A water treating agent and a preparing method thereof

A water treatment agent and calcination treatment technology, applied in the field of composite water treatment agent and its preparation, can solve the problems of COD reaching the standard discharge, difficult to achieve treatment effect, etc.

Active Publication Date: 2015-04-01
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Practice has shown that although these agents have a certain treatment effect on COD in wastewater, it is still difficult to achieve a good treatment effect and make COD discharge up to the standard.

Method used

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  • A water treating agent and a preparing method thereof
  • A water treating agent and a preparing method thereof
  • A water treating agent and a preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] 1. Preparation of activated lignite-based activated carbon

[0086] (1-1) First, add lignite-based activated carbon into water, heat, boil, and wash with water, wherein the ratio of lignite-based activated carbon weight to water volume is 1:1.5; wash with water for 10 minutes and then filter while hot to obtain water-washed activated carbon;

[0087] (1-2) After the water-washed activated carbon is cooled to room temperature (15-30°C), it is added to the hydrochloric acid solution, acid-soaked and filtered under stirring to obtain acid-soaked activated carbon, wherein the mass percent concentration of the hydrochloric acid solution is 10 %, the ratio of the weight of lignite-based activated carbon to the volume of hydrochloric acid solution is 1:6.5; the stirring rate is 80rpm, and the acid soaking time is 8h;

[0088] (1-3) Acid-soaked activated carbon is rinsed with distilled water until the effluent is neutral to obtain neutral activated carbon washed with distilled ...

Embodiment 2

[0101] 1. Preparation of activated lignite-based activated carbon

[0102](1-1) First, add lignite-based activated carbon into water, heat, boil, and wash with water, wherein the ratio of the weight of lignite-based activated carbon to the volume of water is 1:1; after 8 minutes of water-washing, filter while it is hot to obtain water-washed activated carbon;

[0103] (1-2) After the water-washed activated carbon is cooled to room temperature (15-30°C), it is added to the hydrochloric acid solution, acid-soaked and filtered under agitation to obtain acid-soaked activated carbon, wherein the mass percent concentration of the hydrochloric acid solution is 8 %, the ratio of the weight of lignite-based activated carbon to the volume of hydrochloric acid solution is 1:5; the stirring rate is 100rpm, and the acid soaking time is 9h;

[0104] (1-3) Acid-soaked activated carbon is rinsed with distilled water until the effluent is neutral to obtain neutral activated carbon washed with ...

Embodiment 3

[0117] 1. Preparation of activated lignite-based activated carbon

[0118] (1-1) First, add lignite-based activated carbon into water, heat, boil, and wash with water, wherein the ratio of the weight of lignite-based activated carbon to the volume of water is 1:2; after 15 minutes of water-washing, filter while hot to obtain water-washed activated carbon;

[0119] (1-2) After the water-washed activated carbon is cooled to room temperature (15-30° C.), it is added to the hydrochloric acid solution, acid-soaked and filtered under stirring to obtain acid-soaked activated carbon, wherein the mass percent concentration of the hydrochloric acid solution is 12 %, the ratio of the weight of lignite-based activated carbon to the volume of hydrochloric acid solution is 1:8; the stirring rate is 50rpm, and the acid soaking time is 7h;

[0120] (1-3) Acid-soaked activated carbon is rinsed with distilled water until the effluent is neutral to obtain neutral activated carbon washed with dis...

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Abstract

A water treating agent and a preparing method thereof are provided. The water treating agent is prepared from following components by weight: 50-70 parts of lignite-based activated carbon, 20-30 parts of polyaluminium chloride, 5-15 parts of nanometer zinc oxide, 3-7 parts of carboxamidine and 2.5-3.5 parts of coal tar. The water treating agent has good removal functions for degradation-resistant organic matters in waste water. The COD content of waste water treated by using the water treating agent can be stably controlled below 100 mg/L, and reaches primary integrated waste water discharge standards of national regulations in China.

Description

technical field [0001] The invention belongs to the field of environmental protection, and relates to a water treatment agent and a preparation method thereof, in particular to a composite water treatment agent with activated carbon as a base material and a preparation method thereof. Background technique [0002] In the process of human activities and industrial production, a large amount of waste water, sewage and waste liquid will be produced, which contain raw materials for industrial production, intermediate products and products, as well as garbage and waste lost with water. The number of types of wastewater continues to increase, and the pollution of water bodies is becoming more and more serious, threatening human health and safety. There are many types of wastewater, complex composition, many types of organic pollutants, high concentration, high COD value, deep color, high toxicity, difficult to purify, accumulation in organisms, and obvious oxygen consumption in wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/52C02F1/72C02F1/30
Inventor 张春晖王凯谭淑慧彭忱
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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