CN112321070A - Comprehensive treatment system for production and domestic wastewater - Google Patents

Comprehensive treatment system for production and domestic wastewater Download PDF

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Publication number
CN112321070A
CN112321070A CN202011122271.6A CN202011122271A CN112321070A CN 112321070 A CN112321070 A CN 112321070A CN 202011122271 A CN202011122271 A CN 202011122271A CN 112321070 A CN112321070 A CN 112321070A
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tank
wastewater
production
water
collecting
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陈文文
马军涛
李伟科
吴海丰
江婷婷
刘薇
冯杰
黄立平
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Nanjing Wanrui Environmental Technology Co Ltd
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Nanjing Wanrui Environmental Technology Co Ltd
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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
    • 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
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • 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
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • 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
    • 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
    • C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
    • 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
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • 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
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • 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
    • 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
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • 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
    • C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56—Macromolecular compounds
    • 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
    • C02F2101/10—Inorganic compounds
    • C02F2101/101—Sulfur compounds
    • 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
    • C02F2101/10—Inorganic compounds
    • C02F2101/105—Phosphorus compounds
    • 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

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

The invention relates to a comprehensive treatment system for production and domestic wastewater, wherein an oily wastewater flow comprises a first collecting tank, a first oil separating tank, a first intermediate water tank, a first coagulation air flotation tank, a production wastewater adjusting tank and a first waste oil collecting barrel, a degreasing wastewater pretreatment flow comprises a second collecting tank, a pH adjusting tank, a second oil separating tank, a first intermediate water tank and a second waste oil collecting barrel, a domestic wastewater pretreatment flow comprises a third collecting tank, a first coagulation sedimentation tank, a second intermediate water tank, a second coagulation air flotation tank and a production wastewater adjusting tank, and a comprehensive wastewater treatment process flow comprises a production wastewater adjusting tank, a micro-electrolysis reaction tank, a second coagulation sedimentation tank, a comprehensive adjusting tank, an anaerobic tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank, a third intermediate water tank and a grid water collecting well. The invention carries out centralized treatment on the production and domestic wastewater which are difficult to treat, introduces the domestic wastewater during the centralized treatment, is beneficial to the operation and debugging of a biochemical system, and meets the recycling requirement after the reclaimed water is subjected to advanced treatment.

Description

Comprehensive treatment system for production and domestic wastewater
Technical Field
The invention relates to the technical field of environmental engineering, in particular to a comprehensive treatment system for production and domestic wastewater.
Background
With the progress of human civilization and the development of socioeconomic performance, human beings have gradually recognized the important significance of environmental protection in promoting social progress and sustainable, stable and harmonious development of economy. The environmental protection work is generally concerned and paid attention to by society, and the construction of a sewage treatment system is a specific action for implementing the work.
The difficult-to-treat production and domestic wastewater has the following characteristics: the wastewater has large water quality fluctuation; the COD concentration in the wastewater is higher; poor biodegradability of wastewater; the difference of the wastewater quality of each process section is large. A specially-established wastewater comprehensive treatment system is required.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a comprehensive treatment system for production and domestic wastewater, which is used for carrying out centralized treatment on the production and domestic wastewater difficult to treat, and introducing the domestic wastewater during the centralized treatment, thereby being beneficial to the operation and debugging of a biochemical system, and the reclaimed water can meet the recycling requirement after being subjected to advanced treatment.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a comprehensive treatment system for production and domestic wastewater comprises an oily wastewater flow, a degreasing wastewater pretreatment flow, a domestic wastewater pretreatment flow, a comprehensive wastewater treatment process flow and a reclaimed water reuse flow;
the oily wastewater flow comprises a first collecting tank, a first oil separation tank, a first intermediate water tank, a first coagulation air flotation tank, a production wastewater adjusting tank and a first waste oil collecting barrel; the method comprises the following steps that oily wastewater enters a first collecting tank, the first collecting tank, a first oil separation tank, a first intermediate water tank, a first coagulation air flotation tank and a production wastewater adjusting tank are sequentially connected, the first coagulation air flotation tank is provided with a first medicine adding system, the first coagulation air flotation tank is connected to a sludge tank, and a first waste oil collecting barrel is used for collecting waste oil from the first oil separation tank;
the degreasing wastewater pretreatment process comprises a second collecting tank, a pH adjusting tank, a second oil separation tank, a first intermediate water tank and a second waste oil collecting barrel, wherein degreasing wastewater enters the second collecting tank, the pH adjusting tank, the second oil separation tank and the first intermediate water tank are sequentially connected, and the pH adjusting tank is provided with a pH adjusting and dosing system; the second waste oil collecting barrel is used for collecting waste oil from the second oil separation tank;
the domestic wastewater pretreatment process comprises a third collecting tank, a first coagulating sedimentation tank, a second intermediate water tank, a second coagulating air-floating tank and a production wastewater adjusting tank, domestic wastewater enters the third collecting tank, the first coagulating sedimentation tank, the second intermediate water tank, the second coagulating air-floating tank and the production wastewater adjusting tank are sequentially connected, the first coagulating sedimentation tank is provided with a second dosing system, and the second coagulating air-floating tank is provided with a third dosing system;
the comprehensive wastewater treatment process flow comprises a production wastewater adjusting tank, a micro-electrolysis reaction tank, a second coagulation sedimentation tank, a comprehensive adjusting tank, an anaerobic tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank, a third intermediate water tank and a grid water collecting well, wherein effluent and all other production wastewater except the production wastewater subjected to the treatment process enter the production wastewater adjusting tank after the treatment of an oily wastewater flow, a degreasing wastewater pretreatment flow and a domestic wastewater pretreatment flow;
the reclaimed water recycling process comprises a third middle water tank, a sand filter tank, a carbon filter tank, a fourth middle water tank, an UF system, a fifth middle water tank, a first-level RO system, a sixth middle water tank, a second-level RO system and a clean water tank, wherein secondary sedimentation tank effluent enters the third middle water tank, the sand filter tank, the carbon filter tank, the fourth middle water tank, the UF system, the fifth middle water tank, the first-level RO system, the sixth middle water tank, the second-level RO system and the clean water tank are sequentially connected, and concentrated water generated by the first-level RO system and the second-level RO system is discharged to an external water discharge port and reaches the standard.
And oil-water separation is carried out in the first oil separation tank to remove floating oil in water, the floating oil flows into the waste oil collecting tank through the floating oil collecting pipe, and the effluent automatically flows into the first middle water tank.
NaOH is firstly added into the first coagulation air floatation tank to adjust the pH value, and then CaCl is added2The demulsifier is used for destroying the structure of emulsified oil in the wastewater so as to facilitate oil-water separation, and then PAC and PAM are sequentially added as a coagulant and a flocculant.
Sequentially adding NaOH and CaCl into a first coagulating sedimentation tank2PAC and PAM, removing most of SO in wastewater4 2-、PO4 3-Partial metal ions and COD, sludge at the bottom of the sedimentation tank automatically flows into the sludge tank, and effluent automatically flows into the second intermediate water tank.
Sequentially adding H into a second coagulation air flotation tank2SO4PAC and PAM, removing metal ions, floating oil, SS and the like in the wastewater, enabling the scum to automatically flow into a sludge tank, and enabling the effluent to automatically flow into a production wastewater adjusting tank.
Adding H into a micro-electrolysis reaction tank2SO4And adjusting pH, converting macromolecular organic matters in the wastewater into micromolecular organic matters by utilizing hydroxyl generated by the primary battery principle of iron and carbon, converting organic matters which are difficult to degrade into organic matters which are easy to degrade, and enabling the effluent to automatically flow into a second coagulation sedimentation tank.
Sequentially adding NaOH and PAM into a second coagulation sedimentation tank to remove most of SS and partial COD in the wastewater, and enabling the effluent to automatically flow into a comprehensive regulation tank; domestic sewage which is removed of large-particle suspended matters and floating matters through a grating is introduced into the comprehensive adjusting tank, the water quality and the water quantity are homogenized, and the effluent pump is lifted to the anaerobic tank.
And removing part of fine SS, colloid and other substances in the wastewater through the adsorption and filtration action of the activated carbon in the carbon filter, and enabling the effluent to enter a fourth intermediate water tank.
And (4) pumping water out of the fourth intermediate water tank to a UF system, further removing colloid, bacteria, SS (suspended substances) and the like in water by utilizing the filtering action of a UF membrane, feeding backwash concentrated water into a production wastewater regulating tank, and feeding the effluent into a fifth intermediate water tank.
A water outlet pump of the fifth intermediate water tank is lifted to the first-stage RO system to remove metal and non-metal ions in the water, and the effluent enters a sixth intermediate water tank; and pumping the intermediate water tank to a secondary RO system.
Compared with the prior art, the invention has the beneficial effects that:
the comprehensive treatment system for the production and domestic wastewater comprises an oily wastewater flow, a degreasing wastewater pretreatment flow, a domestic wastewater pretreatment flow, a comprehensive wastewater treatment process flow and a reclaimed water reuse flow. The construction of the wastewater comprehensive treatment system plays an important role in improving the surrounding environmental quality and improving the living and health level of people around.
Drawings
FIG. 1: the structure of the oily wastewater flow path is shown schematically.
FIG. 2: the structure of the degreasing wastewater pretreatment process is schematically shown.
FIG. 3: the structure schematic diagram of the domestic wastewater pretreatment process.
FIG. 4: the structure schematic diagram of the comprehensive wastewater treatment process flow.
FIG. 5: the structure schematic diagram of the reclaimed water recycling process.
Detailed Description
The present invention will be described in further detail with reference to specific examples. The following examples are intended to illustrate the invention only and are not intended to limit the scope of the invention.
A comprehensive treatment system for production and domestic wastewater comprises an oily wastewater flow, a degreasing wastewater pretreatment flow, a domestic wastewater pretreatment flow, a comprehensive wastewater treatment process flow and a reclaimed water reuse flow;
the oily wastewater flow comprises a first collecting tank, a first oil separation tank, a first intermediate water tank, a first coagulation air flotation tank, a production wastewater adjusting tank and a first waste oil collecting barrel; the method comprises the following steps that oily wastewater enters a first collecting tank, the first collecting tank, a first oil separation tank, a first intermediate water tank, a first coagulation air flotation tank and a production wastewater adjusting tank are sequentially connected, the first coagulation air flotation tank is provided with a first medicine adding system, the first coagulation air flotation tank is connected to a sludge tank, and a first waste oil collecting barrel is used for collecting waste oil from the first oil separation tank;
the degreasing wastewater pretreatment process comprises a second collecting tank, a pH adjusting tank, a second oil separation tank, a first intermediate water tank and a second waste oil collecting barrel, wherein degreasing wastewater enters the second collecting tank, the pH adjusting tank, the second oil separation tank and the first intermediate water tank are sequentially connected, and the pH adjusting tank is provided with a pH adjusting and dosing system; the second waste oil collecting barrel is used for collecting waste oil from the second oil separation tank;
the domestic wastewater pretreatment process comprises a third collecting tank, a first coagulating sedimentation tank, a second intermediate water tank, a second coagulating air-floating tank and a production wastewater adjusting tank, domestic wastewater enters the third collecting tank, the first coagulating sedimentation tank, the second intermediate water tank, the second coagulating air-floating tank and the production wastewater adjusting tank are sequentially connected, the first coagulating sedimentation tank is provided with a second dosing system, and the second coagulating air-floating tank is provided with a third dosing system;
the comprehensive wastewater treatment process flow comprises a production wastewater adjusting tank, a micro-electrolysis reaction tank, a second coagulation sedimentation tank, a comprehensive adjusting tank, an anaerobic tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank, a third intermediate water tank and a grid water collecting well, wherein effluent and all other production wastewater except the production wastewater subjected to the treatment process enter the production wastewater adjusting tank after the treatment of an oily wastewater flow, a degreasing wastewater pretreatment flow and a domestic wastewater pretreatment flow;
the reclaimed water recycling process comprises a third middle water tank, a sand filter tank, a carbon filter tank, a fourth middle water tank, an UF system, a fifth middle water tank, a first-level RO system, a sixth middle water tank, a second-level RO system and a clean water tank, wherein secondary sedimentation tank effluent enters the third middle water tank, the sand filter tank, the carbon filter tank, the fourth middle water tank, the UF system, the fifth middle water tank, the first-level RO system, the sixth middle water tank, the second-level RO system and the clean water tank are sequentially connected, and concentrated water generated by the first-level RO system and the second-level RO system is discharged to an external water discharge port and reaches the standard.
The oily wastewater treatment process comprises the following steps:
collecting the oily wastewater to a first collecting tank, and pumping the oily wastewater to a first oil separation tank by using a water pump; performing oil-water separation in the first oil separation tank to remove floating oil in water, wherein the floating oil flows into the waste oil collection tank through a floating oil collection pipe, and the effluent automatically flows into a first intermediate water tank; the water outlet pump of the first intermediate water tank is lifted to the first coagulation air floatation tank; NaOH is firstly added into the first coagulation air floatation tank to adjust the pH value, and then CaCl is added2The demulsifier is used for destroying the structure of emulsified oil in the wastewater to facilitate oil-water separation, then PAC and PAM are sequentially added as a coagulant and a flocculant to remove most of oil and SS in the wastewater, scum on the upper part of the air floatation tank automatically flows into a sludge tank, and the effluent flows into a production wastewater adjusting tank.
Degreasing wastewater treatment flow:
collecting the degreased wastewater into a second collecting tank, and pumping the degreased wastewater into a pH adjusting tank by using a water pump; h is added into a pH adjusting tank2SO4Adjusting the pH value, and enabling the effluent to flow into an oil separation tank automatically; and (3) performing oil-water separation in the oil separation tank, wherein the upper floating oil flows into the waste oil collection tank through the floating oil collection pipe, the effluent flows into the first intermediate tank, and the effluent and the oily wastewater are treated together after being mixed.
The domestic wastewater treatment process comprises the following steps:
collecting the domestic wastewater into a third collecting tank, and pumping the domestic wastewater out of the third collecting tank to a coagulating sedimentation tank; sequentially adding NaOH and CaCl into a coagulating sedimentation tank2PAC and PAM, removing most of SO in wastewater4 2-、PO4 3-Partial metal ions and COD, sludge at the bottom of the sedimentation tank automatically flows into a sludge tank, and effluent automatically flows into a second intermediate water tank; the water from the second intermediate water tank is pumped to a second coagulation air floatation tank; sequentially adding H into a second coagulation air flotation tank2SO4PAC and PAM, removing metal ions, floating oil, SS and the like in the wastewater, enabling the scum to automatically flow into a sludge tank, and enabling the effluent to automatically flow into a production wastewater adjusting tank.
The comprehensive wastewater treatment process comprises the following steps:
the production wastewater is pretreated and then is collected into a production wastewater adjusting tank, and a water outlet pump is used for pumping the production wastewater into a micro-electrolysis reaction tank; adding H into a micro-electrolysis reaction tank2SO4Adjusting pH, converting macromolecular organic matters in the wastewater into micromolecular organic matters by utilizing hydroxyl generated by the primary battery principle of iron carbon, converting organic matters which are difficult to degrade into organic matters which are easy to degrade, and automatically flowing effluent into a coagulating sedimentation tank; sequentially adding NaOH and PAM into the coagulating sedimentation tank to remove most SS and partial COD in the wastewater, and enabling the effluent to automatically flow into the comprehensive regulating tank; introducing domestic sewage from which large suspended particles and floating objects are removed by a grid into a comprehensive regulating tank, homogenizing water quality and water quantity, and pumping the water to an anaerobic tank by using a water outlet pump; degrading organic matters in the wastewater by using anaerobic bacteria flora in the anaerobic tank, improving the biodegradability of the organic matters, and enabling effluent to automatically flow into the anoxic tank; denitrifying and removing partial organic matters by using facultative bacteria flora in the anoxic tank, wherein the effluent automatically flows into the aerobic tank; converting ammonia nitrogen in the wastewater into nitrate nitrogen by using aerobic bacterial flora in an aerobic tank, refluxing the nitrate nitrogen to an anoxic tank for denitrification through a nitrifying liquid, further removing organic matters in the wastewater, and enabling effluent to automatically flow into a secondary sedimentation tank; and (3) performing mud-water separation in the secondary sedimentation tank under the action of gravity, feeding sludge at the bottom into a sludge tank, allowing effluent to flow into a third intermediate tank, discharging part of the effluent to reach the standard, and further performing advanced treatment on the rest of the effluent for recycling.
The sludge generated in the treatment process is converged into a sludge tank, the supernatant flows into a production wastewater adjusting tank, the sludge is pumped into a sludge dewatering machine through a pressure pump, the filtrate generated during sludge dewatering automatically flows into the production wastewater adjusting tank, and the mud cake is transported and disposed.
And (3) a reclaimed water recycling treatment process:
the third intermediate water tank pump is lifted to the sand filter; filtering out the residual SS and colloid in the wastewater in a sand filter, returning backwash water to a production wastewater adjusting tank, and feeding effluent into a carbon filter; removing partial fine SS, colloid and other substances in the wastewater through the adsorption and filtration of the activated carbon in the carbon filter, and enabling the effluent to enter a fourth intermediate water tank; a water outlet pump of the fourth intermediate water tank is lifted to the UF system, colloid, bacteria, SS and the like in water are further removed by utilizing the filtering action of an UF membrane, backwashing concentrated water enters the production wastewater adjusting tank, and effluent enters a fifth intermediate water tank; a water outlet pump of the fifth intermediate water tank is lifted to the first-stage RO system to remove metal and non-metal ions in the water, and the effluent enters a sixth intermediate water tank; and the water discharged from the middle water tank is pumped to a second-stage RO system to further remove metal and non-metal ions in the water, and the concentrated water of the two-stage RO is discharged to an external water discharge outlet after reaching the standard.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention in any way, and any person skilled in the art can make any simple modification, equivalent replacement, and improvement on the above embodiment without departing from the technical spirit of the present invention, and still fall within the protection scope of the technical solution of the present invention.

Claims (10)

1. The utility model provides a production and domestic wastewater integrated processing system which characterized in that: comprises an oily wastewater flow, a degreasing wastewater pretreatment flow, a domestic wastewater pretreatment flow, a comprehensive wastewater treatment process flow and a reclaimed water reuse flow;
the oily wastewater flow comprises a first collecting tank, a first oil separation tank, a first intermediate water tank, a first coagulation air flotation tank, a production wastewater adjusting tank and a first waste oil collecting barrel; the method comprises the following steps that oily wastewater enters a first collecting tank, the first collecting tank, a first oil separation tank, a first intermediate water tank, a first coagulation air flotation tank and a production wastewater adjusting tank are sequentially connected, the first coagulation air flotation tank is provided with a first medicine adding system, the first coagulation air flotation tank is connected to a sludge tank, and a first waste oil collecting barrel is used for collecting waste oil from the first oil separation tank;
the degreasing wastewater pretreatment process comprises a second collecting tank, a pH adjusting tank, a second oil separation tank, a first intermediate water tank and a second waste oil collecting barrel, wherein degreasing wastewater enters the second collecting tank, the pH adjusting tank, the second oil separation tank and the first intermediate water tank are sequentially connected, and the pH adjusting tank is provided with a pH adjusting and dosing system; the second waste oil collecting barrel is used for collecting waste oil from the second oil separation tank;
the domestic wastewater pretreatment process comprises a third collecting tank, a first coagulating sedimentation tank, a second intermediate water tank, a second coagulating air-floating tank and a production wastewater adjusting tank, domestic wastewater enters the third collecting tank, the first coagulating sedimentation tank, the second intermediate water tank, the second coagulating air-floating tank and the production wastewater adjusting tank are sequentially connected, the first coagulating sedimentation tank is provided with a second dosing system, and the second coagulating air-floating tank is provided with a third dosing system;
the comprehensive wastewater treatment process flow comprises a production wastewater adjusting tank, a micro-electrolysis reaction tank, a second coagulation sedimentation tank, a comprehensive adjusting tank, an anaerobic tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank, a third intermediate water tank and a grid water collecting well, wherein effluent and all other production wastewater except the production wastewater subjected to the treatment process enter the production wastewater adjusting tank after the treatment of an oily wastewater flow, a degreasing wastewater pretreatment flow and a domestic wastewater pretreatment flow;
the reclaimed water recycling process comprises a third middle water tank, a sand filter tank, a carbon filter tank, a fourth middle water tank, an UF system, a fifth middle water tank, a first-level RO system, a sixth middle water tank, a second-level RO system and a clean water tank, wherein secondary sedimentation tank effluent enters the third middle water tank, the sand filter tank, the carbon filter tank, the fourth middle water tank, the UF system, the fifth middle water tank, the first-level RO system, the sixth middle water tank, the second-level RO system and the clean water tank are sequentially connected, and concentrated water generated by the first-level RO system and the second-level RO system is discharged to an external water discharge port and reaches the standard.
2. The comprehensive treatment system for wastewater from production and living as claimed in claim 1, wherein: and oil-water separation is carried out in the first oil separation tank to remove floating oil in water, the floating oil flows into the waste oil collecting tank through the floating oil collecting pipe, and the effluent automatically flows into the first middle water tank.
3. The comprehensive treatment system for wastewater from production and living as claimed in claim 1, wherein: NaOH is firstly added into the first coagulation air floatation tank to adjust the pH value, and then CaCl is added2The demulsifier is used for destroying the structure of emulsified oil in the wastewater so as to facilitate oil-water separation, and then PAC and PAM are sequentially added as a coagulant and a flocculant.
4. The comprehensive treatment system for wastewater from production and living as claimed in claim 1, wherein: sequentially adding NaOH and CaCl into a first coagulating sedimentation tank2PAC and PAM, removing most of SO in wastewater4 2-、PO4 3-Partial metal ions and COD, sludge at the bottom of the sedimentation tank automatically flows into the sludge tank, and effluent automatically flows into the second intermediate water tank.
5. The comprehensive treatment system for wastewater from production and living as claimed in claim 1, wherein: sequentially adding H into a second coagulation air flotation tank2SO4PAC and PAM, removing metal ions, floating oil, SS and the like in the wastewater, enabling the scum to automatically flow into a sludge tank, and enabling the effluent to automatically flow into a production wastewater adjusting tank.
6. The comprehensive treatment system for wastewater from production and living as claimed in claim 1, wherein: adding H into a micro-electrolysis reaction tank2SO4Regulating pH value, utilizing hydroxyl produced by primary cell principle of iron-carbon to convert macromolecular organic matter in the waste water into small molecular organic matter, converting organic matter which is difficult to degrade into organic matter which is easy to degrade and dischargingThe water flows into the second coagulating sedimentation tank automatically.
7. The comprehensive treatment system for wastewater from production and living as claimed in claim 1, wherein: sequentially adding NaOH and PAM into a second coagulation sedimentation tank to remove most of SS and partial COD in the wastewater, and enabling the effluent to automatically flow into a comprehensive regulation tank; domestic sewage which is removed of large-particle suspended matters and floating matters through a grating is introduced into the comprehensive adjusting tank, the water quality and the water quantity are homogenized, and the effluent pump is lifted to the anaerobic tank.
8. The comprehensive treatment system for wastewater from production and living as claimed in claim 1, wherein: and removing part of fine SS, colloid and other substances in the wastewater through the adsorption and filtration action of the activated carbon in the carbon filter, and enabling the effluent to enter a fourth intermediate water tank.
9. The comprehensive treatment system for wastewater from production and living as claimed in claim 1, wherein: and (4) pumping water out of the fourth intermediate water tank to a UF system, further removing colloid, bacteria, SS (suspended substances) and the like in water by utilizing the filtering action of a UF membrane, feeding backwash concentrated water into a production wastewater regulating tank, and feeding the effluent into a fifth intermediate water tank.
10. The comprehensive treatment system for wastewater from production and living as claimed in claim 1, wherein: a water outlet pump of the fifth intermediate water tank is lifted to the first-stage RO system to remove metal and non-metal ions in the water, and the effluent enters a sixth intermediate water tank; and pumping the intermediate water tank to a secondary RO system.
CN202011122271.6A 2020-10-20 2020-10-20 Comprehensive treatment system for production and domestic wastewater Pending CN112321070A (en)

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CN113429084A (en) * 2021-07-30 2021-09-24 广州茂绿环保科技有限公司 Process for treating and recycling domestic sewage and industrial wastewater in industrial park
CN113683245A (en) * 2021-08-24 2021-11-23 太仓阳鸿石化有限公司 Efficient separation and recovery treatment method for ship sewage
CN114195336A (en) * 2022-01-10 2022-03-18 上海中远海运仓储有限公司 Method and system for treating oily sewage
CN114873839A (en) * 2022-04-14 2022-08-09 江苏科易达环保科技有限公司 Grain and oil production wastewater treatment method

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CN104591487A (en) * 2014-12-23 2015-05-06 安徽省天虹绿洲环保科技有限公司 Dimethylformamide and dimethylamine wastewater treatment process for synthetic leather production
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CN112979085A (en) * 2021-03-04 2021-06-18 浙江浙能技术研究院有限公司 Emulsification type high-oil-content wastewater treatment system and method
CN113429084A (en) * 2021-07-30 2021-09-24 广州茂绿环保科技有限公司 Process for treating and recycling domestic sewage and industrial wastewater in industrial park
CN113683245A (en) * 2021-08-24 2021-11-23 太仓阳鸿石化有限公司 Efficient separation and recovery treatment method for ship sewage
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Application publication date: 20210205