CN104817229B - A kind of bamboo product Waste Water Treatment - Google Patents

Abstract

The invention relates to a bamboo product wastewater treatment system, comprising a wastewater regulating tank, an enhanced air flotation tank, an ozone oxidation sedimentation tank, a baffle type anoxic anaerobic reaction tank, an aerobic contact oxidation tank, a secondary settling tank and a sand filter tank; The air flotation tank consists of mud and sand area, mixing area and separation area from bottom to top; the ozone oxidation sedimentation tank includes an aeration mixing area and a sedimentation area, and the baffled anoxic anaerobic reaction tank includes a facultative section separated by baffles, Anoxic section and anaerobic section; the aerobic contact oxidation tank is equipped with water inlet pipe, water distribution triangle cone and aeration control system; the wastewater enters the enhanced air flotation tank to remove scum through the adjustment tank, and then the wastewater enters the ozone oxidation sedimentation tank, and the pollutants It is oxidized and decomposed, and then enters the baffle type anoxic anaerobic reaction tank and aerobic contact oxidation tank for anoxic, anaerobic and aerobic reactions, and is discharged after sedimentation and filtration.

Description

A bamboo product wastewater treatment system

technical field

The invention relates to the technical field of wastewater treatment, in particular to a bamboo product wastewater treatment system.

Background technique

In recent years, the bamboo industry has developed rapidly. In the process of drawing bamboo products, the bamboo silk needs to be cooked with hydrogen peroxide to achieve anti-corrosion, moth-proof, and bleaching effects. The bamboo product wastewater generated at this stage has a high concentration of organic matter (20000- 50000mg/L), low pH value (2.5-5), with a certain color and other characteristics. The pollution components in bamboo product wastewater are complex, and this type of wastewater mainly contains cell serous substances, sugars, organic acids, amino acids, bamboo leaf flavonoids, tannins, plant pigments, long-chain alkanes, benzene and esters, etc. pollutants. Bamboo product wastewater is directly discharged into water bodies without treatment, which will cause serious pollution of surface water, and in some areas with high density of bamboo product processing enterprises, even groundwater has been polluted. Therefore, how to effectively treat bamboo product wastewater is of great significance to maintain the ecological environment and ensure the sustainable development of the bamboo product industry.

Due to the influence of many factors such as cost, operability and treatment effect, bamboo product wastewater is not suitable for single physicochemical or biological treatment, but a combination of multiple methods should be considered.

Explore the effective and feasible bamboo products wastewater treatment process to solve the ecological and environmental problems caused by the development of the bamboo industry, so as to provide technical support for the sustainable development of the industry.

Contents of the invention

The technical problem to be solved by the present invention is: in order to solve the above difficult problems in the treatment of wastewater from bamboo products, the present invention provides a wastewater treatment system from bamboo products.

The technical scheme adopted by the present invention to solve the technical problem is: a bamboo product wastewater treatment system, including a wastewater regulating tank, an enhanced air flotation tank, an ozone oxidation sedimentation tank, a baffle type anoxic anaerobic reaction tank, and an aerobic contact oxidation tank , secondary settling tank and sand filter; the wastewater regulating tank, enhanced air flotation tank, ozone oxidation sedimentation tank, baffle type anoxic anaerobic reaction tank, aerobic contact oxidation tank, secondary settling tank and sand filter are connected in sequence.

The waste water regulating pond includes a water inlet pipe and a water outlet pipe for regulating the water quality and water quantity of the bamboo product waste water.

The enhanced air flotation tank includes a water inlet pipe and an outlet pipe for discharging treated water. The enhanced air flotation tank includes a mud sand area, a mixing area and a separation area from bottom to top; the separation area includes a water collection area and The slag collection area located in the water collection area; an aeration pan is arranged between the mud sand area and the mixing area of the enhanced air flotation tank, and a water distribution branch pipe is arranged above the aeration disk, and the water distribution branch pipe is connected to The water inlet pipe, the aeration plate is connected to the fan outside the enhanced air flotation tank through the aeration pipe; a three-phase separator is provided in the separation area, and the three-phase separator includes a deflector and a deflector located on the deflector The triangular deflector ring used in conjunction with the deflector below, the triangular deflector ring is installed on the inner wall of the enhanced air flotation pool, the upper part of the deflector is the same shape as the separation area, the deflector The lower part is trumpet-shaped, and the inner diameter of the lower part of the deflector is larger than the inner diameter of the triangular guide ring; the upper part of the outer wall of the separation zone is provided with an overflow weir, and the overflow weir is connected to the outlet pipe; The slag collection area is equipped with a scum scraper and a scum tank; when the wastewater overflows from bottom to top, the water and scum enter the lower part of the deflector through the triangular diversion ring, and the scum continues to enter the scum collection area upwards, and the water passes through The gap between the deflector plate and the triangular deflector ring enters the catchment area; for better wastewater treatment, the water distribution branch pipe is set in a concentric circle shape or a cross shape, and the water distribution branch pipe has a horizontal radiation outlet; Further, the aeration pan is a microporous aeration pan with micropores evenly arranged; due to the different densities of water and sediment, the separation is realized under the action of a three-phase separator; in order to discharge the treated sediment, the There is a sediment discharge valve at the bottom of the above-mentioned enhanced air flotation tank.

