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Processing method for recycling electroplating concentrated control zone electroplating waste water resource

A technology of electroplating wastewater and treatment method, which is applied in the fields of metallurgical wastewater treatment, chemical instruments and methods, flotation water/sewage treatment, etc., can solve the problems of electroplating wastewater that cannot stably meet discharge standards, high cost, and sludge becoming hazardous waste. , to achieve the effect of large promotion and application value, large economic value, and reduced recycling value

Active Publication Date: 2011-05-25
ZHEJIANG HI TECH ENVIRONMENTAL TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] In order to overcome the current high cost of electroplating wastewater treatment in the electroplating centralized control area, the sludge has become hazardous waste, and the electroplating wastewater cannot meet the discharge standards stably, the purpose of the present invention is to provide a resource recovery treatment method for electroplating wastewater in the electroplating centralized control area , this method can not only make the discharge of electroplating wastewater meet the standard stably, but also recover the valuable resources in the wastewater at low cost, greatly reduce secondary pollution, and realize the clean production of electroplating wastewater treatment and the environmental protection requirements of the electroplating centralized control area

Method used

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  • Processing method for recycling electroplating concentrated control zone electroplating waste water resource
  • Processing method for recycling electroplating concentrated control zone electroplating waste water resource
  • Processing method for recycling electroplating concentrated control zone electroplating waste water resource

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Effect test

Embodiment 1

[0023] The total amount of electroplating wastewater in the electroplating centralized control area is 3000m 3 , the influent water quality indicators are shown in the following table 1:

[0024] Table 1 Water Quality and Quantity of Electroplating Wastewater Unit: mg / L

[0025]

[0026] The above wastewater is used as figure 1 The processing method shown, the steps are as follows:

[0027] a) The electroplating process poured tank water 1 of each electroplating factory is collected in buckets 2 respectively, and then classified and recovered 3, that is, pretreatment: mainly adopt chemical methods, adjust the optimal pH according to the properties of various types of wastewater to make The heavy metals are completely precipitated and collected by adding alkali: calcium hydroxide to form a precipitate. The pH value is controlled at 7 when copper is recovered, the pH value is controlled at 9.5 when nickel is recovered, and the pH value is controlled at 5.5 when chromium is ...

Embodiment 2

[0040] The total amount of electroplating wastewater in the electroplating centralized control area is 3000m 3 , the influent water quality indicators are shown in Table 2 below:

[0041] Table 2 Water Quality and Quantity of Electroplating Wastewater Unit: mg / L

[0042]

[0043] The above wastewater is used as figure 1 The processing method shown, the steps are as follows:

[0044] a) The electroplating process poured tank water 1 of each electroplating factory is collected in buckets 2 respectively, and then classified and recovered 3, that is, pretreatment is carried out, mainly using chemical methods, and adjusting the optimal pH according to the properties of various types of wastewater. The heavy metals are completely precipitated and collected by adding alkali: calcium hydroxide to form a precipitate. The pH value is controlled at 7 when copper is recovered, the pH value is controlled at 9.5 when nickel is recovered, and the pH value is controlled at 5.5 when chrom...

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Abstract

The invention relates to a processing method for recycling an electroplating concentrated control zone electroplating waste water resource, which comprises the following steps: firstly, preprocessing the inverted trough water in the electroplating production process, recycling valuable metals in the inverted trough water, and respectively filling the pretreated tail water in corresponding processing systems according to kinds; then, recycling copper, nickel and chromium resources in the corresponding processing system; afterwards, mixing other drain away water in a base station and the waste water with recycled copper, nickel and chromium resources, and then carrying out integrated structure breaking, neutralizing and coagulating sedimentation, and mixing the treated waste water and the pretreated water by treatment of oil separation, oil removal and coagulating sedimentation for biochemical treatment; and finally, discharging the effluent which reaches the standard. The method not only enables the electroplating waste water to reach the standard and can be discharged stably, but also recycles the valuable resources in the waste water in low cost, greatly reduces the secondary pollution and realizes the clean production of electroplating waste water control and the environmental requirements of the electroplating concentrated control zone.

Description

technical field [0001] The invention relates to a treatment method for wastewater, in particular to a treatment method for resource recycling of electroplating wastewater in an electroplating centralized control area. Background technique [0002] The electroplating centralized control area is a new type of electroplating production organization model, which adopts the industrial centralized control area mode of "centralized production, centralized management, centralized governance, and centralized monitoring". Establishing an electroplating centralized control area can realize the market-oriented operation of centralized wastewater treatment, ensure that the pollutants discharged by the electroplating enterprises in the area meet the standards, and minimize the impact on the surrounding environment. The establishment of an electroplating centralized control area is not only convenient for the management of electroplating enterprises, but also more beneficial Pollution cont...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C22B7/00C02F1/72C02F1/40C02F1/24C02F1/52C02F103/16
Inventor 楼洪海许海亮张世新魏俊朱斌来
Owner ZHEJIANG HI TECH ENVIRONMENTAL TECH
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