deodorized liquid is collected and transferred; the water distributor unit communicates with the second treatment chamber.

Preferably, the single piece of the water distributor includes a water inlet pipe and a water production pipe; the water inlet pipe is communicated with the second treatment chamber, and the water inlet pipe is provided with at least one water distribution head; the water production pipe is sleeved The water inlet pipe and the water production pipe are respectively provided with a communication port for communicating with the main pipe and at least one water collecting head for collecting water.

Preferably, the above technical solution further includes a separation tank for separation of liquid impurities; the separation tank includes a tank body A and a separation component arranged in the tank body A; the tank body A is provided with a drainage channel that communicates with the planting tank The first liquid after separation of impurities is discharged through the water outlet; the separation assembly includes a mud discharge pipe, a siphon cover and a guide cylinder; the mud discharge pipe runs through the tank body A and is used to discharge the second liquid with impurities ; The first end of the siphon cover is closed, the second end is sleeved on the mud discharge pipe, and the siphon cover is provided with an opening A that communicates with a single piece of the water distributor and an opening B that communicates with the guide tube; the The guide tube is sleeved on the siphon cover, and it is set on the tank body A to collect liquid and impurities.

The invention also discloses a sewage resource utilization method, which adopts the above-mentioned sewage resource utilization equipment, and the specific steps are as follows:

Step 1: Sewage enters from the water inlet, and after anaerobic treatment in the first treatment chamber, is discharged into the second treatment chamber for filtration;

Step 2: according to the liquid level of the first treatment chamber and the second treatment chamber, start or close the backwashing component;

Step 3: The filtered liquid in the second treatment chamber is discharged into the biological filter for degradation and deodorization;

Step 4: The degraded liquid of the biological filter is discharged into the separation tank for impurity separation;

Step 5: The first liquid after the separation of impurities flows into the planting tank to recover nutrients and then discharge.

Preferably, in the above technical solution, in the second step, starting or closing the backwash component is as follows:

A: When the liquid level of the first treatment chamber rises to above the liquid level two, start the backwash component;

B: When the liquid level of the water collecting tank of the second treatment chamber drops below the liquid level three, close the backwashing component;

C: Repeat A and B to realize the cyclic action of opening and closing the backwash component.

Applying the technical scheme of the present invention has the following beneficial effects:

(1) The sewage resource utilization equipment of the present invention includes a first treatment room, a second treatment room, a biological filter and a planting tank; the first treatment room is provided with biological fillers, which can degrade sewage (the principle is: enrichment of a large number of microorganisms to The organic pollutants are decomposed by anaerobic fermentation), and the degraded sewage is filtered in the second treatment room; the filtered sewage is deeply degraded and deodorized by the biological filter, and finally flows into the planting tank to recover the nutrients in the sewage; The first treatment chamber and the biological filter of the present invention can remove organic pollutants, convert the sewage into a nutrient solution containing nitrogen and phosphorus by degrading the organic pollutants and release nitrogen and phosphorus, and deodorize the liquid. Plant layer) to effectively digest and recover the nutrients in the sewage (that is, the retained nutrients are enriched and recycled as fertilizers), and the ecological treatment of the sewage is realized.

(2) The biological filter of the present invention includes a tank body and a degradation layer and a deodorizing layer sequentially arranged in the tank body; through the cooperation of the deodorizing layer and the degrading layer, not only the sewage can be deeply degraded, but also the sewage can be degraded in depth. Purify odors and prevent odors from escaping, reducing the need for subsequent planting tanks to degrade sewage. Specifically, after the deep degradation of organic pollutants, a large number of microbial communities that grow and degrade organic pollutants in the planting tank are prevented from multiplying, causing blockage and maintenance. The cost rises, and the planting tank can adopt the form of soilless cultivation according to the actual situation to recover the nutrients in the sewage, which can produce direct economic benefits and beautify the environment, help to promote the enthusiasm of the government and the public, and facilitate the maintenance of equipment. promotion and implementation.

(3) The deodorizing layer of the present invention includes a water-absorbing member (preferably including a water-absorbing cotton rope and a water-absorbing cotton ball) and a deodorizing member (preferably granular activated carbon); The microorganisms on the deodorizing parts carry out biological oxidation of the odorous substances (such as ammonia sulfide) in the sewage to complete the deodorization of the sewage, and at the same time generate nutrients (such as water and nitrogen) required for the reproduction of microorganisms, so that the deodorization can carry out a virtuous cycle, greatly reducing the odor. The deodorizing cost is reduced, and the deodorizing layer adopts a water absorbing member to adsorb the sewage to maintain the humid environment of the deodorizing layer, which simplifies the structure and saves costs and losses compared with the prior art using spraying to maintain the humid environment.