The water outlet pipe of the enhanced air flotation tank communicates with the water inlet pipe of the ozone oxidation sedimentation tank.

The ozone oxidation sedimentation tank includes an aeration mixing zone and a sedimentation zone, an ozone aeration pan is arranged at the bottom of the aeration mixing zone, and a water distribution branch pipe is arranged above the ozone aeration disk, and the water distribution branch pipe is connected to The water inlet pipe, the ozone aeration plate is connected with the fan outside the ozone oxidation sedimentation tank through the aeration pipe, and the fan is connected to the ozone generator through the pipeline; a baffle plate is provided in the described sedimentation area, and the baffle plate is connected with the inner wall of the sedimentation tank Form a waste water flow channel that enters the sedimentation area as waste water. A three-phase separator is installed at the outlet of the sedimentation area. An overflow weir is installed on the upper part of the outlet of the sedimentation area. .

The baffle-type anoxic-anaerobic reaction tank includes an anoxic section, an anoxic section and an anaerobic section separated by a baffle plate, and the head end of the anoxic section is provided with an inlet pipe for feeding waste water, and the anoxic section The end of the section is connected to the head end of the anoxic section, and the end of the anoxic section is connected to the head end of the anaerobic section. The lower part of the baffle plate on the inlet side of the anoxic section and the anaerobic section is provided with a 45-degree corner to avoid water flow when entering the anaerobic section. The impact effect generated by the aerobic section plays the role of buffering water flow and uniform water distribution; the end of the anaerobic section is equipped with a three-phase separator and an overflow weir, and the overflow weir is connected to the outlet pipe; the bottom of the facultative section, anoxic section and anaerobic section Designed as a conical structure, the conical structure is connected to the sludge discharge valve; the facultative section, anoxic section and anaerobic section of the baffled anoxic anaerobic reaction tank are designed as a conical structure, and the top of the conical structure All have independent methane exhaust gas collection pipes. Fillers are all provided in the facultative oxygen section, anoxic section and anaerobic section.

The middle and lower part of the aerobic contact oxidation tank is provided with a water inlet pipe, and the lower part of the water inlet pipe is provided with a water distribution triangle; the aerobic contact oxidation tank is provided with an aeration control system, and the aeration control system includes an aeration plate , a blower and a dissolved oxygen measurement and control device; further, the aeration pan is a microporous aeration pan with micropores evenly arranged thereon, and the aeration pan is connected to the blower through an aeration tube, and the blower is arranged at the aerobic contact oxidation Outside the pool, a dissolved oxygen measurement and control device is set on the upper part of the aerobic contact oxidation tank and under the surface of the wastewater, and the dissolved oxygen measurement and control device regulates the work of the blower according to the oxygen content; the aerobic contact oxidation tank has built-in fillers; the aerobic An overflow weir is arranged at the water outlet of the contact oxidation tank.

The outlet pipe of the aerobic contact oxidation tank is connected to the secondary settling tank, and a sludge return system is provided at the bottom of the secondary settling tank, and a part of the sludge returns to the baffle type anoxic anaerobic reaction tank.

The water after sedimentation treatment in the secondary sedimentation tank enters the sand filter tank through the overflow weir, and is discharged after being filtered.

A kind of method that adopts above-mentioned bamboo product waste water treatment system to carry out waste water treatment, has following steps:

① Bamboo product wastewater enters the wastewater regulating tank through the water inlet pipe to adjust the water quality and quantity.

② Then the wastewater enters the middle and lower part of the separation zone of the enhanced air flotation tank through the water inlet pipe; the aeration disc located under the water inlet pipe of the enhanced air flotation tank generates a large number of fine air bubbles to cause friction in the solid matter in the wastewater and remove other pollutants on the solid matter; aeration The fine air bubbles produced by the air pan adhere to the floating objects to form a mixture that rises under the action of buoyancy. Under the action of the three-phase separator in the separation area of the enhanced air flotation tank, the mixture rises to the slag collection area. Under the action of the slag scraper, The scum enters the scum tank and is cleaned and transported abroad; the sediment sinks to the mud and sand area at the lower part of the enhanced air flotation tank under the action of gravity, and is discharged through the sediment discharge valve at the bottom of the enhanced air flotation tank; the separated water is in the enhanced air flotation tank. The deflector in the three-phase separation area of the floating tank enters the water collection area of the enhanced air flotation tank under the action of the deflector, and is connected to the water inlet pipe of the ozone oxidation sedimentation tank through the overflow weir, the outlet pipe and the connecting pipe.

