Treatment method and equipment for high phosphorus haematite mineral processing acid wastewater

A technology for acid wastewater and treatment equipment, which is applied in the directions of water/sewage multi-stage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc. Short running cycle of the agent and other problems, to achieve the effect of online circulation and efficient utilization of resources, good phosphorus removal effect, and good solid-liquid separation effect

Inactive Publication Date: 2009-05-06
WUHAN UNIV OF TECH
View PDF1 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Natural materials and waste residues are readily available, inexpensive, and vary in adsorption capacity. The disadvantage is that the replacement cost of the adsorbent is

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Treatment method and equipment for high phosphorus haematite mineral processing acid wastewater

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1:

[0030] A method for treating acid wastewater from high-phosphorus hematite beneficiation, which comprises the following steps:

[0031] 1) Preparation of modified red mud:

[0032] (1) Dry the red mud in a drying box at 90°C for 2 hours, then crush it (crush with a mortar) and pass through a 20-mesh sieve. Take the sieve material (as a modified object) to obtain the red mud powder for use;

[0033] (2) According to red mud powder: hydrochloric acid = 40g:1L, select red mud powder and hydrochloric acid, where the mass concentration of hydrochloric acid is 5%; put the red mud powder in hydrochloric acid, and fully stir it in a 60℃ water bath for 1 hour, The mixture is obtained after cooling;

[0034] (3) Add ammonia to the mixed solution and stir, adjust the pH to 7.5, and let it stand (to fully precipitate the suspended matter in the mixed solution); pour out the supernatant and wash the precipitated material with distilled water 5 times (to remove soluble subst...

Example Embodiment

[0040] Example 2:

[0041] A method for treating acid wastewater from high-phosphorus hematite beneficiation, which comprises the following steps:

[0042] 1) Preparation of modified red mud:

[0043] (1) Dry the red mud in a drying oven at 100°C for 2.5 hours, then crush it (crush with a mortar) and pass through a 20-mesh sieve, and take the sieve material (as a modified object) to obtain red mud powder for use;

[0044] (2) According to red mud powder: hydrochloric acid = 50g:1L, select red mud powder and hydrochloric acid, where the mass concentration of hydrochloric acid is 7%; put the red mud powder in hydrochloric acid, and stir it in a water bath at 80°C for 1.5h , The mixture is obtained after cooling;

[0045] (3) Add ammonia to the mixed solution and stir, adjust the pH to 8.0, and let it stand (to fully precipitate the suspended matter in the mixed solution); pour out the supernatant, and wash the precipitated substance with distilled water 7 times (to remove the solubl...

Example Embodiment

[0050] Example 3:

[0051] A method for treating acid wastewater from high-phosphorus hematite beneficiation, which comprises the following steps:

[0052] 1) Preparation of modified red mud:

[0053] (1) Dry the red mud in a drying box at 90-105°C for 2 to 3 hours, then crush it (crush with a mortar) and pass through a 20-mesh sieve to remove the sieved material (as a modified object) to obtain red mud powder. spare;

[0054] (2) According to the red mud powder: hydrochloric acid=40g~60g:1L, select the red mud powder and hydrochloric acid, where the mass concentration of hydrochloric acid is 5-10%; put the red mud powder in hydrochloric acid in a water bath at 60-100℃ Stir fully in the pot for 1~2h, and get the mixed liquid after cooling;

[0055] (3) Add ammonia to the mixed liquid and stir, adjust the pH to 7.5-8.5, and let it stand (to fully precipitate the suspended matter in the mixed liquid); pour out the supernatant, and wash the precipitated material with distilled water ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a method for treating wastewater and equipment thereof. A method for treating acid wastewater generated during high phosphorus hematite ore dressing is characterized in comprising the following steps: 1)a step of preparation of modified red mud is prepared, which comprises the following sub-steps: (1) red mud is dried, crushed and passed through a 20-mesh sieve to obtain red mud powder; (2) according to a red mud powder to hydrochloric acid ratio of between 40 to 60g:1L, the red mud powder is added into the hydrochloric acid, fully stirred in a water bath pot at 60 to 100 DEG C for 1 to 2 hours and cooled to obtain a mixed solution, and (3) the mixed solution is added with ammonia water with stirring, subjected to adjustment pH value to between 7.5 and 8.5 and keeps stand; and the obtained precipitate is washed with distillate water, dried, crushed, passed through a 60-mesh sieve to obtain the modified red mud; and 2) according to a principle of 6 to 23 grams of modified red mud for per litter of acid wastewater generated during the high phosphorus hematite ore dressing, modified red mud is added into a coagulative precipitation tank containing acid wastewater generated during the high phosphorus hematite ore dressing and stirred for 1 to 2 hours to obtain mud-water mixed liquid; and the mud-water mixed liquid flows to a dynamic membrane reactor to obtain reusable acid purified water. The method has the characteristics of good treatment effect, simple process operation, high water flux, low cost, short treatment period, etc.

Description

technical field [0001] The invention relates to a wastewater treatment method and equipment thereof. Background technique [0002] Hematite is one of the widely distributed iron minerals in nature, and its phosphorus content is generally high. High-phosphorus hematite ore beneficiation acidic wastewater is the acidic phosphorus-containing wastewater produced in the iron ore chemical beneficiation process. In recent decades, due to the fact that many mineral processing acidic phosphorus-containing waste liquids (such as high-phosphorus hematite mineral processing acidic wastewater) have not been effectively treated, they have been directly discharged into lakes, rivers, coastal waters and open seas in large quantities, resulting in serious pollution of water bodies. Increase the nutrient load of the water body, destroy the aquatic ecological balance, cause the sensory performance of the water body to deteriorate, the self-purification ability to weaken, the water quality to ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C02F9/02C02F1/28
Inventor 夏世斌张一敏张义鲁双月
Owner WUHAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap