Anaerobic device for phenolic resin wastewater treatment

Abstract

The utility model discloses an anaerobic device for phenolic resin wastewater treatment, which comprises an anaerobic tank externally connected with a three-phase separation tank. A detachable maintenance cover plate I is arranged in the center of the top surface of the anaerobic tank, and a combustible gas detector port I is formed in the outer side of the maintenance cover plate I; an anaerobic water outlet is formed in the side of the anaerobic jar close to the top end; an anaerobic water inlet is formed in the side of the anaerobic jar close to the bottom end; a detachable maintenance cover plate II is arranged in the center of the top surface of the three-phase separation tank; a combustible gas detection meter port II is formed in the outer side of the maintenance cover plate II; a water outlet II is formed in the side surface of the three-phase separation tank close to the top; a water inlet II is formed in the bottom of the three-phase separation tank; the anaerobic water outlet is connected with the water inlet II. According to the utility model, the three-phase separator is externally connected to separate activated sludge, DCS automatic control can be carried out, and the result that anaerobic bacteria reduce COD can be reported in time.

Description

TECHNICAL FIELD

[0001] The utility model relates to phenolic resin wastewater treatment equipment field, concretely relates to an anaerobic device for phenolic resin wastewater treatment. BACKGROUND

[0002] The existing phenolic resin wastewater pretreatment mode is polymerization, neutralization, precipitation, iron-carbon hydrolysis treatment, anaerobic treatment, aerobic treatment and module separation treatment.

[0003] Anaerobic treatment is the subsequent step of iron-carbon hydrolysis treatment, mainly providing a survival environment for anaerobic bacteria to treat wastewater, and the organic matter in the wastewater is converted into small molecular substances, including methane, carbon dioxide, water, hydrogen sulfide, ammonia and the like, through the joint action of a large number of microorganisms. The anaerobic treatment is to treat the wastewater with COD greater than 10000 to less than about 6000, and then discharge it into an aerobic tank for treatment, so that the pretreated wastewater meets the standard and then enters a sewage treatment plant.

[0004] The patent specification with publication number CN209352630U discloses an anaerobic tank for wastewater treatment, which comprises a steel tank body, a sludge bed area, a suspended area, a clarification area, a tank bottom water distributor, a primary three-phase separator, a secondary three-phase separator, a water outlet weir and a gas-liquid separation tank. The wastewater is pumped into the tank bottom water distributor through the wastewater inlet pipe, the water distribution branches of the tank bottom water distributor are symmetrically arranged with downward water outlets, and the side of the water outlet is provided with a reflection baffle. The wastewater flows in the form of a single high-speed water column to the bottom of the steel tank body and is then reflected and sprayed to the reflection baffle, and then spreads in a scattered state to the surrounding area, so that the wastewater distribution is more uniform. The organic matter in the wastewater is converted by the anaerobic microorganisms in the sludge bed area to produce a large amount of biogas, which is then separated into gas, liquid and solid phases by the primary three-phase separator and the secondary three-phase separator. The anaerobic tank has the characteristics of high energy efficiency, high treatment efficiency, uniform tank bottom liquid inlet and water distribution, rapid and sufficient mixing of anaerobic sludge and liquid inlet, and better suitability for anaerobic biochemical treatment of wastewater from textile finishing pretreatment. SUMMARY

[0005] The utility model provides a kind of anaerobic device for phenolic resin wastewater treatment, can carry out DCS automation control, can report the result of anaerobic bacteria reducing COD in time, since anaerobic device occupies small area and height, save land area, since anaerobic device height is high, three-phase separator is large, not conducive to separating anaerobic active granular sludge, the utility model thus separates active sludge by three-phase separator external connection.

[0006] An anaerobic device for phenolic resin wastewater treatment, comprising an anaerobic tank, the anaerobic tank is externally connected to a three-phase separation tank.

[0007] The anaerobic tank top surface center is provided with a removable maintenance cover plate 1, and the outer side of the maintenance cover plate 1 is provided with a combustible gas detection port 1; the anaerobic tank side near the top end is provided with an anaerobic water outlet; the anaerobic tank side near the bottom end is provided with an anaerobic water inlet;

[0008] The top surface of the three-phase separation tank is provided with a removable maintenance cover plate 2, and the outer side of the maintenance cover plate 2 is provided with a combustible gas detection port 2; the three-phase separation tank side near the top end is provided with a water outlet 2; the bottom of the three-phase separation tank is provided with a water inlet 2;

[0009] The anaerobic water outlet is connected with the water inlet 2. The water in the anaerobic tank flows from the anaerobic water outlet to the water inlet 2 and enters the three-phase separation tank.

