★Scope of application

This process is applicable to wastewater from production lines of polysilicon, monocrystalline silicon, and photovoltaic cell modules.

★Main technical parameters

According to the requirements of the first-level standard of the "Comprehensive Wastewater Discharge Standard" (GB8978-1996), the main specific requirements for wastewater discharge are as follows:
COD≤80mg/L Fluoride≤10mg/L PH=6~9

★Technical features

The raw water first enters the regulating tank to adjust the sewage flow and concentration, and enters the micro-electrolysis redox tower as a pretreatment for coagulation and sedimentation treatment. The effluent enters the intermediate water tank. If the coagulant calcium hydroxide + PAC (polyaluminum chloride) + PAM (polyacrylamide), most of the fluoride and some organic matter can be removed through the sedimentation tank. After the effluent enters the mixing tank to adjust the flow and concentration, it enters the primary sedimentation tank to remove a large amount of suspended solids and some organic matter. The effluent flows into the aerobic tank, and a large amount of organic matter is removed by the explanation of aerobic microorganisms. After sedimentation in the secondary sedimentation tank, the effluent can meet the first-level discharge standard. The sludge in the secondary sedimentation tank is returned to the biochemical system through the sludge pump. The sludge produced after physical and chemical treatment, the sludge in the primary sedimentation tank and the residual sludge in the secondary sedimentation tank are regularly pressed to the sludge thickening tank by static water head. The sludge after gravity concentration is then sent to the filter press by screw pump for dehydration. After dehydration, the filter cake is transported out.

★Company Introduction

Yancheng Hongcheng Chaoyu Environmental Protection Co., Ltd. is a national high-tech enterprise specializing in the research and development, production, sales, installation, commissioning and service of environmental protection and energy-saving equipment such as atmospheric environment treatment, waste gas treatment and sewage treatment. It is a well-known domestic manufacturer, system integrator and general contractor of dust removal, desulfurization and denitrification, ultra-low emission, waste gas treatment and sewage treatment equipment. The various types of dust removal equipment, desulfurization and denitrification equipment, sewage treatment and other environmental protection and energy-saving equipment produced by the company are advanced in technology and reliable in quality. They are widely used in thermal power, coking, garbage power generation, chemical industry, papermaking, steel, metallurgy, carbon, glass, cement building materials and other industries. The products are sold to more than 20 provinces and cities across the country and have been widely praised by customers.

★Factory Appearance

★FAQ

Q. What are the common sewage treatment processes?
A. Common sewage treatment processes include activated sludge method (such as A²/O, oxidation ditch, SBR), biofilm method (such as biofilter, biorotor), membrane bioreactor (MBR), etc. These processes mainly use physical, biological and chemical means to remove organic matter, suspended solids, nitrogen and phosphorus and other pollutants in sewage to achieve standard discharge or water resource reuse.

Q. How is the sludge generated during sewage treatment handled?
A. The sludge generated during sewage treatment needs to be concentrated, dehydrated, stabilized (such as anaerobic digestion) and other treatments to reduce the volume and reduce pollution. The treated sludge can be used as a resource, such as fertilizer, incinerated for power generation, or landfilled. Reasonable disposal of sludge is an important part of ensuring that the entire sewage treatment process meets environmental standards.

Q. Does the sewage treatment plant have a bad smell? How to control the odor pollution?
A. Sewage treatment plants may produce bad smells at water inlets, grit chambers, sludge treatment areas and other places. In order to control the odor pollution, deodorization measures such as sealing facilities, negative pressure collection, chemical washing, biological filters or activated carbon adsorption are usually adopted, and the plant area is reasonably laid out and green belts are set up to reduce the impact on the surrounding environment.