Customized sewage treatment equipment for hospitals in Luohe City

Medical wastewater treatment plan

1. Overview: With the increasing attention of the country to environmental protection and people's concern about the environmental situation, sewage discharge standards are becoming increasingly strict. Medical institution sewage contains a large amount of pathogenic microorganisms and toxic substances, which, if not effectively treated, will cause pollution to the surrounding environment. So whether the sewage treatment of medical institutions meets the standards will be an important basis for whether medical institutions can be established. The laboratory wastewater is a low concentration wastewater containing a small amount of pollutants such as blood and disinfectants, and the pollutants contain a certain amount of bacteria. If the wastewater is directly discharged into the water body without treatment, it will cause a certain degree of pollution to the surrounding water and soil, thereby endangering people's health. The laboratory attaches great importance to the treatment of sewage and has decided to install new sewage treatment facilities in accordance with the requirements of the local health and environmental protection departments. Our company has been commissioned by the laboratory to develop the following design plan for the treatment of the wastewater.

According to the "Pre treatment Standards for Water Pollutant Discharge in Medical Institutions", the discharge of medical wastewater should meet the following standards:

1. Take 500ml samples for inspection for three consecutive times, and no intestinal pathogenic bacteria and tuberculosis bacilli shall be detected.

2. The total number of coliforms per liter shall not exceed 5000. 3. The total residual chlorine content is 4-5mg/L.

4. The contact time between sewage and disinfectant shall not be less than 30 minutes to 1 hour

All medical wastewater in medical institutions must be input into the treatment tank through pipelines for disinfection before being discharged. The sewage treatment equipment must meet the following requirements: 1. It should be located far away from the treatment and reception areas and designed in a relatively concealed place. 2. There are anti-corrosion and leak proof facilities. 3. Ensure processing effectiveness, safety, and durability.

4. Easy to operate, convenient for disinfection and cleaning, and beneficial for the safety of operators.

Our company has designed a small-scale medical sewage treatment equipment based on the characteristics of small available area and low sewage volume of the medical institution. The equipment adopts a filtration and disinfection treatment process, which has the advantages of high automation, small footprint, no noise, no secondary pollution, easy installation, simple maintenance, and easy compliance. It has been widely used in sewage treatment projects such as medical laboratories, animal hospitals, medical comprehensive clinics, and dental clinics.

2. Design Scale and Standards 2.1 Design Scale

According to the relevant information provided by the laboratory, the maximum designed drainage capacity is 2m3

/d. The design processing time is 8 hours, and the processing water volume is 0.25m3

/h. 2.2 Design inlet water quality

Design the inlet water quality for sewage treatment (referring to the water quality of similar clinics), which is the medical sewage quality of the clinic, as follows:

CODcr ≤250mg/L BOD5 ≤100mg/L SS ≤60 mg/L Fecal coliforms ≤ 3 × 104/L pH 6-9 2.3 Designed effluent quality

According to the requirements of the project party, the treated water quality is required to meet the pre-treatment standards in Table 2 of the "Discharge Standards for Water Pollutants in Medical Institutions" (GB18466-2005). The main designed effluent indicators are as follows:

COD ≤250mg/L BOD5 ≤100mg/L SS ≤60 mg/L PH 6-9 fecal coliform count ≤ 5000MPN/L

2.4 Design Scope

Scope of sewage treatment area: Buildings (including overall layout) and supporting design between the inlet of sewage treatment equipment and the discharge outlet of sewage treatment equipment. The wastewater inlet and outlet pipes outside the sewage treatment equipment, as well as the power supply lines of the electrical control box, are not included in this plan. 2.5 Design Principles

1. Adopt * technology, new equipment, reduce investment, save energy consumption, and lower operating costs;

2. Reasonable process and equipment layout, compact structure, and small footprint are required; 3. Easy to operate, maintain and manage, with simple technical requirements, suitable for * use.

2.6 Design Basis

1. Water quality and quantity parameters provided by the owner;

2. "Discharge Standards for Water Pollutants in Medical Institutions" (GB18466-2005); 3. Surface Water Environmental Quality Standards (GB3838-2002); Design Code for Outdoor Drainage Engineering (GBJ14-87); 5. Design Code for Outdoor Water Supply (GB50013-2006); 6 "Code for Design of Water Supply and Drainage Engineering Structures" (GB69-84); 7 "Standard for Environmental Noise in Urban Areas" (GBJ3096-93);

8 "Handbook for Water Treatment Engineers" and "Technical Handbook for Three Waste Treatment Engineering"; 9 Relevant laws and regulations.

