CN212610161U - Full-flow treatment system for leachate of waste incineration plant - Google Patents
Full-flow treatment system for leachate of waste incineration plant Download PDFInfo
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Abstract
The great shortcoming of energy consumption, area to MBR technology, the utility model discloses a brand-new incineration plant leachate treatment system has been developed, has adopted membrane aeration biological reaction pond and pipe network formula reverse osmosis unit to combine wherein, and membrane aeration biological reaction pond carries out biochemical treatment, and pipe network formula reverse osmosis unit carries out advanced treatment, and the energy consumption is few, and area is little. The utility model discloses there is not outer sewage of arranging in the entire system flow, and the product water retrieval and utilization is the recirculated cooling water moisturizing as the circulating water in factory, and dross, the mud that produces carry to burning the factory after the dehydration and burn, and the dense pond of system's dense water advances, delivers to the main factory building of burning the factory and dissolves.
Description
Technical Field
The utility model belongs to the technical field of waste water treatment, specifically relate to a full flow processing system of waste incineration factory filtration liquid.
Background
Landfill treatment, incineration power generation treatment and composting treatment in the prior art are the main forms adopted by the end treatment of domestic garbage at the present stage, and the landfill treatment accounts for the highest proportion at present among the treatment modes. However, the landfill mode has the defects of large occupied area and serious aging of percolate, and as time goes on, a lot of cities have fewer and fewer available sites for landfill, so that a lot of governments aim at a burning treatment mode with higher reduction degree. After the domestic garbage is fermented for 5-7 d in the storage pit, water in the garbage is drained, in addition, the garbage is stacked in the garbage storage pit environment, partial organic matters are decomposed to generate partial filtrate, and the partial filtrate form the main part of leachate of an incineration plant.
The percolate from an incineration plant has the characteristics of high organic matter concentration, good biodegradability and the like, and the common treatment process comprises an MBR process, wherein the MBR is generally formed by combining a two-stage nitrification and denitrification biochemical system and an external ultrafiltration membrane system. An aerobic nitrification system in a biochemical system of two-stage nitrification and denitrification needs blast aeration, an air blower belongs to equipment with larger power, and the single-machine operation power is between 45KW and 90 KW. In addition, the MBR system has large sludge production amount, and certain energy consumption and medicament cost are consumed for treating excess sludge. The single power of a circulating water pump in the ultrafiltration system is also more than 45KW, so the MBR process has the main defects of high energy consumption, large occupied area of the MBR system, and omission of the MBR process not only reduces the construction cost but also saves the occupied area.
Among them, the most commonly used treatment methods are anaerobic + MBR (membrane bioreactor) + membrane system, and the most typical processes are anaerobic + MBR + NF (roll-type nanofiltration) + RO (roll-type reverse osmosis) and anaerobic + MBR + DTRO (single-stage disc-tube reverse osmosis). The clear reverse osmosis liquid is reused for production, and the nanofiltration and reverse osmosis concentrated water is reduced by a roll type ultrafiltration material membrane and a disc type reverse osmosis high-pressure membrane and is used for lime pulping and fly ash solidification.
In the incineration plant leachate treatment system, the MBR process has the defects of large energy consumption and large occupied area, so that research and development of a full-flow treatment system and a treatment method with low energy consumption and small occupied area are imperative.
Disclosure of Invention
For solving the big, great shortcoming of area of energy consumption of MBR technology among the prior art, the utility model discloses a brand-new incineration plant leachate treatment system is developed, adopts membrane aeration biological reaction pond (MABR) to carry out biochemical treatment and combines pipe network formula reverse osmosis unit to carry out advanced treatment.
The utility model discloses there is not outer sewage of arranging in the entire system flow, and the product water retrieval and utilization is the recirculated cooling water moisturizing as the circulating water in factory, and dross, the mud that produces carry to burning the factory after the dehydration and burn, and the dense pond of system's dense water advances, delivers to the main factory building of burning the factory and dissolves.
An object of the utility model is to provide a garbage leachate's full flow processing system.
