WO2019196053A1

WO2019196053A1 - High-efficiency energy-saving integrated water treatment device

Info

Publication number: WO2019196053A1
Application number: PCT/CN2018/082791
Authority: WO
Inventors: 周长贵
Original assignee: 苏州荣能环保科技有限公司
Priority date: 2018-04-12
Filing date: 2018-04-12
Publication date: 2019-10-17
Also published as: DE212018000007U1; CN108495824A

Abstract

A high-efficiency energy-saving integrated water treatment device, comprising a domestic sewage pretreatment module, an industrial sewage pretreatment module and a mixing treatment module; the domestic sewage pretreatment module comprises a grating well (1), an oil separation tank (2), a comprehensive regulation tank (3), an anaerobic tank (4), an oxidation tank (5) and a sedimentation tank (6); the industrial sewage pretreatment module comprises a sand sinking tank (7), a regulation tank (8), a coagulation tank (9), a flocculation tank (10), an air flotation tank (11) and a sludge thickening tank (12); the mixing treatment module comprises an intermediate water tank (13), a sand filtering container (14), a carbon filtering container (15), an ultra-filtration apparatus (16) and a reverse-osmosis apparatus (17); the sedimentation tank (6) is in communication with the intermediate water tank (13); the anaerobic tank (4), the oxidation tank (5) and the sedimentation tank (6) are in communication with the sludge thickening tank (12) by means of sludge pipes respectively; the ultra-filtration apparatus (16) and a concentrated water tank (20) are in communication with the regulation tank (8) by means of a concentrated water return pipe, respectively. By simultaneously performing concentration processing on the industrial sewage and domestic sewage generated in the production process, the water treatment efficiency and the qualification rate of water discharge are improved, and the water treatment cost is reduced.

Description

Energy efficient integrated water treatment equipment

Technical field

The invention belongs to the technical field of wastewater reclamation treatment, and in particular relates to an apparatus for integrally treating industrial wastewater and domestic sewage.

Background technique

Water is one of the most precious natural resources of mankind. It is also an important resource for human beings and all living things to survive and indispensable. China has a large amount of water resources, but China has a large population and its per capita possession is very poor. It is disturbing that this limited water resource is also subject to varying degrees of pollution, and even some places are heavily polluted.

In the production process, electronic enterprises will produce a large amount of domestic sewage and industrial wastewater. The composition of the water body is more complicated. If it is not treated, it will directly pollute the surface water. The toxicity will lead to the death or even extinction of aquatic animals and plants. Moreover, industrial wastewater and domestic sewage will also penetrate into the ground, pollute the groundwater and pollute crops, eventually endangering human health and causing damage to the surrounding environment.

At this stage, the treatment of industrial wastewater and domestic sewage is relatively independent, so that the treatment cost is large, which causes a large economic burden for the enterprise; and the treatment method adopted is rough, which cannot meet the discharge standards of industrial wastewater and domestic sewage. .

Summary of the invention

The technical problem mainly solved by the invention is to provide an energy-efficient integrated water treatment equipment, and simultaneously treat industrial wastewater and domestic sewage generated in the production process, improve the water treatment efficiency and the water discharge compliance rate, and reduce the water treatment cost of the enterprise. Economical and practical.

In order to solve the above technical problem, a technical solution adopted by the present invention is: an energy-efficient integrated water treatment device, including a domestic sewage pretreatment module, an industrial wastewater pretreatment module, and a mixing processing module;

The domestic sewage treatment module includes a grid well, a grease trap, an integrated regulating tank, an anaerobic tank, an oxidation tank and a sedimentation tank which are sequentially connected through a waste water pipeline; the industrial wastewater pretreatment module includes a sink connected through the waste water pipeline in sequence Sand pool, regulating tank, coagulation tank, flocculation tank, air flotation tank and sludge concentration tank; the mixing treatment module comprises an intermediate pool, a sand filter tank, a carbon filter tank, an ultrafiltration device and a reverse osmosis which are sequentially connected through the waste water pipeline The sedimentation tank is in communication with the intermediate pool; the anaerobic tank, the oxidation tank and the sedimentation tank are respectively connected to the sludge concentration tank through a sludge pipeline; the reverse osmosis device comprises a fresh water outlet and concentrated water a water outlet, the fresh water outlet is connected to the return water tank through a pipeline, and the concentrated water outlet is connected to the concentrated water tank through a pipeline; the ultrafiltration device and the concentrated water tank respectively pass through the concentrated water return pipeline and the adjustment tank Connected