(4) The second treatment chamber of the present invention comprises a filter tank and a water collection tank; the filter tank is communicated with the first treatment chamber; the water collection tank is communicated with the filter tank (preferably, the filter tank is provided with quartz sand for filtering); The filter tank can effectively filter the suspended particles in the sewage and prevent the suspended particles from entering the biological filter tank and block the pores of the biological filler in the biological filter tank. Preferably, the second treatment chamber is arranged at the upper end of the first treatment chamber, and cooperates with the first treatment chamber to form a water collecting weir for collecting water, which is convenient to improve the space utilization rate and reduce the configuration requirements of the pipeline. .

(5) The backwash assembly of the present invention can not only make the filtrate of the sump backflow to wash the filter tank, but also bring out the suspended particles in the filter tank and discharge it into the sewage tank, and at the same time, the filtrate contains degraded substances (after the first The sewage treated in the treatment room contains degradable substances, such as anaerobic bacteria), which can continue to decompose the fecal residue deposited in the sewage tank and reduce the treatment demand of the sewage tank; The treatment chamber is connected to facilitate the discharge of the sewage in the first treatment chamber to the sewage pool, preventing the high liquid level of the first treatment chamber from affecting the normal operation of the equipment. It is convenient to control the amount of sewage in the first treatment chamber discharged from the backwashing component.

(6) The present invention also includes a water distributor arranged in the biological filter, and the filtrate in the sump can be circulated to the water distributor through pipes and distributed to the biological filter for degradation and deodorization; the water distributor includes The main pipeline and at least one set of water distributors (the quantity is selected according to the actual demand); the filtrate is evenly distributed into the degradation layer through the water distribution head of the water distributor, and is recovered into the water production pipe through the water collecting head, so that the sewage can circulate in the biological system. The degradation and deodorization carried out in the filter tank is recycled to the water production pipe of the single piece of water distributor, and the main pipeline is connected to the single piece of water distributor to transport the degraded and deodorized liquid to the separation tank.

(7) The present invention also includes a separation tank for liquid impurity separation; the separation tank includes a tank body A and a separation component arranged in the tank body A; the separation component can separate impurities from the deeply degraded and deodorized sewage At the same time, the separated second liquid with impurities (the impurities contain microorganisms that can decompose) is discharged into the sewage tank to reduce the treatment demand of the subsequent sewage tank; tank body A can collect the first liquid after the separation of impurities (that is, clear liquid, free of impurities), which is introduced into the planting tank for nutrient recovery.

(8) The biological filter tank, the separation tank and the planting tank of the present invention are all arranged on the side wall of the first treatment chamber, which can form an integral integrated structure, which is convenient for the implementation and transportation of the equipment.

The invention also discloses a sewage resource utilization method, which adopts the sewage resource utilization equipment. Specifically, the sewage is sequentially subjected to anaerobic treatment through a first treatment chamber, filtering by a filter, and deep degradation and deodorization by a biological filter. , the separation tank is used to separate impurities and the planting tank is used for the recycling of liquid nutrients. This method is simple and efficient for sewage treatment. Combined with the ecological method to purify the sewage, it can realize the recycling of resources, and the anaerobic treatment of the first treatment chamber The degradation treatment and the deep degradation and deodorization of the biological filter reduce the need for biodegradation of the planting tank and avoid the microorganisms blocking the filler in the planting tank, resulting in increased maintenance costs and poor recovery of nutrients in the planting tank; after anaerobic treatment Set up a backwashing component, which can backwash the filter tank according to the liquid level of the first processing chamber and the second processing chamber, ensure the filtering effect of the filter tank, and prevent the suspended particles in the filter tank from entering the biological filter and causing packing blocked.

In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. The present invention will be described in further detail below with reference to the drawings.