The utility model relates to a full-flow treatment system of garbage penetrating fluid, which comprises a regulating tank, an anaerobic unit, a membrane aeration biological reaction tank, an ultrafiltration device, a nanofiltration device and a pipe network type reverse osmosis device which are connected in sequence; the water inlet of the adjusting tank is provided with a filtering device, the water outlet of the anaerobic unit is connected with a separator, the effluent of the separator enters the membrane aeration biological reaction tank, the outlet of the ultrafiltration device is connected with a nanofiltration device, the nanofiltration device is connected with a reuse water tank, the concentrated water of the nanofiltration device enters a pipe network type reverse osmosis device, and the produced water of the nanofiltration device enters the reuse water tank.
A full processing system of waste incineration plant penetrant, the concrete equipment and the device that adopt in each unit, for example but not limited to equalizing basin, anaerobism unit, membrane aeration biological reaction pond, ultrafiltration device, receive filter equipment, pipe network formula reverse osmosis unit, all can adopt existing relevant equipment and device among the prior art.
The membrane aeration biological reaction tank (MABR) is a membrane-biological treatment coupling reactor and has the characteristics of bubble-free aeration, treatment function active stratification, high oxygen utilization rate, small sludge generation amount, small volatile pollutant gas stripping loss, convenient operation and management and the like. The aeration membrane in the device mainly plays two roles: one is to provide bubble-free oxygen supply and the other is to provide a carrier for the attachment and growth of microorganisms. The aeration membrane divides the wastewater system into a gas phase part and a liquid phase part, oxygen is in the membrane, pollutants are outside the membrane, the oxygen can diffuse in different directions, the oxygen can penetrate through the aeration membrane wall to enter the biological membrane growing on the membrane liquid phase side, meanwhile, wastewater in the liquid phase enters the inner side from the outer side of the biological membrane, and the pollutants are effectively removed under the action of microorganisms on the single biological membrane.
Specifically, the membrane aeration biological reaction tank preferably comprises a membrane component, an air supply device, a water inlet device and a circulating device, wherein the membrane component is arranged in the membrane aeration biological reaction tank, an air outlet of the air supply device is connected with an air inlet end of the membrane component, and the circulating device is used for uniformly mixing reaction liquid at the bottom and the upper part of the membrane aeration biological reaction tank; preferably, the concentration of dissolved oxygen in the membrane aeration biological reaction tank is 0.2-1 mg/L; the nitrogen content in the MABR effluent is very low; meanwhile, the MABR technology also has the function of part of secondary sedimentation tanks, and the civil engineering investment and the occupied area are reduced again.
In the treatment system, a filter is arranged between the membrane aeration biological reaction tank and the ultrafiltration device; the filter between the membrane aeration biological reaction tank and the ultrafiltration device is selected from a ceramic membrane filter, and the ceramic membrane filter with the filtering gap of 1-5 mm is preferably selected as the ceramic membrane filter for removing the residual suspended substances and reducing the risk of pollution of a subsequent membrane system; the effluent of the ceramic membrane filter enters an ultrafiltration device which can almost completely remove suspended matters, colloids, microorganisms and the like; the effluent of the ultrafiltration device is filtered by a filter to further remove pollutants such as suspended matters, colloid and the like and then enters a nanofiltration device, so that the removal rate of organic matters is further enhanced, and the produced water reaches the standard;
in the treatment system, the pipe network type reverse osmosis device is also connected with a concentrated water collecting unit, and the produced water of the pipe network type reverse osmosis device returns to the membrane aeration biological reaction tank;
in the treatment system, the separator connected with the water outlet of the anaerobic unit is a three-phase separator, so that three-phase separation of methane, sludge and effluent is realized; a filtering device can be arranged between the separator and the membrane aeration biological reaction tank to further filter the effluent of the separator;
in the treatment system, the filtering device arranged at the water inlet of the regulating reservoir can be a filtering device which is common in the prior art, and preferably at least one of a filter and a grating machine; filtering the percolate by a filtering device to remove solid suspended matters, larger hairs and other impurities in the percolate; preferably, when the filtering treatment is carried out by using a grating machine, the filtering grating gaps
