Method for processing breeding wastewater through multi-biological-phase zoogloea packing

Abstract

The invention discloses a method for processing breeding wastewater through multi-biological-phase zoogloea packing. The method includes the following steps of firstly, culturing and domesticating multi-biological-phase zoogloea; secondly, processing livestock breeding wastewater. Through the extra-large cation exchange capacity and microbial affinity of the multi-biological-phase zoogloea packing, the perfect combination of physical adsorption removal and biological degradation removal is achieved, and the method has outstanding denitrification capacity; a stable microbial system is formed, the microorganism concentration is tens times higher than that of an activated sludge process, impact load resistant capacity is strong, and basically no residual sludge exists. Running and operating are quite simple and reliable; compared with a conventional biochemical technology, investment is basically equal to or slightly higher than that of other processes, and running cost is reduced by about 90%.

Description

Technical field [0001] The invention belongs to the technical field of ecological and environmental protection, and specifically relates to a method for treating aquaculture wastewater with a multi-biological phase bacteria micelle filler. Background technique [0002] With the development of my country's livestock and poultry industry, the degree of intensive breeding is getting higher and higher, and the environmental problems it brings are becoming more and more significant. Livestock and poultry manure is rich in nitrogen, phosphorus, potassium and rich organic matter. It also contains a lot of volatile substances, pathogenic microorganisms, parasite eggs and heavy metals. If not treated, it will bring great harm to the environment. In 2010, the figures released by the Ministry of Environmental Protection and the Ministry of Agriculture showed that the chemical oxygen demand and ammonia nitrogen emissions of the national livestock and poultry industry reached 11.84 million to...

AI Technical Summary

Problems solved by technology

If the wastewater is directly discharged into the water body or stored in an inappropriate location, surface runoff and infiltration into the water body may cause serious deterioration of surface water or groundwater quality.

Wastewater from livestock and poultry breeding industry contains more nutrients such as nitrogen, phosphorus, and potassium, but if it is applied directly, continuously, and excessively without any treatment, it will cause adverse effects on the growth of soil and crops, such as causing excessive growth of crops , turning green, lodging, greatly reducing the yield, delaying the maturity period, affecting the production of subsequent crops, etc.

A large amount of organic matter in wastewater accumulates continuously in the soil. Although it can provide nutrients and a suitable environment for small animals, insects, fungi, bacteria, etc. that live in the soil, it can also cause a large number of pathogenic bacteria to breed and cause pests and diseases. In addition, the accumulation of a large amount of organic matter will also make the soil strong reducing, and the strong reducing conditions not only affect the root growth of crops, but also easily reduce and release the harmful elements in the soil that were originally inert; a large amount of inorganic salts in the soil Accumulation of salt in crops can cause salt damage