[0010] In some embodiments, the anaerobic device for phenolic resin wastewater treatment, the anaerobic tank side near the bottom end is uniformly arranged with a plurality of compressed nitrogen gas inlets.

[0011] In some embodiments, the anaerobic device for phenolic resin wastewater treatment, the three-phase separation tank bottom is provided with a nitrogen gas inlet 2.

[0012] In some embodiments, the anaerobic device for phenolic resin wastewater treatment, the anaerobic tank top surface outside the maintenance cover plate 1 is provided with a top manhole port 1, a tail gas absorption tube port 1, an emergency pressure relief port 1, an online pressure detection port 1, a pressure gauge port 1, an ultrasonic liquid level meter port 1, a sight glass port 1, a multifunctional port 1 and a defoaming agent port 1.

[0013] In some embodiments, the anaerobic device for phenolic resin wastewater treatment, the three-phase separation tank top surface outside the maintenance cover plate 2 is provided with a top manhole port 2, a tail gas absorption tube port 2, an emergency pressure relief port 2, an online pressure detection port 2, a pressure gauge port 2, an ultrasonic liquid level meter port 2, a sight glass port 2, a multifunctional port 2 and a defoaming agent port 2.

[0014] In some embodiments, the anaerobic device for phenolic resin wastewater treatment, the anaerobic tank side near the top end is provided with a circulating outlet, the anaerobic tank side near the bottom end is provided with a blowdown port and a circulating inlet; the circulating outlet and the blowdown port are used for connecting the inlet of the filter press tank; the circulating inlet is used for connecting the wastewater outlet after pressure filtration of the filter press tank.

[0015] In some embodiments, the anaerobic device for phenolic resin wastewater treatment, the three-phase separation tank side near the top end is provided with a backflow outlet, the three-phase separation tank bottom is provided with a sludge backflow port and a sludge discharge port; the backflow outlet and the sludge discharge port are used for connecting the inlet of the filter press tank, and the sludge backflow port is used for connecting the wastewater outlet after pressure filtration of the filter press tank.

[0016] In some embodiments, the anaerobic device for phenolic resin wastewater treatment, the anaerobic tank is provided with a reinforcing rib one at the top, an online dissolved oxygen meter one, an online COD detector one, an online thermometer one, an online pH meter, an online salinity meter and two oppositely arranged side manholes one on the side. Optionally, the online dissolved oxygen meter one has multiple ones, which are respectively located at different heights on the side of the anaerobic tank. Optionally, the online COD detector one has multiple ones, which are respectively located at different heights on the side of the anaerobic tank.

[0017] In some embodiments, the anaerobic device for phenolic resin wastewater treatment, the three-phase separation tank is provided with an online dissolved oxygen meter two, an online COD detector two, an online thermometer two and two oppositely arranged side manholes two on the side; the three-phase separation tank is provided with a sludge sampling port at the bottom.

[0018] In some embodiments, the anaerobic device for phenolic resin wastewater treatment, the anaerobic tank is provided with one or more sets of independently controlled temperature control inner coils; the temperature control inner coils are all lower-inlet and upper-outlet, and the inlets are connected with cold water or steam water.

[0019] In some embodiments, the anaerobic device for phenolic resin wastewater treatment, the three-phase separation tank is provided with a three-phase separator; the three-phase separator includes a baffle, an air chamber and an air port, wherein the air port is in communication with the air chamber, and the baffle is used for at least blocking and retaining sludge. Further, the baffle, the air chamber and the air port can be arranged in sequence from bottom to top.

