Treatment system suitable for small-scale distributed rural domestic sewage

Abstract

The invention discloses a treatment system suitable for small-scale distributed rural domestic sewage. The treatment system comprises an anaerobic baffle plate reactor, a falling dry type constructed wetland and a subsurface flow constructed wetland. The anaerobic baffle plate reactor comprises a black water inlet pipe, a reactor top plate, a biofilm carrier filler, a submersible lift pump, a reactor tank body, a baffle plate, a water distribution partition wall, a grey water inlet pipe, a reactor bottom plate and a water outlet pipe. The reactor top plate is fixedly connected to the top surface of the reactor tank body; the water distribution partition wall is fixedly connected in the reactor tank body and divides the reactor tank body into an anaerobic main reaction zone and a mixed sewage adjusting zone; the biofilm carrier filler and the baffle plate are positioned in the anaerobic main reaction zone; and the baffle plate is connected with the reactor tank body to form an S-shaped flow channel, a water inlet of the water outlet pipe is connected with the submersible lift pump, and a water outlet of the water outlet pipe is located outside the reactor tank body. According to the device, a sewage source separation technology is adopted, so that adverse effects on the process caused by imbalance of the carbon-nitrogen ratio of the inlet water are eliminated.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a treatment system suitable for small-scale distributed rural domestic sewage. Background technique [0002] With the vigorous development of the improvement of the rural living environment, the treatment rate of rural domestic sewage has continued to rise in recent years. Different from the relatively concentrated and intensive treatment mode of urban sewage, the relatively isolated geographical conditions, weak infrastructure, and extensive and messy sewage discharge in villages make centralized sewage treatment difficult, and its complex and changeable water inflow conditions also affect sewage treatment. The application and practice of technology put forward higher requirements. Under this premise, it is imminent to develop a decentralized agricultural pollution treatment system with low energy consumption, high treatment efficiency, easy maintenance and...

AI Technical Summary

Problems solved by technology

In the traditional bio-ecological combined treatment system, the main body of the biological unit uses AO, AAO and other activated sludge processes, and the process treatment effect is greatly affected by the fluctuation of the influent. In the background of low-maintenance management in rural areas, the concentration of microorganisms in the system It is difficult to maintain, and the treatment and disposal of the excess sludge generated in the mud aerobic treatment section has also become a major problem; and when the biofilm process is used as the main treatment process of the biological unit, there will also be slow start of film formation and low enrichment biomass in the system , Abnormal biofilm leads to substandard effluent, etc.

Images