CN212102468U - Sewage treatment system for enhancing efficient utilization of raw water carbon source - Google Patents
Sewage treatment system for enhancing efficient utilization of raw water carbon source Download PDFInfo
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Abstract
The utility model discloses a sewage treatment system for strengthening high-efficiency utilization of raw water carbon source, which belongs to the technical field of water treatment. The system comprises a pretreatment system, a preposed super-efficient separation system, a carbon source recovery system, a pure membrane MBBR biochemical system, a postposition super-efficient separation system and a sludge treatment system; firstly, removing waste residues and sand in sewage through a pretreatment system, and enabling the pretreated sewage to enter a preposed super-efficient separation system to intensively remove most of non-soluble pollutants such as COD, TP, TN and SS; then, hydrolyzing and fermenting the sludge generated by the preposed super-efficient separation process through a carbon source recovery system, and extracting a dissolved high-quality carbon source for denitrification of a subsequent biochemical system; biochemical system by pure membrane MBBRFor soluble COD and NH3Performing biochemical treatment on the-N and the TN, and then entering a post-positioned super-efficient separation system. The utility model discloses system and technology can make out water and can stably reach accurate earth's surface IV or accurate earth's surface III class water standard.
Description
Technical Field
The utility model belongs to the technical field of water treatment, concretely relates to strengthen sewage treatment system of raw water carbon source high-efficient utilization.
Background
With the development of industry and agriculture and the continuous acceleration of urbanization, the water environment situation in China is getting more severe, and the water environment situation is concentrated on two layers of less water and water pollution. The pollution of surface water, underground water and drinking water also threatens the human health while restricting the development and progress of the economy and society. Surface water and underground water in China are polluted to different degrees and are influenced by the pollution of the surface water and the underground water, the phenomenon that pollutants exceed standards also exists in a drinking water source area, and the current situation of water pollution is not optimistic. Water conservation and pollution treatment have become common social consensus and are more and more attracting attention of people.
In order to meet the primary A emission standard of the existing pollutant emission standard of urban sewage treatment plants (GB 18918-2002) and even the quasi-IV and quasi-III water emission standards of certain economically developed areas which are strict with the primary A, the upgrading and modifying idea of the old water plant is that on the basis of the traditional sewage treatment system (pretreatment, biochemical treatment, secondary sedimentation tank and disinfection discharge), the advanced treatment process is added after the IFAS process/secondary sedimentation tank is embedded in the biochemical section: such as a denitrification deep bed filter, a high-density sedimentation tank, a magnetic coagulation sedimentation tank, a loaded micro-sand sedimentation tank, a turntable filter and the like; the process route of the newly-built water plant is approximately the same as the upgrading and transformation idea of the old plant. The traditional process route has the defects of low utilization rate of carbon sources, large occupied area, high sludge production and the like, and a large amount of carbon sources need to be supplemented to meet the standard of TN.
The study of Liu Zhi Xiao et al (hydrolysis characteristics of sludge as carbon source in sewage plant and process selection [ J ]. China wastewater treatment 2011, 27(22):30-34) shows that: the primary sludge and the activated sludge can generate VFAs with higher content, so that an 'internal carbon source' of a sewage plant is fully excavated, the VFAs are generated by hydrolyzing the sludge, the phosphorus and nitrogen removal efficiency can be effectively improved, the addition of an external carbon source is reduced, the sludge yield of the sewage plant can be reduced, and the method is a sustainable recycling technology. Muvanzine et al (research on hydrolysis acid production characteristics of non-soluble organic matters in different types of sludge [ J ]. environmental pollution and prevention, 2019,3(41): 283-: compared with primary sludge and excess sludge, the flocculation sludge has optimal hydrolytic acidification performance, increases the stability of the biological dephosphorization and denitrification process, and is an effective measure for solving the problem of insufficient organic matters which are easy to biodegrade.
