Watermelon peel containing heavy metal adsorbent and preparation method thereof

Abstract

The invention discloses a watermelon peel containing heavy metal adsorbent and a preparation method thereof. The watermelon peel containing heavy metal adsorbent is characterized by being prepared from raw materials in parts by weight as follows: 60-80 parts of watermelon peel, 10-15 parts of rice husk, 5-10 parts of sepiolite powder, 5-10 parts of attapulgite, 3-5 parts of calcium chloride, 0.5-1 part of tannin acid, 3-5 parts of polyethylene glycol, 3-5 parts of sodium carboxymethylcellulose, 0.1-0.2 parts of nonylphenol polyoxyethylene ether, 4-6 parts of an aid and 40-60 parts of water. The heavy metal adsorbent is prepared with the watermelon peel as a main raw material, the heavy metal combination and adsorption capability is high, the adsorption capacity is high, the adsorbent is safe, environment-friendly, non-toxic and harmless, and secondary pollution to the environment is not caused in the wastewater treatment process; besides, the source of raw materials is wide, the price is low, the production cost is effectively reduced, the purposes of energy conservation and waste utilization are achieved, and higher economic benefits, social benefits and environmental benefits are obtained.

Description

technical field [0001] The invention relates to the field of environmental management, in particular to a watermelon rind heavy metal adsorbent and a preparation method thereof. Background technique [0002] With the development of the global economy and society, environmental pollution is becoming more and more serious. Industrial wastewater, as the main source of environmental pollution, has been a major problem that has plagued countries all over the world for a long time. Heavy metal ions in industrial wastewater have strong carcinogenic, teratogenic, and mutagenic effects, which pose a serious threat to human health and the ecological environment. Therefore, it is very important to strictly control the pollution of heavy metal wastewater. [0003] Traditional heavy metal wastewater treatment methods mainly include chemical precipitation, ion exchange, membrane separation, etc. These methods usually have problems such as large investment, high energy consumption, high op...

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Problems solved by technology

[0003] Traditional heavy metal wastewater treatment methods mainly include chemical precipitation method, ion exchange method, membrane separation method, etc. These methods usually have problems such as large investment, high energy consumption, high operating cost, and easy to produce secondary pollution, so their application is limited