Rural domestic sewage biological treatment system

Abstract

The invention belongs to the technical field of sewage treatment, and relates to a rural domestic sewage biological treatment system, particularly a rural domestic sewage biological treatment system which has the advantages of low capital construction and operating cost, small occupied room, convenient operation and management, high sewage treatment efficiency and discharge after reaching the standard. The rural domestic sewage biological treatment system provided by the invention is connected with a rural domestic sewage discharge pipeline. The rural domestic sewage biological treatment system is characterized by comprising an ecological open septic tank, a microaeration oxidation pond, a suspended substance biological filter, an artificial wetland and a scenic pond, wherein the ecological open septic tank, microaeration oxidation pond, suspended substance biological filter, artificial wetland and scenic pond are arranged from high to low and communicated through a pipeline or ditch; the sewage flows under the gravity; and the water inlet of the ecological open septic tank is connected with the rural domestic sewage discharge pipeline. The rural domestic sewage biological treatment system provided by the invention solves the problem of large occupied area, high investment and maintenance cost and the like in other rural sewage treatment methods.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a rural domestic sewage biological treatment system with low infrastructure and operating costs, small occupied space, convenient operation and management, high sewage treatment efficiency and up-to-standard discharge. Background technique [0002] With the development of the economy, a new trend has emerged in my country's environmental pollution: the rapid spread of environmental pollution from cities to rural areas. The main manifestation of rural environmental pollution is sewage pollution. Environmental pollution caused by rural sewage is not only a potential safety hazard in rural water sources, but also aggravates the crisis of fresh water resources, making the irrigation of cultivated land unable to be effectively guaranteed, and endangering the survival and development of farmers. [0003] The main characteristics of rural sewage include: [0004] 1. Rural dome...

AI Technical Summary

Problems solved by technology

[0004] 1. Rural domestic sewage is mainly a mixture of domestic sewage and processed sewage with agricultural products as raw materials. It basically does not contain heavy metals and toxic and harmful substances. It contains a certain amount of nitrogen and phosphorus. It has good biochemical properties, but the water quality and quantity vary greatly. ;

[0005] 2. The population in rural areas is scattered, and most of them have no drainage pipe network, so it is difficult to collect and treat sewage in a centralized manner

[0009] 2. There is no unified sewage collection pipe network;

[0011] 4. There are small factories and workshops in some areas

[0015] 2. Oxidation pond treatment technology, which has problems such as large area occupation, slow speed, and poor sanitary conditions around the oxidation pond;

[0016] 3. Constructed wetland treatment technology, which has limited removal capacity, and the surface wetlands breed mosquitoes and flies in summer, and the odor disperses, etc.;

[0017] 4. Soil infiltration technology, which has problems such as poor denitrification effect, unstable operation, and easy blockage of soil pores

[0018] At the same time, the current decentralized sewage treatment has only initially realized the collection, treatment and discharge of dispersed sewage, and is far from realizing the real purpose of treatment: reuse, that is, on-site treatment and on-site reuse of sewage, and the realization of sewage resources.

Images