Aluminum workpiece oxidation treatment wastewater treatment monitoring system

Abstract

An aluminum workpiece oxidation treatment wastewater treatment monitoring system sequentially comprises a flocculation sedimentation tank, a PP filter, a tubular membrane filter and a middle water storage tank, a water quality probe is arranged in a tank body of the middle water storage tank, and the probe is connected with a water quality online analyzer through a signal line; the middle water storage tank is provided with a water outlet pipe. The waste water treatment device is specially used for treating and monitoring waste water generated after oxidation surface treatment of the aluminum workpiece, waste water exceeding the standard can be prevented from being discharged to a sewer line, frequent manual sampling detection is not needed, and waste water which does not meet the requirement can be returned to a front-end working procedure to be purified again.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field, concretely is a kind of aluminium workpiece oxidation treatment wastewater treatment monitoring system. BACKGROUND

[0002] Aluminum alloy surface oxidation treatment is common aluminum alloy surface treatment form, and a layer of oxide film is formed on the surface of aluminum alloy by electrochemical method, which can enhance the corrosion resistance, hardness and aesthetic appearance of the material. Workpiece oxidation treatment is carried out through degreasing, pickling, alkaline cleaning, oxidation, sealing and other processes, and each process corresponds to several liquid tanks. After soaking in the liquid tank, the workpiece needs to be cleaned in clean water. The waste liquid in the tank is collected and treated as hazardous waste. The clean water used for cleaning also contains impurities and pollutants, which also need to be treated before discharge. The wastewater contains heavy metal ions such as nickel, zinc and copper, and high concentration of salt, oil, surfactant and dye. If not properly treated, it will cause serious pollution to the environment.

[0003] Usually, after oxidation treatment wastewater is treated by pH adjustment, coagulation and sedimentation, filtration and other processes, it can meet the discharge standard. However, most aluminum processing enterprises run the wastewater treatment system all year round, and lack of maintenance and supervision. Although the water quality of treated wastewater can be detected regularly, it is too late when the discharge water quality is found to be out of standard, and a certain amount of wastewater has been discharged into the sewer network, causing great pressure on the subsequent wastewater treatment process. SUMMARY

[0004] The utility model aims at providing a kind of aluminium workpiece oxidation treatment wastewater treatment monitoring system, it is specially used to treat and monitor the wastewater after the oxidation surface treatment of aluminium workpiece, can prevent the discharge of wastewater exceeding standard to sewer pipe, without frequent sampling detection by artificial, the wastewater that does not meet the requirements can be returned to the front-end process for re-purification treatment.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0006] A kind of aluminium workpiece oxidation treatment wastewater treatment monitoring system, the system includes flocculation sedimentation tank, PP filter, tubular membrane filter and intermediate water storage tank in sequence, water quality probe is arranged in the intermediate water storage tank body, and the probe is connected with water quality on-line analyzer by signal line;Flocculation sedimentation tank is provided with wastewater inlet, and intermediate water storage tank is provided with outlet pipe.

[0007] The wastewater enters the flocculation sedimentation tank from the water inlet pipe, and the flocculating agent that has been dissolved and matched is added into the flocculation sedimentation tank; the clear water after flocculation and sedimentation is pumped into the PP filter, and the PP filter core filters the more fine solid impurities; the clear water flowing out of the PP filter is pumped into the tubular membrane filter, the ultrafiltration membrane in the tubular membrane filter filters various heavy metal ions contained in the wastewater, and finally the clear water pumped into the intermediate water storage tank is reclaimed water that can be directly discharged into the sewer network; the water quality on-line analyzer is a JH-9 on-line water quality analyzer produced by Wuhan Jinghui Environmental Protection Technology Co., Ltd., which can on-line monitor various metal ions, Ph value, ammonia nitrogen and other various pollutants in water; when some indicators exceed the standard, the on-duty personnel decide whether to discharge the wastewater in the reclaimed water storage tank after rechecking.

[0008] The water outlet pipe of the intermediate water storage tank is further connected with a backwater pipe, the end of the backwater pipe is connected to the water inlet of the flocculation sedimentation tank, and a switch valve and a liquid pump are arranged on the backwater pipe.

[0009] The flocculation sedimentation tank is a reciprocating baffle flocculation sedimentation tank, the baffle is separated into flow channels, the flow channels are connected with a plurality of sedimentation funnels, the sedimentation funnels are connected with overflow walls, and the overflow walls are connected with a clear water tank; the sedimentation funnels are connected with a sludge discharge pipe, and a sludge valve is arranged on the sludge discharge pipe.

