Method for preparing chemical active filtering absorptive material and method for intensify water treatment thereby

Abstract

The way to produce active attaching dose and the way of handling by strong water, concerns the way of produce active attaching dose using mire in the mire handling craft and the technique of strengthen water handling using the active attaching dose. The way to get the active attaching dose: handling the living dirty water to the solid-liquid separating thing, and filter them to separate the mire and water; heat the mire after filtered, crash them to grains; dip the grains into the acid, finish activating by mixing; heat, crash, then the active attaching dose is made. The way to strengthen the water by active attaching dose is: put the original water into the mixing pond, reaction pond, filtering pond, disinfecting pond, adding chemical dose into the mixing pond, adding mud attaching dose into the reaction pond. The mud attaching dose hydrochloric acid' fusing rate can attain round to 0.25%, NaOH's fusing rate is around 1.05%, after filtered the mud missing rate increase 10%--50%, organic pollution matter missing rate increase 10%--40%.

Description

Technical field: [0001] The invention relates to a method for preparing a chemically active filtering and adsorbing material by using sludge produced in a process of chemically strengthening sewage treatment, and a technology for using the filtering and adsorbing material to perform micro-polluted water strengthening treatment. Background technique: [0002] At present, the treatment process commonly used in urban water treatment in my country is: coagulation→sedimentation→filtration→disinfection multi-level barrier process flow. Among them, coagulation and filtration are the key links to ensure water quality. Studies have shown that in the process of filtration, the increase of organic matter in the water causes the filter material in the filter to be contaminated by organic matter, and loses the adsorption and retention of colloidal impurities, resulting in the filtration as a key barrier in the process. The role of the filter is greatly weakened, causing turbidity. In the fil...

AI Technical Summary

Problems solved by technology

Currently widely used filter materials such as quartz sand have problems such as small specific surface area, low porosity, and low surface adsorption capacity.

At the same time, because the surface of the quartz sand filter material is negatively charged, the surface of the impurities and organic matter in the water is generally negatively charged, and the electric repulsion makes the interception ability greatly limited. This situation is more obvious under the condition that there are many organic matter.