CN113429084A - Process for treating and recycling domestic sewage and industrial wastewater in industrial park - Google Patents
Process for treating and recycling domestic sewage and industrial wastewater in industrial park Download PDFInfo
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- CN113429084A CN113429084A CN202110874271.XA CN202110874271A CN113429084A CN 113429084 A CN113429084 A CN 113429084A CN 202110874271 A CN202110874271 A CN 202110874271A CN 113429084 A CN113429084 A CN 113429084A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
Abstract
The invention discloses a process for treating and recycling domestic sewage and industrial wastewater in an industrial park, which relates to the technical field of wastewater treatment and comprises the following steps: collecting wastewater to be treated in advance, and determining the type of the wastewater; the method is characterized in that the wastewater treatment is carried out based on the wastewater category, and the domestic sewage wastewater treatment comprises the following steps: pre-collecting domestic sewage, pretreating the domestic sewage by a septic tank, and then flowing into an adjusting tank; the industrial wastewater treatment comprises the following steps: collecting industrial wastewater in advance and carrying out balanced regulation on water quality, water quantity and water temperature in a collecting tank; the industrial wastewater is pumped to a micro-electrolysis cell by a lift pump, and macromolecules of the wastewater are destroyed by electrolysis. Aiming at the water treatment scheme that the industrial park is not provided with a matched municipal sewage pipe network and the surface water status exceeds the standard, the invention has stable and efficient sewage treatment and low cost, ensures the stable operation of the process under the severe sewage condition, ensures the standard discharge of the effluent, has better and more stable water quality and is more beneficial to the natural environment.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to a process for treating and recycling domestic sewage and industrial wastewater in an industrial park.
Background
The Biological Aerated Filter (BAF) process is commonly used for urban domestic sewage treatment at present. The process has outstanding characteristics and obvious effect. But also has certain process defects, mainly existing in that the removal rate of the total phosphorus is low, and the removal rate is generally between 5 and 15 percent. In order to enhance the removal of total phosphorus, a phosphorus removal agent is mainly added into the filter. However, in actual operation, the filter chamber is easy to block, the backwashing period of the filter chamber is accelerated, and finally the produced water load of the system is reduced.
And a certain amount of domestic sewage and production wastewater are generated in the production process of the park, and if the domestic sewage and the production wastewater are directly discharged without being treated, the pollution to the surrounding environment can be caused.
The invention discloses a retrieval Chinese invention patent CN 106145354A, relating to sewage treatment, in particular to a sewage treatment production process. The method comprises the following steps: the high liquid level of the water inlet pump room is kept, the production equipment runs intermittently, the sludge concentration is controlled, oxygen is dissolved, sludge is discharged, and sand is removed. Can control the salt content and the chloride ion content, can normally produce during the running period, the sudden drop of water and the sudden rise of water, and has lower power consumption and less mud production. But the treatment cost is higher, the adaptability is poorer, and the sewage treatment in different production processes cannot be met.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
Aiming at the problems in the related art, the invention provides a process for treating and recycling domestic sewage and industrial wastewater in an industrial park, which aims to overcome the technical problems in the prior related art.
The technical scheme of the invention is realized as follows:
a process for treating and recycling domestic sewage and industrial wastewater in an industrial park comprises the following steps:
collecting wastewater to be treated in advance, and determining the types of the wastewater, including domestic wastewater and industrial wastewater;
the domestic sewage and wastewater treatment method comprises the following steps:
pre-collecting domestic sewage, pretreating the domestic sewage by a septic tank, and then flowing into an adjusting tank;
discharging the sewage into a physicochemical and biochemical treatment tank after passing through a regulating tank to remove pollutants in the sewage;
further removing organic matters and suspended matters through an MBR membrane biological reaction tank;
the water treated by the MBR membrane biological reaction tank flows into a reuse water tank;
the industrial wastewater treatment comprises the following steps:
collecting industrial wastewater in advance and carrying out balanced regulation on water quality, water quantity and water temperature in a collecting tank;
pumping industrial wastewater into a micro-electrolysis cell by a lift pump, and destroying macromolecules of the wastewater through electrolysis;
then the effluent of the micro-electrolysis tank automatically flows into a high-efficiency reaction sedimentation tank, alkali, coagulant and coagulant aid are added to form large flocs in the industrial wastewater, the industrial wastewater flows into a sedimentation area for solid-liquid separation, the sediment is discharged into a sludge concentration tank, and the supernatant automatically flows into an anaerobic tank;
the industrial wastewater enters an anaerobic tank and an anoxic tank, the effluent from the upper parts of the anaerobic tank and the anoxic tank directly flows into an aerobic tank, and most organic matters in the wastewater are decomposed and adsorbed by aerobic microorganisms;
the effluent of the aerobic tank enters a biological carbon adsorption tank to adsorb residual surfactant in the wastewater;
and the effluent of the biochar adsorption tank flows into a secondary sedimentation tank for solid-liquid separation, sediment is discharged into a sludge concentration tank, supernatant automatically flows into an MBR membrane tank, organic matters of sewage are removed through an MBR membrane biological reaction tank, and the effluent of the MBR membrane tank enters a reuse water tank.
Further, the domestic sewage and industrial wastewater treatment further comprises the following steps:
discharging the residual sewage generated by the MBR membrane biological reaction tank into a sludge concentration tank;
after the sludge in the sludge concentration tank is concentrated, the sludge is pumped to a box type filter press by a sludge pump for sludge dehydration;
and (5) returning the filtrate to the regulating tank, and carrying out dry mud outward.
Further, the industrial wastewater treatment also comprises the following steps:
the industrial wastewater is collected in advance and flows into a collecting tank after passing through a pipe duct, a grating and a sand sediment well and removing large impurities.
Furthermore, a combined fiber filler is arranged in the aerobic tank, and a large number of aerobic microorganisms are attached to the filler under the aerobic condition.
Furthermore, powdered activated carbon is added into the biological carbon adsorption tank to adsorb the wastewater surfactant.
The invention has the beneficial effects that:
the domestic sewage and industrial wastewater treatment and reuse process comprises the steps of collecting the domestic sewage in advance, flowing into an adjusting tank after the domestic sewage is pretreated by a septic tank, discharging into a physicochemical and biochemical treatment tank after the domestic sewage passes through the adjusting tank, removing pollutants in the sewage, further removing organic matters and suspended matters through an MBR membrane biological reaction tank, and enabling the water after the domestic sewage and the industrial wastewater treatment and reuse tank to flow into a reuse water tank; the industrial wastewater treatment comprises the steps of collecting industrial wastewater in advance, carrying out water quality, water quantity and water temperature balance adjustment in a collection tank, pumping the industrial wastewater into a micro-electrolysis tank by a lift pump, and destroying macromolecules of the wastewater through electrolysis; the effluent of the micro-electrolysis tank automatically flows into a high-efficiency reaction sedimentation tank, sediments are discharged into a sludge concentration tank, supernatant automatically flows into an anaerobic tank, the effluent of the upper parts of the anaerobic tank and the anoxic tank directly flows into an aerobic tank, most organic matters in the wastewater are decomposed and adsorbed by aerobic microorganisms, the effluent of the aerobic tank enters a biological carbon adsorption tank, the effluent of the biological carbon adsorption tank flows into a secondary sedimentation tank for solid-liquid separation, the sediments are discharged into the sludge concentration tank, the supernatant automatically flows into an MBR membrane tank, the organic matters in the wastewater are removed through an MBR membrane biological reaction tank, the effluent of the MBR membrane tank enters a reuse tank, the wastewater treatment according to the wastewater category is realized, the wastewater treatment is stable, high-efficiency and low in cost, the stable operation of the process under the severe condition of the wastewater is ensured, the up-to-standard discharge of the effluent is ensured, the water quality is better and more stable, and the natural environment is more benefited.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic flow chart of a process for treating and recycling domestic sewage and industrial wastewater in an industrial park according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
According to the embodiment of the invention, a process for treating and recycling domestic sewage and industrial wastewater in an industrial park is provided.
As shown in fig. 1, the process for treating and recycling domestic sewage and industrial wastewater in an industrial park according to the embodiment of the invention comprises the following steps:
collecting wastewater to be treated in advance, and determining the types of the wastewater, including domestic wastewater and industrial wastewater;
performing wastewater treatment based on the wastewater category, wherein;
the domestic sewage and wastewater treatment method comprises the following steps:
pre-collecting domestic sewage, pretreating the domestic sewage by a septic tank, and then flowing into an adjusting tank;
discharging the sewage into a physicochemical and biochemical treatment tank after passing through a regulating tank to remove pollutants in the sewage;
further removing organic matters and suspended matters through an MBR membrane biological reaction tank;
the water treated by the MBR membrane biological reaction tank flows into a reuse water tank;
the industrial wastewater treatment comprises the following steps:
collecting industrial wastewater in advance and carrying out balanced regulation on water quality, water quantity and water temperature in a collecting tank;
pumping industrial wastewater into a micro-electrolysis cell by a lift pump, and destroying macromolecules of the wastewater through electrolysis;
then the effluent of the micro-electrolysis tank automatically flows into a high-efficiency reaction sedimentation tank, alkali, coagulant and coagulant aid are added to form large flocs in the industrial wastewater, the industrial wastewater flows into a sedimentation area for solid-liquid separation, the sediment is discharged into a sludge concentration tank, and the supernatant automatically flows into an anaerobic tank;
the industrial wastewater enters an anaerobic tank and an anoxic tank, the effluent from the upper parts of the anaerobic tank and the anoxic tank directly flows into an aerobic tank, and most organic matters in the wastewater are decomposed and adsorbed by aerobic microorganisms;
the effluent of the aerobic tank enters a biological carbon adsorption tank to adsorb a wastewater surfactant;
and the effluent of the biochar adsorption tank flows into a secondary sedimentation tank for solid-liquid separation, sediment is discharged into a sludge concentration tank, supernatant automatically flows into an MBR membrane tank, organic matters of sewage are removed through an MBR membrane biological reaction tank, and the effluent of the MBR membrane tank enters a reuse water tank.
Wherein, domestic sewage waste water treatment and industrial wastewater waste water treatment still include following step:
discharging the residual sewage generated by the MBR membrane biological reaction tank into a sludge concentration tank;
after the sludge in the sludge concentration tank is concentrated, the sludge is pumped to a box type filter press by a sludge pump for sludge dehydration;
and (5) returning the filtrate to the regulating tank, and carrying out dry mud outward.
Wherein, the industrial wastewater treatment further comprises the following steps:
the industrial wastewater is collected in advance and flows into a collecting tank after passing through a pipe duct, a grating and a sand sediment well and removing large impurities.
Wherein, the aerobic tank is internally provided with a combined fiber filler, and a large amount of aerobic microorganisms are attached to the filler under the aerobic condition.
Wherein, the powdered activated carbon is added into the biological carbon adsorption tank to adsorb the wastewater surfactant.
By means of the technical scheme, the domestic sewage and the wastewater treatment are carried out on the basis of the wastewater type by pre-collecting the wastewater to be treated and determining the wastewater type, and the domestic sewage and the wastewater treatment comprise that the domestic sewage is pre-collected, flows into an adjusting tank after being pre-treated by a septic tank, is discharged into a physicochemical biochemical treatment tank after passing through the adjusting tank, pollutants in the sewage are removed, organic matters and suspended matters are further removed through an MBR membrane biological reaction tank, and the water after being treated by the MBR membrane biological reaction tank flows into a reuse water tank; the industrial wastewater treatment comprises the steps of collecting industrial wastewater in advance, carrying out water quality, water quantity and water temperature balance adjustment in a collection tank, pumping the industrial wastewater into a micro-electrolysis tank by a lift pump, and destroying macromolecules of the wastewater through electrolysis; then the effluent of the micro-electrolysis tank automatically flows into a high-efficiency reaction sedimentation tank, the sediment is discharged into a sludge concentration tank, the supernatant automatically flows into an anaerobic tank, the effluent from the upper parts of the anaerobic tank and the anoxic tank directly flows into the aerobic tank, most organic matters in the wastewater are decomposed, adsorbed and assimilated by aerobic microorganisms to form organisms, the effluent from the aerobic tank enters a biological carbon adsorption reaction tank, the effluent from the biological carbon adsorption reaction tank flows into a secondary sedimentation tank for solid-liquid separation, sediments are discharged into a sludge concentration tank, and supernatant automatically flows into an MBR membrane tank, and the MBR membrane biological reaction tank is used for removing organic matters in the sewage, the effluent of the MBR membrane tank enters a reuse water tank, the wastewater treatment according to the wastewater category is realized, the sewage treatment is stable and efficient, the cost is low, and the stable operation of the process under the severe condition of sewage is ensured, the standard discharge of the effluent is ensured, the water quality is better and more stable, and the method is more beneficial to the natural environment.
In addition, the domestic sewage treatment process comprises the following specific steps:
domestic sewage produced from each production workshop firstly flows into a domestic sewage treatment station after being pretreated by a septic tank, and the treatment process adopts the following steps: physicochemical treatment, biochemical treatment process and MBR membrane biological reaction tank; the sewage is firstly decomposed by microorganisms to remove pollutants in the sewage, then the organic matters of the sewage are further removed by an MBR membrane biological reaction tank, and the effluent of the MBR membrane tank reaches the quality standard of reuse water.
And residual sewage generated by the system is discharged into a sludge concentration tank, sludge in the sludge concentration tank is concentrated and then pumped into a box type filter press by a sludge pump for sludge dehydration, filtrate flows back to a wastewater adjusting tank, and dry sludge is transported outside.
In addition, the industrial wastewater treatment process specifically includes:
waste water from each production workshop firstly passes through a pipe duct, a grating and a sand sediment well, large sundries are removed and then flow into a collecting tank, and water quality, water quantity and water temperature are balanced and adjusted in the collecting tank;
pumping the wastewater into a micro-electrolysis cell by a lift pump, and destroying macromolecules of the wastewater through electrolysis;
the effluent of the micro-electrolysis tank automatically flows into a high-efficiency reaction sedimentation tank, alkali, coagulant and coagulant aid are added to form large-effect floccules in the wastewater, the wastewater flows into a sedimentation zone to carry out solid-liquid separation, the sediment is discharged into a sludge concentration tank, and the supernatant automatically flows into an anaerobic tank.
The wastewater enters an anaerobic tank and an anoxic tank, macromolecules and organic pollutants which are difficult to biochemically treat, such as difficultly degraded substances, surfactants and the like in the wastewater are subjected to ring opening and chain breaking under the action of anaerobic bacteria or facultative bacteria to be decomposed into micromolecules and substances which are easy to biochemically treat, so that the wastewater is favorable for further treatment, and a part of organic matters are degraded into inorganic micromolecules;
the effluent from the upper parts of the anaerobic tank and the anoxic tank directly flows into the aerobic tank. The aerobic pool is internally provided with a combined fiber filler. Under the aerobic condition, a large amount of aerobic microorganisms are attached to the filler, and most organic matters in the wastewater are decomposed, adsorbed and assimilated by the aerobic microorganisms to form organisms. The biological connection degradation oxidation method is to complete the degradation of organic matters in the wastewater by utilizing the continuous formation and the updating metabolic process of a biological membrane;
adding powdered activated carbon into the biological carbon adsorption tank from the aerobic tank in the reaction to further adsorb the wastewater surfactant;
and (3) enabling the effluent of the reaction tank to flow into a secondary sedimentation tank for solid-liquid separation, discharging sediments into a sludge concentration tank, and enabling supernatant to flow into an MBR membrane tank. Organic matters in the sewage are further removed through an MBR membrane biological reaction tank, and the effluent of the MBR membrane tank reaches the quality standard of reuse water;
after the sludge in the sludge concentration tank of the system is concentrated, the sludge is pumped to a box-type filter press by a sludge pump for sludge dehydration, filtrate flows back to a wastewater adjusting tank, and dry sludge is transported outside.
In addition, for the above process description of the reuse water, specific is: domestic sewage and industrial wastewater generated in the park flow into a reuse water pool after being purified by respective systems, and when the reuse water needs to be reused as cooling water, the hardness of the water needs to be removed by a softening system of the system and then the water is reused as the cooling water; the rest of the reuse water is used for greening, flushing a toilet and cleaning a road surface through a reuse water pump. The industrial wastewater is purified to reach the reuse water standard and is completely reused for greening and cooling water, and does not flow into a toilet for washing the floor.
