600 tons of hospital sewage treatment equipment per day

Hospital sewage is complex in composition, containing pathogens, drug residues, chemical reagents and other special pollutants. If it is not treated properly, it will pose a serious threat to the ecological environment and human health. Shandong Shihong Environmental Protection has been deeply engaged in the field of environmental protection for many years. In view of the particularity and high requirements of hospital sewage treatment, Shandong Shihong has developed and launched 600 tons/day hospital sewage treatment integrated equipment. With efficient treatment capacity, stable operation performance and accurate standard effect, it has become the core solution for sewage treatment in large general hospitals, specialized hospitals and other medical institutions.

I. Overview of equipment core

The equipment is an integrated intelligent sewage treatment equipment independently developed by Shandong Shihong Environmental Protection in combination with the "Water Pollutant Discharge Standard for Medical Institutions"(GB18466 -2005) and the new environmental protection policy requirements. The equipment is designed to treat 600 tons/day, which can be adapted to large hospitals with 800-1200 beds. It can comprehensively treat comprehensive sewage generated by outpatient department, inpatient department, operating room, laboratory department and other departments, covering domestic sewage, medical wastewater, experimental wastewater and other sewage types. After treatment, the water quality can stably reach the national discharge standard, and some indicators can be upgraded to the reclaimed water reuse standard according to demand.
The equipment adopts modular integrated design, which highly integrates pretreatment, core reaction, advanced treatment, sludge treatment, disinfection and sterilization and intelligent control system. Compared with traditional sewage treatment station, the occupied area is reduced by more than 40%. It can flexibly adapt to the existing site layout of the hospital. Whether it is a new hospital supporting or an old hospital upgrading and reconstruction, it can be quickly landed.

II. Core Technology Advantages

1. Accurate pollution control, compliance rate 100%

For the removal of pathogens, organic substances and special pollutants in hospital sewage, the equipment adopts the core process of pretreatment +A/O biological contact oxidation +MBR membrane separation + UV + chlorine dioxide double disinfection. The pretreatment unit removes suspended solids, large particle impurities and part of colloidal substances in sewage through grilles, regulating tanks and sedimentation tanks, reducing the subsequent treatment load; the A/O biological contact oxidation unit deeply degrades COD, BOD, ammonia nitrogen and other organic pollutants in sewage by using efficient microbial flora, with remarkable nitrogen and phosphorus removal effect;MBR membrane separation technology can retain more than 99% activated sludge and pathogens, and the effluent turbidity is lower than 1NTU;* Through UV and chlorine dioxide double disinfection process, completely kill bacteria, parasite eggs and other pathogens in sewage, ensure that the pathogen index of effluent is completely up to standard, and avoid secondary pollution.

2. Intelligent operation and maintenance to reduce management costs

The equipment is equipped with intelligent control system independently developed by Shandong Shihong Environmental Protection. PLC programmable logic controller and Internet of Things technology are adopted to realize automatic operation of the whole process of sewage treatment. The system can monitor key parameters such as influent water quality, flow rate, liquid level of each treatment unit, dissolved oxygen concentration, disinfectant balance, etc. in real time, and automatically adjust aeration intensity, dosage, pump operation status, etc. through intelligent algorithms to ensure that the equipment operates under optimal conditions. At the same time, the system supports remote monitoring and operation and maintenance. Staff can view equipment operation data in real time through mobile APP or computer terminal, receive fault warning information, realize unattended or few people on duty, and greatly reduce manual operation and maintenance cost.

3. Stable and reliable, adapt to complex operating conditions

The core components of the equipment are selected from domestic and foreign brands. For example, MBR membrane is made of PVDF material with strong anti-pollution property, and its service life can reach 3-5 years; the aeration system adopts microporous aeration plate, with oxygen utilization rate of more than 30%, and energy consumption is reduced by 20% compared with traditional aeration mode; the disinfection system adopts intelligent dosing device, which can automatically adjust the dosage of disinfectant according to the inflow flow rate, so as to ensure disinfection effect and avoid chemical waste. In addition, the equipment is equipped with a perfect emergency treatment unit. When the influent water quality or flow fluctuates greatly, the system can automatically start the emergency procedure to ensure the stable effluent water quality by adjusting the liquid level of the regulating tank and starting the standby treatment unit, so as to adapt to the intermittent and complex characteristics of hospital sewage discharge.

4. Green energy saving, practice environmental protection concept

In terms of energy-saving design, the equipment adopts power equipment such as pumps and fans, combined with intelligent frequency conversion control technology, which can dynamically adjust the operating power of the equipment according to the actual treatment load, reducing the energy consumption of traditional sewage treatment equipment by 15%-25%; in terms of sludge treatment, MBR membrane separation technology greatly reduces sludge output, sludge moisture content is lower than 80%, and subsequent sludge disposal costs are reduced by more than 30%; The equipment can also be equipped with biogas recovery devices according to needs to recycle the biogas generated in the anaerobic treatment process, realize energy recycling, and practice the environmental protection concept of“ reduction, harmlessness and resource utilization”.

III. Applicable scenarios and application values

The equipment is suitable for large general hospitals, traditional Chinese medicine hospitals, infectious disease hospitals, orthopedic hospitals, maternity hospitals and other medical institutions, but also can be used in medical parks, physical examination centers and other places that produce similar sewage. Its application value is mainly reflected in three aspects: one is to ensure environmental safety, completely remove pollutants in hospital sewage through efficient treatment, avoid pollution to soil, groundwater and surface water, and protect ecological environment; the other is to ensure public health, thoroughly kill pathogens through double disinfection process, prevent sewage from spreading diseases, and protect public health; Third, it helps the development of hospitals. The intelligent operation and maintenance and energy-saving design of equipment can reduce the environmental protection operation cost of hospitals. Meanwhile, its stable and up-to-standard treatment effect can help hospitals meet relevant requirements such as environmental protection acceptance and grade evaluation, and improve the green development image of hospitals.

IV. After-sales service guarantee

Shandong Shihong Environmental Protection provides a full range of after-sales services for the equipment, including site survey, process customization, equipment installation and commissioning in the early stage, as well as operator training, equipment periodic inspection, fault maintenance, consumables replacement and other services in the later stage. The company has a number of after-sales service outlets throughout the country, promising to respond within 2 hours and solve problems within 24 hours to ensure long-term stable operation of equipment. At the same time, the company also provides equipment upgrading services, which can upgrade and transform equipment technology and control system according to the subsequent environmental protection policy adjustment or hospital development needs, so as to extend the service life of equipment.