With the gradual increase of the water consumption of residents, some water plants cannot bear overload operation, so that both the upgrading and the capacity expansion are needed, and under the condition, the disadvantages of the traditional process are gradually shown, and the main limiting factors are that the land resource is insufficient, the adding amount of an external carbon source is high, and the like. Therefore, the development of a sewage treatment system with high integration, low energy consumption, land occupation saving and stable treatment effect is particularly urgent.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem that area is big, the energy consumption is high that sewage treatment system exists among the prior art, the utility model aims to provide an strengthen sewage treatment system that raw water carbon source high-efficient was utilized, it is through each system of integration, saved area, the energy consumption low, and the treatment effect good, can stably reach accurate IV or accurate III class water discharge standard.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a sewage treatment system for enhancing the high-efficiency utilization of raw water carbon sources comprises a pretreatment system, a front-mounted super-efficient separation system, a carbon source recovery system, a pure membrane MBBR biochemical system, a rear-mounted super-efficient separation system and a sludge treatment system;
the pretreatment system is positioned at the front end of the whole sewage treatment system and is used for removing waste residues and waste sands in the wastewater;
the pre-positioned super-efficient separation system is positioned behind the pretreatment system and comprises a first tank body, a second tank body, a third tank body and a sedimentation tank which are sequentially arranged side by side, the adjacent tank bodies are communicated, a PAC dosing device is connected above the first tank body, PAC is dosed into the first tank body through the PAC dosing device, a magnetic separator is connected above the second tank body, a magnetic seed sieve is dosed into the second tank body through the magnetic separator, a PAM dosing device is connected above the third tank body, and PAM is dosed into the third tank body through the PAM dosing device; the bottom of the sedimentation tank is connected with two branch pipelines which are a first branch pipeline and a second branch pipeline respectively, the other end of the first branch pipeline is communicated with the second tank body, and a return sludge pump is arranged on the first branch pipeline; the other end of the second branch pipeline is connected to the magnetic separator, a residual sludge pump and a high-speed shearing machine are sequentially connected to the second branch pipeline, and the separated sludge enters a carbon source recovery system;
the carbon source recovery system is used for hydrolyzing and fermenting the generated sludge, extracting dissolved high-quality carbon sources in the sludge and supplementing carbon sources required by denitrification for the pure membrane MBBR biochemical system;
the pure membrane MBBR biochemical system is positioned between the front-mounted super-efficient separation system and the rear-mounted super-efficient separation system and is used for treating soluble COD and NH3Performing biochemical treatment on-N and TN;
the structure of the post-positioned super-effective separation system is the same as that of the pre-positioned super-effective separation system, the sewage treated by the pure membrane MBBR biochemical system enters the post-positioned super-effective separation system for further treatment, and the obtained sludge flows into the sludge treatment system or the carbon source recovery system through corresponding pipelines.
As a preferred scheme of the utility model, stirrers are arranged in the first tank body, the second tank body and the third tank body; and a mud scraper is arranged in the sedimentation tank, the mud scraper is close to the bottom of the sedimentation tank, and the middle upper part of the sedimentation tank is filled with an inclined tube filler.
As another preferred scheme of the utility model, pure membrane MBBR biochemical system including the fourth cell body, fifth cell body, sixth cell body and the seventh cell body that set gradually side by side, keep the intercommunication between the adjacent cell body, be provided with the suspension carrier in every cell body, wherein, be provided with the agitator in fourth cell body and the sixth cell body, be provided with aeration equipment in fifth cell body and the seventh cell body.
Further preferably, the aeration device comprises an aeration pipe, and the aeration pipe is paved at the bottoms of the fifth pool body and the seventh pool body.
Preferably, separating walls are arranged between the first tank body and the second tank body, between the second tank body and the third tank body, and between the third tank body and the sedimentation tank, a water passing port is arranged on each separating wall, and the adjacent tank bodies are communicated through the water passing ports.
Further preferably, the particle size of the optimal sieve magnetic seeds in the preposed super-efficient separation system is 80-200 mu m, and the adding amount of the optimal sieve magnetic seeds is 8-12 g/L.
Preferably, the filling rate of the suspension carrier in the fourth pool body, the fifth pool body, the sixth pool body and the seventh pool body is 15-70%, the suspension carrier adopts a columnar carrier made of high-density polyethylene, and the specific surface area is 450-6000m2/m3。
Further preferably, the particle size of the optimal sieve magnetic seeds in the post-positioned super-efficient separation system is 40-120 mu m, and the initial adding amount of the optimal sieve magnetic seeds is 8-10 g/L.
