Nano highly effective amendment for sludge dehydration

Abstract

The present invention discloses one kind of Z's nanometer efficient sewage dewatering amendment. The Z's nanometer efficient sewage dewatering amendment consists of polymerized ferric sulfate 85-98 weight portions, polyacrylamide 0.5-6 weight portions, hydroxymethyl cellulose sodium 0.5-6 weight portions and nanometer material 0.5-3 weight portions. The present invention has powerful neutralizing capacity, bridging capacity and permeating capacity and thus has high sewage dewatering effect.

Description

technical field [0001] The invention relates to a Z's nano high-efficiency sludge dewatering conditioner. Background technique [0002] Sludge treatment is an easily overlooked but very critical treatment unit in sewage treatment. The key to sludge treatment is sludge dehydration. There are roughly four forms of water in sludge. 1. The water that exists between sludge particles Interstitial water, called interstitial water or free water, accounts for about 65-85% of the sludge moisture; 2. It exists in the capillary between sludge particles, called capillary water, accounting for about 15-20% of the sludge moisture; 3. A part of the water adsorbed on the sludge particles is called adsorbed water. Because the sludge particles are small, they have strong surface adsorption force; 4. Bound water is the chemically bound water inside the particles, and only the internal structure of the particles can be changed. to separate the bound water. Adsorbed water and bound water genera...

AI Technical Summary

Problems solved by technology

Adsorbed water and bound water generally account for about 10% of the total water content of sludge. Since the water content of sludge in sewage treatment is above 98%, sludge concentration is generally considered first, which is to reduce the water content of sludge and reduce the subsequent sludge. It is an effective method to deal with the cost and difficulty. When the water content of the sludge is concentrated from 99.5% to 98.5%, the volume can be reduced to 1 / 3 of the original volume, and when it is concentrated to 95%, the volume of the sludge is only 1 / 10 of the original volume. The dehydration object of mud concentration is interstitial water, which accounts for 70% of the sludge moisture. The solid matter in the sludge is mainly colloidal particles, which have a strong affinity with water. Without proper pretreatment, the sludge particles will change their physical and chemical properties. Destroying the colloidal structure of sludge, reducing its affinity with water, thereby improving the dehydration performance, it is difficult to achieve the purpose of dehydration. Currently, the method of adding drugs is widely used at home and abroad because it is economical, practical, simple and convenient.