CN102642989A - Recycling treatment device of high-salt reverse osmosis concentrated water - Google Patents

Abstract

The invention relates to the technical field of sewage treatment in environmental engineering, in particular to equipment for treating and reusing high-salt reverse osmosis concentrated water generated in the process of sewage regeneration. It includes the following processing units connected in sequence: regulating tank, peristaltic pump, photocatalytic oxidation reactor, biological activated carbon reactor, low-voltage carbon adsorption reactor and ultrafiltration device. The bottom of the biological activated carbon reactor is connected to an air compressor. The units are respectively connected by pipes, and water inlet pipes are set at the water inlet of the regulating pool. Its beneficial effects are: the removal efficiency of pollutants is high by using this equipment; the resource utilization of high-salt reverse osmosis concentrated water can be realized; it can be applied to the treatment of other high-salt wastewater with low organic matter concentration and difficult to biochemical; it can overcome the activated sludge method Problems such as sludge bulking and sludge floating are easy to occur in the process. It has stable operation, strong impact resistance capacity, more economical and energy-saving, and has certain nitrification and denitrification functions, which can realize closed operation and prevent odor.

Description

High-salt reverse osmosis concentrated water reuse treatment equipment

technical field

The invention relates to the technical field of sewage treatment in environmental engineering, in particular to equipment for treating and reusing high-salt reverse osmosis concentrated water generated in the process of sewage regeneration.

Background technique

As a high-efficiency, energy-saving and environmentally friendly membrane separation technology, reverse osmosis membrane (RO) is widely used in the fields of medicine, food, beverage, seawater desalination, etc. In the field of water treatment, it is mainly used for the purification, purification, Desalination of seawater and thatch brackish water and regeneration and reuse of secondary effluent from sewage plants. Since reverse osmosis technology is the finest physical separation process, in the process of preparing recycled water, concentrated water (RO concentrate) containing high concentrations of salt and dissolved organic pollutants (DOM) will be produced. Because reverse osmosis concentrated water production accounts for 1/3 to 1/5 of the total raw water, a large amount of high-salt concentrated water is discharged into the sewage plant as discarded water, which not only poses a serious threat to the normal operation of the sewage treatment plant, but also contains high The concentration of salinity will also damage the ecosystem of the receiving water body, and eventually lead to the degradation of the ecological function of the environment around the water body. Many studies have shown that the presence of high-concentration salt has a significant inhibitory effect on biological activity. When the salt content of water is above 3%, its biological treatment efficiency will decrease significantly. The superposition of high salinity and refractory characteristics makes RO concentrated water treated by conventional biochemical methods unable to meet the quality requirements or discharge standards for reused water. However, it was reported in the 1st issue of "Environmental Science" in 2000 and the 2nd issue of "Industrial Water Treatment" in 2005 that as long as the system goes through a certain period of domestication or adds halophilic bacteria or halophilic bacteria that are screened to the system, the biochemical method can also be used. Can handle high salinity wastewater.

The existing technology is mainly aimed at the treatment of high-salt and high-concentration organic wastewater, and generally adopts the improved activated sludge process, which has high organic matter removal efficiency. However, the amount of excess sludge produced by the activated sludge method is large, and sludge bulking is prone to occur. For high-salt wastewater with a relatively low concentration of organic matter, the purification efficiency is low.

Contents of the invention

The present invention aims to propose a high-salt reverse osmosis concentrated water purification and reuse treatment equipment, through the synergistic effect of the photocatalytic oxidation reactor and the biological activated carbon reactor, the treated water can reach the reuse standard, and the recovery of the reverse osmosis concentrated water can be realized. resourceful.

The technical solution of the present invention is: high-salt reverse osmosis concentrated water reuse treatment equipment, including the following treatment units connected in sequence: regulating tank, peristaltic pump, photocatalytic oxidation reactor, biological activated carbon reactor, low-voltage carbon adsorption reactor And the ultrafiltration device, the bottom of the biological activated carbon reactor is connected with an air compressor, and the processing units are respectively connected by pipelines, and the water inlet of the regulating tank is provided with a water inlet pipe. The ultrafiltration unit is piped to the outlet water storage tank.

The regulating pool is used to adjust the water intake to ensure continuous water intake and stable operation of the device. The high-salt reverse osmosis concentrated water first enters the regulating tank to adjust the water volume, so as to ensure the continuous water intake and stable operation of the whole device. The volume of the adjustment pool is 10-20 liters.

