Emergency water supply integrated water purification equipment

Introduction to the Process of Emergency Water Supply Integrated Water Purification Equipment:

The river water is transported to the river water purification system by the water pump in the water intake pump room. Firstly, it passes through the pipeline mixer and is mixed with the added sodium hypochlorite agent to remove organic pollutants and harmful bacteria from the water. Then, it undergoes a coagulation reaction with the added PAC coagulant, and the water is purifiedThe suspended solids in the water are flocculated by coagulants to form floc like alum flowers. After the reaction, the river water enters the integrated water purifier and undergoes coagulation, reaction, precipitation, filtration and other processes to remove the suspended solids in the water. The effluent meets the requirements of circulating cooling waterThe requested water quality standards. The effluent from the FA water purifier flows automatically into the industrial water tank and is then transported to various process water points by a clean water pump.

The sedimentation section of the emergency water supply integrated water purification equipment discharges sludge at regular intervals to prevent sludge from clumping and settling. At the same time, the cleaning water pump is turned on, and this process is fully automatic. The filtration section of the water purifier is a valve free filter structure, and its operation and filter material cleaning are both automaticState.

The sludge and backwash water discharged from the emergency water supply integrated water purification equipment flow into the sludge tank by themselves. The supernatant is transported to various green water points by the green water pump, and the bottom sludge is transported to the sludge dewatering system by the sludge pump. The dry sludge formed after dewatering is transported for treatment.

The emergency water supply integrated water purification equipment is equipped with a forced destruction pipe. When the automatic backwash is not thorough, the tap water inlet valve of the forced destruction pipe is opened, and the water purifier can be forced to backwash, ensuring that the effluent of the water purifier always meets the standard.

The integrated water purification equipment for emergency water supply adopts epoxy coal tar anti-corrosion paint for internal anti-corrosion, which can effectively prevent impurities in river water from corroding the equipment and extend the service life of the equipment.

Emergency water supply integrated water purification equipment for treating raw water sources and water quality:

The raw water quality data of the production water purification system can be found in the "Fengxian Dongshitang River Water and Tap Water Testing Report" (No. HLSHF) for river water quality.

Process composition

Process equipment section

1. River water transportation (supplied by Party A).

2. Two pipeline mixers.

3. Efficient fully automatic water purifiers (2 FA-125 automatic water purifiers, 1 FA-30 automatic water purifier).

4. Dosing system (including 1 set of PAC dosing system and 1 set of PAM dosing system)

Instrument control section

1. 1 set of turbidity meter (FA-125 effluent measurement)

2. 1 set of residual chlorine meter (measuring residual chlorine in the effluent of the clean water tank)

3. Two sets of electromagnetic flow meters (one FA water purifier inlet flow meter and one clean water pump outlet flow meter)

system process

The river water supply process is as follows: water intake pump room → integrated river water purification station → industrial fire water tank → water pump → water point.

The process of treating and discharging circulating water and sewage is as follows: circulating water and sewage → sewage lifting pump → integrated sewage purification station → rainwater pipe network.

Requirements for effluent quality of the system

The effluent quality of river water purification treatment must meet the requirement of effluent turbidity ≤ 3mg/L.

The purified river water quality standard should meet the circulating cooling water quality indicators in the following table, taking into account the concentration ratio of circulating cooling water (5 times).

Operating environmental conditions for integrated emergency water supply and purification equipment:

1. Meteorological conditions

Fengxian District is located near the river and the sea, with a subtropical monsoon climate. The prevailing wind is southeast wind throughout the year, with a warm climate, abundant sunshine, distinct four seasons, and abundant rainfall. The air dust reduction is one tenth of that in the center of Shanghai, and the air quality is the best in the land area of Shanghai. district

The inland terrain is flat and belongs to the alluvial plain of the Yangtze River Delta. The annual rainfall is 1091 millimeters, the frost free period is 232 days, the annual average temperature is 16.1 ℃, the annual average sunshine hours is 1942 hours, the annual average relative humidity is 69%, and the annual average wind speed is 3.3 meters per second. 2. GeographyConditions.

The basic seismic fortification intensity of this project is 7 degrees, and the peak ground acceleration is 0.10g.

Explanation of Control Logic for Mechanical and Electrical Equipment

1. Lift pump (provided by the owner)

(1) Control instructions: The start and stop of the lift pump are controlled by the level gauge in the clean water tank. It starts when the liquid level is medium (L, adjustable on the computer) and stops when the liquid level is high (H, adjustable on the computer). When a lift pump accumulates 12 hours of operation time, it automatically switches to another oneOne. When a lift pump malfunctions, it should emit an audible and visual alarm signal and automatically switch to another one.? 2. FA-125 water purifier?

(2) Self control equipment: A single set of water purifier includes: 1 inlet electric valve, 3 discharge electric valves, and 3 cleaning electric valves.

(3) Control instructions:

a. The inlet electric valves of two sets of water purifiers are simultaneously interlocked with the lifting pump. When the lifting pump is running, both inlet electric valves open; When the lift pump stops, the two inlet electric valves close.

b. Automatic operation of sludge discharge electric valve and cleaning electric valve: When the inlet valve is opened, the internal timer of the PLC starts working. When one of the two sets of water purifiers has accumulated 8 hours of operation, the 1 # valve group is opened (first open the 1 # sludge discharge valve, and then open the 1 # valve after a 10 second interval)Rinse the valve for 60 seconds and then close it; After waiting for 60 seconds, open the 2 # valve group (first open the 2 # sludge discharge valve, and then open the 2 # flushing valve after an interval of 10 seconds), flush for 60 seconds, and then close. Repeat this process until all valves have discharged the sludge and the sludge discharge process is complete. Wait for the next sludge discharge processStart.

c. The valve determines whether to participate in system automatic control based on the "input/output" switch on the on-site cabinet and the switching relationship on the screen. 3. Sodium hypochlorite dosing device

(1) Mechanical and electrical equipment: Front end sodium hypochlorite metering pump, model P066, 22W/220V, quantity 2 units.

(2) Control instructions: The front-end sodium hypochlorite metering pump and lifting pump are interlocked for operation. 1 for use and 1 for backup. When one metering pump has accumulated 8 hours of operation time, it will automatically switch to another. When a metering pump malfunctions, it should emit an audible and visual alarm signal and automatically switch to another one.

(3) Operation instructions: Pour the medicine into the measuring box, then dilute with water at a dilution ratio of 50%. The metering pump adds the calculated flow rate to the pipeline mixer. The dispensing process is manually operated. The process of adding medication is automated.