CN215209029U - Automatic modularization hospital sewage treatment device - Google Patents
Automatic modularization hospital sewage treatment device Download PDFInfo
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- CN215209029U CN215209029U CN202121399433.0U CN202121399433U CN215209029U CN 215209029 U CN215209029 U CN 215209029U CN 202121399433 U CN202121399433 U CN 202121399433U CN 215209029 U CN215209029 U CN 215209029U
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Abstract
The utility model discloses an automatic modularized hospital sewage treatment device, which is characterized by comprising a septic tank, an adjusting tank, an MBBR biochemical tank, a sedimentation tank, a sludge concentration tank, an air floatation device, a disinfection system and a dechlorination system; the disinfection system comprises a disinfection tank, and the dechlorination system comprises a dechlorination tank; the air floating equipment comprises an air floating fan; the septic tank is communicated with the regulating tank, the regulating tank is communicated with the MBBR biochemical tank, the MBBR biochemical tank is communicated with the sedimentation tank, the sedimentation tank is communicated with the sludge concentration tank, the sedimentation tank is also communicated with the disinfection tank, and the disinfection tank is communicated with the dechlorination tank; the air floating fan is connected with the MBBR biochemical pool; the utility model discloses a sewage equipment can carry out innocent treatment to hospital's sewage, effectual, can discharge to reach standard, do not cause secondary pollution, can regularly quantitative disinfection treatment, the noise is little, non-maintaining, treatment cost are low.
Description
Technical Field
The utility model particularly relates to an automatic modularization hospital sewage treatment device.
Background
The existing hospital sewage treatment generally adopts a powered steel concrete structure pool body, the sewage pool with the steel concrete structure is divided into an adjusting pool, a biochemical pool, a sedimentation pool, a disinfection pool and the like through partition plates, and the defects are that: the steel concrete structure has large floor area, insufficient microbial treatment, no dechlorination treatment of the disinfected sewage and easy secondary pollution, the equipment is arranged in the steel concrete pool, the automation degree is low, the disinfection treatment can not be carried out regularly and quantitatively, the dosage is not easy to control, the waste is serious, the operation cost is high, the labor intensity is high, the sewage treatment effect is poor, and the sewage discharge hardly reaches the discharge standard of the water pollutants of the medical institution in GB18466-2005, namely CODcr, BOD5, NH3N, residual chlorine and the like can not reach the discharge standard.
Currently, for the treatment of hospital sewage, common biological oxidation methods include an activated sludge method, a biological contact oxidation method, a membrane bioreactor method, an aeration biological filter method and the like.
The activated sludge process is the most common conventional process for treating various kinds of sewage. The air blast aeration, the mechanical aeration and the like are utilized to propagate a large amount of microorganisms such as filamentous bacteria, fungi and the like in the sewage, and the microorganisms have the capacity of adsorbing and oxidizing harmful substances in the sewage, so that the COD and the BOD of the sewage are reduced, and the sewage achieves the effect of purifying. Some sewage treatment plants also use a combination of anaerobic and aerobic processes, i.e. anaerobic microbial organisms propagate, nitrify and adsorb harmful substances in the water during the anaerobic process. The disadvantages are that a large amount of activated sludge is generated, the sludge treatment is needed, the treatment process is lengthened, the engineering cost is increased, and secondary pollution to air is caused in the aerobic aeration process. An activated sludge process: has the advantages of strong adaptability to sewage with different water qualities; the disadvantages are poor operation stability, easy sludge expansion and sludge loss, and unsatisfactory separation effect. Is suitable for the hospital sewage treatment project with larger water volume above 2000 beds.
Biological contact oxidation method: the advantages are high anti-impact load capacity and stable operation; the volume load is high, and the occupied area is small; the sludge yield is low; sludge backflow is not needed, and operation management is simple; the disadvantage is that the suspended solids concentration in the water is somewhat higher due to the shedding of the partially detached biofilm. Can be used for sewage treatment projects of large and medium-scale hospitals with more than 1000 beds, and is suitable for the conditions of small field, small reclaimed water amount, large water fluctuation, difficult microorganism culture and the like.
Membrane bioreactor process: the method has the advantages of strong impact load resistance, high and stable effluent quality, effective removal of SS and pathogens, small floor area and low residual sludge yield; the disadvantages are high gas-water ratio, backwashing of the membrane, high energy consumption and high operating cost. Is suitable for sewage treatment projects of medium and small-scale hospitals below 500 beds, and has small hospital area and high water quality requirement.
The aeration biological filter method comprises the following steps: the advantages are good effluent quality, high operation reliability, strong impact load resistance and no sludge bulking problem; the volume is negative and the secondary sedimentation and the sludge backflow are saved, and the occupied area is small; the disadvantages are that the washing needs to be repeated, the operation mode is more complex, and the quantity of the back-flushing water is larger. Is suitable for sewage treatment projects of small-scale hospitals below 300 beds.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned condition, for overcoming prior art's defect, the utility model provides an automatic modular hospital sewage treatment device is applicable to the hospital sewage treatment engineering more than 100 beds.
