Device for treating high-concentration electroplating wastewater and application thereof

A technology of electroplating wastewater and high concentration, which is used in metallurgical wastewater treatment, neutralized water/sewage treatment, oxidized water/sewage treatment, etc. It can solve the problem of difficult to achieve ideal results, achieve remarkable removal effect and small footprint , Improve the effect of effective space

Inactive Publication Date: 2010-09-29
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For high-concentration electroplating wastewater treatment, it is difficult to achieve the ideal effect by adopting the first-level treatment ...

Method used

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  • Device for treating high-concentration electroplating wastewater and application thereof
  • Device for treating high-concentration electroplating wastewater and application thereof
  • Device for treating high-concentration electroplating wastewater and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Equipment treatment water volume 60m 3 / h, press figure 1 process shown. Calcium hydroxide is added to the water inlet of the coagulation inclined plate sedimentation tank to adjust the pH value to 7.0-7.5, and sodium hydroxide is added to the middle part to fine-tune the pH value to 8.5-9.0. Add polyacrylamide 2mg / L to the coagulation inclined plate sedimentation tank, and control the pH value of the clear water tank between 6.0 and 9.0. The coagulation inclined plate sedimentation tank automatically discharges mud once every 4 hours. The multimedia filter tank is backwashed once every 12 hours. The working pressure of thick slurry pump is controlled at 2kgf / cm 2 .

[0047] The equipment runs continuously and stably, and the processing results are shown in Table 2.

[0048] Table 2 Equipment treatment water quality

[0049]

[0050] The removal rate of each index is shown in Table 3.

[0051] Table 3 Removal rate of various pollutants

[0052]

[0053] F...

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Abstract

The invention relates to a device for treating high-concentration electroplating wastewater and application thereof. The device comprises an electroplating wastewater regulating tank, a micro-porous aeration neutralization reaction tank, an intermediate water tank, a coagulation inclined-plate sedimentation tank, a sludge concentration tank, a multi-media filtering tank, a clear water tank, a calcium hydroxide dosing tank, a sodium hydroxide dosing tank, a polyacrylamide dosing tank, a hydrochloric acid storage tank, a chamber filter press, a water pump, a dosing pump, an air blower and a consistency pump, wherein the high-concentration electroplating wastewater can be treated by using the components based on the combined process of micro-porous aeration neutralization reaction, coagulation inclined-plate sedimentation and multi-media filtering. The device for treating the high-concentration comprehensive electroplating pickling wastewater has the advantage of significant removal effect, particularly, the removal rate based on COD (chemical oxygen demand) is higher than 80%; the removal rate of petroleum-related pollutant is higher than 95%; the removal rate of phosphorus, zinc and copper in total and the removal rate of iron in total are higher than 99.5%; the removal rate of chromium in total is higher than 99%; and the removal rate of nickel is higher than 90%. Therefore, the device of the invention is applicable in treating high-concentration electroplating wastewater and pickling wastewater.

Description

technical field [0001] The invention relates to a treatment method for high-concentration electroplating wastewater, in particular to a method and a special device for treating high-concentration electroplating wastewater through a combined process of microporous aeration neutralization reaction + coagulation inclined plate sedimentation + multi-media filtration. Background technique [0002] Electroplating is the "beautician" of metal surface treatment. It can obtain functional, decorative and protective metal film layers on various substrates. Its products are used in various industries. Therefore, electroplating plays a decisive role in the construction of the national economy. It is an indispensable and important part of the production process of most industries, and it cannot be replaced by other processes. However, electroplating has attracted attention for seriously polluting the environment. Electroplating enterprises are not only big polluters, but also big water u...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F1/52C02F1/66C02F1/74C02F11/12C02F103/16
Inventor 于永辉孙承林杨旭乔瑞平臧广安于波
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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