Wastewater treatment process and description 3.1 Process description

Based on past engineering experience and the regulations of water pollutant discharge standards in medical institutions, filtration and disinfection processes are adopted to purify sewage. The process route for the sewage treatment project is determined as follows:

Medical wastewater → filtration → disinfection → discharge treatment process description:

The medical wastewater collected in the laboratory flows automatically into the contact disinfection tank, and after filtration and disinfection, it meets the standard and is discharged into the urban sewage pipe network.

3.2 Process selection

Removal of Escherichia coli and viruses

According to the "Design Specification for Hospital Wastewater Treatment", medical wastewater must be disinfected using chlorine, ozone, and ultraviolet radiation with strong disinfection capabilities, which can kill Escherichia coli and viruses in the wastewater in a relatively short period of time.

The principle of ozone disinfection is that ozone is a strong oxidant, and the sterilization process belongs to biochemical oxidation reactions There are three forms of O3 sterilization:

Ozone can oxidize and decompose the enzymes required for glucose inside bacteria, leading to their inactivation and death 2. Directly interact with bacteria and viruses, destroy their organelles and DNA, RNA, disrupt bacterial metabolism, and lead to bacterial death

3. Through the cell membrane tissue, it invades the cell and acts on the lipoproteins on the outer membrane and lipopolysaccharides inside, causing bacterial permeability distortion and dissolution death The use of high-pressure ionization (or chemical, photochemical reactions) to decompose and polymerize some oxygen in the air into ozone is a process of oxygen allotrope transformation. The instability of ozone makes it difficult to achieve bottled storage, and it can only be produced on-site using an ozone generator, which can be used as needed. Ozone pipelines are prone to aging and leakage.

The principle of ultraviolet disinfection is that ultraviolet light with a wavelength of 240-270nm can break the ability of DNA to produce proteins and replicate After the DNA and RNA of bacteria and viruses are damaged, their ability to produce proteins and reproduce is lost. Due to the short lifespan of bacteria and viruses, those that cannot reproduce will quickly die. Ultraviolet radiation is emitted by ballasts and lamps, and requires regular inspection by specialized technicians. The principle of chlorine disinfection is that chlorine dissolves in water and hydrolyzes into HCl and hypochlorous acid, mainly through hypochlorous acid HCLO When chlorine or hypochlorous acid is added to water, it will first hydrolyze and dissociate, mainly forming substances such as HCLO and CLO -. Due to HCLO being an electrically neutral molecule with a very small molecular weight, it is relatively easy for it to penetrate the surface of negatively charged bacteria and penetrate into the interior of the cell through the cell wall. Through oxidation, it breaks down the enzyme system of bacteria and causes bacterial death. Chlorine disinfection operation is simple.

Based on the comprehensive situation of the laboratory, it has been decided to adopt a chlorine disinfection system, which has good treatment effect and low operating cost

3.4 Characteristics of the Diagnosis and Treatment Wastewater Treatment Equipment Product

This device only requires users to purchase medication and add it regularly. It mainly consists of a metering pump, a solution tank, a filter screen, a sewage valve, a liquid level control instrument, and an electrical control equipment. The main and auxiliary components are integrated and installed on the solution tank. The structure is simple, and the automatic and manual operation conversion is flexible. It is made of PP corrosion-resistant special materials and has a long service life. The equipment uses a liquid level gauge to control the water level, and the metering pump accurately adds medication. The equipment adopts fully automatic control, without the need for dedicated personnel to supervise, and can operate normally after connecting the power supply and inlet and outlet pipes; Not taking up too much space, the equipment is mature and reliable, and can withstand long-term on-site operation tests.

Main technical parameters: working power supply 220V; 50Hz, power 120W

3.5 Installation Instructions

1. The multiple sewage points that need to be treated in the laboratory are connected to the main pipeline, and finally connected to the sewage treatment equipment through the main pipeline. The outlet of the sewage treatment equipment is connected to the sewage discharge pipeline. 2. Connect the power supply to the electrical control box of the sewage treatment equipment.