In order to achieve the above object, the present invention provides the following technical solutions:
an automatic modularized hospital sewage treatment device comprises a septic tank, an adjusting tank, an MBBR biochemical tank, a sedimentation tank, a sludge concentration tank, an air floating device, a disinfection system and a dechlorination system; the disinfection system comprises a disinfection tank, and the dechlorination system comprises a dechlorination tank; the air floating equipment comprises an air floating fan;
the septic tank is communicated with the regulating tank, the regulating tank is communicated with the MBBR biochemical tank, the MBBR biochemical tank is communicated with the sedimentation tank, the sedimentation tank is communicated with the sludge concentration tank, the sedimentation tank is also communicated with the disinfection tank, and the disinfection tank is communicated with the dechlorination tank; the air floating fan is connected with the MBBR biochemical pool;
the septic tank is configured to be capable of carrying out sedimentation deslagging and anaerobic digestion treatment on hospital sewage; the adjusting tank is configured to be capable of carrying out uniform water quantity and water quality on sewage; the MBBR biochemical tank is configured to carry out biochemical treatment on the sewage; the sedimentation tank is configured to enable the sludge to sink and be separated from the clear liquid; the disinfection tank is configured to disinfect and sterilize the sewage; the dechlorination tank is configured to dechlorination the sewage and remove active chlorine in the sewage; the sludge concentration tank is configured to concentrate the sludge and separate the sludge from the clear liquid.
Furthermore, a plurality of fluidized bed biofilm reactors are arranged in the MBBR biochemical tank.
Furthermore, the sedimentation tank adopts a conical sedimentation tank with a sludge sinking inclined plate.
Further, chlorine dioxide powder or sodium hypochlorite solution is adopted in the disinfection tank for disinfection.
Furthermore, the addition amount of the chlorine dioxide is 10-50 mg/L.
Further, in the dechlorination tank, the dechlorination agent is selected from at least one of sodium thiosulfate or sodium sulfite.
Furthermore, a porous carrier filler is arranged in the biofilm reactor, and the porous carrier filler is a PE honeycomb filler or a hydrophilic polyurethane filler.
Further, the specific surface area of the honeycomb filler is more than 800m2/m3。
Further, the porous carrier filler grows to form a composite strain biological membrane comprising aerobic bacteria and anaerobic bacteria, wherein the outermost layer of the filler is the aerobic bacteria, the middle layer of the filler is the facultative bacteria, and the innermost layer of the filler is the anaerobic bacteria.
The utility model has the advantages that:
(1) the shortcoming that exists in to current hospital sewage treatment device and technology, the utility model discloses a modularization equipment treatment facility is septic tank, equalizing basin, biochemical pond, sedimentation tank, disinfection pond, dechlorination pond, sludge thickening pond etc. necessary technology module assembled joint for complete sets, through PLC automatic control, mainly opens according to the liquid level control equalizing basin water pump that intakes and stops, then according to online water quality monitoring, control aeration amount of wind size. The disinfection dosage is according to online flowmeter feedback signal and carries out size control, and the inflow links with disinfection medicament dosage, and dechlorination unit adds the medicine according to online chlorine residue data and puts in, and chlorine residue links with dechlorination medicament, and the system can automatic operation, reaches good treatment effect. The biochemical pool part adopts an MBBR process, does not need to carry out sludge backflow, overcomes the defects that a membrane bioreactor and an aeration biological filter need backwashing and have high energy consumption, has simple process flow, is convenient to operate, reduces the occupied area, is particularly integrated with an air floating fan, and has the characteristics of low noise and no maintenance.
(2) Adopt the utility model discloses a sewage equipment can carry out innocent treatment to hospital's sewage, effectual, can discharge to reach standard, do not cause secondary pollution, can regularly quantitative disinfection treatment, the noise is little, non-maintaining, treatment cost are low.
(3) At present, MBBR is rarely applied to hospital sewage treatment equipment in the industry, and after the MBBR modular assembly equipment is applied to hospital sewage, the equipment can be widely applied due to the characteristics of high pollution treatment load, small occupied area, convenient operation, simple flow and low noise.
(4) The utility model discloses equipment is equipped with the module number of corresponding serial number when dispatching from the factory, and the job site assemble can, effectively shorten construction cycle.
(5) The utility model discloses in, MBBR equipment adopts steel/glass steel material module preparation, reserves connection port between the module, and the building site is connected on the spot, and disinfection, dechlorination signal can be through the online signal feedback control of surplus chlorine, accurate offend medicine.
