CN216687829U

CN216687829U - Organic wastewater integrated treatment device

Info

Publication number: CN216687829U
Application number: CN202123295118.6U
Authority: CN
Inventors: 谢祥辉; 张莉; 钟高峰
Original assignee: Quanzhou Institute For Environmental Protection Industry Nanjing University
Current assignee: Quanzhou Institute For Environmental Protection Industry Nanjing University
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-06-07
Anticipated expiration: 2031-12-24

Abstract

An integrated treatment device for organic wastewater, which comprises a shell, a cooling system and an MBR membrane system; the shell comprises a filtering area, an electrocatalytic oxidation area, an MBR reaction area and a water storage area which are formed inside the shell and connected in sequence; the cooling system is arranged in the filtering area and used for cooling the organic wastewater in the electrocatalytic oxidation area and comprises a temperature sensor arranged in the electrocatalytic oxidation area, a heat exchanger arranged in the filtering area, a water inlet pipe connected between an inlet of the heat exchanger and the electrocatalytic oxidation area, a return pipe connected between an outlet of the heat exchanger and the electrocatalytic oxidation area and a delivery pump arranged on the water inlet pipe; the MBR membrane system sets up in the MBR reaction zone, handles the organic waste water after the electro-catalytic oxidation district purifies, and temperature sensor detects the organic waste water temperature in electro-catalytic oxidation district, and when the temperature value that detects surpassed the default, the organic waste water was carried to the heat exchanger through the delivery pump and is refluxed to the electro-catalytic oxidation district and reprocessed after dispelling the heat again, guarantees the treatment effect in electro-catalytic oxidation district.

Description

Organic wastewater integrated treatment device

Technical Field

The utility model belongs to the field of organic wastewater treatment, and particularly relates to an organic wastewater integrated treatment device.

Background

Along with the rapid development of chemical industry in China, various novel chemical products are applied to various industries, the problem of increasingly serious environmental pollution is brought while the product quality and quality are improved, and wastewater generated in the production process of the chemical products is represented as follows: large discharge amount, large toxicity, high concentration of organic matters, high salt content, high chromaticity, high content of refractory compounds and large treatment difficulty. Wherein the organic wastewater is always a problem concerned by a plurality of domestic environment protection workers and management departments. The main points are as follows: the organic pollutants in the wastewater have high concentration, stable structure and poor biodegradability, the conventional process is difficult to realize standard emission, the treatment cost is high, and great pressure is brought to energy conservation and emission reduction of enterprises. In the production of the chemical industry, particularly in the heavy pollution industries such as medicine, chemical industry, electroplating, printing and dyeing and the like, more organic wastewater can be generated, and the great influence is generated on the living environment of people, so that the physical, chemical and biological treatment technology of the high-concentration organic wastewater in the chemical industry is explored, a certain reference is brought to the normal production of the chemical industry and the guarantee of the living environment of people, and the method has important value.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides an integrated organic wastewater treatment device.

The utility model adopts the following technical scheme:

an organic wastewater integrated treatment device comprises a shell, a cooling system and an MBR membrane system;

the shell comprises a filtering area, an electrocatalytic oxidation area, an MBR reaction area and a water storage area which are formed in the shell and connected in sequence;

the cooling system is arranged in the filtering area and used for cooling the organic wastewater in the electrocatalytic oxidation area and comprises a temperature sensor arranged in the electrocatalytic oxidation area, a heat exchanger arranged in the filtering area, a water inlet pipe, a return pipe and a delivery pump, wherein one end of the water inlet pipe is connected with an inlet of the heat exchanger, the other end of the water inlet pipe is connected with the electrocatalytic oxidation area, one end of the return pipe is connected with an outlet of the heat exchanger, and the other end of the return pipe is connected with the electrocatalytic oxidation area;

the MBR membrane system is arranged in an MBR reaction zone and is used for treating the organic wastewater purified by the electrocatalytic oxidation zone, and the MBR membrane system comprises an MBR membrane component arranged in the MBR reaction zone, an aeration component arranged in the MBR reaction zone and used for aerating the MBR membrane component, a water outlet pipe with one end connected with the outlet of the MBR membrane component and the other end extending to the water storage zone, and a water outlet pump arranged on the water outlet pipe.

Further, the MBR membrane system also comprises a back washing component for washing the MBR membrane component.

Furthermore, the back washing component comprises a back washing pipe and a back washing pump, wherein one end of the back washing pipe is connected with the inlet of the MBR membrane component, and the other end of the back washing pipe extends to the water storage area.

Furthermore, the aeration component comprises an aeration pipe arranged in the MBR reaction zone and positioned below the MBR membrane component, and an air inlet pipe with one end connected with the aeration pipe and the other end extending outwards to the shell.