The air floating pool includes a gas floating tank water outlet and a gas floating tank sewage outlet, the sludge concentration tank includes a sludge concentration tank water outlet and a sludge concentration tank sewage outlet; the air floating pool water outlet and the sludge concentration tank water outlet The sewage outlet is connected to the integrated regulating tank through a waste water pipeline; the sewage outlet of the air floating tank is connected to the sludge thickening tank through a sludge pipeline, and the sewage outlet of the sludge thickening tank is connected to the filter press through the sludge pipeline;

The bottom of the adjustment tank, the bottom of the concrete pool, the bottom of the flocculation tank, the bottom of the comprehensive adjustment tank and the bottom of the anaerobic tank are respectively provided with a stirring mechanism, and the bottom of the oxidation pool is exposed a gas turbine, wherein the aerator is connected to a fan of an outer wall of the oxidation tank through a pipe;

The coagulation tank has a sodium hydroxide dosing port and a PAC dosing port, the sodium hydroxide dosing port is externally connected with a sodium hydroxide dosing box, and the PAC dosing port is externally connected with a PAC dosing box; the flocculation tank The utility model has a PAM dosing port, and the PAM dosing port is externally connected with a PAM dosing box;

The outer wall of the air floating pool is provided with a dissolved gas tank for supplying air to the air floating pool;

Also included is a controller, the filter press, a stirring mechanism, a fan, a solenoid valve of a sodium hydroxide dosing box, a solenoid valve of a PAC dosing box, a solenoid valve of a PAM dosing tank, and a dissolved gas tank, respectively, and the control Electrical connection.

Further, the water outlet of the filter press is connected to the integrated regulating tank through a pipe.

Further, a pH meter for detecting the pH of the conditioning tank is provided in the conditioning tank, and the pH meter is electrically connected to the controller.

Further, a slag scraping mechanism is disposed above the air floating pool, and the scraping mechanism includes a scraping plate, a driving chain for fixing the scraping plate, and a driving mechanism for driving the driving chain, wherein the driving mechanism and the controller are electrically connection.

Further, the dissolved gas tank comprises an air inlet and a water inlet, and a water inlet of the dissolved gas tank is connected to the water return tank through a pipeline, and an air inlet of the dissolved gas tank is externally connected to a high pressure gas source.

Further, a PVDF ultrafiltration membrane is disposed in the ultrafiltration device.

Further, the reverse osmosis device is provided with a reverse osmosis unit, and the reverse osmosis unit is provided with a polypropylene film, a cellulose acetate film and an aromatic polyamide film which are sequentially laminated (in the water flow direction). The surface micropore diameter of the propylene film is 100 to 200 nm, the surface micropore diameter of the cellulose acetate film is 8 to 10 nm, and the surface micropore diameter of the aromatic polyamide film is 0.5 to 1.5 nm.

Further, the grit chamber is provided with a cone grit chamber, and a plurality of different diameter filtering holes are arranged on the outer peripheral surface of the grit chamber, and the upper opening of the grit chamber is connected with the waste water pipe, and the sinking The lower conical mouth of the sand trough is connected to the sludge concentration tank through a sludge pipeline, and the bottom of the grit chamber is connected to the coagulation tank through the waste water pipeline on either side of the grit chamber.

Further, the grit chamber is a grit chamber that is resistant to acid and alkali.

Further, the pore size of the filter pore is 0.01 to 0.1 cm.

The beneficial effects of the present invention have at least the following points:

1. The invention comprises a domestic sewage pretreatment module, an industrial wastewater pretreatment module and a mixed treatment module, and the industrial wastewater and domestic sewage generated in the production process are collectively treated to ensure that the COD value in the discharged water body is ≤500 mg/l, and the turbidity is < 1-2 NTU, chroma <5, pH 6-8 and both ammonia nitrogen concentration and phosphate concentration are 0;

2. The invention cross-processes the domestic sewage pretreatment module, the industrial wastewater pretreatment module and the mixed treatment module, and the domestic sewage pretreatment module, the industrial wastewater pretreatment module and the mixing treatment module to ensure zero discharge of waste liquid and waste residue. To improve wastewater discharge standards;

3. The reverse osmosis unit is provided in the reverse osmosis device of the present invention, and the reverse osmosis unit is provided with a polypropylene film, a cellulose acetate film and an aromatic polyamide film which are sequentially stacked (in the direction of water flow), thereby effectively removing microorganisms in the water body, Colloids and organic matter;

4. The grit chamber of the present invention is provided with a cone grit chamber, and a plurality of different diameter filter holes are distributed on the outer peripheral surface of the grit chamber, the waste water enters the cone grit chamber, and flows downward in a vortex, and the macromolecule in the water body The particles are blocked by the filter holes and remain in the grit chamber, which effectively improves the clarity of the wastewater after passing through the grit chamber;

5. The processing equipment of the invention has reasonable layout and smooth process flow, ensures long-term stable operation of the processing equipment, and ensures that the wastewater reaches the standard discharge.