Drawings
FIG. 1 is a schematic view of the sewage treatment apparatus of the present invention.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings, and it should be noted that the detailed description is only for describing the present invention, and should not be construed as limiting the present invention.
As shown in figure 1, an automatic modularized hospital sewage treatment device comprises a septic tank, an adjusting tank, an MBBR biochemical tank, a sedimentation tank, a sludge concentration tank, an air floatation device, a disinfection system and a dechlorination system; the disinfection system comprises a disinfection tank, and the dechlorination system comprises a dechlorination tank. The air floating equipment comprises an air floating fan.
Septic tank and equalizing basin pass through the pipeline intercommunication, and the equalizing basin passes through the pipeline intercommunication with the biochemical pond of MBBR, and the biochemical pond of MBBR passes through the pipeline intercommunication with the sedimentation tank, and the sedimentation tank passes through the pipeline intercommunication with sludge thickening pond, and the sedimentation tank still passes through the pipeline intercommunication with the disinfection pond, and the disinfection pond passes through the pipeline intercommunication with dechlorination pond. The septic tank is configured to be capable of carrying out sedimentation deslagging and anaerobic digestion treatment on hospital sewage; the adjusting tank is configured to be capable of carrying out uniform water quantity and water quality on sewage; the MBBR biochemical tank is configured to carry out biochemical treatment on the sewage; the sedimentation tank is configured to enable the sludge to sink and be separated from the clear liquid; the disinfection tank is configured to disinfect and sterilize the sewage; the dechlorination tank is configured to dechlorination the sewage and remove active chlorine in the sewage; the sludge concentration tank is configured to concentrate the sludge and separate the sludge from the clear liquid. The biochemical pond bottom of MBBR is equipped with the aerator, the aerator floats the fan with empty and is connected, and empty superficial fan can provide the air to the biochemical pond of MBBR, and the aerator produces tiny bubble and discharges into the aquatic, and the oxygen in the air of being convenient for is dissolved in water. The utility model discloses an empty fan, aerator that floats all be conventional among the prior art, common device, the utility model discloses the structure of the fan, aerator that floats is not improved to the air.
The utility model discloses a modularization equipment processing apparatus, with process module assembled joint such as septic tank, equalizing basin, the biochemical pond of MBBR, sedimentation tank, sludge thickening pond for complete sets, through PLC automatic control, open according to the level control equalizing basin water pump of intaking and stop, then according to online water quality monitoring, control aeration amount of wind size.
The disinfection dosage in the disinfection system is controlled according to the feedback signal of the on-line flowmeter, the water inflow is linked with the disinfection dosage, the dechlorination unit adds the chemicals according to the on-line residual chlorine data and puts in, the residual chlorine dosage is linked with the dechlorination dosage, the system can automatically operate, and a good treatment effect is achieved.
Adopt the utility model discloses an automatic modular hospital sewage treatment device carries out hospital sewage treatment's method, including following step:
1) a septic tank step: conveying the hospital sewage into a septic tank for precipitation and deslagging treatment;
2) a step of adjusting a pool: conveying the sewage obtained in the step 1) into a regulating reservoir, and homogenizing the sewage by a submersible stirrer to homogenize water volume and water quality;
3) biochemical treatment: conveying the sewage subjected to the homogenization treatment in the adjusting tank in the step 2) to an MBBR (moving bed biofilm reactor) biochemical tank, and performing biochemical treatment by using a plurality of fluidized bed biofilm reactors arranged in the biochemical treatment tank; the biofilm filler reacts in the whole space of the biochemical tank under the action of the bottom aerator, wherein a porous carrier filler is arranged in the biofilm reactor, the PE honeycomb filler or hydrophilic polyurethane filler is better for hospital sewage, the filler has much larger film forming amount than other combined fillers, and a composite strain biofilm comprising common aerobic bacteria and anaerobic bacteria is formed on the carrier filler in a growing way, wherein the outermost filler is aerobic bacteria, the middle filler is facultative bacteria, and the innermost filler is anaerobic bacteria.
4) Sludge precipitation and separation: conveying the sewage subjected to biochemical treatment to a conical sedimentation tank (called an inclined plate sedimentation tank) with a sludge sinking inclined plate for sludge sedimentation and layering, wherein the obtained upper layer is clear liquid, and the obtained lower layer is sludge sediment; the inclined plate type sedimentation tank can better realize sludge sinking separation.
5) A chemical disinfection step: conveying the clear liquid in the step 4) to a contact disinfection tank or a chemical disinfection tank, and adding chlorine dioxide powder or 10% sodium hypochlorite solution disinfectant for chemical disinfection; the addition amount of chlorine dioxide can be 10-50mg/L, and in some preferred modes, the addition amount of chlorine dioxide is 30-50 mg/L;
6) dechlorination treatment: dechlorinating the disinfected sewage in a dechlorinating tank by using a dechlorinating agent so as to remove active chlorine in the sewage.
