Program Description:
1. Fine grid: It is made into fine mesh or directly made to the manufacturer. 2. The adjustment tank is generally designed to have a hydraulic retention time of 1.5-2.0h, and aerated to it (in order to reduce the anaerobic reaction of the adjustment tank) The odor is generally based on an underwater aerator. The bottom of the pool is provided with a venting pipe, and the top of the pool is provided with an overflow hole.
3. The sedimentation tank is generally designed to have a hydraulic retention time of 0.5-0.8h. The tank is preferably in the shape of a bucket. The bottom of the tank is provided with a venting pipe or a sewage pump with a small flow rate. The top of the tank is provided with an overflow hole. The sewage from the regulating tank and the sedimentation tank is discharged to the sewage tank through the underground sewage draining tank and discharged into the municipal pipe network through the sewage pump.
4. Hair filter, which is suitable for small pore size hair filter, and retains large particles such as hair in raw water. It is designed to protect the subsequent membrane equipment. It is designed with self-designed backwash tube and can be designed to be backwashed once a day. , every 10 minutes.
5. The pressure pump is designed for one use and one set (the process adopts flow rate of 16m3/h, head 80m, power 5.5Kw, southern pump industry CDL16-100) for the subsequent system pressurization.
6. Disinfection equipment (The process disinfection equipment is patented technology, which is difficult to buy in the market. Its main function is to remove harmful microorganisms, bacteria and other harmful bacteria in raw water).
7. Membrane treatment system, mainly adopts hollow fiber membrane (8 hollow fiber membranes of Φ200 are used in the process, the influent flow rate is maintained at 12m3/h, and the effluent is maintained at about 10m3/h. The original design of the system is backwashing every day. Once, but after 2 months of actual operation, the effect is not satisfactory, instead of backwashing for 10 minutes per hour, to protect the hollow fiber membrane), the water designed in the early stage should be filtered through very fine, so that the membrane will not be blocked. Keep the system running properly. Its operating pressure is 0.1-0.3 MPa.
8. Activated carbon adsorption, the water from the membrane is adsorbed by activated carbon, deodorizing, deodorizing and adsorbing colloidal substances in water (if the activated carbon adsorption system is placed before the membrane system, 1 kg of activated carbon is treated with 8-12 tons of activated carbon. The life will be very short, and the activated carbon will be replaced soon, and the rear part will be about 20 times of the front, which will increase the service life of activated carbon. The activated carbon will be dechlorinated with 1 kg of activated carbon to treat 30 tons of water. This is also the case when drinking water directly. The activated carbon canister of the process is designed to be backwashed once a day for 10 minutes, the tank design is Φ1600, the effective height is 2000, the net height is 2800, and the actual loading is 75%.
9. The reclaimed water tank is designed for a 3-hour hydraulic retention time. There is a venting tube at the bottom of the reclaimed water tank, an overflow hole at the top, and a tap water supply pipe at the upper part of the reclaimed water tank.
10. Lifting pump, this process supplies 4 office buildings with flushing water, high-rise and low-rise. Therefore, the southern pump industry models are CDL4-60 and CDL4-140 (vertical pump) and CDL4-140 is used as the front. Several systems of backwash pumps.

Electrical control section:
The electrical control part can be divided into several aspects: controlling the operation of the pressure pump, lifting the pump, and backwashing.
1 The pressure pump is controlled by the liquid level controller in the sedimentation tank and the water reuse tank: <1>. If the water level in the sedimentation tank meets the design requirements and the water level in the reuse tank is lower, the pressure pump operates; if the water level in the sedimentation tank is not When the design water level is reached, the water level in the reuse pool is low, the pressure pump is not running, and the tap water supply valve is opened. <2>. The water level in the sedimentation tank did not meet the design requirements, and the water level in the reuse tank reached the design requirement, the pressure pump did not run; the water level in the sedimentation tank did not meet the design requirements, and the water level in the reuse tank reached the design requirement, and the pressure pump did not run.
2 The lift pump is controlled by the liquid level controller in the water tank of each building and the liquid level controller in the water reuse tank: <1>. When the middle water reuse tank is at a low water level, the lift pump does not run; 2>. The water level in the water reuse pool meets the design requirements. When the water level in the water tank of each building is at a high water level, the lift pump does not run. When the water level is low, the pump is operated.
3 In terms of backwashing, when the system is working normally, the normal filter of the hair filter, membrane system and activated carbon system is opened, the backwashing solenoid valve is closed, the backwashing program set every day is activated, the hair filter, membrane system and The solenoid valve of the normal effluent of the activated carbon system is closed: <1>. First, the backwash valve of the activated carbon tank is opened for backwashing; <2>. Secondly, the backwash valve of the membrane system is opened for backwashing; <3> Finally, the backwash valve of the hair filter is opened for backwashing.
A liquid level device is arranged in the 4 sewage pit to drain the sewage discharged from the regulating tank, the sedimentation tank, the recycling pool and the hair filter.