Natural composite plant treatment agent for domestic wastewater and preparation method thereof

Abstract

The invention belongs to the field of environmental protection, and particularly relates to a natural composite plant treatment agent for domestic wastewater and a preparation method thereof. The natural composite plant treatment agent for the domestic wastewater takes wormwood, mulberry leaves, black tea, leaves of flos lonicerae and ginkgo leaves as the raw materials, curing liquid is obtained through a curing method, and the natural composite plant treatment agent is finally obtained by conducting secondary fermentation on the curing liquid. The treatment agent is prepared by adopting the purely natural materials as the raw materials, the sources of the raw materials are extensive, the production cost is low, other chemical additives do not exist, the function of a biological reinforcing agent can be achieved, the degradation of pollutants is obviously facilitated, secondary pollution to the environment does not exist, the treatment effect on the domestic wastewater is excellent, various indexes of the treated domestic wastewater can meet the first level (B) emission standard of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), and the natural composite plant treatment agent for the domestic wastewater has extensive promotion significance.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a natural composite plant treatment agent for domestic sewage and a preparation method thereof. Background technique [0002] Domestic sewage contains a large amount of ammonia nitrogen, phosphorus salts, sulfur, microorganisms, pathogens and nutrients. Under the action of anaerobic bacteria, it is easy to produce stench, cause eutrophication of water body and endanger human health. With the development of social economy and the rapid increase of population, the discharge of domestic sewage has increased sharply, and the percentage of sewage discharge has also increased year by year. Domestic sewage treatment has become the focus of water pollution control in my country. [0003] The existing domestic sewage basically enters the sewage treatment plant for treatment, which can generally be classified into physical methods, chemical methods and biological method...

AI Technical Summary

Problems solved by technology

[0003] The existing domestic sewage basically enters the sewage treatment plant for treatment, which can generally be classified into physical methods, chemical methods and biological methods, among which the physical method mainly uses physical action to separate the insoluble substances in the sewage. The chemical properties are not changed in the process, commonly used are gravity separation, centrifugal separation, reverse osmosis, air flotation, etc. The degree of sewage treatment by physical treatment methods is very low, and the treatment effect on domestic sewage is even worse; in addition, there are commonly used chemical The method is to use chemical reaction to treat or recover the dissolved substances or colloidal substances of sewage. Commonly used methods include coagulation method, neutralization method, redox method, ion exchange method, etc., although its treatment effect is good and the speed is fast. , but the cost is very high, and other chemical substances will be introduced during the treatment process, making the treatment of sewage more difficult, so it is generally used for industrial wastewater treatment, and the effect is not good for domestic sewage treatment; in addition, biological The method mainly uses the metabolic function of microorganisms to decompose and oxidize the dissolved or colloidal organic matter in the sewage into stable inorganic substances, so as to purify the sewage. The commonly used methods are activated sludge method and biofilm method. The treatment effect of the above methods Better, but the required treatment space and cost are high, only large-scale sewage treatment plants can be used, and the scope of promotion for domestic sewage treatment is relatively small