Then the effluent enters an adjusting tank to adjust the water quality and the water quantity, so as to meet the balance of the water quality and the water quantity of the anaerobic unit;
in the treatment system, a gas collection unit is connected above the anaerobic unit, and further the gas collection unit is connected with a biogas boiler and a torch unit; biogas generated by fermentation of the anaerobic unit enters a biogas boiler through a gas collecting system, the generated heat is supplied to the heat required by the anaerobic unit, self-sufficiency of energy is realized, and the rest biogas enters a torch unit for combustion;
in the treatment system, the anaerobic unit comprises a biochemical water inlet pump and an anaerobic reactor; preferably, the anaerobic unit is a medium-temperature anaerobic unit, the reaction temperature is preferably 30-35 ℃, the liquefaction of organic matters is realized under the action of anaerobic microorganisms, macromolecular substances such as proteins and fibers are converted into micromolecular substances accompanied by methane and CO2The generation of isogas;
in the treatment system, the adjusting tank and the anaerobic unit are both provided with sludge outlets and are connected with a sludge tank, and the sludge tank is connected with a sludge dewatering machine;
among the above-mentioned processing systems, the pipe network type reverse osmosis device (STRO) has open flow channel and unimpeded, non-turbulent water inflow system, has overcome the dirt of traditional reverse osmosis device and has blocked up and the scale deposit. The pipe network type reverse osmosis device (STRO) can reduce the concentration of inorganic salt in the wastewater, remove residual organic matters and ensure that the water quality of the effluent meets the requirement of the quality of reuse water;
specifically, the pipe network type reverse osmosis device comprises a membrane component, a high-pressure pump and the like, and can further improve the water quality and the water recovery rate of the system.
The treatment method adopting the full-flow treatment system for the percolate of the waste incineration plant comprises the steps of filtering and pretreating the percolate, then carrying out biochemical treatment and then carrying out advanced treatment. The method specifically comprises the following steps:
step one, filtering pretreatment: filtering the percolate of the waste incineration plant, and then feeding the effluent into a regulating tank for regulating the water quality and the water quantity to meet the balance of the water quality and the water quantity of an anaerobic unit;
step two, biochemical treatment: lifting the effluent of the regulating reservoir to an anaerobic unit through a water inlet pump, allowing the effluent after anaerobic fermentation to flow to a membrane aeration biological reaction tank through a separator, and realizing a nitrification-denitrification process in the membrane aeration biological reaction tank;
step three: deep treatment: and in the second step, the effluent of the membrane aeration biological reaction tank enters an ultrafiltration device after being filtered, then enters a nanofiltration device, the concentrated water of the nanofiltration device enters a pipe network type reverse osmosis device, and the produced water of the nanofiltration device enters a reuse water tank.
In the first step of the treatment method, the filtration treatment is carried out by adopting a grating machine or a filter, so as to remove solid suspended matters, larger hairs and other impurities in the percolate; when the grating machine is used for filtering treatment, the filtering grating gap is preferred
The grating machine of (1);
in the second step of the treatment method, the anaerobic unit is a medium-temperature anaerobic unit, the preferable reaction temperature is 30-35 ℃, the liquefaction of organic matters is realized under the action of anaerobic microorganisms, and macromolecular substances such as proteins and fibers are converted into small molecular substances accompanied by methane and CO2The generation of isogas;
in the second step of the treatment method, the separator is selected from a three-phase separator, so that three-phase separation of methane, sludge and effluent is realized; effluent after anaerobic fermentation automatically flows to a membrane aeration biological reaction tank (MABR) through a three-phase separator, the nitrification and denitrification processes are synchronously realized in the MABR tank, and the nitrogen content in the effluent is very low; meanwhile, the MABR process also has the function of part of secondary sedimentation tanks, so that the civil engineering investment and the occupied area are reduced again;
in the second step, biogas generated by fermentation of the anaerobic unit enters a biogas boiler through a gas collecting system, the generated heat is supplied to heat required by the anaerobic unit, self-sufficiency of energy is realized, and the rest biogas enters a torch unit for combustion;
in the second step, the sludge produced by the regulating tank and the anaerobic unit is discharged to a sludge tank, dehydrated by a sludge dehydrator and then enters an incineration plant for incineration;
