CN214270590U - Difficult degradation high concentration waste water integrated processing system - Google Patents
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Abstract
The utility model relates to the field of wastewater treatment systems, in particular to a degradation-resistant high-concentration wastewater comprehensive treatment system. According to the flow direction of wastewater treatment, the system comprises a pretreatment section, a front multi-phase catalytic oxidation integrated device, a high-concentration wastewater integrated biochemical treatment device and a rear multi-phase catalytic oxidation integrated device. According to the utility model discloses a heterogeneous catalytic oxidation integration equipment before effluent disposal system utilizes ozone, hydrogen peroxide solution, iron carbon filler synergism, lasts uninterruptedly and produces the hydroxyl free radical, and the difficult biodegradable organic matter of degradation is showing and is improving oxidation efficiency.
Description
Technical Field
The utility model relates to the field of wastewater treatment systems, in particular to a degradation-resistant high-concentration wastewater comprehensive treatment system.
Background
The quality of industrial wastewater is characterized in that the components of wastewater pollution are complex, the concentrations of COD, oils and salts are high, and the biodegradability is poor, and multiple process combinations such as physical separation, chemical treatment, biological treatment and the like are generally adopted to treat multi-component pollutants so as to convert the multi-component pollutants into harmless substances for discharge.
The problems of most of the currently used wastewater treatment systems are that: 1) the advanced oxidation unit is arranged at the front end of the biochemical unit, and macromolecular organic matters which are difficult to biodegrade are decomposed into micromolecular organic matters which are easy to degrade, so that the biodegradability of the wastewater is improved, but the efficiency of generating hydroxyl radicals at the advanced oxidation section is low, and the treatment effect of the subsequent biochemical unit is directly influenced; 2) the monomer treatment unit usually needs additional feeding to assist in removing pollutants, but internal products can cause secondary pollution, and the difficulty and cost of subsequent treatment are increased; 3) the treatment system has limited removal capacity for COD, ammonia nitrogen, total nitrogen and total phosphorus and can not reach the effluent standard.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel intelligent integrated processing system of difficult degradation high concentration waste water to solve the problem of proposing in the above-mentioned background art.
According to the utility model discloses a difficult degradation high concentration waste water integrated processing system, according to the waste water treatment flow direction, including preliminary treatment section, preceding heterogeneous catalytic oxidation integration equipment, high concentration waste water integration biochemical treatment device, back heterogeneous catalytic oxidation integration equipment, install gas distribution system and catalytic filler in the catalytic oxidation reaction tower of preceding heterogeneous catalytic oxidation integration equipment, ozone gas gets into from the reaction tower bottom through gas distribution system, when letting in ozone gas, still need to let in hydrogen peroxide solution as the oxidant, the catalytic filler that loads in this tower is the iron carbon filler, and wherein, ozone input is 0.1 ~ 10mg/mg COD waste water, and hydrogen peroxide solution input is 1 ~ 50mg/mg COD, and the interpolation mass ratio of ozone, hydrogen peroxide solution and iron carbon filler is 1:2:2 ~ 4:2: 3.
According to the utility model discloses a difficult degradation high concentration waste water integrated processing system, wherein in high concentration waste water integration biochemical treatment device's the regulation contact pond of hydrolysising, the installation dive agitator.
According to the utility model discloses a difficult degradation high concentration waste water integrated processing system, wherein, the baffling board is installed perpendicularly in high concentration waste water integration ability biochemical treatment device's heterogeneous anaerobism baffling contact reaction pond, divide into the cell body and divide into the compartment structure that divides into more.
According to the utility model discloses a difficult degradation high concentration waste water integrated treatment system, wherein, install good oxygen type filler and aeration systems in the pond of high concentration waste water integration biochemical treatment device's biological contact oxidation pond.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the coupling of the former multi-phase catalytic oxidation integrated equipment, the high-concentration wastewater integrated biochemical treatment device and the latter multi-phase catalytic oxidation integrated equipment cooperatively treats the high-concentration industrial wastewater which is difficult to degrade, and realizes the high-efficiency removal of multi-component pollutants.
2. The former multi-phase catalytic oxidation integrated equipment continuously generates hydroxyl radicals by utilizing the synergistic effect of ozone, hydrogen peroxide and iron-carbon filler, degrades organic matters which are difficult to biodegrade, and obviously improves the oxidation efficiency.