The dosage of the dechlorinating agent is the dosage which ensures that the total residual chlorine is less than or equal to 0.5 mg/L. The dechlorinating agent is at least one selected from sodium thiosulfate and sodium sulfite.
7) A sludge concentration tank step: and (3) regularly disposing the residual sludge in the sedimentation tank, concentrating the residual sludge in the sludge concentration tank for half a month to 3 months according to the amount of the sludge, sterilizing the sludge at the bottom, and pumping the sludge into a tank truck for outward transportation or performing sludge dehydration treatment on the spot for outward transportation.
In some preferred modes, the slag settled at the bottom of the septic tank is removed (e.g., by dredging) periodically (e.g., every 90 days) in step 1); thus being beneficial to the continuous sewage treatment.
In some preferred modes, the time (or average residence time) of each stage of biochemical treatment in step 3) is 3-6 hours, and the treatment time or average residence time depends on the ambient temperature of the biochemical treatment tank, discharge standard and the like.
In some preferred modes, the porous carrier filler arranged in the biofilm reactor in the step 3) is a honeycomb filler made of PE. In some preferred modes, the specific surface area of the filler is more than 800m2/m3。
It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
Claims (9)
1. An automatic modularized hospital sewage treatment device is characterized by comprising a septic tank, an adjusting tank, an MBBR biochemical tank, a sedimentation tank, a sludge concentration tank, an air floatation device, a disinfection system and a dechlorination system; the disinfection system comprises a disinfection tank, and the dechlorination system comprises a dechlorination tank; the air floating equipment comprises an air floating fan;
the septic tank is communicated with the regulating tank, the regulating tank is communicated with the MBBR biochemical tank, the MBBR biochemical tank is communicated with the sedimentation tank, the sedimentation tank is communicated with the sludge concentration tank, the sedimentation tank is also communicated with the disinfection tank, and the disinfection tank is communicated with the dechlorination tank; the air floating fan is connected with the MBBR biochemical pool;
the septic tank is configured to be capable of carrying out sedimentation deslagging and anaerobic digestion treatment on hospital sewage; the adjusting tank is configured to be capable of carrying out uniform water quantity and water quality on sewage; the MBBR biochemical tank is configured to carry out biochemical treatment on the sewage; the sedimentation tank is configured to enable the sludge to sink and be separated from the clear liquid; the disinfection tank is configured to disinfect and sterilize the sewage; the dechlorination tank is configured to dechlorination the sewage and remove active chlorine in the sewage; the sludge concentration tank is configured to concentrate the sludge and separate the sludge from the clear liquid.
2. The automated modular hospital sewage treatment plant of claim 1 wherein a plurality of fluidized bed biofilm reactors are provided in the MBBR biochemical tank.
3. The automatic modular hospital sewage treatment apparatus according to claim 1, wherein the settling tank is a conical settling tank having a sludge sinking inclined plate.
4. The automatic modular hospital sewage treatment apparatus according to claim 1, wherein the disinfection tank is disinfected with chlorine dioxide powder or sodium hypochlorite solution.
5. The automatic modular hospital sewage treatment apparatus according to claim 4, wherein the addition amount of chlorine dioxide is 10-50 mg/L.
6. The automatic modular hospital sewage treatment facility according to claim 1, wherein in the dechlorination tank, the dechlorination agent is at least one selected from sodium thiosulfate and sodium sulfite.
7. The automatic modular hospital sewage treatment plant according to claim 2, characterized in that a porous carrier filler is arranged in said biofilm reactor, said porous carrier filler being a honeycomb filler of PE material or a hydrophilic polyurethane filler.
8. The automated modular hospital sewage treatment plant according to claim 7, characterized in that said honeycomb filler has a specific surface area greater than 800m2/m 3。
9. The automatic modular hospital sewage treatment apparatus of claim 7 wherein the porous carrier packing is grown to form a composite bacterial biofilm comprising aerobic bacteria and anaerobic bacteria, wherein the outermost of the packing is aerobic bacteria, the middle is facultative bacteria, and the innermost is anaerobic bacteria.
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| CN202121399433.0U CN215209029U (en) | 2021-06-23 | 2021-06-23 | Automatic modularization hospital sewage treatment device |
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| CN202121399433.0U CN215209029U (en) | 2021-06-23 | 2021-06-23 | Automatic modularization hospital sewage treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115872558A (en) * | 2022-12-13 | 2023-03-31 | 北京华夏平安净水设备有限公司 | A sewage treatment process for shelter hospitals |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115872558A (en) * | 2022-12-13 | 2023-03-31 | 北京华夏平安净水设备有限公司 | A sewage treatment process for shelter hospitals |
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