Description of drawings

The accompanying drawings constituting a part of the present application are used to provide further understanding of the present invention, and the exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

Fig. 1 is the structural schematic diagram of the sewage resource utilization equipment in the present embodiment; (the arrow indicates the liquid flow direction)

Fig. 2 is the enlarged view of A in Fig. 1;

Fig. 3 is the top view of the water distributor in Fig. 1;

Fig. 4 is the structural representation of the single piece of water distributor in Fig. 3;

Fig. 5 is the structural representation of separation tank in Fig. 1;

Among them, 1. the first treatment chamber; 1.1, the collection weir; 1.2, the water inlet; 1.3, the first bearing plate; 1.4, the overflow port; 2, the second treatment chamber; 2.1, the filter tank; 2.1.1, the coarse Sand filter material; 2.1.2, medium sand filter material; 2.1.3, fine sand filter material; 2.2, water collection tank; 2.2.1, pipeline A; 2.3, siphon; 3, biological filter; 3.1, degradation layer; 3.2 , deodorant layer; 4, planting tank; 4.1, green plant layer; 4.2, water flow layer; 4.3, planting layer; 5, water distributor; 5.1, main pipeline; 5.2, single piece of water distributor; Water pipe; 5.2.1.1, water distribution head; 5.2.2, water production pipe; 5.2.2.1, water collecting head; 6, separation tank; 6.1, tank body A; 6.2, separation component; 6.2.1, sludge discharge pipe; 6.2.2 6.2.3, the first cylinder; 6.2.4, the conical shell; 6.2.5, the second cylinder; 6.3, the opening A; 6.4, the opening B; 7, the sewage pool.

Detailed ways

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention may be implemented in many different ways as defined and covered by the claims.

Example:

A sewage resource utilization equipment includes a first treatment chamber 1, a second treatment chamber 2, a biological filter 3, a separation tank 6 and a planting tank 4, as shown in Figures 1-5. details as follows:

As shown in Figure 1, the inner wall of the lower end of the first treatment chamber is provided with a first bearing plate 1.3, the first bearing plate is horizontally fixed in the first treatment chamber and is provided with spherical biological fillers ( The spherical biological filler is an existing material in the market). Here, preferably, the first carrier plate is provided with multiple groups of filter holes for sewage to pass through, and the pore size of the filter holes is smaller than the diameter of the spherical biological filler, and the lower end of the first treatment chamber is provided with a water inlet 1.2 (the water inlet is located at the lower end of the first bearing plate), the sewage in the sewage pool 7 is transported to the water inlet through the cooperation of the water pump (not shown) and the pipeline.

The second treatment chamber 2 is arranged at the upper end of the first treatment chamber 1, and cooperates with the first treatment chamber to form a collecting weir 1.1 for sewage collection. As shown in Figure 1, the top of the collecting weir is provided with an overflow. The flow port 1.4 and the overflow port are connected to the sewage pool 7 through the pipeline, which is convenient for the discharge of gas and silted water caused by equipment failure. Here, preferably, the volume of the first processing chamber is 2-5 times the volume of the second processing chamber, and the vertical height of the first processing chamber is 2-6 times the vertical height of the second processing chamber.

The second treatment chamber includes a filter tank 2.1 (preferably provided with two sets of filter tanks in parallel) and a water collection tank 2.2. As shown in Figure 2, the upper end of the filter tank is connected to the water collection weir through a pipeline A (mark 2.2.1), And the side wall of the water collecting weir is provided with a first hydraulic water level control valve (not shown, and the first hydraulic water level control valve refers to the existing structure) corresponding to the two groups of filters. Pipeline A is connected, and the first hydraulic water level control valve can be closed or connected to the filter tank according to the liquid level of the collecting weir (as shown in Figure 2, when the liquid level of the collecting weir is higher than the liquid level one or more, the first hydraulic water level The control valve is opened, otherwise when the liquid level is lower than the liquid level one, the first hydraulic water level control valve is closed).

Preferably, the lower end of the filter tank is provided with a second carrier plate capable of carrying the filter material, and the second carrier plate is sequentially provided with (from bottom to top) the coarse sand filter material 2.1.1 (with a particle size of 10-15mm) ), medium sand filter material 2.1.2 (particle size is 5-8mm) and fine sand filter material 2.1.3 (particle size is 1-3mm), as shown in Figure 2, where the second carrier plate is provided with The filter hole through which the liquid passes, and the filter hole diameter is smaller than the particle size of the fine sand filter material.

