Process for treating complex nickel in synthetic pharmacy wastewater

A technology for pharmaceutical wastewater and treatment process, which is applied in water/sewage treatment, natural water treatment, neutralized water/sewage treatment, etc. It can solve the problem of less research on complex nickel treatment technology for wastewater, and achieve economical and feasible operating costs. Stable running effect

Inactive Publication Date: 2019-04-12
SHANGHAI TONGJI CONSTR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are few researches on the treatment technology of complexed nickel in synthetic pharmaceutical industry wastewater

Method used

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  • Process for treating complex nickel in synthetic pharmacy wastewater

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Experimental program
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Effect test

Embodiment

[0021] Such as figure 1 Shown, the flow chart of a kind of synthetic pharmaceutical wastewater complexed nickel treatment process provided by the present invention, concrete steps are as follows:

[0022] The waste water generated in the process of synthetic pharmaceuticals is collected and enters the adjustment pool 1, where the water volume and water quality are balanced to stabilize the influent water quality of the subsequent treatment process; the balanced waste water enters the network breaking pool 2 , adding a complexation breaking agent in the complexation pool 2 to separate the complexed nickel into ionic nickel to facilitate the subsequent removal of nickel; the nickel-containing wastewater after the complexation enters into the pH adjustment pool 3, where Sodium hydroxide and sodium carbonate are added to remove the nickel ions in the wastewater by the formation of nickel carbonate precipitation; the mud-water mixture in the pH adjustment tank 3 enters the coagulat...

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Abstract

The invention discloses a process for treating complex nickel in synthetic pharmacy wastewater; the process is characterized by comprising the following steps: enabling the wastewater to flow into anadjusting tank to balance water quality and then enter a decomplexing tank; enabling the wastewater to enters a pH adjusting tank after decomplexing in the decomplexing tank to adjust the pH value toform a precipitate; enabling the precipitate to enter a coagulating sedimentation tank, and adding a medicament for assisting settling, and carrying out sludge-water separation; enabling the separatedsupernate to enter a heavy-catching agent tank, and adding a medicament into the heavy-catching agent tank for further removing nickel; entering a secondary sedimentation tank for mud-water separation; enabling the separated supernate to enter an ion exchanger for treatment and then discharging when up to the standard. The process disclosed by the invention is stable in operation; the total nickel concentration of effluent can meet the current emission standard; the operation cost is economical and feasible.

Description

technical field [0001] The invention relates to a complex nickel treatment process for synthetic pharmaceutical wastewater. Background technique [0002] Nickel is very closely related to human life, and has been widely used in steel, nickel-based alloys, electroplating, batteries and other fields. Due to the hazards of nickel, the national environmental protection standards have become more and more strict on its emission. Nickel compounds are a class of multi-organ toxicants, which can affect many important organs such as liver, kidney, lung, cardiovascular system, and blood. The source of complexed nickel in synthetic pharmaceutical wastewater is mainly that the nickel washing water used in pharmaceutical workshops to prepare nickel catalysts with liquid caustic soda and nickel-aluminum alloys contains nickel, and the catalyst washing water in the reduction process of nickel catalysts used in pharmaceutical processes contains nickel. These nickel and The complexed small ...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C02F9/04C02F11/122C02F101/20C02F103/34
CPCC02F1/42C02F1/5236C02F1/56C02F1/66C02F9/00C02F11/122C02F2001/007C02F2101/20C02F2103/343
Inventor顾峥李利兴杨继
OwnerSHANGHAI TONGJI CONSTR TECH