Method for treating marsh gas and marsh liquid by electrolyte

Abstract

The invention relates to a method for treating marsh gas and marsh liquid by an electrolyte. The method comprises the following steps: (1) introducing the marsh gas to be purified into an oxidizing agent-containing electrolyte for washing, wherein the oxidizing agent comprises sodium hypochlorite and hydrogen peroxide, and the pH of the electrolyte is 6.5 to 7.5; (2) collecting and storing the marsh gas which is treated in the step (1) to obtain the purified marsh gas; (3) refluxing the electrolyte which washes the marsh gas, filtering, and recycling elemental sulphur; (4) treating the marsh liquid by using waste electrolyte, and enabling the waste electrolyte and the marsh liquid to react according to the volume ratio of 1:8 to 10, wherein the reacting time is 40 to 60 minutes. The marsh gas and the marsh liquid are treated by adopting the method provided by the invention, the removal rate of the hydrogen sulphide from the marsh gas is up to 99 percent or above; the marsh liquid is disinfected; the removal rate of COD from the marsh liquid reaches 80 percent or above; the BOD removal rate reaches 85 percent; the ammonium-nitrogen removal rate reaches 92 percent; the marsh liquid which is treated by the method can be directly discharged.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to a method for treating biogas and biogas liquid by using an electrolyte circulation process. Background technique [0002] my country is a big country of energy production and consumption. At the end of the 20th century, my country's energy consumption exceeded 1.4 billion tons of standard coal, becoming the second largest energy consumer in the world. However, due to the small reserves of energy resources in our country, the per capita share is low; Reserves are small, and the degree of security is low. my country's energy resource reserves are about 10% of the world's total reserves, and the per capita resource share is only 40% of the world's per capita share. At present, my country is in a period of rapid economic development. Today, with the acceleration of globalization, the energy consumption of human survival activities is increasing, which will only increase. However...

AI Technical Summary

Problems solved by technology

In my country, biogas slurry and biogas residue are mostly used as agricultural fertilizers, and they are often directly applied to the soil without harmless treatment, which will easily lead to high heavy metal content in the soil, accumulation of toxins, and serious environmental pollution. The long-term use of biogas slurry and biogas residue It will lead to excessive levels of pollutants such as ammonia nitrogen in soil and water

Images