3. The carbon powder dropped from the former multi-phase catalytic oxidation integrated equipment becomes a biological carrier of a subsequent biochemical unit, thereby realizing the recycling of the carbon powder, not only enhancing the biochemical treatment effect, but also reducing the treatment to solid wastes.
4. The integrated biochemical treatment device for the high-concentration wastewater comprises three biochemical methods of anoxic, anaerobic and aerobic and a membrane treatment method, and different special biological fillers are filled, so that a sludge-membrane symbiotic microbial environment and a sludge system with multiple sludge ages are formed in a biochemical system, and partial anaerobic ammonia oxidation denitrification is realized.
5. The integrated biochemical treatment device for high-concentration wastewater combines a novel micropore aeration technology and a membrane bioreactor technology, and improves the oxygen utilization rate and the water flux.
6. The high-concentration wastewater integrated biochemical treatment device is integrated into the fluid dynamics principle of a chemical reactor, optimizes the hydraulic flow state, improves the biochemical treatment capacity of the device, remarkably improves the removal rate of COD (chemical oxygen demand), total nitrogen and total phosphorus, and has low sludge production rate and stable effluent quality.
7. The effluent of the post-multiphase catalytic oxidation equipment flows back to the adjusting hydrolysis contact tank, so that the impact load resistance of the biochemical unit can be improved, and the concentration of the influent pollutants can be diluted; meanwhile, the fallen carbon powder is also brought into a biochemical unit to be used as a biological carrier.
8. The utility model discloses a difficult degradation high concentration waste water integrated processing system has that the clearance is high, the treatment effeciency is high, goes out water stable in quality of water, mud output is few, the area is little, system's integrated level advantage such as high.
Drawings
FIG. 1 is a schematic structural diagram of a novel intelligent comprehensive treatment system for refractory high-concentration wastewater.
FIG. 2 shows the mass ratio of the added ozone, hydrogen peroxide and iron-carbon filler to COD and NH of wastewater4-removal effect of N.
FIG. 3 shows the mass ratio of the added ozone, hydrogen peroxide and iron-carbon filler to the added COD and NH of wastewater4-removal effect of N.
Reference numerals: 1-pretreatment section, 2-front multi-phase catalytic oxidation integrated equipment, 3-high concentration wastewater integrated biochemical treatment device and 4-rear multi-phase catalytic oxidation integrated equipment
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the practical application, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the scope of the present invention.
As shown in 1, according to the utility model discloses a difficult degradation high concentration waste water integrated processing system, according to the waste water treatment flow direction, including pretreatment section 1, preceding heterogeneous catalytic oxidation integration equipment 2, high concentration waste water integration biochemical treatment device 3, back heterogeneous catalytic oxidation integration equipment 4.
The former heterogeneous catalytic oxidation integration equipment sets up before high concentration waste water integration biochemical treatment device, install gas distribution system and catalytic filler in the catalytic oxidation reaction tower of preceding heterogeneous catalytic oxidation integration equipment, ozone gas gets into from the reaction tower bottom through the gas distribution system, and after fully mixing with the reactor water, passes through the filler district jointly, in the reaction tower, each component interact forms the hydroxyl free radical, improves the oxidation effect. Furthermore, when ozone gas is introduced into the catalytic oxidation reaction tower, hydrogen peroxide is required to be introduced as an oxidant, and the catalytic filler filled in the tower is an iron-carbon filler.
The technical effects obtained by the multiphase catalytic oxidation integrated equipment before the setting are as follows: (1) at the initial stage of operation of the catalytic oxidation reaction tower, the tower is in a neutral or alkaline environment, ozone and hydrogen peroxide play a role in generating hydroxyl radicals, and the iron-carbon filler plays a role in catalysis and adsorption; (2) after excessive hydrogen peroxide is introduced, the tower is in an acid environment, and the iron-carbon filler and the electrolyte solution form a primary battery to perform electrolysis to generate hydroxyl radicals; (3) fe in solution as the electrolysis proceeds2+The hydrogen peroxide and the hydrogen peroxide solution form a reagent with extremely strong oxidizing capability again to generate more hydroxyl radicals; (4) hydroxyl free radicals are continuously generated in the catalytic oxidation tower, macromolecular organic matters which are difficult to biodegrade are oxidized, and the treatment efficiency is improved; (5) the carbon powder falling off from the catalytic oxidation tower flows into a subsequent biochemical unit along with water flow to become a biological carrier, so that the concentration of activated sludge is improved, the sludge age is prolonged, a certain adsorption function is realized, and the removal rate of organic matters, ammonia nitrogen, total nitrogen and total phosphorus is greatly improved.