Further, the filtering area is provided with a security filter.

Further, a pressure gauge is arranged at the top of the cartridge filter.

Furthermore, the electrocatalytic oxidation zone is provided with an electrolysis unit, and the electrolysis unit comprises a cathode plate and an anode plate which are arranged at intervals in the electrocatalytic oxidation zone.

As can be seen from the above description of the present invention, compared with the prior art, the beneficial effects of the present invention are: firstly, a temperature sensor is arranged in an electrocatalytic oxidation zone to detect the temperature of organic wastewater in the electrocatalytic oxidation zone, and when the detected temperature value exceeds a preset value, the organic wastewater is conveyed to a heat exchanger through a conveying pump to be radiated and then flows back to the electrocatalytic oxidation zone to be reprocessed, so that the treatment effect of the electrocatalytic oxidation zone is prevented from being influenced by overhigh temperature, and the treatment effect of the electrocatalytic oxidation zone is ensured;

second, this application is through injecing processing apparatus's concrete structure, integrated processes such as electrochemistry, biological purification to improve organic waste water's treatment effeciency, thereby reach energy saving and consumption reduction, reduce the purpose of operating cost, and the integration sets up, can effectively practice thrift and take up an area of.

Drawings

FIG. 1 is a schematic structural view of the present invention;

in the figure, 1-shell, 2-cooling system, 3-MBR membrane system, 4-cartridge filter, 5-electrolysis unit, 11-filtration zone, 12-electrocatalytic oxidation zone, 13-MBR reaction zone, 14-water storage zone, 21-temperature sensor, 22-heat exchanger, 23-water inlet pipe, 24-return pipe, 25-delivery pump, 31-MBR membrane module, 32-aeration module, 321-aeration pipe, 322-air inlet pipe, 33-water outlet pipe, 34-water outlet pump, 35-backwash module, 351-backwash pipe, 352-backwash pump, 41-pressure gauge, 51-cathode plate and 52-anode plate.

Detailed Description

The utility model is further described below by means of specific embodiments.

Referring to fig. 1, the integrated organic wastewater treatment device comprises a shell 1, a cooling system 2, an MBR membrane system 3, a cartridge filter 4 and an electrolysis unit 5.

The shell 1 comprises a filtering area 11, an electrocatalytic oxidation area 12, an MBR reaction area 13 and a water storage area 14 which are formed in the shell and connected in sequence.

The cooling system 1 is arranged in the filtering area 11 and used for cooling the organic wastewater in the electrocatalytic oxidation area 12, and comprises a temperature sensor 21 arranged in the electrocatalytic oxidation area 12, a heat exchanger 22 arranged in the filtering area 11, a water inlet pipe 23 with one end connected with an inlet of the heat exchanger 22 and the other end connected with the electrocatalytic oxidation area 12, a return pipe 24 with one end connected with an outlet of the heat exchanger 22 and the other end connected with the electrocatalytic oxidation area 12, a delivery pump 25 arranged on the water inlet pipe 23 and a controller connected with the temperature sensor 21, wherein the temperature sensor 21 detects the temperature of the electrocatalytic oxidation area 12 in real time and feeds the temperature back to the controller; the controller is respectively connected with the delivery pump 25 and the heat exchanger 22, and controls the delivery pump 25 and the heat exchanger 22 to work according to signals fed back by the temperature sensor 21; the controller can adopt a PLC controller to realize the control of each area of the whole processing device; specifically, when the temperature in the electrocatalytic oxidation zone 12 exceeds 60 ℃, the controller controls the operation of the delivery pump 25 and the heat exchanger 22 so as to cool the organic wastewater; further, the heat exchanger 22 is a device commonly used in the field of wastewater treatment, and the detailed structure and working principle thereof are not further described herein.