The peristaltic pump is used to drive the effluent water from the regulating tank into the photocatalytic oxidation reactor. The effluent from the adjustment pool is pumped into the photocatalytic oxidation reactor by the peristaltic pump to carry out the photocatalytic oxidation reaction.

The function of the photocatalytic oxidation reactor is to use the photolysis reaction to convert the macromolecular organic matter in the high-salt reverse osmosis concentrated water into small molecular organic matter, improve the biodegradability of the reverse osmosis concentrated water, and remove some organic pollutants. The light source used in the photocatalytic oxidation reactor is an ultraviolet lamp. The power of the ultraviolet lamp is 39W, and the wavelength of ultraviolet light is 254nm.

The main function of the biological activated carbon reactor is to further remove organic pollutants by utilizing the synergistic effect of physical adsorption of activated carbon and biochemical degradation of biofilm. After photocatalytic oxidation, the effluent flows into the biological activated carbon reactor for biochemical reaction treatment.

The activated carbon in the biological activated carbon reactor adopts columnar granular activated carbon. The biofilm attached to the columnar granular activated carbon is mainly composed of salt-tolerant bacteria and a small amount of protozoa. These salt-tolerant microorganisms can oxidize and decompose organic pollutants under high-salt conditions, and have a strong ability to remove organic matter. The salt-tolerant flora is mainly composed of Pseudomonas, Bacillus, fungi, filamentous bacteria, etc. to form a dense gelatinous group, and a small amount of micro-animals such as ciliates, wandering insects, etc. are also mixed. It is derived from the return activated sludge of urban sewage treatment plants. After intensive domestication and cultivation, it attaches to activated carbon particles to form an active biofilm. The activated sludge used in the film hanging comes from the return activated sludge of the sewage treatment plant.

An air compressor is connected to the bottom of the bioactivated carbon reactor, and the function of the air compressor is to provide compressed air to supply the oxygen required for the biofilm biochemical reaction of the bioactivated carbon reactor.

The role of the low-voltage carbon adsorption reactor is to desalinate the effluent and remove dissolved solids in the water. The effluent from the biological activated carbon reactor enters the low-voltage carbon adsorption reactor for desalination treatment to remove most of the dissolved solids.

The function of the ultrafiltration device is to filter and purify the effluent through the ultrafiltration membrane. The effluent from the low-voltage carbon adsorption reactor enters the ultrafiltration device, and after being filtered and purified by the ultrafiltration membrane, the effluent is stored in the effluent storage tank. The effluent water reaches the water quality standard for reclaimed water used as an industrial water source, and can be reused as supplementary water for industrial cooling water.

The indicators of the high-salt reverse osmosis concentrated water are as follows: the pH value is 8-9, the COD value is 200-300 mg/L, the dissolved organic carbon DOC value is 40-50 mg/L, and the total dissolved solids TDS value is 2000-300 mg/L. 4000mg/L, the chromaticity value is 120-200 (Pt-Co).

The process steps of using the high-salt reverse osmosis concentrated water recycling treatment equipment of the present invention to process high-salt reverse osmosis concentrated water are as follows:

(1) Photocatalytic oxidation treatment: The high-salt reverse osmosis concentrated water is subjected to photocatalytic oxidation reaction. The light for the photocatalytic oxidation reaction is ultraviolet light, and the light source is an ultraviolet lamp; the photocatalytic oxidant is H ₂ O ₂ , and the dosage per liter of concentrated water is 1-6mM, preferably 4mM. The photolysis reaction time is 30-60 minutes, preferably 30 minutes. The device used is a photocatalytic oxidation reactor.

The power of the ultraviolet lamp is 39W, and the wavelength of ultraviolet light is 254nm.

The function of step (1) is: the macromolecular organic matter in the high-salt reverse osmosis concentrated water is gradually converted into small molecular organic matter through photolysis reaction, and the biochemical property of the reverse osmosis concentrated water is improved. After the treatment in step (1), the COD removal rate is 11.1% to 22.5%, and the effluent does not meet the water quality standard for reclaimed water used as an industrial water source.

(2) Biochemical treatment: the effluent after the photocatalytic oxidation reaction in step (1) is subjected to a biochemical reaction. The device used is a biological activated carbon reactor.

