Modular integrated process method suitable for cow breeding wastewater treatment

Abstract

The invention particularly relates to a modular integrated process method suitable for cow breeding wastewater treatment. Aiming at the problem of high-concentration organic wastewater generated in the breeding process of urban and rural distributed cow breeding farms, process integration and parameter design are carried out, and the integrated process is composed of a solid-liquid separation module, a first-level physicochemical module, a second-level biochemical module and a third-level advanced treatment module. The solid-liquid separation module comprises a side flow centrifugal filter and a cyclone separator; the first-level physicochemical module is used for adjusting homogeneous polymerization and flocculation floatation functions; the second-level biochemical module is provided with an anaerobic submodule and an aerobiotic submodule which are arranged in series; the third-level advanced treatment module is mainly provided with an active sand filtering submodule and an ultraviolet disinfection submodule. The process has the advantages of being flexible, efficient, convenient, intelligent and the like, and is capable of ensuring economical, effective and stable operation of wastewater treatment facilities.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a modular integrated process method suitable for dairy cow breeding wastewater treatment. Aiming at the problem of high-concentration organic wastewater treatment in the breeding process of decentralized dairy farms in urban and rural areas, process integration and parametric design are carried out to realize process modularization, intelligence, and integration. Background technique [0002] Traditional small-scale dairy cow breeding wastewater can be used as fertilizer for crops. With the acceleration of urbanization and the increase in demand for dairy products, traditional breeding methods can no longer meet the demand for dairy products. Intensive dairy cows Farms have gradually developed, but such small dairy farms are still operated as family or cooperative farms, and are still distributed in vast rural areas without a centralized scale. The organi...

AI Technical Summary

Problems solved by technology

The quality of dairy cow breeding wastewater is related to the structure of the barn, the way of cleaning manure, the use of flushing water, the nutrient content of the feed and production management. The water contains a large amount of organic matter, nitrogen, phosphorus, suspended matter, pathogenic bacteria, heavy metal elements, residual veterinary drugs Components such as protein and fat generally have the following properties: (1) Wastewater contains some feces and urine, with high organic matter content, high suspended solids concentration, high ammonia nitrogen concentration, and darker chroma; (2) Wastewater contains a large amount of The B / C of waste water is generally 0.35-0.6, and the biodegradability is good; (3) The solid residues in waste water are mainly organic substances. If effective solid-liquid separation is not carried out, the follow-up treatment load will be increased. It is more difficult and affects the treatment effect; (4) Wastewater contains toxic pollutants, such as heavy metals, residual veterinary drugs and a large number of pathogens, etc., and discharge into the environment without treatment will cause serious pollution to the ecological environment

Images