3. The sewage treatment equipment is an integrated automation device, and the automatic control settings cannot be changed arbitrarily.

Medical wastewater treatment plan

1. Overview: With the increasing attention of the country to environmental protection and people's concern about the environmental situation, sewage discharge standards are becoming increasingly strict. Medical institution sewage contains a large amount of pathogenic microorganisms and toxic substances, which, if not effectively treated, will cause pollution to the surrounding environment. So whether the sewage treatment of medical institutions meets the standards will be an important basis for whether medical institutions can be established. The laboratory wastewater is a low concentration wastewater containing a small amount of pollutants such as blood and disinfectants, and the pollutants contain a certain amount of bacteria. If the wastewater is directly discharged into the water body without treatment, it will cause a certain degree of pollution to the surrounding water and soil, thereby endangering people's health. The laboratory attaches great importance to the treatment of sewage and has decided to install new sewage treatment facilities in accordance with the requirements of the local health and environmental protection departments. Our company has been commissioned by the laboratory to develop the following design plan for the treatment of the wastewater.

According to the "Pre treatment Standards for Water Pollutant Discharge in Medical Institutions", the discharge of medical wastewater should meet the following standards:

1. Take 500ml samples for inspection for three consecutive times, and no intestinal pathogenic bacteria and tuberculosis bacilli shall be detected.

2. The total number of coliforms per liter shall not exceed 5000. 3. The total residual chlorine content is 4-5mg/L.

4. The contact time between sewage and disinfectant shall not be less than 30 minutes to 1 hour

All medical wastewater in medical institutions must be input into the treatment tank through pipelines for disinfection before being discharged. The sewage treatment equipment must meet the following requirements: 1. It should be located far away from the treatment and reception areas and designed in a relatively concealed place. 2. There are anti-corrosion and leak proof facilities. 3. Ensure processing effectiveness, safety, and durability.

4. Easy to operate, convenient for disinfection and cleaning, and beneficial for the safety of operators.

Our company has designed a small-scale medical sewage treatment equipment based on the characteristics of small available area and low sewage volume of the medical institution. The equipment adopts a filtration and disinfection treatment process, which has the advantages of high automation, small footprint, no noise, no secondary pollution, easy installation, simple maintenance, and easy compliance. It has been widely used in sewage treatment projects such as medical laboratories, animal hospitals, medical comprehensive clinics, and dental clinics.

2. Design Scale and Standards 2.1 Design Scale

According to the relevant information provided by the laboratory, the maximum designed drainage capacity is 2m3

/d. The design processing time is 8 hours, and the processing water volume is 0.25m3

/h. 2.2 Design inlet water quality

Design the inlet water quality for sewage treatment (referring to the water quality of similar clinics), which is the medical sewage quality of the clinic, as follows:

CODcr ≤250mg/L BOD5 ≤100mg/L SS ≤60 mg/L Fecal coliforms ≤ 3 × 104/L pH 6-9 2.3 Designed effluent quality

According to the requirements of the project party, the treated water quality is required to meet the pre-treatment standards in Table 2 of the "Discharge Standards for Water Pollutants in Medical Institutions" (GB18466-2005). The main designed effluent indicators are as follows:

COD ≤250mg/L BOD5 ≤100mg/L SS ≤60 mg/L PH 6-9 fecal coliform count ≤ 5000MPN/L

2.4 Design Scope

Scope of sewage treatment area: Buildings (including overall layout) and supporting design between the inlet of sewage treatment equipment and the discharge outlet of sewage treatment equipment. The wastewater inlet and outlet pipes outside the sewage treatment equipment, as well as the power supply lines of the electrical control box, are not included in this plan. 2.5 Design Principles

1. Adopt * technology, new equipment, reduce investment, save energy consumption, and lower operating costs;

2. Reasonable process and equipment layout, compact structure, and small footprint are required; 3. Easy to operate, maintain and manage, with simple technical requirements, suitable for * use.