③Wastewater enters the middle and lower part of the ozone oxidation sedimentation tank through the inlet pipe of the ozone oxidation sedimentation tank and the water distribution branch pipe; the ozone aeration plate located below the water distribution branch pipe of the ozone oxidation sedimentation tank generates a large number of fine bubbles to further rub the solids in the wastewater, At the same time, the macromolecular substances in the wastewater are oxidized into small molecular substances that are easy to absorb and absorb. The oxidized and decomposed wastewater enters the sedimentation area, and the three-phase separator in the sedimentation area realizes the separation of mud and water; the sludge sinks to the ozone under the action of gravity. The lower part of the sedimentation area of the oxidation sedimentation tank is discharged through the mud discharge valve at the bottom; the waste water is connected to the inlet pipe of the baffled anoxic anaerobic reaction tank through the overflow weir, the outlet pipe and the connecting pipe.

④Wastewater enters the lower part of the baffled anoxic anaerobic reaction tank through the inlet pipe of the aerobic section of the baffled anoxic anaerobic reaction tank; Through the sludge bed of each reaction chamber in the facultative section, anoxic section and anaerobic section in turn, the sludge in the reaction tank moves with the up and down flow of wastewater and the rise of biogas, and the blocking effect of baffles and The sedimentation of the sludge itself reduces the flow rate of the sludge, so a large amount of sludge is trapped in the reaction tank, and the microorganisms in the reaction tank fully contact with the organic matter in the wastewater. The facultative bacteria in the facultative stage, the heterotrophic bacteria in the anoxic stage and the anaerobic stage hydrolyze the organic matter in the wastewater into organic acids, decompose the macromolecular organic matter into small molecular organic matter, and convert the insoluble organic matter into soluble organic matter.

⑤After the anaerobic reaction, the three-phase separator installed at the end of the anaerobic section realizes the separation of mud, water and methane gas, and the sludge sinks to the lower part of the baffled anoxic anaerobic reaction tank under the action of gravity , the excess sludge is discharged through the sludge discharge valve at the bottom; the methane waste gas generated by the baffled anoxic anaerobic reaction tank is collected and discharged through the gas collecting pipe at the top of the reaction tank; the treated waste water is connected through the overflow weir, the outlet pipe and the connecting pipe Inlet pipe for aerobic contact oxidation tank.

⑥Wastewater enters the middle and lower part of the aerobic contact oxidation tank through the water inlet pipe, and the water is evenly distributed under the action of the water distribution triangle cone. Micro-bubbles, the dissolved oxygen measurement and control device regulates the work of the blower according to the oxygen content to ensure that the dissolved oxygen in the aerobic contact oxidation pool water is greater than 2mg/L, and the treated wastewater flows out through the overflow weir and the outlet pipe.

⑦The outlet pipe of the aerobic contact oxidation tank is connected to the water distribution pipe of the secondary settling tank, and part of the sedimentation sludge in the secondary settling tank is returned to the baffle type anoxic anaerobic reaction tank, and a part is used as excess sludge.

⑧The water after sedimentation treatment in the secondary settling tank enters the sand filter tank through the overflow weir, and is discharged after being filtered.

⑨Enhanced air flotation tanks, ozone oxidation sedimentation tanks, baffled anoxic anaerobic reaction tanks, and the remaining sludge discharged from secondary sedimentation tanks are dehydrated and transported abroad.

The beneficial effects of the present invention are: the present invention has simple structure, low cost, relatively good depth effect on bamboo product wastewater treatment, and convenient management.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a schematic structural view of an enhanced air flotation tank according to an embodiment of the present invention.

In Figure 1: 1. Strengthened air flotation tank, 1-1. Strengthened air flotation tank inlet pipe, 1-2. Mud and sand area, 1-3. Mixing area, 1-4. Water collection area, 1-5. Slag collection area, 1-6. Enhanced air flotation tank aeration disc, 1-7. Strengthened air flotation tank water distribution branch pipe, 1-8. Blower and gas flow meter, 1-9. Strengthened air flotation tank three-phase separator, 1-10. Overflow weir , 1-11. Scraper plate, 1-12. Scum tank, 1-13. Sediment discharge valve.

Fig. 2 is a schematic structural diagram of an ozone oxidation sedimentation tank according to an embodiment of the present invention.

In Figure 2: 2. Ozone oxidation sedimentation tank, 2-1. Aeration mixing zone, 2-2. Sedimentation zone, 2-3. Ozone aeration pan, 2-4. Water distribution branch pipe, 2-5. Water inlet pipe , 2-6. Ozone blower and gas flow meter, 2-7. Ozone generator, 2-8. Baffle, 2-9. Ozone oxidation sedimentation tank three-phase separator, 2-10. Ozone oxidation sedimentation tank overflow weir , 2-11. Mud discharge valve.

