CN109019946A - A method of reducing wet process white carbon black industrial wastewater suspended particulate - Google Patents
A method of reducing wet process white carbon black industrial wastewater suspended particulate Download PDFInfo
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- CN109019946A CN109019946A CN201810650954.5A CN201810650954A CN109019946A CN 109019946 A CN109019946 A CN 109019946A CN 201810650954 A CN201810650954 A CN 201810650954A CN 109019946 A CN109019946 A CN 109019946A
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- carbon black
- white carbon
- industrial wastewater
- wood powder
- black industrial
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of methods for reducing wet process white carbon black industrial wastewater suspended particulate, adjust the pH value of white carbon black industrial wastewater, modified wood powder flocculant is added and carries out first time flocculation, it adds zeolite powder and carries out second of flocculation, it is precipitated after secondary flocculation, precipitating sludge carries out plate compression dehydration.This method successively flocculates to white carbon black industrial wastewater using modified wood powder and zeolite powder as flocculant, and the waste water settleability after flocculation is good, and sludge is easily dehydrated, and supernatant suspension content is low.
Description
Technical field
The invention belongs to industrial wastewater fields, and in particular to a kind of side for reducing wet process white carbon black industrial wastewater suspended particulate
Method.
Background technique
White carbon black is the general name of white powder X-ray amorphous silicic acid and silicate product, is primarily referred to as precipitating dioxy
SiClx, fumed silica and superfine silicon dioxide gel also include powdered synthetic aluminium silicate and calcium silicates etc., and composition can
Use SiO2·nH2O indicates, wherein nH2O is existed in the form of surface hydroxyl.
Precipitated silica refers to sulfuric acid, hydrochloric acid, CO2It is the silica of base stock production with waterglass, with nothing
The micropore powder of sizing exists, main production are as follows: is reacted by quartz sand with soda ash work is made under the high temperature conditions
Industry waterglass, waterglass are diluted with water to a certain concentration, and acid solution is added, and generate precipitation of silica, then cleaned, filtering, dry
Dry (drying or spraying) crushes, product white carbon black is made.
Mother liquor pressure-filtering process in carbon white production process understands some very tiny silicon dioxide granule through filter
Cloth enters in waste water, and cleaning process also has a small amount of silicon dioxide granule and enters in waste water, and small silicon dioxide granule is
The main source of white carbon black industrial wastewater suspended matter.Since the particle of white carbon black is very tiny, aluminium polychloride, polyacrylamide
Sedimentation effect of the equal flocculants for white carbon black waste water is bad, and the dehydration property of precipitating sludge is poor, in the filtrate of pressure-filtering process also
It is containing a large amount of suspended matter.The processing cost of the methods of sand filtration, micro-filtration is too high, uneconomical.
Summary of the invention
The purpose of the present invention is to solve the above problems, provide a kind of reduction wet process white carbon black industrial wastewater suspended particulate
Method, this method carries out secondary flocculation, adds different flocculants every time, sedimentation effect is good, and sludge press filtration effect is good, filtrate
Middle concentration of suspension is low.
The purpose of the present invention is achieved by the following technical scheme:
A method of wet process white carbon black industrial wastewater suspended particulate is reduced, the pH value of white carbon black industrial wastewater is adjusted, adds
Enter modified wood powder flocculant and carry out first time flocculation, adds zeolite powder and carry out second of flocculation, precipitated after secondary flocculation,
Precipitating sludge carries out plate compression dehydration.
Further, the pH value of white carbon black industrial wastewater is adjusted in 8-8.5；
White carbon black industrial wastewater and the volume ratio of modified wood powder flocculant are 100:1-1.5；
First time flocculation time are as follows: 8-10min.
Further, modified wood powder flocculant the preparation method comprises the following steps: wood powder is mixed with ethyl alcohol, by the mixed of wood powder and ethyl alcohol
It closes object and is heated to 190-200 DEG C, sodium hydroxide solution is added, react 1h, chloroacetic acid solution is then added, it is anti-at 95-100 DEG C
2h is answered, carboxylated product is obtained；Potassium peroxydisulfate and polyacrylamide are added into obtained carboxylated product, it is anti-at 50-52 DEG C
1.5h is answered, is then diluted with water to get modified wood powder flocculant.
