Multi-point water inlet sewage treatment device

Abstract

The utility model discloses a multi-point water inlet sewage treatment device, which relates to the technical field of sewage treatment, and mainly comprises a water inlet, an anaerobic A tank, an MABR-A1 tank, an O tank, an MABR-A2 tank, an MBBR-O tank, a sedimentation tank, a deep treatment tank, a water outlet and a gas supply system, two-point water inlet is arranged, the first water inlet is arranged at the front end of the anaerobic A tank, the second water inlet is arranged at the front end of the MABR-A2 tank, the third water inlet is arranged at the front end of the MBBR-O tank, and the third water inlet is arranged at the front end of the MBBR-O tank. The anaerobic A tank, the MABR-A1 tank, the O tank, the MABR-A2 tank and the MBBR-O tank are connected in sequence, the effluent of the MBBR-O tank enters the sedimentation tank, the settled water enters the deep treatment tank, the deep treatment tank adopts an upper water inlet to discharge water, a water outlet is formed in the bottom of the tail end of the deep sedimentation tank, and the gas supply system supplies gas to the MABR-A1 tank, the O tank, the MABR-A2 tank and the MBBR-O tank respectively. The device adopts two-point water feeding, fully utilizes a carbon source, degrades pollutants in water, and realizes efficient operation of water treatment.

Description

Technical Field

[0001] The utility model discloses a sewage treatment device with multiple water inlet points, and relates to the technical field of sewage treatment. Background Art

[0002] Urban sewage treatment technology is becoming more and more mature. With the rapid development of the economy, the requirements for water quality indicators of sewage treatment are getting higher and higher, and many new technologies are gradually emerging. Among them, MABR technology has been widely used in surface water treatment and urban sewage treatment plant upgrading and transformation, but it also needs to reduce costs and be used in combination with other processes. At present, the C / N ratio of urban sewage influent is not very high. While improving the effluent indicators after treatment, it is found that there is a serious shortage of carbon sources required in the treatment process. In order to reduce or not add external carbon sources, it is necessary to divert the influent. Combine the new technologies such as MABR technology and MBBR technology with traditional processes to reduce internal reflux and carbon source addition, so as to achieve efficient treatment of urban sewage. Utility Model Content

[0003] The utility model provides a sewage treatment device with multi-point water inlet, adopts the process flow of water inlet→pretreatment system→AAO process→AO process→sedimentation tank→deep treatment system→water outlet, combines MABR technology and MBBR technology with traditional AAO and AO processes to form a new combined process, utilizes the multi-point water inlet mode, makes full use of carbon sources, improves the removal efficiency of sewage treatment, and realizes safe, reliable, low-cost and sustainable operation of sewage treatment.

[0004] The utility model is realized by the following technical solutions:

[0005] A sewage treatment device with multiple water inlet points, characterized in that it mainly includes a water inlet, an anaerobic A tank, a MABR-A1 tank, an O tank, a MABR-A2 tank, an MBBR-O tank, a sedimentation tank, a deep treatment tank, a water outlet and an air supply system, wherein two water inlet points are set, the first water inlet is set at the front end of the anaerobic A tank, the second water inlet is set at the front end of the MABR-A2 tank, the anaerobic A tank, the MABR-A1 tank, the O tank, the MABR-A2 tank and the MBBR-O tank are connected in sequence, the effluent of the MBBR-O tank enters the sedimentation tank, and the water after sedimentation enters the deep treatment tank, the deep treatment tank adopts upper water inlet and lower water outlet, the water outlet is set at the bottom of the deep sedimentation tank, the air supply system is mainly composed of air supply equipment, air supply pipes and valves, and the air supply system supplies air to the MABR-A1 tank, the O tank, the MABR-A2 tank and the MBBR-O tank respectively;

[0006] The MABR-A1 pool is implanted with a MABR membrane filler treatment unit, which is mainly composed of a MABR membrane assembly, a water treatment combined filler, a membrane support, an air supply branch pipe and a bottom aeration pipe;

[0007] The O pool is provided with a filler processing unit, which is mainly composed of a water treatment composite filler, a filler rack, a bottom aeration pipe and a bottom aerator;

[0008] The MABR-A2 pool is implanted with a MABR membrane treatment unit, which is mainly composed of a MABR membrane assembly, a membrane support and a gas supply branch pipe;

[0009] The MBBR-O pool is implanted with an MBBR treatment unit, which is mainly composed of MBBR filler, bottom aeration pipe and bottom aerator;

[0010] An inclined plate sedimentation area and a sludge outlet are arranged in the sedimentation tank, and the remaining sludge is discharged through the sludge outlet.