Fig. 3 is a schematic structural view of a baffled anoxic anaerobic reaction tank according to an embodiment of the present invention.

Among Fig. 3: 3. baffle type anoxic anaerobic reaction tank, 3-1. baffle plate, 3-2. concurrent oxygen section, 3-3. anoxic section, 3-4. anaerobic section, 3- 5. The inlet pipe of the baffled anoxic anaerobic reaction tank, 3-6. The three-phase separator of the baffled anoxic anaerobic reaction tank, 3-7. The overflow weir of the baffled anoxic anaerobic reaction tank, 3- 8. Sludge discharge valve, 3-9. Upper cover, 3-10. Air collecting pipe, 3-11. Packing.

Fig. 4 is a schematic structural diagram of an aerobic contact oxidation tank according to an embodiment of the present invention.

In Figure 4: 4. Aerobic contact oxidation tank, 4-1. Aerobic contact oxidation tank inlet pipe, 4-2. Water distribution triangle cone, 4-3. Aeration control system, 4-4. Filler, 4- 5. Aerobic contact oxidation tank overflow weir.

Fig. 5 is a process flow diagram of an embodiment of the present invention.

detailed description

The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

Example

As shown in Figures 1 to 5, a bamboo product wastewater treatment system of the present invention includes a wastewater regulating tank, an enhanced air flotation tank 1, an ozone oxidation sedimentation tank 2, a baffle type anoxic anaerobic reaction tank 3, and an aerobic contact oxidation tank. Pond 4, secondary settling tank and sand filter; said wastewater regulating tank, enhanced air flotation tank 1, ozone oxidation sedimentation tank 2, baffle type anoxic anaerobic reaction tank 3, aerobic contact oxidation tank 4, secondary settling tank and The sand filters are connected sequentially.

The waste water regulating pond includes a water inlet pipe and a water outlet pipe for regulating the water quality and water quantity of the bamboo product waste water.

The enhanced air flotation tank 1 includes a water inlet pipe 1-1 and an outlet pipe for discharging treated water, and the enhanced air flotation tank is sequentially composed of a mud sand area 1-2, a mixing area 1-3 and a separation area from bottom to top; The separation zone includes a water collection area 1-4 and a slag collection area 1-5 located in the water collection area; an aeration tray is arranged between the mud sand area 1-2 and the mixing area 1-3 of the enhanced air flotation tank 1-6, the top of the aeration pan is provided with a water distribution branch pipe 1-7, the water distribution branch pipe is connected to the water inlet pipe 1-1, and the aeration pan 1-6 is connected to a reinforced Fan 1-8 outside the air flotation pool. A three-phase separator 1-9 is provided in the separation zone, and the three-phase separator 1-9 includes a deflector and a triangular deflector ring located below the deflector and used in conjunction with the deflector. The triangular deflector ring is installed on the inner wall of the enhanced air flotation pool. The upper part of the deflector is in the same shape as the separation area, the lower part of the deflector is trumpet-shaped, and the inner diameter of the lower part of the deflector is greater than the inner diameter of the triangular diversion ring; the upper part of the outer wall of the separation zone is provided with an overflow weir 1-10, and the overflow weir 1-10 is connected to the outlet pipe; the slag collecting area 1-5 is equipped with scraping Plate 1-11 and scum tank 1-12; when the waste water overflows from bottom to top, water and scum enter the lower part of the deflector through the triangular diversion ring together, and the scum continues to enter the scum collecting area 1-5 upwards, Water enters the catchment area 1-4 through the gap between the deflector plate and the triangular deflector ring; for better wastewater treatment, the water distribution branch pipes 1-7 are arranged in the shape of concentric circles or crosses, and the water distribution There is a horizontal radiation outlet on the branch pipe; further, the aeration pan is a microporous aeration pan with micropores evenly arranged; due to the different densities of water and sediment, separation is realized under the action of a three-phase separator; in order to The treated sediment is discharged, and the bottom of the enhanced air flotation tank is provided with a sediment discharge valve 1-13.

The water outlet pipe of the enhanced air flotation tank 1 communicates with the water inlet pipe 2-5 of the ozone oxidation sedimentation tank 2.

The ozone oxidation sedimentation tank 2 includes an aeration mixing zone 2-1 and a sedimentation zone 2-2, an ozone aeration pan 2-3 is arranged at the bottom of the aeration mixing zone, and a cloth is arranged above the ozone aeration pan. The water branch pipe 2-4, the water distribution branch pipe 2-4 is connected to the water inlet pipe 2-5, the ozone aeration plate 2-3 is connected to the fan outside the ozone oxidation sedimentation tank through the aeration pipe, and the fan is connected through the pipeline Ozone generator 2-7; Described settling area is provided with baffle plate 2-8, and this baffle plate and the inner wall of settling tank form the waste water channel that enters settling area as waste water, and the outlet of settling area is provided with three-phase separator 2 -9, an overflow weir 2-10 is provided on the upper part of the outlet of the sedimentation area, and the bottom of the sedimentation area is designed as a conical structure, and a mud discharge valve 2-11 is arranged at the bottom of the sedimentation area.