in the treatment method, a filter is arranged between the membrane aeration biological reaction tank and the ultrafiltration device, and the filter is selected from ceramic membrane filters, preferably ceramic membrane filters with a filtering gap of 1-5 mm, and is used for removing residual suspended substances and reducing the risk of pollution of a subsequent membrane system;
in the treatment method, the effluent of the ceramic membrane filter enters an ultrafiltration device which can almost completely remove suspended matters, colloids, microorganisms and the like; the effluent of the ultrafiltration device is filtered by a filter to further remove pollutants such as suspended matters, colloid and the like and then enters a nanofiltration device, so that the removal rate of organic matters is further enhanced, and the produced water reaches the standard;
in the treatment method, the produced water of the nanofiltration device enters a reuse water tank to be reused as product water; concentrated water of the nanofiltration device enters a pipe network type reverse osmosis device (STRO) for further treatment, the water yield of the whole system is improved, and the device is provided with an open flow channel and a water inlet system without obstruction and turbulence, so that the pollution blockage and scaling of the traditional reverse osmosis device are overcome; the pipe-network reverse osmosis device (STRO) can reduce the concentration of inorganic salts in the wastewater and further remove the concentration of organic matters in the concentrate, the produced water of the pipe-network reverse osmosis device (STRO) is returned to the MABR tank, and the concentrate is sent to the main plant of the incineration plant for consumption.
The utility model provides a full flow processing system of waste incineration plant filtration liquid has following beneficial effect:
(1) the utility model provides a full-flow treatment system for leachate in a refuse incineration plant, which develops the leachate in the incineration plant and develops the full-flow treatment system with less energy consumption and small occupied area;
(2) compared with the traditional MBR process, the membrane aeration biological reaction tank (MABR) in the full-flow treatment system of the percolate of the refuse incineration plant has the characteristics of no-bubble aeration, treatment of functional active layer, high oxygen utilization rate, less sludge generation amount, small air stripping loss of volatile pollutants, convenient operation and management and the like; compared with the traditional treatment process, the aeration energy consumption can be reduced by 90 percent at most;
(3) in the full-flow treatment system of the percolate of the waste incineration plant, the pipe network type reverse osmosis device (STRO) replaces the traditional reverse osmosis device, and the device has an open flow passage and an unimpeded and turbulence-free water inlet system, thereby overcoming the dirt blockage and scaling of the traditional reverse osmosis device;
(4) the utility model provides a full-flow treatment system for percolate of a waste incineration plant, which has the characteristic of strong load impact resistance and can adapt to the fluctuation of the inflow water quantity and the water quality;
(5) the utility model provides a full flow processing system of waste incineration factory filtration liquid, the marsh gas of production is used for the heating of system self, can realize the energy self-sufficiency, the lowering system running cost.
Drawings
FIG. 1 is a process flow diagram of a full-flow treatment system for waste incineration plant permeate according to the present invention.
Detailed Description
The present invention will be described in detail with reference to the following embodiments, and it should be understood that the following embodiments are only used for further illustration of the present invention and should not be construed as limiting the scope of the present invention, and the modifications and adjustments made by those skilled in the art according to the present invention are not essential to the present invention.
Example 1:
the following description is provided with reference to the accompanying drawings, in which the treatment system of the utility model treats the waste leachate waste water of a certain incineration plant, and the water quality indexes of the waste water are as shown in table 1:
table 1.
As shown in fig. 1, the system for full-flow treatment of landfill leachate according to the present invention comprises a regulating tank, an anaerobic unit, a membrane aeration biological reaction tank, an ultrafiltration device, a nanofiltration device, and a pipe network type reverse osmosis device, which are connected in sequence; the water inlet of the adjusting tank is provided with a filtering device, the water outlet of the anaerobic unit is connected with a separator, the effluent of the separator enters the membrane aeration biological reaction tank, the outlet of the ultrafiltration device is connected with a nanofiltration device, the nanofiltration device is connected with a reuse water tank, and the concentrated water of the nanofiltration device enters a pipe network type reverse osmosis device for further treatment, so that the water yield of the whole system is improved; and the produced water of the nanofiltration device enters a reuse water tank.
