CN110776137A - A high-efficiency and energy-saving sewage treatment device using biochar - Google Patents

Abstract

The invention discloses a high-efficiency and energy-saving device for treating sewage by utilizing biochar, which mainly includes: a first sedimentation tower, a second sedimentation tower, a disinfection tank and a backwash tank, and the first sedimentation tower includes: a mud scraping mechanism, a filter screen and an impurity cleaning mechanism, the second precipitation tower includes: an adsorption tube, a second rotary rod for stirring and propelling waste materials, and a waste box installed at the bottom of the second precipitation tower, and a second rotary rod is installed on the second rotary rod. A plurality of progressive fan blades, the second precipitation tower and the waste tank are connected through a baffle plate provided at the bottom of the second precipitation tower, and the adsorption tubes are horizontal tubes connected by multiple rows of U-shaped tubes. The sterilizing box includes: a plurality of sterilizing rods staggered up and down at the top and bottom of the sterilizing rod and a water outlet pipe opened on the side. The backwashing box includes a water pump and an air pump. Low, suitable for widespread promotion.

Description

A high-efficiency and energy-saving sewage treatment device using biochar

technical field

The invention relates to the technical field of sewage biological treatment, in particular to a high-efficiency and energy-saving device for treating sewage by utilizing biological charcoal.

Background technique

Sewage treatment is the process of purifying sewage to meet the water quality requirements for discharge into a water body or for reuse. Sewage treatment is widely used in construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, catering and other fields, and is increasingly entering the daily life of ordinary people.

There are many ways to treat sewage. At present, the most widely used is the biological adsorption method, which has high adsorption and decontamination efficiency and is widely used. However, most of the current biological adsorption methods rely on the adsorption of biochar for adsorption, but most of the biochar is not recycled. Moreover, it is directly put into the sedimentation tank for precipitation, and its adsorption efficiency is too low, and it cannot ensure that the suspended solids in the water can be quickly adsorbed and precipitated, resulting in increased costs and low adsorption efficiency.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the present invention provides a high-efficiency and energy-saving device for treating sewage by utilizing biochar.

The technical points of the present invention are:

A high-efficiency and energy-saving sewage treatment device using biochar, mainly includes: a first sedimentation tower, a second sedimentation tower, a disinfection tank and a backwash tank, and the second sedimentation tower, the first sedimentation tower, the disinfection tank and the The backwashing tank is connected, and a control valve is provided at the communication place between the second precipitation tower and the first precipitation tower;

The first sedimentation tower includes: a mud scraping mechanism installed at the bottom, a filter screen for filtering larger impurities, and an impurity cleaning mechanism fixed at the top of the first sedimentation tower for washing the filter screen. The bottom of the sedimentation tower is provided with a mud discharge pipe;

The second precipitation tower comprises: a feed pipe opened at the top thereof, an adsorption pipe used for adsorbing suspended matter in water, a second rotating rod installed at the bottom of the second precipitation tower horizontally for stirring and propelling waste, and A waste box installed at the bottom of the second sedimentation tower, a plurality of progressive fan blades are installed on the second rotating rod, and the second sedimentation tower and the waste box are opened at the bottom of the second sedimentation tower The baffles are connected to each other, the adsorption pipe is an arcuate pipe composed of multiple rows of horizontal pipes connected by a U-shaped pipe, a multi-layer biological carbon layer is arranged inside the adsorption pipe, and the U-shaped pipe at the corner of the adsorption pipe The pipe is connected with the horizontal pipe through the screw ring;

The sterilization box includes: a plurality of sterilization rods arranged on the top and bottom of the sterilization box and a water outlet pipe opened on the side;

The backwash tank includes: a water pump for injecting cleaning liquid into the adsorption pipe, an air pump for injecting gas into the adsorption pipe, and a first power source for supplying power to the water pump and the air pump.

Further, the impurity cleaning mechanism includes an electric telescopic tube installed on the top of the first precipitation tower, a rotating shaft installed at the other end of the electric telescopic tube, two support arms installed on the rotating shaft, and two support arms installed on the support. The brush head on the arm prevents large debris from clogging the filter screen and affecting the water inlet speed.

Further, the tops of the first precipitation tower, the second precipitation tower and the sterilization box are all provided with inspection doors, which are convenient for later maintenance and refueling.

Further, the progressive fan blade is provided with a hollow layer for passing water and a filter screen layer for filtering the biochar on the hollow layer, so that the water and the biochar are separated to facilitate the collection of wastes. .

