Biological treatment system for salt-containing organic wastewater

Abstract

The utility model relates to a biological treatment system for salt-containing organic wastewater, which is characterized in that in the actual wastewater treatment process, when wastewater needs to be treated, wastewater containing sodium chloride, sodium sulfate salt and residual mother liquor of cane sugar is input into a homogenizing system through an inlet end; then balancing and adjusting the water quality and the water quantity of the sewage and controlling the change of the water temperature through a homogenizing system, then introducing the wastewater treated by the homogenizing system into a micro-electrolysis pretreatment reactor for treatment, and adding a ferrous sulfate solution and H2O2 mixed solution into the wastewater in the micro-electrolysis pretreatment reactor; the method comprises the following steps: introducing wastewater into a micro-electrolysis pretreatment reactor, enabling most components of the wastewater to be degraded under the action of the micro-electrolysis pretreatment reactor, enabling the wastewater in the micro-electrolysis pretreatment reactor to enter an efficient anaerobic reactor to degrade COD (Chemical Oxygen Demand), introducing the wastewater in the efficient anaerobic reactor into a CASS (Cyclic Activated Sludge System) pool, degrading ammonia nitrogen COD in the wastewater, enabling the wastewater in the CASS pool to enter a high-density clarifier, and precipitating, and the precipitated water is discharged through the outlet end.

Description

Technical Field

[0001] The utility model relates to the technical field of salt-containing organic wastewater treatment, in particular to a biological treatment system for salt-containing organic wastewater. Background Art

[0002] The biopharmaceutical industry produces a large amount of wastewater when preparing drugs. The wastewater contains sodium chloride, sodium sulfate salts and residual sucrose mother liquor, which causes serious pollution and harm to the environment.

[0003] With the progress of society and the continuous development of industry, the output of chemical plants has gradually increased, and the amount of wastewater has also gradually increased. In the high-salt and high-organic chemical wastewater treatment project, traditional methods are difficult to treat high-organic chemical wastewater alone, and the treatment efficiency is low or it is difficult to meet the treatment standards. Utility Model Content

[0004] (1) Technical issues to be resolved

[0005] In order to solve the above problems of the prior art, the utility model provides a biological treatment system for saline organic wastewater, which can better treat wastewater containing sodium chloride, sodium sulfate salts and mother liquor with sucrose residues, improve wastewater treatment efficiency, and ensure that wastewater treatment meets standards.

[0006] (2) Technical solution

[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by this utility model include:

[0008] A biological treatment system for saline organic wastewater comprises a homogenization system, a micro-electrolysis pretreatment reactor, a high-efficiency anaerobic reactor, a CASS tank and a high-density clarifier, wherein the homogenization system, the micro-electrolysis pretreatment reactor, the high-efficiency anaerobic reactor, the CASS tank and the high-density clarifier are connected in sequence, the homogenization system is provided with an inlet end, and the high-density clarifier is provided with an outlet end.

[0009] Furthermore, it also includes a nitrification and denitrification reactor, and the nitrification and denitrification reactor is arranged inside the CASS pool.

[0010] Furthermore, it also includes a pH controller and an automatic dosing control device, and the pH controller and the automatic dosing control device are provided on the micro-electrolysis pretreatment reactor.

[0011] Furthermore, a special film-forming device and an aeration device are also included, and the special film-forming device and the aeration device are also arranged inside the CASS pool.

[0012] (3) Beneficial effects

[0013] The beneficial effect of the utility model is that in the actual wastewater treatment process, when the wastewater needs to be treated, the wastewater containing sodium chloride, sodium sulfate salts and sucrose residual mother liquor is input into the homogenization system through the inlet end, and then the water quality and water volume of the sewage are balanced and adjusted and the change of water temperature is controlled by the homogenization system. Then, the wastewater treated by the homogenization system is passed into the micro-electrolysis pretreatment reactor for treatment, and a ferrous sulfate solution + H2O2 mixed solution is added to the wastewater in the micro-electrolysis pretreatment reactor, so that most of the components of the wastewater are degraded under the action of the micro-electrolysis pretreatment reactor. Then, the wastewater in the micro-electrolysis pretreatment reactor enters the high-efficiency anaerobic reactor to degrade COD. Then, the wastewater in the high-efficiency anaerobic reactor is introduced into the CASS pool, and the ammonia nitrogen COD in the wastewater is degraded. Then, the wastewater in the CASS pool enters the high-density clarifier for precipitation, and the water after precipitation is discharged through the outlet end, thereby better treating the wastewater containing sodium chloride, sodium sulfate salts and sucrose residual mother liquor, improving the wastewater treatment efficiency, and ensuring that the wastewater treatment meets the standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of a biological treatment system for saline organic wastewater according to an embodiment of the present invention;

[0015] [Description of Reference Numerals]

[0016] Homogenization system 101, micro-electrolysis pretreatment reactor 102, high-efficiency anaerobic reactor 103, CASS tank 104, high-density clarifier 105, pH controller 106, automatic dosing control device 107, nitrification and denitrification reactor 108, film forming device 109, and aeration device 110. DETAILED DESCRIPTION

[0017] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0018] Please refer to Figure 1 As shown, the present invention is a biological treatment system for saline organic wastewater, comprising a homogenization system 101, a micro-electrolysis pretreatment reactor 102, a high-efficiency anaerobic reactor 103, a CASS tank 104 and a high-density clarifier 105. The homogenization system 101, the micro-electrolysis pretreatment reactor 102, the high-efficiency anaerobic reactor 103, the CASS tank 104 and the high-density clarifier 105 are connected in sequence, the homogenization system 101 is provided with an inlet end, and the high-density clarifier 105 is provided with an outlet end.