[0020] The water, sludge and tail gas in the three-phase separation tank are separated by the baffle, the tail gas enters into the gas chamber and is discharged to the top of the tank through the gas port, the liquid overflows from the gas chamber to the water outlet two and is discharged to the aerobic tank after being separated from the sludge by the baffle, the solid sludge flocculates and the particles gradually increase and slowly settle to the bottom of the tank along the inclined wall of the baffle under the action of gravity, a large amount of anaerobic sludge is reserved in the bottom of the anaerobic tank, and the sludge with good sedimentation and coagulation performance forms a sludge layer in the lower part, the wastewater to be treated enters the anaerobic sludge layer from the anaerobic water inlet and is mixed with the sludge in the sludge layer, the microorganisms in the sludge decompose the organic matters in the wastewater and convert the organic matters into biogas, a sludge with a relatively thin sludge concentration and water rises to the upper part of the anaerobic tank and enters the upper part of the anaerobic tank, the biogas is continuously discharged in the form of small bubbles, the small bubbles continuously combine and gradually form larger bubbles during the rising process, the bubbles are taken to the incinerator by the negative pressure at the tail gas suction port and are burned to treat the tail gas, part of the anaerobic sludge in the anaerobic tank settles to the inside of the anaerobic tank under the action of gravity, and the other anaerobic sludge, water and small biogas are discharged from the anaerobic water outlet and enter the second water inlet of the three-phase separation tank through the pipeline to separate the solid, liquid and gas in the three-phase separation tank, when the biogas in the three-phase separation tank meets the baffle in the lower part of the separator, the biogas is folded around the baffle and then passes through the water layer to enter the gas chamber, is concentrated in the gas chamber and is guided out through the gas port, the solid-liquid mixture enters the bottom of the three-phase separation tank after reflection, the sludge in the wastewater flocculates, the particles gradually increase and settle to the bottom of the tank under the action of gravity, the separated wastewater is discharged from the three-phase separation tank through the water outlet two, the solid sludge slides back to the tank along the inclined wall and is discharged to the external pressure filter tank through the sludge discharge port in the bottom.

[0021] In some embodiments, the anaerobic device for phenolic resin wastewater treatment is provided with a second reinforcing rib at the top of the three-phase separation tank, an ear seat at the top of the side of the three-phase separation tank and a support frame at the bottom of the three-phase separation tank.

[0022] Compared with the prior art, the utility model has the advantages of:

[0023] 1. The height of the anaerobic tank used in the biochemical treatment is low, the water inlet is large, the land occupation is large, the use of the anaerobic tank is high in height and large in volume, the land can be saved, and the company can use the excess land for other purposes (for example, a warehouse).

[0024] 2、Anaerobic tank covers a large area, safety and environmental protection has been anaerobic tank as a confined space, increase the supervision of confined space, while anaerobic bacteria can produce biogas, high concentration of biogas can increase the probability of accidents, increase online dissolved oxygen meter, combustible gas detector and other detection equipment, through the tail gas absorption pipe, emergency pressure relief port with high-power fan to send the tail gas to the incinerator for treatment, can be real-time supervision, facilitate the company to carry out automatic DCS production operation, reduce the probability of accidents.

[0025] 3、At present, the anaerobic tank needs artificial to patrol, and a series of detection equipment is added on the anaerobic tank, a series of data such as online pH meter, online thermometer, online dissolved oxygen meter, online salinity meter, online COD detector and other data are connected in series, and the data such as tank pressure, temperature, pH, dissolved oxygen, salinity and COD are in the best process requirement range, so as to ensure that the anaerobic bacteria can be in the best state of treating wastewater, and a series of automatic DCS operation can be carried out.

[0026] 4、Due to the large production of phenolic resin, the wastewater is large, and the company factory area is small, the anaerobic tank is large in volume and high in height, the size of the three-phase separator in the anaerobic tank is large, which is not conducive to maintenance, the three-phase separator is connected outside, which is small in size and convenient for maintenance. At the same time, when the anaerobic tank needs to be repaired, the three-phase separation tank can be used temporarily, which can also save the company from installing another anaerobic tank, realizing one tank with multiple uses of three-phase separation tank.

[0027] 5、Anaerobic tank and three-phase separation tank increase 3 person holes which can guarantee the oxygen concentration in the confined space, facilitate the personnel to enter the neutralization tank for cleaning sludge, increase the top maintenance cover plate opening, which is beneficial to use the crane to lift out the equipment and sludge in the tank. BRIEF DESCRIPTION OF DRAWINGS

[0028] Fig. 1 It is a front view structural schematic diagram of the embodiment anaerobic tank.

[0029] Fig. 2 It is a top view structural schematic diagram of the embodiment anaerobic tank.

[0030] Fig. 3 It is a front view structural schematic diagram of the embodiment three-phase separation tank.

[0031] Fig. 4 It is a top view structural schematic diagram of the embodiment three-phase separation tank.