2.6 Design Basis

1. Water quality and quantity parameters provided by the owner;

2. "Discharge Standards for Water Pollutants in Medical Institutions" (GB18466-2005); 3. Surface Water Environmental Quality Standards (GB3838-2002); Design Code for Outdoor Drainage Engineering (GBJ14-87); 5. Design Code for Outdoor Water Supply (GB50013-2006); 6 "Code for Design of Water Supply and Drainage Engineering Structures" (GB69-84); 7 "Standard for Environmental Noise in Urban Areas" (GBJ3096-93);

8 "Handbook for Water Treatment Engineers" and "Technical Handbook for Three Waste Treatment Engineering"; 9 Relevant laws and regulations.

Wastewater treatment process and description 3.1 Process description

Based on past engineering experience and the regulations of water pollutant discharge standards in medical institutions, filtration and disinfection processes are adopted to purify sewage. The process route for the sewage treatment project is determined as follows:

Medical wastewater → filtration → disinfection → discharge treatment process description:

The medical wastewater collected in the laboratory flows automatically into the contact disinfection tank, and after filtration and disinfection, it meets the standard and is discharged into the urban sewage pipe network.

3.2 Process selection

Removal of Escherichia coli and viruses

According to the "Design Specification for Hospital Wastewater Treatment", medical wastewater must be disinfected using chlorine, ozone, and ultraviolet radiation with strong disinfection capabilities, which can kill Escherichia coli and viruses in the wastewater in a relatively short period of time.

The principle of ozone disinfection is that ozone is a strong oxidant, and the sterilization process belongs to biochemical oxidation reactions There are three forms of O3 sterilization:

Ozone can oxidize and decompose the enzymes required for glucose inside bacteria, leading to their inactivation and death 2. Directly interact with bacteria and viruses, destroy their organelles and DNA, RNA, disrupt bacterial metabolism, and lead to bacterial death

3. Through the cell membrane tissue, it invades the cell and acts on the lipoproteins on the outer membrane and lipopolysaccharides inside, causing bacterial permeability distortion and dissolution death The use of high-pressure ionization (or chemical, photochemical reactions) to decompose and polymerize some oxygen in the air into ozone is a process of oxygen allotrope transformation. The instability of ozone makes it difficult to achieve bottled storage, and it can only be produced on-site using an ozone generator, which can be used as needed. Ozone pipelines are prone to aging and leakage.

The principle of ultraviolet disinfection is that ultraviolet light with a wavelength of 240-270nm can break the ability of DNA to produce proteins and replicate After the DNA and RNA of bacteria and viruses are damaged, their ability to produce proteins and reproduce is lost. Due to the short lifespan of bacteria and viruses, those that cannot reproduce will quickly die. Ultraviolet radiation is emitted by ballasts and lamps, and requires regular inspection by specialized technicians. The principle of chlorine disinfection is that chlorine dissolves in water and hydrolyzes into HCl and hypochlorous acid, mainly through hypochlorous acid HCLO When chlorine or hypochlorous acid is added to water, it will first hydrolyze and dissociate, mainly forming substances such as HCLO and CLO -. Due to HCLO being an electrically neutral molecule with a very small molecular weight, it is relatively easy for it to penetrate the surface of negatively charged bacteria and penetrate into the interior of the cell through the cell wall. Through oxidation, it breaks down the enzyme system of bacteria and causes bacterial death. Chlorine disinfection operation is simple.

Based on the comprehensive situation of the laboratory, it has been decided to adopt a chlorine disinfection system, which has good treatment effect and low operating cost

3.4 Characteristics of the Diagnosis and Treatment Wastewater Treatment Equipment Product

This device only requires users to purchase medication and add it regularly. It mainly consists of a metering pump, a solution tank, a filter screen, a sewage valve, a liquid level control instrument, and an electrical control equipment. The main and auxiliary components are integrated and installed on the solution tank. The structure is simple, and the automatic and manual operation conversion is flexible. It is made of PP corrosion-resistant special materials and has a long service life. The equipment uses a liquid level gauge to control the water level, and the metering pump accurately adds medication. The equipment adopts fully automatic control, without the need for dedicated personnel to supervise, and can operate normally after connecting the power supply and inlet and outlet pipes; Not taking up too much space, the equipment is mature and reliable, and can withstand long-term on-site operation tests.

Main technical parameters: working power supply 220V; 50Hz, power 120W

3.5 Installation Instructions

1. The multiple sewage points that need to be treated in the laboratory are connected to the main pipeline, and finally connected to the sewage treatment equipment through the main pipeline. The outlet of the sewage treatment equipment is connected to the sewage discharge pipeline. 2. Connect the power supply to the electrical control box of the sewage treatment equipment.