The MBR membrane system 3 is arranged in the MBR reaction zone 13 and is used for treating the organic wastewater purified by the electrocatalytic oxidation zone 12, and comprises an MBR membrane module 31 arranged in the MBR reaction zone 13, an aeration module 32 arranged in the MBR reaction zone 13 and used for aerating the MBR membrane module 31, a water outlet pipe 33, one end of which is connected with the outlet of the MBR membrane module 31 and the other end of which extends to the water storage zone 14, a water outlet pump 34 arranged on the water outlet pipe 33 and a back washing module 35 used for washing the MBR membrane module 31; the MBR membrane system 3 replaces a terminal secondary sedimentation tank of the traditional biological treatment technology with a membrane component, keeps high active sludge concentration in a bioreactor, improves the biological treatment organic load, thereby reducing the occupied area of sewage treatment facilities, reduces the excess sludge amount by keeping low sludge load, and mainly utilizes active sludge and macromolecular organic matters immersed in a membrane separation device intercepting tank in an aerobic biological tank; the concentration of activated sludge (MLSS) in the MBR membrane system 3 can be increased to 8000-10000mg/L, even higher; the sludge age (SRT) can be prolonged to more than 30 days; due to the effective interception function of the MBR membrane assembly, microorganisms with long generation period can be reserved, the deep purification of the wastewater can be realized, meanwhile, nitrifying bacteria can be fully propagated in the system, the nitrification effect is obvious, the deep dephosphorization and denitrification are possible, and the organic wastewater treated by the MBR membrane assembly 3 can be discharged; specifically, the MBR membrane module 31 is a common device in the field of wastewater treatment, and the specific structure and the working principle thereof are not further described herein.

The aeration assembly 32 comprises an aeration pipe 321 arranged in the MBR reaction zone 13 below the MBR membrane assembly 31 and an air inlet pipe 322 with one end connected with the aeration pipe 321 and the other end extending outwards to the outside of the shell 1.

The backwashing component 35 comprises a backwashing pipe 351 and a backwashing pump 352, wherein one end of the backwashing pipe 351 is connected with an inlet of the MBR membrane component 31, and the other end of the backwashing pipe 351 extends to the water storage area 14, the backwashing pump 352 is arranged on the backwashing pipe 351, the MBR membrane component 31 is flushed by using the purified organic wastewater, and the utilization rate of resources can be improved under the condition that the normal use of the MBR membrane component 31 is ensured.

The cartridge filter 4 filters the organic wastewater entering the electrocatalytic oxidation zone 12, and the cartridge filter 4 is provided with a 20-micron non-woven fabric filter bag as a pre-filtering system to remove particle impurities in the raw water and prevent adverse effects on a rear-end device; specifically, the top of the cartridge filter 4 is provided with a pressure gauge 41, and when the pressure value exceeds 0.2MPa, the filter bag needs to be replaced in time to ensure the normal use of the cartridge filter 4.

The electrolysis unit 5 is arranged in the electrocatalytic oxidation zone 12 and is used for carrying out electrolytic treatment on the organic wastewater, and comprises a cathode plate 51 and an anode plate 52 which are arranged in the electrocatalytic oxidation zone 12 at intervals, an electric field is formed between the two electrodes through an external power supply, and compared with the direct oxidation of ozone, the reaction rate of hydroxyl radicals (HO) generated in an electrocatalytic oxidation system is 10 times higher, the selectivity is not existed, almost all organic matters can be reacted, so the effect of advanced oxidation is stable, and the change of residual organic matters in water can not be caused; the hydroxyl free radicals are used for converting high-molecular difficultly-degradable substances in the organic wastewater into low-molecular easily-biodegradable substances, and simultaneously, the COD index in the water is also reduced, and the treatment requirement is met.

This application is through injecing processing apparatus's concrete structure, integrated processes such as electrochemistry, biological purification to improve organic waste water's treatment effeciency, thereby reach energy saving and consumption reduction, reduce the purpose of operating cost, and the integration sets up, can effectively practice thrift and take up an area of.

The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the utility model, which is defined by the appended claims and their equivalents and modifications within the scope of the description.

Claims

1. The utility model provides an organic waste water integration processing apparatus which characterized in that: comprises a shell, a cooling system and an MBR membrane system;

2. The integrated organic wastewater treatment device according to claim 1, characterized in that: the MBR membrane system also comprises a back washing component for washing the MBR membrane component.

3. The integrated organic wastewater treatment device according to claim 2, characterized in that: the backwashing component comprises a backwashing pipe and a backwashing pump, wherein one end of the backwashing pipe is connected with the inlet of the MBR membrane component, and the other end of the backwashing pipe extends to the water storage area.

4. The integrated organic wastewater treatment device according to claim 1, characterized in that: the aeration component comprises an aeration pipe arranged in the MBR reaction area and positioned below the MBR membrane component and an air inlet pipe with one end connected with the aeration pipe and the other end extending outwards to the shell.

5. The integrated organic wastewater treatment device according to claim 1, characterized in that: the filtering area is provided with a security filter.

6. The integrated organic wastewater treatment device according to claim 5, characterized in that: and a pressure gauge is arranged at the top of the security filter.

7. The integrated organic wastewater treatment device according to claim 1, characterized in that: the electrocatalytic oxidation zone is provided with an electrolysis unit, and the electrolysis unit comprises a cathode plate and an anode plate which are arranged at the electrocatalytic oxidation zone at intervals.