Compared with the prior art, the utility model discloses following beneficial technological effect has been brought:
(1) the utility model discloses strengthen sewage treatment system that raw water carbon source high efficiency utilized, it adopts leading super-effective separation system to strengthen getting rid of pollutants such as most non-dissolubility COD, TP, TN and SS, provides good condition for biochemical treatment, reduces biochemical treatment's load, improves biochemical reaction efficiency; and pollutants such as SS and the like contained in the fallen biological membrane generated by the TP and MBBR processes are further removed in an enhanced manner through a rear-mounted super-efficient separation system.
(2) The sludge generated by the preposed super-efficient separation passes through a carbon source recovery system, so that the utilization rate of a carbon source is improved, and the treatment cost is saved; by adopting the combined process, SS, TP, COD and NH are treated3The enhanced removal of pollutants such as-N, TN and the like has good treatment effect and can stably reach the standard of quasi IV or quasi III water discharge;
(3) the process combination breaks through the process route of the traditional sewage treatment technology and provides a new idea for the sewage treatment industry;
(4) the biochemical section adopts an MBBR process, and a secondary sedimentation tank module is not required to be arranged subsequently, so that the floor area and the civil engineering cost are greatly saved;
(5) the combination has the advantages of high integration, land occupation saving, low sludge production, good operation effect, convenient management and the like, and has good economic, environmental and social benefits.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
FIG. 1 is a schematic structural view of a sewage treatment system for enhancing the efficient utilization of carbon source in raw water according to the present invention;
FIG. 2 is a flow chart of a wastewater treatment process for enhancing the efficient utilization of carbon source in raw water;
in the figure: 1. PAC dosing device, 2 high-speed shearing machine, 3 magnetic separator, 4 PAM dosing device, 5 stirrer, 6 residual sludge pump, 7 return sludge pump, 8 sludge scraper, 9 inclined tube filler, 10 MBBR stirrer, 11 suspension carrier, 12 aeration device, 13 carbon source recovery system, 14 sludge treatment system.
Detailed Description
The utility model discloses a strengthen sewage treatment system that raw water carbon source high efficiency utilized, for making the utility model discloses an advantage, technical scheme are clearer and more clear, it is right to combine specific embodiment below the utility model discloses do the detailed description.
The PAC mentioned in the utility model refers to polyaluminium chloride, which is a high molecular coagulant, and is an inorganic high molecular water treatment agent with large molecular weight and high charge, which is produced by the bridging effect of hydroxide ions and the polymerization effect of polyvalent anions.
PAM is polyacrylamide, is a linear organic high molecular polymer, is a high molecular water treatment flocculant product, can specially adsorb suspended particles in water, plays a role in bridging among the particles, enables fine particles to form larger flocs, and accelerates the speed of precipitation.
As shown in figure 1, the utility model relates to a sewage treatment system for strengthening high-efficient utilization of raw water carbon source, including pretreatment systems, leading super-efficient piece-rate system, carbon source recovery system, pure membrane MBBR biochemical system, rearmounted super-efficient piece-rate system, carbon source recovery system and sludge treatment system.
The pretreatment system is positioned at the front end of the whole sewage treatment system and is used for removing waste residues and waste sand in the wastewater, the main structure of the pretreatment system is that a coarse grating and a fine grating are adopted for pretreatment, the gaps of the coarse grating are 20-30mm, the gaps of the fine grating are 3-5mm, the wastewater firstly passes through the coarse grating and then passes through the fine grating, and the waste residues and the waste sand in the wastewater are removed through a physical method through pretreatment.
The preposed super-efficient separation system is positioned at the rear part of the pretreatment system and comprises a first tank body, a second tank body, a third tank body and a sedimentation tank which are sequentially arranged side by side, wherein the adjacent tank bodies are communicated, specifically, if a water gap is arranged on a partition wall between the first tank body and the second tank body, between the second tank body and the third tank body, between the third tank body and the sedimentation tank, the communication of the adjacent tank bodies is kept, a PAC (PAC) dosing device 1 is connected above the first tank body, PAC is dosed into the first tank body through the PAC dosing device, and the specific adding amount can be calculated through a metering mode.
All dispose agitator 5 in foretell first cell body, second cell body and the third cell body, the stirring that does not stop through agitator 5 is favorable to with medicament and waste water misce bene, and flocculation with higher speed.
The top of second cell body is connected with magnetic separator 3, through magnetic separator with in the second cell body is added to the excellent sieve magnetic species, the top of third cell body is connected with PAM charge device, through PAM charge device 4 to the third cell body in throw PAM, add PAM and can accelerate the flocculation rate of waste water, the volume of adding of concrete PAM technical staff in the field can rationally judge.
