Wastewater Treatment Plant Process Design

The construction and operation of sewage treatment projects are costly and constrained and influenced by various factors. Among them, the optimization and selection of sewage treatment process proposal have a particularly critical impact on the investment and operation management of sewage treatment. Therefore, it is necessary to start from the perspective of overall optimization, comprehensively consider the properties of sewage and the requirements for treated effluent, and propose the best sewage treatment process plan. 

Principles of wastewater treatment plant process selection:

(1) The process technology is required to be advanced and mature, with high safety, strong oxygenation capacity, high dissolved oxygen concentration, strong oxidation ability, high oxygen utilization rate, and reliable operation, meeting the requirements for treating effluent.

(2) Convenient operation and management, flexible operation, and corresponding impact resistance and adaptability to changes in inflow and water quality.

(3) Economically reasonable, saving infrastructure investment and operational management costs while meeting processing requirements.

(4) The process supporting equipment has advanced technology, reliable quality, small footprint, low investment, and good treatment effect.

(5) The automation control of the process is reasonable and reliable, reducing labor intensity.

(6) The selection of sludge treatment process and equipment should consider operational flexibility to improve the operability of the sludge treatment process.

A2/O Technical Process

sewage treatment plant adopts A2/O process, which ensures the removal effect of COD, ammonia nitrogen, total nitrogen and also strengthens the removal effect of phosphorus.Sewage treatment plant  adopts biofilm process, where microorganisms mainly grow on spherical fillers, which can achieve the separation of hydraulic retention time and sludge retention time, and help to enrich the specialized functional microorganisms which have a long generation time and a good treatment effect, and the biofilm is microbial aggregation with certain thickness, and compared with activated sludge method, biofilm method is more resistant to shock load and the operation of the equipment is more stable. Sewage treatment plant adopts the design concept of low volumetric loading, and the hydraulic retention time is more than 24 hours, which helps to increase the microbial self-oxidizing ability, and improves the quality of the effluent while reducing the production of residual sludge, and reduces the cost of sludge treatment and the cost of construction of sludge tanks. SMC sewage treatment tank is simple and unmanned operation, the use of Internet of Things technology can realize remote mobile management to save operation and maintenance labor costs.