The amount of ozone introduced into the catalytic oxidation reaction tower is 0.1-10 mg/mg of COD wastewater, the adding amount of hydrogen peroxide is 1-50 mg/mg of COD, and the adding mass ratio of the ozone to the hydrogen peroxide to the iron-carbon filler is 1:2: 2-4: 2: 3.
At the initial stage of the reaction, the initial pH is controlled to be more than or equal to 7, and OH is carried out under the condition-The iron-carbon filler has strong adsorption effect on organic matters and strong promotion effect on catalytic oxidation of ozone. TheIn the reaction system, O3The optimal adding mass ratio of the iron-carbon filler to hydrogen peroxide is 1: 1-2: 1, the iron-carbon filler is used as a catalyst, the consumption problem does not exist, and in the process, the excessively low adding mass ratio can reduce O3The pH value of the solution is always acidic due to the excessively high adding mass ratio, and the subsequent reaction is influenced.
With O3After the decomposition is finished, continuously introduced hydrogen peroxide and organic matters which are difficult to degrade are oxidized and decomposed into micromolecular organic acids, so that the interior of the system is in an acid environment, the iron-carbon filler and the electrolyte solution form a primary battery, and hydroxyl radicals generated by electrolysis are continuously oxidized and decomposed into organic pollutants. In addition, as the reaction proceeds without interruption, Fe is generated at the anode of the battery2+And the catalyst and hydrogen peroxide solution form a reagent with extremely strong oxidizing capability again, so that hydroxyl radicals are continuously generated in the whole reaction system, and the catalytic oxidation performance is obviously improved. And in the later reaction period, the optimal adding mass ratio of the hydrogen peroxide to the iron-carbon filler is 1: 2-1: 3. In this process, too low a mass ratio of addition reduces Fe2+An excessively high addition mass ratio results in an excess of Fe2+The catalyst has a masking effect on hydroxyl free radicals and reduces the efficiency of catalytic oxidation reaction.
In the former multi-phase catalytic oxidation system, the biodegradability index of the wastewater is in positive correlation with the adding amount of ozone, hydrogen peroxide and iron carbon filler, the effect tends to be stable after the adding mass ratio is 1:2: 2-4: 2:3, and the adding mass ratio is 1:2: 2-4: 2:3 and is a critical ratio.
Furthermore, a submersible stirrer is arranged in an adjusting hydrolysis contact pool of the high-concentration wastewater integrated biochemical treatment device to accelerate the process that insoluble organic matters are hydrolyzed into soluble organic matters by hydrolytic bacteria and acidifying bacteria, and the retention time in the adjusting hydrolysis contact pool is 4-24 h.
Baffle plates are vertically arranged in a multiphase anaerobic baffling contact reaction tank of the high-concentration wastewater integrated energy biochemical treatment device, and a tank body is divided into a multi-compartment structure, so that a staged multiphase anaerobic process is formed. The wastewater is baffled up and down in the tank body along the baffle plates, and the baffle plates divide the internal structure of the tank body into an upper partThe upward flow chamber and the downward flow chamber are designed into a structural form that the upward flow chamber is widened and the downward flow chamber is narrowed. The lower part of the baffle plate is provided with a 45-degree guide plate. Anaerobic special biological fillers are selected in the compartments, a special and stable growth environment is provided for anaerobic microorganisms, and the microorganisms are rapidly propagated in the fillers. The anaerobic special biological filler is a suspended filler, and the specific surface area of the suspended filler is 380-800 m3/m2The filling rate of the filler is 6-15% (calculated by the stacking volume), the filling rate of the filler is 60-80% (calculated by the filling volume), and the volume load is 0.8-3 kgBOD/m3A filler d.
For example, the multiphase anaerobic baffling contact reaction tank of the high-concentration wastewater integrated biochemical treatment device is designed into 4 compartments, but not limited to 4 compartments, and the multiphase anaerobic baffling contact reaction tank is specifically designed according to the specific situation of the COD index of the inlet water.