The baffle type anoxic anaerobic reaction tank 3 includes a part-aerobic section 3-2, an anoxic section 3-3 and anaerobic section 3-4 separated by a baffle plate 3-1, and the part-aerobic section 3 The head of -2 is provided with an inlet pipe 3-5 for feeding waste water, the end of the anoxic section 3-2 is connected to the head of the anoxic section 3-3, and the end of the anoxic section 3-3 is connected to the anaerobic section 3-4. The lower part of the baffle on the inlet side of the anoxic section 3-3 and the anaerobic section 3-4 is provided with a 45-degree corner to avoid the impact of the water flow when it enters, thereby buffering the water flow and The role of uniform water distribution; the end of the anaerobic section 3-4 is provided with a three-phase separator 3-6 and an overflow weir 3-7, and the overflow weir 3-7 is connected to the outlet pipe; the anaerobic section 3-2, anoxic section 3 -3 and the bottom of the anaerobic section 3-4 are designed into a conical structure, and the conical structure is connected to the sludge discharge valve 3-8; The upper cover 3-9 of the section is designed as a conical structure, and the top of the conical structure is provided with an independent methane waste gas collector 3-10; 11.

The middle and lower part of the aerobic contact oxidation tank 4 is provided with a water inlet pipe 4-1, and the lower part of the water inlet pipe 4-1 is provided with a water distribution triangle cone 4-2; the aerobic contact oxidation tank 4 is provided with an aeration control System 4-3, the aeration control system 4-3 includes an aeration pan, a blower, and a dissolved oxygen measurement and control device; further, the aeration pan is a microporous aeration pan with micropores uniformly arranged therein. The aeration pan is connected to a blower through an aeration pipe, and the blower is arranged outside the aerobic contact oxidation tank, and a dissolved oxygen measurement and control device is installed on the upper part of the aerobic contact oxidation tank and under the wastewater surface, and the dissolved oxygen measurement and control device is based on the oxygen content. The blower is regulated and operated; the aerobic contact oxidation tank is built with filler 4-4; the outlet of the aerobic contact oxidation tank is provided with an overflow weir 4-5.

The outlet pipe of the aerobic contact oxidation tank 4 is connected to the secondary sedimentation tank, and a sludge return system is provided at the bottom of the secondary sedimentation tank, a part of the sludge is returned to the baffle type anoxic anaerobic reaction tank 3, and a part is excess sludge.

The water after sedimentation treatment in the secondary sedimentation tank enters the sand filter tank through the overflow weir, and is discharged after being filtered.

A kind of method that adopts above-mentioned bamboo product waste water treatment system to carry out waste water treatment, has following steps:

① Bamboo product wastewater enters the wastewater regulating tank through the water inlet pipe to adjust the water quality and quantity.

② Then the waste water enters the middle and lower part of the separation zone of the enhanced air flotation tank through the water inlet pipe 1-1; the aeration disc 1-6 located under the water inlet pipe of the enhanced air flotation tank produces a large number of fine air bubbles to cause friction of the solids in the waste water and remove the solids on the surface Other pollutants; the fine air bubbles produced by the aeration disc 1-6 adhere to the floating matter to form a mixture that rises under the action of buoyancy, and under the action of the three-phase separator 1-9 in the enhanced air flotation tank, the mixture rises to the slag collection Area 1-5, under the action of scraper plate 1-11, the scum enters the scum tank 1-12 and is cleaned and transported; the sediment sinks to the mud sand area 1- at the lower part of the enhanced air flotation tank under the action of gravity 2. Discharge through the sediment discharge valve 1-13 at the bottom of the enhanced air flotation tank; the separated treated water enters the water collection area 1-4 of the enhanced air flotation tank under the action of the deflector in the three-phase separation area of the enhanced air flotation tank, and passes through the overflow weir 1 -10. The water outlet pipe and the connecting pipe are connected to the water inlet pipe 2-5 of the ozone oxidation sedimentation tank.