DRAWINGS

Figure 1 is a schematic structural view of a process apparatus of the present invention;

2 is a schematic structural view of a grit chamber of the present invention;

Figure 3 is a schematic diagram of the control principle of the present invention;

The parts in the drawing are marked as follows:

Grille well 1, grease trap 2, integrated regulating tank 3, anaerobic tank 4, oxidation tank 5, sedimentation tank 6, grit chamber 7, regulating tank 8, coagulation tank 9, flocculation tank 10, air flotation tank 11, Sludge concentration tank 12, intermediate pool 13, sand filter tank 14, carbon filter tank 15, ultrafiltration device 16, reverse osmosis device 17, filter press 18, return water tank 19, concentrated water tank 20, stirring mechanism 21, fan 22 A sodium hydroxide dosing tank 23, a PAC dosing tank 24, a PAM dosing tank 25, a dissolved gas tank 26, a controller 27, a pH meter 28, and a grit chamber 29.

detailed description

The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings, in which the advantages and features of the invention can be more readily understood by those skilled in the art.

Embodiment: An energy-efficient integrated water treatment device, as shown in FIGS. 1 to 3, includes a domestic sewage pretreatment module, an industrial wastewater pretreatment module, and a mixing treatment module;

The domestic sewage treatment module comprises a grid well 1, a grease trap 2, an integrated adjustment tank 3, an anaerobic tank 4, an oxidation tank 5 and a sedimentation tank 6 which are sequentially connected through a waste water pipeline; the industrial wastewater pretreatment module includes The waste water pipeline sequentially connects the grit chamber 7, the adjustment tank 8, the coagulation tank 9, the flocculation tank 10, the air flotation tank 11 and the sludge concentration tank 12; the mixing treatment module includes an intermediate pool 13 and sand which are sequentially connected through the waste water pipeline a canister 14, a carbon canister 15, an ultrafiltration device 16 and a reverse osmosis device 17; the sedimentation tank 6 is in communication with the intermediate pool 13; the anaerobic tank, the oxidation tank and the sedimentation tank respectively pass through the sludge pipeline The sludge concentrating tank is connected; the reverse osmosis device 17 includes a fresh water outlet and a concentrated water outlet, and the fresh water outlet is connected to the return water tank 19 through a pipeline, and the concentrated water outlet is connected to the concentrated tank 20 through a pipeline. The ultrafiltration device 16 and the concentrated water tank 20 are respectively connected to the conditioning tank through a concentrated water return pipe;

The air floating pool 11 includes a gas floating tank water outlet and a gas floating tank sewage outlet, the sludge concentration tank 12 includes a sludge concentration tank water outlet and a sludge concentration tank sewage outlet; the air floating pool water outlet and the sludge concentration tank The water outlet is respectively connected to the integrated regulating tank 3 through a waste water pipe; the sewage outlet of the air floating tank is connected to the sludge thickening tank 12 through a sludge pipeline, and the sewage outlet of the sludge thickening tank passes through the sludge pipeline and the filter press 18 connected;

The bottom of the adjustment tank, the bottom of the concrete pool, the bottom of the flocculation tank, the bottom of the comprehensive adjustment tank and the bottom of the anaerobic tank are respectively provided with a stirring mechanism 21, and the bottom of the oxidation pool is provided An aerator, the aerator and the fan 22 on the outer wall of the oxidation tank are connected by a pipe;

The coagulation tank has a sodium hydroxide dosing port and a PAC dosing port, the sodium hydroxide dosing port is externally connected with a sodium hydroxide dosing box 23, and the PAC dosing port is externally connected to the PAC dosing box 24; The flocculation tank has a PAM dosing port, and the PAM dosing port is externally connected to the PAM dosing box 25;

The outer wall of the air floating pool 11 is provided with a dissolved gas tank 26 for supplying air to the air floating pool;

Further comprising a controller 27, the filter press, a stirring mechanism, a fan, a solenoid valve of a sodium hydroxide dosing box, a solenoid valve of a PAC dosing box, a solenoid valve of a PAM dosing tank, and a dissolved gas tank, respectively The controller is electrically connected.