The empty bed contact time of the biological activated carbon reactor is 30 to 180 minutes; the biological activated carbon reactor operates intermittently, and the aeration reaction time of each reaction cycle is 9 to 10 hours. After stopping the aeration for 2 to 3 hours, the aeration reaction is carried out again. , cycle the aeration-stop aeration process.

The function of step (2) is to further reduce the concentration of organic matter through the metabolism of the salt-tolerant flora. After the treatment in step (2), the COD removal rate is 49.3%-91.2%, and the effluent reaches the water quality standard for reclaimed water used as an industrial water source.

(3) Desalination treatment: the effluent after the biochemical reaction in step (2) is subjected to desalination treatment, and the device used is a low-voltage carbon adsorption reactor. The main function is to remove dissolved solids in water. After this step, the TDS value of total dissolved solids in the effluent is 482-864 mg/L, reaching the water quality standard for reclaimed water used as a source of industrial water.

(4) Ultrafiltration and purification treatment: the effluent after the desalination treatment in step (3) is subjected to ultrafiltration and purification treatment, and the effluent is reused after reaching the standard.

The effluent treated in step (4) reaches the water quality standard for reclaimed water to be used as an industrial water source.

The reuse treatment equipment for high-salt reverse osmosis concentrated water provided by the present invention has the following advantages:

1. The removal efficiency of pollutants by using this equipment is high, the removal rate of COD can reach about 90%, the removal rate of TDS can reach more than 80%, and the removal rate of DOC can reach more than 90%;

2. It can realize the recycling of high-salt reverse osmosis concentrated water, and the treated effluent can meet the water quality standard of reclaimed water used as industrial water source, and can be recycled for industrial cooling water replenishment water;

3. It can be applied to the treatment of other high-salt wastewater with low organic concentration and difficult to biochemical;

4. It can overcome the problems of sludge bulking and sludge floating that are easy to occur in the activated sludge process. It has stable operation, strong impact load resistance, more economical and energy-saving, has a certain nitrification and denitrification function, and can realize closed operation. , Prevent odor, etc.

Compared with the prior art, the beneficial effect of the present invention is that after the high-salt reverse osmosis concentrated water is treated, the effluent can be reused for industrial production, which has important practical significance for saving water resources and protecting the water body environment.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the structural representation of comparative example 1 among the present invention;

Fig. 3 is the COD removal result schematic diagram of high-salt reverse osmosis concentrated water in comparative example 1 of the present invention;

Fig. 4 is the structural representation of comparative example 2 among the present invention;

Fig. 5 is a schematic diagram of the COD removal results of high-salt reverse osmosis concentrated water in Comparative Example 2 of the present invention.

Among them, in Fig. 1, Fig. 2 and Fig. 4: 1. Inlet pipe, 2. Adjusting tank, 3. Pipeline, 4. Peristaltic pump, 5. Photocatalytic oxidation reactor, 6. Bioactive carbon reactor, 7. Low voltage Carbon adsorption reactor, 8. Ultrafiltration device, 9. Outlet water storage tank, 10. Air compressor.

Detailed ways

The present invention will be described in detail below by means of drawings and examples.

Example 1:

Indicators of high-salt reverse osmosis concentrated water to be treated: pH value is 8.6, COD value is 207mg/L, dissolved organic carbon DOC value is 41.6mg/L, total dissolved solids TDS value is 3180mg/L, chromaticity value is 172 (Pt-Co). 5 liters of treated water.

As shown in Figure 1, the present invention comprises the following treatment units that are connected in sequence: regulating tank 2, peristaltic pump 4, photocatalytic oxidation reactor 5, bioactive carbon reactor 6, low-voltage carbon adsorption reactor 7 and ultrafiltration device 8, An air compressor 10 is connected to the bottom of the biological activated carbon reactor 6, and the processing units are connected through pipes 3, and a water inlet pipe 1 is arranged at the water inlet of the regulating tank 2. The ultrafiltration device 8 is connected to the outlet water storage tank 9 through the pipeline 3 . Regulating pool 2 volume is 10 liters.

Using the above-mentioned equipment, the above-mentioned high-salt reverse osmosis concentrated water is reused through the following process steps:

1. The concentrated high-salt reverse osmosis water first enters the adjustment tank 2 to adjust the water volume, so as to ensure that the whole device can continuously enter water and operate stably.