The sedimentation tank, its upper half is the tube-shape, and the latter half is conical, and such structural setting does benefit to deposit downwards and discharges from its bottom, has arranged mud scraper 8 in the sedimentation tank, and the well upper portion of sedimentation tank has arranged the pipe chute and has packed 9.
The bottom of the sedimentation tank is connected with two branch pipelines which are a first branch pipeline and a second branch pipeline respectively, the other end of the first branch pipeline is introduced into the second tank body, and a return sludge pump 7 is arranged on the first branch pipeline; the other end of the second branch pipeline is connected to a magnetic separator, and a residual sludge pump 6, a high-speed shearing machine 2 and the magnetic separator are sequentially connected to the second branch pipeline.
The treatment process of the sewage in the preposed super-efficient separation system comprises the following steps:
after the sewage enters the preposed super-efficient separation system, a flocculating agent (such as PAC), a fine sieve magnetic seed and a coagulant aid (such as PAM) are added, so that the fine sieve magnetic seed and flocs are quickly combined under the action of a stirrer 5, the specific gravity of the flocs is increased, the sedimentation speed of the flocs is accelerated, and the treatment efficiency is improved; the magnetic seed-containing coagulated flocs are pumped from the sedimentation tank to the magnetic seed loading tank through the return sludge pump 7, so that the use efficiency of the medicament is improved, and the stable operation of the system is guaranteed; excess sludge containing magnetic seeds is firstly pumped into a high-speed shearing machine through an excess sludge pump 6, flocs are broken through the high-speed shearing machine, and the magnetic seeds are recycled and used as a bedding.
Then enters a magnetic separator 3, under the action of the high-gradient magnetic separator, the magnetic seeds are effectively recovered and then return to the preposed super-efficient separation system, and the separated residual sludge enters a sludge treatment system 14.
The method is characterized in that most of pollutants such as non-soluble COD, TP, TN and SS are removed in an enhanced mode through the preposed super-efficient separation treatment, sludge generated by the system recovers a dissolved high-quality carbon source through a carbon source recovery system 13 for a subsequent biochemical system, and the sludge generated by the postpositive super-efficient separation is reserved in a pipeline entering the carbon source recovery system, so that whether carbon source recovery is carried out or not can be selected according to actual effects.
In the carbon source recovery system, the sludge generated by the pre-super-effect separation process is subjected to hydrolytic fermentation by the system, the supernatant of the hydrolytic fermentation is recycled into the pre-super-effect separation process again to remove suspended matters, so that a dissolved high-quality carbon source is extracted, and a carbon source required by denitrification is supplemented for a subsequent biochemical system;
pure membrane MBBR biochemical system is located between leading super-efficient piece-rate system and the rearmounted super-efficient piece-rate system, and pure membrane MBBR biochemical system keeps the intercommunication including the fourth cell body, fifth cell body, sixth cell body and the seventh cell body that set gradually side by side between the adjacent cell body, is provided with suspension carrier 11 in every cell body, and wherein, be provided with the agitator in fourth cell body and the sixth cell body, be provided with aeration equipment 12 in fifth cell body and the seventh cell body.
The pure membrane MBBR biochemical system does not need to build a secondary sedimentation tank in the follow-up process, so that the occupied area is greatly saved.
Further preferably, the aeration device 12 comprises an aeration pipe, and the aeration pipe is laid at the bottom of the fifth tank body and the seventh tank body.
The pure membrane MBBR technology enables the suspended carrier in the anoxic zone and the sewage to be fully mixed under the action of the MBBR stirrer 10, thereby creating conditions for pollutant degradation; under the action of the MBBR stirrer, the suspended carriers in the aerobic zone are fully fluidized, the attachment of dominant floras is screened, and the nitrification effect is enhanced. Mainly aiming at soluble COD and NH3The sewage after being treated by the pure membrane MBBR biochemical system enters the post-positioned super-effective separation system for further treatment, the magnetic seeds are combined with flocs under the action of a high-efficiency stirrer by adding a flocculating agent, a fine screening magnetic seed (with the specific gravity of 5-6) and PAM, the specific gravity of the flocs is increased, the sedimentation speed of the coagulated flocs is accelerated, the treatment efficiency is improved, the pollutants such as SS, TP and the like are further removed in a strengthened way, and the obtained sludge flows into a sludge treatment system through a corresponding pipeline.