The backwashing assembly can discharge the sewage in the collecting weir to the outside world and discharge the filtrate of the collecting tank to the outside through the pipeline A (symbol 2.2.1) along the opposite direction of filter filtration. The structure of the backwashing assembly is specifically:

As shown in FIG. 2 , the backwash assembly includes a siphon 2.3 (preferably a U-shaped siphon) and a broken siphon (not shown); the first end of the siphon is connected to the pipeline A, and the second end is connected to the sewage pool 7 Connected (here the pipe A and the sewage pool have a vertical height difference, and the siphon can have a siphon effect); the first end of the broken siphon is inserted into the water collection tank, and the second end is connected to the siphon (here the first end of the broken siphon is connected to the siphon). One end is inserted into the liquid level of the sump at three places, and the end of the first end is provided with a second hydraulic water level control valve, which can control the opening or closing of the first end of the broken siphon);

The working process of the backwashing component is as follows: 1. The liquid level in the collecting weir rises to the liquid level 2 (the principle is: when the filter material in the filter tank is blocked by suspended particles, the liquid flow rate of the filter tank is reduced, resulting in water collection. The liquid level of the weir rises); 2. The liquid in the collecting weir enters the siphon pipe through the pipe A (mark 2.2.1), and the air in the siphon pipe is discharged, triggering the siphon effect (the principle here is: due to the existence of suspended particles in the filter tank, the collecting The liquid from the weir to the filter cannot flow through the filter, and the liquid accumulates. The water inlet 1.2 at the lower end of the first treatment chamber continues to enter water, and the liquid of the collecting weir enters the siphon along the pipeline A); 3. The liquid of the collecting weir When the level drops below the liquid level 1, the first hydraulic water level control valve arranged on the side wall of the collecting weir closes the communication with the filter tank; the siphon continues to absorb the liquid and impurities in the filter tank and the collecting tank, and discharges it into the sewage tank; 4. The liquid level of the sump drops to the liquid level three, the second hydraulic water level control valve set at the liquid level three opens the first end of the broken siphon, and the air enters the siphon from the broken siphon, breaking the siphon effect, and the siphon stops sucking; 5. When the liquid level of the sump rises, that is, after the liquid level is higher than the liquid level 3, the second hydraulic water level control valve closes the siphon, and repeats the above 1-4 operations to realize the cyclic action of starting and closing the backwash component.

The biological filter tank 3 includes a tank body and a degradation layer 3.1 and a deodorization layer 3.2 arranged in sequence in the tank body, as shown in Figure 1; the degradation layer is communicated with the second treatment chamber, and the degradation layer is provided with a Spherical biological fillers degraded in sewage, the deodorizing layer includes a water-absorbing part and a deodorizing part (here, the water-absorbing part preferably includes a water-absorbing cotton ball and a water-absorbing cotton rope arranged on it, and the deodorizing part is granular activated carbon); water-absorbing cotton The rope extends into the degradation layer, which is used to adsorb the liquid in the degradation layer to the water-absorbing cotton ball, and cooperate with granular activated carbon for sewage deodorization treatment (here the height of the pool body is 2-3 times the thickness of the deodorization layer, which is convenient for water absorption The adsorption of the cotton rope to the liquid and the convenience of the outside oxygen to enter the degradation layer, cooperate with the degradation layer to deeply degrade the sewage, the height of the pool body is preferably 30cm; the thickness of the deodorant layer is 10cm).

The specific principles of degradation and deodorization are: the secondary products (such as ammonium sulfide) produced in the anaerobic biodegradation process in the first treatment chamber have certain characteristics of volatility and easy biooxidation, and the deodorization layer can avoid anaerobic effluent. (that is, the sewage from the water collection tank to the biological filter) is in direct contact with the air to prevent the odor from escaping to the outside world, and the oxygen in the air passes through the deodorization layer and contacts the sewage in the degradation layer; the odor in the sewage and the degradation layer In contact, the microorganisms attached to the surface of the biological filler oxidize and decompose the odors into nitrogen, water, sulfate and sulfite, which can provide the substances and energy required for the growth and reproduction of microorganisms. In direct contact with the air, after the volatile odors are adsorbed and enriched by the deodorizer, they are decomposed by the microorganisms growing on the surface to complete the deodorization. Here, the water absorbing member sucks the sewage into the deodorizing layer by siphoning to maintain the humid environment of the deodorizing layer, so as to provide the growth environment required by microorganisms, and in order to ensure the removal of odors, the air and sewage in the degradation layer can be increased according to the actual situation. Contact area.

