Integrated Sewage Treatment Plant Overview
Kairun integrated sewage treatment plant is a fully integrated, skid-mounted or buried wastewater treatment device designed for decentralized sewage scenarios. Different from traditional scattered sewage treatment facilities with separated pools and discrete equipment, this all-in-one sewage treatment unit integrates all core functional modules inside a single sealed tank body, realizing complete wastewater purification from raw water inflow to standard-compliant discharge. This product update focuses entirely on structural optimization, process upgrading, operational stability and cost reduction, delivering a high-reliability sewage treatment equipment solution for domestic sewage and low-concentration organic wastewater.
Integrated Modular Structure Design
The overall structure of the integrated sewage treatment plant adopts a fully enclosed modular integrated design. The whole equipment is manufactured and assembled in the factory as a complete unit, avoiding on-site welding, partial assembly and mismatched pipeline problems that commonly occur in traditional sewage projects.
The internal tank body is divided into multiple independent functional areas in sequence: regulating area, anaerobic reaction area, anoxic denitrification area, aerobic biochemical area, secondary sedimentation area and disinfection area. Each functional zone is scientifically partitioned through baffle and flow guide structure, ensuring stable water flow gradient, sufficient sewage residence time and no short-circuit water flow.
The compact internal layout greatly reduces the overall floor space, while the buried installation mode allows the equipment to be placed underground, leaving the ground space for greening and other purposes, which greatly improves the site utilization rate.
Tank Body Material and Anti-Corrosion Performance
In terms of body material and anti-corrosion performance, the equipment adopts high-quality carbon steel thickened plate or fiberglass reinforced plastic (FRP) tank body according to different usage environments.
The carbon steel body undergoes multi-layer anti-corrosion treatment including sand blasting, anti-rust primer, intermediate anticorrosive paint and weather-resistant finish paint. The internal anti-corrosion layer is specially reinforced to resist long-term erosion of sewage, microorganisms and chemical substances.
The whole machine has excellent waterproof, anti-rust and anti-aging performance, adapting to humid underground environment, outdoor severe weather and long-term continuous water immersion operation. Compared with ordinary simple sewage treatment equipment on the market, our integrated tank body has stronger structural rigidity, no deformation, no water leakage and no cracking after long-term operation.
Optimized A2/O Biochemical Treatment Process
The core treatment process of the equipment adopts optimized A2/O biochemical treatment technology, which is the most mature and stable process for decentralized sewage treatment. The entire wastewater treatment workflow is systematic and sequential, covering full-process physical filtration, biochemical degradation, mud-water separation and terminal disinfection, ensuring layered, thorough and stable water purification.
Each independent tank area undertakes exclusive professional treatment tasks, with clear division of labor and linked operation, and the detailed treatment flow of each pool is as follows.
Regulating Tank
The regulating tank is the first-stage processing unit, responsible for collecting and storing incoming sewage. It effectively balances the unbalanced water inflow and fluctuating water quality caused by peak water consumption and intermittent drainage, buffers the impact load on subsequent biochemical facilities, stabilizes the overall operating load of the equipment, and removes large suspended particles and floating impurities through preliminary precipitation to avoid pipeline blockage.
Anaerobic Tank and Anoxic Tank
The anaerobic tank is mainly used for hydrolytic acidification treatment of sewage. Under oxygen-free conditions, anaerobic microorganisms decompose macromolecular organic substances, grease, colloids and insoluble pollutants in the sewage into small-molecule soluble substances, greatly improving the biodegradability of wastewater, and creating favorable water quality conditions for the subsequent denitrification and aerobic biochemical reaction.
The anoxic tank focuses on biological denitrification treatment. With the carbon sources in the sewage as energy supply, denitrifying bacteria reduce nitrate and nitrite nitrogen generated by aerobic nitrification into nitrogen gas, which is volatilized into the air, thoroughly removes total nitrogen from the sewage, and solves the problem of excessive nitrogen content in domestic and decentralized sewage.