The water outlet of the filter press is connected to the integrated regulating tank through a pipeline.

A pH meter 28 for detecting the pH of the conditioning tank is provided in the conditioning tank, and the pH meter 28 is electrically connected to the controller 27.

A slag scraping mechanism is disposed above the air floating pool, and the scraping mechanism includes a scraping plate, a driving chain for fixing the scraping plate, and a driving mechanism for driving the driving chain, and the driving mechanism is electrically connected to the controller.

The dissolved gas tank includes an air inlet and a water inlet, and the water inlet of the dissolved gas tank is connected to the water return tank through a pipeline, and the air inlet of the dissolved gas tank is externally connected to a high pressure gas source.

A PVDF ultrafiltration membrane is disposed in the ultrafiltration device.

The reverse osmosis device is provided with a reverse osmosis unit, and the reverse osmosis unit is provided with a polypropylene film, a cellulose acetate film and an aromatic polyamide film which are sequentially laminated (in the water flow direction), and the surface of the polypropylene film The micropore diameter is from 100 to 200 nm, the surface micropore diameter of the cellulose acetate film is from 8 to 10 nm, and the surface micropore diameter of the aromatic polyamide film is from 0.5 to 1.5 nm.

The grit chamber 7 is provided with a cone grit chamber 29, and a plurality of different diameter filter holes are arranged on the outer peripheral surface of the grit chamber 29, and an upper opening of the grit chamber 29 is connected with the waste water pipe. The lower tapered mouth of the grit chamber 29 is connected to the sludge concentration tank through a sludge pipe, and the bottom of the grit chamber is connected to the coagulation tank through the waste water pipe on either side of the grit chamber.

The grit chamber 29 is a grit chamber that is resistant to acid and alkali.

The pore size of the filter hole is 0.01 to 0.1 cm.

The working principle of the invention is as follows:

On the one hand, the domestic sewage enters the grid well and the grease trap through the waste water pipeline, removes the macromolecular particles and the oil agent in the water body, and then passes through the comprehensive adjustment tank to adjust the pH value of the water body, and then passes to the anaerobic tank in turn, The oxidation tank and the sedimentation tank remove organic matter and small molecule suspended matter in the water body, and degrade the COD, SS and nitrogen and phosphorus contents in the water body; on the other hand, the industrial wastewater enters the grit chamber, the regulating pool and the coagulation through the waste water pipeline. The pool, flocculation tank, air flotation tank and sludge concentration tank remove macromolecular particles, suspended solids, oil substances, etc. in the water body; the domestic sewage in the sedimentation tank and the industrial wastewater in the sludge concentration tank are all connected to the intermediate pool. Then, it is sequentially passed to a sand filter, a carbon filter, an ultrafiltration device, and a reverse osmosis device to further remove small molecular impurities such as microorganisms, colloids and organic substances in the water body, thereby effectively purifying the water body and ensuring that the water body reaches the standard discharge;

Among them, the sediment generated in the anaerobic tank, the oxidation tank and the sedimentation tank will pass through the sludge pipeline to the sludge concentration tank, and the scum generated in the air floating tank will also pass to the sludge concentration tank, and the air floatation tank and the sludge The waste liquid generated in the concentration tank and the filter press will pass through the waste water pipe to the comprehensive regulating tank, and the concentrated water in the ultrafiltration device and the concentrated water tank will also pass to the regulating tank to ensure zero discharge of waste liquid and waste residue in the process of equipment processing. .

The above is only the embodiment of the present invention, and thus does not limit the scope of the patent of the present invention. Any equivalent structural transformation made by using the specification and the drawings of the present invention, or directly or indirectly applied to other related technical fields, is the same. The scope of the invention is included in the scope of the patent protection of the present invention.