It also includes a water distributor arranged in the biological filter; the water distributor includes a main pipeline 5.1 and at least one water distributor single piece 5.2, as shown in Figures 4-5; the main pipeline and the water distributor single piece connected to collect and transfer the degraded and deodorized liquid; the single piece of the water distributor is communicated with the second treatment chamber, specifically: the main pipeline is provided with a plurality of sets of branch pipelines, and the branch pipelines pass through the branch pipelines one by one. Corresponding to the single piece of the water distributor, the degraded and deodorized liquid is collected into the main pipeline and discharged to the outside (specifically, to the separation tank); the single piece 5.2 of the water distributor includes a sleeved water inlet pipe 5.2 .1 and water production pipe 5.2.2; the water inlet pipe is a pipe body with one end closed, and a plurality of groups of water distribution heads 5.2.1.1 for water distribution are arranged on the closed end near the closed end, and the water distribution head runs through the side of the water production pipe. The wall extends into the degradation layer to facilitate the distribution of sewage into the degradation layer, and the end of the water inlet pipe away from the closed end is communicated with the second treatment chamber (specifically, the water collection tank of the second treatment chamber) through a pipe; the water production pipe It is a pipe body with one end closed, and its side wall is provided with a communication port for communicating with the branch pipe, and its end away from the closed end is provided with multiple groups of water collecting heads 5.2.2.1 for water collection (a group of cloth There are 8 groups of water collecting heads and water distribution heads on a single piece of water device).

It also includes a separation tank 6 (preferably two sets of separation tanks in parallel) for the separation of liquid impurities, as shown in Figure 5; the separation tank includes a tank body A (preferably a groove with a flat groove surface) and a The separation component 6.2 in the body A (symbol 6.1); the tank body A is provided with a drainage outlet that communicates with the planting tank, and the tank body A collects the first liquid (ie clear liquid, free of impurities) after separating impurities, and It is discharged to the planting tank through the drain port; the separation assembly includes a siphon cover 6.2.2, a mud discharge pipe 6.2.1 and a guide cylinder; the first section of the mud discharge pipe runs through the bottom surface of the tank body A and the backwash assembly The siphon pipe is connected to facilitate the discharge of the second liquid (liquid containing impurities) from the siphon pipe into the sewage tank, and the second section of the sludge discharge pipe is located in the tank body A (here, the first section and the second section of the sludge discharge pipe are preferred. The length ratio is 1:5-10); the siphon cover is a pipe body with one end closed, which is sleeved on the mud discharge pipe, and the first end of the siphon cover (the end away from the closed end) is fixedly arranged on the bottom surface of the tank, and The end of the first end is provided with an opening B (marked as 6.4) for the circulation of the first liquid and the second liquid, and the side wall of the siphon cover is provided with an opening A (marked as 6.3) for communicating with the main pipe of the water distributor; The guide tube has two groups of structures, the first one is: the mud guide tube is a conical shell, the conical shell is sleeved on the siphon cover, and its small port is set on the bottom surface of the groove; the second one is : The guide cylinder includes a first cylinder 6.2.3, a second cylinder 6.2.5 and a conical shell 6.2.4; the first cylinder, the second cylinder and the conical shell are all sleeved on the siphon The first end of the first cylinder is arranged on the bottom surface of the groove, and the second end is connected with the small port of the conical shell; the second cylinder is connected with the large port of the conical shell. Here, preferably, the second cylinder includes a second cylinder A and a second cylinder B; the second cylinder A is connected to the large port of the conical shell, and the second cylinder B is fixedly sleeved on the first cylinder through the cooperation of the screw holes of the bolts. The second cylinder A and the second cylinder B are vertically provided with multiple sets of corresponding screw holes, so that the second cylinder B can adjust the vertical position relative to the second cylinder A (preferably the second cylinder B is There is a V-shaped groove on the cylinder B, which is convenient for the first liquid to overflow from the V-shaped groove to the tank body A). The small port of the conical shell is the same as that of the first cylinder, and the large port of the conical shell is the same as that of the second cylinder A, which is convenient for connection.

Preferably, the mud discharge pipe, the siphon cover and the guide tube are arranged on the same central axis, and the outer diameter of the mud discharge pipe is 0.5-0.1 times the outer diameter of the siphon cover, and the length specification of the mud discharge pipe is 0.5-0.1 times the length specification of the siphon cover 0-5-0.8 times; the outer diameter specification of the siphon cover is 0.5-0.1 times the outer diameter (small port diameter) of the conical shell.