The utility model discloses a full flow processing system of waste incineration plant filtration liquid is as follows to the processing flow of waste incineration plant filtration liquid:
the leachate of the waste incineration plant firstly enters a grating machine or a filter to remove impurities such as solid suspended matters, larger hairs and the like in the leachate, and the effluent of the filter enters a comprehensive wastewater adjusting tank to adjust the water quality and the water quantity.
Then the effluent of the regulating reservoir is lifted to an anaerobic unit by a biochemical water inlet pump, the anaerobic unit is a medium-temperature anaerobic unit, the optimal reaction temperature is 30-35 ℃, the liquefaction of organic matters is realized under the action of anaerobic microorganisms, and macromolecular substances such as protein, fiber and the like are changed into micromolecular substances accompanied by methane and CO2The generation of isogas; effluent after anaerobic fermentation automatically flows to a membrane aeration biological reaction tank (MABR) through a three-phase separator, the nitrification and denitrification processes are synchronously realized in the MABR tank, and the nitrogen content in the effluent is very low; meanwhile, the MABR process has the function of a secondary sedimentation tank, so that the civil engineering investment and the occupied area are reduced again; biogas generated by anaerobic fermentation enters a biogas boiler through a gas collecting system, and generated heat is provided to a medium-temperature anaerobic unit through a heat exchangerThe required heat is used for realizing self-supply of energy; and the residual methane enters a torch unit for combustion.
The MABR comprises a membrane component, an air supply device, a water inlet device and a circulating device, wherein the membrane component is arranged in a membrane aeration biological reaction tank; the air outlet of the air supply device is connected with the air inlet end of the membrane component; the circulating device is used for uniformly mixing the reaction liquid at the bottom and the upper part of the membrane aeration biological reaction tank.
Through the treatment of the equipment, the COD of the wastewater is less than or equal to 540mg/L, and the ammonia nitrogen is less than or equal to 45 mg/L.
Above MABR goes out water and promotes through the pump, gets into the ceramic membrane filter, and the filter gap is 2mm, gets rid of surplus suspended substance, reduces the risk of follow-up membrane system pollution.
The effluent of the ceramic membrane filter enters an ultrafiltration device which can almost completely remove suspended matters, colloid, microorganisms and the like. The effluent of the ultrafiltration device is filtered by a filter to further remove pollutants such as suspended matters, colloid and the like and then enters a nanofiltration device, so that the removal rate of organic matters is further enhanced, and the produced water reaches the standard; the produced water of the nanofiltration device enters a reuse water tank to be reused as product water; concentrated water of the nanofiltration device enters a pipe network type reverse osmosis device (STRO) for further treatment, the water yield of the whole system is improved, and the device is provided with an open flow channel and a water inlet system without obstruction and turbulence, so that the pollution blockage and scaling of the traditional reverse osmosis device are overcome. The pipe-network reverse osmosis device (STRO) can reduce the concentration of inorganic salts in the wastewater and further remove the concentration of organic matters in the concentrate, the produced water of the pipe-network reverse osmosis device (STRO) is returned to the MABR tank, and the concentrate is sent to the main plant of the incineration plant for consumption.
The STRO comprises a membrane component, a high-pressure pump and the like, and can further improve the water quality and the recovery rate of the system produced water;
the effluent quality of the full-flow treatment system for the percolate of the waste incineration plant is as follows: COD is less than or equal to 60mg/L, ammonia nitrogen is less than or equal to 1mg/L, turbidity is less than or equal to 0.1NTU, pH value is 7.0-7.5, and effluent after leachate treatment reaches the water quality standard (see Table 1) for make-up water of an open circulating cooling water system in the quality of municipal sewage recycling industrial water (GB/T19923-2005).