Further, the communication pipe between the disinfection box and the second filter tower is a fiber water purification pipe, and further adsorption makes the suspended matter in the water stay in the second sedimentation tower.

Further, a solenoid valve is provided where the air pump and the water pump communicate with the adsorption pipe.

Further, the sterilizing rod is connected to the sterilizing box through threads, and can be disassembled and replaced.

Further, the mud scraping mechanism includes a first rotating rod and a plurality of scrapers arranged on the first rotating rod, and the outer end of each scraper is provided with a rubber pad to prevent the inner wall of the sedimentation tower from being scratched. .

Compared with the prior art, the beneficial effects of the present invention are:

First, by setting the impurity cleaning mechanism to speed up the water inflow rate, the risk of the filter screen being blocked by large impurities is prevented, and the sludge that sinks at the bottom and adheres to the inner wall is promptly discharged by setting the sludge scraping mechanism to prevent the sludge from sinking more and more. , occupying too much precipitation space and affecting the water purification efficiency.

Second, by setting an arcuate adsorption tube and setting up a multi-layer adsorption biochar mesh membrane in the adsorption tube, the contact area and contact opportunity between the suspended solids in the water and the biochar are expanded to a greater extent, and the adsorption efficiency is improved. The adsorption of suspended solids gradually reduces the adsorption pressure, and the biochar filled with suspended solids finally settles at the bottom of the second sedimentation tower, and the waste is collected in the waste box by setting the progressive fan blade and the second rotating rod Recycling to reduce adsorption costs.

Third, by setting the fiber water purification pipe between the second sedimentation tower and the disinfection box, the water quality entering the disinfection box is better, and the disinfection rods are arranged at the top and bottom of the disinfection box, which increases the contact between the water and the disinfection rod Opportunities and extended disinfection time to make disinfection more thorough.

Fourth, by setting up a backwash box to backwash the adsorption tube, it is more cost-effective, and the backwash method that combines air flushing backwashing and water flushing backwashing prevents the waste of water resources and has better backwashing effect. , more energy efficient.

Description of drawings

Fig. 1 is the front view of the internal structure schematic diagram of the present invention;

Fig. 2 is the structural representation of the impurity cleaning mechanism of the present invention;

Fig. 3 is the schematic diagram of the U-shaped pipe structure of the adsorption pipe of the present invention;

Fig. 4 is the progressive fan blade structure schematic diagram of the present invention;

Among them, 1, the first sedimentation tower, 11, the water inlet pipe, 12, the impurity cleaning mechanism, 121, the electric telescopic pipe, 122, the support arm, 123, the rotating shaft, 124, the brush head, 13, the filter screen, 14, the scraping mechanism , 141, the first rotary rod, 412, the scraper, 15, the mud pipe, 2, the second sedimentation tower, 21, the adsorption tube, 211, the biochar layer, 212, the screw ring, 22, the second rotary rod, 23 , progressive fan blade, 231, filter screen layer, 232, hollow layer, 24, baffle plate, 25, waste box, 26, feed pipe, 3, disinfection box, 31, disinfection rod, 32, inspection door, 33, Outlet pipe, 4, backwash tank, 41, first power supply, 42, water pump, 43, air pump, 5, motor, 51, second power supply, 6, control valve, 7, fiber water purification pipe, 8, solenoid valve.

Detailed ways

Example:

A high-efficiency and energy-saving sewage treatment device using biochar, mainly includes: a first sedimentation tower 1, a second sedimentation tower 2, a disinfection tank 3 and a backwash tank 4, and the second sedimentation tower 2 and the first sedimentation tower 2 and the first sedimentation tower. The tower 1, the disinfection tank 3 and the backwash tank 4 are communicated with each other, and the second precipitation tower 2 and the first precipitation tower 1 are connected with a control valve 6;

The first sedimentation tower 1 includes: a sludge scraping mechanism 14 installed at the bottom, a filter screen 13 installed in the middle of the first sedimentation tower 1, and impurities fixed on the top of the first sedimentation tower 1 for washing the filter screen 13 The cleaning mechanism 12, the bottom of the first sedimentation tower 1 is provided with a mud outlet pipe 15, and the filter screen 13 is a convex screen with grooves at both ends;