Aerobic Biochemical Tank
The aerobic biochemical tank is the core purification unit of the whole equipment. Through continuous and uniform oxygen supply from the aeration system, a large number of domesticated aerobic microorganisms propagate stably in the tank.
These microbial flora can efficiently adsorb and decompose organic pollutants in sewage, effectively reduce COD and BOD indicators, and complete biological phosphorus removal by absorbing excess phosphorus in the water, realizing deep purification of sewage.
Secondary Sedimentation Tank
The secondary sedimentation tank adopts an inclined tube sedimentation structure, which relies on gravity to separate mud and water.
The activated sludge suspended in the biochemical mixed liquid fully settles at the bottom of the tank, the clear water floats upward, and the settled sludge is automatically refluxed to the anaerobic and anoxic tanks through the sludge reflux pump to supplement microbial concentration, maintaining the long-term stability of the biochemical system.
A small amount of residual sludge enters the sludge digestion area for degradation.
Disinfection Tank
The final disinfection tank is the terminal treatment unit of the equipment.
After the clarified clean water enters the tank, efficient disinfection substances act on the water body to kill harmful microorganisms such as Escherichia coli and total bacteria, ensuring that the effluent completely meets international discharge and reuse standards.
This step-by-step closed-loop treatment process avoids incomplete purification and water quality instability of traditional simple equipment, achieving stable and long-term efficient sewage treatment effect.
Automatic Operation and Standardized Supporting Configuration
This integrated sewage treatment plant is equipped with a complete set of standardized supporting configurations to ensure full-automatic and stable operation.
The built-in low-noise aeration fan provides uniform oxygen supply for the aerobic area, with adjustable aeration volume, which avoids insufficient oxygen or excessive aeration waste.
The matched self-priming water pump and reflux pump realize automatic water inflow and sludge circulation without manual water distribution.
The whole machine is equipped with a physical filtering device and impurity interception structure to prevent large particles of sundries from entering the tank and blocking pipelines and pumps.
All internal pipelines and valves are made of anti-corrosion plastic and stainless steel materials, which are durable and not easy to age and damage.
The standardized and complete supporting configuration makes the equipment have strong operational stability and low failure rate in long-term continuous operation.
Environmental Protection Performance and Low Maintenance Cost
In terms of environmental protection performance, the fully sealed tank body design completely isolates the internal sewage and microbial fermentation gas from the outside world.
The equipped deodorization device can effectively treat odor gas, avoiding odor overflow and air pollution around the site.
The equipment has a built-in sludge reduction system.
Through long-term microbial endogenous respiration and degradation reaction, most of the excess sludge is digested and reduced, which greatly reduces the output of residual sludge.
Users only need simple sludge cleaning and disposal regularly, which saves a lot of sludge transportation and treatment costs.
The treated effluent has stable indicators, which can fully meet international and local environmental discharge standards, and can be reused for landscape water replenishment, greening irrigation and factory cleaning, realizing water resource recycling.
Customized Production and Application Range
This integrated sewage treatment plant supports full-specification customized production to adapt to different sewage treatment capacities and water quality conditions.
We can customize equipment with daily treatment capacity from 5 cubic meters to 500 cubic meters according to user demand.
For special wastewater containing high-concentration organic matter, oil stains and a small amount of suspended impurities, we can adjust the internal process structure, increase pretreatment facilities and strengthen biochemical configuration to ensure stable treatment effect.
The equipment is suitable for residential community domestic sewage, rural centralized sewage, hotel and catering sewage, scenic spot sewage, campus sewage and small and medium-sized factory domestic wastewater, with wide application range and strong product adaptability.
Quick Installation and Long-Term Economic Benefits
Different from traditional civil-built sewage pools with long construction period and complicated maintenance, our integrated sewage treatment plant realizes factory integral production and on-site quick installation.
After the equipment is transported to the site, it only needs foundation leveling, hoisting in place, pipeline connection and power debugging to be put into use quickly.
The product features compact structure, stable performance, simple operation, low energy consumption and low later maintenance cost, which is an ideal high-efficiency and economical sewage treatment equipment for decentralized environmental protection treatment projects.