Example 2:
the following description is provided with reference to the accompanying drawings to illustrate the condition of the treatment system for treating the waste leachate of a certain incineration plant, and the water quality indexes are as shown in table 2:
TABLE 2
| Serial number | Item | Unit of | Index of leachate inflow in incineration plant |
| 1 | pH | — | 4.0-6.3 |
| 2 | SS | mg/L | 15000 |
| 3 | CODcr | mg/L | 60000 |
| 4 | BOD5 | mg/L | 35000 |
| 5 | Ammonia nitrogen | mg/L | 2500 |
| 6 | Total nitrogen | mg/L | 3000 |
| 7 | TDS | mg/L | 12500 |
| 8 | Chloride ion | mg/L | 3750 |
As shown in fig. 1, the system for full-flow treatment of landfill leachate according to the present invention comprises a regulating tank, an anaerobic unit, a membrane aeration biological reaction tank, an ultrafiltration device, a nanofiltration device, and a pipe network type reverse osmosis device, which are connected in sequence; the water inlet of the adjusting tank is provided with a filtering device, the water outlet of the anaerobic unit is connected with a separator, the effluent of the separator enters the membrane aeration biological reaction tank, the outlet of the ultrafiltration device is connected with a nanofiltration device, the nanofiltration device is connected with a reuse water tank, and the concentrated water of the nanofiltration device enters a pipe network type reverse osmosis device for further treatment, so that the water yield of the whole system is improved; and the produced water of the nanofiltration device enters a reuse water tank.
The utility model discloses a full flow processing system of waste incineration plant filtration liquid is as follows to the processing flow of waste incineration plant filtration liquid:
the leachate of the waste incineration plant firstly enters a grating machine or a filter to remove impurities such as solid suspended matters, larger hairs and the like in the leachate, and the effluent of the filter enters a comprehensive wastewater adjusting tank to adjust the water quality and the water quantity. Through the above treatment, the adjusting tank produces water: COD is less than or equal to 56000 mg/L.
The effluent of the regulating reservoir is lifted to an anaerobic unit by a biochemical water inlet pump, the anaerobic unit is a medium-temperature anaerobic unit, the optimal reaction temperature is 32 ℃, the liquefaction of organic matters is realized under the action of anaerobic microorganisms, and macromolecular substances such as protein, fiber and the like are changed into micromolecular substances accompanied by methane and CO2The generation of isogas; effluent after anaerobic fermentation automatically flows to a membrane aeration biological reaction tank (MABR) through a three-phase separator, the nitrification and denitrification processes are synchronously realized in the MABR tank, and the nitrogen content in the effluent is very low; meanwhile, the MABR process has the function of a secondary sedimentation tank, so that the civil engineering investment and the occupied area are reduced again; biogas generated by anaerobic fermentation enters a biogas boiler through a gas collecting system, and the generated heat provides heat required by the medium-temperature anaerobic unit through a heat exchanger, so that self-sufficiency of energy is realized; and the residual methane enters a torch unit for combustion.
The MABR comprises a membrane component, an air supply device, a water inlet device and a circulating device, wherein the membrane component is arranged in a membrane aeration biological reaction tank; the air outlet of the air supply device is connected with the air inlet end of the membrane component; the circulating device is used for uniformly mixing the reaction liquid at the bottom and the upper part of the membrane aeration biological reaction tank.
Through the treatment of the equipment, the COD of the wastewater is less than or equal to 500mg/L, and the ammonia nitrogen is less than or equal to 10 mg/L.
The effluent of the MABR is lifted by a pump, enters a ceramic membrane filter and enters a filtering gap
And residual suspended substances are removed, and the risk of pollution of a subsequent membrane system is reduced.
The effluent of the ceramic membrane filter enters an ultrafiltration device which can almost completely remove suspended matters, colloids, microorganisms and the like. The effluent of the ultrafiltration device is filtered by a filter to further remove pollutants such as suspended matters, colloid and the like and then enters a nanofiltration device, so that the removal rate of organic matters is further enhanced, and the produced water reaches the standard; the produced water of the nanofiltration device enters a reuse water tank to be reused as product water; concentrated water of the nanofiltration device enters a pipe network type reverse osmosis device (STRO) for further treatment, the water yield of the whole system is improved, and the device is provided with an open flow channel and a water inlet system without obstruction and turbulence, so that the pollution blockage and scaling of the traditional reverse osmosis device are overcome. The pipe-network reverse osmosis device (STRO) can reduce the concentration of inorganic salts in the wastewater and further remove the concentration of organic matters in the concentrate, the produced water of the pipe-network reverse osmosis device (STRO) is returned to the MABR tank, and the concentrate is sent to the main plant of the incineration plant for consumption.