[0032] In the figure:

[0033] 1, anaerobic tank; 2, three-phase separation tank; 3, reinforcing rib one; 4, reinforcing rib two; 5, three-phase separator; 6, baffle; 7, gas chamber; 8, gas port; 9, lug; 10, support frame; A1, maintenance cover one; A2, maintenance cover two; B, anaerobic water outlet; C, anaerobic water inlet; D, circulating outlet; E1, online pressure detector port one; E2, online pressure detector port two; F1, pressure gauge port one; F2, pressure gauge port two; G, circulating inlet; H1, emergency pressure relief port one; H2, emergency pressure relief port two; I1, top manhole port one; I2-I3, side manhole port one; I4-I5, side manhole port two; I6, top manhole port two; J, blowdown port; K1, combustible gas detector port one; K2, combustible gas detector port two; M1, tail gas absorption tube port one; M2, tail gas absorption tube port two; L1, ultrasonic level gauge one; L2, ultrasonic level gauge two; S1, sight glass port one; S2, sight glass port two; X1, defoaming agent port one; X2, defoaming agent port two; T1, online thermometer one; T2, online thermometer two; PH, online pH meter; Y, online salinity meter; R1-R2, online dissolved oxygen meter one; R3, online dissolved oxygen meter two; O1-O2, online COD detector one; O3, online COD detector two; Z1, spare multifunctional port one; Z2, spare multifunctional port two; N1, N3, circulating water outlet; N2, N4, circulating water inlet; N5, water inlet two; N6, water outlet two; N7, backflow outlet; N8, sludge backflow port; N9, sludge discharge port; N10, sludge sampling port; N11, nitrogen inlet two; N21-N36, compressed nitrogen inlet. DETAILED DESCRIPTION

[0034] The utility model will be further explained in connection with the drawings and specific embodiments. It should be understood that these embodiments are only used for illustrating the utility model and are not used for limiting the scope of the utility model.

[0035] Reference Figs. 1 to 4 An anaerobic device for phenolic resin wastewater treatment comprises an anaerobic tank 1, and the anaerobic tank 1 is connected with a three-phase separation tank 2.

[0036] A detachable maintenance cover one A1 is arranged at the center of the top surface of the anaerobic tank 1. The pressure gauge port one F1, the sight glass port one S1, the ultrasonic level gauge port one L1 and the combustible gas detector port one K1 are uniformly arranged at the position 3000 mm away from the center of the top surface of the anaerobic tank 1. The top manhole port one I1, the tail gas absorption tube port one M1, the emergency pressure relief port one H1, the online pressure detector port one E1, the multifunctional port one Z1 and the defoaming agent port one X1 are arranged at the position 5000 mm away from the center of the top surface of the anaerobic tank 1.

[0037] The anaerobic tank 1 is provided with a reinforcing rib 3 at the top end, an anaerobic water outlet B at 1000mm from the top end, a circulating outlet D at 3500mm from the top end, an online COD detector O2 at 3500mm from the top end, an online dissolved oxygen meter R2 at 4200mm from the top end, and an online salinity meter Y at 4200mm from the top end.

[0038] The anaerobic tank 1 is provided with a blowdown outlet J at 150mm from the bottom end, an anaerobic water inlet C at 700mm from the bottom end, two oppositely arranged side manholes I2 and I3 at 800mm from the bottom end, a circulating inlet G at 1200mm from the bottom end, 16 compressed nitrogen inlets N21-N36 evenly arranged circumferentially at 1000mm from the bottom end, an online pH meter PH and an online thermometer T1 at 2500mm from the bottom end, an online dissolved oxygen meter R1 and an online COD detector O1 at 3000mm from the bottom end.

[0039] The anaerobic tank 1 is provided with two sets of independently controlled temperature control inner coils on the inner side, one set of which is entered by cooling water from the circulating water inlet N2 at 5000mm from the bottom end of the anaerobic tank 1, and the cooling water is discharged from the circulating water outlet N1 at 5000mm from the top end; the other set is entered by cooling water from the circulating water inlet N4 at 5000mm from the bottom end of the anaerobic tank 1, and the cooling water is discharged from the circulating water outlet N3 at 5000mm from the top end.

[0040] The circulating outlet D and the blowdown outlet J of the anaerobic tank 1 are used for the inlet of the filter press tank, and the circulating inlet G is used for the outlet of the filter press tank after filtration.