The second precipitation tower 2 includes: a feed pipe 26 opened at the top thereof, an adsorption pipe 21 for adsorbing suspended solids in water, a second precipitation tower installed at the bottom of the second precipitation tower 2 in horizontal rotation for stirring and propelling waste. Two rotating rods 22 and a waste box 25 installed at the bottom of the second settling tower 2 , a plurality of progressive fan blades 23 are installed on the second rotating rod 22 , the second settling tower 2 and the waste container 25 are communicated through the baffle plate 24 opened at the bottom of the second precipitation tower 2, the adsorption tube 21 is an arcuate pipeline composed of multiple rows of horizontal tubes connected by a U-shaped tube, and multiple layers are arranged inside the adsorption tube 21. The biological carbon layer 211, the U-shaped pipe at the corner of the adsorption pipe 21 is communicated with the horizontal pipe through the screw ring 212, and the water inlet of the adsorption pipe 21 is communicated with the first precipitation tower 1 and the second precipitation tower 2 want to connect

Described sterilization box 3 comprises: three sterilization rods 31 staggered up and down on its top and bottom and water outlet pipes 33 opened on the side;

The backwash tank 4 includes: a water pump 42 for injecting cleaning liquid into the adsorption pipe 21 , an air pump 43 for injecting gas into the adsorption pipe 21 , and a first power supply for powering the water pump 42 and the air pump 43 41, the water pump 42 and the air pump 43 are communicated with the water outlet of the adsorption tube 21. During backflushing, this embodiment adopts the method of combined gas and water backflushing, which is better than water backflushing alone, and can save water consumption, First scrub with high-intensity air, and then rinse with micro-expanding water. The air impulse intensity is 8L/(m ² ·s), the flushing time is 5 minutes, and the water impulse intensity is 6L/(m ² ·s), and the duration is 3 minutes.

The impurity cleaning mechanism 12 includes an electric telescopic tube 121 installed on the top of the first precipitation tower, a rotating shaft 123 installed at the other end of the electric telescopic tube 121, two support arms 122 installed on the rotating shaft 123 and The brush head 124 on the support arm 122 and the electric telescopic tube 121 are connected to an external power supply and controlled by a remote control.

The tops of the first precipitation tower 1 , the second precipitation tower 2 and the disinfection box 3 are all provided with access doors 32 .

The progressive fan blade 23 is provided with a hollow layer 232 for passing water and a filter screen layer 231 on the hollow layer 232 for filtering biochar.

The communication pipe between the sterilization box 3 and the second filter tower 2 is a fiber water purification pipe 7, and the outer shell of the fiber water purification pipe 7 is curved and a plurality of adsorption fibers matching the shape of the shell are arranged inside.

A solenoid valve 8 is provided where the air pump 43 and the water pump 42 communicate with the adsorption pipe 21 .

A section of the sterilizing rod 31 is provided with threads and is connected to the sterilizing box 3 through threads, which can be disassembled and replaced.

The mud scraping mechanism 14 includes a first rotating rod 141 and two scrapers 142 arranged on the first rotating rod 141 and each scraper 142 is provided with a rubber pad at the outer end.

The first rotating rod 141 and the second rotating rod 22 are both provided with a motor 5 for providing power, and the two motors 5 work through the second power source 51 .

The sewage treatment efficiency of this equipment is high, and the waste can be recycled through the waste box.

In this example, the biochar adsorption treatment was carried out for the lake sewage, and the following data were obtained as shown in Table 1:

Table 1: Data comparison table of biochar treatment of lake sewage

Using method of the present invention:

The sewage enters the first sedimentation tower 1 through the water inlet pipe 11, and the large impurities are filtered out through the filter screen 13. After the electric telescopic pipe 121 is extended downward, the two support arms 122 are moved to both sides, and the brush head 124 brushes off the filter. The impurities on the net 13 enter the grooves at both ends, open the scraping mechanism 14 to scrape off the dirt on the inner wall of the first precipitation tower 1, and the clean water in the upper part enters the adsorption pipe 21 in the second precipitation tower 2 through the communication pipe for adsorption, The adsorbed water flows into the tower box of the second precipitation tower 2, and after adsorption by the biochar in the tower box, the suspended matter is deposited at the bottom of the tower, and the motor is turned on to rotate the second rotating rod 22, so that the progressive fan blades 23 will be filled with suspension. The biochar of the waste material is collected into the waste box 25, which is convenient for recycling. The water in the second precipitation tower 2 enters the disinfection box 3 after being adsorbed by the adsorption fibers in the water pipe 7, and is sterilized by the disinfection rods 31 arranged at high and low levels. The latter water flows out through the water outlet pipe 33 .