The following will explain in detail the sewage treatment process for enhancing the high-efficiency utilization of raw water carbon source, which utilizes the sewage treatment system of the present invention.
The method specifically comprises the following steps:
firstly, pretreating wastewater by a pretreatment system, such as a grid and a sand settling tank, and removing waste residues, sand and the like by a physical method;
secondly, pre-super-effect separation, wherein the pretreated wastewater enters a pre-super-effect separation system based on a magnetic loading precipitation technology, a PAC dosing device is connected above the first tank body, and the PAC dosing device is used for adding the wastewater into the first tank bodyPAC, the specific addition amount can be calculated by a metering mode, the magnetic seed of the optimal sieve is added into the second tank body through a magnetic separator, and PAM is added into the third tank body through a PAM dosing device 4; the average surface load of the pre-super-efficient separation process is generally designed to be: 10-30m3/m2H; the particle size of the optimal sieve magnetic seeds added by the preposed super-efficient separation process is 80-200 mu m, and the initial adding amount of the optimal sieve magnetic seeds in the system is 8-12 g/L; the treatment process in the pre-ultra-efficient separation system is as described above;
the method has the advantages that most of pollutants such as non-soluble COD, TP, TN, SS and the like are removed in an enhanced manner through a pre-super-efficient separation process, good conditions are provided for biochemical treatment, the load of the biochemical treatment is reduced, and the biochemical reaction efficiency is improved;
thirdly, recycling a carbon source, namely hydrolyzing and fermenting the sludge generated by the preposed super-efficient separation process through a carbon source recycling system, extracting a dissolved high-quality carbon source, and supplementing a carbon source required by denitrification for a rear pure membrane MBBR biochemical system; a slow stirrer and a muddy water pre-separation device are arranged in the carbon source recovery system, so that the hydrolysis efficiency is improved; the sludge retention time is usually designed to be 1-6 days, the sludge generated by the post-positioned super-efficient separation process is reserved in a pipeline entering a carbon source recovery system, and whether carbon source recovery is carried out or not can be selected according to the actual effect;
step four, MBBR biochemical treatment, wherein the sewage enters a pure membrane MBBR process, the filling rate of the suspended carrier in each tank body is 15-70%, and the suspended carrier mainly aims at soluble COD and NH3Performing biochemical treatment on-N and TN;
and fifthly, post-positioned super-efficient separation treatment and sludge treatment, wherein the sewage after the MBBR biochemical treatment enters a post-positioned super-efficient separation process, the post-positioned super-efficient separation process has an average surface load with a common design value as follows: 15-40m3/m2H; the particle size of the optimal sieve magnetic seeds added by the post-positioned super-efficient separation process is between 40 and 120 mu m, and the initial adding amount of the optimal sieve magnetic seeds in the system is 8 to 10 g/L;
the post-positioned super-efficient separation process is mainly used for further removing pollutants such as SS (suspended solid) contained in a falling biological membrane generated by a TP (TP) and pure membrane MBBR (moving bed biofilm reactor) process in an enhanced manner; treating or utilizing the sludge generated by the two-stage super-effect separation through a sludge treatment system;
and sixthly, post-treatment. According to different water quality conditions, after the water is discharged by the post-positioned super-efficient separation process, proper processes such as disinfection, oxidation and the like are selected for enhanced advanced treatment, and then the water is discharged or recycled after reaching the standard. The effluent can stably reach the standard of quasi-surface IV or quasi-surface III water through the process combination.
The suspension carrier adopts a columnar carrier made of high-density polyethylene, and the specific surface area is 450-6000m2/m3。
The present invention will be described in detail with reference to the following embodiments.
Will the utility model discloses use municipal administration sewage pilot plant.
The pilot plant was designed to have a water flow of 1000m3And d, effluent is designed according to the standard IV discharge standard.
The water quality of inlet and outlet water is detailed in table 1:
TABLE 1
Can know by table 1, adopt the utility model discloses this municipal sewage is handled to combination technology, the play water index can stably reach and can stably reach accurate IV play water emission standard, simultaneously, with not setting up the carbon source recovery system contrast, plus carbon source demand reduces 29%. COD removal rate is 92.9%, NH3The removal rate of-N was 99%, the removal rate of TN was 85.5%, the removal rate of TP was 96.5%, and the removal rate of SS was 97.1%.