[0010] After the wastewater enters the reciprocating baffle area, the wastewater is mixed with the prepared flocculation liquid, and flocculation and sedimentation are generated through the mixing and stirring effect of the reciprocating flow channels, the flocculation and sedimentation enter the sedimentation area, the flocculation sludge is deposited below the inverted conical funnel, when the amount accumulates to a certain amount, the sludge valve on the sludge pipe is opened, and the sludge is discharged for separate treatment; the supernatant flows into the clear water area through the overflow wall, and reaches the PP filter of the next process through the liquid discharge pipe.

[0011] An inclined plate is arranged on the side of the overflow wall above the sedimentation funnel. The inclined plate can effectively block the flocculation suspended matter from floating upward and flowing into the clear water tank through the overflow wall.

[0012] Advantages of the utility model

[0013] 1. The utility model is special for treating and monitoring the wastewater after the surface treatment of aluminum workpiece oxidation, can prevent the overproof wastewater from being discharged into the sewer pipe, does not need manual frequent sampling detection, and the wastewater that does not meet the requirements can be returned to the front end process for re-purification treatment.

[0014] 2. The utility model can effectively purify the wastewater, the purified wastewater can achieve the effect of direct discharge, and the system equipment needs less consumables, and only needs to replace the PP filter regularly. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structure schematic view of the utility model;

[0016] Figure 2 It is a structure schematic view of the flocculation sedimentation tank from the top;

[0017] Figure 3 It is a structure schematic view of the flocculation sedimentation tank from the top;

[0018] The serial number and the component name in the drawing are: 1-flocculation sedimentation tank; 11-baffle; 12-inclined plate; 13-sedimentation funnel; 14-overflow wall; 15-clean water tank; 2-PP filter; 3-tubular membrane filter; 4-intermediate water storage tank; 5-water quality on-line analyzer. DETAILED DESCRIPTION

[0019] Example 1

[0020] An aluminum workpiece oxidation treatment wastewater treatment monitoring system, the system sequentially includes flocculation sedimentation tank 1, PP filter 2, tubular membrane filter 3 and intermediate water storage tank 4, the intermediate water storage tank 4 is provided with water quality probe in the tank body, and the probe is connected with water quality on-line analyzer 5 through signal line; the flocculation sedimentation tank 1 is provided with wastewater inlet, and the intermediate water storage tank 4 is provided with water outlet pipe.

[0021] The water outlet pipe of the intermediate water storage tank 4 is further connected with a backwater pipe, the backwater pipe is connected to the water inlet of the flocculation sedimentation tank 1 at the end, and a switch valve and a liquid pump are arranged on the backwater pipe.

[0022] The flocculation sedimentation tank 1 is a reciprocating baffle flocculation sedimentation tank, the flow channel separated by the baffle 11 is connected with a plurality of sedimentation funnels 13, the sedimentation funnels 13 are connected with overflow walls 14, and the overflow walls 14 are connected with clean water tanks 15; the sedimentation funnels 13 are connected with sludge discharge pipes below, and sludge valves are installed on the sludge discharge pipes.

[0023] The inclined plate 12 is arranged on the side of the overflow wall 14 above the sedimentation funnel 13.

Claims

1. An aluminum workpiece oxidation processing wastewater treatment monitoring system characterized by: The system sequentially comprises a flocculation sedimentation tank (1), a PP filter (2), a tubular membrane filter (3) and an intermediate water storage tank (4), the intermediate water storage tank (4) is provided with a water quality probe in the tank body, the probe is connected with a water quality on-line analyzer (5) through a signal line; the flocculation sedimentation tank (1) is provided with a wastewater inlet, and the intermediate water storage tank (4) is provided with a water outlet pipe.

2. The system for monitoring the treatment of wastewater from the oxidation of aluminum workpieces according to claim 1, wherein: A backwater pipe is further connected to the water outlet pipe of the intermediate water storage tank (4), the end of the backwater pipe is connected to the water inlet of the flocculation sedimentation tank (1), and a switch valve and a liquid pump are arranged on the backwater pipe.

3. The system for monitoring treatment of wastewater from an oxidation process for aluminum workpieces of claim 1, wherein: The flocculation sedimentation tank (1) is a reciprocating baffle flocculation sedimentation tank, the flow channel separated by the baffle (11) is connected with a plurality of sedimentation funnels (13) in sequence, the sedimentation funnels (13) are connected with an overflow wall (14) in sequence, and the overflow wall (14) is connected with a clear water tank (15); a sludge discharge pipe is connected below the sedimentation funnels (13), and a sludge valve is installed on the sludge discharge pipe.

4. The system for monitoring treatment of wastewater from an oxidation process for aluminum workpieces of claim 3, wherein: An inclined plate (12) is arranged on one side of the overflow wall (14) above the sedimentation funnels (13).

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