When backwashing, firstly unscrew the control valve 6, so that the sewage obtained after backwashing can be discharged from the equipment, then open the solenoid valve 8, first turn on the air pump 43, and the suspended matter adsorbed on the biochar falls off by the strong pressure air flushing backwashing, The water pump 42 is turned on again, and the suspended solids are flushed out of the equipment through high-pressure water flushing and backwashing.

Claims (8)

1. a high-efficiency and energy-saving utilization biochar treatment sewage device is characterized in that, mainly comprises: the first sedimentation tower (1), the second sedimentation tower (2), the disinfection tank (3) and the backwash tank (4), And the second precipitation tower (2) is communicated with the first precipitation tower (1), the disinfection tank (3) and the backwash tank (4), and the second precipitation tower (2) is connected with the first precipitation tower (2). A control valve (6) is arranged at the communication part of the sedimentation tower (1); The first precipitation tower (1) includes: a mud scraping mechanism (14) installed at the bottom thereof, a filter screen (13) for filtering larger impurities, and a filter screen (13) fixed on the top of the first precipitation tower (1) for washing the soil. The impurity cleaning mechanism (12) of the filter screen (13), a mud outlet pipe (15) is provided at the bottom of the first sedimentation tower (1); The second precipitation tower (2) comprises: a feed pipe (26) opened at the top thereof, an adsorption pipe (21) for adsorbing suspended matter in water, and a horizontally rotating installation at the bottom of the second precipitation tower (2) A second rotating rod (22) for stirring and propelling waste and a waste box (25) installed at the bottom of the second settling tower (2), on which a plurality of progressive The fan blade (23) is communicated between the second precipitation tower (2) and the waste tank (25) through a baffle plate (24) provided at the bottom of the second precipitation tower (2). 21) is an arcuate pipeline composed of multiple rows of horizontal tubes communicated through U-shaped tubes, a multi-layer biological carbon layer (211) is arranged inside the adsorption tube (21), and the U-shaped tube at the bend of the adsorption tube (21) The shape pipe is communicated with the horizontal pipe through the screw ring (212); The sterilization box (3) comprises: a plurality of sterilization rods (31) staggered up and down on the top and bottom of the sterilization box and a water outlet pipe (33) opened on the side; The backwash tank (4) includes: a water pump (42) for injecting cleaning liquid into the adsorption pipe (21), an air pump (43) for injecting gas into the adsorption pipe (21), and a water pump (43) for feeding the water pump ( 42) and the first power supply (41) powered by the air pump (43). 2. A high-efficiency and energy-saving device for treating sewage using biochar according to claim 1, wherein the impurity cleaning mechanism (12) comprises an electric telescopic tube (121) installed on the top of the first precipitation tower, a A rotating shaft (123) at the other end of the electric telescopic tube (121), two support arms (122) mounted on the rotating shaft (123), and a brush head (124) mounted on the support arms (122) ). 3. A high-efficiency and energy-saving device for treating sewage using biochar according to claim 1, wherein the tops of the first sedimentation tower (1), the second sedimentation tower (2) and the disinfection box (3) are all An access door (32) is opened. 4. A high-efficiency and energy-saving device for treating sewage using biochar according to claim 1, wherein the progressive fan blade (23) is provided with a layer of hollow layer (232) for water passage and provided with A filter screen layer (231) for filtering biochar on the hollow layer (232). 5. A high-efficiency and energy-saving device for treating sewage using biochar according to claim 1, wherein the communication pipe between the disinfection box (3) and the second filter tower (2) is a fiber net Water pipe (7). 6. The high-efficiency and energy-saving device for treating sewage using biochar according to claim 1, wherein the air pump (43) and the water pump (42) are communicated and communicated with the adsorption pipe (21) through pipes Set the solenoid valve (8) at the position. 7 . The high-efficiency and energy-saving device for treating sewage with biochar according to claim 1 , wherein the disinfection rod ( 31 ) is connected to the disinfection box ( 3 ) through threads, and can be disassembled and replaced. 8 . 8. The high-efficiency and energy-saving device for treating sewage using biochar according to claim 1, wherein the mud scraping mechanism (14) comprises a first rotating rod (141) and a first rotating rod disposed on the first rotating rod A plurality of scrapers (142) on (141) and the outer ends of each scraper (142) are provided with rubber pads.

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