③Wastewater enters the middle and lower part of the ozone oxidation sedimentation tank 2 through the water inlet pipe 2-5 of the ozone oxidation sedimentation tank and the water distribution branch pipe 2-4; the ozone aeration plate 2-3 located below the water distribution branch pipe of the ozone oxidation sedimentation tank produces a large number of fine air bubbles The solid matter in the wastewater is further rubbed, and at the same time, the macromolecular substances in the wastewater are oxidized into small molecular substances that are easy to absorb and absorb. The oxidized and decomposed wastewater enters the wastewater flow channel in the sedimentation area, and the three-phase separator in the sedimentation area 2- 9 Realize the separation of mud and water; the sludge sinks under the action of gravity to the lower part of the sedimentation zone 2-2 of the ozone oxidation sedimentation tank, and is discharged through the mud discharge valve 2-11 at the bottom; the waste water passes through the overflow weir 2-10, the outlet pipe and the connection The pipe is connected with the water inlet pipe 3-5 of the baffle type anoxic anaerobic reaction tank.

④Wastewater enters the lower part of the baffled anoxic anaerobic reaction tank 3 through the inlet pipe 3-5 of the aerobic section of the baffled anoxic anaerobic reaction tank; The plate advances up and down, and passes through the sludge bed of each reaction chamber of the facultative section 3-2, anoxic section 3-3 and anaerobic section 3-4 in turn. The sludge in the reaction pool flows up and down with the wastewater and biogas The movement of the rising effect, the blocking effect of the baffle plate and the sedimentation effect of the sludge itself reduce the flow rate of the sludge, so a large amount of sludge is trapped in the reaction tank, the microorganisms in the reaction tank and the organic matter in the wastewater Full contact. The facultative bacteria in the facultative stage 3-2, the heterotrophic bacteria in the anoxic stage 3-3 and the anaerobic stage 3-4 hydrolyze the organic matter in the wastewater into organic acids, and decompose the macromolecular organic matter into small molecular organic matter. Organic matter is converted into soluble organic matter.

⑤ After the anaerobic reaction, the three-phase separator 3-6 installed at the end of the anaerobic section 3-4 realizes the separation of mud, water and methane gas, and the sludge sinks under the action of gravity to the baffle type anoxic In the lower part of the anaerobic reaction tank, the excess sludge is discharged through the sludge discharge valve 3-8 at the bottom; the methane waste gas generated by the baffled anoxic anaerobic reaction tank is collected and discharged through the gas collecting pipe 3-10 at the top of the reaction tank; the waste water is discharged through The overflow weir, the outlet pipe and the connecting pipe are connected to the water inlet pipe 4-1 of the aerobic contact oxidation tank.

⑥Waste water enters the middle and lower part of the aerobic contact oxidation tank 4 through the water inlet pipe 4-1, and the water is evenly distributed under the action of the water distribution triangle 4-2. The measurement and control device regulates the work of the blower according to the oxygen content to ensure that the dissolved oxygen in the aerobic contact oxidation pool water is greater than 2mg/L, and the treated wastewater flows out through the overflow weir 4-5 and the outlet pipe.

⑦ The outlet pipe of the aerobic contact oxidation tank is connected to the water distribution pipe of the secondary settling tank, and part of the sedimentation sludge in the secondary settling tank is returned to the baffle type anoxic anaerobic reaction tank 3, and a part is used as excess sludge.

⑧The water after sedimentation treatment in the secondary settling tank enters the sand filter tank through the overflow weir, and is discharged after being filtered.

⑨Enhanced air flotation tank 1, ozone oxidation sedimentation tank 2, baffled anoxic anaerobic reaction tank 3, and the remaining sludge discharged from the secondary sedimentation tank is dehydrated and transported abroad.

Inspired by the above-mentioned ideal embodiment according to the present invention, through the above-mentioned description content, relevant workers can make various changes and modifications within the scope of not departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, but must be determined according to the scope of the claims.

Claims (2)

1. a bamboo product Waste Water Treatment, it is characterised in that: include wastewater equalization pond, strengthening flotation tank (1), ozone oxidation sedimentation tank (2), deflector type anoxia anaerobic reation pool (3), aerobic contact oxidation pond (4), Second pond and sand filter；

Described regulating reservoir includes water inlet pipe and outlet pipe, for regulating water quality and the water yield of bamboo product waste water；