The STRO comprises a membrane component, a high-pressure pump and the like, and can further improve the water quality and the recovery rate of the system produced water;
the effluent quality of the full-flow treatment system for the percolate of the waste incineration plant is as follows: COD is less than or equal to 60mg/L, ammonia nitrogen is less than or equal to 5mg/L, turbidity is less than or equal to 0.1NTU, pH value is 7.0-7.5, and effluent after leachate treatment reaches the water quality standard of make-up water for an open circulating cooling water system in the quality of municipal sewage recycling industrial water (GB/T19923-2005).
From this, adopt the utility model provides a full flow processing system of waste incineration plant filtration liquid, the play water after handling can reach open-type recirculated cooling water system make-up water quality standard in the "city sewage regeneration utilizes industrial water quality of water" (GB/T19923-2005), simultaneously, the utility model provides a full flow processing system of waste incineration plant filtration liquid compares with traditional treatment process, and the aeration energy consumption can reduce 90% at most, and the energy consumption is few, area is little, does not have outer sewage of arranging in the entire system flow, and the product water retrieval and utilization is the recirculated cooling water moisturizing as the circulating water in factory district, and dross, the mud of production carry to the incineration plant after the dehydration and burn, and the concentrated water of system advances dense pond, send to the main building of incineration plant and consume, and the energy consumption is few, area is little.
Claims (10)
1. A full-flow treatment system for percolate of a waste incineration plant comprises a regulating tank, an anaerobic unit, a membrane aeration biological reaction tank, an ultrafiltration device, a nanofiltration device and a pipe network type reverse osmosis device which are connected in sequence; the water inlet of the adjusting tank is provided with a filtering device, the water outlet of the anaerobic unit is connected with a separator, the effluent of the separator enters the membrane aeration biological reaction tank, the outlet of the ultrafiltration device is connected with a nanofiltration device, the nanofiltration device is connected with a reuse water tank, the concentrated water of the nanofiltration device enters a pipe network type reverse osmosis device, and the produced water of the nanofiltration device enters the reuse water tank.
2. The treatment system according to claim 1, wherein the membrane aeration biological reaction tank comprises a membrane component, a gas supply device, a water inlet device and a circulating device, the membrane component is arranged in the membrane aeration biological reaction tank, a gas outlet of the gas supply device is connected with a gas inlet end of the membrane component, and the circulating device is used for uniformly mixing reaction liquid at the bottom and the upper part of the membrane aeration biological reaction tank.
3. The treatment system according to claim 1, wherein a filter is connected between the membrane aeration biological reaction tank and the ultrafiltration device.
4. The treatment system as claimed in claim 2, wherein the filter between the membrane-aerated biological reaction tank and the ultrafiltration device is selected from ceramic membrane filters.
5. A treatment system according to claim 1, wherein a concentrate collection unit is further connected to the pipe-grid reverse osmosis apparatus.
6. A treatment system as claimed in claim 1, wherein the produced water of the pipe-grid reverse osmosis apparatus is returned to the membrane-aerated biological reaction tank.
7. The process system of claim 1, wherein the separator is a three-phase separator.
8. The treatment system of claim 1, wherein the filtering device arranged at the water inlet of the regulating reservoir is at least one selected from a filter and a grating machine.
9. The processing system of claim 1,
the anaerobic unit comprises a biochemical water inlet pump and an anaerobic reactor; and/or the presence of a gas in the gas,
the upper part of the anaerobic unit is connected with a gas collecting unit, and the gas collecting unit is connected with a biogas boiler and a torch unit.
10. The treatment system according to claim 1, wherein the conditioning tank and the anaerobic unit are provided with sludge outlets and are connected to a sludge tank, and the sludge tank is connected to a sludge dewatering machine.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113371946A (en) * | 2021-07-12 | 2021-09-10 | 南京弘顺和生物科技有限公司 | Multi-membrane sewage treatment system and method thereof |
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| CN113371946A (en) * | 2021-07-12 | 2021-09-10 | 南京弘顺和生物科技有限公司 | Multi-membrane sewage treatment system and method thereof |
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