Technical quotation for sewage treatment equipment at Benxi Eye Hospital in Liaoning Province

Technical quotation for sewage treatment equipment at Benxi Eye Hospital in Liaoning Province

1、 Principles of Handling

1. Principle of whole process control. Control the entire process of hospital wastewater generation, treatment, and discharge.

2. Principle of reduction. Strictly implement the hospital's internal hygiene and safety management system, and strictly control and separate sewage and waste sources. Domestic sewage and ward sewage are collected separately in the hospital, that is, source control and clean sewage separation.

It is strictly prohibited to dispose of hospital sewage and waste into the sewer system at will

3. Principle of on-site handling. To prevent pollution and harm during the transportation of hospital sewage, on-site treatment must be carried out in the hospital.

4. Classification guidelines. Classify and guide hospital sewage treatment based on hospital nature, scale, sewage discharge destination, and regional differences.

5. The principle of combining compliance with risk control. Comprehensively consider the basic requirements for sewage discharge standards in comprehensive hospitals and infectious disease hospitals, while strengthening risk control awareness, and improving the ability to respond to emergencies from the aspects of process technology, engineering construction, and supervision and management.

6. Ecological security principle. Effectively removing toxic and harmful substances from sewage, reducing the production of disinfection by-products during the treatment process, and controlling excessive residual chlorine in the effluent to protect ecological environment safety.

2、 Handling method

Aerated biofilter method for hospital wastewater treatment

Hospital sewage mainly comes from the discharge of sewage from diagnosis and treatment rooms, wards, laboratories, operating rooms, laundry rooms, administrative departments, canteens, dormitories, etc. The main pollutants are organic pollutants, pathogenic microorganisms, and viruses. The hospital sewage is currently discharged only through grid slag removal and disinfection treatment, using chlorine dioxide disinfectant. The residual chlorine and bacteriological indicators can meet the standards, but the organic matter has not been removed. In order to fully meet the standards, the hospital has added an aerated biofilter sewage treatment process to treat sewage. Considering the limited land occupation of the hospital's sewage treatment plant and the presence of a certain amount of disinfectant in the water, it has been decided to adopt the aeration biofilter process with high load, small land occupation, and adaptability to the range of influent organic matter concentration.

Weifang Shanshui Environmental Protection Machinery Manufacturing Co., Ltd

【 * Provide high-quality and affordable online consultation 】

【 Fully qualified water related approval processing effect meets emission standards 】

On site inspection of physical manufacturers with complete qualifications for water related permits

【 Solve your difficult and complicated problems 】

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【 Equipment origin: Weifang, Shandong 】

Headquarters Address: 517 Xingle Road, Yinhe Street, Lebushan Economic Development Zone, Weicheng District

All members of Weifang Shanshui Environmental Protection welcome new and old customers to inquire and conduct on-site inspections

The biological aerated filter has the following characteristics:

(1) High organic load and less land occupation

(2) Large biomass, high activity, strong impact resistance

(3) Has dual functions of biodegradation reaction and filtration, without the need for a secondary sedimentation tank

(4) Due to the cutting effect of the filter material, the oxygen utilization rate is high

(5) Stable and reliable operation, easy management

Chlorination method for hospital wastewater treatment

(1) Sodium hypochlorite method. Sodium hypochlorite is a common chemical reagent that is easy to transport, store, and purchase. Sodium hypochlorite dissolves in water to produce hypochlorite ions, which can be used for disinfection and sterilization. However, it is unstable, prone to decomposition under light and moisture, and has weak disinfection ability.

(2)Liquid LVThe law.Liquid LVIt can rapidly produce hypochlorite ions in water. This method has been widely used in hospital sewage disinfection.Liquid LVThe effective chlorine content is 5-10 times higher than that of sodium hypochlorite solution, with strong disinfection ability and cheaper price. Due toLV gasIt is a highly irritant and toxic gas, so storage devices should be used for storage.

(3) Chlorine dioxide method. Chlorine dioxide is a strong oxidant that can kill bacteria, reproductive organisms, fungi, viruses, and more. Research has shown that after chlorine dioxide dissolves in water, 50% -70% of it is converted into hypochlorite ions and chlorite ions, which can damage red blood cells and interfere with human healthdianAbsorption can also increase blood levels. Therefore, currently the first two methods are generally used to treat hospital wastewater.

3、 Reasons for poor sewage treatment in hospitals

The chemicals used for classifying wastewater are highly targeted in order to reduce costs. As a result, the treatment of various types of wastewater is good, but the comprehensive water treatment still does not meet the standards.

2. Use a large amount of lime to ensure clear water quality and reduce costs. However, it generates a large amount of sludge, often accounting for 30% to 40% of the cost of wastewater treatment.

3. The pH value of the incoming water changes greatly, and the pH control of the reaction tank is unstable. Unstable pH causes turbidity in the sedimentation tank. The effluent quality is also unstable, sometimes good and sometimes bad.

4. Water treatment personnel lack a strong sense of responsibility, operate with insufficient care, and do not pay attention to details. For example, if there is a problem with the incoming water, do not stop the machine in time for emergency treatment. Various instruments and probes are not regularly calibrated and cleaned. The concentration of the prepared drug was not prepared according to the process requirements, and in order to save time, the concentration was increased without authorization.

Before surface treatment of products in the surface treatment industry, a large amount of pre-treatment must be carried out, and the oil removal powder used contains emulsifiers. The large amount of emulsifiers not only affects the COD content, but also affects the coagulation of alum flocs in the sedimentation tank, resulting in poor sedimentation and a large amount of suspended solids flowing out of the sedimentation tank with the upper layer of clean water. When the pH is adjusted, they dissolve back into the water, resulting in excessive heavy metal ions at the discharge outlet.

Technical quotation for sewage treatment equipment at Benxi Eye Hospital in Liaoning Province