Modified mineral-microorganism coupled water purifying material and preparation method thereof

Abstract

The invention discloses a modified mineral-microorganism coupled water purifying material and a preparation method thereof. The water purifying material is prepared from the following raw materials inparts by mass: 75-85 parts of a carrier material component A, 15-20 parts of a carrier material component B, 5-10 parts of a carrier material component C, 1-3 parts of a modifying agent and 0.1-0.3 part of a microbial preparation. Effects of minerals and effects of microorganisms are coupled into the water purifying material, by Fe3+ and Al3+ which are loaded on the modified carrier body, the surfaces of particles of the carrier material have positive charge, suspended matters with negative charges in polluted water can be adsorbed effectively, and after precipitates are adsorbed, organic pollutants in the precipitates can provide energy for growth of the microorganisms in the early stage; and after organic matters are dispelled completely, under the effect of the microorganisms, the valence state of loaded high-price cations is reduced, along with generation of H+, H+ can be used as biological energy for the microorganisms, therefore, a bottom mud mineralization process is promoted,and finally, a steady-state foundation bed is formed.

Description

technical field [0001] The invention relates to a water purification material, in particular to a modified mineral-microbe coupling water purification material and a preparation method thereof. Background technique [0002] With the gradual deepening of domestic urbanization, especially a large number of extensive engineering construction at the end of the last century, the infrastructure of many cities, especially the drainage facilities, is not perfect, and because the urban inland rivers pass through urban residential areas, commercial circles and other buildings As a result, urban inland rivers have become the main channel for pollutant discharge, while catchment lakes have become the main place for pollutants to gather. Long-term pollution accumulation has continuously weakened the environmental carrying capacity of rivers and lakes, and the water environment has gradually deteriorated seriously, affecting the image of the city and the lives and health of surrounding re...

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Problems solved by technology

[0004] Chinese patent document CN 106335939 A provides "A Preparation Method of Water Purification Material", which uses an inorganic adsorption material mainly composed of activated carbon and a polymer modifier mainly composed of polypropylene, and is spun into a fiber membrane for use. It is a filterable water purification material, but there are problems such as easy clogging, difficulty in recycling, and short service life.

Chinese patent document CN104628123 B provides "A Modified Bio-slag Microbial Carrier and Its Preparation Method", which uses carbon-containing bio-slag as a raw material, and prepares a carbon-sourced modified bio-slag carrier through combined modification of inorganic acids and organic matter. However, the composition and mineral forms of bio-slag are complex, and there are great safety hazards without rinsing

Chinese patent literature CN 104857930 A provides "A kind of production method of special modified mineral material for black and odorous river courses", the modified agent used is calcium nitrate, lanthanum chloride, polyferric chloride, polyaluminum chloride, there are relatively big security risk

Chinese patent document CN 104276670 A provides "a kind of sewage treatment agent containing natural minerals and its preparation method", with clinoptilolite, kaolinite, clay minerals with high cation exchange capacity, quartz sand, volcanic ash, rice wheat stone as the The main raw materials are mainly in the form of adsorption and precipitation to purify water quality, which has the problem of water quality rebound and the problem that organic pollution in sewage is difficult to eliminate

During use, the floc formed by residual polyacrylamide and polychloride floats in the water body, and it will cause serious secondary pollution if it is not cleaned up.

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