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Process method for treating precipitated white carbon black wastewater

A technology of precipitated white carbon black and process method, which is applied in the field of treating precipitated white carbon black wastewater, and can solve the problems of expensive treatment cost, high requirements for treatment equipment, and large investment

Active Publication Date: 2020-10-23
JIANGXI BLACK CAT CARBON BLACK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Due to the existing wastewater treatment technology for precipitated silica, there are problems of high requirements for treatment equipment, large investment, and expensive treatment costs, which cannot meet the needs of production enterprises to achieve "zero" discharge of wastewater treatment for precipitated silica

Method used

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  • Process method for treating precipitated white carbon black wastewater
  • Process method for treating precipitated white carbon black wastewater
  • Process method for treating precipitated white carbon black wastewater

Examples

Experimental program
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Effect test

Embodiment 1

[0057] The precipitated silica wastewater from the workshop wastewater tank is cooled through the wastewater cooling tower, and the cooled wastewater is sent to the sedimentation wastewater tank for natural settlement. The desiliconization device performs electrolytic desiliconization treatment. Add a small amount of desiliconization agent, coagulation aid and reducing agent after electrolytic desiliconization, conduct ultrafiltration treatment through submerged ultrafiltration membrane modules, and perform reverse osmosis through SRO reverse osmosis system after adding high silicon scale inhibitor in ultrafiltration treated water Processing, get "clear water" and "concentrated water". The "concentrated water" is sent to the evaporation system for evaporation treatment to obtain anhydrous sodium sulfate. Send the evaporation condensate of the evaporation system and the above-mentioned "clear water" to the clean water tank for the use of the white carbon black production syste...

Embodiment 2

[0061] The precipitated silica wastewater from the workshop wastewater tank is cooled through the wastewater cooling tower, and the cooled wastewater is sent to the sedimentation wastewater tank for natural settlement, and a large amount of silicon removal agent, coagulation aid and reducing agent are added for chemical removal. Silicon, after chemical desiliconization, conduct ultrafiltration treatment through submerged ultrafiltration membrane modules, add high-silicon scale inhibitors to ultrafiltration treated water, and then conduct reverse osmosis treatment through SRO reverse osmosis system to obtain "clear water" and "concentrated water" . The "concentrated water" is sent to the evaporation system for evaporation treatment to obtain anhydrous sodium sulfate. Send the evaporation condensate of the evaporation system and the above-mentioned "clear water" to the clean water tank for the use of the white carbon black production system. Wherein the amount of each chemical ...

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Abstract

The invention discloses a process method for treating precipitated white carbon black wastewater. The method comprises the following steps of: carrying out electrolytic silicon removal treatment on pretreated precipitated white carbon black wastewater through an electrolytic silicon removal device; performing ultrafiltration treatment on the wastewater subjected to electrolytic silicon removal through an immersed ultrafiltration membrane assembly to obtain ultrafiltered water; performing reverse osmosis treatment on the ultrafiltered water through an SRO reverse osmosis system to obtain clearwater and concentrated water; and sending the concentrated water to an evaporation system for evaporation treatment to obtain anhydrous sodium sulfate. Experiments prove that compared with the prior art, the process method has the advantages that soluble silicon in the precipitated white carbon black wastewater can be effectively removed, the problems of scaling and blockage of an ultrafiltrationmembrane and a reverse osmosis membrane are well solved, the service life of the membranes is greatly prolonged, the treatment cost is reduced, and zero emission of the precipitated white carbon blackwastewater is realized.

Description

technical field [0001] The present application relates to the technical field of chemical wastewater treatment, and more specifically, relates to a process for treating precipitated white carbon black wastewater. Background technique [0002] White carbon black is the common name of artificially synthesized hydrated silica powder, and its name comes from its performance similar to that of carbon black for rubber reinforcement. Carbon black has a long history as a reinforcing agent for rubber. Since carbon black as a black reinforcing agent is limited in some application fields that require color, people began to study the synthesis of active amorphous carbon dioxide by chemical methods. Silicon replaces carbon black. Amorphous silica is another excellent reinforcing filler after carbon black. Because of its white color, it is commonly called white carbon black. [0003] Silica is roughly divided into precipitated silica and fumed silica according to the production method. ...

Claims

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Application Information

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IPC IPC(8): C02F9/10C02F11/125C02F101/10
CPCC02F1/04C02F1/441C02F1/444C02F1/46104C02F1/56C02F1/66C02F1/70C02F5/14C02F9/00C02F11/125C02F2001/007C02F2101/101
Inventor 申志忠韩怀见陈志勋周海梁智彪
Owner JIANGXI BLACK CAT CARBON BLACK CO LTD
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