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A chemical nickel wastewater treatment agent

A wastewater treatment agent, chemical nickel technology, applied in the field of chemical nickel wastewater treatment, can solve the problems of long process flow, high operating cost, large energy consumption, etc., and achieve the effect of simple raw materials, saving land occupation, and easy availability of raw materials

Active Publication Date: 2019-03-26
漆雅丽 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are various problems that need to be solved urgently, such as (1) large investment, large land occupation, and large energy consumption; (2) long process flow, difficult operation and management, high labor intensity for workers, and high operating costs; (3) difficult to operate stably Discharge

Method used

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  • A chemical nickel wastewater treatment agent
  • A chemical nickel wastewater treatment agent
  • A chemical nickel wastewater treatment agent

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Experimental program
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Effect test

Embodiment 1

[0019] Chongqing Haoli Electroplating Wastewater Treatment Station was put into operation in 2012, with a treatment capacity of 1,000 tons per day. Since the plastic electroplating contains chemical nickel wastewater, the chemical nickel wastewater is 50 tons / day, and the water quality of the chemical nickel wastewater in this station is: total nickel 80mg / L. The old technology was used at the beginning, the process is complicated and the process is long (1 regulating tank, 4 reaction tanks, and a sedimentation tank), there are many types of chemicals (5 kinds of chemicals), and the cost is high: the cost of treating one ton of chemical nickel wastewater is 20 The cost of water, electricity, labor, facilities and equipment is 10 yuan, and the nickel index of wastewater treatment cannot meet the standard stably. In October 2013, after our company took over the operation and management of the wastewater station, we solved this problem by applying the "TL chemical nickel wastewat...

Embodiment 2

[0023] The invention was applied in March 2014, and gradually expanded to four units including Chongqing Qizhu Electroplating Wastewater Station, Chongqing Hengke Machinery Manufacturing Co., Ltd. (Electroplating Industrial Park), and Chongqing Zhilun Electroplating Co., Ltd. (Electroplating Industrial Park). Treatment of electroplating wastewater up to 3800m 3 As mentioned above, through repeated monitoring and testing by the municipal and district environmental protection departments, there has never been any phenomenon of excessive discharge, and the total nickel and total phosphorus can fully meet the discharge standards in Table 3, which is highly praised.

[0024] Chongqing Zhilun Electroplating Wastewater Treatment Station was put into operation in 2012, with a treatment capacity of 2,000 tons per day. Due to the complex water quality in the electroplating park, there are several chemical nickel plating production lines in the park, and the chemical nickel wastewater is...

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Abstract

The invention provides a chemical nickel wastewater treatment agent which comprises 70-90 wt% of alkaline matter and 10-30 wt% of oxidizer. The chemical nickel wastewater treatment agent is characterized in that the alkaline matter is one or more of NaOH, Na2CO3 and CaO; and the oxidizer is H2O2 or / and Na2S2. The agent is used for treating chemical nickel wastewater and implementing complete and thorough settling of nickel ions and phosphorus; and the water quality completely satisfies the discharge standard in Table 3 in GB21900-2008 Electroplating Pollutant Discharge Standard.

Description

technical field [0001] The invention belongs to the field of industrial wastewater treatment, in particular to the treatment of chemical nickel wastewater. Background technique [0002] At present, almost all electroplating industrial parks have electroless nickel plating. The wastewater generated in electroless nickel plating is called chemical nickel wastewater. The composition of chemical nickel wastewater is relatively complex, including hypophosphite, phosphite, additives and other substances. Among them, wastewater The complexing agent in the complex will combine with nickel ions to form complex small molecules with relatively stable performance, which makes it difficult for nickel ions to form nickel hydroxide precipitation with hydroxide ions, and the total phosphorus content in wastewater is very high, so chemical nickel wastewater treatment It is very difficult, and it is difficult for total nickel and total phosphorus to meet the emission standards in Table 3 of G...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/72C02F1/66C02F101/20C02F101/10C02F103/16
CPCC02F1/66C02F1/72C02F1/722C02F2101/105C02F2101/20C02F2103/16
Inventor 漆雅丽吴雨时吴平益
Owner 漆雅丽
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