[0041] The three-phase separation tank 2 is provided with a detachable maintenance cover plate A2 at the center of the top surface. The three-phase separation tank 2 is provided with an emergency pressure relief outlet H2, a tail gas absorption pipe outlet M2, and a top manhole I6 at 1000mm from the center of the top surface. The three-phase separation tank 2 is provided with an online pressure detector outlet E2, a pressure gauge outlet F2, an ultrasonic liquid level meter outlet L2, a sight glass outlet S2, a multifunctional outlet Z2, a defoaming agent outlet X2, and a combustible gas detector outlet K2 at 1500mm from the center of the top surface.

[0042] The three-phase separation tank 2 is provided with a water outlet N6 near the top end on the side, a backflow outlet N7, an online dissolved oxygen meter R3, an online COD detector O3, an online thermometer T2, and two oppositely arranged side manholes I4 and I5 on the side.

[0043] The three-phase separation tank 2 is provided with a water inlet N5, a nitrogen inlet N11, a sludge backflow outlet N8, a sludge discharge outlet N9, and a sludge sampling outlet N10 at the bottom.

[0044] The reflux outlet N7, the sludge discharge port N9 of the three-phase separation tank 2 are used for the inlets of the external filter-press tank, and the sludge reflux port N8 is used for the outlet of the waste water after pressure filtration of the external filter-press tank.

[0045] The three-phase separator 5 is arranged in the three-phase separation tank 2. The three-phase separator is arranged above the reflux outlet N7. The three-phase separator 5 comprises a baffle 6, an air chamber 7 and an air port 8, wherein the air port 8 is communicated with the air chamber 7, and the baffle 6 is used for at least blocking the retained sludge. The water, sludge and tail gas in the three-phase separation tank 2 pass through the baffle 6, are separated, the tail gas enters the air chamber 7, is discharged to the top of the tank through the air port 8, the liquid overflows from the air chamber 7 to the water outlet two N6 after being separated from the sludge through the baffle 6, and is discharged to the aerobic tank. The solid passes through the baffle 6, the sludge flocculates, the particles gradually increase, and the sludge slowly settles to the bottom of the tank along the inclined wall of the baffle 6 under the action of gravity. A large amount of anaerobic sludge is retained in the bottom of the anaerobic tank 1, and the sludge with good sedimentation and coagulation performance forms a sludge layer in the lower part. The sewage to be treated enters the anaerobic sludge layer from the anaerobic water inlet C and is mixed with the sludge in the sludge layer, the microorganisms in the sludge decompose the organic matter in the sewage, and the organic matter is converted into biogas. In the upper part of the sludge bed, a sludge with a relatively thin sludge concentration and water rises into the upper part of the anaerobic tank 1 due to the stirring of the biogas, the biogas is continuously discharged in the form of small bubbles, the small bubbles continuously combine during the rising process, gradually form larger bubbles, and are taken to the incinerator by the negative pressure at the tail gas suction port one M1 to be burned, so that the tail gas is treated. Part of the anaerobic sludge in the anaerobic tank 1 settles to the inside of the anaerobic tank 1 under the action of gravity, and the other anaerobic sludge, water and small biogas are discharged from the anaerobic water outlet B, enter the water inlet two N5 of the three-phase separation tank 2 through the pipeline, and are subjected to solid-liquid-gas separation in the three-phase separation tank 2. In the three-phase separation tank 2, when the biogas encounters the baffle 6 at the lower part of the three-phase separator 5, the biogas is folded to the periphery of the baffle 6, then passes through the water layer to enter the air chamber 7, is concentrated in the air chamber 7, is guided out through the air port 8, the solid-liquid mixture enters the bottom of the three-phase separator 5 after reflection, the sludge in the sewage flocculates, the particles gradually increase, and the sludge settles to the bottom of the tank under the action of gravity. The separated sewage is discharged from the three-phase separation tank 2 through the water outlet two N6, the solid sludge slides back into the tank along the inclined wall, and the sludge is discharged to the external filter-press tank through the sludge discharge port N9 at the bottom for pressure filtration.

[0046] The three-phase separation tank 2 is provided with a reinforcing rib two 4 at the top end, and is provided with an ear seat 9 at the top of the four sides of the side surface, and is provided with a support frame 10 at the bottom.

[0047] The anaerobic water outlet B of the anaerobic tank 1 is connected with the water inlet two N5 of the three-phase separation tank 2.

