Preparation method for regenerative active adsorbent through solid wastes and plants

Abstract

The invention provides a preparation method for a regenerative active adsorbent through solid wastes and plants, and relates to the technical field of material production, in particular to the technical field of adsorbent preparation. The preparation method comprises the following steps: performing high temperature processing on obtained sludge subjected to treatment by a sewage treatment system to obtain granulous solids; mixing the granulous solids with plant wastes, coal slay, calcium lime and black mud, drying, and pressing the mixture to be a massive blank; placing the massive blank into a kiln to be preheated and carbonized, then performing high-temperature catalysis treatment, and cooling to obtain activated carbon. Under the effect of high temperature, the plant wastes of wasted crops are carbonized, pores with different sizes are formed in the surfaces and inner parts of produced finished produces, so that a function of activated carbon is provided; moreover, the carbonized plant wastes are natural activated carbon, and the main component of straw plant ash is potassium carbonate, so that the plant ash wholly shows a strong base and weak acid character, and acidic waste gas can be more efficiently adsorbed and purified.

Description

technical field [0001] The invention relates to the production technology of materials, especially the technical field of preparation of adsorbents. Background technique [0002] All kinds of pollution have seriously affected people's life and health, acid rain and smog, the increasingly severe form of confrontation between man and nature, environmental protection is more and more valued by people today. At present, there are treatment methods for production process sewage, but the water pollution and air pollution generated during pickling. Calcium- and heavy-metal-rich solid waste from sewage treatment has become a problem. A large amount of solid waste cannot be disposed of, so it can only be piled up in a special place, which not only wastes land, pollutes the land, but also causes waste of energy. [0003] Many cities have established sewage treatment systems, which have contributed to the realization of emission reduction goals and the improvement of the water enviro...

AI Technical Summary

Problems solved by technology

But the treatment effect really does not exceed 20%, secondary pollution and waste of resources still exist

[0007] The method of landfill is the most widely used, but the simplest method is the most prone to problems. Seepage after landfill becomes another important source of pollution to groundwater and soil

[0008] On the other hand, there are problems in the disposal and storage of waste such as crop stalks, fruit shells, sawdust, and leaves. Direct incineration will pollute the atmosphere and produce smog

Stacking in the open air is prone to mildew, the waste water produced will pollute the river, and the stench of exhaust gas is unbearable