Further, the concentration of the sodium hydroxide solution is 20wt%, the quality of wood powder, ethyl alcohol and sodium hydroxide solution
Than for 1:1:2；
The concentration of the chloroacetic acid solution is 10wt%, and the mass ratio of wood powder and chloroacetic acid solution is 1:1；
The mass ratio of wood powder, potassium peroxydisulfate and polyacrylamide is 1:0.01:0.2；
The amount of thinned water is 100 times for being diluted volume of material.
Further, the dosage of zeolite powder is 0.07-0.1g in every 1L white carbon black waste water；
Second of flocculation time is 3-5min.
Further, sedimentation time 2-4h.
Method of the invention first flocculates to white carbon black industrial wastewater with modified wood powder, the lignin in plant fiber
It is poly aromatic based compound, there is space net structure, wood powder and Polyacrylamide Grafted, gained modified wood powder flocculant contains
The groups such as a large amount of amino, carboxyl, can bond together to form biggish particle, the effect of zeolite powder is with the hydroxyl on white carbon black surface
Increase the specific gravity and sinking speed of flocculate.In precipitating sludge after secondary flocculation sedimentation, floccule is larger, carries out micro- when filters pressing
Small hard charcoal black track producing particle is easily detected by filter cloth, and dehydration property is good.
The invention has the following advantages:
The method provided by the invention for reducing wet process white carbon black industrial wastewater suspended particulate, is made with modified wood powder and zeolite powder
It for flocculant, successively flocculates to white carbon black industrial wastewater, the waste water settleability after flocculation is good, and sludge is easily dehydrated, supernatant
Suspension content is low.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described, it should be understood that preferred embodiment described herein is only used
In the description and interpretation present invention, it is not intended to limit the present invention.
In embodiment modified wood powder the preparation method comprises the following steps: 100g wood powder and 100g dehydrated alcohol are thoroughly mixed, wood
Powder is 300 mesh, after being heated to 190-200 DEG C, is slowly added to sodium hydroxide solution (the 40g hydroxide that 200g concentration is 20wt%
Sodium is dissolved in 160mL water), quaternization 1h after mixing.The chloroacetic acid solution that 100g concentration is 10wt% is added after quaternization
(10g monoxone is dissolved in 90mL water), reacts 2h at 95-100 DEG C, obtains carboxylated product.1g mistake is added into carboxylated product
Potassium sulfate and 20g polyacrylamide, react 1.5h at 50-52 DEG C after mixing.After reaction by resulting material with 100
The water dilution of times volume to get.
White carbon black industrial wastewater is from mother liquor filters pressing in sulfuric acid process carbon white production process, pH value 7.4, SS concentration
650mg/L。
White carbon black industrial wastewater is handled in 3 kinds of methods of embodiment.
Embodiment 1
A method of wet process white carbon black industrial wastewater suspended particulate being reduced, the pH value for adjusting white carbon black industrial wastewater arrives
8.2, on the basis of the volume of white carbon black industrial wastewater, the above-mentioned modified wood powder flocculant of wastewater volume 1% is added, is slowly stirred
Flocculate 8min.The zeolite powder of 300 mesh is added into waste water again, the additional amount of zeolite powder is slowly stirred based on every 1L waste water 0.07g
Flocculate 3min.Wastewater sedimentation 4h after flocculation, supernatant discharge, precipitating sludge carry out plate compression.
Embodiment 2
A method of wet process white carbon black industrial wastewater suspended particulate being reduced, the pH value for adjusting white carbon black industrial wastewater arrives
8.0, on the basis of the volume of white carbon black industrial wastewater, the above-mentioned modified wood powder flocculant of wastewater volume 1.2% is added, slowly stirs
Mix flocculation 8min.The zeolite powder of 300 mesh is added into waste water again, the additional amount of zeolite powder is slowly stirred based on every 1L waste water 0.08g
Mix flocculation 4min.Wastewater sedimentation 3h after flocculation, supernatant discharge, precipitating sludge carry out plate compression.
Embodiment 3
A method of wet process white carbon black industrial wastewater suspended particulate being reduced, the pH value for adjusting white carbon black industrial wastewater arrives
8.5, on the basis of the volume of white carbon black industrial wastewater, the above-mentioned modified wood powder flocculant of wastewater volume 1.5% is added, slowly stirs
Mix flocculation 10min.The zeolite powder of 300 mesh is added into waste water again, the additional amount of zeolite powder is slowly stirred based on every 1L waste water 0.1g
Mix flocculation 5min.Wastewater sedimentation 2h after flocculation, supernatant discharge, precipitating sludge carry out plate compression.