An aerobic filler and an aeration system are arranged in a biological contact oxidation tank of the high-concentration wastewater integrated biochemical treatment device, the aerobic special biological filler is a suspended filler, and the specific surface area of the filler is 250-260 m3/m2The filling rate of the filler is 4-15% (calculated by the stacking volume), the filling rate of the filler is 40-80% (calculated by the filling volume), and the volume load is 0.4-2.0 kgBOD/m3Filler d, 0.5-1.0 kg TKN/m3D, filling, wherein the aeration system comprises a disc type aeration head, aeration branch pipes, an aeration main pipe and an aeration fan, and dissolved oxygen is controlled to be 2-4mg/L in the tank.
The biological contact oxidation tank of the high-concentration wastewater integrated biochemical treatment device is designed into a multistage series working mode, and can realize the random switching in an anoxic working mode or an aerobic working mode by controlling the oxygen supply amount of the aeration fan.
When the biological contact oxidation tank of the high-concentration wastewater integrated biochemical treatment device is in an anoxic tank, an anoxic filler and an aeration system are installed in the tank, the anoxic special biological filler is a suspended filler, and the specific surface area of the filler is 300-500 m3/m2The filling rate of the filler is 5-15% (calculated by the bulk volume), the filling rate of the filler is 50-80% (calculated by the bulk volume), and the volume load is 0.5-2.0 kgBOD/m3Filler d, aeration system comprising disc aeration head, aeration branchThe pipe, the aeration main pipe and the aeration fan; the dissolved oxygen in the pool is controlled to be 0.3-0.8 mg/L.
A membrane module and an aeration system are arranged in a micro-aeration MBR tank of the high-concentration wastewater integrated biochemical treatment device. When the mud yield of the front-end system is large, the membrane component is a membrane with a lining, the strength is high, the pore diameter distribution is wide, the pores are large, and the membrane can resist cleaning; when the mud yield of the front-end system is small, the membrane component is a membrane with small strength, narrow pore size distribution and small pores; the aeration system comprises a microporous aerator, aeration branch pipes, an aeration main pipe and an aeration fan.
The back heterogeneous catalytic oxidation integration equipment sets up in high concentration waste water integration biochemical treatment device's rear end to go out water reflux to adjust in the contact tank of hydrolysising, the technological effect that heterogeneous catalytic oxidation integration was established after setting up is: (1) macromolecular organic matters which cannot be degraded by renewable substances can be further oxidized into micromolecular organic matters which are then removed under the action of microorganisms; (2) the concentration of the pollutants entering the biochemical reaction system is diluted by the backflow of the wastewater, so that the impact of the high-concentration pollutants on microorganisms is reduced, and the removal effect is improved; (3) the carbon powder dropped off by the later multi-phase catalytic oxidation integrated equipment can enter a biochemical system to become an effective microorganism carrier.
The utility model discloses a difficult degradation high concentration waste water integrated processing system purifies waste water's principle does: the wastewater firstly passes through a pretreatment section, and flows to the former multi-phase catalysis integrated equipment after removing large suspended substances, grease, salt and other pollutants by a physical method; in the heterogeneous catalytic oxidation integrated equipment, through the synergistic effect of ozone, hydrogen peroxide and iron-carbon filler, macromolecular organic matters which are difficult to biodegrade are decomposed into micromolecular organic matters which are easy to be biodegraded, the biodegradability of waste water is improved, and the fallen carbon powder is discharged to a subsequent biochemical unit along with the oxidized waste water; wastewater flowing to the high-concentration wastewater integrated biochemical treatment device sequentially passes through the adjusting hydrolysis tank, the multiphase anaerobic baffling contact reaction tank, the biological contact oxidation tank and the micro-aeration MBR tank, and forms a sludge membrane symbiotic microbial environment and a sludge system with multiple sludge ages in the biochemical system under the action of carbon powder and fillers, so that pollutants such as COD (chemical oxygen demand), TN (total nitrogen) and the like are efficiently removed; the biochemical effluent is discharged to a post-multiphase catalytic oxidation integrated device, in the device, macromolecular organic matters which are subjected to biochemical treatment and can not be degraded by renewable organisms are further oxidized into micromolecular organic matters, then the micromolecular organic matters flow back to a regulating hydrolysis tank to be removed under the action of microorganisms, and carbon powder falling off in the device also flows back to a biochemical unit to become a biological carrier for use.