Described strengthening flotation tank (1) includes water inlet pipe (1-1) and for discharging the outlet pipe of water after process, Described strengthening flotation tank sequentially consists of silt particle district (1-2), mixed zone (1-3) and Disengagement zone；Described Disengagement zone include gathering ground (1-4) and be positioned at Nei Jizha district, gathering ground (1-5)；Described strengthening flotation tank Aeration plate (1-6), being arranged over of described aeration plate it is provided with between silt particle district (1-2) and mixed zone (1-3) Water distribution branch pipe (1-7), described water distribution branch pipe connects water inlet pipe (1-1), and described aeration plate (1-6) is by exposing Trachea connects the blower fan having outside strengthening flotation tank；Three phase separator (1-9) it is provided with in described Disengagement zone, described Three phase separator (1-9) include deflector and be positioned at below deflector with deflector with the use of triangle lead Stream ring, described triangle guide ring be arranged on strengthening flotation tank inwall on, the top of described deflector with The shape of Disengagement zone is identical, and the bottom of described deflector is horn-like, the bottom of described deflector interior Footpath is more than the internal diameter of triangle guide ring；The top of described Disengagement zone outer wall is provided with overfalling weir (1-10), described Overfalling weir (1-10) be connected with outlet pipe；Described Ji Zhaqu (1-5) is laid with scum board (1-11) and scum silica frost Groove (1-12)；When waste water overflows from the bottom up, water is entered under deflector by triangle guide ring together with scum silica frost Portion, scum silica frost continues up to enter Ji Zhaqu (1-5), and water is entered by the gap between deflector and triangle guide ring Enter gathering ground (1-4)；The effect processed for waste water is more preferable, and described water distribution branch pipe (1-7) is arranged to one heart Toroidal or cross shape, water distribution branch pipe has horizontal radiation outlet；Further, described aeration plate It it is the pore type aeration plate being evenly arranged with micropore；Due to water, sedimentary density difference, in three phase separation Realize under device effect separating；In order to discharge the precipitate after process, it is heavy to be provided with bottom described strengthening flotation tank Shallow lake thing drain valve (1-13)；

Described ozone oxidation sedimentation tank (2) includes aeration mixed zone (2-1) and settling zone (2-2), and aeration mixes Be provided with ozonation aerated dish (2-3) bottom district, described ozonation aerated dish be arranged over water distribution branch pipe (2-4), Described water distribution branch pipe (2-4) connects water inlet pipe (2-5), and described ozonation aerated dish (2-3) is by aeration tube even It is connected to the blower fan outside ozone oxidation sedimentation tank, blower and pipeline connection ozonator (2-7)；Described precipitation Being provided with baffle plate (2-8) in district, this baffle plate forms the waste water stream as waste water entrance settling zone with the inwall of sedimentation tank Road, the exit of settling zone is provided with three phase separator (2-9), and the outlet top of settling zone is provided with overfalling weir (2-10), the tapered structure of settling zone bottom design, bottom settling zone, it is provided with mud valve (2-11)；

Described deflector type anoxia anaerobic reation pool (3) includes the double oxygen section being separated into by deflection plate (3-1) (3-2), anoxia section (3-3) and anaerobism section (3-4), described double oxygen section (3-2) head end is provided with for supplying Entering the water inlet pipe (3-5) of waste water, oxygen section (3-2) end of holding concurrently connects with anoxia section (3-3) head end, anoxia Section (3-3) end connects with anaerobism section (3-4) head end；Described anoxia section (3-3) and anaerobism section (3-4) The bottom of water inlet side deflection plate be provided with the corner of 45 degree, the impact produced during to avoid current to enter work With, thus play buffering current and the effect of water distribution uniformity；Anaerobism section (3-4) end is provided with three phase separator (3-6) with overfalling weir (3-7), overfalling weir (3-7) connects outlet pipe；Described double oxygen section (3-2), lack Oxygen section (3-3) and the tapered structure of anaerobism section (3-4) bottom design, pyramidal structure connects mud discharging valve (3-8)；The upper cover (3-9) of double oxygen section, anoxia section and the anaerobism section of described deflector type anoxia anaerobic reation pool Being designed to conical structure, conical structure top is designed with methane waste product discharge (3-10), described double oxygen It is designed with filler (3-11) in section, anoxia section and anaerobism section；

The interior middle and lower part of described aerobic contact oxidation pond (4) is provided with water inlet pipe (4-1), described water inlet pipe (4-1) Bottom is provided with water distribution pyrometric cone (4-2)；Described aerobic contact oxidation pond (4) is provided with aeration regulator control system (4-3), Described aeration regulator control system (4-3) includes aeration plate, aerator and dissolved oxygen sensing regulation device；Further, Described aeration plate is the pore type aeration plate being evenly arranged with micropore；Described aeration plate is connected by aeration tube Aerator, aerator is arranged on outside aerobic contact oxidation pond, the top in aerobic contact oxidation pond, the waste water water surface Under dissolved oxygen sensing regulation device is set, described dissolved oxygen sensing regulation device regulates and controls aerator according to oxygen content Work；Described aerobic contact oxidation pond is built-in with filler (4-4)；The exit in described aerobic contact oxidation pond It is laid with downflow weir (4-5)；

The outlet pipe of described aerobic contact oxidation pond (4) connects second pond, is provided with sludge reflux bottom second pond System, a part of sludge reflux is to deflector type anoxia anaerobic reation pool (3)；

Water after sedimentation in secondary sedimentation tank processes enters sand filter through downflow weir, qualified discharge after filtration.