[0048] Through the design of the blow-off port J and the sludge discharge port N9, the sludge and the wastewater can be pumped into the pressure filter tank through the blow-off port J and the sludge discharge port N9 for pressure filtration of the sludge, and the wastewater after pressure filtration can be returned to the anaerobic tank 1 and the three-phase separation tank 2 respectively through the circulating inlet G and the sludge backflow port N8, so that the amount of the sludge in the tank is reduced, the amount of the sludge deposition in the tank is reduced, and the maintenance frequency of the tank is reduced. When the salt content, pH value and COD value in the tank exceed the process range, the wastewater can be sent to the pressure filter tank through the circulating outlet D and the backflow outlet N7 for pressure filtration, and the wastewater after pressure filtration can be sent to the anaerobic treatment for re-treatment of the wastewater.

[0049] In use, the anaerobic tank 1 and the three-phase separation tank 2 for treatment of the phenolic resin wastewater in the embodiment can be stirred uniformly by introducing compressed nitrogen gas through the compressed nitrogen gas inlets N21-N36 and the nitrogen gas inlet two N11, and the biogas in the tank can be replaced by nitrogen gas before maintenance, so that the manhole can be disassembled, and the maintenance can be performed after the air in the tank reaches the standard.

[0050] The pipeline connected to the anaerobic water inlet C of the anaerobic tank 1 can be provided with a flow meter and an online COD detector, so that the amount and the COD value of the wastewater can be counted and a DCS map can be formed, the treated wastewater can be discharged through the anaerobic water outlet B to the water inlet two N5, and then can be introduced into the three-phase separation tank 2 for treatment, and finally can be discharged from the water outlet two N6 of the three-phase separation tank 2 to the aerobic tank. According to the process, a series of data such as the online pH meter PH, the online thermometer, the online dissolved oxygen meter, the online salinity meter Y and the online COD detector in the anaerobic tank 1 and the three-phase separation tank 2 can be connected to each other, so that the data such as the pressure, the temperature, the pH, the dissolved oxygen content, the salinity and the COD in the tank can be in the best process requirement range, the anaerobic bacteria can be in the best state for treatment of the wastewater, and a series of automatic DCS operations can be performed.

[0051] The same detection instruments as those in the anaerobic tank 1 are installed in the three-phase separation tank 2, so that the three-phase separation tank 2 can temporarily replace the anaerobic tank 1 to work when the anaerobic tank 1 is maintained, and the temporary one-tank multi-use of the three-phase separation tank 2 can be realized.

[0052] The top of the anaerobic tank 1 and the three-phase separation tank 2 is provided with an online pressure detection meter port, a pressure gauge port, a tail gas absorption pipe port and an emergency pressure relief port. The tail gas absorption pipe port is always opened to allow the biogas in the tank to be absorbed by the tail gas tower, so as to reduce the safety risk in the tank. At the same time, the pressure of the online pressure detection meter is connected, and when the pressure is positive, the emergency pressure relief port is opened, the pressure in the tank is changed to negative, the pressure in the tank is released, and the safety risk in the tank is reduced. The last measure is the nitrogen port, which can fill nitrogen into the tank to reduce the concentration of oxygen and biogas.

[0053] Anaerobic tank 1 and three-phase separation tank 2 have two-way side manholes and top manholes. The manholes are added for entering the limited space tank, and the extra manholes are convenient for ventilation by using a blower to increase the oxygen content in the limited space and facilitate maintenance.

[0054] Anaerobic tank 1 and three-phase separation tank 2 are provided with removable maintenance cover plates, so that during maintenance, the maintenance equipment and generated sludge in the tank can be lifted out of the tank by a crane without disassembling the entire tank top.

[0055] In addition, it should be understood that, after reading the above description of the present application, those skilled in the art can make various modifications or modifications to the present application, and these equivalent forms also fall within the scope defined by the claims attached hereto.

Claims

1. An anaerobic apparatus for phenol-aldehyde resin wastewater treatment, characterized by comprising: It comprises an anaerobic tank (1) and a three-phase separation tank (2) connected to the anaerobic tank (1); The anaerobic tank (1) is provided with a detachable maintenance cover plate (A1) at the center of the top surface, and a combustible gas detection port (K1) is arranged outside the maintenance cover plate (A1); an anaerobic water outlet (B) is arranged near the top end of the side surface of the anaerobic tank (1); and an anaerobic water inlet (C) is arranged near the bottom end of the side surface of the anaerobic tank (1); The three-phase separation tank (2) is provided with a detachable maintenance cover plate (A2) at the center of the top surface, and a combustible gas detection port (K2) is arranged outside the maintenance cover plate (A2); a water outlet (N6) is arranged near the top end of the side surface of the three-phase separation tank (2); and a water inlet (N5) is arranged at the bottom of the three-phase separation tank (2); The anaerobic water outlet (B) is connected to the water inlet (N5).