In addition, for extreme weather reuse water diversion: if the production amount of the reuse water is larger than the recycle amount of the park in extreme weather, the reuse water is transported to an external sewage treatment plant for treatment through the tank car without being discharged outside.
In addition, specifically, as shown in table 1, the quality of the domestic wastewater influent is as follows:
TABLE 1 Life influent water quality meter
| Index (I) | pH | CODcr | BOD5 | SS | NH3-N | Total phosphorus |
| Domestic sewage | 6-9 | 150-300mg/L | 120-200mg/L | 100-200mg/L | 40-60mg/L | 2.5-5mg/L |
In addition, as shown in table 2, the quality of the industrial wastewater influent is as follows:
TABLE 2 Water quality meter for industrial wastewater
| Index (I) | PH | CODcr | SS | Petroleum products | NH3-N |
| Production wastewater | 5～9 | 1000-5000 | 500-1000 | 20-50 | 3-10 |
In addition, as shown in Table 3, the waste water after the purification of the waste water is reused for greening, flushing toilet, cleaning road and supplementing cooling water, and the quality of the reuse water is a stricter value in GB/T18920-2016, quality of municipal wastewater reuse municipal miscellaneous Water and quality of municipal wastewater reuse Industrial Water GB/T19923-2005 as follows:
TABLE 3 Water quality meter
| pH | CODcr | BOD5 | SS | LAS | NH3-N | TDS | DO |
| 6-9 | ≤60 | ≤10 | ≤30 | ≤0.5 | ≤10 | ≤1000 | ≥1.0 |
In summary, according to the above technical scheme of the present invention, the domestic sewage and wastewater treatment includes collecting domestic sewage in advance, flowing into an adjusting tank after the domestic sewage is pretreated by a septic tank, discharging the domestic sewage into a physicochemical biochemical treatment tank after the domestic sewage passes through the adjusting tank, removing pollutants in the sewage, further removing organic matters and suspended matters by an MBR membrane biological reaction tank, and flowing the water after the water is treated by the MBR membrane biological reaction tank into a reuse water tank; the industrial wastewater treatment comprises the steps of collecting industrial wastewater in advance, carrying out water quality, water quantity and water temperature balance adjustment in a collection tank, pumping the industrial wastewater into a micro-electrolysis tank by a lift pump, and destroying macromolecules of the wastewater through electrolysis; then the effluent of the micro-electrolysis tank automatically flows into a high-efficiency reaction sedimentation tank, the sediment is discharged into a sludge concentration tank, the supernatant automatically flows into an anaerobic tank, the effluent from the upper parts of the anaerobic tank and the anoxic tank directly flows into the aerobic tank, most organic matters in the wastewater are decomposed, adsorbed and assimilated by aerobic microorganisms to form organisms, the effluent from the aerobic tank enters a biological carbon adsorption reaction tank, the effluent from the biological carbon adsorption reaction tank flows into a secondary sedimentation tank for solid-liquid separation, sediments are discharged into a sludge concentration tank, and supernatant automatically flows into an MBR membrane tank, and the MBR membrane biological reaction tank is used for removing organic matters in the sewage, the effluent of the MBR membrane tank enters a reuse water tank, the wastewater treatment according to the wastewater category is realized, the sewage treatment is stable and efficient, the cost is low, and the stable operation of the process under the severe condition of sewage is ensured, the standard discharge of the effluent is ensured, the water quality is better and more stable, and the method is more beneficial to the natural environment.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A process for treating and recycling domestic sewage and industrial wastewater in an industrial park is characterized by comprising the following steps:
collecting wastewater to be treated in advance, and determining the types of the wastewater, including domestic wastewater and industrial wastewater;
performing wastewater treatment based on the wastewater category, wherein;
the domestic sewage and wastewater treatment method comprises the following steps:
pre-collecting domestic sewage, pretreating the domestic sewage by a septic tank, and then flowing into an adjusting tank;
discharging the sewage into a physicochemical and biochemical treatment tank after passing through a regulating tank to remove pollutants in the sewage;
further removing organic matters and suspended matters through an MBR membrane biological reaction tank;