2. The effluent from the adjustment tank 2 is pumped into the photocatalytic oxidation reactor 5 by the peristaltic pump 4, and 0.068 mg of photocatalytic oxidant H ₂ O ₂ with a concentration of 50% is added. After 30 minutes of UV photolysis reaction, the macromolecular organic matter is gradually converted into small Molecular organic matter, while removing some organic matter, the biodegradability of wastewater is improved.

3. After photocatalytic oxidation, the effluent flows into the biological activated carbon reactor 6 for biochemical reaction treatment. An air compressor 10 is connected to the bottom of the bioactive carbon reactor 6 . The activated carbon in the biological activated carbon reactor 6 adopts columnar granular activated carbon. The biofilm attached to activated carbon is mainly composed of salt-tolerant bacteria, mixed with a small amount of protozoa. The activated sludge used in the film hanging comes from the return activated sludge of the sewage treatment plant.

The contact time of the biological activated carbon reactor 6 empty bed is 30min. The biological activated carbon reactor 6 operates intermittently. The aeration reaction time of each reaction cycle is 9-10h. After the aeration is stopped for 2-3h, the aeration reaction is carried out in a cycle Aeration-stop aeration process.

4. The water from the biological activated carbon reactor 6 enters the low-voltage carbon adsorption reactor 7 for desalination treatment to remove most of the dissolved solids.

5. The effluent from the low-voltage carbon adsorption reactor 7 enters the ultrafiltration device 8 , and the effluent is stored in the effluent storage tank 9 after being filtered and purified by the ultrafiltration membrane. The effluent water reaches the water quality standard for reclaimed water used as an industrial water source, and can be reused as supplementary water for industrial cooling water.

After testing, the final effluent indicators are: pH value 8.37, COD value 105mg/L, dissolved organic carbon DOC value 12.9mg/L, total dissolved solids TDS value 570mg/L, chromaticity value 41 (Pt -Co). The COD removal rate is 49.3%, the TDS removal rate is 82.1%, and the DOC removal rate is 69.0%.

Embodiment 2: except following difference, other is the same as embodiment 1.

2. Add 0.408 mg of photocatalytic oxidant H ₂ O ₂ , and conduct UV photolysis reaction for 60 minutes.

3. The contact time of the empty bed of biological activated carbon reactor 6 is 180min.

After testing, the final effluent indicators are: pH value is 8.45, COD value is 18.3mg/L, dissolved organic carbon DOC value is 2.37mg/L, total dissolved solids TDS value is 482mg/L, chromaticity value is 29 ( Pt-Co). The COD removal rate is 91.2%, the TDS removal rate is 84.8%, and the DOC removal rate is 94.3%.

Embodiment 3: except following difference, other is with embodiment 1.

2. Add 0.272 mg of photocatalytic oxidant H ₂ O ₂ , and conduct UV photolysis reaction for 30 minutes.

3. The contact time of the empty bed of biological activated carbon reactor 6 is 60min.

After testing, the final effluent indicators are: pH value is 8.46, COD value is 19.8mg/L, dissolved organic carbon DOC value is 2.87mg/L, total dissolved solids TDS value is 610mg/L, chromaticity value is 37 ( Pt-Co). The COD removal rate is 90.4%, the TDS removal rate is 80.8%, and the DOC removal rate is 93.1%.

Embodiment 4: except following difference, other is with embodiment 1.

2. Add 0.204 mg of photocatalytic oxidant H ₂ O ₂ , and react with UV photolysis for 45 minutes.

3. The contact time of the empty bed of biological activated carbon reactor 6 is 120min.

After testing, the final effluent indicators are: pH value is 8.39, COD value is 19.4mg/L, dissolved organic carbon DOC value is 2.75mg/L, total dissolved solids TDS value is 672mg/L, chromaticity value is 51( Pt-Co).

The COD removal rate is 90.6%, the TDS removal rate is 78.9%, and the DOC removal rate is 93.4%.

Embodiment 5: except following difference, other is with embodiment 1.

Indicators of high-salt reverse osmosis concentrated water to be treated: pH value is 8, COD value is 205.4mg/L, dissolved organic carbon DOC value is 40.2mg/L, total dissolved solids TDS value is 2031mg/L, chromaticity value It is 117 (Pt-Co). 5 liters of treated water.

2. Add 0.272 mg of photocatalytic oxidant H ₂ O ₂ , and conduct UV photolysis reaction for 30 minutes.

3. The contact time of the empty bed of biological activated carbon reactor 6 is 60min.

After testing, the final effluent indicators are: pH value is 8.33, COD value is 19.9mg/L, dissolved organic carbon DOC value is 3.49mg/L, total dissolved solids TDS value is 532mg/L, chromaticity value is 35 ( Pt-Co). The COD removal rate is 90.3%, the TDS removal rate is 73.8%, and the DOC removal rate is 91.3%.