The working principle of the separation tank is, see Figure 5: when the liquid level in tank body A is higher than the end of the sludge discharge pipe, the liquid enters the sludge discharge pipe, and the air in the sludge discharge pipe is discharged, triggering the siphon effect, and the second liquid It flows from the opening B (marked as 6.4) at the lower end of the siphon cover to the sludge discharge pipe, and is discharged to the outside through the sludge discharge pipe (here, the water intake of the opening A on the siphon cover is 1.2-3 times of the discharge volume of the drain outlet of the tank body A) .

The planting tank 4 (the number of planting tanks is selected according to actual needs) includes a tank body B and a green plant layer 4.1 (including green plants) arranged on the tank body B, and the green plant layer is arranged on the tank body B through the permeable mesh plate, The tank body B is communicated with the drainage port of the separation tank, and the first liquid discharged from the drainage port provides the nutrients required for the growth of green plants; the planting tank can also use the green plant layer 4.1, the planting layer 4.3 and the water flow layer 4.2. To cooperate, specifically, the green planting layer, planting layer and water flow layer are arranged in the tank body B in turn (from top to bottom, as shown in Figure 1), and the planting layer (including ceramsite) is used for the green planting layer. The green plants are fixed, and the water flow layer (including activated alumina, limestone and gravel) is communicated with the drainage outlet to retain nutrients in the first liquid, provide conditions for the growth of green plants, and purify sewage at the same time. The purified sewage here is discharged after ultraviolet disinfection.

Preferably, the planting tank is communicated with the drain outlet of the separation tank through a water distribution layer frame, and the water distribution layer frame includes at least two sets of communication pipes (preferably two groups here, which are the first communication pipe and the second communication pipe respectively). pipeline) and a frame structure composed of multiple groups of water distribution pipelines; the first end of the first communication pipeline is communicated with the drain of the separation tank, and the second end is connected with a water distribution pipeline (preferably, the water distribution pipeline is provided with a water distribution hole, The water distribution hole is communicated with the tank body B for water distribution), and the second communication pipe is communicated with the tank body B for collecting the liquid after the recovery of nutrients and discharging it to the outside world. The number of water distribution pipes here is selected according to the actual situation.

The invention also discloses a sewage resource utilization method, which adopts the sewage resource utilization equipment, and the specific steps are as follows:

Step 1: Sewage enters from the water inlet, and after anaerobic treatment in the first treatment chamber, is discharged into the filter tank of the second treatment chamber for filtration;

Step 2: according to the liquid level of the first treatment chamber and the second treatment chamber, start or close the backwashing component;

Step 3: The liquid filtered by the filter is discharged into the biological filter for deep degradation and deodorization;

Step 4; the degraded and deodorized liquid of the biological filter is discharged into the separation tank for impurity separation;

Step 5: The first liquid after the separation of impurities flows into the planting tank to recover nutrients and then discharge.

In the second step, referring to FIG. 2 , the details of starting or closing the backwash assembly are as follows:

A: The liquid level of the first treatment chamber rises to above the liquid level 2, and the backwash component is activated. Specifically: the liquid level rises to above the liquid level 2, and the siphon effect of the siphon is triggered, and the siphon absorbs the water collection weir and the second treatment chamber. Liquid and impurities are discharged to the outside.

B: The liquid level of the sump drops below the liquid level 3, and the backwash component is closed. Specifically: the liquid level of the sump drops below the liquid level 3, and the second hydraulic water level control valve set at the liquid level 3 is opened to break the rainbow. At the first end of the tube, the air enters the siphon from the broken siphon to break the siphon effect, and the siphon stops sucking.

C: Repeat A and B to realize the cyclic action of starting and closing the backwash component.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A sewage resource utilization device is characterized by comprising a first treatment chamber (1), a second treatment chamber (2), a biological filter (3) and a planting tank (4); the first treatment chamber is provided with a water inlet (1.2) and biological filler for liquid treatment is arranged in the first treatment chamber; the second processing chamber is communicated with the first processing chamber and is used for filtering liquid discharged from the first processing chamber; the biological filter is communicated with the second treatment chamber and is used for degrading and deodorizing liquid; the planting groove is communicated with the biological filter and is used for recovering nutrient substances in liquid.