the water treated by the MBR membrane biological reaction tank flows into a reuse water tank;
the industrial wastewater treatment comprises the following steps:
collecting industrial wastewater in advance and carrying out balanced regulation on water quality, water quantity and water temperature in a collecting tank;
pumping industrial wastewater into a micro-electrolysis cell by a lift pump, and destroying macromolecules of the wastewater through electrolysis;
then the effluent of the micro-electrolysis tank automatically flows into a high-efficiency reaction sedimentation tank, alkali, coagulant and coagulant aid are added to form large flocs in the industrial wastewater, the industrial wastewater flows into a sedimentation area for solid-liquid separation, the sediment is discharged into a sludge concentration tank, and the supernatant automatically flows into an anaerobic tank;
the industrial wastewater enters an anaerobic tank and an anoxic tank, the effluent from the upper parts of the anaerobic tank and the anoxic tank directly flows into an aerobic tank, and most organic matters in the wastewater are decomposed and adsorbed by aerobic microorganisms;
the effluent of the aerobic tank enters a biological carbon adsorption tank to adsorb residual surfactant in the wastewater;
and the effluent of the biochar adsorption tank flows into a secondary sedimentation tank for solid-liquid separation, sediment is discharged into a sludge concentration tank, supernatant automatically flows into an MBR membrane tank, organic matters of sewage are removed through an MBR membrane biological reaction tank, and the effluent of the MBR membrane tank enters a reuse water tank.
2. The industrial park domestic sewage and industrial wastewater treatment and recycling process of claim 1, wherein the domestic sewage and industrial wastewater treatment further comprises the following steps:
discharging the residual sewage generated by the MBR membrane biological reaction tank into a sludge concentration tank;
after the sludge in the sludge concentration tank is concentrated, the sludge is pumped to a box type filter press by a sludge pump for sludge dehydration;
and (5) returning the filtrate to the regulating tank, and carrying out dry mud outward.
3. The industrial park domestic sewage and industrial wastewater treatment and recycling process according to claim 2, wherein the industrial wastewater treatment further comprises the following steps:
the industrial wastewater is collected in advance and flows into a collecting tank after passing through a pipe duct, a grating and a sand sediment well and removing large impurities.
4. The process for treating and recycling domestic sewage and industrial wastewater of an industrial park as claimed in claim 3, wherein the aerobic tank is internally provided with a combined fiber filler, and a large amount of aerobic microorganisms are attached to the filler under aerobic conditions.
5. The process for treating and recycling domestic sewage and industrial wastewater of an industrial park as claimed in claim 4, wherein powdered activated carbon is added into the biological carbon adsorption tank to adsorb wastewater surfactant.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115353261A (en) * | 2022-10-19 | 2022-11-18 | 威海蓝创环保设备有限公司 | Polyester waste water treatment system |
| CN115353262A (en) * | 2022-10-20 | 2022-11-18 | 威海蓝创环保设备有限公司 | Esterification wastewater treatment process |
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| CN210340609U (en) * | 2019-05-09 | 2020-04-17 | 深圳顺天环保实业有限公司 | Industrial park effluent disposal system |
| CN112321070A (en) * | 2020-10-20 | 2021-02-05 | 南京万瑞环境科技有限公司 | Comprehensive treatment system for production and domestic wastewater |
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2021
- 2021-07-30 CN CN202110874271.XA patent/CN113429084A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109020050A (en) * | 2018-07-11 | 2018-12-18 | 浙江清天地环境工程有限公司 | Corrugated case factory waste water treatment system and method |
| CN210340609U (en) * | 2019-05-09 | 2020-04-17 | 深圳顺天环保实业有限公司 | Industrial park effluent disposal system |
| CN112321070A (en) * | 2020-10-20 | 2021-02-05 | 南京万瑞环境科技有限公司 | Comprehensive treatment system for production and domestic wastewater |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115353261A (en) * | 2022-10-19 | 2022-11-18 | 威海蓝创环保设备有限公司 | Polyester waste water treatment system |
| CN115353262A (en) * | 2022-10-20 | 2022-11-18 | 威海蓝创环保设备有限公司 | Esterification wastewater treatment process |
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