Claims

An energy-efficient integrated water treatment device, comprising: a domestic sewage pretreatment module, an industrial wastewater pretreatment module and a mixing processing module;

The domestic sewage treatment module includes a grid well, a grease trap, an integrated regulating tank, an anaerobic tank, an oxidation tank and a sedimentation tank which are sequentially connected through a waste water pipeline; the industrial wastewater pretreatment module includes a sink connected through the waste water pipeline in sequence Sand pool, regulating tank, coagulation tank, flocculation tank, air flotation tank and sludge concentration tank; the mixing treatment module comprises an intermediate pool, a sand filter tank, a carbon filter tank, an ultrafiltration device and a reverse osmosis which are sequentially connected through the waste water pipeline The sedimentation tank is in communication with the intermediate pool; the anaerobic tank, the oxidation tank and the sedimentation tank are respectively connected to the sludge concentration tank through a sludge pipeline; the reverse osmosis device comprises a fresh water outlet and concentrated water a water outlet, the fresh water outlet is connected to the return water tank through a pipeline, and the concentrated water outlet is connected to the concentrated water tank through a pipeline; the ultrafiltration device and the concentrated water tank respectively pass through the concentrated water return pipeline and the adjustment tank Connected

The air floating pool includes a gas floating tank water outlet and a gas floating tank sewage outlet, the sludge concentration tank includes a sludge concentration tank water outlet and a sludge concentration tank sewage outlet; the air floating pool water outlet and the sludge concentration tank water outlet The sewage outlet is connected to the integrated regulating tank through a waste water pipeline; the sewage outlet of the air floating tank is connected to the sludge thickening tank through a sludge pipeline, and the sewage outlet of the sludge thickening tank is connected to the filter press through the sludge pipeline;

The bottom of the adjustment tank, the bottom of the concrete pool, the bottom of the flocculation tank, the bottom of the comprehensive adjustment tank and the bottom of the anaerobic tank are respectively provided with a stirring mechanism, and the bottom of the oxidation pool is exposed a gas turbine, wherein the aerator is connected to a fan of an outer wall of the oxidation tank through a pipe;

The coagulation tank has a sodium hydroxide dosing port and a PAC dosing port, the sodium hydroxide dosing port is externally connected with a sodium hydroxide dosing box, and the PAC dosing port is externally connected with a PAC dosing box; the flocculation tank The utility model has a PAM dosing port, and the PAM dosing port is externally connected with a PAM dosing box;

The outer wall of the air floating pool is provided with a dissolved gas tank for supplying air to the air floating pool;

Also included is a controller, the filter press, a stirring mechanism, a fan, a solenoid valve of a sodium hydroxide dosing box, a solenoid valve of a PAC dosing box, a solenoid valve of a PAM dosing tank, and a dissolved gas tank, respectively, and the control Electrical connection.
The energy-efficient integrated water treatment device according to claim 1, wherein the water outlet of the filter press is connected to the integrated regulating tank through a pipe.
The energy-efficient integrated water treatment device according to claim 1, wherein the adjustment tank is provided with a pH meter for detecting the pH of the adjustment tank, and the pH meter is electrically connected to the controller.
The energy-efficient integrated water treatment device according to claim 1, wherein a scraping mechanism is disposed above the air floating pool, and the scraping mechanism comprises a scraping plate, a transmission chain for fixing the scraping plate, and a driving transmission. A drive mechanism for chain operation, the drive mechanism being electrically coupled to the controller.
The energy-efficient integrated water treatment device according to claim 1, wherein the dissolved gas tank comprises an air inlet and a water inlet, and the water inlet of the dissolved gas tank is connected to the water tank through a pipe. The inlet of the dissolved gas tank is externally connected to a high-pressure gas source.
The energy-efficient integrated water treatment device according to claim 1, wherein the ultrafiltration device is provided with a PVDF ultrafiltration membrane.
The energy-efficient integrated water treatment device according to claim 1, wherein the reverse osmosis unit is provided with a reverse osmosis unit, and the reverse osmosis unit is provided with a polypropylene film which is sequentially stacked (in the direction of water flow). a cellulose acetate film having a surface micropore diameter of 100 to 200 nm and a surface micropore diameter of the cellulose acetate film of 8 to 10 nm, the aromatic polyamide film The surface micropore diameter is from 0.5 to 1.5 nm.
The energy-efficient integrated water treatment device according to claim 1, wherein the grit chamber is provided with a cone grit chamber, and a plurality of different diameter filter holes are distributed on the outer peripheral surface of the grit chamber. The upper opening of the grit chamber is connected with the waste water pipe, and the lower conical port of the grit chamber is connected to the sludge concentration tank through the sludge pipe, and the bottom of the grit chamber is located on either side of the grit chamber and passes the waste water. The pipe is connected to the concrete pool.
The energy-efficient integrated water treatment device according to claim 8, wherein the grit chamber is an acid-resistant and alkali-resistant grit chamber.
The energy-efficient integrated water treatment apparatus according to claim 8, wherein the pore size of the filter hole is 0.01 to 0.1 cm.