As a result
SS, precipitating sludge moisture content, sludge press filtration filtrate SS, filter cake moisture content are seen below white carbon black industrial wastewater before and after the processing
Table.
Breaking strength Mpa before and after 1 rubber heat ageing of table
As seen from the above table, method of the invention to the removal rate of suspension particulate matter in white carbon black industrial wastewater up to 95% with
On, the dehydration property of sludge is good, and hard charcoal black track producing particle is not easy to reenter waste water through filter cloth during sludge press filtration.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although referring to aforementioned reality
Applying example, invention is explained in detail, for those skilled in the art, still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features.It is all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of method for reducing wet process white carbon black industrial wastewater suspended particulate, which is characterized in that adjust white carbon black industrial wastewater
PH value, modified wood powder flocculant is added and carries out first time flocculation, adds zeolite powder and carries out second and flocculate, after secondary flocculation
It is precipitated, precipitating sludge carries out plate compression dehydration.
2. the method according to claim 1 for reducing wet process white carbon black industrial wastewater suspended particulate, which is characterized in that adjust
The pH value of white carbon black industrial wastewater is in 8-8.5；
White carbon black industrial wastewater and the volume ratio of modified wood powder flocculant are 100:1-1.5；
First time flocculation time are as follows: 8-10min.
3. the method according to claim 1 or 2 for reducing wet process white carbon black industrial wastewater suspended particulate, which is characterized in that
Modified wood powder flocculant the preparation method comprises the following steps: wood powder is mixed with ethyl alcohol, the mixture of wood powder and ethyl alcohol is heated to 190-200
DEG C, sodium hydroxide solution is added, reacts 1h, chloroacetic acid solution is then added, reacts 2h at 95-100 DEG C, obtains carboxylated production
Object；Potassium peroxydisulfate and polyacrylamide are added into obtained carboxylated product, 1.5h is reacted at 50-52 DEG C, then uses water
Dilution is to get modified wood powder flocculant.
4. the method according to claim 3 for reducing wet process white carbon black industrial wastewater suspended particulate, which is characterized in that described
The concentration of sodium hydroxide solution is 20wt%, and the mass ratio of wood powder, ethyl alcohol and sodium hydroxide solution is 1:1:2；
The concentration of the chloroacetic acid solution is 10wt%, and the mass ratio of wood powder and chloroacetic acid solution is 1:1；
The mass ratio of wood powder, potassium peroxydisulfate and polyacrylamide is 1:0.01:0.2；
The amount of thinned water is 100 times for being diluted volume of material.
5. the method according to claim 1 for reducing wet process white carbon black industrial wastewater suspended particulate, which is characterized in that every 1L
The dosage of zeolite powder is 0.07-0.1g in white carbon black waste water；
Second of flocculation time is 3-5min.
6. the method according to claim 1 for reducing wet process white carbon black industrial wastewater suspended particulate, which is characterized in that precipitating
Time is 2-4h.
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| CN201810650954.5A CN109019946B (en) | 2018-06-22 | 2018-06-22 | Method for reducing suspended particles in wastewater produced by wet white carbon black production |
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| CN201810650954.5A CN109019946B (en) | 2018-06-22 | 2018-06-22 | Method for reducing suspended particles in wastewater produced by wet white carbon black production |
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| CN109019946B CN109019946B (en) | 2022-02-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115465968A (en) * | 2022-09-16 | 2022-12-13 | 嘉兴学院 | Method for separating and recovering chromium in chrome tanning waste liquid |
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| US20170334758A1 (en) * | 2012-03-16 | 2017-11-23 | Aquatech International, Llc | Process for purification of produced water |
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2018
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| CN1082121A (en) * | 1992-07-10 | 1994-02-16 | S·C·瓦德哈万 | The treatment process of spent pickle liquor |
| US20170334758A1 (en) * | 2012-03-16 | 2017-11-23 | Aquatech International, Llc | Process for purification of produced water |
| CN104986939A (en) * | 2015-07-03 | 2015-10-21 | 天津霍普环保科技有限公司 | Preparing method for modified wood powder amphiprotic dehydrating agent |
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| 太湖水环境修复示范项目技术专家组 编: "《高度处理净化槽结构设计与维护管理指南》", 30 April 2007 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115465968A (en) * | 2022-09-16 | 2022-12-13 | 嘉兴学院 | Method for separating and recovering chromium in chrome tanning waste liquid |
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