[0011] Preferably, the anaerobic A tank is provided with hydraulic flow promoters, the number of which is more than 2.

[0012] Preferably, the water inlet flow rate of the first water inlet accounts for 70% to 80% of the total water inlet flow rate, and the water inlet flow rate of the second water inlet accounts for 20% to 30% of the total water inlet flow rate.

[0013] Preferably, the water treatment composite filler in the MABR membrane filler treatment unit is installed between the MABR membrane modules, and the water volume ratio between the MABR membrane modules and the water treatment composite filler is 1:5 to 1:10.

[0014] Preferably, the filling ratio of the filler water treatment unit in the O pool is 1 / 2 to 2 / 3.

[0015] Preferably, the number of MABR membrane treatment units in the MABR-A2 pool is 4 or more.

[0016] Preferably, the filling ratio of MBBR filler in the MBBR-O pool is 2 / 3.

[0017] The utility model has the advantages of no need for nitrification liquid reflux, no need for sludge reflux, good treatment effect, little or no external carbon source addition, and low operating cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attached Figure 1 It is a schematic diagram of the process flow of the utility model.

[0019] Attached Figure 2 It is a schematic diagram of the facade process structure of the utility model.

[0020] In the figure: 101, first water inlet, 102, second water inlet, 2, anaerobic A tank, 201, hydraulic flow promoter, 301, gas supply equipment, 302, valve, 303, gas supply pipeline, 4, MABR-A1 tank, 401, MABR membrane assembly, 402, water treatment combined filler, 403, gas supply branch pipe, 404, bottom aeration pipe, 5, O tank, 501, filler rack, 502, bottom aerator, 6, MABR-A2 tank, 7, MBBR-O tank, 701, MBBR filler, 8, sedimentation tank, 801, inclined plate sedimentation area, 802, sludge outlet, 9, deep sedimentation tank, 10, water outlet. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects of the utility model easy to understand, please refer to Figure 1-Figure 2 , the utility model is further explained below in conjunction with specific implementation methods.

[0022] A sewage treatment device with multiple water inlet points is characterized in that it mainly includes a water inlet, an anaerobic A pool 2, a MABR-A1 pool 4, an O pool 5, a MABR-A2 pool 6, an MBBR-O pool 7, a sedimentation pool 8, a deep treatment pool 9, a water outlet 10 and an air supply system, wherein two water inlet points are arranged, a first water inlet 101 is arranged at the front end of the anaerobic A pool 2, and a second water inlet 102 is arranged at the front end of the MABR-A2 pool 6. The anaerobic A pool 2, the MABR-A1 pool 4, the O pool 5, the MABR-A2 pool 6 and the MBBR-O pool 7 are connected in sequence, the effluent of the MBBR-O pool 7 enters the sedimentation pool 8, and the water after sedimentation enters the deep treatment pool 9. The deep treatment pool 9 adopts upper water inlet and lower water outlet, and the water outlet 10 is arranged at the bottom of the end of the deep sedimentation pool 9. The air supply system is mainly composed of an air supply device 301, an air supply pipe 303 and a valve 302, and the air supply system supplies air to the MABR-A1 pool 4, the O pool 5, the MABR-A2 pool 6 and the MBBR-O pool 7 respectively. BR-O pool 7 is gas-supplied; MABR-A1 pool 4 is implanted with MABR membrane filler treatment unit, which is mainly composed of MABR membrane assembly 401, water treatment composite filler 402, membrane support, air supply branch pipe 403 and bottom aeration pipe 404; O pool 5 is provided with filler treatment unit, which is mainly composed of water treatment composite filler 402, filler frame 501, bottom aeration pipe 404 and bottom aerator 502; MABR-A2 pool 6 is implanted with MABR membrane treatment unit, which is mainly composed of MABR membrane assembly 401, membrane support and air supply branch pipe 403; MBBR-O pool 7 is implanted with MBBR treatment unit, which is mainly composed of MBBR filler 701, bottom aeration pipe 404 and bottom aerator 502; inclined plate sedimentation area 801 and sludge outlet 802 are arranged in sedimentation tank 8, and residual sludge is discharged through sludge outlet 802.

[0023] Example 1: A sewage treatment project with a sewage treatment capacity of 500m 3 / d, the influent is pretreated by means of a screen and a primary sedimentation tank, and the pretreated sewage enters the device from the first water inlet and the second water inlet respectively, wherein the water inlet volume of the first water inlet is 80% of the total water inlet volume, and the water inlet volume of the second water inlet is 20% of the total water inlet volume.