2. use the method that bamboo product Waste Water Treatment as claimed in claim 1 carries out waste water process, There are following steps:

1. bamboo product waste water enters wastewater equalization pond regulating water quality and the water yield by water inlet pipe；

The most then waste water enters the middle and lower part of strengthening flotation tank Disengagement zone by water inlet pipe (1-1)；It is positioned at strengthening Aeration plate (1-6) below flotation tank water inlet pipe produces a large amount of tiny bubble makes the solids generation in waste water rub Wipe, remove other pollutant on solids；The tiny bubble that aeration plate (1-6) produces adheres to supernatant Form mixture to rise under buoyancy, under the effect of strengthening flotation tank three phase separator (1-9), mixed Zoarium rises to Ji Zhaqu (1-5), and under the effect of scum board (1-11), scum silica frost enters scum trough (1-12) And cleaned outward transport；Precipitate sinks to strengthen the silt particle district (1-2) of flotation tank bottom under gravity, Discharged by the sediment discharge valve (1-13) bottom strengthening flotation tank；Water after separating treatment is at strengthening gas Enter strengthening flotation tank gathering ground (1-4) under the deflector effect of Fu Chi three-phase separation area, pass through overfalling weir (1-10), outlet pipe connects the water inlet pipe (2-5) of ozone oxidation sedimentation tank with connecting tube；

3. waste water enters ozone by ozone oxidation sedimentation tank water inlet pipe (2-5) and water distribution branch pipe (2-4) The middle and lower part of oxidization and sedimentation basin (2)；It is positioned at the ozonation aerated dish below ozone oxidation sedimentation tank water distribution branch pipe (2-3) producing a large amount of tiny bubble makes the solids in waste water rub further, simultaneously big point in waste water Sub-material is oxidized to be prone to absorb and the small-molecule substance of absorption, and the waste water after oxidation Decomposition enters settling zone Waste water runner, the three phase separator (2-9) of settling zone realizes mud-water separation；Mud under gravity under Sink to the bottom of ozone oxidation sedimentation tank settling zone (2-2), discharged by the mud valve (2-11) of bottom； Waste water enters the water inlet pipe of deflector type anoxia anaerobic reation pool by overfalling weir (2-10), outlet pipe and connecting tube (3-5)；

4. waste water by deflector type anoxia anaerobic reation pool hold concurrently oxygen section water inlet pipe (3-5) enter deflector type anoxia The bottom of anaerobic reation pool (3)；Waste water enters deflector type anoxia anaerobic reation pool tailing edge deflection plate (3-1) Advance up and down, pass sequentially through double oxygen section (3-2), anoxia section (3-3) and anaerobism section (3-4) each instead Answering the Sludge Bed of room, the mud in reaction tank moves along with flowing up and down and the effect of biogas rising of waste water, The barrier effect of deflection plate (3-1) and the settlement action of mud self make again the flow velocity of mud reduce, the most greatly The mud of amount is all trapped within reaction tank, and the microorganism in reaction tank is fully contacted with the Organic substance in waste water； The heterotrophic bacteria of the amphimicrobe of oxygen section (3-2), anoxia section (3-3) and the anaerobism section (3-4) held concurrently is by waste water Hydrolysis of organic matter is organic acid, makes larger molecular organics be decomposed into small organic molecule, insoluble Organic substance Change into dissolved organic matter；

5. the three phase separator (3-6) that the waste water after anaerobic reaction is provided with at anaerobism section (3-4) end realizes Mud, water, the separation of methane gas, mud sinks to deflector type anoxia anaerobic reation pool under gravity Bottom, unnecessary mud is discharged by the mud discharging valve (3-8) of bottom；Deflector type anoxia anaerobic reation pool The methane waste product produced collects discharge by reaction tank top discharge (3-10)；Waste water by overfalling weir, Outlet pipe and connecting tube enter the water inlet pipe in aerobic contact oxidation pond (4)；

6. waste water enters the middle and lower part in aerobic contact oxidation pond (4) by water inlet pipe (4-1), at water distribution three Water distribution uniformity under the effect of pyramid (4-2), described aeration plate is the pore type aeration being evenly arranged with micropore Dish, produces substantial amounts of microbubble, and described dissolved oxygen sensing regulation device works according to oxygen content regulation and control aerator, Guarantee that the dissolved oxygen in aerobic contact oxidation water passes through downflow weir (4-5) more than 2mg/L, the waste water after process Flow out with outlet pipe；

7. the outlet pipe of aerobic contact oxidation pond (4) connects the water distributor of second pond, the precipitating sludge of second pond A part of sludge reflux is in deflector type anoxia anaerobic reation pool (3), and a part is as excess sludge；

8. the water after sedimentation in secondary sedimentation tank processes enters sand filter, qualified discharge after filtration through second pond downflow weir；

9. strengthen flotation tank (1), ozone oxidation sedimentation tank (2), deflector type anoxia anaerobic reation pool (3), Transport outward with after the excess sludge dehydration of second pond discharge.