Efficient arsenic removal method for sewage of sulfuric acid workshop
A sewage and workshop technology, applied in water/sewage treatment, multi-stage water/sewage treatment, oxidized water/sewage treatment, etc., can solve the problems of poor arsenic removal effect and long treatment time in sewage, and solve the problem of suspended floc objects, improve processing speed, and improve the effect of removal effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0017] Embodiment 1, a high-efficiency arsenic removal method for sulfuric acid workshop sewage, comprising the following steps:
[0018] Step 1. Introduce sewage into a section of reaction pool, and add Na to the section of reaction pool 2 The S solution carries out arsenic precipitation once, and the pH value of the sewage is adjusted to be 2, and the time is 45 minutes, and the Na 2 The concentration of S solution is 0.0056g / ml;
[0019] Step 2. After press filtration, filtrate and washing, the sewage in the first-stage reaction pool is introduced into the second-stage reaction pool, and Na is added to the second-stage reaction pool. 2 The S solution carries out secondary arsenic precipitation, and the pH value of the sewage is adjusted to be 2, and the time is 10 minutes, and the Na 2 The concentration of S solution is 0.056g / ml;
[0020] Step 3, introducing the sewage in the second-stage reaction pool into the third-stage reaction pool after pressure filtration, filtra...
Embodiment 2
[0024] Embodiment 2, a method for efficiently removing arsenic from sulfuric acid workshop sewage, comprising the following steps:
[0025] Step 1. Introduce sewage into a section of reaction pool, and add Na to the section of reaction pool 2 The S solution carries out arsenic precipitation once, and the pH value of the sewage is adjusted to be 2, and the time is 50 minutes, and the Na 2 The concentration of S solution is 0.0058g / ml;
[0026] Step 2. After press filtration, filtrate and washing, the sewage in the first-stage reaction pool is introduced into the second-stage reaction pool, and Na is added to the second-stage reaction pool. 2 The S solution carries out secondary arsenic precipitation, and the pH value of the sewage is adjusted to be 2, and the time is 15 minutes, and the Na 2 The concentration of S solution is 0.058g / ml;
[0027] Step 3, introducing the sewage in the second-stage reaction pool into the third-stage reaction pool after pressure filtration, filt...
Embodiment 3
[0033] Embodiment 3, a method for efficiently removing arsenic from sulfuric acid workshop sewage, comprising the following steps:
[0034] Step 1. Introduce sewage into a section of reaction pool, and add Na to the section of reaction pool 2 The S solution carries out arsenic precipitation once, and the pH value of the sewage is adjusted to be 2, and the time is 47 minutes, and the Na 2 The concentration of S solution is 0.0057g / ml;
[0035] Step 2. After press filtration, filtrate and washing, the sewage in the first-stage reaction pool is introduced into the second-stage reaction pool, and Na is added to the second-stage reaction pool. 2 The S solution carried out secondary arsenic precipitation, and the pH value of the sewage was adjusted to be 2, and the time was 12 minutes, and the Na 2 The concentration of S solution is 0.057g / ml;
[0036] Step 3, introducing the sewage in the second-stage reaction pool into the third-stage reaction pool after pressure filtration, fi...
PUM
| Property | Measurement | Unit |
|---|---|---|
| Concentration | aaaaa | aaaaa |
| Concentration | aaaaa | aaaaa |
| Concentration | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More