Embodiment 6: except following difference, other is the same as embodiment 1.

Indicators of high-salt reverse osmosis concentrated water to be treated: pH value is 9, COD value is 297.6mg/L, dissolved organic carbon DOC value is 49.4mg/L, total dissolved solids TDS value is 3977mg/L, chromaticity value It is 203 (Pt-Co). 5 liters of treated water.

2. Add 0.272 mg of photocatalytic oxidant H ₂ O ₂ , and conduct UV photolysis reaction for 30 minutes.

3. The contact time of the empty bed of biological activated carbon reactor 6 is 60min.

After testing, the final effluent indicators are: pH value 8.42, COD value 29.7mg/L, dissolved organic carbon DOC value 4.05mg/L, total dissolved solids TDS value 864mg/L, chromaticity value 64 ( Pt-Co). The COD removal rate is 90.0%, the TDS removal rate is 78.3%, and the DOC removal rate is 91.8%.

Comparative example 1:

Indicators of high-salt reverse osmosis concentrated water to be treated: pH value is 8.7, COD value is 227mg/L, dissolved organic carbon DOC value is 41.6mg/L, total dissolved solids TDS value is 3180mg/L, chromaticity value is 170 (Pt-Co). 5 liters of treated water.

As shown in Figure 2, the high-salt reverse osmosis concentrated water recycling treatment equipment includes the following processing units connected in sequence: regulating tank 2, peristaltic pump 4, photocatalytic oxidation reactor 5, low-voltage carbon adsorption reactor 7 and ultrafiltration The device 8 is connected to each processing unit through the pipeline 3, and the water inlet pipe 1 is set at the water inlet of the regulating tank 2. The ultrafiltration device 8 is connected to the outlet water storage tank 9 through the pipeline 3 . Regulating pool 2 volume is 10 liters.

Using the above-mentioned equipment, the above-mentioned high-salt reverse osmosis concentrated water is reused through the following process steps:

1. The concentrated high-salt reverse osmosis water first enters the adjustment tank 2 to adjust the water volume, so as to ensure that the whole device can continuously enter water and operate stably.

2. The effluent of the regulating tank 2 is pumped into the photocatalytic oxidation reactor 5 by the peristaltic pump 4, and the photocatalytic oxidant H ₂ O ₂ is added. After the UV photolysis reaction, the macromolecular organic matter is gradually converted into a small molecular organic matter, and part of the organic matter is removed. , The biodegradability of wastewater is improved.

3. The effluent from the photocatalytic oxidation reactor 5 directly enters the low-voltage carbon adsorption reactor 7 for desalination treatment to remove most of the dissolved solids.

4. The effluent from the low-voltage carbon adsorption reactor 7 enters the ultrafiltration device 8 , and the effluent is stored in the effluent storage tank 9 after being filtered and purified by the ultrafiltration membrane.

The high-salt reverse osmosis concentrated water is subjected to desalination treatment and ultrafiltration purification treatment after being treated by the regulating tank 2 to adjust the water volume and photocatalytic oxidation reaction, without undergoing biochemical reaction treatment.

The dosage of photocatalytic oxidant H ₂ O ₂ per liter of concentrated water in photocatalytic oxidation reactor 5 is 4mM, and the photolysis reaction time is 0min, 10min, 30min, 60min, 120min and 180min respectively; the COD removal results are shown in Figure 3 Show.

Figure 3 shows that after photocatalytic oxidation treatment alone, the COD removal efficiency of high-salt reverse osmosis concentrated water is only about 20%, and the effluent cannot meet the reuse requirements.

Comparative example 2:

The index of high-salt reverse osmosis concentrated water to be treated is the same as that of Comparative Example 1.

As shown in Figure 4, the high-salt reverse osmosis concentrated water recycling treatment equipment includes the following processing units connected in sequence: regulating tank 2, peristaltic pump 4, biological activated carbon reactor 6, low-voltage carbon adsorption reactor 7 and ultrafiltration device 8. An air compressor 10 is connected to the bottom of the biological activated carbon reactor 6, and each processing unit is connected through a pipe 3, and a water inlet pipe 1 is set at the water inlet of the regulating tank 2. The ultrafiltration device 8 is connected to the outlet water storage tank 9 through the pipeline 3 . Regulating pool 2 volume is 10 liters.

Using the above-mentioned equipment, the above-mentioned high-salt reverse osmosis concentrated water is reused through the following process steps:

1. The concentrated high-salt reverse osmosis water first enters the adjustment tank 2 to adjust the water volume, so as to ensure that the whole device can continuously enter water and operate stably.

2. The effluent from the adjustment tank 2 is pumped into the biological activated carbon reactor 6 by the peristaltic pump 4 for biochemical reaction treatment. An air compressor 10 is connected to the bottom of the bioactive carbon reactor 6 . The activated carbon in the biological activated carbon reactor 6 adopts columnar granular activated carbon. The biofilm attached to activated carbon is mainly composed of salt-tolerant bacteria, mixed with a small amount of protozoa. The activated sludge used in the film hanging comes from the return activated sludge of the sewage treatment plant.

The biological activated carbon reactor 6 operates intermittently, and the aeration reaction time of each reaction cycle is 9-10 hours. After the aeration is stopped for 2-3 hours, the aeration reaction is carried out again, and the aeration-stop aeration process is carried out in a cycle.

3. The water from the biological activated carbon reactor 6 enters the low-voltage carbon adsorption reactor 7 for desalination treatment to remove most of the dissolved solids.

4. The effluent from the low-voltage carbon adsorption reactor 7 enters the ultrafiltration device 8 , and the effluent is stored in the effluent storage tank 9 after being filtered and purified by the ultrafiltration membrane.

The high-salt reverse osmosis concentrated water enters the biological activated carbon reactor 6 for biochemical reaction treatment after being adjusted by the regulating tank 2, and then undergoes desalination treatment and ultrafiltration purification treatment without photocatalytic oxidation reaction treatment.

The empty bed contact time of the biological activated carbon reactor 6 is 0min, 30min, 45min, 60min, 120min and 180min respectively. The COD removal results are shown in Figure 5.

Figure 5 shows that after biochemical reaction treatment alone, the COD removal efficiency of high-salt reverse osmosis concentrated water is only about 30%, and the effluent cannot meet the reuse requirements.

Claims (8)

1. the Treatment for Reuse equipment of a high salt reverse osmosis concentrated water; Comprise the following processing unit that connects successively: equalizing tank (2), peristaltic pump (4), photocatalysis oxidation reaction device (5), biological activated carbon reactor drum (6), low voltage charcoal adsorptive reactor (7) and ultra-filtration equipment (8); Said biological activated carbon reactor drum (6) bottom is connected with air compressor machine (10); Be connected through pipeline (3) respectively between each processing unit, said equalizing tank (2) water inlet is provided with water inlet pipe (1).

2. the Treatment for Reuse equipment of high salt reverse osmosis concentrated water according to claim 1 is characterized in that, said ultra-filtration equipment (8) connects water outlet storage tank (9) through pipeline (3).

3. the Treatment for Reuse equipment of high salt reverse osmosis concentrated water according to claim 1 is characterized in that, the light source that uses in the said photocatalysis oxidation reaction device (5) is a UV-lamp.

4. the Treatment for Reuse equipment of high salt reverse osmosis concentrated water according to claim 3 is characterized in that, the power of said UV-lamp is 39W, and the ultraviolet wavelength is 254nm.

5. the Treatment for Reuse equipment of high salt reverse osmosis concentrated water according to claim 1 is characterized in that, the gac in the said biological activated carbon reactor drum (6) adopts the cylindrical particle gac.

6. the Treatment for Reuse equipment of high salt reverse osmosis concentrated water according to claim 5 is characterized in that, the appended microbial film of column granulated active carbon mainly is made up of the salt tolerant flora in the said biological activated carbon reactor drum (6).

7. the Treatment for Reuse equipment of high salt reverse osmosis concentrated water according to claim 1 is characterized in that, said equalizing tank (2) volume is 10～20 liters.

8. the reuse treatment process of high salt reverse osmosis concentrated water according to claim 1; It is characterized in that; The pH value of said high salt reverse osmosis concentrated water is 8～9, and the COD value is 200～300mg/L, and dissolved organic carbon DOC value is 40～50mg/L; Total dissolved solid TDS value is 2000～4000mg/L, and colourimetric number is 120～200 (Pt-Co).

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