Integrated Wastewater Treatment Equipment Detailed Description

I. Overview

The entire system consists of nine parts, controlled by a PLC, thereby achieving automated processing and also alleviating the normal handling during peak and low water flow periods. Features of the integrated wastewater treatment equipment:

1. The complete set of equipment can be buried underground, occupying no land area; it can also be greened above ground.

2. High degree of purification, the entire system produces less sludge.

High level of automation, low energy consumption, easy management, and minimal staff required.

4. Low noise generation, minimal odor, and minimal impact on the surrounding environment.

Two, Process flow of integrated equipment:

Section 3: Process of Domestic Wastewater Treatment and the Role of Each Area:

Domestic wastewater is a low-concentration organic waste containing nitrogen, phosphorus, oil, impurities, etc. It has good biodegradability and a comprehensive range of nutrients. Additionally, the likelihood of heavy metal ion contamination is relatively low. The pH level is around 6-9, indicating near-neutral water. Therefore, the A/A/O process can simultaneously remove organic matter. The denitrification process, excess phosphorus removal, and other functional denitrification, along with the aerobic pool, collectively accomplish the phosphorus removal function.

Characteristics of A/A/O process:

1. A synergistic combination of anaerobic, anoxic, and aerobic environmental conditions with different types of dust microbial populations, featuring the capability to remove organic matter, denitrify, and dephosphorize.

2. The denitrification process is straightforward, with a total hydraulic retention time that is less than that of similar other processes.

Under anaerobic-anaerobic-aerobic alternating operation conditions, filamentous bacteria will not proliferate in large quantities, and the SVI is generally less than 100.

IV. The Functions of Accessories for Various Equipment:

1. The function of the grille well is to isolate suspended solids and impurities from wastewater to prevent affecting the subsequent treatment of the equipment.

2. The role of the regulating pond: As the water used for daily life has varying discharge volume throughout different time periods, the discharge typically occurs during the morning, afternoon, and evening, with these three periods being peak times. The regulating pond can balance the uneven supply of water, ensuring the later treatment processes run smoothly. A water level controller is set up in the pond to effectively implement automated control.

3. Anaerobic Pond Function: Wastewater is introduced into the anaerobic pond, where it is thoroughly mixed with anaerobic bacteria by the action of a mixer. The anaerobic pond decomposes microorganisms and organic matter in the wastewater, producing substances such as CO2 and methane.

4. The role of the Anoxic Tank: The water from the Anaerobic Tank flows into the Anoxic Tank for further decomposition of organic matter and the removal of ammonia, nitrogen, and phosphorus from the wastewater. The clarified liquid from the upper layer of the Anoxic Tank is then transferred to the Contact Oxidation Tank, while sludge is sent back to the Anaerobic Tank via the return pipe, thereby increasing the concentration in the Anaerobic Tank and enhancing its treatment efficiency. Once the Anoxic Tank reaches its saturation point, close the return valve and open the valve leading to the Sludge Concentration Tank, allowing sludge to flow directly into it.

5. The function of the Contact Oxidation Tank: After the wastewater from the anaerobic tank flows into the contact oxidation tank and fully contacts with the oxidizing bacteria (three-dimensional elastic media) in the tank, the wastewater is decomposed into CO2 and H2O. The CO2 in the water is then expelled through the action of the blower. The sludge consists of the dead bodies of the bacteria.

6. The second sedimentation tank allows for a secondary sedimentation of the water in the contact oxidation tank. The clarified water flows into the disinfection tank, while sludge is pumped to the sludge concentration tank. The water in the disinfection tank is treated by a chlorine dioxide generator and released upon meeting standards. The supernatant of the sludge concentrate tank, after sedimentation, is returned to the regulating tank via a return pipe. The sludge is pumped to a plate and frame filter press for processing, and the filtered water flows back to the regulating tank through a return pipe.

Section 5: Application Range of Integrated Sewage Treatment Equipment

Integrated wastewater treatment equipment is suitable for residential communities, villages, townships, office buildings, shopping malls, hotels, restaurants, schools, highways, railways, factories, mines, tourist attractions, and other similar small and medium-scale industrial organic wastewater from activities like slaughtering and aquatic product processing. The treated wastewater meets the national comprehensive discharge standards for wastewater treatment.