[0019] The working principle of the present invention is as follows: in the actual wastewater treatment process, when the wastewater needs to be treated, the wastewater containing sodium chloride, sodium sulfate salts and sucrose residual mother liquor is input into the homogenization system 101 through the inlet end, and then the water quality and water volume of the sewage are balanced and adjusted and the change of water temperature is controlled by the homogenization system 101. Then, the wastewater treated by the homogenization system 101 is passed into the micro-electrolysis pretreatment reactor 102 for treatment, and ferrous sulfate solution + H2O2 mixed liquid is added to the wastewater in the micro-electrolysis pretreatment reactor 102, so that most of the components of the wastewater are degraded under the action of the micro-electrolysis pretreatment reactor 102. Then, the wastewater from the micro-electrolysis pretreatment reactor 102 enters the high-efficiency anaerobic reactor 103 to degrade COD, and then the wastewater in the high-efficiency anaerobic reactor 103 is introduced into the CASS pool 104, and the ammonia nitrogen COD in the wastewater is degraded. Then, the wastewater in the CASS pool 104 enters the high-density clarifier 105 for precipitation, and the water after precipitation is discharged through the outlet end.

[0020] Furthermore, a nitrification and denitrification reactor 108 is further included. The nitrification and denitrification reactor 108 is disposed inside the CASS pool 104 .

[0021] From the above description, it can be seen that the nitrification and denitrification reactor 108 is conducive to better degradation of ammonia nitrogen COD in wastewater.

[0022] Furthermore, it also includes a pH controller 106 and an automatic dosing control device 107 . The pH controller 106 and the automatic dosing control device 107 are provided on the micro-electrolysis pretreatment reactor 102 .

[0023] From the above description, it can be seen that the pH controller 106 is conducive to monitoring the pH value of the wastewater. When the pH value changes, the ferrous sulfate solution + H2O2 mixture is added to the wastewater through the automatic dosing control device 107, which facilitates the micro-electrolysis pretreatment reactor 102 to better degrade most of the organic matter in the wastewater.

[0024] Furthermore, a dedicated biofilm forming device 109 and an aeration device 110 are also included. The dedicated biofilm forming device 109 and the aeration device 110 are also provided inside the CASS pool 104 .

[0025] As can be seen from the above description, the dedicated biofilm device 109 is beneficial for protecting the structure of the sewage treatment equipment, preventing corrosion, reducing maintenance and repair costs, and removing most of the organic pollutants in the sewage through the aeration device 110 to even out the sewage and the aerobic oxidation of microorganisms in the biochemical CASS tank 104. Example 1

[0026] Please refer to Figure 1A biological treatment system for saline organic wastewater comprises a homogenizing system 101, a micro-electrolysis pretreatment reactor 102, a high-efficiency anaerobic reactor 103, a CASS tank 104, and a high-density clarifier 105. The homogenizing system 101, the micro-electrolysis pretreatment reactor 102, the high-efficiency anaerobic reactor 103, the CASS tank 104, and the high-density clarifier 105 are connected in sequence. The homogenizing system 101 is provided with an inlet end, and the high-density clarifier 105 is provided with an outlet end.

[0027] It also includes a nitrification and denitrification reactor 108, and the nitrification and denitrification reactor 108 is arranged inside the CASS pool 104;

[0028] It also includes a pH controller 106 and a dosing automatic control device 107. The pH controller 106 and the dosing automatic control device 107 are provided on the micro-electrolysis pretreatment reactor 102;

[0029] The CASS pool 104 further includes a dedicated biofilm forming device 109 and an aeration device 110 . The dedicated biofilm forming device 109 and the aeration device 110 are also provided inside the CASS pool 104 .

[0030] The above shows and describes the basic principles, main features and advantages of the present invention, and the standard parts used in the present invention can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0031] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the description and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A biological treatment system for saline organic wastewater, characterized by: It includes a homogenization system, a micro-electrolysis pretreatment reactor, a high-efficiency anaerobic reactor, a CASS tank and a high-density clarifier. The homogenization system, the micro-electrolysis pretreatment reactor, the high-efficiency anaerobic reactor, the CASS tank and the high-density clarifier are connected in sequence. The homogenization system is provided with an inlet end, and the high-density clarifier is provided with an outlet end.

2. The biological treatment system for saline organic wastewater according to claim 1, wherein: It also includes a nitrification and denitrification reactor, which is arranged inside the CASS pool.

3. The biological treatment system for saline organic wastewater according to claim 1, wherein: It also includes a pH controller and an automatic dosing control device, and the pH controller and the automatic dosing control device are arranged on the micro-electrolysis pretreatment reactor.

4. The biological treatment system for saline organic wastewater according to claim 1, wherein: It also includes a special film-forming device and an aeration device, and the special film-forming device and the aeration device are also arranged inside the CASS pool.

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