2. The sewage resource utilization apparatus according to claim 1, wherein the biological filter (3) comprises a tank body, and a degradation layer (3.1) and a deodorization layer (3.2) arranged in the tank body; the degradation layer is communicated with the second treatment chamber; the deodorization layer comprises a water absorption piece and a deodorization piece; the water absorbing piece is in contact with the degradation layer and can absorb liquid to the deodorization layer; the deodorizing piece is in contact with the water absorbing piece, and the deodorizing piece and the water absorbing piece are combined to realize liquid deodorization.

3. The sewage resource utilization apparatus of claim 1, wherein the second treatment chamber (2) comprises a filter tank (2.1) and a water collecting tank (2.2); the filter chamber is communicated with the first treatment chamber; the water collecting tank is communicated with the filter tank and is used for collecting liquid filtered by the filter tank.

4. The sewage resource utilization apparatus of claim 3, wherein the second treatment chamber (2) further comprises a backwash assembly; one end of the backwashing component is communicated with the filter tank, the other end of the backwashing component is communicated with the outside, and liquid in the water collecting tank can be discharged to the outside through the filter tank.

5. The sewage resource utilization device of claim 4, wherein one end of the backwashing component, which is communicated with the filter chamber, is also communicated with the first treatment chamber, so that the liquid in the first treatment chamber can be discharged to the outside.

6. The sewage resource utilization apparatus of claim 1, further comprising a water distributor (5) disposed in the biological filter; the water distributor comprises a main pipe (5.1) and at least one water distributor unit (5.2); the main pipeline is communicated with the water distributor in a single piece and is used for collecting and transferring degraded and deodorized liquid; the water distributor single piece is communicated with the second treatment chamber.

7. The sewage resource utilization device of claim 6, wherein the water distributor unit (5.2) comprises a water inlet pipe (5.2.1) and a water production pipe (5.2.2); the water inlet pipe (5.2.1) is communicated with the second treatment chamber, and at least one water distribution head (5.2.1.1) is arranged on the water inlet pipe; produce the water pipe cover and establish on the inlet tube, and produce and be equipped with respectively on water pipe (5.2.2) and be used for the intercommunication mouth and at least one water collecting head (5.2.2.1) that are used for catchmenting with trunk line (5.1) intercommunication.

8. The sewage resource utilization apparatus of claim 6, further comprising a separation tank (6) for separation of liquid impurities; the separation tank comprises a tank body A (6.1) and a separation assembly (6.2) arranged in the tank body A; a water outlet communicated with the planting groove (4) is formed in the groove body A, and the first liquid after impurity separation is discharged through the water outlet; the separation assembly comprises a sludge discharge pipe (6.2.1), a siphon cover (6.2.2) and a guide cylinder; the sludge discharge pipe penetrates through the tank body A and is used for discharging second liquid with impurities; the first end of the siphon cover is closed, the second end of the siphon cover is sleeved on the sludge discharge pipe, and the siphon cover is provided with an opening A (6.3) communicated with the single piece of the water distributor and an opening B (6.4) communicated with the guide cylinder; the draft tube is sleeved on the siphon cover and arranged on the groove body A for collecting liquid and impurities.

9. A sewage resource utilization method, which is characterized by adopting the sewage resource utilization equipment of claim 8, and comprises the following specific steps:

the method comprises the following steps: sewage enters from the water inlet, is subjected to anaerobic treatment in the first treatment chamber and then is discharged into the second treatment chamber for filtering;

step two: according to the liquid level conditions of the first treatment chamber and the second treatment chamber, the backwashing component is started or closed;

step three: the liquid filtered by the second treatment chamber is discharged into the biological filter for degradation and deodorization;

step four; discharging the liquid degraded in the biological filter into a separation tank for impurity separation;

step five: and the first liquid after impurity separation flows into the planting groove to recover nutrient substances and then is discharged.

10. The sewage resource utilization method of claim 9, wherein in the second step, the backwashing assembly is started or stopped as follows:

a: when the liquid level of the first treatment chamber rises to more than two liquid levels, starting the backwashing component;

b: when the liquid level of the water collecting tank of the second treatment chamber is reduced to be lower than the liquid level III, the backwashing component is closed;

c: and repeating the step A and the step B to realize the cyclic action of opening and closing the backwashing component.

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