The present invention is further explained below by way of actual engineering case data.
Example 1
In this example, the amount of wastewater discharged by a pharmaceutical intermediate manufacturing enterprise in Hebei is 200m3And d. The wastewater mainly comprises wastewater generated in the production process of a drug intermediate, workshop spray wastewater, domestic wastewater and the like, and has high CODcr value (COD is less than or equal to 15000mg/L) and high ammonia nitrogen content (NH)4-N≤1000mg/L)。
And (4) water outlet standard: COD < 150mg/L, NH4-N＜20mg/L。
The wastewater is treated by adopting a regulating tank, coagulating sedimentation, ammonia nitrogen stripping, pre-multiphase catalytic oxidation, high-concentration wastewater integrated intelligent biochemical treatment and post-multiphase catalytic oxidation, wherein the mass ratio of ozone, hydrogen peroxide and iron-carbon filler is as follows: 1:2:2. The quality and removal rate of the feed water to each stage are shown in Table 1 below.
TABLE 1
Example 2
The results of comparison of the oxidation effects of ozone oxidation, ozone + hydrogen peroxide, and ozone + hydrogen peroxide + iron carbon filler are shown in table 2 below.
TABLE 2 advanced Oxidation Effect comparison Table
As can be seen from Table 2, the same raw water (COD:1000mg/L, B/C:0.15) was tested in O3、O3+H2O2、O3+H2O2+ high oxidation effect of iron-carbon filler in different systems. Wherein, the control of the adding amount of ozone (2mg/mgCOD), the adding amount of hydrogen peroxide (5mg/mgCOD) and the reaction time (60min) are the same, and the result shows that the advanced oxidation effect is as follows: o is3+H2O2+ iron-carbon filler (B/C:0.61)>O3+H2O2(B/C:0.45)>O3(B/C:0.31)。
The results of comparison of the treatment effects of the biochemical units are shown in Table 3, in which the biochemical influent water corresponds to the 3 types of advanced oxidation effluent water in Table 2.
TABLE 3 comparison table of biochemical effect
As can be seen from Table 3, the same raw water (COD:1000mg/L, B/C:0.15) was tested in O3、O3+H2O2、O3+H2O2The effect of the advanced oxidation under different systems of the iron-carbon filler and the effect of the corresponding advanced oxidation unit on the subsequent biochemical unit. Wherein the ozone dosage (2mg/mgCOD), the hydrogen peroxide dosage (5mg/mgCOD), the reaction time (60min) and the biochemical unit setting (high-concentration wastewater integrated biochemical treatment device) are controlled to be the same; the results show that: advanced oxidation effect: o is3+H2O2+ iron-carbon filler (B/C:0.61)>O3+H2O2(B/C:0.45)>O3(B/C:0.31), Biochemical treatment Effect: o is3+H2O2+ iron-carbon filler + high concentration wastewater integrated biochemical treatment device (wherein, the fallen carbon powder is used as biological carrier, strengthening carrier system, COD removal rate is 80%, NH4-The N removal rate: 75%)>O3+H2O2+ high concentration wastewater integrated biochemical treatment device (COD removal rate: 75%, NH)4-The N removal rate: 60%)>O3+ high concentration wastewater integrated biochemical treatment device (COD removal rate: 70%, NH)4-The N removal rate: 53%).
Further, the former heterogeneous catalytic oxidation + high concentration wastewater integrated biochemical treatment device + the latter heterogeneous catalytic oxidation treatment effect are shown in table 4 below.
Table 4 pollutant removing effect table of novel intelligent comprehensive treatment system for high-concentration wastewater difficult to degrade
As can be seen from Table 4, the raw water (COD:1000mg/L, B/C:0.15) was successively subjected to the former heterogeneous catalytic oxidation (O)3+H2O2Iron-carbon filler), high-concentration wastewater integrated biochemical treatment device (filler and fallen carbon powder are jointly used as biological carriers), and post-multiphase catalytic oxidation (O)3+H2O2+ iron carbon filler) the results show: the removal rate of COD of the system reaches 85 percent, and the removal rate of NH of the system4The removal rate of-N reaches 80 percent.
