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A kind of combined treatment method of stearate wastewater

A technology of joint treatment and stearate, applied in the field of joint treatment of stearate wastewater, can solve problems such as troublesome treatment of barium stearate wastewater, waste water discharge, etc., and achieve no cross-contamination in the operation process, environmental protection, and large society. effect of benefit

Active Publication Date: 2016-05-11
NANTONG XINBANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The production of zinc stearate by metathesis will inevitably produce a large amount of waste water containing sodium sulfate; while the cost of barium stearate is the lowest by metathesis, and the production of barium stearate by metathesis will inevitably produce barium stearate waste water containing barium chloride. The treatment of barium stearate wastewater is troublesome, and the environmental protection work must be paid close attention to, and the wastewater containing barium chloride cannot be discharged. However, under such a background, there is no report on the wastewater treatment method of stearate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of joint treatment method of special stearate waste water, specifically the joint treatment of zinc stearate waste water and barium stearate waste water. and the zinc stearate wastewater whose dry molar ratio is 1.5 times the amount of barium stearate wastewater is added to the barium stearate wastewater pool for joint treatment, mixed evenly for 20 minutes, and finally obtained only sodium chloride and sodium sulfate , and qualified transparent mixed solution of production wastewater.

[0020] Concrete, zinc stearate wastewater adjustment steps are:

[0021] (1) Zinc stearate waste water passes through the floating tank and enters the No. 1 filter for separation. Part of the solid zinc stearate obtained by filtration is returned to the zinc stearate production system for reuse; the filtered filtrate is sent to stearic acid Zinc wastewater collection tank, and adjust the pH value of the zinc stearate wastewater collection tank to 9 with liquid sodium hydroxide, ...

Embodiment 2

[0028] On the basis of embodiment 1, increase the pretreatment step of barium stearate waste water before the joint treatment step, the pretreatment step of barium stearate waste water is specifically as follows: barium stearate waste water is passed through floating pond, by No. 3 filter Separate and filter to obtain part of the solid barium stearate, return to the barium stearate production system for reuse; the filtrate obtained by filtering is sent to the barium stearate waste water collection tank, and all the other operations are the same as in Example 1, only changing some parameters The settings are as follows: add the adjusted zinc stearate wastewater with a dry molar ratio twice the amount of barium stearate wastewater to the barium stearate wastewater pool for joint treatment, and adjust the stearate wastewater with liquid sodium hydroxide. The pH value of the acid zinc wastewater collection pond is up to 9.5.

[0029] In this embodiment, the solid barium stearate i...

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PUM

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Abstract

The invention discloses a combined treatment method for stearate wastewater. The combined treatment method has the innovation point as follows: the stearate wastewater contains zinc stearate wastewater and barium stearate wastewater. The combined treatment method comprises the steps of regulating the pH value of the zinc stearate wastewater by using liquid sodium hydroxide to generate a sediment; adding the regulated zinc stearate wastewater 1.5-2 times as much as that of the barium stearate wastewater into a barium stearate wastewater tank, and carrying out combined treatment; and uniformly mixing for 20 minutes to finally obtain production wastewater only containing a qualified and transparent sodium chloride and sodium sulfate mixed solution. According to the combined treatment method, the zinc stearate wastewater and the barium stearate wastewater are subjected to combined treatment, so that the discharging problem of the barium stearate wastewater is solved, and the whole operation process is simple, convenient and free of cross pollution; in addition, the utilized equipment is simple, no additional cost is increased, the environment is protected, and meanwhile, great social benefits are brought for enterprises, so that the combined treatment method is worthy of being popularized in the stearate industry.

Description

technical field [0001] The invention relates to a combined treatment method for stearate wastewater, which belongs to the field of chemical production. Background technique [0002] Manufacturers of stearate generally produce several stearates such as calcium stearate, zinc stearate, and barium stearate. Generally, zinc stearate can be used as heat stabilizer; lubricant; grease; accelerator; thickener, etc. For example, it can generally be used as a heat stabilizer for PVC resin. Used for general industrial transparent products; used together with calcium soap, it can be used for non-toxic products. Generally, this product is mostly used for soft products, but in recent years, hard transparent products such as mineral water bottles, water pipes and other products have been used. This product has good lubricity and can be used It can improve the phenomenon of scaling and precipitation, and it can also be used as a lubricant, a release agent, a flatting agent for paint, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04C02F103/36
CPCC02F1/5236C02F1/66C02F9/00C02F2103/36
Inventor 吴羽峰冒圣华冒莹莹
Owner NANTONG XINBANG CHEM