2. The anaerobic apparatus for phenol resin wastewater treatment according to claim 1, wherein A plurality of compressed nitrogen inlets are arranged near the bottom end of the side surface of the anaerobic tank (1) in a circumferential direction. The three-phase separation tank (2) is provided with a nitrogen inlet (N11) at the bottom.

3. The anaerobic apparatus for phenol resin wastewater treatment according to claim 1, wherein The anaerobic tank (1) is provided with a top manhole (I1), a tail gas absorption pipe (M1), an emergency pressure relief port (H1), an online pressure detection port (E1), a pressure gauge port (F1), an ultrasonic liquid level meter port (L1), a sight glass port (S1), a multifunctional port (Z1), and a defoaming agent port (X1) at the top surface outside the maintenance cover plate (A1); The three-phase separation tank (2) is provided with a top manhole (I6), a tail gas absorption pipe (M2), an emergency pressure relief port (H2), an online pressure detection port (E2), a pressure gauge port (F2), an ultrasonic liquid level meter port (L2), a sight glass port (S2), a multifunctional port (Z2), and a defoaming agent port (X2) at the top surface outside the maintenance cover plate (A2).

4. The anaerobic apparatus for phenol resin wastewater treatment according to claim 1, wherein The anaerobic tank (1) is provided with a circulating outlet (D) near the top end of the side surface, a blowdown port (J), and a circulating inlet (G) near the bottom end of the side surface; the circulating outlet (D) and the blowdown port (J) are connected to the inlet of a pressure filter tank; and the circulating inlet (G) is connected to the wastewater outlet of the pressure filter tank after pressure filtration. The three-phase separation tank (2) is provided with a backflow outlet (N7) near the top end of the side surface, a sludge backflow port (N8), and a sludge discharge port (N9) at the bottom; the backflow outlet (N7) and the sludge discharge port (N9) are connected to the inlet of a pressure filter tank; and the sludge backflow port (N8) is connected to the wastewater outlet of the pressure filter tank after pressure filtration.

5. The anaerobic apparatus for phenol resin wastewater treatment according to claim 1, wherein The anaerobic tank (1) is provided with a reinforcing rib (3) at the top end, an online dissolved oxygen meter, an online COD detector, an online thermometer (T1), an online pH meter (PH), an online salinity meter (Y), and two oppositely arranged side manholes; The three-phase separation tank (2) is provided with an online dissolved oxygen meter (R3), an online COD detector (O3), an online thermometer (T2), and two oppositely arranged side manholes; and the three-phase separation tank (2) is provided with a sludge sampling port (N10) at the bottom.

6. The anaerobic apparatus for phenol resin wastewater treatment according to claim 5, wherein The online dissolved oxygen meter has a plurality of online dissolved oxygen meters arranged at different heights on the side surface of the anaerobic tank (1).

7. The anaerobic apparatus for phenol resin wastewater treatment according to claim 5, wherein The online COD detector has a plurality of online COD detectors arranged at different heights on the side surface of the anaerobic tank (1).

8. The anaerobic apparatus for phenol resin wastewater treatment according to claim 1, wherein Anaerobic tank (1) is provided with one or more sets of independently controlled temperature control inner coil; the temperature control inner coil is lower inlet and upper outlet, wherein the inlet is connected with cold water or steam water.

9. The anaerobic apparatus for phenol resin wastewater treatment according to claim 1, wherein The three-phase separation tank (2) is provided with a three-phase separator (5); the three-phase separator (5) comprises a baffle (6), an air chamber (7) and an air port (8), wherein the air port (8) is communicated with the air chamber (7), and the baffle (6) is used for at least blocking and retaining sludge.

10. The anaerobic apparatus for phenol resin wastewater treatment according to claim 1, characterized by The three-phase separation tank (2) is provided with a reinforcing rib two (4) at the top end, an ear seat (9) is arranged at the top of the side surface of the three-phase separation tank (2), and a support frame (10) is arranged at the bottom of the three-phase separation tank (2).

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