Example 3
In this example, the wastewater was the same drug intermediate wastewater as in example 1, and the mass ratio of ozone, hydrogen peroxide, and iron-carbon filler was changed in a laboratory bench, and the obtained experimental data are shown in table 5 below.
TABLE 5
As shown in table 5 and fig. 2, inside the catalytic oxidation system, as the mass ratio of the ozone, the hydrogen peroxide and the iron-carbon filler is increased, the comprehensive treatment efficiency of the system is also remarkably improved; when the adding mass ratio of the ozone, the hydrogen peroxide and the iron-carbon filler reaches 4:2:3, the comprehensive treatment efficiency of the system reaches the optimum; when the addition mass ratio is more than 4:2:3, the treatment effect of the system is not obviously improved; therefore, the adding mass ratio of the ozone, the hydrogen peroxide and the iron-carbon filler is 4:2:3, which is a critical ratio.
Example 4
In this example, the amount of the printing and dyeing wastewater of a certain control enterprise in Hebei river is 30000m in total3And d, the inlet water COD is 6000mg/L, and the designed outlet water COD is 150 mg/L. The wastewater is formed by mixing dyeing wastewater, printing wastewater and rinsing wastewater, and has complex components. The wastewater contains pulp, dye, auxiliary agent, surfactant, residual bleaching agent, a small amount of acetic acid, sodium thiosulfide and other substances, is strong in basicity, high in chroma and poor in biodegradability, and is treated by adopting a regulating tank, pre-heterogeneous catalytic oxidation, integrated biochemical treatment of high-concentration wastewater and post-heterogeneous catalytic oxidation. The mass ratio of the ozone, the hydrogen peroxide and the iron-carbon filler is changed in a laboratory bench test, and the obtained experimental data are shown in the following table 6
TABLE 6 COD and NH of wastewater at different mass ratios of ozone, hydrogen peroxide and iron-carbon filler4Effect of removal of-N
| Adding mass ratio of ozone, hydrogen peroxide and iron-carbon filler | COD removal Rate (%) | NH4-N removal (%) |
| 1:2:5(0.10) | 93.5 | 70.8 |
| 1:2:4(0.13) | 97.4 | 76.5 |
| 1:2:2(0.25) | 99.0 | 80 |
| 1:3:1(0.33) | 99.0 | 80.1 |
| 1:2:1(0.50) | 99.1 | 80.1 |
| 4:2:3(0.66) | 99.1 | 80.2 |
| 6:2:3(1.00) | 99.0 | 80.1 |
| 6:1:4(1.50) | 98.9 | 79.9 |
As can be seen from Table 6 and FIG. 3, the COD removal rate and NH content of the system increased with the mass ratio of ozone, hydrogen peroxide and iron-carbon filler added4The N removal rate is also obviously improved; when the adding mass ratio of the ozone, the hydrogen peroxide and the iron-carbon filler reaches 4:2:3, the comprehensive treatment efficiency of the system reaches the optimum; and when the mass ratio of the additive is more than 4:2:3, the treatment effect of the system is not obviously improved.
Claims (4)
1. The comprehensive treatment system for the high-concentration wastewater difficult to degrade is characterized by comprising a pretreatment section, a front multi-phase catalytic oxidation integrated device, a high-concentration wastewater integrated biochemical treatment device and a rear multi-phase catalytic oxidation integrated device according to the wastewater treatment flow direction, wherein an air distribution system and a catalytic filler are installed in a catalytic oxidation reaction tower of the front multi-phase catalytic oxidation integrated device, and ozone gas enters from the bottom of the reaction tower through the air distribution system.
2. The integrated treatment system for high concentration wastewater difficult to degrade according to claim 1, wherein a submersible stirrer is installed in the adjusting hydrolysis contact tank of the integrated biochemical treatment device for high concentration wastewater.
3. The integrated treatment system for high-concentration wastewater difficult to degrade according to claim 1, wherein baffle plates are vertically arranged in the multiphase anaerobic baffled contact reaction tank of the integrated biochemical treatment device for high-concentration wastewater, and divide the tank body into a multi-compartment structure.
4. The integrated treatment system for high concentration wastewater difficult to degrade according to claim 1, wherein an aerobic filler and an aeration system are installed in the tank of the biological contact oxidation tank of the integrated biochemical treatment device for high concentration wastewater.
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