Integrated Wastewater Treatment Equipment Detailed Description

I. Overview

The entire system consists of nine components, controlled by PLC, thereby achieving automated processing and alleviating the normal handling during peak and off-peak water periods. Features of the integrated wastewater treatment equipment:

1. The entire equipment can be buried underground, occupying no land area; it can also be greened above.

Highly purified, the entire system produces minimal sludge.

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

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

Section 2: Process Flow of Integrated Equipment:

III. Process of domestic wastewater treatment and the role of each region:

Domestic wastewater is a low-concentration organic wastewater containing nitrogen, phosphorus, oil污, impurities, etc. It has good biodegradability and is rich in various nutrients. Additionally, the likelihood of heavy metal ion contamination is relatively low. The pH is around 6-9, indicating near-neutral water. Therefore, the A/A/O process can simultaneously remove organic matter. Denitrification and excess phosphorus removal are achieved through the combined functions of an anaerobic pool and an aerobic pool.

Characteristics of A/A/O process:

1. A combination of three distinct environmental conditions—anaerobic, anoxic, and aerobic—and various microbial dust flora, which simultaneously serves 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.

3. Under anaerobic-anoxic-oxic alternating operation conditions, filamentous bacteria will not propagate in large quantities, and the SVI is generally less than 100.

IV. The Functions of Accessories for Each Equipment:

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

2. The function of the regulating pond: Considering the characteristics of domestic water usage, the discharge of water is unevenly distributed over time, mainly occurring during the early morning, midday, and evening, which are peak periods. The regulating pond can balance the uneven water supply, ensuring smooth operation of subsequent treatment processes. A water level controller is set up in the pond, enabling effective automated control.

3. Anaerobic Pond Function: Raw 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 Pond: The water from the Anaerobic Pond flows into the Anoxic Pond for further decomposition of organic matter, and the removal of ammonia, nitrogen, and phosphorus from the wastewater. The clarified liquid at the top of the Anoxic Pond is then transferred to the Contact Oxidation Pond, while sludge is sent back to the Anaerobic Pond through the recycle pipe to increase the concentration and improve the treatment efficiency of the Anaerobic Pond. Once the concentration in the Anaerobic Pond reaches saturation, close the recycle valve and open the valve leading to the Sludge Concentration Pond, allowing sludge to flow directly into the Sludge Concentration Pond.

5. The Function of the Contact Oxidation Tank: After the wastewater from the anaerobic tank flows into the contact oxidation tank and is fully contacted 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 by the action of the blower. The sludge consists of the remains of dead 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 via a sludge pump. The water in the disinfection tank is treated by a chlorine dioxide generator and released after meeting standards. The supernatant from the sludge concentrate tank, after sedimentation, returns to the regulating tank through a recycle pipe. The sludge is then pumped to a plate and frame filter press for treatment, with the filtered water flowing back to the regulating tank through a recycle pipe.

Five, Application Scope 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-sized industrial organic wastewater from activities such as slaughtering and aquatic product processing. The wastewater treated by this equipment meets the national comprehensive discharge standards for wastewater treatment.