3. The sewage treatment equipment is an integrated automation device, and the automatic control settings cannot be changed arbitrarily.

Customized sewage treatment equipment for hospitals in Luohe City

Customized sewage treatment equipment for hospitals in Luohe City

1Quality Assurance Commitment

The company promises that the hardware and software of the products and systems provided can meet or exceed the technical performance and control system technical specifications of this project; The reliability of the system will also meet or exceed the requirements of this project.

Our company promises to guarantee that the goods provided are brand new, unused, manufactured with * technology and high-quality materials, and meet the specified quality, specifications, and performance requirements.

Our company promises that the contracted equipment will have satisfactory performance during its service life after correct installation, commissioning, reasonable operation, and maintenance.

Ensure that the owner will not be accused by any third party of infringing their rights, trademark rights, or industrial design rights when using our goods, services, and any other parts. Otherwise, all responsibilities will be borne by us.

Ensure that the selected metering pump is * product.

We will bear all losses caused by any non-compliance with the contract and corresponding standards or quality issues with the purchased equipment before delivery for use.

Our company will strictly follow the construction acceptance specifications and quality evaluation standards for construction.

The system has an effective and comprehensive user based security policy to ensure the security of the system during operation, minimizing external and human influence and damage.

2After sales service commitment

The warranty period for this project is 12 months after the acceptance and production of the equipment host; After 12 months of acceptance and production, auxiliary equipment is covered by free warranty and lifelong maintenance during the warranty period. After the warranty period, only the cost of components will be charged, and service fees will be waived.

Our company will continue to provide original price spare parts and vulnerable parts to the owners after the warranty period expires, only charging material fees, and quickly providing the technical services needed by the owners. We promise that the main equipment will be able to provide replacement parts or replacement parts of no less than this level within 8 years, and will be able to meet the application requirements of the original system.

After the completion of the project, our company will promptly submit complete and clear completion drawings, construction materials, and relevant technical information.

During the normal operation of the equipment, we will conduct follow-up investigations on the supplied equipment and regularly visit users.

Our company is always ready to accept customer requests for help and provide assistance to customers. If there is a problem with the device, respond within one hour after the customer calls. If our maintenance personnel need to go to the site, we will send someone to the site within 24 hours.

At the completion of the project, technical documents and drawings of all equipment will be provided to the owner, including system diagrams, floor plans, terminal diagrams, installation diagrams, etc; Prepare and provide a system technical manual (detailing the principles, design, implementation methods, and main technical issues of the system); All manuals are in Chinese version.

3Personnel training plan

To ensure the normal operation, water quality compliance, and low operating costs of the chlorine dioxide complete equipment in this project after delivery, and to quickly adapt the operation of the chlorine dioxide complete equipment to the normal production of the project, so that the operating personnel can quickly familiarize themselves with and master the operation of the equipment, and improve the reliability and stability of the entire system, our company has formulated the following training plan:

4Training objectives

For senior maintenance personnel, we will provide a detailed explanation of the control principles of the chlorine dioxide system, familiarize themselves with equipment performance, parameters, and hardware configuration for operation, installation, and maintenance; Can perform daily maintenance of the system, regular calibration of instruments and meters, etc.

For operation, installation, and maintenance personnel, in addition to providing a detailed introduction to the control principle of the chlorine dioxide system, we also explain the equipment maintenance knowledge manual and on-site operation essentials, so that they can familiarize themselves with the system, operate correctly, modify parameters within their authority reasonably and accurately, and use the self-control system. Ensure the normal operation of the equipment and the quality of the effluent.

5Training methods

On site operation: Our company's professional on-site engineers provide hands-on, theoretical and practical explanations and operations that are easy to understand.

Training targets and number of participants (planned)

Senior maintenance personnel, 1-2 people; College degree or above in automation control major.

Installation and maintenance personnel, 1-5 people; Vocational education level or above in electronic and electrical engineering.

6Training content

Familiar with the operation sequence of processes and equipment;

Familiar with the basic composition, operation, and management of chlorine dioxide generator control system;

Master the methods of daily maintenance and upkeep of equipment and instruments;

Understand the basic working principles and fault analysis of equipment and instruments.