[0024] According to the above settings, a first water inlet 101 is set at the front end of the anaerobic A pool 2, a second water inlet 102 is set at the front end of the MABR-A2 pool 6, and 4 hydraulic flow pushers are set in the anaerobic A pool; the anaerobic A pool 2, the MABR-A1 pool 4, the O pool 5, the MABR-A2 pool 6 and the MBBR-O pool 7 are connected in series in sequence, wherein 10 groups of MABR membrane filler treatment units are set in the MABR-A1 pool 4, and each MABR membrane filler treatment unit contains 20 MABR membrane modules and 160 water treatment combined fillers; the filling ratio of the filler water treatment unit in the O pool 5 is set to 2 / 3; 25 groups of MABR membrane treatment units are arranged in the MABR-A2 pool 6, and each MABR membrane treatment unit includes 10 MABR membrane modules; the filling ratio of the MBBR filler 701 in the MBBR-O pool 7 is 2 / 3; the MBBR filler 701 is partially intercepted by a dense mesh, and the MBBR filler 701 is not arranged at the end of the MBBR-O pool; the sedimentation tank 8 is provided with an inclined plate sedimentation area 801, and the inclined plate is installed at an angle of 60°; the filler used in the deep treatment pool 9 is a granular activated carbon filler, and the particle size gradually decreases from top to bottom, and the outlet 10 is arranged at the bottom of the end of the deep sedimentation tank 9.

[0025] After the above steps, the treated water can meet the effluent water quality requirements.

[0026] The above embodiments are only for explaining the technical concept and features of the utility model, and their purpose is to enable ordinary technicians in the field to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and concept of the utility model within the technical scope of the utility model, which should be covered by the protection scope of the utility model.

Claims

1. A sewage treatment device with multiple water inlet points, characterized in that: It mainly includes water inlet, anaerobic A tank, MABR-A1 tank, O tank, MABR-A2 tank, MBBR-O tank, sedimentation tank, deep treatment tank, water outlet and gas supply system. Two water inlet points are set. The first water inlet is set at the front end of the anaerobic A tank, and the second water inlet is set at the front end of the MABR-A2 tank. The anaerobic A tank, MABR-A1 tank, O tank, MABR-A2 tank and MBBR-O tank are connected in sequence. The effluent of the MBBR-O tank enters the sedimentation tank, and the water after sedimentation enters the deep treatment tank. The deep treatment tank adopts upper water inlet and lower water outlet. The water outlet is set at the bottom of the deep sedimentation tank. The gas supply system is mainly composed of gas supply equipment, gas supply pipes and valves. The gas supply system supplies gas to the MABR-A1 tank, O tank, MABR-A2 tank and MBBR-O tank respectively. The MABR-A1 pool is implanted with a MABR membrane filler treatment unit, which is mainly composed of a MABR membrane assembly, a water treatment combined filler, a membrane support, an air supply branch pipe and a bottom aeration pipe; The O pool is provided with a filler processing unit, which is mainly composed of a water treatment composite filler, a filler rack, a bottom aeration pipe and a bottom aerator; The MABR-A2 pool is implanted with a MABR membrane treatment unit, which is mainly composed of a MABR membrane assembly, a membrane support and a gas supply branch pipe; The MBBR-O pool is implanted with an MBBR treatment unit, which is mainly composed of MBBR filler, bottom aeration pipe and bottom aerator; An inclined plate sedimentation area and a sludge outlet are arranged in the sedimentation tank, and the remaining sludge is discharged through the sludge outlet.

2. The sewage treatment device with multiple water inlets according to claim 1 is characterized in that: The anaerobic A tank is provided with hydraulic flow promoters, the number of which is more than 2.

3. The sewage treatment device with multiple water inlets according to claim 1 is characterized in that: The water inlet flow rate of the first water inlet accounts for 70% to 80% of the total water inlet flow rate, and the water inlet flow rate of the second water inlet accounts for 20% to 30% of the total water inlet flow rate.

4. The sewage treatment device with multiple water inlets according to claim 1, characterized in that: The water treatment composite filler in the MABR membrane filler treatment unit is installed between the MABR membrane modules, and the water volume ratio between the MABR membrane modules and the water treatment composite filler is 1:5-1:

10.

5. The sewage treatment device with multiple water inlet points according to claim 1 is characterized in that: The filling ratio of the filler water treatment unit in the O pool is 1 / 2 to 2 / 3.

6. The sewage treatment device with multiple water inlet points according to claim 1, characterized in that: The number of MABR membrane treatment units in the MABR-A2 pool is more than 4 groups.

7. The sewage treatment device with multiple water inlets according to claim 1, characterized in that: The filling ratio of MBBR filler in the MBBR-O pool is 2 / 3.

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