Parts not described in the above modes can be realized by adopting or referring to the prior art.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (7)
1. A sewage treatment system for strengthening high-efficiency utilization of raw water carbon source is characterized in that: the system comprises a pretreatment system, a front-mounted super-efficient separation system, a carbon source recovery system, a pure membrane MBBR biochemical system, a rear-mounted super-efficient separation system and a sludge treatment system;
the pretreatment system is positioned at the front end of the whole sewage treatment system and is used for removing waste residues and waste sands in the wastewater;
the pre-positioned super-efficient separation system is positioned behind the pretreatment system and comprises a first tank body, a second tank body, a third tank body and a sedimentation tank which are sequentially arranged side by side, the adjacent tank bodies are communicated, a PAC dosing device is connected above the first tank body, PAC is dosed into the first tank body through the PAC dosing device, a magnetic separator is connected above the second tank body, a magnetic seed sieve is dosed into the second tank body through the magnetic separator, a PAM dosing device is connected above the third tank body, and PAM is dosed into the third tank body through the PAM dosing device; the bottom of the sedimentation tank is connected with two branch pipelines which are a first branch pipeline and a second branch pipeline respectively, the other end of the first branch pipeline is communicated with the second tank body, and a return sludge pump is arranged on the first branch pipeline; the other end of the second branch pipeline is connected to the magnetic separator, a residual sludge pump and a high-speed shearing machine are sequentially connected to the second branch pipeline, and sludge generated after separation enters a carbon source recovery system;
the carbon source recovery system is used for hydrolyzing and fermenting the generated sludge, extracting dissolved high-quality carbon sources in the sludge and supplementing carbon sources required by denitrification for the pure membrane MBBR biochemical system;
the pure membrane MBBR biochemical system is positioned between the front-mounted super-efficient separation system and the rear-mounted super-efficient separation system and is used for treating soluble COD and NH3Performing biochemical treatment on-N and TN;
the structure of the post-positioned super-effective separation system is the same as that of the pre-positioned super-effective separation system, the sewage treated by the pure membrane MBBR biochemical system enters the post-positioned super-effective separation system for further treatment, and the obtained sludge flows into the sludge treatment system or the carbon source recovery system through corresponding pipelines.
2. The wastewater treatment system for enhancing the efficient utilization of raw water carbon source as claimed in claim 1, wherein: stirrers are arranged in the first tank body, the second tank body and the third tank body; and a mud scraper is arranged in the sedimentation tank, the mud scraper is close to the bottom of the sedimentation tank, and the middle upper part of the sedimentation tank is filled with an inclined tube filler.
3. The wastewater treatment system for enhancing the efficient utilization of raw water carbon source as claimed in claim 2, wherein: pure membrane MBBR biochemical system including the fourth cell body, fifth cell body, sixth cell body and the seventh cell body that set gradually side by side, keep the intercommunication between the adjacent cell body, be provided with the suspension carrier in every cell body, wherein, be provided with the agitator in fourth cell body and the sixth cell body, be provided with aeration equipment in fifth cell body and the seventh cell body.
4. The wastewater treatment system for enhancing the efficient utilization of raw water carbon source as claimed in claim 3, wherein: the aeration device comprises an aeration pipe, and the aeration pipe is paved at the bottoms of the fifth pool body and the seventh pool body.
5. The wastewater treatment system for enhancing the efficient utilization of raw water carbon source as claimed in claim 4, wherein: and partition walls are arranged between the first tank body and the second tank body, between the second tank body and the third tank body and between the third tank body and the sedimentation tank, a water passing port is arranged on each partition wall, and the adjacent tank bodies are communicated through the water passing ports.
6. The wastewater treatment system for enhancing the efficient utilization of raw water carbon source as claimed in claim 5, wherein: the particle size of the optimal sieve magnetic seeds in the preposed super-efficient separation system is 80-200 mu m, and the adding amount of the optimal sieve magnetic seeds is 8-12 g/L.
7. The wastewater treatment system for enhancing the efficient utilization of raw water carbon source as claimed in claim 5, wherein: the filling rate of the suspension carriers in the fourth tank body, the fifth tank body, the sixth tank body and the seventh tank body is 15-70%, the suspension carriers adopt columnar carriers made of high-density polyethylene, and the specific surface area is 450-2/m3。
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